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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: https://codemirror.net/LICENSE // This is CodeMirror (https://codemirror.net), a code editor // implemented in JavaScript on top of the browser's DOM. // // You can find some technical background for some of the code below // at http://marijnhaverbeke.nl/blog/#cm-internals . (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global = global || self, global.CodeMirror = factory()); }(this, (function () { 'use strict'; // Kludges for bugs and behavior differences that can't be feature // detected are enabled based on userAgent etc sniffing. var userAgent = navigator.userAgent; var platform = navigator.platform; var gecko = /gecko\/\d/i.test(userAgent); var ie_upto10 = /MSIE \d/.test(userAgent); var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent); var edge = /Edge\/(\d+)/.exec(userAgent); var ie = ie_upto10 || ie_11up || edge; var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]); var webkit = !edge && /WebKit\//.test(userAgent); var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent); var chrome = !edge && /Chrome\//.test(userAgent); var presto = /Opera\//.test(userAgent); var safari = /Apple Computer/.test(navigator.vendor); var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent); var phantom = /PhantomJS/.test(userAgent); var ios = safari && (/Mobile\/\w+/.test(userAgent) || navigator.maxTouchPoints > 2); var android = /Android/.test(userAgent); // This is woefully incomplete. Suggestions for alternative methods welcome. var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent); var mac = ios || /Mac/.test(platform); var chromeOS = /\bCrOS\b/.test(userAgent); var windows = /win/i.test(platform); var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/); if (presto_version) { presto_version = Number(presto_version[1]); } if (presto_version && presto_version >= 15) { presto = false; webkit = true; } // Some browsers use the wrong event properties to signal cmd/ctrl on OS X var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)); var captureRightClick = gecko || (ie && ie_version >= 9); function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") } var rmClass = function(node, cls) { var current = node.className; var match = classTest(cls).exec(current); if (match) { var after = current.slice(match.index + match[0].length); node.className = current.slice(0, match.index) + (after ? match[1] + after : ""); } }; function removeChildren(e) { for (var count = e.childNodes.length; count > 0; --count) { e.removeChild(e.firstChild); } return e } function removeChildrenAndAdd(parent, e) { return removeChildren(parent).appendChild(e) } function elt(tag, content, className, style) { var e = document.createElement(tag); if (className) { e.className = className; } if (style) { e.style.cssText = style; } if (typeof content == "string") { e.appendChild(document.createTextNode(content)); } else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } } return e } // wrapper for elt, which removes the elt from the accessibility tree function eltP(tag, content, className, style) { var e = elt(tag, content, className, style); e.setAttribute("role", "presentation"); return e } var range; if (document.createRange) { range = function(node, start, end, endNode) { var r = document.createRange(); r.setEnd(endNode || node, end); r.setStart(node, start); return r }; } else { range = function(node, start, end) { var r = document.body.createTextRange(); try { r.moveToElementText(node.parentNode); } catch(e) { return r } r.collapse(true); r.moveEnd("character", end); r.moveStart("character", start); return r }; } function contains(parent, child) { if (child.nodeType == 3) // Android browser always returns false when child is a textnode { child = child.parentNode; } if (parent.contains) { return parent.contains(child) } do { if (child.nodeType == 11) { child = child.host; } if (child == parent) { return true } } while (child = child.parentNode) } function activeElt() { // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. // IE < 10 will throw when accessed while the page is loading or in an iframe. // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. var activeElement; try { activeElement = document.activeElement; } catch(e) { activeElement = document.body || null; } while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) { activeElement = activeElement.shadowRoot.activeElement; } return activeElement } function addClass(node, cls) { var current = node.className; if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls; } } function joinClasses(a, b) { var as = a.split(" "); for (var i = 0; i < as.length; i++) { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i]; } } return b } var selectInput = function(node) { node.select(); }; if (ios) // Mobile Safari apparently has a bug where select() is broken. { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; } else if (ie) // Suppress mysterious IE10 errors { selectInput = function(node) { try { node.select(); } catch(_e) {} }; } function bind(f) { var args = Array.prototype.slice.call(arguments, 1); return function(){return f.apply(null, args)} } function copyObj(obj, target, overwrite) { if (!target) { target = {}; } for (var prop in obj) { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) { target[prop] = obj[prop]; } } return target } // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. function countColumn(string, end, tabSize, startIndex, startValue) { if (end == null) { end = string.search(/[^\s\u00a0]/); if (end == -1) { end = string.length; } } for (var i = startIndex || 0, n = startValue || 0;;) { var nextTab = string.indexOf("\t", i); if (nextTab < 0 || nextTab >= end) { return n + (end - i) } n += nextTab - i; n += tabSize - (n % tabSize); i = nextTab + 1; } } var Delayed = function() { this.id = null; this.f = null; this.time = 0; this.handler = bind(this.onTimeout, this); }; Delayed.prototype.onTimeout = function (self) { self.id = 0; if (self.time <= +new Date) { self.f(); } else { setTimeout(self.handler, self.time - +new Date); } }; Delayed.prototype.set = function (ms, f) { this.f = f; var time = +new Date + ms; if (!this.id || time < this.time) { clearTimeout(this.id); this.id = setTimeout(this.handler, ms); this.time = time; } }; function indexOf(array, elt) { for (var i = 0; i < array.length; ++i) { if (array[i] == elt) { return i } } return -1 } // Number of pixels added to scroller and sizer to hide scrollbar var scrollerGap = 50; // Returned or thrown by various protocols to signal 'I'm not // handling this'. var Pass = {toString: function(){return "CodeMirror.Pass"}}; // Reused option objects for setSelection & friends var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"}; // The inverse of countColumn -- find the offset that corresponds to // a particular column. function findColumn(string, goal, tabSize) { for (var pos = 0, col = 0;;) { var nextTab = string.indexOf("\t", pos); if (nextTab == -1) { nextTab = string.length; } var skipped = nextTab - pos; if (nextTab == string.length || col + skipped >= goal) { return pos + Math.min(skipped, goal - col) } col += nextTab - pos; col += tabSize - (col % tabSize); pos = nextTab + 1; if (col >= goal) { return pos } } } var spaceStrs = [""]; function spaceStr(n) { while (spaceStrs.length <= n) { spaceStrs.push(lst(spaceStrs) + " "); } return spaceStrs[n] } function lst(arr) { return arr[arr.length-1] } function map(array, f) { var out = []; for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); } return out } function insertSorted(array, value, score) { var pos = 0, priority = score(value); while (pos < array.length && score(array[pos]) <= priority) { pos++; } array.splice(pos, 0, value); } function nothing() {} function createObj(base, props) { var inst; if (Object.create) { inst = Object.create(base); } else { nothing.prototype = base; inst = new nothing(); } if (props) { copyObj(props, inst); } return inst } var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; function isWordCharBasic(ch) { return /\w/.test(ch) || ch > "\x80" && (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)) } function isWordChar(ch, helper) { if (!helper) { return isWordCharBasic(ch) } if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true } return helper.test(ch) } function isEmpty(obj) { for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } } return true } // Extending unicode characters. A series of a non-extending char + // any number of extending chars is treated as a single unit as far // as editing and measuring is concerned. This is not fully correct, // since some scripts/fonts/browsers also treat other configurations // of code points as a group. var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/; function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. function skipExtendingChars(str, pos, dir) { while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; } return pos } // Returns the value from the range [`from`; `to`] that satisfies // `pred` and is closest to `from`. Assumes that at least `to` // satisfies `pred`. Supports `from` being greater than `to`. function findFirst(pred, from, to) { // At any point we are certain `to` satisfies `pred`, don't know // whether `from` does. var dir = from > to ? -1 : 1; for (;;) { if (from == to) { return from } var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF); if (mid == from) { return pred(mid) ? from : to } if (pred(mid)) { to = mid; } else { from = mid + dir; } } } // BIDI HELPERS function iterateBidiSections(order, from, to, f) { if (!order) { return f(from, to, "ltr", 0) } var found = false; for (var i = 0; i < order.length; ++i) { var part = order[i]; if (part.from < to && part.to > from || from == to && part.to == from) { f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i); found = true; } } if (!found) { f(from, to, "ltr"); } } var bidiOther = null; function getBidiPartAt(order, ch, sticky) { var found; bidiOther = null; for (var i = 0; i < order.length; ++i) { var cur = order[i]; if (cur.from < ch && cur.to > ch) { return i } if (cur.to == ch) { if (cur.from != cur.to && sticky == "before") { found = i; } else { bidiOther = i; } } if (cur.from == ch) { if (cur.from != cur.to && sticky != "before") { found = i; } else { bidiOther = i; } } } return found != null ? found : bidiOther } // Bidirectional ordering algorithm // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm // that this (partially) implements. // One-char codes used for character types: // L (L): Left-to-Right // R (R): Right-to-Left // r (AL): Right-to-Left Arabic // 1 (EN): European Number // + (ES): European Number Separator // % (ET): European Number Terminator // n (AN): Arabic Number // , (CS): Common Number Separator // m (NSM): Non-Spacing Mark // b (BN): Boundary Neutral // s (B): Paragraph Separator // t (S): Segment Separator // w (WS): Whitespace // N (ON): Other Neutrals // Returns null if characters are ordered as they appear // (left-to-right), or an array of sections ({from, to, level} // objects) in the order in which they occur visually. var bidiOrdering = (function() { // Character types for codepoints 0 to 0xff var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"; // Character types for codepoints 0x600 to 0x6f9 var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111"; function charType(code) { if (code <= 0xf7) { return lowTypes.charAt(code) } else if (0x590 <= code && code <= 0x5f4) { return "R" } else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) } else if (0x6ee <= code && code <= 0x8ac) { return "r" } else if (0x2000 <= code && code <= 0x200b) { return "w" } else if (code == 0x200c) { return "b" } else { return "L" } } var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; function BidiSpan(level, from, to) { this.level = level; this.from = from; this.to = to; } return function(str, direction) { var outerType = direction == "ltr" ? "L" : "R"; if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false } var len = str.length, types = []; for (var i = 0; i < len; ++i) { types.push(charType(str.charCodeAt(i))); } // W1. Examine each non-spacing mark (NSM) in the level run, and // change the type of the NSM to the type of the previous // character. If the NSM is at the start of the level run, it will // get the type of sor. for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) { var type = types[i$1]; if (type == "m") { types[i$1] = prev; } else { prev = type; } } // W2. Search backwards from each instance of a European number // until the first strong type (R, L, AL, or sor) is found. If an // AL is found, change the type of the European number to Arabic // number. // W3. Change all ALs to R. for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) { var type$1 = types[i$2]; if (type$1 == "1" && cur == "r") { types[i$2] = "n"; } else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R"; } } } // W4. A single European separator between two European numbers // changes to a European number. A single common separator between // two numbers of the same type changes to that type. for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) { var type$2 = types[i$3]; if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1"; } else if (type$2 == "," && prev$1 == types[i$3+1] && (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1; } prev$1 = type$2; } // W5. A sequence of European terminators adjacent to European // numbers changes to all European numbers. // W6. Otherwise, separators and terminators change to Other // Neutral. for (var i$4 = 0; i$4 < len; ++i$4) { var type$3 = types[i$4]; if (type$3 == ",") { types[i$4] = "N"; } else if (type$3 == "%") { var end = (void 0); for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {} var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; for (var j = i$4; j < end; ++j) { types[j] = replace; } i$4 = end - 1; } } // W7. Search backwards from each instance of a European number // until the first strong type (R, L, or sor) is found. If an L is // found, then change the type of the European number to L. for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) { var type$4 = types[i$5]; if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L"; } else if (isStrong.test(type$4)) { cur$1 = type$4; } } // N1. A sequence of neutrals takes the direction of the // surrounding strong text if the text on both sides has the same // direction. European and Arabic numbers act as if they were R in // terms of their influence on neutrals. Start-of-level-run (sor) // and end-of-level-run (eor) are used at level run boundaries. // N2. Any remaining neutrals take the embedding direction. for (var i$6 = 0; i$6 < len; ++i$6) { if (isNeutral.test(types[i$6])) { var end$1 = (void 0); for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {} var before = (i$6 ? types[i$6-1] : outerType) == "L"; var after = (end$1 < len ? types[end$1] : outerType) == "L"; var replace$1 = before == after ? (before ? "L" : "R") : outerType; for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; } i$6 = end$1 - 1; } } // Here we depart from the documented algorithm, in order to avoid // building up an actual levels array. Since there are only three // levels (0, 1, 2) in an implementation that doesn't take // explicit embedding into account, we can build up the order on // the fly, without following the level-based algorithm. var order = [], m; for (var i$7 = 0; i$7 < len;) { if (countsAsLeft.test(types[i$7])) { var start = i$7; for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {} order.push(new BidiSpan(0, start, i$7)); } else { var pos = i$7, at = order.length, isRTL = direction == "rtl" ? 1 : 0; for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {} for (var j$2 = pos; j$2 < i$7;) { if (countsAsNum.test(types[j$2])) { if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); at += isRTL; } var nstart = j$2; for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {} order.splice(at, 0, new BidiSpan(2, nstart, j$2)); at += isRTL; pos = j$2; } else { ++j$2; } } if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); } } } if (direction == "ltr") { if (order[0].level == 1 && (m = str.match(/^\s+/))) { order[0].from = m[0].length; order.unshift(new BidiSpan(0, 0, m[0].length)); } if (lst(order).level == 1 && (m = str.match(/\s+$/))) { lst(order).to -= m[0].length; order.push(new BidiSpan(0, len - m[0].length, len)); } } return direction == "rtl" ? order.reverse() : order } })(); // Get the bidi ordering for the given line (and cache it). Returns // false for lines that are fully left-to-right, and an array of // BidiSpan objects otherwise. function getOrder(line, direction) { var order = line.order; if (order == null) { order = line.order = bidiOrdering(line.text, direction); } return order } // EVENT HANDLING // Lightweight event framework. on/off also work on DOM nodes, // registering native DOM handlers. var noHandlers = []; var on = function(emitter, type, f) { if (emitter.addEventListener) { emitter.addEventListener(type, f, false); } else if (emitter.attachEvent) { emitter.attachEvent("on" + type, f); } else { var map = emitter._handlers || (emitter._handlers = {}); map[type] = (map[type] || noHandlers).concat(f); } }; function getHandlers(emitter, type) { return emitter._handlers && emitter._handlers[type] || noHandlers } function off(emitter, type, f) { if (emitter.removeEventListener) { emitter.removeEventListener(type, f, false); } else if (emitter.detachEvent) { emitter.detachEvent("on" + type, f); } else { var map = emitter._handlers, arr = map && map[type]; if (arr) { var index = indexOf(arr, f); if (index > -1) { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)); } } } } function signal(emitter, type /*, values...*/) { var handlers = getHandlers(emitter, type); if (!handlers.length) { return } var args = Array.prototype.slice.call(arguments, 2); for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); } } // The DOM events that CodeMirror handles can be overridden by // registering a (non-DOM) handler on the editor for the event name, // and preventDefault-ing the event in that handler. function signalDOMEvent(cm, e, override) { if (typeof e == "string") { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; } signal(cm, override || e.type, cm, e); return e_defaultPrevented(e) || e.codemirrorIgnore } function signalCursorActivity(cm) { var arr = cm._handlers && cm._handlers.cursorActivity; if (!arr) { return } var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []); for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1) { set.push(arr[i]); } } } function hasHandler(emitter, type) { return getHandlers(emitter, type).length > 0 } // Add on and off methods to a constructor's prototype, to make // registering events on such objects more convenient. function eventMixin(ctor) { ctor.prototype.on = function(type, f) {on(this, type, f);}; ctor.prototype.off = function(type, f) {off(this, type, f);}; } // Due to the fact that we still support jurassic IE versions, some // compatibility wrappers are needed. function e_preventDefault(e) { if (e.preventDefault) { e.preventDefault(); } else { e.returnValue = false; } } function e_stopPropagation(e) { if (e.stopPropagation) { e.stopPropagation(); } else { e.cancelBubble = true; } } function e_defaultPrevented(e) { return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false } function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} function e_target(e) {return e.target || e.srcElement} function e_button(e) { var b = e.which; if (b == null) { if (e.button & 1) { b = 1; } else if (e.button & 2) { b = 3; } else if (e.button & 4) { b = 2; } } if (mac && e.ctrlKey && b == 1) { b = 3; } return b } // Detect drag-and-drop var dragAndDrop = function() { // There is *some* kind of drag-and-drop support in IE6-8, but I // couldn't get it to work yet. if (ie && ie_version < 9) { return false } var div = elt('div'); return "draggable" in div || "dragDrop" in div }(); var zwspSupported; function zeroWidthElement(measure) { if (zwspSupported == null) { var test = elt("span", "\u200b"); removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); if (measure.firstChild.offsetHeight != 0) { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); } } var node = zwspSupported ? elt("span", "\u200b") : elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); node.setAttribute("cm-text", ""); return node } // Feature-detect IE's crummy client rect reporting for bidi text var badBidiRects; function hasBadBidiRects(measure) { if (badBidiRects != null) { return badBidiRects } var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")); var r0 = range(txt, 0, 1).getBoundingClientRect(); var r1 = range(txt, 1, 2).getBoundingClientRect(); removeChildren(measure); if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780) return badBidiRects = (r1.right - r0.right < 3) } // See if "".split is the broken IE version, if so, provide an // alternative way to split lines. var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) { var pos = 0, result = [], l = string.length; while (pos <= l) { var nl = string.indexOf("\n", pos); if (nl == -1) { nl = string.length; } var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); var rt = line.indexOf("\r"); if (rt != -1) { result.push(line.slice(0, rt)); pos += rt + 1; } else { result.push(line); pos = nl + 1; } } return result } : function (string) { return string.split(/\r\n?|\n/); }; var hasSelection = window.getSelection ? function (te) { try { return te.selectionStart != te.selectionEnd } catch(e) { return false } } : function (te) { var range; try {range = te.ownerDocument.selection.createRange();} catch(e) {} if (!range || range.parentElement() != te) { return false } return range.compareEndPoints("StartToEnd", range) != 0 }; var hasCopyEvent = (function () { var e = elt("div"); if ("oncopy" in e) { return true } e.setAttribute("oncopy", "return;"); return typeof e.oncopy == "function" })(); var badZoomedRects = null; function hasBadZoomedRects(measure) { if (badZoomedRects != null) { return badZoomedRects } var node = removeChildrenAndAdd(measure, elt("span", "x")); var normal = node.getBoundingClientRect(); var fromRange = range(node, 0, 1).getBoundingClientRect(); return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1 } // Known modes, by name and by MIME var modes = {}, mimeModes = {}; // Extra arguments are stored as the mode's dependencies, which is // used by (legacy) mechanisms like loadmode.js to automatically // load a mode. (Preferred mechanism is the require/define calls.) function defineMode(name, mode) { if (arguments.length > 2) { mode.dependencies = Array.prototype.slice.call(arguments, 2); } modes[name] = mode; } function defineMIME(mime, spec) { mimeModes[mime] = spec; } // Given a MIME type, a {name, ...options} config object, or a name // string, return a mode config object. function resolveMode(spec) { if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { spec = mimeModes[spec]; } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { var found = mimeModes[spec.name]; if (typeof found == "string") { found = {name: found}; } spec = createObj(found, spec); spec.name = found.name; } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { return resolveMode("application/xml") } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) { return resolveMode("application/json") } if (typeof spec == "string") { return {name: spec} } else { return spec || {name: "null"} } } // Given a mode spec (anything that resolveMode accepts), find and // initialize an actual mode object. function getMode(options, spec) { spec = resolveMode(spec); var mfactory = modes[spec.name]; if (!mfactory) { return getMode(options, "text/plain") } var modeObj = mfactory(options, spec); if (modeExtensions.hasOwnProperty(spec.name)) { var exts = modeExtensions[spec.name]; for (var prop in exts) { if (!exts.hasOwnProperty(prop)) { continue } if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop]; } modeObj[prop] = exts[prop]; } } modeObj.name = spec.name; if (spec.helperType) { modeObj.helperType = spec.helperType; } if (spec.modeProps) { for (var prop$1 in spec.modeProps) { modeObj[prop$1] = spec.modeProps[prop$1]; } } return modeObj } // This can be used to attach properties to mode objects from // outside the actual mode definition. var modeExtensions = {}; function extendMode(mode, properties) { var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); copyObj(properties, exts); } function copyState(mode, state) { if (state === true) { return state } if (mode.copyState) { return mode.copyState(state) } var nstate = {}; for (var n in state) { var val = state[n]; if (val instanceof Array) { val = val.concat([]); } nstate[n] = val; } return nstate } // Given a mode and a state (for that mode), find the inner mode and // state at the position that the state refers to. function innerMode(mode, state) { var info; while (mode.innerMode) { info = mode.innerMode(state); if (!info || info.mode == mode) { break } state = info.state; mode = info.mode; } return info || {mode: mode, state: state} } function startState(mode, a1, a2) { return mode.startState ? mode.startState(a1, a2) : true } // STRING STREAM // Fed to the mode parsers, provides helper functions to make // parsers more succinct. var StringStream = function(string, tabSize, lineOracle) { this.pos = this.start = 0; this.string = string; this.tabSize = tabSize || 8; this.lastColumnPos = this.lastColumnValue = 0; this.lineStart = 0; this.lineOracle = lineOracle; }; StringStream.prototype.eol = function () {return this.pos >= this.string.length}; StringStream.prototype.sol = function () {return this.pos == this.lineStart}; StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined}; StringStream.prototype.next = function () { if (this.pos < this.string.length) { return this.string.charAt(this.pos++) } }; StringStream.prototype.eat = function (match) { var ch = this.string.charAt(this.pos); var ok; if (typeof match == "string") { ok = ch == match; } else { ok = ch && (match.test ? match.test(ch) : match(ch)); } if (ok) {++this.pos; return ch} }; StringStream.prototype.eatWhile = function (match) { var start = this.pos; while (this.eat(match)){} return this.pos > start }; StringStream.prototype.eatSpace = function () { var start = this.pos; while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this.pos; } return this.pos > start }; StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;}; StringStream.prototype.skipTo = function (ch) { var found = this.string.indexOf(ch, this.pos); if (found > -1) {this.pos = found; return true} }; StringStream.prototype.backUp = function (n) {this.pos -= n;}; StringStream.prototype.column = function () { if (this.lastColumnPos < this.start) { this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); this.lastColumnPos = this.start; } return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) }; StringStream.prototype.indentation = function () { return countColumn(this.string, null, this.tabSize) - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) }; StringStream.prototype.match = function (pattern, consume, caseInsensitive) { if (typeof pattern == "string") { var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; }; var substr = this.string.substr(this.pos, pattern.length); if (cased(substr) == cased(pattern)) { if (consume !== false) { this.pos += pattern.length; } return true } } else { var match = this.string.slice(this.pos).match(pattern); if (match && match.index > 0) { return null } if (match && consume !== false) { this.pos += match[0].length; } return match } }; StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)}; StringStream.prototype.hideFirstChars = function (n, inner) { this.lineStart += n; try { return inner() } finally { this.lineStart -= n; } }; StringStream.prototype.lookAhead = function (n) { var oracle = this.lineOracle; return oracle && oracle.lookAhead(n) }; StringStream.prototype.baseToken = function () { var oracle = this.lineOracle; return oracle && oracle.baseToken(this.pos) }; // Find the line object corresponding to the given line number. function getLine(doc, n) { n -= doc.first; if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") } var chunk = doc; while (!chunk.lines) { for (var i = 0;; ++i) { var child = chunk.children[i], sz = child.chunkSize(); if (n < sz) { chunk = child; break } n -= sz; } } return chunk.lines[n] } // Get the part of a document between two positions, as an array of // strings. function getBetween(doc, start, end) { var out = [], n = start.line; doc.iter(start.line, end.line + 1, function (line) { var text = line.text; if (n == end.line) { text = text.slice(0, end.ch); } if (n == start.line) { text = text.slice(start.ch); } out.push(text); ++n; }); return out } // Get the lines between from and to, as array of strings. function getLines(doc, from, to) { var out = []; doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value return out } // Update the height of a line, propagating the height change // upwards to parent nodes. function updateLineHeight(line, height) { var diff = height - line.height; if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } } } // Given a line object, find its line number by walking up through // its parent links. function lineNo(line) { if (line.parent == null) { return null } var cur = line.parent, no = indexOf(cur.lines, line); for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { for (var i = 0;; ++i) { if (chunk.children[i] == cur) { break } no += chunk.children[i].chunkSize(); } } return no + cur.first } // Find the line at the given vertical position, using the height // information in the document tree. function lineAtHeight(chunk, h) { var n = chunk.first; outer: do { for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) { var child = chunk.children[i$1], ch = child.height; if (h < ch) { chunk = child; continue outer } h -= ch; n += child.chunkSize(); } return n } while (!chunk.lines) var i = 0; for (; i < chunk.lines.length; ++i) { var line = chunk.lines[i], lh = line.height; if (h < lh) { break } h -= lh; } return n + i } function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size} function lineNumberFor(options, i) { return String(options.lineNumberFormatter(i + options.firstLineNumber)) } // A Pos instance represents a position within the text. function Pos(line, ch, sticky) { if ( sticky === void 0 ) sticky = null; if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) } this.line = line; this.ch = ch; this.sticky = sticky; } // Compare two positions, return 0 if they are the same, a negative // number when a is less, and a positive number otherwise. function cmp(a, b) { return a.line - b.line || a.ch - b.ch } function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 } function copyPos(x) {return Pos(x.line, x.ch)} function maxPos(a, b) { return cmp(a, b) < 0 ? b : a } function minPos(a, b) { return cmp(a, b) < 0 ? a : b } // Most of the external API clips given positions to make sure they // actually exist within the document. function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))} function clipPos(doc, pos) { if (pos.line < doc.first) { return Pos(doc.first, 0) } var last = doc.first + doc.size - 1; if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) } return clipToLen(pos, getLine(doc, pos.line).text.length) } function clipToLen(pos, linelen) { var ch = pos.ch; if (ch == null || ch > linelen) { return Pos(pos.line, linelen) } else if (ch < 0) { return Pos(pos.line, 0) } else { return pos } } function clipPosArray(doc, array) { var out = []; for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); } return out } var SavedContext = function(state, lookAhead) { this.state = state; this.lookAhead = lookAhead; }; var Context = function(doc, state, line, lookAhead) { this.state = state; this.doc = doc; this.line = line; this.maxLookAhead = lookAhead || 0; this.baseTokens = null; this.baseTokenPos = 1; }; Context.prototype.lookAhead = function (n) { var line = this.doc.getLine(this.line + n); if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; } return line }; Context.prototype.baseToken = function (n) { if (!this.baseTokens) { return null } while (this.baseTokens[this.baseTokenPos] <= n) { this.baseTokenPos += 2; } var type = this.baseTokens[this.baseTokenPos + 1]; return {type: type && type.replace(/( |^)overlay .*/, ""), size: this.baseTokens[this.baseTokenPos] - n} }; Context.prototype.nextLine = function () { this.line++; if (this.maxLookAhead > 0) { this.maxLookAhead--; } }; Context.fromSaved = function (doc, saved, line) { if (saved instanceof SavedContext) { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) } else { return new Context(doc, copyState(doc.mode, saved), line) } }; Context.prototype.save = function (copy) { var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state; return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state }; // Compute a style array (an array starting with a mode generation // -- for invalidation -- followed by pairs of end positions and // style strings), which is used to highlight the tokens on the // line. function highlightLine(cm, line, context, forceToEnd) { // A styles array always starts with a number identifying the // mode/overlays that it is based on (for easy invalidation). var st = [cm.state.modeGen], lineClasses = {}; // Compute the base array of styles runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); }, lineClasses, forceToEnd); var state = context.state; // Run overlays, adjust style array. var loop = function ( o ) { context.baseTokens = st; var overlay = cm.state.overlays[o], i = 1, at = 0; context.state = true; runMode(cm, line.text, overlay.mode, context, function (end, style) { var start = i; // Ensure there's a token end at the current position, and that i points at it while (at < end) { var i_end = st[i]; if (i_end > end) { st.splice(i, 1, end, st[i+1], i_end); } i += 2; at = Math.min(end, i_end); } if (!style) { return } if (overlay.opaque) { st.splice(start, i - start, end, "overlay " + style); i = start + 2; } else { for (; start < i; start += 2) { var cur = st[start+1]; st[start+1] = (cur ? cur + " " : "") + "overlay " + style; } } }, lineClasses); context.state = state; context.baseTokens = null; context.baseTokenPos = 1; }; for (var o = 0; o < cm.state.overlays.length; ++o) loop( o ); return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null} } function getLineStyles(cm, line, updateFrontier) { if (!line.styles || line.styles[0] != cm.state.modeGen) { var context = getContextBefore(cm, lineNo(line)); var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state); var result = highlightLine(cm, line, context); if (resetState) { context.state = resetState; } line.stateAfter = context.save(!resetState); line.styles = result.styles; if (result.classes) { line.styleClasses = result.classes; } else if (line.styleClasses) { line.styleClasses = null; } if (updateFrontier === cm.doc.highlightFrontier) { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); } } return line.styles } function getContextBefore(cm, n, precise) { var doc = cm.doc, display = cm.display; if (!doc.mode.startState) { return new Context(doc, true, n) } var start = findStartLine(cm, n, precise); var saved = start > doc.first && getLine(doc, start - 1).stateAfter; var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start); doc.iter(start, n, function (line) { processLine(cm, line.text, context); var pos = context.line; line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null; context.nextLine(); }); if (precise) { doc.modeFrontier = context.line; } return context } // Lightweight form of highlight -- proceed over this line and // update state, but don't save a style array. Used for lines that // aren't currently visible. function processLine(cm, text, context, startAt) { var mode = cm.doc.mode; var stream = new StringStream(text, cm.options.tabSize, context); stream.start = stream.pos = startAt || 0; if (text == "") { callBlankLine(mode, context.state); } while (!stream.eol()) { readToken(mode, stream, context.state); stream.start = stream.pos; } } function callBlankLine(mode, state) { if (mode.blankLine) { return mode.blankLine(state) } if (!mode.innerMode) { return } var inner = innerMode(mode, state); if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) } } function readToken(mode, stream, state, inner) { for (var i = 0; i < 10; i++) { if (inner) { inner[0] = innerMode(mode, state).mode; } var style = mode.token(stream, state); if (stream.pos > stream.start) { return style } } throw new Error("Mode " + mode.name + " failed to advance stream.") } var Token = function(stream, type, state) { this.start = stream.start; this.end = stream.pos; this.string = stream.current(); this.type = type || null; this.state = state; }; // Utility for getTokenAt and getLineTokens function takeToken(cm, pos, precise, asArray) { var doc = cm.doc, mode = doc.mode, style; pos = clipPos(doc, pos); var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise); var stream = new StringStream(line.text, cm.options.tabSize, context), tokens; if (asArray) { tokens = []; } while ((asArray || stream.pos < pos.ch) && !stream.eol()) { stream.start = stream.pos; style = readToken(mode, stream, context.state); if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); } } return asArray ? tokens : new Token(stream, style, context.state) } function extractLineClasses(type, output) { if (type) { for (;;) { var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/); if (!lineClass) { break } type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length); var prop = lineClass[1] ? "bgClass" : "textClass"; if (output[prop] == null) { output[prop] = lineClass[2]; } else if (!(new RegExp("(?:^|\\s)" + lineClass[2] + "(?:$|\\s)")).test(output[prop])) { output[prop] += " " + lineClass[2]; } } } return type } // Run the given mode's parser over a line, calling f for each token. function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) { var flattenSpans = mode.flattenSpans; if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; } var curStart = 0, curStyle = null; var stream = new StringStream(text, cm.options.tabSize, context), style; var inner = cm.options.addModeClass && [null]; if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); } while (!stream.eol()) { if (stream.pos > cm.options.maxHighlightLength) { flattenSpans = false; if (forceToEnd) { processLine(cm, text, context, stream.pos); } stream.pos = text.length; style = null; } else { style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses); } if (inner) { var mName = inner[0].name; if (mName) { style = "m-" + (style ? mName + " " + style : mName); } } if (!flattenSpans || curStyle != style) { while (curStart < stream.start) { curStart = Math.min(stream.start, curStart + 5000); f(curStart, curStyle); } curStyle = style; } stream.start = stream.pos; } while (curStart < stream.pos) { // Webkit seems to refuse to render text nodes longer than 57444 // characters, and returns inaccurate measurements in nodes // starting around 5000 chars. var pos = Math.min(stream.pos, curStart + 5000); f(pos, curStyle); curStart = pos; } } // Finds the line to start with when starting a parse. Tries to // find a line with a stateAfter, so that it can start with a // valid state. If that fails, it returns the line with the // smallest indentation, which tends to need the least context to // parse correctly. function findStartLine(cm, n, precise) { var minindent, minline, doc = cm.doc; var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); for (var search = n; search > lim; --search) { if (search <= doc.first) { return doc.first } var line = getLine(doc, search - 1), after = line.stateAfter; if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier)) { return search } var indented = countColumn(line.text, null, cm.options.tabSize); if (minline == null || minindent > indented) { minline = search - 1; minindent = indented; } } return minline } function retreatFrontier(doc, n) { doc.modeFrontier = Math.min(doc.modeFrontier, n); if (doc.highlightFrontier < n - 10) { return } var start = doc.first; for (var line = n - 1; line > start; line--) { var saved = getLine(doc, line).stateAfter; // change is on 3 // state on line 1 looked ahead 2 -- so saw 3 // test 1 + 2 < 3 should cover this if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) { start = line + 1; break } } doc.highlightFrontier = Math.min(doc.highlightFrontier, start); } // Optimize some code when these features are not used. var sawReadOnlySpans = false, sawCollapsedSpans = false; function seeReadOnlySpans() { sawReadOnlySpans = true; } function seeCollapsedSpans() { sawCollapsedSpans = true; } // TEXTMARKER SPANS function MarkedSpan(marker, from, to) { this.marker = marker; this.from = from; this.to = to; } // Search an array of spans for a span matching the given marker. function getMarkedSpanFor(spans, marker) { if (spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i]; if (span.marker == marker) { return span } } } } // Remove a span from an array, returning undefined if no spans are // left (we don't store arrays for lines without spans). function removeMarkedSpan(spans, span) { var r; for (var i = 0; i < spans.length; ++i) { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } } return r } // Add a span to a line. function addMarkedSpan(line, span, op) { var inThisOp = op && window.WeakSet && (op.markedSpans || (op.markedSpans = new WeakSet)); if (inThisOp && inThisOp.has(line.markedSpans)) { line.markedSpans.push(span); } else { line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; if (inThisOp) { inThisOp.add(line.markedSpans); } } span.marker.attachLine(line); } // Used for the algorithm that adjusts markers for a change in the // document. These functions cut an array of spans at a given // character position, returning an array of remaining chunks (or // undefined if nothing remains). function markedSpansBefore(old, startCh, isInsert) { var nw; if (old) { for (var i = 0; i < old.length; ++i) { var span = old[i], marker = span.marker; var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh) ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)); } } } return nw } function markedSpansAfter(old, endCh, isInsert) { var nw; if (old) { for (var i = 0; i < old.length; ++i) { var span = old[i], marker = span.marker; var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh) ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, span.to == null ? null : span.to - endCh)); } } } return nw } // Given a change object, compute the new set of marker spans that // cover the line in which the change took place. Removes spans // entirely within the change, reconnects spans belonging to the // same marker that appear on both sides of the change, and cuts off // spans partially within the change. Returns an array of span // arrays with one element for each line in (after) the change. function stretchSpansOverChange(doc, change) { if (change.full) { return null } var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; if (!oldFirst && !oldLast) { return null } var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0; // Get the spans that 'stick out' on both sides var first = markedSpansBefore(oldFirst, startCh, isInsert); var last = markedSpansAfter(oldLast, endCh, isInsert); // Next, merge those two ends var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); if (first) { // Fix up .to properties of first for (var i = 0; i < first.length; ++i) { var span = first[i]; if (span.to == null) { var found = getMarkedSpanFor(last, span.marker); if (!found) { span.to = startCh; } else if (sameLine) { span.to = found.to == null ? null : found.to + offset; } } } } if (last) { // Fix up .from in last (or move them into first in case of sameLine) for (var i$1 = 0; i$1 < last.length; ++i$1) { var span$1 = last[i$1]; if (span$1.to != null) { span$1.to += offset; } if (span$1.from == null) { var found$1 = getMarkedSpanFor(first, span$1.marker); if (!found$1) { span$1.from = offset; if (sameLine) { (first || (first = [])).push(span$1); } } } else { span$1.from += offset; if (sameLine) { (first || (first = [])).push(span$1); } } } } // Make sure we didn't create any zero-length spans if (first) { first = clearEmptySpans(first); } if (last && last != first) { last = clearEmptySpans(last); } var newMarkers = [first]; if (!sameLine) { // Fill gap with whole-line-spans var gap = change.text.length - 2, gapMarkers; if (gap > 0 && first) { for (var i$2 = 0; i$2 < first.length; ++i$2) { if (first[i$2].to == null) { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } } for (var i$3 = 0; i$3 < gap; ++i$3) { newMarkers.push(gapMarkers); } newMarkers.push(last); } return newMarkers } // Remove spans that are empty and don't have a clearWhenEmpty // option of false. function clearEmptySpans(spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i]; if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) { spans.splice(i--, 1); } } if (!spans.length) { return null } return spans } // Used to 'clip' out readOnly ranges when making a change. function removeReadOnlyRanges(doc, from, to) { var markers = null; doc.iter(from.line, to.line + 1, function (line) { if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { var mark = line.markedSpans[i].marker; if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) { (markers || (markers = [])).push(mark); } } } }); if (!markers) { return null } var parts = [{from: from, to: to}]; for (var i = 0; i < markers.length; ++i) { var mk = markers[i], m = mk.find(0); for (var j = 0; j < parts.length; ++j) { var p = parts[j]; if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue } var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to); if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) { newParts.push({from: p.from, to: m.from}); } if (dto > 0 || !mk.inclusiveRight && !dto) { newParts.push({from: m.to, to: p.to}); } parts.splice.apply(parts, newParts); j += newParts.length - 3; } } return parts } // Connect or disconnect spans from a line. function detachMarkedSpans(line) { var spans = line.markedSpans; if (!spans) { return } for (var i = 0; i < spans.length; ++i) { spans[i].marker.detachLine(line); } line.markedSpans = null; } function attachMarkedSpans(line, spans) { if (!spans) { return } for (var i = 0; i < spans.length; ++i) { spans[i].marker.attachLine(line); } line.markedSpans = spans; } // Helpers used when computing which overlapping collapsed span // counts as the larger one. function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 } function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 } // Returns a number indicating which of two overlapping collapsed // spans is larger (and thus includes the other). Falls back to // comparing ids when the spans cover exactly the same range. function compareCollapsedMarkers(a, b) { var lenDiff = a.lines.length - b.lines.length; if (lenDiff != 0) { return lenDiff } var aPos = a.find(), bPos = b.find(); var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); if (fromCmp) { return -fromCmp } var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); if (toCmp) { return toCmp } return b.id - a.id } // Find out whether a line ends or starts in a collapsed span. If // so, return the marker for that span. function collapsedSpanAtSide(line, start) { var sps = sawCollapsedSpans && line.markedSpans, found; if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { sp = sps[i]; if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; } } } return found } function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) } function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) } function collapsedSpanAround(line, ch) { var sps = sawCollapsedSpans && line.markedSpans, found; if (sps) { for (var i = 0; i < sps.length; ++i) { var sp = sps[i]; if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) && (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; } } } return found } // Test whether there exists a collapsed span that partially // overlaps (covers the start or end, but not both) of a new span. // Such overlap is not allowed. function conflictingCollapsedRange(doc, lineNo, from, to, marker) { var line = getLine(doc, lineNo); var sps = sawCollapsedSpans && line.markedSpans; if (sps) { for (var i = 0; i < sps.length; ++i) { var sp = sps[i]; if (!sp.marker.collapsed) { continue } var found = sp.marker.find(0); var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue } if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) || fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) { return true } } } } // A visual line is a line as drawn on the screen. Folding, for // example, can cause multiple logical lines to appear on the same // visual line. This finds the start of the visual line that the // given line is part of (usually that is the line itself). function visualLine(line) { var merged; while (merged = collapsedSpanAtStart(line)) { line = merged.find(-1, true).line; } return line } function visualLineEnd(line) { var merged; while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line; } return line } // Returns an array of logical lines that continue the visual line // started by the argument, or undefined if there are no such lines. function visualLineContinued(line) { var merged, lines; while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line ;(lines || (lines = [])).push(line); } return lines } // Get the line number of the start of the visual line that the // given line number is part of. function visualLineNo(doc, lineN) { var line = getLine(doc, lineN), vis = visualLine(line); if (line == vis) { return lineN } return lineNo(vis) } // Get the line number of the start of the next visual line after // the given line. function visualLineEndNo(doc, lineN) { if (lineN > doc.lastLine()) { return lineN } var line = getLine(doc, lineN), merged; if (!lineIsHidden(doc, line)) { return lineN } while (merged = collapsedSpanAtEnd(line)) { line = merged.find(1, true).line; } return lineNo(line) + 1 } // Compute whether a line is hidden. Lines count as hidden when they // are part of a visual line that starts with another line, or when // they are entirely covered by collapsed, non-widget span. function lineIsHidden(doc, line) { var sps = sawCollapsedSpans && line.markedSpans; if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { sp = sps[i]; if (!sp.marker.collapsed) { continue } if (sp.from == null) { return true } if (sp.marker.widgetNode) { continue } if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) { return true } } } } function lineIsHiddenInner(doc, line, span) { if (span.to == null) { var end = span.marker.find(1, true); return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)) } if (span.marker.inclusiveRight && span.to == line.text.length) { return true } for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) { sp = line.markedSpans[i]; if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && (sp.to == null || sp.to != span.from) && (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && lineIsHiddenInner(doc, line, sp)) { return true } } } // Find the height above the given line. function heightAtLine(lineObj) { lineObj = visualLine(lineObj); var h = 0, chunk = lineObj.parent; for (var i = 0; i < chunk.lines.length; ++i) { var line = chunk.lines[i]; if (line == lineObj) { break } else { h += line.height; } } for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { for (var i$1 = 0; i$1 < p.children.length; ++i$1) { var cur = p.children[i$1]; if (cur == chunk) { break } else { h += cur.height; } } } return h } // Compute the character length of a line, taking into account // collapsed ranges (see markText) that might hide parts, and join // other lines onto it. function lineLength(line) { if (line.height == 0) { return 0 } var len = line.text.length, merged, cur = line; while (merged = collapsedSpanAtStart(cur)) { var found = merged.find(0, true); cur = found.from.line; len += found.from.ch - found.to.ch; } cur = line; while (merged = collapsedSpanAtEnd(cur)) { var found$1 = merged.find(0, true); len -= cur.text.length - found$1.from.ch; cur = found$1.to.line; len += cur.text.length - found$1.to.ch; } return len } // Find the longest line in the document. function findMaxLine(cm) { var d = cm.display, doc = cm.doc; d.maxLine = getLine(doc, doc.first); d.maxLineLength = lineLength(d.maxLine); d.maxLineChanged = true; doc.iter(function (line) { var len = lineLength(line); if (len > d.maxLineLength) { d.maxLineLength = len; d.maxLine = line; } }); } // LINE DATA STRUCTURE // Line objects. These hold state related to a line, including // highlighting info (the styles array). var Line = function(text, markedSpans, estimateHeight) { this.text = text; attachMarkedSpans(this, markedSpans); this.height = estimateHeight ? estimateHeight(this) : 1; }; Line.prototype.lineNo = function () { return lineNo(this) }; eventMixin(Line); // Change the content (text, markers) of a line. Automatically // invalidates cached information and tries to re-estimate the // line's height. function updateLine(line, text, markedSpans, estimateHeight) { line.text = text; if (line.stateAfter) { line.stateAfter = null; } if (line.styles) { line.styles = null; } if (line.order != null) { line.order = null; } detachMarkedSpans(line); attachMarkedSpans(line, markedSpans); var estHeight = estimateHeight ? estimateHeight(line) : 1; if (estHeight != line.height) { updateLineHeight(line, estHeight); } } // Detach a line from the document tree and its markers. function cleanUpLine(line) { line.parent = null; detachMarkedSpans(line); } // Convert a style as returned by a mode (either null, or a string // containing one or more styles) to a CSS style. This is cached, // and also looks for line-wide styles. var styleToClassCache = {}, styleToClassCacheWithMode = {}; function interpretTokenStyle(style, options) { if (!style || /^\s*$/.test(style)) { return null } var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; return cache[style] || (cache[style] = style.replace(/\S+/g, "cm-$&")) } // Render the DOM representation of the text of a line. Also builds // up a 'line map', which points at the DOM nodes that represent // specific stretches of text, and is used by the measuring code. // The returned object contains the DOM node, this map, and // information about line-wide styles that were set by the mode. function buildLineContent(cm, lineView) { // The padding-right forces the element to have a 'border', which // is needed on Webkit to be able to get line-level bounding // rectangles for it (in measureChar). var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null); var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content, col: 0, pos: 0, cm: cm, trailingSpace: false, splitSpaces: cm.getOption("lineWrapping")}; lineView.measure = {}; // Iterate over the logical lines that make up this visual line. for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0); builder.pos = 0; builder.addToken = buildToken; // Optionally wire in some hacks into the token-rendering // algorithm, to deal with browser quirks. if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) { builder.addToken = buildTokenBadBidi(builder.addToken, order); } builder.map = []; var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line); insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)); if (line.styleClasses) { if (line.styleClasses.bgClass) { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); } if (line.styleClasses.textClass) { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); } } // Ensure at least a single node is present, for measuring. if (builder.map.length == 0) { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); } // Store the map and a cache object for the current logical line if (i == 0) { lineView.measure.map = builder.map; lineView.measure.cache = {}; } else { (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map) ;(lineView.measure.caches || (lineView.measure.caches = [])).push({}); } } // See issue #2901 if (webkit) { var last = builder.content.lastChild; if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab"))) { builder.content.className = "cm-tab-wrap-hack"; } } signal(cm, "renderLine", cm, lineView.line, builder.pre); if (builder.pre.className) { builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); } return builder } function defaultSpecialCharPlaceholder(ch) { var token = elt("span", "\u2022", "cm-invalidchar"); token.title = "\\u" + ch.charCodeAt(0).toString(16); token.setAttribute("aria-label", token.title); return token } // Build up the DOM representation for a single token, and add it to // the line map. Takes care to render special characters separately. function buildToken(builder, text, style, startStyle, endStyle, css, attributes) { if (!text) { return } var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text; var special = builder.cm.state.specialChars, mustWrap = false; var content; if (!special.test(text)) { builder.col += text.length; content = document.createTextNode(displayText); builder.map.push(builder.pos, builder.pos + text.length, content); if (ie && ie_version < 9) { mustWrap = true; } builder.pos += text.length; } else { content = document.createDocumentFragment(); var pos = 0; while (true) { special.lastIndex = pos; var m = special.exec(text); var skipped = m ? m.index - pos : text.length - pos; if (skipped) { var txt = document.createTextNode(displayText.slice(pos, pos + skipped)); if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])); } else { content.appendChild(txt); } builder.map.push(builder.pos, builder.pos + skipped, txt); builder.col += skipped; builder.pos += skipped; } if (!m) { break } pos += skipped + 1; var txt$1 = (void 0); if (m[0] == "\t") { var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); txt$1.setAttribute("role", "presentation"); txt$1.setAttribute("cm-text", "\t"); builder.col += tabWidth; } else if (m[0] == "\r" || m[0] == "\n") { txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar")); txt$1.setAttribute("cm-text", m[0]); builder.col += 1; } else { txt$1 = builder.cm.options.specialCharPlaceholder(m[0]); txt$1.setAttribute("cm-text", m[0]); if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])); } else { content.appendChild(txt$1); } builder.col += 1; } builder.map.push(builder.pos, builder.pos + 1, txt$1); builder.pos++; } } builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32; if (style || startStyle || endStyle || mustWrap || css || attributes) { var fullStyle = style || ""; if (startStyle) { fullStyle += startStyle; } if (endStyle) { fullStyle += endStyle; } var token = elt("span", [content], fullStyle, css); if (attributes) { for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class") { token.setAttribute(attr, attributes[attr]); } } } return builder.content.appendChild(token) } builder.content.appendChild(content); } // Change some spaces to NBSP to prevent the browser from collapsing // trailing spaces at the end of a line when rendering text (issue #1362). function splitSpaces(text, trailingBefore) { if (text.length > 1 && !/ /.test(text)) { return text } var spaceBefore = trailingBefore, result = ""; for (var i = 0; i < text.length; i++) { var ch = text.charAt(i); if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32)) { ch = "\u00a0"; } result += ch; spaceBefore = ch == " "; } return result } // Work around nonsense dimensions being reported for stretches of // right-to-left text. function buildTokenBadBidi(inner, order) { return function (builder, text, style, startStyle, endStyle, css, attributes) { style = style ? style + " cm-force-border" : "cm-force-border"; var start = builder.pos, end = start + text.length; for (;;) { // Find the part that overlaps with the start of this text var part = (void 0); for (var i = 0; i < order.length; i++) { part = order[i]; if (part.to > start && part.from <= start) { break } } if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) } inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes); startStyle = null; text = text.slice(part.to - start); start = part.to; } } } function buildCollapsedSpan(builder, size, marker, ignoreWidget) { var widget = !ignoreWidget && marker.widgetNode; if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); } if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { if (!widget) { widget = builder.content.appendChild(document.createElement("span")); } widget.setAttribute("cm-marker", marker.id); } if (widget) { builder.cm.display.input.setUneditable(widget); builder.content.appendChild(widget); } builder.pos += size; builder.trailingSpace = false; } // Outputs a number of spans to make up a line, taking highlighting // and marked text into account. function insertLineContent(line, builder, styles) { var spans = line.markedSpans, allText = line.text, at = 0; if (!spans) { for (var i$1 = 1; i$1 < styles.length; i$1+=2) { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); } return } var len = allText.length, pos = 0, i = 1, text = "", style, css; var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes; for (;;) { if (nextChange == pos) { // Update current marker set spanStyle = spanEndStyle = spanStartStyle = css = ""; attributes = null; collapsed = null; nextChange = Infinity; var foundBookmarks = [], endStyles = (void 0); for (var j = 0; j < spans.length; ++j) { var sp = spans[j], m = sp.marker; if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { foundBookmarks.push(m); } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { if (sp.to != null && sp.to != pos && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } if (m.className) { spanStyle += " " + m.className; } if (m.css) { css = (css ? css + ";" : "") + m.css; } if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle; } if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); } // support for the old title property // https://github.com/codemirror/CodeMirror/pull/5673 if (m.title) { (attributes || (attributes = {})).title = m.title; } if (m.attributes) { for (var attr in m.attributes) { (attributes || (attributes = {}))[attr] = m.attributes[attr]; } } if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) { collapsed = sp; } } else if (sp.from > pos && nextChange > sp.from) { nextChange = sp.from; } } if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1]; } } } if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } } if (collapsed && (collapsed.from || 0) == pos) { buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, collapsed.marker, collapsed.from == null); if (collapsed.to == null) { return } if (collapsed.to == pos) { collapsed = false; } } } if (pos >= len) { break } var upto = Math.min(len, nextChange); while (true) { if (text) { var end = pos + text.length; if (!collapsed) { var tokenText = end > upto ? text.slice(0, upto - pos) : text; builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes); } if (end >= upto) {text = text.slice(upto - pos); pos = upto; break} pos = end; spanStartStyle = ""; } text = allText.slice(at, at = styles[i++]); style = interpretTokenStyle(styles[i++], builder.cm.options); } } } // These objects are used to represent the visible (currently drawn) // part of the document. A LineView may correspond to multiple // logical lines, if those are connected by collapsed ranges. function LineView(doc, line, lineN) { // The starting line this.line = line; // Continuing lines, if any this.rest = visualLineContinued(line); // Number of logical lines in this visual line this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1; this.node = this.text = null; this.hidden = lineIsHidden(doc, line); } // Create a range of LineView objects for the given lines. function buildViewArray(cm, from, to) { var array = [], nextPos; for (var pos = from; pos < to; pos = nextPos) { var view = new LineView(cm.doc, getLine(cm.doc, pos), pos); nextPos = pos + view.size; array.push(view); } return array } var operationGroup = null; function pushOperation(op) { if (operationGroup) { operationGroup.ops.push(op); } else { op.ownsGroup = operationGroup = { ops: [op], delayedCallbacks: [] }; } } function fireCallbacksForOps(group) { // Calls delayed callbacks and cursorActivity handlers until no // new ones appear var callbacks = group.delayedCallbacks, i = 0; do { for (; i < callbacks.length; i++) { callbacks[i].call(null); } for (var j = 0; j < group.ops.length; j++) { var op = group.ops[j]; if (op.cursorActivityHandlers) { while (op.cursorActivityCalled < op.cursorActivityHandlers.length) { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } } } } while (i < callbacks.length) } function finishOperation(op, endCb) { var group = op.ownsGroup; if (!group) { return } try { fireCallbacksForOps(group); } finally { operationGroup = null; endCb(group); } } var orphanDelayedCallbacks = null; // Often, we want to signal events at a point where we are in the // middle of some work, but don't want the handler to start calling // other methods on the editor, which might be in an inconsistent // state or simply not expect any other events to happen. // signalLater looks whether there are any handlers, and schedules // them to be executed when the last operation ends, or, if no // operation is active, when a timeout fires. function signalLater(emitter, type /*, values...*/) { var arr = getHandlers(emitter, type); if (!arr.length) { return } var args = Array.prototype.slice.call(arguments, 2), list; if (operationGroup) { list = operationGroup.delayedCallbacks; } else if (orphanDelayedCallbacks) { list = orphanDelayedCallbacks; } else { list = orphanDelayedCallbacks = []; setTimeout(fireOrphanDelayed, 0); } var loop = function ( i ) { list.push(function () { return arr[i].apply(null, args); }); }; for (var i = 0; i < arr.length; ++i) loop( i ); } function fireOrphanDelayed() { var delayed = orphanDelayedCallbacks; orphanDelayedCallbacks = null; for (var i = 0; i < delayed.length; ++i) { delayed[i](); } } // When an aspect of a line changes, a string is added to // lineView.changes. This updates the relevant part of the line's // DOM structure. function updateLineForChanges(cm, lineView, lineN, dims) { for (var j = 0; j < lineView.changes.length; j++) { var type = lineView.changes[j]; if (type == "text") { updateLineText(cm, lineView); } else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims); } else if (type == "class") { updateLineClasses(cm, lineView); } else if (type == "widget") { updateLineWidgets(cm, lineView, dims); } } lineView.changes = null; } // Lines with gutter elements, widgets or a background class need to // be wrapped, and have the extra elements added to the wrapper div function ensureLineWrapped(lineView) { if (lineView.node == lineView.text) { lineView.node = elt("div", null, null, "position: relative"); if (lineView.text.parentNode) { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); } lineView.node.appendChild(lineView.text); if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; } } return lineView.node } function updateLineBackground(cm, lineView) { var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass; if (cls) { cls += " CodeMirror-linebackground"; } if (lineView.background) { if (cls) { lineView.background.className = cls; } else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; } } else if (cls) { var wrap = ensureLineWrapped(lineView); lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild); cm.display.input.setUneditable(lineView.background); } } // Wrapper around buildLineContent which will reuse the structure // in display.externalMeasured when possible. function getLineContent(cm, lineView) { var ext = cm.display.externalMeasured; if (ext && ext.line == lineView.line) { cm.display.externalMeasured = null; lineView.measure = ext.measure; return ext.built } return buildLineContent(cm, lineView) } // Redraw the line's text. Interacts with the background and text // classes because the mode may output tokens that influence these // classes. function updateLineText(cm, lineView) { var cls = lineView.text.className; var built = getLineContent(cm, lineView); if (lineView.text == lineView.node) { lineView.node = built.pre; } lineView.text.parentNode.replaceChild(built.pre, lineView.text); lineView.text = built.pre; if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { lineView.bgClass = built.bgClass; lineView.textClass = built.textClass; updateLineClasses(cm, lineView); } else if (cls) { lineView.text.className = cls; } } function updateLineClasses(cm, lineView) { updateLineBackground(cm, lineView); if (lineView.line.wrapClass) { ensureLineWrapped(lineView).className = lineView.line.wrapClass; } else if (lineView.node != lineView.text) { lineView.node.className = ""; } var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass; lineView.text.className = textClass || ""; } function updateLineGutter(cm, lineView, lineN, dims) { if (lineView.gutter) { lineView.node.removeChild(lineView.gutter); lineView.gutter = null; } if (lineView.gutterBackground) { lineView.node.removeChild(lineView.gutterBackground); lineView.gutterBackground = null; } if (lineView.line.gutterClass) { var wrap = ensureLineWrapped(lineView); lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass, ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px")); cm.display.input.setUneditable(lineView.gutterBackground); wrap.insertBefore(lineView.gutterBackground, lineView.text); } var markers = lineView.line.gutterMarkers; if (cm.options.lineNumbers || markers) { var wrap$1 = ensureLineWrapped(lineView); var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px")); gutterWrap.setAttribute("aria-hidden", "true"); cm.display.input.setUneditable(gutterWrap); wrap$1.insertBefore(gutterWrap, lineView.text); if (lineView.line.gutterClass) { gutterWrap.className += " " + lineView.line.gutterClass; } if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) { lineView.lineNumber = gutterWrap.appendChild( elt("div", lineNumberFor(cm.options, lineN), "CodeMirror-linenumber CodeMirror-gutter-elt", ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))); } if (markers) { for (var k = 0; k < cm.display.gutterSpecs.length; ++k) { var id = cm.display.gutterSpecs[k].className, found = markers.hasOwnProperty(id) && markers[id]; if (found) { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))); } } } } } function updateLineWidgets(cm, lineView, dims) { if (lineView.alignable) { lineView.alignable = null; } var isWidget = classTest("CodeMirror-linewidget"); for (var node = lineView.node.firstChild, next = (void 0); node; node = next) { next = node.nextSibling; if (isWidget.test(node.className)) { lineView.node.removeChild(node); } } insertLineWidgets(cm, lineView, dims); } // Build a line's DOM representation from scratch function buildLineElement(cm, lineView, lineN, dims) { var built = getLineContent(cm, lineView); lineView.text = lineView.node = built.pre; if (built.bgClass) { lineView.bgClass = built.bgClass; } if (built.textClass) { lineView.textClass = built.textClass; } updateLineClasses(cm, lineView); updateLineGutter(cm, lineView, lineN, dims); insertLineWidgets(cm, lineView, dims); return lineView.node } // A lineView may contain multiple logical lines (when merged by // collapsed spans). The widgets for all of them need to be drawn. function insertLineWidgets(cm, lineView, dims) { insertLineWidgetsFor(cm, lineView.line, lineView, dims, true); if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } } } function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { if (!line.widgets) { return } var wrap = ensureLineWrapped(lineView); for (var i = 0, ws = line.widgets; i < ws.length; ++i) { var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget" + (widget.className ? " " + widget.className : "")); if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); } positionLineWidget(widget, node, lineView, dims); cm.display.input.setUneditable(node); if (allowAbove && widget.above) { wrap.insertBefore(node, lineView.gutter || lineView.text); } else { wrap.appendChild(node); } signalLater(widget, "redraw"); } } function positionLineWidget(widget, node, lineView, dims) { if (widget.noHScroll) { (lineView.alignable || (lineView.alignable = [])).push(node); var width = dims.wrapperWidth; node.style.left = dims.fixedPos + "px"; if (!widget.coverGutter) { width -= dims.gutterTotalWidth; node.style.paddingLeft = dims.gutterTotalWidth + "px"; } node.style.width = width + "px"; } if (widget.coverGutter) { node.style.zIndex = 5; node.style.position = "relative"; if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px"; } } } function widgetHeight(widget) { if (widget.height != null) { return widget.height } var cm = widget.doc.cm; if (!cm) { return 0 } if (!contains(document.body, widget.node)) { var parentStyle = "position: relative;"; if (widget.coverGutter) { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; } if (widget.noHScroll) { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; } removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)); } return widget.height = widget.node.parentNode.offsetHeight } // Return true when the given mouse event happened in a widget function eventInWidget(display, e) { for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || (n.parentNode == display.sizer && n != display.mover)) { return true } } } // POSITION MEASUREMENT function paddingTop(display) {return display.lineSpace.offsetTop} function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight} function paddingH(display) { if (display.cachedPaddingH) { return display.cachedPaddingH } var e = removeChildrenAndAdd(display.measure, elt("pre", "x", "CodeMirror-line-like")); var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle; var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}; if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; } return data } function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth } function displayWidth(cm) { return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth } function displayHeight(cm) { return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight } // Ensure the lineView.wrapping.heights array is populated. This is // an array of bottom offsets for the lines that make up a drawn // line. When lineWrapping is on, there might be more than one // height. function ensureLineHeights(cm, lineView, rect) { var wrapping = cm.options.lineWrapping; var curWidth = wrapping && displayWidth(cm); if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { var heights = lineView.measure.heights = []; if (wrapping) { lineView.measure.width = curWidth; var rects = lineView.text.firstChild.getClientRects(); for (var i = 0; i < rects.length - 1; i++) { var cur = rects[i], next = rects[i + 1]; if (Math.abs(cur.bottom - next.bottom) > 2) { heights.push((cur.bottom + next.top) / 2 - rect.top); } } } heights.push(rect.bottom - rect.top); } } // Find a line map (mapping character offsets to text nodes) and a // measurement cache for the given line number. (A line view might // contain multiple lines when collapsed ranges are present.) function mapFromLineView(lineView, line, lineN) { if (lineView.line == line) { return {map: lineView.measure.map, cache: lineView.measure.cache} } if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) { if (lineView.rest[i] == line) { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } } for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) { if (lineNo(lineView.rest[i$1]) > lineN) { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } } } } // Render a line into the hidden node display.externalMeasured. Used // when measurement is needed for a line that's not in the viewport. function updateExternalMeasurement(cm, line) { line = visualLine(line); var lineN = lineNo(line); var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN); view.lineN = lineN; var built = view.built = buildLineContent(cm, view); view.text = built.pre; removeChildrenAndAdd(cm.display.lineMeasure, built.pre); return view } // Get a {top, bottom, left, right} box (in line-local coordinates) // for a given character. function measureChar(cm, line, ch, bias) { return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias) } // Find a line view that corresponds to the given line number. function findViewForLine(cm, lineN) { if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) { return cm.display.view[findViewIndex(cm, lineN)] } var ext = cm.display.externalMeasured; if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) { return ext } } // Measurement can be split in two steps, the set-up work that // applies to the whole line, and the measurement of the actual // character. Functions like coordsChar, that need to do a lot of // measurements in a row, can thus ensure that the set-up work is // only done once. function prepareMeasureForLine(cm, line) { var lineN = lineNo(line); var view = findViewForLine(cm, lineN); if (view && !view.text) { view = null; } else if (view && view.changes) { updateLineForChanges(cm, view, lineN, getDimensions(cm)); cm.curOp.forceUpdate = true; } if (!view) { view = updateExternalMeasurement(cm, line); } var info = mapFromLineView(view, line, lineN); return { line: line, view: view, rect: null, map: info.map, cache: info.cache, before: info.before, hasHeights: false } } // Given a prepared measurement object, measures the position of an // actual character (or fetches it from the cache). function measureCharPrepared(cm, prepared, ch, bias, varHeight) { if (prepared.before) { ch = -1; } var key = ch + (bias || ""), found; if (prepared.cache.hasOwnProperty(key)) { found = prepared.cache[key]; } else { if (!prepared.rect) { prepared.rect = prepared.view.text.getBoundingClientRect(); } if (!prepared.hasHeights) { ensureLineHeights(cm, prepared.view, prepared.rect); prepared.hasHeights = true; } found = measureCharInner(cm, prepared, ch, bias); if (!found.bogus) { prepared.cache[key] = found; } } return {left: found.left, right: found.right, top: varHeight ? found.rtop : found.top, bottom: varHeight ? found.rbottom : found.bottom} } var nullRect = {left: 0, right: 0, top: 0, bottom: 0}; function nodeAndOffsetInLineMap(map, ch, bias) { var node, start, end, collapse, mStart, mEnd; // First, search the line map for the text node corresponding to, // or closest to, the target character. for (var i = 0; i < map.length; i += 3) { mStart = map[i]; mEnd = map[i + 1]; if (ch < mStart) { start = 0; end = 1; collapse = "left"; } else if (ch < mEnd) { start = ch - mStart; end = start + 1; } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { end = mEnd - mStart; start = end - 1; if (ch >= mEnd) { collapse = "right"; } } if (start != null) { node = map[i + 2]; if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) { collapse = bias; } if (bias == "left" && start == 0) { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { node = map[(i -= 3) + 2]; collapse = "left"; } } if (bias == "right" && start == mEnd - mStart) { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { node = map[(i += 3) + 2]; collapse = "right"; } } break } } return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd} } function getUsefulRect(rects, bias) { var rect = nullRect; if (bias == "left") { for (var i = 0; i < rects.length; i++) { if ((rect = rects[i]).left != rect.right) { break } } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) { if ((rect = rects[i$1]).left != rect.right) { break } } } return rect } function measureCharInner(cm, prepared, ch, bias) { var place = nodeAndOffsetInLineMap(prepared.map, ch, bias); var node = place.node, start = place.start, end = place.end, collapse = place.collapse; var rect; if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; } while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; } if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) { rect = node.parentNode.getBoundingClientRect(); } else { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); } if (rect.left || rect.right || start == 0) { break } end = start; start = start - 1; collapse = "right"; } if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); } } else { // If it is a widget, simply get the box for the whole widget. if (start > 0) { collapse = bias = "right"; } var rects; if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) { rect = rects[bias == "right" ? rects.length - 1 : 0]; } else { rect = node.getBoundingClientRect(); } } if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { var rSpan = node.parentNode.getClientRects()[0]; if (rSpan) { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; } else { rect = nullRect; } } var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top; var mid = (rtop + rbot) / 2; var heights = prepared.view.measure.heights; var i = 0; for (; i < heights.length - 1; i++) { if (mid < heights[i]) { break } } var top = i ? heights[i - 1] : 0, bot = heights[i]; var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, top: top, bottom: bot}; if (!rect.left && !rect.right) { result.bogus = true; } if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; } return result } // Work around problem with bounding client rects on ranges being // returned incorrectly when zoomed on IE10 and below. function maybeUpdateRectForZooming(measure, rect) { if (!window.screen || screen.logicalXDPI == null || screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) { return rect } var scaleX = screen.logicalXDPI / screen.deviceXDPI; var scaleY = screen.logicalYDPI / screen.deviceYDPI; return {left: rect.left * scaleX, right: rect.right * scaleX, top: rect.top * scaleY, bottom: rect.bottom * scaleY} } function clearLineMeasurementCacheFor(lineView) { if (lineView.measure) { lineView.measure.cache = {}; lineView.measure.heights = null; if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) { lineView.measure.caches[i] = {}; } } } } function clearLineMeasurementCache(cm) { cm.display.externalMeasure = null; removeChildren(cm.display.lineMeasure); for (var i = 0; i < cm.display.view.length; i++) { clearLineMeasurementCacheFor(cm.display.view[i]); } } function clearCaches(cm) { clearLineMeasurementCache(cm); cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null; if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; } cm.display.lineNumChars = null; } function pageScrollX() { // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206 // which causes page_Offset and bounding client rects to use // different reference viewports and invalidate our calculations. if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) } return window.pageXOffset || (document.documentElement || document.body).scrollLeft } function pageScrollY() { if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) } return window.pageYOffset || (document.documentElement || document.body).scrollTop } function widgetTopHeight(lineObj) { var ref = visualLine(lineObj); var widgets = ref.widgets; var height = 0; if (widgets) { for (var i = 0; i < widgets.length; ++i) { if (widgets[i].above) { height += widgetHeight(widgets[i]); } } } return height } // Converts a {top, bottom, left, right} box from line-local // coordinates into another coordinate system. Context may be one of // "line", "div" (display.lineDiv), "local"./null (editor), "window", // or "page". function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) { if (!includeWidgets) { var height = widgetTopHeight(lineObj); rect.top += height; rect.bottom += height; } if (context == "line") { return rect } if (!context) { context = "local"; } var yOff = heightAtLine(lineObj); if (context == "local") { yOff += paddingTop(cm.display); } else { yOff -= cm.display.viewOffset; } if (context == "page" || context == "window") { var lOff = cm.display.lineSpace.getBoundingClientRect(); yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); rect.left += xOff; rect.right += xOff; } rect.top += yOff; rect.bottom += yOff; return rect } // Coverts a box from "div" coords to another coordinate system. // Context may be "window", "page", "div", or "local"./null. function fromCoordSystem(cm, coords, context) { if (context == "div") { return coords } var left = coords.left, top = coords.top; // First move into "page" coordinate system if (context == "page") { left -= pageScrollX(); top -= pageScrollY(); } else if (context == "local" || !context) { var localBox = cm.display.sizer.getBoundingClientRect(); left += localBox.left; top += localBox.top; } var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect(); return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top} } function charCoords(cm, pos, context, lineObj, bias) { if (!lineObj) { lineObj = getLine(cm.doc, pos.line); } return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context) } // Returns a box for a given cursor position, which may have an // 'other' property containing the position of the secondary cursor // on a bidi boundary. // A cursor Pos(line, char, "before") is on the same visual line as `char - 1` // and after `char - 1` in writing order of `char - 1` // A cursor Pos(line, char, "after") is on the same visual line as `char` // and before `char` in writing order of `char` // Examples (upper-case letters are RTL, lower-case are LTR): // Pos(0, 1, ...) // before after // ab a|b a|b // aB a|B aB| // Ab |Ab A|b // AB B|A B|A // Every position after the last character on a line is considered to stick // to the last character on the line. function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { lineObj = lineObj || getLine(cm.doc, pos.line); if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); } function get(ch, right) { var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight); if (right) { m.left = m.right; } else { m.right = m.left; } return intoCoordSystem(cm, lineObj, m, context) } var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky; if (ch >= lineObj.text.length) { ch = lineObj.text.length; sticky = "before"; } else if (ch <= 0) { ch = 0; sticky = "after"; } if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") } function getBidi(ch, partPos, invert) { var part = order[partPos], right = part.level == 1; return get(invert ? ch - 1 : ch, right != invert) } var partPos = getBidiPartAt(order, ch, sticky); var other = bidiOther; var val = getBidi(ch, partPos, sticky == "before"); if (other != null) { val.other = getBidi(ch, other, sticky != "before"); } return val } // Used to cheaply estimate the coordinates for a position. Used for // intermediate scroll updates. function estimateCoords(cm, pos) { var left = 0; pos = clipPos(cm.doc, pos); if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; } var lineObj = getLine(cm.doc, pos.line); var top = heightAtLine(lineObj) + paddingTop(cm.display); return {left: left, right: left, top: top, bottom: top + lineObj.height} } // Positions returned by coordsChar contain some extra information. // xRel is the relative x position of the input coordinates compared // to the found position (so xRel > 0 means the coordinates are to // the right of the character position, for example). When outside // is true, that means the coordinates lie outside the line's // vertical range. function PosWithInfo(line, ch, sticky, outside, xRel) { var pos = Pos(line, ch, sticky); pos.xRel = xRel; if (outside) { pos.outside = outside; } return pos } // Compute the character position closest to the given coordinates. // Input must be lineSpace-local ("div" coordinate system). function coordsChar(cm, x, y) { var doc = cm.doc; y += cm.display.viewOffset; if (y < 0) { return PosWithInfo(doc.first, 0, null, -1, -1) } var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1; if (lineN > last) { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, 1, 1) } if (x < 0) { x = 0; } var lineObj = getLine(doc, lineN); for (;;) { var found = coordsCharInner(cm, lineObj, lineN, x, y); var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 || found.outside > 0 ? 1 : 0)); if (!collapsed) { return found } var rangeEnd = collapsed.find(1); if (rangeEnd.line == lineN) { return rangeEnd } lineObj = getLine(doc, lineN = rangeEnd.line); } } function wrappedLineExtent(cm, lineObj, preparedMeasure, y) { y -= widgetTopHeight(lineObj); var end = lineObj.text.length; var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0); end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end); return {begin: begin, end: end} } function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) { if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); } var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top; return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop) } // Returns true if the given side of a box is after the given // coordinates, in top-to-bottom, left-to-right order. function boxIsAfter(box, x, y, left) { return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x } function coordsCharInner(cm, lineObj, lineNo, x, y) { // Move y into line-local coordinate space y -= heightAtLine(lineObj); var preparedMeasure = prepareMeasureForLine(cm, lineObj); // When directly calling `measureCharPrepared`, we have to adjust // for the widgets at this line. var widgetHeight = widgetTopHeight(lineObj); var begin = 0, end = lineObj.text.length, ltr = true; var order = getOrder(lineObj, cm.doc.direction); // If the line isn't plain left-to-right text, first figure out // which bidi section the coordinates fall into. if (order) { var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart) (cm, lineObj, lineNo, preparedMeasure, order, x, y); ltr = part.level != 1; // The awkward -1 offsets are needed because findFirst (called // on these below) will treat its first bound as inclusive, // second as exclusive, but we want to actually address the // characters in the part's range begin = ltr ? part.from : part.to - 1; end = ltr ? part.to : part.from - 1; } // A binary search to find the first character whose bounding box // starts after the coordinates. If we run across any whose box wrap // the coordinates, store that. var chAround = null, boxAround = null; var ch = findFirst(function (ch) { var box = measureCharPrepared(cm, preparedMeasure, ch); box.top += widgetHeight; box.bottom += widgetHeight; if (!boxIsAfter(box, x, y, false)) { return false } if (box.top <= y && box.left <= x) { chAround = ch; boxAround = box; } return true }, begin, end); var baseX, sticky, outside = false; // If a box around the coordinates was found, use that if (boxAround) { // Distinguish coordinates nearer to the left or right side of the box var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr; ch = chAround + (atStart ? 0 : 1); sticky = atStart ? "after" : "before"; baseX = atLeft ? boxAround.left : boxAround.right; } else { // (Adjust for extended bound, if necessary.) if (!ltr && (ch == end || ch == begin)) { ch++; } // To determine which side to associate with, get the box to the // left of the character and compare it's vertical position to the // coordinates sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" : (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ? "after" : "before"; // Now get accurate coordinates for this place, in order to get a // base X position var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure); baseX = coords.left; outside = y < coords.top ? -1 : y >= coords.bottom ? 1 : 0; } ch = skipExtendingChars(lineObj.text, ch, 1); return PosWithInfo(lineNo, ch, sticky, outside, x - baseX) } function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) { // Bidi parts are sorted left-to-right, and in a non-line-wrapping // situation, we can take this ordering to correspond to the visual // ordering. This finds the first part whose end is after the given // coordinates. var index = findFirst(function (i) { var part = order[i], ltr = part.level != 1; return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"), "line", lineObj, preparedMeasure), x, y, true) }, 0, order.length - 1); var part = order[index]; // If this isn't the first part, the part's start is also after // the coordinates, and the coordinates aren't on the same line as // that start, move one part back. if (index > 0) { var ltr = part.level != 1; var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"), "line", lineObj, preparedMeasure); if (boxIsAfter(start, x, y, true) && start.top > y) { part = order[index - 1]; } } return part } function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) { // In a wrapped line, rtl text on wrapping boundaries can do things // that don't correspond to the ordering in our `order` array at // all, so a binary search doesn't work, and we want to return a // part that only spans one line so that the binary search in // coordsCharInner is safe. As such, we first find the extent of the // wrapped line, and then do a flat search in which we discard any // spans that aren't on the line. var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y); var begin = ref.begin; var end = ref.end; if (/\s/.test(lineObj.text.charAt(end - 1))) { end--; } var part = null, closestDist = null; for (var i = 0; i < order.length; i++) { var p = order[i]; if (p.from >= end || p.to <= begin) { continue } var ltr = p.level != 1; var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right; // Weigh against spans ending before this, so that they are only // picked if nothing ends after var dist = endX < x ? x - endX + 1e9 : endX - x; if (!part || closestDist > dist) { part = p; closestDist = dist; } } if (!part) { part = order[order.length - 1]; } // Clip the part to the wrapped line. if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; } if (part.to > end) { part = {from: part.from, to: end, level: part.level}; } return part } var measureText; // Compute the default text height. function textHeight(display) { if (display.cachedTextHeight != null) { return display.cachedTextHeight } if (measureText == null) { measureText = elt("pre", null, "CodeMirror-line-like"); // Measure a bunch of lines, for browsers that compute // fractional heights. for (var i = 0; i < 49; ++i) { measureText.appendChild(document.createTextNode("x")); measureText.appendChild(elt("br")); } measureText.appendChild(document.createTextNode("x")); } removeChildrenAndAdd(display.measure, measureText); var height = measureText.offsetHeight / 50; if (height > 3) { display.cachedTextHeight = height; } removeChildren(display.measure); return height || 1 } // Compute the default character width. function charWidth(display) { if (display.cachedCharWidth != null) { return display.cachedCharWidth } var anchor = elt("span", "xxxxxxxxxx"); var pre = elt("pre", [anchor], "CodeMirror-line-like"); removeChildrenAndAdd(display.measure, pre); var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10; if (width > 2) { display.cachedCharWidth = width; } return width || 10 } // Do a bulk-read of the DOM positions and sizes needed to draw the // view, so that we don't interleave reading and writing to the DOM. function getDimensions(cm) { var d = cm.display, left = {}, width = {}; var gutterLeft = d.gutters.clientLeft; for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { var id = cm.display.gutterSpecs[i].className; left[id] = n.offsetLeft + n.clientLeft + gutterLeft; width[id] = n.clientWidth; } return {fixedPos: compensateForHScroll(d), gutterTotalWidth: d.gutters.offsetWidth, gutterLeft: left, gutterWidth: width, wrapperWidth: d.wrapper.clientWidth} } // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, // but using getBoundingClientRect to get a sub-pixel-accurate // result. function compensateForHScroll(display) { return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left } // Returns a function that estimates the height of a line, to use as // first approximation until the line becomes visible (and is thus // properly measurable). function estimateHeight(cm) { var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); return function (line) { if (lineIsHidden(cm.doc, line)) { return 0 } var widgetsHeight = 0; if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; } } } if (wrapping) { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th } else { return widgetsHeight + th } } } function estimateLineHeights(cm) { var doc = cm.doc, est = estimateHeight(cm); doc.iter(function (line) { var estHeight = est(line); if (estHeight != line.height) { updateLineHeight(line, estHeight); } }); } // Given a mouse event, find the corresponding position. If liberal // is false, it checks whether a gutter or scrollbar was clicked, // and returns null if it was. forRect is used by rectangular // selections, and tries to estimate a character position even for // coordinates beyond the right of the text. function posFromMouse(cm, e, liberal, forRect) { var display = cm.display; if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null } var x, y, space = display.lineSpace.getBoundingClientRect(); // Fails unpredictably on IE[67] when mouse is dragged around quickly. try { x = e.clientX - space.left; y = e.clientY - space.top; } catch (e$1) { return null } var coords = coordsChar(cm, x, y), line; if (forRect && coords.xRel > 0 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length; coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)); } return coords } // Find the view element corresponding to a given line. Return null // when the line isn't visible. function findViewIndex(cm, n) { if (n >= cm.display.viewTo) { return null } n -= cm.display.viewFrom; if (n < 0) { return null } var view = cm.display.view; for (var i = 0; i < view.length; i++) { n -= view[i].size; if (n < 0) { return i } } } // Updates the display.view data structure for a given change to the // document. From and to are in pre-change coordinates. Lendiff is // the amount of lines added or subtracted by the change. This is // used for changes that span multiple lines, or change the way // lines are divided into visual lines. regLineChange (below) // registers single-line changes. function regChange(cm, from, to, lendiff) { if (from == null) { from = cm.doc.first; } if (to == null) { to = cm.doc.first + cm.doc.size; } if (!lendiff) { lendiff = 0; } var display = cm.display; if (lendiff && to < display.viewTo && (display.updateLineNumbers == null || display.updateLineNumbers > from)) { display.updateLineNumbers = from; } cm.curOp.viewChanged = true; if (from >= display.viewTo) { // Change after if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) { resetView(cm); } } else if (to <= display.viewFrom) { // Change before if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { resetView(cm); } else { display.viewFrom += lendiff; display.viewTo += lendiff; } } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap resetView(cm); } else if (from <= display.viewFrom) { // Top overlap var cut = viewCuttingPoint(cm, to, to + lendiff, 1); if (cut) { display.view = display.view.slice(cut.index); display.viewFrom = cut.lineN; display.viewTo += lendiff; } else { resetView(cm); } } else if (to >= display.viewTo) { // Bottom overlap var cut$1 = viewCuttingPoint(cm, from, from, -1); if (cut$1) { display.view = display.view.slice(0, cut$1.index); display.viewTo = cut$1.lineN; } else { resetView(cm); } } else { // Gap in the middle var cutTop = viewCuttingPoint(cm, from, from, -1); var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1); if (cutTop && cutBot) { display.view = display.view.slice(0, cutTop.index) .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) .concat(display.view.slice(cutBot.index)); display.viewTo += lendiff; } else { resetView(cm); } } var ext = display.externalMeasured; if (ext) { if (to < ext.lineN) { ext.lineN += lendiff; } else if (from < ext.lineN + ext.size) { display.externalMeasured = null; } } } // Register a change to a single line. Type must be one of "text", // "gutter", "class", "widget" function regLineChange(cm, line, type) { cm.curOp.viewChanged = true; var display = cm.display, ext = cm.display.externalMeasured; if (ext && line >= ext.lineN && line < ext.lineN + ext.size) { display.externalMeasured = null; } if (line < display.viewFrom || line >= display.viewTo) { return } var lineView = display.view[findViewIndex(cm, line)]; if (lineView.node == null) { return } var arr = lineView.changes || (lineView.changes = []); if (indexOf(arr, type) == -1) { arr.push(type); } } // Clear the view. function resetView(cm) { cm.display.viewFrom = cm.display.viewTo = cm.doc.first; cm.display.view = []; cm.display.viewOffset = 0; } function viewCuttingPoint(cm, oldN, newN, dir) { var index = findViewIndex(cm, oldN), diff, view = cm.display.view; if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) { return {index: index, lineN: newN} } var n = cm.display.viewFrom; for (var i = 0; i < index; i++) { n += view[i].size; } if (n != oldN) { if (dir > 0) { if (index == view.length - 1) { return null } diff = (n + view[index].size) - oldN; index++; } else { diff = n - oldN; } oldN += diff; newN += diff; } while (visualLineNo(cm.doc, newN) != newN) { if (index == (dir < 0 ? 0 : view.length - 1)) { return null } newN += dir * view[index - (dir < 0 ? 1 : 0)].size; index += dir; } return {index: index, lineN: newN} } // Force the view to cover a given range, adding empty view element // or clipping off existing ones as needed. function adjustView(cm, from, to) { var display = cm.display, view = display.view; if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { display.view = buildViewArray(cm, from, to); display.viewFrom = from; } else { if (display.viewFrom > from) { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); } else if (display.viewFrom < from) { display.view = display.view.slice(findViewIndex(cm, from)); } display.viewFrom = from; if (display.viewTo < to) { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); } else if (display.viewTo > to) { display.view = display.view.slice(0, findViewIndex(cm, to)); } } display.viewTo = to; } // Count the number of lines in the view whose DOM representation is // out of date (or nonexistent). function countDirtyView(cm) { var view = cm.display.view, dirty = 0; for (var i = 0; i < view.length; i++) { var lineView = view[i]; if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; } } return dirty } function updateSelection(cm) { cm.display.input.showSelection(cm.display.input.prepareSelection()); } function prepareSelection(cm, primary) { if ( primary === void 0 ) primary = true; var doc = cm.doc, result = {}; var curFragment = result.cursors = document.createDocumentFragment(); var selFragment = result.selection = document.createDocumentFragment(); var customCursor = cm.options.$customCursor; if (customCursor) { primary = true; } for (var i = 0; i < doc.sel.ranges.length; i++) { if (!primary && i == doc.sel.primIndex) { continue } var range = doc.sel.ranges[i]; if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue } var collapsed = range.empty(); if (customCursor) { var head = customCursor(cm, range); if (head) { drawSelectionCursor(cm, head, curFragment); } } else if (collapsed || cm.options.showCursorWhenSelecting) { drawSelectionCursor(cm, range.head, curFragment); } if (!collapsed) { drawSelectionRange(cm, range, selFragment); } } return result } // Draws a cursor for the given range function drawSelectionCursor(cm, head, output) { var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine); var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")); cursor.style.left = pos.left + "px"; cursor.style.top = pos.top + "px"; cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; if (/\bcm-fat-cursor\b/.test(cm.getWrapperElement().className)) { var charPos = charCoords(cm, head, "div", null, null); var width = charPos.right - charPos.left; cursor.style.width = (width > 0 ? width : cm.defaultCharWidth()) + "px"; } if (pos.other) { // Secondary cursor, shown when on a 'jump' in bi-directional text var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")); otherCursor.style.display = ""; otherCursor.style.left = pos.other.left + "px"; otherCursor.style.top = pos.other.top + "px"; otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; } } function cmpCoords(a, b) { return a.top - b.top || a.left - b.left } // Draws the given range as a highlighted selection function drawSelectionRange(cm, range, output) { var display = cm.display, doc = cm.doc; var fragment = document.createDocumentFragment(); var padding = paddingH(cm.display), leftSide = padding.left; var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right; var docLTR = doc.direction == "ltr"; function add(left, top, width, bottom) { if (top < 0) { top = 0; } top = Math.round(top); bottom = Math.round(bottom); fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n height: " + (bottom - top) + "px"))); } function drawForLine(line, fromArg, toArg) { var lineObj = getLine(doc, line); var lineLen = lineObj.text.length; var start, end; function coords(ch, bias) { return charCoords(cm, Pos(line, ch), "div", lineObj, bias) } function wrapX(pos, dir, side) { var extent = wrappedLineExtentChar(cm, lineObj, null, pos); var prop = (dir == "ltr") == (side == "after") ? "left" : "right"; var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1); return coords(ch, prop)[prop] } var order = getOrder(lineObj, doc.direction); iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) { var ltr = dir == "ltr"; var fromPos = coords(from, ltr ? "left" : "right"); var toPos = coords(to - 1, ltr ? "right" : "left"); var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen; var first = i == 0, last = !order || i == order.length - 1; if (toPos.top - fromPos.top <= 3) { // Single line var openLeft = (docLTR ? openStart : openEnd) && first; var openRight = (docLTR ? openEnd : openStart) && last; var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left; var right = openRight ? rightSide : (ltr ? toPos : fromPos).right; add(left, fromPos.top, right - left, fromPos.bottom); } else { // Multiple lines var topLeft, topRight, botLeft, botRight; if (ltr) { topLeft = docLTR && openStart && first ? leftSide : fromPos.left; topRight = docLTR ? rightSide : wrapX(from, dir, "before"); botLeft = docLTR ? leftSide : wrapX(to, dir, "after"); botRight = docLTR && openEnd && last ? rightSide : toPos.right; } else { topLeft = !docLTR ? leftSide : wrapX(from, dir, "before"); topRight = !docLTR && openStart && first ? rightSide : fromPos.right; botLeft = !docLTR && openEnd && last ? leftSide : toPos.left; botRight = !docLTR ? rightSide : wrapX(to, dir, "after"); } add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom); if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); } add(botLeft, toPos.top, botRight - botLeft, toPos.bottom); } if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; } if (cmpCoords(toPos, start) < 0) { start = toPos; } if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; } if (cmpCoords(toPos, end) < 0) { end = toPos; } }); return {start: start, end: end} } var sFrom = range.from(), sTo = range.to(); if (sFrom.line == sTo.line) { drawForLine(sFrom.line, sFrom.ch, sTo.ch); } else { var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line); var singleVLine = visualLine(fromLine) == visualLine(toLine); var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end; var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start; if (singleVLine) { if (leftEnd.top < rightStart.top - 2) { add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); add(leftSide, rightStart.top, rightStart.left, rightStart.bottom); } else { add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); } } if (leftEnd.bottom < rightStart.top) { add(leftSide, leftEnd.bottom, null, rightStart.top); } } output.appendChild(fragment); } // Cursor-blinking function restartBlink(cm) { if (!cm.state.focused) { return } var display = cm.display; clearInterval(display.blinker); var on = true; display.cursorDiv.style.visibility = ""; if (cm.options.cursorBlinkRate > 0) { display.blinker = setInterval(function () { if (!cm.hasFocus()) { onBlur(cm); } display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; }, cm.options.cursorBlinkRate); } else if (cm.options.cursorBlinkRate < 0) { display.cursorDiv.style.visibility = "hidden"; } } function ensureFocus(cm) { if (!cm.hasFocus()) { cm.display.input.focus(); if (!cm.state.focused) { onFocus(cm); } } } function delayBlurEvent(cm) { cm.state.delayingBlurEvent = true; setTimeout(function () { if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false; if (cm.state.focused) { onBlur(cm); } } }, 100); } function onFocus(cm, e) { if (cm.state.delayingBlurEvent && !cm.state.draggingText) { cm.state.delayingBlurEvent = false; } if (cm.options.readOnly == "nocursor") { return } if (!cm.state.focused) { signal(cm, "focus", cm, e); cm.state.focused = true; addClass(cm.display.wrapper, "CodeMirror-focused"); // This test prevents this from firing when a context // menu is closed (since the input reset would kill the // select-all detection hack) if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { cm.display.input.reset(); if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730 } cm.display.input.receivedFocus(); } restartBlink(cm); } function onBlur(cm, e) { if (cm.state.delayingBlurEvent) { return } if (cm.state.focused) { signal(cm, "blur", cm, e); cm.state.focused = false; rmClass(cm.display.wrapper, "CodeMirror-focused"); } clearInterval(cm.display.blinker); setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150); } // Read the actual heights of the rendered lines, and update their // stored heights to match. function updateHeightsInViewport(cm) { var display = cm.display; var prevBottom = display.lineDiv.offsetTop; var viewTop = Math.max(0, display.scroller.getBoundingClientRect().top); var oldHeight = display.lineDiv.getBoundingClientRect().top; var mustScroll = 0; for (var i = 0; i < display.view.length; i++) { var cur = display.view[i], wrapping = cm.options.lineWrapping; var height = (void 0), width = 0; if (cur.hidden) { continue } oldHeight += cur.line.height; if (ie && ie_version < 8) { var bot = cur.node.offsetTop + cur.node.offsetHeight; height = bot - prevBottom; prevBottom = bot; } else { var box = cur.node.getBoundingClientRect(); height = box.bottom - box.top; // Check that lines don't extend past the right of the current // editor width if (!wrapping && cur.text.firstChild) { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; } } var diff = cur.line.height - height; if (diff > .005 || diff < -.005) { if (oldHeight < viewTop) { mustScroll -= diff; } updateLineHeight(cur.line, height); updateWidgetHeight(cur.line); if (cur.rest) { for (var j = 0; j < cur.rest.length; j++) { updateWidgetHeight(cur.rest[j]); } } } if (width > cm.display.sizerWidth) { var chWidth = Math.ceil(width / charWidth(cm.display)); if (chWidth > cm.display.maxLineLength) { cm.display.maxLineLength = chWidth; cm.display.maxLine = cur.line; cm.display.maxLineChanged = true; } } } if (Math.abs(mustScroll) > 2) { display.scroller.scrollTop += mustScroll; } } // Read and store the height of line widgets associated with the // given line. function updateWidgetHeight(line) { if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) { var w = line.widgets[i], parent = w.node.parentNode; if (parent) { w.height = parent.offsetHeight; } } } } // Compute the lines that are visible in a given viewport (defaults // the the current scroll position). viewport may contain top, // height, and ensure (see op.scrollToPos) properties. function visibleLines(display, doc, viewport) { var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop; top = Math.floor(top - paddingTop(display)); var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight; var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom); // Ensure is a {from: {line, ch}, to: {line, ch}} object, and // forces those lines into the viewport (if possible). if (viewport && viewport.ensure) { var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line; if (ensureFrom < from) { from = ensureFrom; to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight); } else if (Math.min(ensureTo, doc.lastLine()) >= to) { from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight); to = ensureTo; } } return {from: from, to: Math.max(to, from + 1)} } // SCROLLING THINGS INTO VIEW // If an editor sits on the top or bottom of the window, partially // scrolled out of view, this ensures that the cursor is visible. function maybeScrollWindow(cm, rect) { if (signalDOMEvent(cm, "scrollCursorIntoView")) { return } var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; if (rect.top + box.top < 0) { doScroll = true; } else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false; } if (doScroll != null && !phantom) { var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;")); cm.display.lineSpace.appendChild(scrollNode); scrollNode.scrollIntoView(doScroll); cm.display.lineSpace.removeChild(scrollNode); } } // Scroll a given position into view (immediately), verifying that // it actually became visible (as line heights are accurately // measured, the position of something may 'drift' during drawing). function scrollPosIntoView(cm, pos, end, margin) { if (margin == null) { margin = 0; } var rect; if (!cm.options.lineWrapping && pos == end) { // Set pos and end to the cursor positions around the character pos sticks to // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch // If pos == Pos(_, 0, "before"), pos and end are unchanged end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos; pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos; } for (var limit = 0; limit < 5; limit++) { var changed = false; var coords = cursorCoords(cm, pos); var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); rect = {left: Math.min(coords.left, endCoords.left), top: Math.min(coords.top, endCoords.top) - margin, right: Math.max(coords.left, endCoords.left), bottom: Math.max(coords.bottom, endCoords.bottom) + margin}; var scrollPos = calculateScrollPos(cm, rect); var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; } } if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; } } if (!changed) { break } } return rect } // Scroll a given set of coordinates into view (immediately). function scrollIntoView(cm, rect) { var scrollPos = calculateScrollPos(cm, rect); if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); } if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); } } // Calculate a new scroll position needed to scroll the given // rectangle into view. Returns an object with scrollTop and // scrollLeft properties. When these are undefined, the // vertical/horizontal position does not need to be adjusted. function calculateScrollPos(cm, rect) { var display = cm.display, snapMargin = textHeight(cm.display); if (rect.top < 0) { rect.top = 0; } var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop; var screen = displayHeight(cm), result = {}; if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; } var docBottom = cm.doc.height + paddingVert(display); var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin; if (rect.top < screentop) { result.scrollTop = atTop ? 0 : rect.top; } else if (rect.bottom > screentop + screen) { var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen); if (newTop != screentop) { result.scrollTop = newTop; } } var gutterSpace = cm.options.fixedGutter ? 0 : display.gutters.offsetWidth; var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft - gutterSpace; var screenw = displayWidth(cm) - display.gutters.offsetWidth; var tooWide = rect.right - rect.left > screenw; if (tooWide) { rect.right = rect.left + screenw; } if (rect.left < 10) { result.scrollLeft = 0; } else if (rect.left < screenleft) { result.scrollLeft = Math.max(0, rect.left + gutterSpace - (tooWide ? 0 : 10)); } else if (rect.right > screenw + screenleft - 3) { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; } return result } // Store a relative adjustment to the scroll position in the current // operation (to be applied when the operation finishes). function addToScrollTop(cm, top) { if (top == null) { return } resolveScrollToPos(cm); cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top; } // Make sure that at the end of the operation the current cursor is // shown. function ensureCursorVisible(cm) { resolveScrollToPos(cm); var cur = cm.getCursor(); cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin}; } function scrollToCoords(cm, x, y) { if (x != null || y != null) { resolveScrollToPos(cm); } if (x != null) { cm.curOp.scrollLeft = x; } if (y != null) { cm.curOp.scrollTop = y; } } function scrollToRange(cm, range) { resolveScrollToPos(cm); cm.curOp.scrollToPos = range; } // When an operation has its scrollToPos property set, and another // scroll action is applied before the end of the operation, this // 'simulates' scrolling that position into view in a cheap way, so // that the effect of intermediate scroll commands is not ignored. function resolveScrollToPos(cm) { var range = cm.curOp.scrollToPos; if (range) { cm.curOp.scrollToPos = null; var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to); scrollToCoordsRange(cm, from, to, range.margin); } } function scrollToCoordsRange(cm, from, to, margin) { var sPos = calculateScrollPos(cm, { left: Math.min(from.left, to.left), top: Math.min(from.top, to.top) - margin, right: Math.max(from.right, to.right), bottom: Math.max(from.bottom, to.bottom) + margin }); scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop); } // Sync the scrollable area and scrollbars, ensure the viewport // covers the visible area. function updateScrollTop(cm, val) { if (Math.abs(cm.doc.scrollTop - val) < 2) { return } if (!gecko) { updateDisplaySimple(cm, {top: val}); } setScrollTop(cm, val, true); if (gecko) { updateDisplaySimple(cm); } startWorker(cm, 100); } function setScrollTop(cm, val, forceScroll) { val = Math.max(0, Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val)); if (cm.display.scroller.scrollTop == val && !forceScroll) { return } cm.doc.scrollTop = val; cm.display.scrollbars.setScrollTop(val); if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; } } // Sync scroller and scrollbar, ensure the gutter elements are // aligned. function setScrollLeft(cm, val, isScroller, forceScroll) { val = Math.max(0, Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth)); if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return } cm.doc.scrollLeft = val; alignHorizontally(cm); if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; } cm.display.scrollbars.setScrollLeft(val); } // SCROLLBARS // Prepare DOM reads needed to update the scrollbars. Done in one // shot to minimize update/measure roundtrips. function measureForScrollbars(cm) { var d = cm.display, gutterW = d.gutters.offsetWidth; var docH = Math.round(cm.doc.height + paddingVert(cm.display)); return { clientHeight: d.scroller.clientHeight, viewHeight: d.wrapper.clientHeight, scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, viewWidth: d.wrapper.clientWidth, barLeft: cm.options.fixedGutter ? gutterW : 0, docHeight: docH, scrollHeight: docH + scrollGap(cm) + d.barHeight, nativeBarWidth: d.nativeBarWidth, gutterWidth: gutterW } } var NativeScrollbars = function(place, scroll, cm) { this.cm = cm; var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar"); var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar"); vert.tabIndex = horiz.tabIndex = -1; place(vert); place(horiz); on(vert, "scroll", function () { if (vert.clientHeight) { scroll(vert.scrollTop, "vertical"); } }); on(horiz, "scroll", function () { if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal"); } }); this.checkedZeroWidth = false; // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; } }; NativeScrollbars.prototype.update = function (measure) { var needsH = measure.scrollWidth > measure.clientWidth + 1; var needsV = measure.scrollHeight > measure.clientHeight + 1; var sWidth = measure.nativeBarWidth; if (needsV) { this.vert.style.display = "block"; this.vert.style.bottom = needsH ? sWidth + "px" : "0"; var totalHeight = measure.viewHeight - (needsH ? sWidth : 0); // A bug in IE8 can cause this value to be negative, so guard it. this.vert.firstChild.style.height = Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"; } else { this.vert.scrollTop = 0; this.vert.style.display = ""; this.vert.firstChild.style.height = "0"; } if (needsH) { this.horiz.style.display = "block"; this.horiz.style.right = needsV ? sWidth + "px" : "0"; this.horiz.style.left = measure.barLeft + "px"; var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0); this.horiz.firstChild.style.width = Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px"; } else { this.horiz.style.display = ""; this.horiz.firstChild.style.width = "0"; } if (!this.checkedZeroWidth && measure.clientHeight > 0) { if (sWidth == 0) { this.zeroWidthHack(); } this.checkedZeroWidth = true; } return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0} }; NativeScrollbars.prototype.setScrollLeft = function (pos) { if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; } if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz"); } }; NativeScrollbars.prototype.setScrollTop = function (pos) { if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; } if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert"); } }; NativeScrollbars.prototype.zeroWidthHack = function () { var w = mac && !mac_geMountainLion ? "12px" : "18px"; this.horiz.style.height = this.vert.style.width = w; this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none"; this.disableHoriz = new Delayed; this.disableVert = new Delayed; }; NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) { bar.style.pointerEvents = "auto"; function maybeDisable() { // To find out whether the scrollbar is still visible, we // check whether the element under the pixel in the bottom // right corner of the scrollbar box is the scrollbar box // itself (when the bar is still visible) or its filler child // (when the bar is hidden). If it is still visible, we keep // it enabled, if it's hidden, we disable pointer events. var box = bar.getBoundingClientRect(); var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2) : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1); if (elt != bar) { bar.style.pointerEvents = "none"; } else { delay.set(1000, maybeDisable); } } delay.set(1000, maybeDisable); }; NativeScrollbars.prototype.clear = function () { var parent = this.horiz.parentNode; parent.removeChild(this.horiz); parent.removeChild(this.vert); }; var NullScrollbars = function () {}; NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} }; NullScrollbars.prototype.setScrollLeft = function () {}; NullScrollbars.prototype.setScrollTop = function () {}; NullScrollbars.prototype.clear = function () {}; function updateScrollbars(cm, measure) { if (!measure) { measure = measureForScrollbars(cm); } var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight; updateScrollbarsInner(cm, measure); for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { if (startWidth != cm.display.barWidth && cm.options.lineWrapping) { updateHeightsInViewport(cm); } updateScrollbarsInner(cm, measureForScrollbars(cm)); startWidth = cm.display.barWidth; startHeight = cm.display.barHeight; } } // Re-synchronize the fake scrollbars with the actual size of the // content. function updateScrollbarsInner(cm, measure) { var d = cm.display; var sizes = d.scrollbars.update(measure); d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"; d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"; d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent"; if (sizes.right && sizes.bottom) { d.scrollbarFiller.style.display = "block"; d.scrollbarFiller.style.height = sizes.bottom + "px"; d.scrollbarFiller.style.width = sizes.right + "px"; } else { d.scrollbarFiller.style.display = ""; } if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { d.gutterFiller.style.display = "block"; d.gutterFiller.style.height = sizes.bottom + "px"; d.gutterFiller.style.width = measure.gutterWidth + "px"; } else { d.gutterFiller.style.display = ""; } } var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}; function initScrollbars(cm) { if (cm.display.scrollbars) { cm.display.scrollbars.clear(); if (cm.display.scrollbars.addClass) { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); } } cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) { cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller); // Prevent clicks in the scrollbars from killing focus on(node, "mousedown", function () { if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); } }); node.setAttribute("cm-not-content", "true"); }, function (pos, axis) { if (axis == "horizontal") { setScrollLeft(cm, pos); } else { updateScrollTop(cm, pos); } }, cm); if (cm.display.scrollbars.addClass) { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); } } // Operations are used to wrap a series of changes to the editor // state in such a way that each change won't have to update the // cursor and display (which would be awkward, slow, and // error-prone). Instead, display updates are batched and then all // combined and executed at once. var nextOpId = 0; // Start a new operation. function startOperation(cm) { cm.curOp = { cm: cm, viewChanged: false, // Flag that indicates that lines might need to be redrawn startHeight: cm.doc.height, // Used to detect need to update scrollbar forceUpdate: false, // Used to force a redraw updateInput: 0, // Whether to reset the input textarea typing: false, // Whether this reset should be careful to leave existing text (for compositing) changeObjs: null, // Accumulated changes, for firing change events cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already selectionChanged: false, // Whether the selection needs to be redrawn updateMaxLine: false, // Set when the widest line needs to be determined anew scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet scrollToPos: null, // Used to scroll to a specific position focus: false, id: ++nextOpId, // Unique ID markArrays: null // Used by addMarkedSpan }; pushOperation(cm.curOp); } // Finish an operation, updating the display and signalling delayed events function endOperation(cm) { var op = cm.curOp; if (op) { finishOperation(op, function (group) { for (var i = 0; i < group.ops.length; i++) { group.ops[i].cm.curOp = null; } endOperations(group); }); } } // The DOM updates done when an operation finishes are batched so // that the minimum number of relayouts are required. function endOperations(group) { var ops = group.ops; for (var i = 0; i < ops.length; i++) // Read DOM { endOperation_R1(ops[i]); } for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe) { endOperation_W1(ops[i$1]); } for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM { endOperation_R2(ops[i$2]); } for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe) { endOperation_W2(ops[i$3]); } for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM { endOperation_finish(ops[i$4]); } } function endOperation_R1(op) { var cm = op.cm, display = cm.display; maybeClipScrollbars(cm); if (op.updateMaxLine) { findMaxLine(cm); } op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || op.scrollToPos.to.line >= display.viewTo) || display.maxLineChanged && cm.options.lineWrapping; op.update = op.mustUpdate && new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate); } function endOperation_W1(op) { op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update); } function endOperation_R2(op) { var cm = op.cm, display = cm.display; if (op.updatedDisplay) { updateHeightsInViewport(cm); } op.barMeasure = measureForScrollbars(cm); // If the max line changed since it was last measured, measure it, // and ensure the document's width matches it. // updateDisplay_W2 will use these properties to do the actual resizing if (display.maxLineChanged && !cm.options.lineWrapping) { op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3; cm.display.sizerWidth = op.adjustWidthTo; op.barMeasure.scrollWidth = Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth); op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)); } if (op.updatedDisplay || op.selectionChanged) { op.preparedSelection = display.input.prepareSelection(); } } function endOperation_W2(op) { var cm = op.cm; if (op.adjustWidthTo != null) { cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"; if (op.maxScrollLeft < cm.doc.scrollLeft) { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); } cm.display.maxLineChanged = false; } var takeFocus = op.focus && op.focus == activeElt(); if (op.preparedSelection) { cm.display.input.showSelection(op.preparedSelection, takeFocus); } if (op.updatedDisplay || op.startHeight != cm.doc.height) { updateScrollbars(cm, op.barMeasure); } if (op.updatedDisplay) { setDocumentHeight(cm, op.barMeasure); } if (op.selectionChanged) { restartBlink(cm); } if (cm.state.focused && op.updateInput) { cm.display.input.reset(op.typing); } if (takeFocus) { ensureFocus(op.cm); } } function endOperation_finish(op) { var cm = op.cm, display = cm.display, doc = cm.doc; if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); } // Abort mouse wheel delta measurement, when scrolling explicitly if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) { display.wheelStartX = display.wheelStartY = null; } // Propagate the scroll position to the actual DOM scroller if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); } if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); } // If we need to scroll a specific position into view, do so. if (op.scrollToPos) { var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin); maybeScrollWindow(cm, rect); } // Fire events for markers that are hidden/unidden by editing or // undoing var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; if (hidden) { for (var i = 0; i < hidden.length; ++i) { if (!hidden[i].lines.length) { signal(hidden[i], "hide"); } } } if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1) { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide"); } } } if (display.wrapper.offsetHeight) { doc.scrollTop = cm.display.scroller.scrollTop; } // Fire change events, and delayed event handlers if (op.changeObjs) { signal(cm, "changes", cm, op.changeObjs); } if (op.update) { op.update.finish(); } } // Run the given function in an operation function runInOp(cm, f) { if (cm.curOp) { return f() } startOperation(cm); try { return f() } finally { endOperation(cm); } } // Wraps a function in an operation. Returns the wrapped function. function operation(cm, f) { return function() { if (cm.curOp) { return f.apply(cm, arguments) } startOperation(cm); try { return f.apply(cm, arguments) } finally { endOperation(cm); } } } // Used to add methods to editor and doc instances, wrapping them in // operations. function methodOp(f) { return function() { if (this.curOp) { return f.apply(this, arguments) } startOperation(this); try { return f.apply(this, arguments) } finally { endOperation(this); } } } function docMethodOp(f) { return function() { var cm = this.cm; if (!cm || cm.curOp) { return f.apply(this, arguments) } startOperation(cm); try { return f.apply(this, arguments) } finally { endOperation(cm); } } } // HIGHLIGHT WORKER function startWorker(cm, time) { if (cm.doc.highlightFrontier < cm.display.viewTo) { cm.state.highlight.set(time, bind(highlightWorker, cm)); } } function highlightWorker(cm) { var doc = cm.doc; if (doc.highlightFrontier >= cm.display.viewTo) { return } var end = +new Date + cm.options.workTime; var context = getContextBefore(cm, doc.highlightFrontier); var changedLines = []; doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) { if (context.line >= cm.display.viewFrom) { // Visible var oldStyles = line.styles; var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null; var highlighted = highlightLine(cm, line, context, true); if (resetState) { context.state = resetState; } line.styles = highlighted.styles; var oldCls = line.styleClasses, newCls = highlighted.classes; if (newCls) { line.styleClasses = newCls; } else if (oldCls) { line.styleClasses = null; } var ischange = !oldStyles || oldStyles.length != line.styles.length || oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass); for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; } if (ischange) { changedLines.push(context.line); } line.stateAfter = context.save(); context.nextLine(); } else { if (line.text.length <= cm.options.maxHighlightLength) { processLine(cm, line.text, context); } line.stateAfter = context.line % 5 == 0 ? context.save() : null; context.nextLine(); } if (+new Date > end) { startWorker(cm, cm.options.workDelay); return true } }); doc.highlightFrontier = context.line; doc.modeFrontier = Math.max(doc.modeFrontier, context.line); if (changedLines.length) { runInOp(cm, function () { for (var i = 0; i < changedLines.length; i++) { regLineChange(cm, changedLines[i], "text"); } }); } } // DISPLAY DRAWING var DisplayUpdate = function(cm, viewport, force) { var display = cm.display; this.viewport = viewport; // Store some values that we'll need later (but don't want to force a relayout for) this.visible = visibleLines(display, cm.doc, viewport); this.editorIsHidden = !display.wrapper.offsetWidth; this.wrapperHeight = display.wrapper.clientHeight; this.wrapperWidth = display.wrapper.clientWidth; this.oldDisplayWidth = displayWidth(cm); this.force = force; this.dims = getDimensions(cm); this.events = []; }; DisplayUpdate.prototype.signal = function (emitter, type) { if (hasHandler(emitter, type)) { this.events.push(arguments); } }; DisplayUpdate.prototype.finish = function () { for (var i = 0; i < this.events.length; i++) { signal.apply(null, this.events[i]); } }; function maybeClipScrollbars(cm) { var display = cm.display; if (!display.scrollbarsClipped && display.scroller.offsetWidth) { display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth; display.heightForcer.style.height = scrollGap(cm) + "px"; display.sizer.style.marginBottom = -display.nativeBarWidth + "px"; display.sizer.style.borderRightWidth = scrollGap(cm) + "px"; display.scrollbarsClipped = true; } } function selectionSnapshot(cm) { if (cm.hasFocus()) { return null } var active = activeElt(); if (!active || !contains(cm.display.lineDiv, active)) { return null } var result = {activeElt: active}; if (window.getSelection) { var sel = window.getSelection(); if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) { result.anchorNode = sel.anchorNode; result.anchorOffset = sel.anchorOffset; result.focusNode = sel.focusNode; result.focusOffset = sel.focusOffset; } } return result } function restoreSelection(snapshot) { if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return } snapshot.activeElt.focus(); if (!/^(INPUT|TEXTAREA)$/.test(snapshot.activeElt.nodeName) && snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) { var sel = window.getSelection(), range = document.createRange(); range.setEnd(snapshot.anchorNode, snapshot.anchorOffset); range.collapse(false); sel.removeAllRanges(); sel.addRange(range); sel.extend(snapshot.focusNode, snapshot.focusOffset); } } // Does the actual updating of the line display. Bails out // (returning false) when there is nothing to be done and forced is // false. function updateDisplayIfNeeded(cm, update) { var display = cm.display, doc = cm.doc; if (update.editorIsHidden) { resetView(cm); return false } // Bail out if the visible area is already rendered and nothing changed. if (!update.force && update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && display.renderedView == display.view && countDirtyView(cm) == 0) { return false } if (maybeUpdateLineNumberWidth(cm)) { resetView(cm); update.dims = getDimensions(cm); } // Compute a suitable new viewport (from & to) var end = doc.first + doc.size; var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first); var to = Math.min(end, update.visible.to + cm.options.viewportMargin); if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); } if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); } if (sawCollapsedSpans) { from = visualLineNo(cm.doc, from); to = visualLineEndNo(cm.doc, to); } var different = from != display.viewFrom || to != display.viewTo || display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth; adjustView(cm, from, to); display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)); // Position the mover div to align with the current scroll position cm.display.mover.style.top = display.viewOffset + "px"; var toUpdate = countDirtyView(cm); if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) { return false } // For big changes, we hide the enclosing element during the // update, since that speeds up the operations on most browsers. var selSnapshot = selectionSnapshot(cm); if (toUpdate > 4) { display.lineDiv.style.display = "none"; } patchDisplay(cm, display.updateLineNumbers, update.dims); if (toUpdate > 4) { display.lineDiv.style.display = ""; } display.renderedView = display.view; // There might have been a widget with a focused element that got // hidden or updated, if so re-focus it. restoreSelection(selSnapshot); // Prevent selection and cursors from interfering with the scroll // width and height. removeChildren(display.cursorDiv); removeChildren(display.selectionDiv); display.gutters.style.height = display.sizer.style.minHeight = 0; if (different) { display.lastWrapHeight = update.wrapperHeight; display.lastWrapWidth = update.wrapperWidth; startWorker(cm, 400); } display.updateLineNumbers = null; return true } function postUpdateDisplay(cm, update) { var viewport = update.viewport; for (var first = true;; first = false) { if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) { // Clip forced viewport to actual scrollable area. if (viewport && viewport.top != null) { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; } // Updated line heights might result in the drawn area not // actually covering the viewport. Keep looping until it does. update.visible = visibleLines(cm.display, cm.doc, viewport); if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) { break } } else if (first) { update.visible = visibleLines(cm.display, cm.doc, viewport); } if (!updateDisplayIfNeeded(cm, update)) { break } updateHeightsInViewport(cm); var barMeasure = measureForScrollbars(cm); updateSelection(cm); updateScrollbars(cm, barMeasure); setDocumentHeight(cm, barMeasure); update.force = false; } update.signal(cm, "update", cm); if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo); cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo; } } function updateDisplaySimple(cm, viewport) { var update = new DisplayUpdate(cm, viewport); if (updateDisplayIfNeeded(cm, update)) { updateHeightsInViewport(cm); postUpdateDisplay(cm, update); var barMeasure = measureForScrollbars(cm); updateSelection(cm); updateScrollbars(cm, barMeasure); setDocumentHeight(cm, barMeasure); update.finish(); } } // Sync the actual display DOM structure with display.view, removing // nodes for lines that are no longer in view, and creating the ones // that are not there yet, and updating the ones that are out of // date. function patchDisplay(cm, updateNumbersFrom, dims) { var display = cm.display, lineNumbers = cm.options.lineNumbers; var container = display.lineDiv, cur = container.firstChild; function rm(node) { var next = node.nextSibling; // Works around a throw-scroll bug in OS X Webkit if (webkit && mac && cm.display.currentWheelTarget == node) { node.style.display = "none"; } else { node.parentNode.removeChild(node); } return next } var view = display.view, lineN = display.viewFrom; // Loop over the elements in the view, syncing cur (the DOM nodes // in display.lineDiv) with the view as we go. for (var i = 0; i < view.length; i++) { var lineView = view[i]; if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet var node = buildLineElement(cm, lineView, lineN, dims); container.insertBefore(node, cur); } else { // Already drawn while (cur != lineView.node) { cur = rm(cur); } var updateNumber = lineNumbers && updateNumbersFrom != null && updateNumbersFrom <= lineN && lineView.lineNumber; if (lineView.changes) { if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false; } updateLineForChanges(cm, lineView, lineN, dims); } if (updateNumber) { removeChildren(lineView.lineNumber); lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))); } cur = lineView.node.nextSibling; } lineN += lineView.size; } while (cur) { cur = rm(cur); } } function updateGutterSpace(display) { var width = display.gutters.offsetWidth; display.sizer.style.marginLeft = width + "px"; // Send an event to consumers responding to changes in gutter width. signalLater(display, "gutterChanged", display); } function setDocumentHeight(cm, measure) { cm.display.sizer.style.minHeight = measure.docHeight + "px"; cm.display.heightForcer.style.top = measure.docHeight + "px"; cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px"; } // Re-align line numbers and gutter marks to compensate for // horizontal scrolling. function alignHorizontally(cm) { var display = cm.display, view = display.view; if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return } var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; var gutterW = display.gutters.offsetWidth, left = comp + "px"; for (var i = 0; i < view.length; i++) { if (!view[i].hidden) { if (cm.options.fixedGutter) { if (view[i].gutter) { view[i].gutter.style.left = left; } if (view[i].gutterBackground) { view[i].gutterBackground.style.left = left; } } var align = view[i].alignable; if (align) { for (var j = 0; j < align.length; j++) { align[j].style.left = left; } } } } if (cm.options.fixedGutter) { display.gutters.style.left = (comp + gutterW) + "px"; } } // Used to ensure that the line number gutter is still the right // size for the current document size. Returns true when an update // is needed. function maybeUpdateLineNumberWidth(cm) { if (!cm.options.lineNumbers) { return false } var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; if (last.length != display.lineNumChars) { var test = display.measure.appendChild(elt("div", [elt("div", last)], "CodeMirror-linenumber CodeMirror-gutter-elt")); var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; display.lineGutter.style.width = ""; display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1; display.lineNumWidth = display.lineNumInnerWidth + padding; display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; display.lineGutter.style.width = display.lineNumWidth + "px"; updateGutterSpace(cm.display); return true } return false } function getGutters(gutters, lineNumbers) { var result = [], sawLineNumbers = false; for (var i = 0; i < gutters.length; i++) { var name = gutters[i], style = null; if (typeof name != "string") { style = name.style; name = name.className; } if (name == "CodeMirror-linenumbers") { if (!lineNumbers) { continue } else { sawLineNumbers = true; } } result.push({className: name, style: style}); } if (lineNumbers && !sawLineNumbers) { result.push({className: "CodeMirror-linenumbers", style: null}); } return result } // Rebuild the gutter elements, ensure the margin to the left of the // code matches their width. function renderGutters(display) { var gutters = display.gutters, specs = display.gutterSpecs; removeChildren(gutters); display.lineGutter = null; for (var i = 0; i < specs.length; ++i) { var ref = specs[i]; var className = ref.className; var style = ref.style; var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + className)); if (style) { gElt.style.cssText = style; } if (className == "CodeMirror-linenumbers") { display.lineGutter = gElt; gElt.style.width = (display.lineNumWidth || 1) + "px"; } } gutters.style.display = specs.length ? "" : "none"; updateGutterSpace(display); } function updateGutters(cm) { renderGutters(cm.display); regChange(cm); alignHorizontally(cm); } // The display handles the DOM integration, both for input reading // and content drawing. It holds references to DOM nodes and // display-related state. function Display(place, doc, input, options) { var d = this; this.input = input; // Covers bottom-right square when both scrollbars are present. d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); d.scrollbarFiller.setAttribute("cm-not-content", "true"); // Covers bottom of gutter when coverGutterNextToScrollbar is on // and h scrollbar is present. d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); d.gutterFiller.setAttribute("cm-not-content", "true"); // Will contain the actual code, positioned to cover the viewport. d.lineDiv = eltP("div", null, "CodeMirror-code"); // Elements are added to these to represent selection and cursors. d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); d.cursorDiv = elt("div", null, "CodeMirror-cursors"); // A visibility: hidden element used to find the size of things. d.measure = elt("div", null, "CodeMirror-measure"); // When lines outside of the viewport are measured, they are drawn in this. d.lineMeasure = elt("div", null, "CodeMirror-measure"); // Wraps everything that needs to exist inside the vertically-padded coordinate system d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], null, "position: relative; outline: none"); var lines = eltP("div", [d.lineSpace], "CodeMirror-lines"); // Moved around its parent to cover visible view. d.mover = elt("div", [lines], null, "position: relative"); // Set to the height of the document, allowing scrolling. d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); d.sizerWidth = null; // Behavior of elts with overflow: auto and padding is // inconsistent across browsers. This is used to ensure the // scrollable area is big enough. d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;"); // Will contain the gutters, if any. d.gutters = elt("div", null, "CodeMirror-gutters"); d.lineGutter = null; // Actual scrollable element. d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); d.scroller.setAttribute("tabIndex", "-1"); // The element in which the editor lives. d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); // This attribute is respected by automatic translation systems such as Google Translate, // and may also be respected by tools used by human translators. d.wrapper.setAttribute('translate', 'no'); // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; } if (place) { if (place.appendChild) { place.appendChild(d.wrapper); } else { place(d.wrapper); } } // Current rendered range (may be bigger than the view window). d.viewFrom = d.viewTo = doc.first; d.reportedViewFrom = d.reportedViewTo = doc.first; // Information about the rendered lines. d.view = []; d.renderedView = null; // Holds info about a single rendered line when it was rendered // for measurement, while not in view. d.externalMeasured = null; // Empty space (in pixels) above the view d.viewOffset = 0; d.lastWrapHeight = d.lastWrapWidth = 0; d.updateLineNumbers = null; d.nativeBarWidth = d.barHeight = d.barWidth = 0; d.scrollbarsClipped = false; // Used to only resize the line number gutter when necessary (when // the amount of lines crosses a boundary that makes its width change) d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; // Set to true when a non-horizontal-scrolling line widget is // added. As an optimization, line widget aligning is skipped when // this is false. d.alignWidgets = false; d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; // Tracks the maximum line length so that the horizontal scrollbar // can be kept static when scrolling. d.maxLine = null; d.maxLineLength = 0; d.maxLineChanged = false; // Used for measuring wheel scrolling granularity d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; // True when shift is held down. d.shift = false; // Used to track whether anything happened since the context menu // was opened. d.selForContextMenu = null; d.activeTouch = null; d.gutterSpecs = getGutters(options.gutters, options.lineNumbers); renderGutters(d); input.init(d); } // Since the delta values reported on mouse wheel events are // unstandardized between browsers and even browser versions, and // generally horribly unpredictable, this code starts by measuring // the scroll effect that the first few mouse wheel events have, // and, from that, detects the way it can convert deltas to pixel // offsets afterwards. // // The reason we want to know the amount a wheel event will scroll // is that it gives us a chance to update the display before the // actual scrolling happens, reducing flickering. var wheelSamples = 0, wheelPixelsPerUnit = null; // Fill in a browser-detected starting value on browsers where we // know one. These don't have to be accurate -- the result of them // being wrong would just be a slight flicker on the first wheel // scroll (if it is large enough). if (ie) { wheelPixelsPerUnit = -.53; } else if (gecko) { wheelPixelsPerUnit = 15; } else if (chrome) { wheelPixelsPerUnit = -.7; } else if (safari) { wheelPixelsPerUnit = -1/3; } function wheelEventDelta(e) { var dx = e.wheelDeltaX, dy = e.wheelDeltaY; if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; } if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; } else if (dy == null) { dy = e.wheelDelta; } return {x: dx, y: dy} } function wheelEventPixels(e) { var delta = wheelEventDelta(e); delta.x *= wheelPixelsPerUnit; delta.y *= wheelPixelsPerUnit; return delta } function onScrollWheel(cm, e) { var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y; var pixelsPerUnit = wheelPixelsPerUnit; if (e.deltaMode === 0) { dx = e.deltaX; dy = e.deltaY; pixelsPerUnit = 1; } var display = cm.display, scroll = display.scroller; // Quit if there's nothing to scroll here var canScrollX = scroll.scrollWidth > scroll.clientWidth; var canScrollY = scroll.scrollHeight > scroll.clientHeight; if (!(dx && canScrollX || dy && canScrollY)) { return } // Webkit browsers on OS X abort momentum scrolls when the target // of the scroll event is removed from the scrollable element. // This hack (see related code in patchDisplay) makes sure the // element is kept around. if (dy && mac && webkit) { outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { for (var i = 0; i < view.length; i++) { if (view[i].node == cur) { cm.display.currentWheelTarget = cur; break outer } } } } // On some browsers, horizontal scrolling will cause redraws to // happen before the gutter has been realigned, causing it to // wriggle around in a most unseemly way. When we have an // estimated pixels/delta value, we just handle horizontal // scrolling entirely here. It'll be slightly off from native, but // better than glitching out. if (dx && !gecko && !presto && pixelsPerUnit != null) { if (dy && canScrollY) { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * pixelsPerUnit)); } setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * pixelsPerUnit)); // Only prevent default scrolling if vertical scrolling is // actually possible. Otherwise, it causes vertical scroll // jitter on OSX trackpads when deltaX is small and deltaY // is large (issue #3579) if (!dy || (dy && canScrollY)) { e_preventDefault(e); } display.wheelStartX = null; // Abort measurement, if in progress return } // 'Project' the visible viewport to cover the area that is being // scrolled into view (if we know enough to estimate it). if (dy && pixelsPerUnit != null) { var pixels = dy * pixelsPerUnit; var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; if (pixels < 0) { top = Math.max(0, top + pixels - 50); } else { bot = Math.min(cm.doc.height, bot + pixels + 50); } updateDisplaySimple(cm, {top: top, bottom: bot}); } if (wheelSamples < 20 && e.deltaMode !== 0) { if (display.wheelStartX == null) { display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; display.wheelDX = dx; display.wheelDY = dy; setTimeout(function () { if (display.wheelStartX == null) { return } var movedX = scroll.scrollLeft - display.wheelStartX; var movedY = scroll.scrollTop - display.wheelStartY; var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || (movedX && display.wheelDX && movedX / display.wheelDX); display.wheelStartX = display.wheelStartY = null; if (!sample) { return } wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); ++wheelSamples; }, 200); } else { display.wheelDX += dx; display.wheelDY += dy; } } } // Selection objects are immutable. A new one is created every time // the selection changes. A selection is one or more non-overlapping // (and non-touching) ranges, sorted, and an integer that indicates // which one is the primary selection (the one that's scrolled into // view, that getCursor returns, etc). var Selection = function(ranges, primIndex) { this.ranges = ranges; this.primIndex = primIndex; }; Selection.prototype.primary = function () { return this.ranges[this.primIndex] }; Selection.prototype.equals = function (other) { if (other == this) { return true } if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false } for (var i = 0; i < this.ranges.length; i++) { var here = this.ranges[i], there = other.ranges[i]; if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false } } return true }; Selection.prototype.deepCopy = function () { var out = []; for (var i = 0; i < this.ranges.length; i++) { out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); } return new Selection(out, this.primIndex) }; Selection.prototype.somethingSelected = function () { for (var i = 0; i < this.ranges.length; i++) { if (!this.ranges[i].empty()) { return true } } return false }; Selection.prototype.contains = function (pos, end) { if (!end) { end = pos; } for (var i = 0; i < this.ranges.length; i++) { var range = this.ranges[i]; if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) { return i } } return -1 }; var Range = function(anchor, head) { this.anchor = anchor; this.head = head; }; Range.prototype.from = function () { return minPos(this.anchor, this.head) }; Range.prototype.to = function () { return maxPos(this.anchor, this.head) }; Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch }; // Take an unsorted, potentially overlapping set of ranges, and // build a selection out of it. 'Consumes' ranges array (modifying // it). function normalizeSelection(cm, ranges, primIndex) { var mayTouch = cm && cm.options.selectionsMayTouch; var prim = ranges[primIndex]; ranges.sort(function (a, b) { return cmp(a.from(), b.from()); }); primIndex = indexOf(ranges, prim); for (var i = 1; i < ranges.length; i++) { var cur = ranges[i], prev = ranges[i - 1]; var diff = cmp(prev.to(), cur.from()); if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) { var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()); var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head; if (i <= primIndex) { --primIndex; } ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)); } } return new Selection(ranges, primIndex) } function simpleSelection(anchor, head) { return new Selection([new Range(anchor, head || anchor)], 0) } // Compute the position of the end of a change (its 'to' property // refers to the pre-change end). function changeEnd(change) { if (!change.text) { return change.to } return Pos(change.from.line + change.text.length - 1, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)) } // Adjust a position to refer to the post-change position of the // same text, or the end of the change if the change covers it. function adjustForChange(pos, change) { if (cmp(pos, change.from) < 0) { return pos } if (cmp(pos, change.to) <= 0) { return changeEnd(change) } var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; } return Pos(line, ch) } function computeSelAfterChange(doc, change) { var out = []; for (var i = 0; i < doc.sel.ranges.length; i++) { var range = doc.sel.ranges[i]; out.push(new Range(adjustForChange(range.anchor, change), adjustForChange(range.head, change))); } return normalizeSelection(doc.cm, out, doc.sel.primIndex) } function offsetPos(pos, old, nw) { if (pos.line == old.line) { return Pos(nw.line, pos.ch - old.ch + nw.ch) } else { return Pos(nw.line + (pos.line - old.line), pos.ch) } } // Used by replaceSelections to allow moving the selection to the // start or around the replaced test. Hint may be "start" or "around". function computeReplacedSel(doc, changes, hint) { var out = []; var oldPrev = Pos(doc.first, 0), newPrev = oldPrev; for (var i = 0; i < changes.length; i++) { var change = changes[i]; var from = offsetPos(change.from, oldPrev, newPrev); var to = offsetPos(changeEnd(change), oldPrev, newPrev); oldPrev = change.to; newPrev = to; if (hint == "around") { var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0; out[i] = new Range(inv ? to : from, inv ? from : to); } else { out[i] = new Range(from, from); } } return new Selection(out, doc.sel.primIndex) } // Used to get the editor into a consistent state again when options change. function loadMode(cm) { cm.doc.mode = getMode(cm.options, cm.doc.modeOption); resetModeState(cm); } function resetModeState(cm) { cm.doc.iter(function (line) { if (line.stateAfter) { line.stateAfter = null; } if (line.styles) { line.styles = null; } }); cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first; startWorker(cm, 100); cm.state.modeGen++; if (cm.curOp) { regChange(cm); } } // DOCUMENT DATA STRUCTURE // By default, updates that start and end at the beginning of a line // are treated specially, in order to make the association of line // widgets and marker elements with the text behave more intuitive. function isWholeLineUpdate(doc, change) { return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && (!doc.cm || doc.cm.options.wholeLineUpdateBefore) } // Perform a change on the document data structure. function updateDoc(doc, change, markedSpans, estimateHeight) { function spansFor(n) {return markedSpans ? markedSpans[n] : null} function update(line, text, spans) { updateLine(line, text, spans, estimateHeight); signalLater(line, "change", line, change); } function linesFor(start, end) { var result = []; for (var i = start; i < end; ++i) { result.push(new Line(text[i], spansFor(i), estimateHeight)); } return result } var from = change.from, to = change.to, text = change.text; var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; // Adjust the line structure if (change.full) { doc.insert(0, linesFor(0, text.length)); doc.remove(text.length, doc.size - text.length); } else if (isWholeLineUpdate(doc, change)) { // This is a whole-line replace. Treated specially to make // sure line objects move the way they are supposed to. var added = linesFor(0, text.length - 1); update(lastLine, lastLine.text, lastSpans); if (nlines) { doc.remove(from.line, nlines); } if (added.length) { doc.insert(from.line, added); } } else if (firstLine == lastLine) { if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); } else { var added$1 = linesFor(1, text.length - 1); added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); doc.insert(from.line + 1, added$1); } } else if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); doc.remove(from.line + 1, nlines); } else { update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); var added$2 = linesFor(1, text.length - 1); if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); } doc.insert(from.line + 1, added$2); } signalLater(doc, "change", doc, change); } // Call f for all linked documents. function linkedDocs(doc, f, sharedHistOnly) { function propagate(doc, skip, sharedHist) { if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) { var rel = doc.linked[i]; if (rel.doc == skip) { continue } var shared = sharedHist && rel.sharedHist; if (sharedHistOnly && !shared) { continue } f(rel.doc, shared); propagate(rel.doc, doc, shared); } } } propagate(doc, null, true); } // Attach a document to an editor. function attachDoc(cm, doc) { if (doc.cm) { throw new Error("This document is already in use.") } cm.doc = doc; doc.cm = cm; estimateLineHeights(cm); loadMode(cm); setDirectionClass(cm); cm.options.direction = doc.direction; if (!cm.options.lineWrapping) { findMaxLine(cm); } cm.options.mode = doc.modeOption; regChange(cm); } function setDirectionClass(cm) { (cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl"); } function directionChanged(cm) { runInOp(cm, function () { setDirectionClass(cm); regChange(cm); }); } function History(prev) { // Arrays of change events and selections. Doing something adds an // event to done and clears undo. Undoing moves events from done // to undone, redoing moves them in the other direction. this.done = []; this.undone = []; this.undoDepth = prev ? prev.undoDepth : Infinity; // Used to track when changes can be merged into a single undo // event this.lastModTime = this.lastSelTime = 0; this.lastOp = this.lastSelOp = null; this.lastOrigin = this.lastSelOrigin = null; // Used by the isClean() method this.generation = this.maxGeneration = prev ? prev.maxGeneration : 1; } // Create a history change event from an updateDoc-style change // object. function historyChangeFromChange(doc, change) { var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true); return histChange } // Pop all selection events off the end of a history array. Stop at // a change event. function clearSelectionEvents(array) { while (array.length) { var last = lst(array); if (last.ranges) { array.pop(); } else { break } } } // Find the top change event in the history. Pop off selection // events that are in the way. function lastChangeEvent(hist, force) { if (force) { clearSelectionEvents(hist.done); return lst(hist.done) } else if (hist.done.length && !lst(hist.done).ranges) { return lst(hist.done) } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { hist.done.pop(); return lst(hist.done) } } // Register a change in the history. Merges changes that are within // a single operation, or are close together with an origin that // allows merging (starting with "+") into a single event. function addChangeToHistory(doc, change, selAfter, opId) { var hist = doc.history; hist.undone.length = 0; var time = +new Date, cur; var last; if ((hist.lastOp == opId || hist.lastOrigin == change.origin && change.origin && ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) || change.origin.charAt(0) == "*")) && (cur = lastChangeEvent(hist, hist.lastOp == opId))) { // Merge this change into the last event last = lst(cur.changes); if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { // Optimized case for simple insertion -- don't want to add // new changesets for every character typed last.to = changeEnd(change); } else { // Add new sub-event cur.changes.push(historyChangeFromChange(doc, change)); } } else { // Can not be merged, start a new event. var before = lst(hist.done); if (!before || !before.ranges) { pushSelectionToHistory(doc.sel, hist.done); } cur = {changes: [historyChangeFromChange(doc, change)], generation: hist.generation}; hist.done.push(cur); while (hist.done.length > hist.undoDepth) { hist.done.shift(); if (!hist.done[0].ranges) { hist.done.shift(); } } } hist.done.push(selAfter); hist.generation = ++hist.maxGeneration; hist.lastModTime = hist.lastSelTime = time; hist.lastOp = hist.lastSelOp = opId; hist.lastOrigin = hist.lastSelOrigin = change.origin; if (!last) { signal(doc, "historyAdded"); } } function selectionEventCanBeMerged(doc, origin, prev, sel) { var ch = origin.charAt(0); return ch == "*" || ch == "+" && prev.ranges.length == sel.ranges.length && prev.somethingSelected() == sel.somethingSelected() && new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500) } // Called whenever the selection changes, sets the new selection as // the pending selection in the history, and pushes the old pending // selection into the 'done' array when it was significantly // different (in number of selected ranges, emptiness, or time). function addSelectionToHistory(doc, sel, opId, options) { var hist = doc.history, origin = options && options.origin; // A new event is started when the previous origin does not match // the current, or the origins don't allow matching. Origins // starting with * are always merged, those starting with + are // merged when similar and close together in time. if (opId == hist.lastSelOp || (origin && hist.lastSelOrigin == origin && (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) { hist.done[hist.done.length - 1] = sel; } else { pushSelectionToHistory(sel, hist.done); } hist.lastSelTime = +new Date; hist.lastSelOrigin = origin; hist.lastSelOp = opId; if (options && options.clearRedo !== false) { clearSelectionEvents(hist.undone); } } function pushSelectionToHistory(sel, dest) { var top = lst(dest); if (!(top && top.ranges && top.equals(sel))) { dest.push(sel); } } // Used to store marked span information in the history. function attachLocalSpans(doc, change, from, to) { var existing = change["spans_" + doc.id], n = 0; doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) { if (line.markedSpans) { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; } ++n; }); } // When un/re-doing restores text containing marked spans, those // that have been explicitly cleared should not be restored. function removeClearedSpans(spans) { if (!spans) { return null } var out; for (var i = 0; i < spans.length; ++i) { if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } } else if (out) { out.push(spans[i]); } } return !out ? spans : out.length ? out : null } // Retrieve and filter the old marked spans stored in a change event. function getOldSpans(doc, change) { var found = change["spans_" + doc.id]; if (!found) { return null } var nw = []; for (var i = 0; i < change.text.length; ++i) { nw.push(removeClearedSpans(found[i])); } return nw } // Used for un/re-doing changes from the history. Combines the // result of computing the existing spans with the set of spans that // existed in the history (so that deleting around a span and then // undoing brings back the span). function mergeOldSpans(doc, change) { var old = getOldSpans(doc, change); var stretched = stretchSpansOverChange(doc, change); if (!old) { return stretched } if (!stretched) { return old } for (var i = 0; i < old.length; ++i) { var oldCur = old[i], stretchCur = stretched[i]; if (oldCur && stretchCur) { spans: for (var j = 0; j < stretchCur.length; ++j) { var span = stretchCur[j]; for (var k = 0; k < oldCur.length; ++k) { if (oldCur[k].marker == span.marker) { continue spans } } oldCur.push(span); } } else if (stretchCur) { old[i] = stretchCur; } } return old } // Used both to provide a JSON-safe object in .getHistory, and, when // detaching a document, to split the history in two function copyHistoryArray(events, newGroup, instantiateSel) { var copy = []; for (var i = 0; i < events.length; ++i) { var event = events[i]; if (event.ranges) { copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event); continue } var changes = event.changes, newChanges = []; copy.push({changes: newChanges}); for (var j = 0; j < changes.length; ++j) { var change = changes[j], m = (void 0); newChanges.push({from: change.from, to: change.to, text: change.text}); if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) { if (indexOf(newGroup, Number(m[1])) > -1) { lst(newChanges)[prop] = change[prop]; delete change[prop]; } } } } } } return copy } // The 'scroll' parameter given to many of these indicated whether // the new cursor position should be scrolled into view after // modifying the selection. // If shift is held or the extend flag is set, extends a range to // include a given position (and optionally a second position). // Otherwise, simply returns the range between the given positions. // Used for cursor motion and such. function extendRange(range, head, other, extend) { if (extend) { var anchor = range.anchor; if (other) { var posBefore = cmp(head, anchor) < 0; if (posBefore != (cmp(other, anchor) < 0)) { anchor = head; head = other; } else if (posBefore != (cmp(head, other) < 0)) { head = other; } } return new Range(anchor, head) } else { return new Range(other || head, head) } } // Extend the primary selection range, discard the rest. function extendSelection(doc, head, other, options, extend) { if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); } setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options); } // Extend all selections (pos is an array of selections with length // equal the number of selections) function extendSelections(doc, heads, options) { var out = []; var extend = doc.cm && (doc.cm.display.shift || doc.extend); for (var i = 0; i < doc.sel.ranges.length; i++) { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); } var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex); setSelection(doc, newSel, options); } // Updates a single range in the selection. function replaceOneSelection(doc, i, range, options) { var ranges = doc.sel.ranges.slice(0); ranges[i] = range; setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options); } // Reset the selection to a single range. function setSimpleSelection(doc, anchor, head, options) { setSelection(doc, simpleSelection(anchor, head), options); } // Give beforeSelectionChange handlers a change to influence a // selection update. function filterSelectionChange(doc, sel, options) { var obj = { ranges: sel.ranges, update: function(ranges) { this.ranges = []; for (var i = 0; i < ranges.length; i++) { this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), clipPos(doc, ranges[i].head)); } }, origin: options && options.origin }; signal(doc, "beforeSelectionChange", doc, obj); if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj); } if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) } else { return sel } } function setSelectionReplaceHistory(doc, sel, options) { var done = doc.history.done, last = lst(done); if (last && last.ranges) { done[done.length - 1] = sel; setSelectionNoUndo(doc, sel, options); } else { setSelection(doc, sel, options); } } // Set a new selection. function setSelection(doc, sel, options) { setSelectionNoUndo(doc, sel, options); addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options); } function setSelectionNoUndo(doc, sel, options) { if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { sel = filterSelectionChange(doc, sel, options); } var bias = options && options.bias || (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1); setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)); if (!(options && options.scroll === false) && doc.cm && doc.cm.getOption("readOnly") != "nocursor") { ensureCursorVisible(doc.cm); } } function setSelectionInner(doc, sel) { if (sel.equals(doc.sel)) { return } doc.sel = sel; if (doc.cm) { doc.cm.curOp.updateInput = 1; doc.cm.curOp.selectionChanged = true; signalCursorActivity(doc.cm); } signalLater(doc, "cursorActivity", doc); } // Verify that the selection does not partially select any atomic // marked ranges. function reCheckSelection(doc) { setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false)); } // Return a selection that does not partially select any atomic // ranges. function skipAtomicInSelection(doc, sel, bias, mayClear) { var out; for (var i = 0; i < sel.ranges.length; i++) { var range = sel.ranges[i]; var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i]; var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear); var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear); if (out || newAnchor != range.anchor || newHead != range.head) { if (!out) { out = sel.ranges.slice(0, i); } out[i] = new Range(newAnchor, newHead); } } return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel } function skipAtomicInner(doc, pos, oldPos, dir, mayClear) { var line = getLine(doc, pos.line); if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { var sp = line.markedSpans[i], m = sp.marker; // Determine if we should prevent the cursor being placed to the left/right of an atomic marker // Historically this was determined using the inclusiveLeft/Right option, but the new way to control it // is with selectLeft/Right var preventCursorLeft = ("selectLeft" in m) ? !m.selectLeft : m.inclusiveLeft; var preventCursorRight = ("selectRight" in m) ? !m.selectRight : m.inclusiveRight; if ((sp.from == null || (preventCursorLeft ? sp.from <= pos.ch : sp.from < pos.ch)) && (sp.to == null || (preventCursorRight ? sp.to >= pos.ch : sp.to > pos.ch))) { if (mayClear) { signal(m, "beforeCursorEnter"); if (m.explicitlyCleared) { if (!line.markedSpans) { break } else {--i; continue} } } if (!m.atomic) { continue } if (oldPos) { var near = m.find(dir < 0 ? 1 : -1), diff = (void 0); if (dir < 0 ? preventCursorRight : preventCursorLeft) { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); } if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) { return skipAtomicInner(doc, near, pos, dir, mayClear) } } var far = m.find(dir < 0 ? -1 : 1); if (dir < 0 ? preventCursorLeft : preventCursorRight) { far = movePos(doc, far, dir, far.line == pos.line ? line : null); } return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null } } } return pos } // Ensure a given position is not inside an atomic range. function skipAtomic(doc, pos, oldPos, bias, mayClear) { var dir = bias || 1; var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) || (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) || skipAtomicInner(doc, pos, oldPos, -dir, mayClear) || (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true)); if (!found) { doc.cantEdit = true; return Pos(doc.first, 0) } return found } function movePos(doc, pos, dir, line) { if (dir < 0 && pos.ch == 0) { if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) } else { return null } } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) { if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) } else { return null } } else { return new Pos(pos.line, pos.ch + dir) } } function selectAll(cm) { cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll); } // UPDATING // Allow "beforeChange" event handlers to influence a change function filterChange(doc, change, update) { var obj = { canceled: false, from: change.from, to: change.to, text: change.text, origin: change.origin, cancel: function () { return obj.canceled = true; } }; if (update) { obj.update = function (from, to, text, origin) { if (from) { obj.from = clipPos(doc, from); } if (to) { obj.to = clipPos(doc, to); } if (text) { obj.text = text; } if (origin !== undefined) { obj.origin = origin; } }; } signal(doc, "beforeChange", doc, obj); if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj); } if (obj.canceled) { if (doc.cm) { doc.cm.curOp.updateInput = 2; } return null } return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin} } // Apply a change to a document, and add it to the document's // history, and propagating it to all linked documents. function makeChange(doc, change, ignoreReadOnly) { if (doc.cm) { if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) } if (doc.cm.state.suppressEdits) { return } } if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { change = filterChange(doc, change, true); if (!change) { return } } // Possibly split or suppress the update based on the presence // of read-only spans in its range. var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); if (split) { for (var i = split.length - 1; i >= 0; --i) { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}); } } else { makeChangeInner(doc, change); } } function makeChangeInner(doc, change) { if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return } var selAfter = computeSelAfterChange(doc, change); addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); var rebased = []; linkedDocs(doc, function (doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change); rebased.push(doc.history); } makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); }); } // Revert a change stored in a document's history. function makeChangeFromHistory(doc, type, allowSelectionOnly) { var suppress = doc.cm && doc.cm.state.suppressEdits; if (suppress && !allowSelectionOnly) { return } var hist = doc.history, event, selAfter = doc.sel; var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done; // Verify that there is a useable event (so that ctrl-z won't // needlessly clear selection events) var i = 0; for (; i < source.length; i++) { event = source[i]; if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) { break } } if (i == source.length) { return } hist.lastOrigin = hist.lastSelOrigin = null; for (;;) { event = source.pop(); if (event.ranges) { pushSelectionToHistory(event, dest); if (allowSelectionOnly && !event.equals(doc.sel)) { setSelection(doc, event, {clearRedo: false}); return } selAfter = event; } else if (suppress) { source.push(event); return } else { break } } // Build up a reverse change object to add to the opposite history // stack (redo when undoing, and vice versa). var antiChanges = []; pushSelectionToHistory(selAfter, dest); dest.push({changes: antiChanges, generation: hist.generation}); hist.generation = event.generation || ++hist.maxGeneration; var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); var loop = function ( i ) { var change = event.changes[i]; change.origin = type; if (filter && !filterChange(doc, change, false)) { source.length = 0; return {} } antiChanges.push(historyChangeFromChange(doc, change)); var after = i ? computeSelAfterChange(doc, change) : lst(source); makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); } var rebased = []; // Propagate to the linked documents linkedDocs(doc, function (doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change); rebased.push(doc.history); } makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); }); }; for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) { var returned = loop( i$1 ); if ( returned ) return returned.v; } } // Sub-views need their line numbers shifted when text is added // above or below them in the parent document. function shiftDoc(doc, distance) { if (distance == 0) { return } doc.first += distance; doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range( Pos(range.anchor.line + distance, range.anchor.ch), Pos(range.head.line + distance, range.head.ch) ); }), doc.sel.primIndex); if (doc.cm) { regChange(doc.cm, doc.first, doc.first - distance, distance); for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) { regLineChange(doc.cm, l, "gutter"); } } } // More lower-level change function, handling only a single document // (not linked ones). function makeChangeSingleDoc(doc, change, selAfter, spans) { if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) } if (change.to.line < doc.first) { shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); return } if (change.from.line > doc.lastLine()) { return } // Clip the change to the size of this doc if (change.from.line < doc.first) { var shift = change.text.length - 1 - (doc.first - change.from.line); shiftDoc(doc, shift); change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), text: [lst(change.text)], origin: change.origin}; } var last = doc.lastLine(); if (change.to.line > last) { change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), text: [change.text[0]], origin: change.origin}; } change.removed = getBetween(doc, change.from, change.to); if (!selAfter) { selAfter = computeSelAfterChange(doc, change); } if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); } else { updateDoc(doc, change, spans); } setSelectionNoUndo(doc, selAfter, sel_dontScroll); if (doc.cantEdit && skipAtomic(doc, Pos(doc.firstLine(), 0))) { doc.cantEdit = false; } } // Handle the interaction of a change to a document with the editor // that this document is part of. function makeChangeSingleDocInEditor(cm, change, spans) { var doc = cm.doc, display = cm.display, from = change.from, to = change.to; var recomputeMaxLength = false, checkWidthStart = from.line; if (!cm.options.lineWrapping) { checkWidthStart = lineNo(visualLine(getLine(doc, from.line))); doc.iter(checkWidthStart, to.line + 1, function (line) { if (line == display.maxLine) { recomputeMaxLength = true; return true } }); } if (doc.sel.contains(change.from, change.to) > -1) { signalCursorActivity(cm); } updateDoc(doc, change, spans, estimateHeight(cm)); if (!cm.options.lineWrapping) { doc.iter(checkWidthStart, from.line + change.text.length, function (line) { var len = lineLength(line); if (len > display.maxLineLength) { display.maxLine = line; display.maxLineLength = len; display.maxLineChanged = true; recomputeMaxLength = false; } }); if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; } } retreatFrontier(doc, from.line); startWorker(cm, 400); var lendiff = change.text.length - (to.line - from.line) - 1; // Remember that these lines changed, for updating the display if (change.full) { regChange(cm); } else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) { regLineChange(cm, from.line, "text"); } else { regChange(cm, from.line, to.line + 1, lendiff); } var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change"); if (changeHandler || changesHandler) { var obj = { from: from, to: to, text: change.text, removed: change.removed, origin: change.origin }; if (changeHandler) { signalLater(cm, "change", cm, obj); } if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); } } cm.display.selForContextMenu = null; } function replaceRange(doc, code, from, to, origin) { var assign; if (!to) { to = from; } if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); } if (typeof code == "string") { code = doc.splitLines(code); } makeChange(doc, {from: from, to: to, text: code, origin: origin}); } // Rebasing/resetting history to deal with externally-sourced changes function rebaseHistSelSingle(pos, from, to, diff) { if (to < pos.line) { pos.line += diff; } else if (from < pos.line) { pos.line = from; pos.ch = 0; } } // Tries to rebase an array of history events given a change in the // document. If the change touches the same lines as the event, the // event, and everything 'behind' it, is discarded. If the change is // before the event, the event's positions are updated. Uses a // copy-on-write scheme for the positions, to avoid having to // reallocate them all on every rebase, but also avoid problems with // shared position objects being unsafely updated. function rebaseHistArray(array, from, to, diff) { for (var i = 0; i < array.length; ++i) { var sub = array[i], ok = true; if (sub.ranges) { if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; } for (var j = 0; j < sub.ranges.length; j++) { rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff); rebaseHistSelSingle(sub.ranges[j].head, from, to, diff); } continue } for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) { var cur = sub.changes[j$1]; if (to < cur.from.line) { cur.from = Pos(cur.from.line + diff, cur.from.ch); cur.to = Pos(cur.to.line + diff, cur.to.ch); } else if (from <= cur.to.line) { ok = false; break } } if (!ok) { array.splice(0, i + 1); i = 0; } } } function rebaseHist(hist, change) { var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; rebaseHistArray(hist.done, from, to, diff); rebaseHistArray(hist.undone, from, to, diff); } // Utility for applying a change to a line by handle or number, // returning the number and optionally registering the line as // changed. function changeLine(doc, handle, changeType, op) { var no = handle, line = handle; if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)); } else { no = lineNo(handle); } if (no == null) { return null } if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); } return line } // The document is represented as a BTree consisting of leaves, with // chunk of lines in them, and branches, with up to ten leaves or // other branch nodes below them. The top node is always a branch // node, and is the document object itself (meaning it has // additional methods and properties). // // All nodes have parent links. The tree is used both to go from // line numbers to line objects, and to go from objects to numbers. // It also indexes by height, and is used to convert between height // and line object, and to find the total height of the document. // // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html function LeafChunk(lines) { this.lines = lines; this.parent = null; var height = 0; for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; height += lines[i].height; } this.height = height; } LeafChunk.prototype = { chunkSize: function() { return this.lines.length }, // Remove the n lines at offset 'at'. removeInner: function(at, n) { for (var i = at, e = at + n; i < e; ++i) { var line = this.lines[i]; this.height -= line.height; cleanUpLine(line); signalLater(line, "delete"); } this.lines.splice(at, n); }, // Helper used to collapse a small branch into a single leaf. collapse: function(lines) { lines.push.apply(lines, this.lines); }, // Insert the given array of lines at offset 'at', count them as // having the given height. insertInner: function(at, lines, height) { this.height += height; this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); for (var i = 0; i < lines.length; ++i) { lines[i].parent = this; } }, // Used to iterate over a part of the tree. iterN: function(at, n, op) { for (var e = at + n; at < e; ++at) { if (op(this.lines[at])) { return true } } } }; function BranchChunk(children) { this.children = children; var size = 0, height = 0; for (var i = 0; i < children.length; ++i) { var ch = children[i]; size += ch.chunkSize(); height += ch.height; ch.parent = this; } this.size = size; this.height = height; this.parent = null; } BranchChunk.prototype = { chunkSize: function() { return this.size }, removeInner: function(at, n) { this.size -= n; for (var i = 0; i < this.children.length; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at < sz) { var rm = Math.min(n, sz - at), oldHeight = child.height; child.removeInner(at, rm); this.height -= oldHeight - child.height; if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } if ((n -= rm) == 0) { break } at = 0; } else { at -= sz; } } // If the result is smaller than 25 lines, ensure that it is a // single leaf node. if (this.size - n < 25 && (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { var lines = []; this.collapse(lines); this.children = [new LeafChunk(lines)]; this.children[0].parent = this; } }, collapse: function(lines) { for (var i = 0; i < this.children.length; ++i) { this.children[i].collapse(lines); } }, insertInner: function(at, lines, height) { this.size += lines.length; this.height += height; for (var i = 0; i < this.children.length; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at <= sz) { child.insertInner(at, lines, height); if (child.lines && child.lines.length > 50) { // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced. // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest. var remaining = child.lines.length % 25 + 25; for (var pos = remaining; pos < child.lines.length;) { var leaf = new LeafChunk(child.lines.slice(pos, pos += 25)); child.height -= leaf.height; this.children.splice(++i, 0, leaf); leaf.parent = this; } child.lines = child.lines.slice(0, remaining); this.maybeSpill(); } break } at -= sz; } }, // When a node has grown, check whether it should be split. maybeSpill: function() { if (this.children.length <= 10) { return } var me = this; do { var spilled = me.children.splice(me.children.length - 5, 5); var sibling = new BranchChunk(spilled); if (!me.parent) { // Become the parent node var copy = new BranchChunk(me.children); copy.parent = me; me.children = [copy, sibling]; me = copy; } else { me.size -= sibling.size; me.height -= sibling.height; var myIndex = indexOf(me.parent.children, me); me.parent.children.splice(myIndex + 1, 0, sibling); } sibling.parent = me.parent; } while (me.children.length > 10) me.parent.maybeSpill(); }, iterN: function(at, n, op) { for (var i = 0; i < this.children.length; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at < sz) { var used = Math.min(n, sz - at); if (child.iterN(at, used, op)) { return true } if ((n -= used) == 0) { break } at = 0; } else { at -= sz; } } } }; // Line widgets are block elements displayed above or below a line. var LineWidget = function(doc, node, options) { if (options) { for (var opt in options) { if (options.hasOwnProperty(opt)) { this[opt] = options[opt]; } } } this.doc = doc; this.node = node; }; LineWidget.prototype.clear = function () { var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line); if (no == null || !ws) { return } for (var i = 0; i < ws.length; ++i) { if (ws[i] == this) { ws.splice(i--, 1); } } if (!ws.length) { line.widgets = null; } var height = widgetHeight(this); updateLineHeight(line, Math.max(0, line.height - height)); if (cm) { runInOp(cm, function () { adjustScrollWhenAboveVisible(cm, line, -height); regLineChange(cm, no, "widget"); }); signalLater(cm, "lineWidgetCleared", cm, this, no); } }; LineWidget.prototype.changed = function () { var this$1 = this; var oldH = this.height, cm = this.doc.cm, line = this.line; this.height = null; var diff = widgetHeight(this) - oldH; if (!diff) { return } if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); } if (cm) { runInOp(cm, function () { cm.curOp.forceUpdate = true; adjustScrollWhenAboveVisible(cm, line, diff); signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line)); }); } }; eventMixin(LineWidget); function adjustScrollWhenAboveVisible(cm, line, diff) { if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) { addToScrollTop(cm, diff); } } function addLineWidget(doc, handle, node, options) { var widget = new LineWidget(doc, node, options); var cm = doc.cm; if (cm && widget.noHScroll) { cm.display.alignWidgets = true; } changeLine(doc, handle, "widget", function (line) { var widgets = line.widgets || (line.widgets = []); if (widget.insertAt == null) { widgets.push(widget); } else { widgets.splice(Math.min(widgets.length, Math.max(0, widget.insertAt)), 0, widget); } widget.line = line; if (cm && !lineIsHidden(doc, line)) { var aboveVisible = heightAtLine(line) < doc.scrollTop; updateLineHeight(line, line.height + widgetHeight(widget)); if (aboveVisible) { addToScrollTop(cm, widget.height); } cm.curOp.forceUpdate = true; } return true }); if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)); } return widget } // TEXTMARKERS // Created with markText and setBookmark methods. A TextMarker is a // handle that can be used to clear or find a marked position in the // document. Line objects hold arrays (markedSpans) containing // {from, to, marker} object pointing to such marker objects, and // indicating that such a marker is present on that line. Multiple // lines may point to the same marker when it spans across lines. // The spans will have null for their from/to properties when the // marker continues beyond the start/end of the line. Markers have // links back to the lines they currently touch. // Collapsed markers have unique ids, in order to be able to order // them, which is needed for uniquely determining an outer marker // when they overlap (they may nest, but not partially overlap). var nextMarkerId = 0; var TextMarker = function(doc, type) { this.lines = []; this.type = type; this.doc = doc; this.id = ++nextMarkerId; }; // Clear the marker. TextMarker.prototype.clear = function () { if (this.explicitlyCleared) { return } var cm = this.doc.cm, withOp = cm && !cm.curOp; if (withOp) { startOperation(cm); } if (hasHandler(this, "clear")) { var found = this.find(); if (found) { signalLater(this, "clear", found.from, found.to); } } var min = null, max = null; for (var i = 0; i < this.lines.length; ++i) { var line = this.lines[i]; var span = getMarkedSpanFor(line.markedSpans, this); if (cm && !this.collapsed) { regLineChange(cm, lineNo(line), "text"); } else if (cm) { if (span.to != null) { max = lineNo(line); } if (span.from != null) { min = lineNo(line); } } line.markedSpans = removeMarkedSpan(line.markedSpans, span); if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm) { updateLineHeight(line, textHeight(cm.display)); } } if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) { var visual = visualLine(this.lines[i$1]), len = lineLength(visual); if (len > cm.display.maxLineLength) { cm.display.maxLine = visual; cm.display.maxLineLength = len; cm.display.maxLineChanged = true; } } } if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); } this.lines.length = 0; this.explicitlyCleared = true; if (this.atomic && this.doc.cantEdit) { this.doc.cantEdit = false; if (cm) { reCheckSelection(cm.doc); } } if (cm) { signalLater(cm, "markerCleared", cm, this, min, max); } if (withOp) { endOperation(cm); } if (this.parent) { this.parent.clear(); } }; // Find the position of the marker in the document. Returns a {from, // to} object by default. Side can be passed to get a specific side // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the // Pos objects returned contain a line object, rather than a line // number (used to prevent looking up the same line twice). TextMarker.prototype.find = function (side, lineObj) { if (side == null && this.type == "bookmark") { side = 1; } var from, to; for (var i = 0; i < this.lines.length; ++i) { var line = this.lines[i]; var span = getMarkedSpanFor(line.markedSpans, this); if (span.from != null) { from = Pos(lineObj ? line : lineNo(line), span.from); if (side == -1) { return from } } if (span.to != null) { to = Pos(lineObj ? line : lineNo(line), span.to); if (side == 1) { return to } } } return from && {from: from, to: to} }; // Signals that the marker's widget changed, and surrounding layout // should be recomputed. TextMarker.prototype.changed = function () { var this$1 = this; var pos = this.find(-1, true), widget = this, cm = this.doc.cm; if (!pos || !cm) { return } runInOp(cm, function () { var line = pos.line, lineN = lineNo(pos.line); var view = findViewForLine(cm, lineN); if (view) { clearLineMeasurementCacheFor(view); cm.curOp.selectionChanged = cm.curOp.forceUpdate = true; } cm.curOp.updateMaxLine = true; if (!lineIsHidden(widget.doc, line) && widget.height != null) { var oldHeight = widget.height; widget.height = null; var dHeight = widgetHeight(widget) - oldHeight; if (dHeight) { updateLineHeight(line, line.height + dHeight); } } signalLater(cm, "markerChanged", cm, this$1); }); }; TextMarker.prototype.attachLine = function (line) { if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp; if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); } } this.lines.push(line); }; TextMarker.prototype.detachLine = function (line) { this.lines.splice(indexOf(this.lines, line), 1); if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); } }; eventMixin(TextMarker); // Create a marker, wire it up to the right lines, and function markText(doc, from, to, options, type) { // Shared markers (across linked documents) are handled separately // (markTextShared will call out to this again, once per // document). if (options && options.shared) { return markTextShared(doc, from, to, options, type) } // Ensure we are in an operation. if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) } var marker = new TextMarker(doc, type), diff = cmp(from, to); if (options) { copyObj(options, marker, false); } // Don't connect empty markers unless clearWhenEmpty is false if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) { return marker } if (marker.replacedWith) { // Showing up as a widget implies collapsed (widget replaces text) marker.collapsed = true; marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget"); if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true"); } if (options.insertLeft) { marker.widgetNode.insertLeft = true; } } if (marker.collapsed) { if (conflictingCollapsedRange(doc, from.line, from, to, marker) || from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) { throw new Error("Inserting collapsed marker partially overlapping an existing one") } seeCollapsedSpans(); } if (marker.addToHistory) { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); } var curLine = from.line, cm = doc.cm, updateMaxLine; doc.iter(curLine, to.line + 1, function (line) { if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) { updateMaxLine = true; } if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); } addMarkedSpan(line, new MarkedSpan(marker, curLine == from.line ? from.ch : null, curLine == to.line ? to.ch : null), doc.cm && doc.cm.curOp); ++curLine; }); // lineIsHidden depends on the presence of the spans, so needs a second pass if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) { if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); } }); } if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }); } if (marker.readOnly) { seeReadOnlySpans(); if (doc.history.done.length || doc.history.undone.length) { doc.clearHistory(); } } if (marker.collapsed) { marker.id = ++nextMarkerId; marker.atomic = true; } if (cm) { // Sync editor state if (updateMaxLine) { cm.curOp.updateMaxLine = true; } if (marker.collapsed) { regChange(cm, from.line, to.line + 1); } else if (marker.className || marker.startStyle || marker.endStyle || marker.css || marker.attributes || marker.title) { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text"); } } if (marker.atomic) { reCheckSelection(cm.doc); } signalLater(cm, "markerAdded", cm, marker); } return marker } // SHARED TEXTMARKERS // A shared marker spans multiple linked documents. It is // implemented as a meta-marker-object controlling multiple normal // markers. var SharedTextMarker = function(markers, primary) { this.markers = markers; this.primary = primary; for (var i = 0; i < markers.length; ++i) { markers[i].parent = this; } }; SharedTextMarker.prototype.clear = function () { if (this.explicitlyCleared) { return } this.explicitlyCleared = true; for (var i = 0; i < this.markers.length; ++i) { this.markers[i].clear(); } signalLater(this, "clear"); }; SharedTextMarker.prototype.find = function (side, lineObj) { return this.primary.find(side, lineObj) }; eventMixin(SharedTextMarker); function markTextShared(doc, from, to, options, type) { options = copyObj(options); options.shared = false; var markers = [markText(doc, from, to, options, type)], primary = markers[0]; var widget = options.widgetNode; linkedDocs(doc, function (doc) { if (widget) { options.widgetNode = widget.cloneNode(true); } markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); for (var i = 0; i < doc.linked.length; ++i) { if (doc.linked[i].isParent) { return } } primary = lst(markers); }); return new SharedTextMarker(markers, primary) } function findSharedMarkers(doc) { return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; }) } function copySharedMarkers(doc, markers) { for (var i = 0; i < markers.length; i++) { var marker = markers[i], pos = marker.find(); var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to); if (cmp(mFrom, mTo)) { var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type); marker.markers.push(subMark); subMark.parent = marker; } } } function detachSharedMarkers(markers) { var loop = function ( i ) { var marker = markers[i], linked = [marker.primary.doc]; linkedDocs(marker.primary.doc, function (d) { return linked.push(d); }); for (var j = 0; j < marker.markers.length; j++) { var subMarker = marker.markers[j]; if (indexOf(linked, subMarker.doc) == -1) { subMarker.parent = null; marker.markers.splice(j--, 1); } } }; for (var i = 0; i < markers.length; i++) loop( i ); } var nextDocId = 0; var Doc = function(text, mode, firstLine, lineSep, direction) { if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) } if (firstLine == null) { firstLine = 0; } BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); this.first = firstLine; this.scrollTop = this.scrollLeft = 0; this.cantEdit = false; this.cleanGeneration = 1; this.modeFrontier = this.highlightFrontier = firstLine; var start = Pos(firstLine, 0); this.sel = simpleSelection(start); this.history = new History(null); this.id = ++nextDocId; this.modeOption = mode; this.lineSep = lineSep; this.direction = (direction == "rtl") ? "rtl" : "ltr"; this.extend = false; if (typeof text == "string") { text = this.splitLines(text); } updateDoc(this, {from: start, to: start, text: text}); setSelection(this, simpleSelection(start), sel_dontScroll); }; Doc.prototype = createObj(BranchChunk.prototype, { constructor: Doc, // Iterate over the document. Supports two forms -- with only one // argument, it calls that for each line in the document. With // three, it iterates over the range given by the first two (with // the second being non-inclusive). iter: function(from, to, op) { if (op) { this.iterN(from - this.first, to - from, op); } else { this.iterN(this.first, this.first + this.size, from); } }, // Non-public interface for adding and removing lines. insert: function(at, lines) { var height = 0; for (var i = 0; i < lines.length; ++i) { height += lines[i].height; } this.insertInner(at - this.first, lines, height); }, remove: function(at, n) { this.removeInner(at - this.first, n); }, // From here, the methods are part of the public interface. Most // are also available from CodeMirror (editor) instances. getValue: function(lineSep) { var lines = getLines(this, this.first, this.first + this.size); if (lineSep === false) { return lines } return lines.join(lineSep || this.lineSeparator()) }, setValue: docMethodOp(function(code) { var top = Pos(this.first, 0), last = this.first + this.size - 1; makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), text: this.splitLines(code), origin: "setValue", full: true}, true); if (this.cm) { scrollToCoords(this.cm, 0, 0); } setSelection(this, simpleSelection(top), sel_dontScroll); }), replaceRange: function(code, from, to, origin) { from = clipPos(this, from); to = to ? clipPos(this, to) : from; replaceRange(this, code, from, to, origin); }, getRange: function(from, to, lineSep) { var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); if (lineSep === false) { return lines } if (lineSep === '') { return lines.join('') } return lines.join(lineSep || this.lineSeparator()) }, getLine: function(line) {var l = this.getLineHandle(line); return l && l.text}, getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }}, getLineNumber: function(line) {return lineNo(line)}, getLineHandleVisualStart: function(line) { if (typeof line == "number") { line = getLine(this, line); } return visualLine(line) }, lineCount: function() {return this.size}, firstLine: function() {return this.first}, lastLine: function() {return this.first + this.size - 1}, clipPos: function(pos) {return clipPos(this, pos)}, getCursor: function(start) { var range = this.sel.primary(), pos; if (start == null || start == "head") { pos = range.head; } else if (start == "anchor") { pos = range.anchor; } else if (start == "end" || start == "to" || start === false) { pos = range.to(); } else { pos = range.from(); } return pos }, listSelections: function() { return this.sel.ranges }, somethingSelected: function() {return this.sel.somethingSelected()}, setCursor: docMethodOp(function(line, ch, options) { setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options); }), setSelection: docMethodOp(function(anchor, head, options) { setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options); }), extendSelection: docMethodOp(function(head, other, options) { extendSelection(this, clipPos(this, head), other && clipPos(this, other), options); }), extendSelections: docMethodOp(function(heads, options) { extendSelections(this, clipPosArray(this, heads), options); }), extendSelectionsBy: docMethodOp(function(f, options) { var heads = map(this.sel.ranges, f); extendSelections(this, clipPosArray(this, heads), options); }), setSelections: docMethodOp(function(ranges, primary, options) { if (!ranges.length) { return } var out = []; for (var i = 0; i < ranges.length; i++) { out[i] = new Range(clipPos(this, ranges[i].anchor), clipPos(this, ranges[i].head || ranges[i].anchor)); } if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); } setSelection(this, normalizeSelection(this.cm, out, primary), options); }), addSelection: docMethodOp(function(anchor, head, options) { var ranges = this.sel.ranges.slice(0); ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))); setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options); }), getSelection: function(lineSep) { var ranges = this.sel.ranges, lines; for (var i = 0; i < ranges.length; i++) { var sel = getBetween(this, ranges[i].from(), ranges[i].to()); lines = lines ? lines.concat(sel) : sel; } if (lineSep === false) { return lines } else { return lines.join(lineSep || this.lineSeparator()) } }, getSelections: function(lineSep) { var parts = [], ranges = this.sel.ranges; for (var i = 0; i < ranges.length; i++) { var sel = getBetween(this, ranges[i].from(), ranges[i].to()); if (lineSep !== false) { sel = sel.join(lineSep || this.lineSeparator()); } parts[i] = sel; } return parts }, replaceSelection: function(code, collapse, origin) { var dup = []; for (var i = 0; i < this.sel.ranges.length; i++) { dup[i] = code; } this.replaceSelections(dup, collapse, origin || "+input"); }, replaceSelections: docMethodOp(function(code, collapse, origin) { var changes = [], sel = this.sel; for (var i = 0; i < sel.ranges.length; i++) { var range = sel.ranges[i]; changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin}; } var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse); for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) { makeChange(this, changes[i$1]); } if (newSel) { setSelectionReplaceHistory(this, newSel); } else if (this.cm) { ensureCursorVisible(this.cm); } }), undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}), redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}), undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}), redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}), setExtending: function(val) {this.extend = val;}, getExtending: function() {return this.extend}, historySize: function() { var hist = this.history, done = 0, undone = 0; for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } } for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } } return {undo: done, redo: undone} }, clearHistory: function() { var this$1 = this; this.history = new History(this.history); linkedDocs(this, function (doc) { return doc.history = this$1.history; }, true); }, markClean: function() { this.cleanGeneration = this.changeGeneration(true); }, changeGeneration: function(forceSplit) { if (forceSplit) { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; } return this.history.generation }, isClean: function (gen) { return this.history.generation == (gen || this.cleanGeneration) }, getHistory: function() { return {done: copyHistoryArray(this.history.done), undone: copyHistoryArray(this.history.undone)} }, setHistory: function(histData) { var hist = this.history = new History(this.history); hist.done = copyHistoryArray(histData.done.slice(0), null, true); hist.undone = copyHistoryArray(histData.undone.slice(0), null, true); }, setGutterMarker: docMethodOp(function(line, gutterID, value) { return changeLine(this, line, "gutter", function (line) { var markers = line.gutterMarkers || (line.gutterMarkers = {}); markers[gutterID] = value; if (!value && isEmpty(markers)) { line.gutterMarkers = null; } return true }) }), clearGutter: docMethodOp(function(gutterID) { var this$1 = this; this.iter(function (line) { if (line.gutterMarkers && line.gutterMarkers[gutterID]) { changeLine(this$1, line, "gutter", function () { line.gutterMarkers[gutterID] = null; if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; } return true }); } }); }), lineInfo: function(line) { var n; if (typeof line == "number") { if (!isLine(this, line)) { return null } n = line; line = getLine(this, line); if (!line) { return null } } else { n = lineNo(line); if (n == null) { return null } } return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, widgets: line.widgets} }, addLineClass: docMethodOp(function(handle, where, cls) { return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : where == "gutter" ? "gutterClass" : "wrapClass"; if (!line[prop]) { line[prop] = cls; } else if (classTest(cls).test(line[prop])) { return false } else { line[prop] += " " + cls; } return true }) }), removeLineClass: docMethodOp(function(handle, where, cls) { return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : where == "gutter" ? "gutterClass" : "wrapClass"; var cur = line[prop]; if (!cur) { return false } else if (cls == null) { line[prop] = null; } else { var found = cur.match(classTest(cls)); if (!found) { return false } var end = found.index + found[0].length; line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; } return true }) }), addLineWidget: docMethodOp(function(handle, node, options) { return addLineWidget(this, handle, node, options) }), removeLineWidget: function(widget) { widget.clear(); }, markText: function(from, to, options) { return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range") }, setBookmark: function(pos, options) { var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), insertLeft: options && options.insertLeft, clearWhenEmpty: false, shared: options && options.shared, handleMouseEvents: options && options.handleMouseEvents}; pos = clipPos(this, pos); return markText(this, pos, pos, realOpts, "bookmark") }, findMarksAt: function(pos) { pos = clipPos(this, pos); var markers = [], spans = getLine(this, pos.line).markedSpans; if (spans) { for (var i = 0; i < spans.length; ++i) { var span = spans[i]; if ((span.from == null || span.from <= pos.ch) && (span.to == null || span.to >= pos.ch)) { markers.push(span.marker.parent || span.marker); } } } return markers }, findMarks: function(from, to, filter) { from = clipPos(this, from); to = clipPos(this, to); var found = [], lineNo = from.line; this.iter(from.line, to.line + 1, function (line) { var spans = line.markedSpans; if (spans) { for (var i = 0; i < spans.length; i++) { var span = spans[i]; if (!(span.to != null && lineNo == from.line && from.ch >= span.to || span.from == null && lineNo != from.line || span.from != null && lineNo == to.line && span.from >= to.ch) && (!filter || filter(span.marker))) { found.push(span.marker.parent || span.marker); } } } ++lineNo; }); return found }, getAllMarks: function() { var markers = []; this.iter(function (line) { var sps = line.markedSpans; if (sps) { for (var i = 0; i < sps.length; ++i) { if (sps[i].from != null) { markers.push(sps[i].marker); } } } }); return markers }, posFromIndex: function(off) { var ch, lineNo = this.first, sepSize = this.lineSeparator().length; this.iter(function (line) { var sz = line.text.length + sepSize; if (sz > off) { ch = off; return true } off -= sz; ++lineNo; }); return clipPos(this, Pos(lineNo, ch)) }, indexFromPos: function (coords) { coords = clipPos(this, coords); var index = coords.ch; if (coords.line < this.first || coords.ch < 0) { return 0 } var sepSize = this.lineSeparator().length; this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value index += line.text.length + sepSize; }); return index }, copy: function(copyHistory) { var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first, this.lineSep, this.direction); doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; doc.sel = this.sel; doc.extend = false; if (copyHistory) { doc.history.undoDepth = this.history.undoDepth; doc.setHistory(this.getHistory()); } return doc }, linkedDoc: function(options) { if (!options) { options = {}; } var from = this.first, to = this.first + this.size; if (options.from != null && options.from > from) { from = options.from; } if (options.to != null && options.to < to) { to = options.to; } var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction); if (options.sharedHist) { copy.history = this.history ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; copySharedMarkers(copy, findSharedMarkers(this)); return copy }, unlinkDoc: function(other) { if (other instanceof CodeMirror) { other = other.doc; } if (this.linked) { for (var i = 0; i < this.linked.length; ++i) { var link = this.linked[i]; if (link.doc != other) { continue } this.linked.splice(i, 1); other.unlinkDoc(this); detachSharedMarkers(findSharedMarkers(this)); break } } // If the histories were shared, split them again if (other.history == this.history) { var splitIds = [other.id]; linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true); other.history = new History(null); other.history.done = copyHistoryArray(this.history.done, splitIds); other.history.undone = copyHistoryArray(this.history.undone, splitIds); } }, iterLinkedDocs: function(f) {linkedDocs(this, f);}, getMode: function() {return this.mode}, getEditor: function() {return this.cm}, splitLines: function(str) { if (this.lineSep) { return str.split(this.lineSep) } return splitLinesAuto(str) }, lineSeparator: function() { return this.lineSep || "\n" }, setDirection: docMethodOp(function (dir) { if (dir != "rtl") { dir = "ltr"; } if (dir == this.direction) { return } this.direction = dir; this.iter(function (line) { return line.order = null; }); if (this.cm) { directionChanged(this.cm); } }) }); // Public alias. Doc.prototype.eachLine = Doc.prototype.iter; // Kludge to work around strange IE behavior where it'll sometimes // re-fire a series of drag-related events right after the drop (#1551) var lastDrop = 0; function onDrop(e) { var cm = this; clearDragCursor(cm); if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return } e_preventDefault(e); if (ie) { lastDrop = +new Date; } var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; if (!pos || cm.isReadOnly()) { return } // Might be a file drop, in which case we simply extract the text // and insert it. if (files && files.length && window.FileReader && window.File) { var n = files.length, text = Array(n), read = 0; var markAsReadAndPasteIfAllFilesAreRead = function () { if (++read == n) { operation(cm, function () { pos = clipPos(cm.doc, pos); var change = {from: pos, to: pos, text: cm.doc.splitLines( text.filter(function (t) { return t != null; }).join(cm.doc.lineSeparator())), origin: "paste"}; makeChange(cm.doc, change); setSelectionReplaceHistory(cm.doc, simpleSelection(clipPos(cm.doc, pos), clipPos(cm.doc, changeEnd(change)))); })(); } }; var readTextFromFile = function (file, i) { if (cm.options.allowDropFileTypes && indexOf(cm.options.allowDropFileTypes, file.type) == -1) { markAsReadAndPasteIfAllFilesAreRead(); return } var reader = new FileReader; reader.onerror = function () { return markAsReadAndPasteIfAllFilesAreRead(); }; reader.onload = function () { var content = reader.result; if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { markAsReadAndPasteIfAllFilesAreRead(); return } text[i] = content; markAsReadAndPasteIfAllFilesAreRead(); }; reader.readAsText(file); }; for (var i = 0; i < files.length; i++) { readTextFromFile(files[i], i); } } else { // Normal drop // Don't do a replace if the drop happened inside of the selected text. if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { cm.state.draggingText(e); // Ensure the editor is re-focused setTimeout(function () { return cm.display.input.focus(); }, 20); return } try { var text$1 = e.dataTransfer.getData("Text"); if (text$1) { var selected; if (cm.state.draggingText && !cm.state.draggingText.copy) { selected = cm.listSelections(); } setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)); if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1) { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag"); } } cm.replaceSelection(text$1, "around", "paste"); cm.display.input.focus(); } } catch(e$1){} } } function onDragStart(cm, e) { if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return } if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return } e.dataTransfer.setData("Text", cm.getSelection()); e.dataTransfer.effectAllowed = "copyMove"; // Use dummy image instead of default browsers image. // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. if (e.dataTransfer.setDragImage && !safari) { var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; if (presto) { img.width = img.height = 1; cm.display.wrapper.appendChild(img); // Force a relayout, or Opera won't use our image for some obscure reason img._top = img.offsetTop; } e.dataTransfer.setDragImage(img, 0, 0); if (presto) { img.parentNode.removeChild(img); } } } function onDragOver(cm, e) { var pos = posFromMouse(cm, e); if (!pos) { return } var frag = document.createDocumentFragment(); drawSelectionCursor(cm, pos, frag); if (!cm.display.dragCursor) { cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors"); cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv); } removeChildrenAndAdd(cm.display.dragCursor, frag); } function clearDragCursor(cm) { if (cm.display.dragCursor) { cm.display.lineSpace.removeChild(cm.display.dragCursor); cm.display.dragCursor = null; } } // These must be handled carefully, because naively registering a // handler for each editor will cause the editors to never be // garbage collected. function forEachCodeMirror(f) { if (!document.getElementsByClassName) { return } var byClass = document.getElementsByClassName("CodeMirror"), editors = []; for (var i = 0; i < byClass.length; i++) { var cm = byClass[i].CodeMirror; if (cm) { editors.push(cm); } } if (editors.length) { editors[0].operation(function () { for (var i = 0; i < editors.length; i++) { f(editors[i]); } }); } } var globalsRegistered = false; function ensureGlobalHandlers() { if (globalsRegistered) { return } registerGlobalHandlers(); globalsRegistered = true; } function registerGlobalHandlers() { // When the window resizes, we need to refresh active editors. var resizeTimer; on(window, "resize", function () { if (resizeTimer == null) { resizeTimer = setTimeout(function () { resizeTimer = null; forEachCodeMirror(onResize); }, 100); } }); // When the window loses focus, we want to show the editor as blurred on(window, "blur", function () { return forEachCodeMirror(onBlur); }); } // Called when the window resizes function onResize(cm) { var d = cm.display; // Might be a text scaling operation, clear size caches. d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; d.scrollbarsClipped = false; cm.setSize(); } var keyNames = { 3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 145: "ScrollLock", 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 224: "Mod", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert" }; // Number keys for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); } // Alphabetic keys for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); } // Function keys for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2; } var keyMap = {}; keyMap.basic = { "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", "Esc": "singleSelection" }; // Note that the save and find-related commands aren't defined by // default. User code or addons can define them. Unknown commands // are simply ignored. keyMap.pcDefault = { "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", "fallthrough": "basic" }; // Very basic readline/emacs-style bindings, which are standard on Mac. keyMap.emacsy = { "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars", "Ctrl-O": "openLine" }; keyMap.macDefault = { "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", "fallthrough": ["basic", "emacsy"] }; keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; // KEYMAP DISPATCH function normalizeKeyName(name) { var parts = name.split(/-(?!$)/); name = parts[parts.length - 1]; var alt, ctrl, shift, cmd; for (var i = 0; i < parts.length - 1; i++) { var mod = parts[i]; if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; } else if (/^a(lt)?$/i.test(mod)) { alt = true; } else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; } else if (/^s(hift)?$/i.test(mod)) { shift = true; } else { throw new Error("Unrecognized modifier name: " + mod) } } if (alt) { name = "Alt-" + name; } if (ctrl) { name = "Ctrl-" + name; } if (cmd) { name = "Cmd-" + name; } if (shift) { name = "Shift-" + name; } return name } // This is a kludge to keep keymaps mostly working as raw objects // (backwards compatibility) while at the same time support features // like normalization and multi-stroke key bindings. It compiles a // new normalized keymap, and then updates the old object to reflect // this. function normalizeKeyMap(keymap) { var copy = {}; for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) { var value = keymap[keyname]; if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue } if (value == "...") { delete keymap[keyname]; continue } var keys = map(keyname.split(" "), normalizeKeyName); for (var i = 0; i < keys.length; i++) { var val = (void 0), name = (void 0); if (i == keys.length - 1) { name = keys.join(" "); val = value; } else { name = keys.slice(0, i + 1).join(" "); val = "..."; } var prev = copy[name]; if (!prev) { copy[name] = val; } else if (prev != val) { throw new Error("Inconsistent bindings for " + name) } } delete keymap[keyname]; } } for (var prop in copy) { keymap[prop] = copy[prop]; } return keymap } function lookupKey(key, map, handle, context) { map = getKeyMap(map); var found = map.call ? map.call(key, context) : map[key]; if (found === false) { return "nothing" } if (found === "...") { return "multi" } if (found != null && handle(found)) { return "handled" } if (map.fallthrough) { if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") { return lookupKey(key, map.fallthrough, handle, context) } for (var i = 0; i < map.fallthrough.length; i++) { var result = lookupKey(key, map.fallthrough[i], handle, context); if (result) { return result } } } } // Modifier key presses don't count as 'real' key presses for the // purpose of keymap fallthrough. function isModifierKey(value) { var name = typeof value == "string" ? value : keyNames[value.keyCode]; return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod" } function addModifierNames(name, event, noShift) { var base = name; if (event.altKey && base != "Alt") { name = "Alt-" + name; } if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name; } if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Mod") { name = "Cmd-" + name; } if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name; } return name } // Look up the name of a key as indicated by an event object. function keyName(event, noShift) { if (presto && event.keyCode == 34 && event["char"]) { return false } var name = keyNames[event.keyCode]; if (name == null || event.altGraphKey) { return false } // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause, // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+) if (event.keyCode == 3 && event.code) { name = event.code; } return addModifierNames(name, event, noShift) } function getKeyMap(val) { return typeof val == "string" ? keyMap[val] : val } // Helper for deleting text near the selection(s), used to implement // backspace, delete, and similar functionality. function deleteNearSelection(cm, compute) { var ranges = cm.doc.sel.ranges, kill = []; // Build up a set of ranges to kill first, merging overlapping // ranges. for (var i = 0; i < ranges.length; i++) { var toKill = compute(ranges[i]); while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { var replaced = kill.pop(); if (cmp(replaced.from, toKill.from) < 0) { toKill.from = replaced.from; break } } kill.push(toKill); } // Next, remove those actual ranges. runInOp(cm, function () { for (var i = kill.length - 1; i >= 0; i--) { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); } ensureCursorVisible(cm); }); } function moveCharLogically(line, ch, dir) { var target = skipExtendingChars(line.text, ch + dir, dir); return target < 0 || target > line.text.length ? null : target } function moveLogically(line, start, dir) { var ch = moveCharLogically(line, start.ch, dir); return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before") } function endOfLine(visually, cm, lineObj, lineNo, dir) { if (visually) { if (cm.doc.direction == "rtl") { dir = -dir; } var order = getOrder(lineObj, cm.doc.direction); if (order) { var part = dir < 0 ? lst(order) : order[0]; var moveInStorageOrder = (dir < 0) == (part.level == 1); var sticky = moveInStorageOrder ? "after" : "before"; var ch; // With a wrapped rtl chunk (possibly spanning multiple bidi parts), // it could be that the last bidi part is not on the last visual line, // since visual lines contain content order-consecutive chunks. // Thus, in rtl, we are looking for the first (content-order) character // in the rtl chunk that is on the last line (that is, the same line // as the last (content-order) character). if (part.level > 0 || cm.doc.direction == "rtl") { var prep = prepareMeasureForLine(cm, lineObj); ch = dir < 0 ? lineObj.text.length - 1 : 0; var targetTop = measureCharPrepared(cm, prep, ch).top; ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch); if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1); } } else { ch = dir < 0 ? part.to : part.from; } return new Pos(lineNo, ch, sticky) } } return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after") } function moveVisually(cm, line, start, dir) { var bidi = getOrder(line, cm.doc.direction); if (!bidi) { return moveLogically(line, start, dir) } if (start.ch >= line.text.length) { start.ch = line.text.length; start.sticky = "before"; } else if (start.ch <= 0) { start.ch = 0; start.sticky = "after"; } var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos]; if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) { // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines, // nothing interesting happens. return moveLogically(line, start, dir) } var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); }; var prep; var getWrappedLineExtent = function (ch) { if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} } prep = prep || prepareMeasureForLine(cm, line); return wrappedLineExtentChar(cm, line, prep, ch) }; var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch); if (cm.doc.direction == "rtl" || part.level == 1) { var moveInStorageOrder = (part.level == 1) == (dir < 0); var ch = mv(start, moveInStorageOrder ? 1 : -1); if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) { // Case 2: We move within an rtl part or in an rtl editor on the same visual line var sticky = moveInStorageOrder ? "before" : "after"; return new Pos(start.line, ch, sticky) } } // Case 3: Could not move within this bidi part in this visual line, so leave // the current bidi part var searchInVisualLine = function (partPos, dir, wrappedLineExtent) { var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder ? new Pos(start.line, mv(ch, 1), "before") : new Pos(start.line, ch, "after"); }; for (; partPos >= 0 && partPos < bidi.length; partPos += dir) { var part = bidi[partPos]; var moveInStorageOrder = (dir > 0) == (part.level != 1); var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1); if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) } ch = moveInStorageOrder ? part.from : mv(part.to, -1); if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) } } }; // Case 3a: Look for other bidi parts on the same visual line var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent); if (res) { return res } // Case 3b: Look for other bidi parts on the next visual line var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1); if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) { res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh)); if (res) { return res } } // Case 4: Nowhere to move return null } // Commands are parameter-less actions that can be performed on an // editor, mostly used for keybindings. var commands = { selectAll: selectAll, singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); }, killLine: function (cm) { return deleteNearSelection(cm, function (range) { if (range.empty()) { var len = getLine(cm.doc, range.head.line).text.length; if (range.head.ch == len && range.head.line < cm.lastLine()) { return {from: range.head, to: Pos(range.head.line + 1, 0)} } else { return {from: range.head, to: Pos(range.head.line, len)} } } else { return {from: range.from(), to: range.to()} } }); }, deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({ from: Pos(range.from().line, 0), to: clipPos(cm.doc, Pos(range.to().line + 1, 0)) }); }); }, delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({ from: Pos(range.from().line, 0), to: range.from() }); }); }, delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { var top = cm.charCoords(range.head, "div").top + 5; var leftPos = cm.coordsChar({left: 0, top: top}, "div"); return {from: leftPos, to: range.from()} }); }, delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) { var top = cm.charCoords(range.head, "div").top + 5; var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); return {from: range.from(), to: rightPos } }); }, undo: function (cm) { return cm.undo(); }, redo: function (cm) { return cm.redo(); }, undoSelection: function (cm) { return cm.undoSelection(); }, redoSelection: function (cm) { return cm.redoSelection(); }, goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); }, goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); }, goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); }, {origin: "+move", bias: 1} ); }, goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); }, {origin: "+move", bias: 1} ); }, goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); }, {origin: "+move", bias: -1} ); }, goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.cursorCoords(range.head, "div").top + 5; return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") }, sel_move); }, goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.cursorCoords(range.head, "div").top + 5; return cm.coordsChar({left: 0, top: top}, "div") }, sel_move); }, goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) { var top = cm.cursorCoords(range.head, "div").top + 5; var pos = cm.coordsChar({left: 0, top: top}, "div"); if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) } return pos }, sel_move); }, goLineUp: function (cm) { return cm.moveV(-1, "line"); }, goLineDown: function (cm) { return cm.moveV(1, "line"); }, goPageUp: function (cm) { return cm.moveV(-1, "page"); }, goPageDown: function (cm) { return cm.moveV(1, "page"); }, goCharLeft: function (cm) { return cm.moveH(-1, "char"); }, goCharRight: function (cm) { return cm.moveH(1, "char"); }, goColumnLeft: function (cm) { return cm.moveH(-1, "column"); }, goColumnRight: function (cm) { return cm.moveH(1, "column"); }, goWordLeft: function (cm) { return cm.moveH(-1, "word"); }, goGroupRight: function (cm) { return cm.moveH(1, "group"); }, goGroupLeft: function (cm) { return cm.moveH(-1, "group"); }, goWordRight: function (cm) { return cm.moveH(1, "word"); }, delCharBefore: function (cm) { return cm.deleteH(-1, "codepoint"); }, delCharAfter: function (cm) { return cm.deleteH(1, "char"); }, delWordBefore: function (cm) { return cm.deleteH(-1, "word"); }, delWordAfter: function (cm) { return cm.deleteH(1, "word"); }, delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); }, delGroupAfter: function (cm) { return cm.deleteH(1, "group"); }, indentAuto: function (cm) { return cm.indentSelection("smart"); }, indentMore: function (cm) { return cm.indentSelection("add"); }, indentLess: function (cm) { return cm.indentSelection("subtract"); }, insertTab: function (cm) { return cm.replaceSelection("\t"); }, insertSoftTab: function (cm) { var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize; for (var i = 0; i < ranges.length; i++) { var pos = ranges[i].from(); var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize); spaces.push(spaceStr(tabSize - col % tabSize)); } cm.replaceSelections(spaces); }, defaultTab: function (cm) { if (cm.somethingSelected()) { cm.indentSelection("add"); } else { cm.execCommand("insertTab"); } }, // Swap the two chars left and right of each selection's head. // Move cursor behind the two swapped characters afterwards. // // Doesn't consider line feeds a character. // Doesn't scan more than one line above to find a character. // Doesn't do anything on an empty line. // Doesn't do anything with non-empty selections. transposeChars: function (cm) { return runInOp(cm, function () { var ranges = cm.listSelections(), newSel = []; for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) { continue } var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text; if (line) { if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); } if (cur.ch > 0) { cur = new Pos(cur.line, cur.ch + 1); cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), Pos(cur.line, cur.ch - 2), cur, "+transpose"); } else if (cur.line > cm.doc.first) { var prev = getLine(cm.doc, cur.line - 1).text; if (prev) { cur = new Pos(cur.line, 1); cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() + prev.charAt(prev.length - 1), Pos(cur.line - 1, prev.length - 1), cur, "+transpose"); } } } newSel.push(new Range(cur, cur)); } cm.setSelections(newSel); }); }, newlineAndIndent: function (cm) { return runInOp(cm, function () { var sels = cm.listSelections(); for (var i = sels.length - 1; i >= 0; i--) { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input"); } sels = cm.listSelections(); for (var i$1 = 0; i$1 < sels.length; i$1++) { cm.indentLine(sels[i$1].from().line, null, true); } ensureCursorVisible(cm); }); }, openLine: function (cm) { return cm.replaceSelection("\n", "start"); }, toggleOverwrite: function (cm) { return cm.toggleOverwrite(); } }; function lineStart(cm, lineN) { var line = getLine(cm.doc, lineN); var visual = visualLine(line); if (visual != line) { lineN = lineNo(visual); } return endOfLine(true, cm, visual, lineN, 1) } function lineEnd(cm, lineN) { var line = getLine(cm.doc, lineN); var visual = visualLineEnd(line); if (visual != line) { lineN = lineNo(visual); } return endOfLine(true, cm, line, lineN, -1) } function lineStartSmart(cm, pos) { var start = lineStart(cm, pos.line); var line = getLine(cm.doc, start.line); var order = getOrder(line, cm.doc.direction); if (!order || order[0].level == 0) { var firstNonWS = Math.max(start.ch, line.text.search(/\S/)); var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch; return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky) } return start } // Run a handler that was bound to a key. function doHandleBinding(cm, bound, dropShift) { if (typeof bound == "string") { bound = commands[bound]; if (!bound) { return false } } // Ensure previous input has been read, so that the handler sees a // consistent view of the document cm.display.input.ensurePolled(); var prevShift = cm.display.shift, done = false; try { if (cm.isReadOnly()) { cm.state.suppressEdits = true; } if (dropShift) { cm.display.shift = false; } done = bound(cm) != Pass; } finally { cm.display.shift = prevShift; cm.state.suppressEdits = false; } return done } function lookupKeyForEditor(cm, name, handle) { for (var i = 0; i < cm.state.keyMaps.length; i++) { var result = lookupKey(name, cm.state.keyMaps[i], handle, cm); if (result) { return result } } return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) || lookupKey(name, cm.options.keyMap, handle, cm) } // Note that, despite the name, this function is also used to check // for bound mouse clicks. var stopSeq = new Delayed; function dispatchKey(cm, name, e, handle) { var seq = cm.state.keySeq; if (seq) { if (isModifierKey(name)) { return "handled" } if (/\'$/.test(name)) { cm.state.keySeq = null; } else { stopSeq.set(50, function () { if (cm.state.keySeq == seq) { cm.state.keySeq = null; cm.display.input.reset(); } }); } if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true } } return dispatchKeyInner(cm, name, e, handle) } function dispatchKeyInner(cm, name, e, handle) { var result = lookupKeyForEditor(cm, name, handle); if (result == "multi") { cm.state.keySeq = name; } if (result == "handled") { signalLater(cm, "keyHandled", cm, name, e); } if (result == "handled" || result == "multi") { e_preventDefault(e); restartBlink(cm); } return !!result } // Handle a key from the keydown event. function handleKeyBinding(cm, e) { var name = keyName(e, true); if (!name) { return false } if (e.shiftKey && !cm.state.keySeq) { // First try to resolve full name (including 'Shift-'). Failing // that, see if there is a cursor-motion command (starting with // 'go') bound to the keyname without 'Shift-'. return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); }) || dispatchKey(cm, name, e, function (b) { if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) { return doHandleBinding(cm, b) } }) } else { return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); }) } } // Handle a key from the keypress event function handleCharBinding(cm, e, ch) { return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); }) } var lastStoppedKey = null; function onKeyDown(e) { var cm = this; if (e.target && e.target != cm.display.input.getField()) { return } cm.curOp.focus = activeElt(); if (signalDOMEvent(cm, e)) { return } // IE does strange things with escape. if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; } var code = e.keyCode; cm.display.shift = code == 16 || e.shiftKey; var handled = handleKeyBinding(cm, e); if (presto) { lastStoppedKey = handled ? code : null; // Opera has no cut event... we try to at least catch the key combo if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) { cm.replaceSelection("", null, "cut"); } } if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand) { document.execCommand("cut"); } // Turn mouse into crosshair when Alt is held on Mac. if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) { showCrossHair(cm); } } function showCrossHair(cm) { var lineDiv = cm.display.lineDiv; addClass(lineDiv, "CodeMirror-crosshair"); function up(e) { if (e.keyCode == 18 || !e.altKey) { rmClass(lineDiv, "CodeMirror-crosshair"); off(document, "keyup", up); off(document, "mouseover", up); } } on(document, "keyup", up); on(document, "mouseover", up); } function onKeyUp(e) { if (e.keyCode == 16) { this.doc.sel.shift = false; } signalDOMEvent(this, e); } function onKeyPress(e) { var cm = this; if (e.target && e.target != cm.display.input.getField()) { return } if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return } var keyCode = e.keyCode, charCode = e.charCode; if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return } var ch = String.fromCharCode(charCode == null ? keyCode : charCode); // Some browsers fire keypress events for backspace if (ch == "\x08") { return } if (handleCharBinding(cm, e, ch)) { return } cm.display.input.onKeyPress(e); } var DOUBLECLICK_DELAY = 400; var PastClick = function(time, pos, button) { this.time = time; this.pos = pos; this.button = button; }; PastClick.prototype.compare = function (time, pos, button) { return this.time + DOUBLECLICK_DELAY > time && cmp(pos, this.pos) == 0 && button == this.button }; var lastClick, lastDoubleClick; function clickRepeat(pos, button) { var now = +new Date; if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) { lastClick = lastDoubleClick = null; return "triple" } else if (lastClick && lastClick.compare(now, pos, button)) { lastDoubleClick = new PastClick(now, pos, button); lastClick = null; return "double" } else { lastClick = new PastClick(now, pos, button); lastDoubleClick = null; return "single" } } // A mouse down can be a single click, double click, triple click, // start of selection drag, start of text drag, new cursor // (ctrl-click), rectangle drag (alt-drag), or xwin // middle-click-paste. Or it might be a click on something we should // not interfere with, such as a scrollbar or widget. function onMouseDown(e) { var cm = this, display = cm.display; if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return } display.input.ensurePolled(); display.shift = e.shiftKey; if (eventInWidget(display, e)) { if (!webkit) { // Briefly turn off draggability, to allow widgets to do // normal dragging things. display.scroller.draggable = false; setTimeout(function () { return display.scroller.draggable = true; }, 100); } return } if (clickInGutter(cm, e)) { return } var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single"; window.focus(); // #3261: make sure, that we're not starting a second selection if (button == 1 && cm.state.selectingText) { cm.state.selectingText(e); } if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return } if (button == 1) { if (pos) { leftButtonDown(cm, pos, repeat, e); } else if (e_target(e) == display.scroller) { e_preventDefault(e); } } else if (button == 2) { if (pos) { extendSelection(cm.doc, pos); } setTimeout(function () { return display.input.focus(); }, 20); } else if (button == 3) { if (captureRightClick) { cm.display.input.onContextMenu(e); } else { delayBlurEvent(cm); } } } function handleMappedButton(cm, button, pos, repeat, event) { var name = "Click"; if (repeat == "double") { name = "Double" + name; } else if (repeat == "triple") { name = "Triple" + name; } name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name; return dispatchKey(cm, addModifierNames(name, event), event, function (bound) { if (typeof bound == "string") { bound = commands[bound]; } if (!bound) { return false } var done = false; try { if (cm.isReadOnly()) { cm.state.suppressEdits = true; } done = bound(cm, pos) != Pass; } finally { cm.state.suppressEdits = false; } return done }) } function configureMouse(cm, repeat, event) { var option = cm.getOption("configureMouse"); var value = option ? option(cm, repeat, event) : {}; if (value.unit == null) { var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey; value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line"; } if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; } if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; } if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); } return value } function leftButtonDown(cm, pos, repeat, event) { if (ie) { setTimeout(bind(ensureFocus, cm), 0); } else { cm.curOp.focus = activeElt(); } var behavior = configureMouse(cm, repeat, event); var sel = cm.doc.sel, contained; if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() && repeat == "single" && (contained = sel.contains(pos)) > -1 && (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) && (cmp(contained.to(), pos) > 0 || pos.xRel < 0)) { leftButtonStartDrag(cm, event, pos, behavior); } else { leftButtonSelect(cm, event, pos, behavior); } } // Start a text drag. When it ends, see if any dragging actually // happen, and treat as a click if it didn't. function leftButtonStartDrag(cm, event, pos, behavior) { var display = cm.display, moved = false; var dragEnd = operation(cm, function (e) { if (webkit) { display.scroller.draggable = false; } cm.state.draggingText = false; if (cm.state.delayingBlurEvent) { if (cm.hasFocus()) { cm.state.delayingBlurEvent = false; } else { delayBlurEvent(cm); } } off(display.wrapper.ownerDocument, "mouseup", dragEnd); off(display.wrapper.ownerDocument, "mousemove", mouseMove); off(display.scroller, "dragstart", dragStart); off(display.scroller, "drop", dragEnd); if (!moved) { e_preventDefault(e); if (!behavior.addNew) { extendSelection(cm.doc, pos, null, null, behavior.extend); } // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) if ((webkit && !safari) || ie && ie_version == 9) { setTimeout(function () {display.wrapper.ownerDocument.body.focus({preventScroll: true}); display.input.focus();}, 20); } else { display.input.focus(); } } }); var mouseMove = function(e2) { moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10; }; var dragStart = function () { return moved = true; }; // Let the drag handler handle this. if (webkit) { display.scroller.draggable = true; } cm.state.draggingText = dragEnd; dragEnd.copy = !behavior.moveOnDrag; on(display.wrapper.ownerDocument, "mouseup", dragEnd); on(display.wrapper.ownerDocument, "mousemove", mouseMove); on(display.scroller, "dragstart", dragStart); on(display.scroller, "drop", dragEnd); cm.state.delayingBlurEvent = true; setTimeout(function () { return display.input.focus(); }, 20); // IE's approach to draggable if (display.scroller.dragDrop) { display.scroller.dragDrop(); } } function rangeForUnit(cm, pos, unit) { if (unit == "char") { return new Range(pos, pos) } if (unit == "word") { return cm.findWordAt(pos) } if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) } var result = unit(cm, pos); return new Range(result.from, result.to) } // Normal selection, as opposed to text dragging. function leftButtonSelect(cm, event, start, behavior) { if (ie) { delayBlurEvent(cm); } var display = cm.display, doc = cm.doc; e_preventDefault(event); var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges; if (behavior.addNew && !behavior.extend) { ourIndex = doc.sel.contains(start); if (ourIndex > -1) { ourRange = ranges[ourIndex]; } else { ourRange = new Range(start, start); } } else { ourRange = doc.sel.primary(); ourIndex = doc.sel.primIndex; } if (behavior.unit == "rectangle") { if (!behavior.addNew) { ourRange = new Range(start, start); } start = posFromMouse(cm, event, true, true); ourIndex = -1; } else { var range = rangeForUnit(cm, start, behavior.unit); if (behavior.extend) { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend); } else { ourRange = range; } } if (!behavior.addNew) { ourIndex = 0; setSelection(doc, new Selection([ourRange], 0), sel_mouse); startSel = doc.sel; } else if (ourIndex == -1) { ourIndex = ranges.length; setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex), {scroll: false, origin: "*mouse"}); } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) { setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0), {scroll: false, origin: "*mouse"}); startSel = doc.sel; } else { replaceOneSelection(doc, ourIndex, ourRange, sel_mouse); } var lastPos = start; function extendTo(pos) { if (cmp(lastPos, pos) == 0) { return } lastPos = pos; if (behavior.unit == "rectangle") { var ranges = [], tabSize = cm.options.tabSize; var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize); var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize); var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol); for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); line <= end; line++) { var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize); if (left == right) { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); } else if (text.length > leftPos) { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); } } if (!ranges.length) { ranges.push(new Range(start, start)); } setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), {origin: "*mouse", scroll: false}); cm.scrollIntoView(pos); } else { var oldRange = ourRange; var range = rangeForUnit(cm, pos, behavior.unit); var anchor = oldRange.anchor, head; if (cmp(range.anchor, anchor) > 0) { head = range.head; anchor = minPos(oldRange.from(), range.anchor); } else { head = range.anchor; anchor = maxPos(oldRange.to(), range.head); } var ranges$1 = startSel.ranges.slice(0); ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head)); setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse); } } var editorSize = display.wrapper.getBoundingClientRect(); // Used to ensure timeout re-tries don't fire when another extend // happened in the meantime (clearTimeout isn't reliable -- at // least on Chrome, the timeouts still happen even when cleared, // if the clear happens after their scheduled firing time). var counter = 0; function extend(e) { var curCount = ++counter; var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle"); if (!cur) { return } if (cmp(cur, lastPos) != 0) { cm.curOp.focus = activeElt(); extendTo(cur); var visible = visibleLines(display, doc); if (cur.line >= visible.to || cur.line < visible.from) { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); } } else { var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; if (outside) { setTimeout(operation(cm, function () { if (counter != curCount) { return } display.scroller.scrollTop += outside; extend(e); }), 50); } } } function done(e) { cm.state.selectingText = false; counter = Infinity; // If e is null or undefined we interpret this as someone trying // to explicitly cancel the selection rather than the user // letting go of the mouse button. if (e) { e_preventDefault(e); display.input.focus(); } off(display.wrapper.ownerDocument, "mousemove", move); off(display.wrapper.ownerDocument, "mouseup", up); doc.history.lastSelOrigin = null; } var move = operation(cm, function (e) { if (e.buttons === 0 || !e_button(e)) { done(e); } else { extend(e); } }); var up = operation(cm, done); cm.state.selectingText = up; on(display.wrapper.ownerDocument, "mousemove", move); on(display.wrapper.ownerDocument, "mouseup", up); } // Used when mouse-selecting to adjust the anchor to the proper side // of a bidi jump depending on the visual position of the head. function bidiSimplify(cm, range) { var anchor = range.anchor; var head = range.head; var anchorLine = getLine(cm.doc, anchor.line); if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range } var order = getOrder(anchorLine); if (!order) { return range } var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index]; if (part.from != anchor.ch && part.to != anchor.ch) { return range } var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1); if (boundary == 0 || boundary == order.length) { return range } // Compute the relative visual position of the head compared to the // anchor (<0 is to the left, >0 to the right) var leftSide; if (head.line != anchor.line) { leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0; } else { var headIndex = getBidiPartAt(order, head.ch, head.sticky); var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1); if (headIndex == boundary - 1 || headIndex == boundary) { leftSide = dir < 0; } else { leftSide = dir > 0; } } var usePart = order[boundary + (leftSide ? -1 : 0)]; var from = leftSide == (usePart.level == 1); var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before"; return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head) } // Determines whether an event happened in the gutter, and fires the // handlers for the corresponding event. function gutterEvent(cm, e, type, prevent) { var mX, mY; if (e.touches) { mX = e.touches[0].clientX; mY = e.touches[0].clientY; } else { try { mX = e.clientX; mY = e.clientY; } catch(e$1) { return false } } if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false } if (prevent) { e_preventDefault(e); } var display = cm.display; var lineBox = display.lineDiv.getBoundingClientRect(); if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) } mY -= lineBox.top - display.viewOffset; for (var i = 0; i < cm.display.gutterSpecs.length; ++i) { var g = display.gutters.childNodes[i]; if (g && g.getBoundingClientRect().right >= mX) { var line = lineAtHeight(cm.doc, mY); var gutter = cm.display.gutterSpecs[i]; signal(cm, type, cm, line, gutter.className, e); return e_defaultPrevented(e) } } } function clickInGutter(cm, e) { return gutterEvent(cm, e, "gutterClick", true) } // CONTEXT MENU HANDLING // To make the context menu work, we need to briefly unhide the // textarea (making it as unobtrusive as possible) to let the // right-click take effect on it. function onContextMenu(cm, e) { if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return } if (signalDOMEvent(cm, e, "contextmenu")) { return } if (!captureRightClick) { cm.display.input.onContextMenu(e); } } function contextMenuInGutter(cm, e) { if (!hasHandler(cm, "gutterContextMenu")) { return false } return gutterEvent(cm, e, "gutterContextMenu", false) } function themeChanged(cm) { cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); clearCaches(cm); } var Init = {toString: function(){return "CodeMirror.Init"}}; var defaults = {}; var optionHandlers = {}; function defineOptions(CodeMirror) { var optionHandlers = CodeMirror.optionHandlers; function option(name, deflt, handle, notOnInit) { CodeMirror.defaults[name] = deflt; if (handle) { optionHandlers[name] = notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; } } CodeMirror.defineOption = option; // Passed to option handlers when there is no old value. CodeMirror.Init = Init; // These two are, on init, called from the constructor because they // have to be initialized before the editor can start at all. option("value", "", function (cm, val) { return cm.setValue(val); }, true); option("mode", null, function (cm, val) { cm.doc.modeOption = val; loadMode(cm); }, true); option("indentUnit", 2, loadMode, true); option("indentWithTabs", false); option("smartIndent", true); option("tabSize", 4, function (cm) { resetModeState(cm); clearCaches(cm); regChange(cm); }, true); option("lineSeparator", null, function (cm, val) { cm.doc.lineSep = val; if (!val) { return } var newBreaks = [], lineNo = cm.doc.first; cm.doc.iter(function (line) { for (var pos = 0;;) { var found = line.text.indexOf(val, pos); if (found == -1) { break } pos = found + val.length; newBreaks.push(Pos(lineNo, found)); } lineNo++; }); for (var i = newBreaks.length - 1; i >= 0; i--) { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); } }); option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b\u200e\u200f\u2028\u2029\ufeff\ufff9-\ufffc]/g, function (cm, val, old) { cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); if (old != Init) { cm.refresh(); } }); option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true); option("electricChars", true); option("inputStyle", mobile ? "contenteditable" : "textarea", function () { throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME }, true); option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true); option("autocorrect", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true); option("autocapitalize", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true); option("rtlMoveVisually", !windows); option("wholeLineUpdateBefore", true); option("theme", "default", function (cm) { themeChanged(cm); updateGutters(cm); }, true); option("keyMap", "default", function (cm, val, old) { var next = getKeyMap(val); var prev = old != Init && getKeyMap(old); if (prev && prev.detach) { prev.detach(cm, next); } if (next.attach) { next.attach(cm, prev || null); } }); option("extraKeys", null); option("configureMouse", null); option("lineWrapping", false, wrappingChanged, true); option("gutters", [], function (cm, val) { cm.display.gutterSpecs = getGutters(val, cm.options.lineNumbers); updateGutters(cm); }, true); option("fixedGutter", true, function (cm, val) { cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; cm.refresh(); }, true); option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true); option("scrollbarStyle", "native", function (cm) { initScrollbars(cm); updateScrollbars(cm); cm.display.scrollbars.setScrollTop(cm.doc.scrollTop); cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft); }, true); option("lineNumbers", false, function (cm, val) { cm.display.gutterSpecs = getGutters(cm.options.gutters, val); updateGutters(cm); }, true); option("firstLineNumber", 1, updateGutters, true); option("lineNumberFormatter", function (integer) { return integer; }, updateGutters, true); option("showCursorWhenSelecting", false, updateSelection, true); option("resetSelectionOnContextMenu", true); option("lineWiseCopyCut", true); option("pasteLinesPerSelection", true); option("selectionsMayTouch", false); option("readOnly", false, function (cm, val) { if (val == "nocursor") { onBlur(cm); cm.display.input.blur(); } cm.display.input.readOnlyChanged(val); }); option("screenReaderLabel", null, function (cm, val) { val = (val === '') ? null : val; cm.display.input.screenReaderLabelChanged(val); }); option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true); option("dragDrop", true, dragDropChanged); option("allowDropFileTypes", null); option("cursorBlinkRate", 530); option("cursorScrollMargin", 0); option("cursorHeight", 1, updateSelection, true); option("singleCursorHeightPerLine", true, updateSelection, true); option("workTime", 100); option("workDelay", 100); option("flattenSpans", true, resetModeState, true); option("addModeClass", false, resetModeState, true); option("pollInterval", 100); option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; }); option("historyEventDelay", 1250); option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true); option("maxHighlightLength", 10000, resetModeState, true); option("moveInputWithCursor", true, function (cm, val) { if (!val) { cm.display.input.resetPosition(); } }); option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; }); option("autofocus", null); option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true); option("phrases", null); } function dragDropChanged(cm, value, old) { var wasOn = old && old != Init; if (!value != !wasOn) { var funcs = cm.display.dragFunctions; var toggle = value ? on : off; toggle(cm.display.scroller, "dragstart", funcs.start); toggle(cm.display.scroller, "dragenter", funcs.enter); toggle(cm.display.scroller, "dragover", funcs.over); toggle(cm.display.scroller, "dragleave", funcs.leave); toggle(cm.display.scroller, "drop", funcs.drop); } } function wrappingChanged(cm) { if (cm.options.lineWrapping) { addClass(cm.display.wrapper, "CodeMirror-wrap"); cm.display.sizer.style.minWidth = ""; cm.display.sizerWidth = null; } else { rmClass(cm.display.wrapper, "CodeMirror-wrap"); findMaxLine(cm); } estimateLineHeights(cm); regChange(cm); clearCaches(cm); setTimeout(function () { return updateScrollbars(cm); }, 100); } // A CodeMirror instance represents an editor. This is the object // that user code is usually dealing with. function CodeMirror(place, options) { var this$1 = this; if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) } this.options = options = options ? copyObj(options) : {}; // Determine effective options based on given values and defaults. copyObj(defaults, options, false); var doc = options.value; if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); } else if (options.mode) { doc.modeOption = options.mode; } this.doc = doc; var input = new CodeMirror.inputStyles[options.inputStyle](this); var display = this.display = new Display(place, doc, input, options); display.wrapper.CodeMirror = this; themeChanged(this); if (options.lineWrapping) { this.display.wrapper.className += " CodeMirror-wrap"; } initScrollbars(this); this.state = { keyMaps: [], // stores maps added by addKeyMap overlays: [], // highlighting overlays, as added by addOverlay modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info overwrite: false, delayingBlurEvent: false, focused: false, suppressEdits: false, // used to disable editing during key handlers when in readOnly mode pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll selectingText: false, draggingText: false, highlight: new Delayed(), // stores highlight worker timeout keySeq: null, // Unfinished key sequence specialChars: null }; if (options.autofocus && !mobile) { display.input.focus(); } // Override magic textarea content restore that IE sometimes does // on our hidden textarea on reload if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); } registerEventHandlers(this); ensureGlobalHandlers(); startOperation(this); this.curOp.forceUpdate = true; attachDoc(this, doc); if ((options.autofocus && !mobile) || this.hasFocus()) { setTimeout(function () { if (this$1.hasFocus() && !this$1.state.focused) { onFocus(this$1); } }, 20); } else { onBlur(this); } for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt)) { optionHandlers[opt](this, options[opt], Init); } } maybeUpdateLineNumberWidth(this); if (options.finishInit) { options.finishInit(this); } for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this); } endOperation(this); // Suppress optimizelegibility in Webkit, since it breaks text // measuring on line wrapping boundaries. if (webkit && options.lineWrapping && getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") { display.lineDiv.style.textRendering = "auto"; } } // The default configuration options. CodeMirror.defaults = defaults; // Functions to run when options are changed. CodeMirror.optionHandlers = optionHandlers; // Attach the necessary event handlers when initializing the editor function registerEventHandlers(cm) { var d = cm.display; on(d.scroller, "mousedown", operation(cm, onMouseDown)); // Older IE's will not fire a second mousedown for a double click if (ie && ie_version < 11) { on(d.scroller, "dblclick", operation(cm, function (e) { if (signalDOMEvent(cm, e)) { return } var pos = posFromMouse(cm, e); if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return } e_preventDefault(e); var word = cm.findWordAt(pos); extendSelection(cm.doc, word.anchor, word.head); })); } else { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); } // Some browsers fire contextmenu *after* opening the menu, at // which point we can't mess with it anymore. Context menu is // handled in onMouseDown for these browsers. on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }); on(d.input.getField(), "contextmenu", function (e) { if (!d.scroller.contains(e.target)) { onContextMenu(cm, e); } }); // Used to suppress mouse event handling when a touch happens var touchFinished, prevTouch = {end: 0}; function finishTouch() { if (d.activeTouch) { touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000); prevTouch = d.activeTouch; prevTouch.end = +new Date; } } function isMouseLikeTouchEvent(e) { if (e.touches.length != 1) { return false } var touch = e.touches[0]; return touch.radiusX <= 1 && touch.radiusY <= 1 } function farAway(touch, other) { if (other.left == null) { return true } var dx = other.left - touch.left, dy = other.top - touch.top; return dx * dx + dy * dy > 20 * 20 } on(d.scroller, "touchstart", function (e) { if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) { d.input.ensurePolled(); clearTimeout(touchFinished); var now = +new Date; d.activeTouch = {start: now, moved: false, prev: now - prevTouch.end <= 300 ? prevTouch : null}; if (e.touches.length == 1) { d.activeTouch.left = e.touches[0].pageX; d.activeTouch.top = e.touches[0].pageY; } } }); on(d.scroller, "touchmove", function () { if (d.activeTouch) { d.activeTouch.moved = true; } }); on(d.scroller, "touchend", function (e) { var touch = d.activeTouch; if (touch && !eventInWidget(d, e) && touch.left != null && !touch.moved && new Date - touch.start < 300) { var pos = cm.coordsChar(d.activeTouch, "page"), range; if (!touch.prev || farAway(touch, touch.prev)) // Single tap { range = new Range(pos, pos); } else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap { range = cm.findWordAt(pos); } else // Triple tap { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); } cm.setSelection(range.anchor, range.head); cm.focus(); e_preventDefault(e); } finishTouch(); }); on(d.scroller, "touchcancel", finishTouch); // Sync scrolling between fake scrollbars and real scrollable // area, ensure viewport is updated when scrolling. on(d.scroller, "scroll", function () { if (d.scroller.clientHeight) { updateScrollTop(cm, d.scroller.scrollTop); setScrollLeft(cm, d.scroller.scrollLeft, true); signal(cm, "scroll", cm); } }); // Listen to wheel events in order to try and update the viewport on time. on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); }); on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); }); // Prevent wrapper from ever scrolling on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); d.dragFunctions = { enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }}, over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }}, start: function (e) { return onDragStart(cm, e); }, drop: operation(cm, onDrop), leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }} }; var inp = d.input.getField(); on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); }); on(inp, "keydown", operation(cm, onKeyDown)); on(inp, "keypress", operation(cm, onKeyPress)); on(inp, "focus", function (e) { return onFocus(cm, e); }); on(inp, "blur", function (e) { return onBlur(cm, e); }); } var initHooks = []; CodeMirror.defineInitHook = function (f) { return initHooks.push(f); }; // Indent the given line. The how parameter can be "smart", // "add"/null, "subtract", or "prev". When aggressive is false // (typically set to true for forced single-line indents), empty // lines are not indented, and places where the mode returns Pass // are left alone. function indentLine(cm, n, how, aggressive) { var doc = cm.doc, state; if (how == null) { how = "add"; } if (how == "smart") { // Fall back to "prev" when the mode doesn't have an indentation // method. if (!doc.mode.indent) { how = "prev"; } else { state = getContextBefore(cm, n).state; } } var tabSize = cm.options.tabSize; var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); if (line.stateAfter) { line.stateAfter = null; } var curSpaceString = line.text.match(/^\s*/)[0], indentation; if (!aggressive && !/\S/.test(line.text)) { indentation = 0; how = "not"; } else if (how == "smart") { indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); if (indentation == Pass || indentation > 150) { if (!aggressive) { return } how = "prev"; } } if (how == "prev") { if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); } else { indentation = 0; } } else if (how == "add") { indentation = curSpace + cm.options.indentUnit; } else if (how == "subtract") { indentation = curSpace - cm.options.indentUnit; } else if (typeof how == "number") { indentation = curSpace + how; } indentation = Math.max(0, indentation); var indentString = "", pos = 0; if (cm.options.indentWithTabs) { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} } if (pos < indentation) { indentString += spaceStr(indentation - pos); } if (indentString != curSpaceString) { replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); line.stateAfter = null; return true } else { // Ensure that, if the cursor was in the whitespace at the start // of the line, it is moved to the end of that space. for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) { var range = doc.sel.ranges[i$1]; if (range.head.line == n && range.head.ch < curSpaceString.length) { var pos$1 = Pos(n, curSpaceString.length); replaceOneSelection(doc, i$1, new Range(pos$1, pos$1)); break } } } } // This will be set to a {lineWise: bool, text: [string]} object, so // that, when pasting, we know what kind of selections the copied // text was made out of. var lastCopied = null; function setLastCopied(newLastCopied) { lastCopied = newLastCopied; } function applyTextInput(cm, inserted, deleted, sel, origin) { var doc = cm.doc; cm.display.shift = false; if (!sel) { sel = doc.sel; } var recent = +new Date - 200; var paste = origin == "paste" || cm.state.pasteIncoming > recent; var textLines = splitLinesAuto(inserted), multiPaste = null; // When pasting N lines into N selections, insert one line per selection if (paste && sel.ranges.length > 1) { if (lastCopied && lastCopied.text.join("\n") == inserted) { if (sel.ranges.length % lastCopied.text.length == 0) { multiPaste = []; for (var i = 0; i < lastCopied.text.length; i++) { multiPaste.push(doc.splitLines(lastCopied.text[i])); } } } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) { multiPaste = map(textLines, function (l) { return [l]; }); } } var updateInput = cm.curOp.updateInput; // Normal behavior is to insert the new text into every selection for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) { var range = sel.ranges[i$1]; var from = range.from(), to = range.to(); if (range.empty()) { if (deleted && deleted > 0) // Handle deletion { from = Pos(from.line, from.ch - deleted); } else if (cm.state.overwrite && !paste) // Handle overwrite { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); } else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == textLines.join("\n")) { from = to = Pos(from.line, 0); } } var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines, origin: origin || (paste ? "paste" : cm.state.cutIncoming > recent ? "cut" : "+input")}; makeChange(cm.doc, changeEvent); signalLater(cm, "inputRead", cm, changeEvent); } if (inserted && !paste) { triggerElectric(cm, inserted); } ensureCursorVisible(cm); if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; } cm.curOp.typing = true; cm.state.pasteIncoming = cm.state.cutIncoming = -1; } function handlePaste(e, cm) { var pasted = e.clipboardData && e.clipboardData.getData("Text"); if (pasted) { e.preventDefault(); if (!cm.isReadOnly() && !cm.options.disableInput) { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }); } return true } } function triggerElectric(cm, inserted) { // When an 'electric' character is inserted, immediately trigger a reindent if (!cm.options.electricChars || !cm.options.smartIndent) { return } var sel = cm.doc.sel; for (var i = sel.ranges.length - 1; i >= 0; i--) { var range = sel.ranges[i]; if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue } var mode = cm.getModeAt(range.head); var indented = false; if (mode.electricChars) { for (var j = 0; j < mode.electricChars.length; j++) { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { indented = indentLine(cm, range.head.line, "smart"); break } } } else if (mode.electricInput) { if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch))) { indented = indentLine(cm, range.head.line, "smart"); } } if (indented) { signalLater(cm, "electricInput", cm, range.head.line); } } } function copyableRanges(cm) { var text = [], ranges = []; for (var i = 0; i < cm.doc.sel.ranges.length; i++) { var line = cm.doc.sel.ranges[i].head.line; var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}; ranges.push(lineRange); text.push(cm.getRange(lineRange.anchor, lineRange.head)); } return {text: text, ranges: ranges} } function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) { field.setAttribute("autocorrect", autocorrect ? "" : "off"); field.setAttribute("autocapitalize", autocapitalize ? "" : "off"); field.setAttribute("spellcheck", !!spellcheck); } function hiddenTextarea() { var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; min-height: 1em; outline: none"); var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); // The textarea is kept positioned near the cursor to prevent the // fact that it'll be scrolled into view on input from scrolling // our fake cursor out of view. On webkit, when wrap=off, paste is // very slow. So make the area wide instead. if (webkit) { te.style.width = "1000px"; } else { te.setAttribute("wrap", "off"); } // If border: 0; -- iOS fails to open keyboard (issue #1287) if (ios) { te.style.border = "1px solid black"; } disableBrowserMagic(te); return div } // The publicly visible API. Note that methodOp(f) means // 'wrap f in an operation, performed on its `this` parameter'. // This is not the complete set of editor methods. Most of the // methods defined on the Doc type are also injected into // CodeMirror.prototype, for backwards compatibility and // convenience. function addEditorMethods(CodeMirror) { var optionHandlers = CodeMirror.optionHandlers; var helpers = CodeMirror.helpers = {}; CodeMirror.prototype = { constructor: CodeMirror, focus: function(){window.focus(); this.display.input.focus();}, setOption: function(option, value) { var options = this.options, old = options[option]; if (options[option] == value && option != "mode") { return } options[option] = value; if (optionHandlers.hasOwnProperty(option)) { operation(this, optionHandlers[option])(this, value, old); } signal(this, "optionChange", this, option); }, getOption: function(option) {return this.options[option]}, getDoc: function() {return this.doc}, addKeyMap: function(map, bottom) { this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)); }, removeKeyMap: function(map) { var maps = this.state.keyMaps; for (var i = 0; i < maps.length; ++i) { if (maps[i] == map || maps[i].name == map) { maps.splice(i, 1); return true } } }, addOverlay: methodOp(function(spec, options) { var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); if (mode.startState) { throw new Error("Overlays may not be stateful.") } insertSorted(this.state.overlays, {mode: mode, modeSpec: spec, opaque: options && options.opaque, priority: (options && options.priority) || 0}, function (overlay) { return overlay.priority; }); this.state.modeGen++; regChange(this); }), removeOverlay: methodOp(function(spec) { var overlays = this.state.overlays; for (var i = 0; i < overlays.length; ++i) { var cur = overlays[i].modeSpec; if (cur == spec || typeof spec == "string" && cur.name == spec) { overlays.splice(i, 1); this.state.modeGen++; regChange(this); return } } }), indentLine: methodOp(function(n, dir, aggressive) { if (typeof dir != "string" && typeof dir != "number") { if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev"; } else { dir = dir ? "add" : "subtract"; } } if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); } }), indentSelection: methodOp(function(how) { var ranges = this.doc.sel.ranges, end = -1; for (var i = 0; i < ranges.length; i++) { var range = ranges[i]; if (!range.empty()) { var from = range.from(), to = range.to(); var start = Math.max(end, from.line); end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1; for (var j = start; j < end; ++j) { indentLine(this, j, how); } var newRanges = this.doc.sel.ranges; if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) { replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); } } else if (range.head.line > end) { indentLine(this, range.head.line, how, true); end = range.head.line; if (i == this.doc.sel.primIndex) { ensureCursorVisible(this); } } } }), // Fetch the parser token for a given character. Useful for hacks // that want to inspect the mode state (say, for completion). getTokenAt: function(pos, precise) { return takeToken(this, pos, precise) }, getLineTokens: function(line, precise) { return takeToken(this, Pos(line), precise, true) }, getTokenTypeAt: function(pos) { pos = clipPos(this.doc, pos); var styles = getLineStyles(this, getLine(this.doc, pos.line)); var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; var type; if (ch == 0) { type = styles[2]; } else { for (;;) { var mid = (before + after) >> 1; if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; } else if (styles[mid * 2 + 1] < ch) { before = mid + 1; } else { type = styles[mid * 2 + 2]; break } } } var cut = type ? type.indexOf("overlay ") : -1; return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1) }, getModeAt: function(pos) { var mode = this.doc.mode; if (!mode.innerMode) { return mode } return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode }, getHelper: function(pos, type) { return this.getHelpers(pos, type)[0] }, getHelpers: function(pos, type) { var found = []; if (!helpers.hasOwnProperty(type)) { return found } var help = helpers[type], mode = this.getModeAt(pos); if (typeof mode[type] == "string") { if (help[mode[type]]) { found.push(help[mode[type]]); } } else if (mode[type]) { for (var i = 0; i < mode[type].length; i++) { var val = help[mode[type][i]]; if (val) { found.push(val); } } } else if (mode.helperType && help[mode.helperType]) { found.push(help[mode.helperType]); } else if (help[mode.name]) { found.push(help[mode.name]); } for (var i$1 = 0; i$1 < help._global.length; i$1++) { var cur = help._global[i$1]; if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) { found.push(cur.val); } } return found }, getStateAfter: function(line, precise) { var doc = this.doc; line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); return getContextBefore(this, line + 1, precise).state }, cursorCoords: function(start, mode) { var pos, range = this.doc.sel.primary(); if (start == null) { pos = range.head; } else if (typeof start == "object") { pos = clipPos(this.doc, start); } else { pos = start ? range.from() : range.to(); } return cursorCoords(this, pos, mode || "page") }, charCoords: function(pos, mode) { return charCoords(this, clipPos(this.doc, pos), mode || "page") }, coordsChar: function(coords, mode) { coords = fromCoordSystem(this, coords, mode || "page"); return coordsChar(this, coords.left, coords.top) }, lineAtHeight: function(height, mode) { height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; return lineAtHeight(this.doc, height + this.display.viewOffset) }, heightAtLine: function(line, mode, includeWidgets) { var end = false, lineObj; if (typeof line == "number") { var last = this.doc.first + this.doc.size - 1; if (line < this.doc.first) { line = this.doc.first; } else if (line > last) { line = last; end = true; } lineObj = getLine(this.doc, line); } else { lineObj = line; } return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top + (end ? this.doc.height - heightAtLine(lineObj) : 0) }, defaultTextHeight: function() { return textHeight(this.display) }, defaultCharWidth: function() { return charWidth(this.display) }, getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}}, addWidget: function(pos, node, scroll, vert, horiz) { var display = this.display; pos = cursorCoords(this, clipPos(this.doc, pos)); var top = pos.bottom, left = pos.left; node.style.position = "absolute"; node.setAttribute("cm-ignore-events", "true"); this.display.input.setUneditable(node); display.sizer.appendChild(node); if (vert == "over") { top = pos.top; } else if (vert == "above" || vert == "near") { var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); // Default to positioning above (if specified and possible); otherwise default to positioning below if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) { top = pos.top - node.offsetHeight; } else if (pos.bottom + node.offsetHeight <= vspace) { top = pos.bottom; } if (left + node.offsetWidth > hspace) { left = hspace - node.offsetWidth; } } node.style.top = top + "px"; node.style.left = node.style.right = ""; if (horiz == "right") { left = display.sizer.clientWidth - node.offsetWidth; node.style.right = "0px"; } else { if (horiz == "left") { left = 0; } else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; } node.style.left = left + "px"; } if (scroll) { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); } }, triggerOnKeyDown: methodOp(onKeyDown), triggerOnKeyPress: methodOp(onKeyPress), triggerOnKeyUp: onKeyUp, triggerOnMouseDown: methodOp(onMouseDown), execCommand: function(cmd) { if (commands.hasOwnProperty(cmd)) { return commands[cmd].call(null, this) } }, triggerElectric: methodOp(function(text) { triggerElectric(this, text); }), findPosH: function(from, amount, unit, visually) { var dir = 1; if (amount < 0) { dir = -1; amount = -amount; } var cur = clipPos(this.doc, from); for (var i = 0; i < amount; ++i) { cur = findPosH(this.doc, cur, dir, unit, visually); if (cur.hitSide) { break } } return cur }, moveH: methodOp(function(dir, unit) { var this$1 = this; this.extendSelectionsBy(function (range) { if (this$1.display.shift || this$1.doc.extend || range.empty()) { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) } else { return dir < 0 ? range.from() : range.to() } }, sel_move); }), deleteH: methodOp(function(dir, unit) { var sel = this.doc.sel, doc = this.doc; if (sel.somethingSelected()) { doc.replaceSelection("", null, "+delete"); } else { deleteNearSelection(this, function (range) { var other = findPosH(doc, range.head, dir, unit, false); return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other} }); } }), findPosV: function(from, amount, unit, goalColumn) { var dir = 1, x = goalColumn; if (amount < 0) { dir = -1; amount = -amount; } var cur = clipPos(this.doc, from); for (var i = 0; i < amount; ++i) { var coords = cursorCoords(this, cur, "div"); if (x == null) { x = coords.left; } else { coords.left = x; } cur = findPosV(this, coords, dir, unit); if (cur.hitSide) { break } } return cur }, moveV: methodOp(function(dir, unit) { var this$1 = this; var doc = this.doc, goals = []; var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected(); doc.extendSelectionsBy(function (range) { if (collapse) { return dir < 0 ? range.from() : range.to() } var headPos = cursorCoords(this$1, range.head, "div"); if (range.goalColumn != null) { headPos.left = range.goalColumn; } goals.push(headPos.left); var pos = findPosV(this$1, headPos, dir, unit); if (unit == "page" && range == doc.sel.primary()) { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); } return pos }, sel_move); if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++) { doc.sel.ranges[i].goalColumn = goals[i]; } } }), // Find the word at the given position (as returned by coordsChar). findWordAt: function(pos) { var doc = this.doc, line = getLine(doc, pos.line).text; var start = pos.ch, end = pos.ch; if (line) { var helper = this.getHelper(pos, "wordChars"); if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end; } var startChar = line.charAt(start); var check = isWordChar(startChar, helper) ? function (ch) { return isWordChar(ch, helper); } : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); } : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); }; while (start > 0 && check(line.charAt(start - 1))) { --start; } while (end < line.length && check(line.charAt(end))) { ++end; } } return new Range(Pos(pos.line, start), Pos(pos.line, end)) }, toggleOverwrite: function(value) { if (value != null && value == this.state.overwrite) { return } if (this.state.overwrite = !this.state.overwrite) { addClass(this.display.cursorDiv, "CodeMirror-overwrite"); } else { rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); } signal(this, "overwriteToggle", this, this.state.overwrite); }, hasFocus: function() { return this.display.input.getField() == activeElt() }, isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) }, scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }), getScrollInfo: function() { var scroller = this.display.scroller; return {left: scroller.scrollLeft, top: scroller.scrollTop, height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, clientHeight: displayHeight(this), clientWidth: displayWidth(this)} }, scrollIntoView: methodOp(function(range, margin) { if (range == null) { range = {from: this.doc.sel.primary().head, to: null}; if (margin == null) { margin = this.options.cursorScrollMargin; } } else if (typeof range == "number") { range = {from: Pos(range, 0), to: null}; } else if (range.from == null) { range = {from: range, to: null}; } if (!range.to) { range.to = range.from; } range.margin = margin || 0; if (range.from.line != null) { scrollToRange(this, range); } else { scrollToCoordsRange(this, range.from, range.to, range.margin); } }), setSize: methodOp(function(width, height) { var this$1 = this; var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; }; if (width != null) { this.display.wrapper.style.width = interpret(width); } if (height != null) { this.display.wrapper.style.height = interpret(height); } if (this.options.lineWrapping) { clearLineMeasurementCache(this); } var lineNo = this.display.viewFrom; this.doc.iter(lineNo, this.display.viewTo, function (line) { if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } } ++lineNo; }); this.curOp.forceUpdate = true; signal(this, "refresh", this); }), operation: function(f){return runInOp(this, f)}, startOperation: function(){return startOperation(this)}, endOperation: function(){return endOperation(this)}, refresh: methodOp(function() { var oldHeight = this.display.cachedTextHeight; regChange(this); this.curOp.forceUpdate = true; clearCaches(this); scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop); updateGutterSpace(this.display); if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping) { estimateLineHeights(this); } signal(this, "refresh", this); }), swapDoc: methodOp(function(doc) { var old = this.doc; old.cm = null; // Cancel the current text selection if any (#5821) if (this.state.selectingText) { this.state.selectingText(); } attachDoc(this, doc); clearCaches(this); this.display.input.reset(); scrollToCoords(this, doc.scrollLeft, doc.scrollTop); this.curOp.forceScroll = true; signalLater(this, "swapDoc", this, old); return old }), phrase: function(phraseText) { var phrases = this.options.phrases; return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText }, getInputField: function(){return this.display.input.getField()}, getWrapperElement: function(){return this.display.wrapper}, getScrollerElement: function(){return this.display.scroller}, getGutterElement: function(){return this.display.gutters} }; eventMixin(CodeMirror); CodeMirror.registerHelper = function(type, name, value) { if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; } helpers[type][name] = value; }; CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { CodeMirror.registerHelper(type, name, value); helpers[type]._global.push({pred: predicate, val: value}); }; } // Used for horizontal relative motion. Dir is -1 or 1 (left or // right), unit can be "codepoint", "char", "column" (like char, but // doesn't cross line boundaries), "word" (across next word), or // "group" (to the start of next group of word or // non-word-non-whitespace chars). The visually param controls // whether, in right-to-left text, direction 1 means to move towards // the next index in the string, or towards the character to the right // of the current position. The resulting position will have a // hitSide=true property if it reached the end of the document. function findPosH(doc, pos, dir, unit, visually) { var oldPos = pos; var origDir = dir; var lineObj = getLine(doc, pos.line); var lineDir = visually && doc.direction == "rtl" ? -dir : dir; function findNextLine() { var l = pos.line + lineDir; if (l < doc.first || l >= doc.first + doc.size) { return false } pos = new Pos(l, pos.ch, pos.sticky); return lineObj = getLine(doc, l) } function moveOnce(boundToLine) { var next; if (unit == "codepoint") { var ch = lineObj.text.charCodeAt(pos.ch + (dir > 0 ? 0 : -1)); if (isNaN(ch)) { next = null; } else { var astral = dir > 0 ? ch >= 0xD800 && ch < 0xDC00 : ch >= 0xDC00 && ch < 0xDFFF; next = new Pos(pos.line, Math.max(0, Math.min(lineObj.text.length, pos.ch + dir * (astral ? 2 : 1))), -dir); } } else if (visually) { next = moveVisually(doc.cm, lineObj, pos, dir); } else { next = moveLogically(lineObj, pos, dir); } if (next == null) { if (!boundToLine && findNextLine()) { pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir); } else { return false } } else { pos = next; } return true } if (unit == "char" || unit == "codepoint") { moveOnce(); } else if (unit == "column") { moveOnce(true); } else if (unit == "word" || unit == "group") { var sawType = null, group = unit == "group"; var helper = doc.cm && doc.cm.getHelper(pos, "wordChars"); for (var first = true;; first = false) { if (dir < 0 && !moveOnce(!first)) { break } var cur = lineObj.text.charAt(pos.ch) || "\n"; var type = isWordChar(cur, helper) ? "w" : group && cur == "\n" ? "n" : !group || /\s/.test(cur) ? null : "p"; if (group && !first && !type) { type = "s"; } if (sawType && sawType != type) { if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after";} break } if (type) { sawType = type; } if (dir > 0 && !moveOnce(!first)) { break } } } var result = skipAtomic(doc, pos, oldPos, origDir, true); if (equalCursorPos(oldPos, result)) { result.hitSide = true; } return result } // For relative vertical movement. Dir may be -1 or 1. Unit can be // "page" or "line". The resulting position will have a hitSide=true // property if it reached the end of the document. function findPosV(cm, pos, dir, unit) { var doc = cm.doc, x = pos.left, y; if (unit == "page") { var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3); y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount; } else if (unit == "line") { y = dir > 0 ? pos.bottom + 3 : pos.top - 3; } var target; for (;;) { target = coordsChar(cm, x, y); if (!target.outside) { break } if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break } y += dir * 5; } return target } // CONTENTEDITABLE INPUT STYLE var ContentEditableInput = function(cm) { this.cm = cm; this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null; this.polling = new Delayed(); this.composing = null; this.gracePeriod = false; this.readDOMTimeout = null; }; ContentEditableInput.prototype.init = function (display) { var this$1 = this; var input = this, cm = input.cm; var div = input.div = display.lineDiv; div.contentEditable = true; disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize); function belongsToInput(e) { for (var t = e.target; t; t = t.parentNode) { if (t == div) { return true } if (/\bCodeMirror-(?:line)?widget\b/.test(t.className)) { break } } return false } on(div, "paste", function (e) { if (!belongsToInput(e) || signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } // IE doesn't fire input events, so we schedule a read for the pasted content in this way if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); } }); on(div, "compositionstart", function (e) { this$1.composing = {data: e.data, done: false}; }); on(div, "compositionupdate", function (e) { if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; } }); on(div, "compositionend", function (e) { if (this$1.composing) { if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); } this$1.composing.done = true; } }); on(div, "touchstart", function () { return input.forceCompositionEnd(); }); on(div, "input", function () { if (!this$1.composing) { this$1.readFromDOMSoon(); } }); function onCopyCut(e) { if (!belongsToInput(e) || signalDOMEvent(cm, e)) { return } if (cm.somethingSelected()) { setLastCopied({lineWise: false, text: cm.getSelections()}); if (e.type == "cut") { cm.replaceSelection("", null, "cut"); } } else if (!cm.options.lineWiseCopyCut) { return } else { var ranges = copyableRanges(cm); setLastCopied({lineWise: true, text: ranges.text}); if (e.type == "cut") { cm.operation(function () { cm.setSelections(ranges.ranges, 0, sel_dontScroll); cm.replaceSelection("", null, "cut"); }); } } if (e.clipboardData) { e.clipboardData.clearData(); var content = lastCopied.text.join("\n"); // iOS exposes the clipboard API, but seems to discard content inserted into it e.clipboardData.setData("Text", content); if (e.clipboardData.getData("Text") == content) { e.preventDefault(); return } } // Old-fashioned briefly-focus-a-textarea hack var kludge = hiddenTextarea(), te = kludge.firstChild; cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild); te.value = lastCopied.text.join("\n"); var hadFocus = activeElt(); selectInput(te); setTimeout(function () { cm.display.lineSpace.removeChild(kludge); hadFocus.focus(); if (hadFocus == div) { input.showPrimarySelection(); } }, 50); } on(div, "copy", onCopyCut); on(div, "cut", onCopyCut); }; ContentEditableInput.prototype.screenReaderLabelChanged = function (label) { // Label for screenreaders, accessibility if(label) { this.div.setAttribute('aria-label', label); } else { this.div.removeAttribute('aria-label'); } }; ContentEditableInput.prototype.prepareSelection = function () { var result = prepareSelection(this.cm, false); result.focus = activeElt() == this.div; return result }; ContentEditableInput.prototype.showSelection = function (info, takeFocus) { if (!info || !this.cm.display.view.length) { return } if (info.focus || takeFocus) { this.showPrimarySelection(); } this.showMultipleSelections(info); }; ContentEditableInput.prototype.getSelection = function () { return this.cm.display.wrapper.ownerDocument.getSelection() }; ContentEditableInput.prototype.showPrimarySelection = function () { var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary(); var from = prim.from(), to = prim.to(); if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) { sel.removeAllRanges(); return } var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset); if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && cmp(minPos(curAnchor, curFocus), from) == 0 && cmp(maxPos(curAnchor, curFocus), to) == 0) { return } var view = cm.display.view; var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) || {node: view[0].measure.map[2], offset: 0}; var end = to.line < cm.display.viewTo && posToDOM(cm, to); if (!end) { var measure = view[view.length - 1].measure; var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map; end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}; } if (!start || !end) { sel.removeAllRanges(); return } var old = sel.rangeCount && sel.getRangeAt(0), rng; try { rng = range(start.node, start.offset, end.offset, end.node); } catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible if (rng) { if (!gecko && cm.state.focused) { sel.collapse(start.node, start.offset); if (!rng.collapsed) { sel.removeAllRanges(); sel.addRange(rng); } } else { sel.removeAllRanges(); sel.addRange(rng); } if (old && sel.anchorNode == null) { sel.addRange(old); } else if (gecko) { this.startGracePeriod(); } } this.rememberSelection(); }; ContentEditableInput.prototype.startGracePeriod = function () { var this$1 = this; clearTimeout(this.gracePeriod); this.gracePeriod = setTimeout(function () { this$1.gracePeriod = false; if (this$1.selectionChanged()) { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); } }, 20); }; ContentEditableInput.prototype.showMultipleSelections = function (info) { removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors); removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection); }; ContentEditableInput.prototype.rememberSelection = function () { var sel = this.getSelection(); this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset; this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset; }; ContentEditableInput.prototype.selectionInEditor = function () { var sel = this.getSelection(); if (!sel.rangeCount) { return false } var node = sel.getRangeAt(0).commonAncestorContainer; return contains(this.div, node) }; ContentEditableInput.prototype.focus = function () { if (this.cm.options.readOnly != "nocursor") { if (!this.selectionInEditor() || activeElt() != this.div) { this.showSelection(this.prepareSelection(), true); } this.div.focus(); } }; ContentEditableInput.prototype.blur = function () { this.div.blur(); }; ContentEditableInput.prototype.getField = function () { return this.div }; ContentEditableInput.prototype.supportsTouch = function () { return true }; ContentEditableInput.prototype.receivedFocus = function () { var this$1 = this; var input = this; if (this.selectionInEditor()) { setTimeout(function () { return this$1.pollSelection(); }, 20); } else { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); } function poll() { if (input.cm.state.focused) { input.pollSelection(); input.polling.set(input.cm.options.pollInterval, poll); } } this.polling.set(this.cm.options.pollInterval, poll); }; ContentEditableInput.prototype.selectionChanged = function () { var sel = this.getSelection(); return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset || sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset }; ContentEditableInput.prototype.pollSelection = function () { if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return } var sel = this.getSelection(), cm = this.cm; // On Android Chrome (version 56, at least), backspacing into an // uneditable block element will put the cursor in that element, // and then, because it's not editable, hide the virtual keyboard. // Because Android doesn't allow us to actually detect backspace // presses in a sane way, this code checks for when that happens // and simulates a backspace press in this case. if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) { this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs}); this.blur(); this.focus(); return } if (this.composing) { return } this.rememberSelection(); var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); var head = domToPos(cm, sel.focusNode, sel.focusOffset); if (anchor && head) { runInOp(cm, function () { setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll); if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; } }); } }; ContentEditableInput.prototype.pollContent = function () { if (this.readDOMTimeout != null) { clearTimeout(this.readDOMTimeout); this.readDOMTimeout = null; } var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary(); var from = sel.from(), to = sel.to(); if (from.ch == 0 && from.line > cm.firstLine()) { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); } if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine()) { to = Pos(to.line + 1, 0); } if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false } var fromIndex, fromLine, fromNode; if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) { fromLine = lineNo(display.view[0].line); fromNode = display.view[0].node; } else { fromLine = lineNo(display.view[fromIndex].line); fromNode = display.view[fromIndex - 1].node.nextSibling; } var toIndex = findViewIndex(cm, to.line); var toLine, toNode; if (toIndex == display.view.length - 1) { toLine = display.viewTo - 1; toNode = display.lineDiv.lastChild; } else { toLine = lineNo(display.view[toIndex + 1].line) - 1; toNode = display.view[toIndex + 1].node.previousSibling; } if (!fromNode) { return false } var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)); var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)); while (newText.length > 1 && oldText.length > 1) { if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; } else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; } else { break } } var cutFront = 0, cutEnd = 0; var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length); while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) { ++cutFront; } var newBot = lst(newText), oldBot = lst(oldText); var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), oldBot.length - (oldText.length == 1 ? cutFront : 0)); while (cutEnd < maxCutEnd && newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { ++cutEnd; } // Try to move start of change to start of selection if ambiguous if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) { while (cutFront && cutFront > from.ch && newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { cutFront--; cutEnd++; } } newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, ""); newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, ""); var chFrom = Pos(fromLine, cutFront); var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0); if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) { replaceRange(cm.doc, newText, chFrom, chTo, "+input"); return true } }; ContentEditableInput.prototype.ensurePolled = function () { this.forceCompositionEnd(); }; ContentEditableInput.prototype.reset = function () { this.forceCompositionEnd(); }; ContentEditableInput.prototype.forceCompositionEnd = function () { if (!this.composing) { return } clearTimeout(this.readDOMTimeout); this.composing = null; this.updateFromDOM(); this.div.blur(); this.div.focus(); }; ContentEditableInput.prototype.readFromDOMSoon = function () { var this$1 = this; if (this.readDOMTimeout != null) { return } this.readDOMTimeout = setTimeout(function () { this$1.readDOMTimeout = null; if (this$1.composing) { if (this$1.composing.done) { this$1.composing = null; } else { return } } this$1.updateFromDOM(); }, 80); }; ContentEditableInput.prototype.updateFromDOM = function () { var this$1 = this; if (this.cm.isReadOnly() || !this.pollContent()) { runInOp(this.cm, function () { return regChange(this$1.cm); }); } }; ContentEditableInput.prototype.setUneditable = function (node) { node.contentEditable = "false"; }; ContentEditableInput.prototype.onKeyPress = function (e) { if (e.charCode == 0 || this.composing) { return } e.preventDefault(); if (!this.cm.isReadOnly()) { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); } }; ContentEditableInput.prototype.readOnlyChanged = function (val) { this.div.contentEditable = String(val != "nocursor"); }; ContentEditableInput.prototype.onContextMenu = function () {}; ContentEditableInput.prototype.resetPosition = function () {}; ContentEditableInput.prototype.needsContentAttribute = true; function posToDOM(cm, pos) { var view = findViewForLine(cm, pos.line); if (!view || view.hidden) { return null } var line = getLine(cm.doc, pos.line); var info = mapFromLineView(view, line, pos.line); var order = getOrder(line, cm.doc.direction), side = "left"; if (order) { var partPos = getBidiPartAt(order, pos.ch); side = partPos % 2 ? "right" : "left"; } var result = nodeAndOffsetInLineMap(info.map, pos.ch, side); result.offset = result.collapse == "right" ? result.end : result.start; return result } function isInGutter(node) { for (var scan = node; scan; scan = scan.parentNode) { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } } return false } function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos } function domTextBetween(cm, from, to, fromLine, toLine) { var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false; function recognizeMarker(id) { return function (marker) { return marker.id == id; } } function close() { if (closing) { text += lineSep; if (extraLinebreak) { text += lineSep; } closing = extraLinebreak = false; } } function addText(str) { if (str) { close(); text += str; } } function walk(node) { if (node.nodeType == 1) { var cmText = node.getAttribute("cm-text"); if (cmText) { addText(cmText); return } var markerID = node.getAttribute("cm-marker"), range; if (markerID) { var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)); if (found.length && (range = found[0].find(0))) { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)); } return } if (node.getAttribute("contenteditable") == "false") { return } var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName); if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return } if (isBlock) { close(); } for (var i = 0; i < node.childNodes.length; i++) { walk(node.childNodes[i]); } if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; } if (isBlock) { closing = true; } } else if (node.nodeType == 3) { addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " ")); } } for (;;) { walk(from); if (from == to) { break } from = from.nextSibling; extraLinebreak = false; } return text } function domToPos(cm, node, offset) { var lineNode; if (node == cm.display.lineDiv) { lineNode = cm.display.lineDiv.childNodes[offset]; if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) } node = null; offset = 0; } else { for (lineNode = node;; lineNode = lineNode.parentNode) { if (!lineNode || lineNode == cm.display.lineDiv) { return null } if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break } } } for (var i = 0; i < cm.display.view.length; i++) { var lineView = cm.display.view[i]; if (lineView.node == lineNode) { return locateNodeInLineView(lineView, node, offset) } } } function locateNodeInLineView(lineView, node, offset) { var wrapper = lineView.text.firstChild, bad = false; if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) } if (node == wrapper) { bad = true; node = wrapper.childNodes[offset]; offset = 0; if (!node) { var line = lineView.rest ? lst(lineView.rest) : lineView.line; return badPos(Pos(lineNo(line), line.text.length), bad) } } var textNode = node.nodeType == 3 ? node : null, topNode = node; if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { textNode = node.firstChild; if (offset) { offset = textNode.nodeValue.length; } } while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; } var measure = lineView.measure, maps = measure.maps; function find(textNode, topNode, offset) { for (var i = -1; i < (maps ? maps.length : 0); i++) { var map = i < 0 ? measure.map : maps[i]; for (var j = 0; j < map.length; j += 3) { var curNode = map[j + 2]; if (curNode == textNode || curNode == topNode) { var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]); var ch = map[j] + offset; if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)]; } return Pos(line, ch) } } } } var found = find(textNode, topNode, offset); if (found) { return badPos(found, bad) } // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { found = find(after, after.firstChild, 0); if (found) { return badPos(Pos(found.line, found.ch - dist), bad) } else { dist += after.textContent.length; } } for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) { found = find(before, before.firstChild, -1); if (found) { return badPos(Pos(found.line, found.ch + dist$1), bad) } else { dist$1 += before.textContent.length; } } } // TEXTAREA INPUT STYLE var TextareaInput = function(cm) { this.cm = cm; // See input.poll and input.reset this.prevInput = ""; // Flag that indicates whether we expect input to appear real soon // now (after some event like 'keypress' or 'input') and are // polling intensively. this.pollingFast = false; // Self-resetting timeout for the poller this.polling = new Delayed(); // Used to work around IE issue with selection being forgotten when focus moves away from textarea this.hasSelection = false; this.composing = null; }; TextareaInput.prototype.init = function (display) { var this$1 = this; var input = this, cm = this.cm; this.createField(display); var te = this.textarea; display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild); // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) if (ios) { te.style.width = "0px"; } on(te, "input", function () { if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; } input.poll(); }); on(te, "paste", function (e) { if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } cm.state.pasteIncoming = +new Date; input.fastPoll(); }); function prepareCopyCut(e) { if (signalDOMEvent(cm, e)) { return } if (cm.somethingSelected()) { setLastCopied({lineWise: false, text: cm.getSelections()}); } else if (!cm.options.lineWiseCopyCut) { return } else { var ranges = copyableRanges(cm); setLastCopied({lineWise: true, text: ranges.text}); if (e.type == "cut") { cm.setSelections(ranges.ranges, null, sel_dontScroll); } else { input.prevInput = ""; te.value = ranges.text.join("\n"); selectInput(te); } } if (e.type == "cut") { cm.state.cutIncoming = +new Date; } } on(te, "cut", prepareCopyCut); on(te, "copy", prepareCopyCut); on(display.scroller, "paste", function (e) { if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return } if (!te.dispatchEvent) { cm.state.pasteIncoming = +new Date; input.focus(); return } // Pass the `paste` event to the textarea so it's handled by its event listener. var event = new Event("paste"); event.clipboardData = e.clipboardData; te.dispatchEvent(event); }); // Prevent normal selection in the editor (we handle our own) on(display.lineSpace, "selectstart", function (e) { if (!eventInWidget(display, e)) { e_preventDefault(e); } }); on(te, "compositionstart", function () { var start = cm.getCursor("from"); if (input.composing) { input.composing.range.clear(); } input.composing = { start: start, range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) }; }); on(te, "compositionend", function () { if (input.composing) { input.poll(); input.composing.range.clear(); input.composing = null; } }); }; TextareaInput.prototype.createField = function (_display) { // Wraps and hides input textarea this.wrapper = hiddenTextarea(); // The semihidden textarea that is focused when the editor is // focused, and receives input. this.textarea = this.wrapper.firstChild; }; TextareaInput.prototype.screenReaderLabelChanged = function (label) { // Label for screenreaders, accessibility if(label) { this.textarea.setAttribute('aria-label', label); } else { this.textarea.removeAttribute('aria-label'); } }; TextareaInput.prototype.prepareSelection = function () { // Redraw the selection and/or cursor var cm = this.cm, display = cm.display, doc = cm.doc; var result = prepareSelection(cm); // Move the hidden textarea near the cursor to prevent scrolling artifacts if (cm.options.moveInputWithCursor) { var headPos = cursorCoords(cm, doc.sel.primary().head, "div"); var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, headPos.top + lineOff.top - wrapOff.top)); result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, headPos.left + lineOff.left - wrapOff.left)); } return result }; TextareaInput.prototype.showSelection = function (drawn) { var cm = this.cm, display = cm.display; removeChildrenAndAdd(display.cursorDiv, drawn.cursors); removeChildrenAndAdd(display.selectionDiv, drawn.selection); if (drawn.teTop != null) { this.wrapper.style.top = drawn.teTop + "px"; this.wrapper.style.left = drawn.teLeft + "px"; } }; // Reset the input to correspond to the selection (or to be empty, // when not typing and nothing is selected) TextareaInput.prototype.reset = function (typing) { if (this.contextMenuPending || this.composing) { return } var cm = this.cm; if (cm.somethingSelected()) { this.prevInput = ""; var content = cm.getSelection(); this.textarea.value = content; if (cm.state.focused) { selectInput(this.textarea); } if (ie && ie_version >= 9) { this.hasSelection = content; } } else if (!typing) { this.prevInput = this.textarea.value = ""; if (ie && ie_version >= 9) { this.hasSelection = null; } } }; TextareaInput.prototype.getField = function () { return this.textarea }; TextareaInput.prototype.supportsTouch = function () { return false }; TextareaInput.prototype.focus = function () { if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) { try { this.textarea.focus(); } catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM } }; TextareaInput.prototype.blur = function () { this.textarea.blur(); }; TextareaInput.prototype.resetPosition = function () { this.wrapper.style.top = this.wrapper.style.left = 0; }; TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); }; // Poll for input changes, using the normal rate of polling. This // runs as long as the editor is focused. TextareaInput.prototype.slowPoll = function () { var this$1 = this; if (this.pollingFast) { return } this.polling.set(this.cm.options.pollInterval, function () { this$1.poll(); if (this$1.cm.state.focused) { this$1.slowPoll(); } }); }; // When an event has just come in that is likely to add or change // something in the input textarea, we poll faster, to ensure that // the change appears on the screen quickly. TextareaInput.prototype.fastPoll = function () { var missed = false, input = this; input.pollingFast = true; function p() { var changed = input.poll(); if (!changed && !missed) {missed = true; input.polling.set(60, p);} else {input.pollingFast = false; input.slowPoll();} } input.polling.set(20, p); }; // Read input from the textarea, and update the document to match. // When something is selected, it is present in the textarea, and // selected (unless it is huge, in which case a placeholder is // used). When nothing is selected, the cursor sits after previously // seen text (can be empty), which is stored in prevInput (we must // not reset the textarea when typing, because that breaks IME). TextareaInput.prototype.poll = function () { var this$1 = this; var cm = this.cm, input = this.textarea, prevInput = this.prevInput; // Since this is called a *lot*, try to bail out as cheaply as // possible when it is clear that nothing happened. hasSelection // will be the case when there is a lot of text in the textarea, // in which case reading its value would be expensive. if (this.contextMenuPending || !cm.state.focused || (hasSelection(input) && !prevInput && !this.composing) || cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq) { return false } var text = input.value; // If nothing changed, bail. if (text == prevInput && !cm.somethingSelected()) { return false } // Work around nonsensical selection resetting in IE9/10, and // inexplicable appearance of private area unicode characters on // some key combos in Mac (#2689). if (ie && ie_version >= 9 && this.hasSelection === text || mac && /[\uf700-\uf7ff]/.test(text)) { cm.display.input.reset(); return false } if (cm.doc.sel == cm.display.selForContextMenu) { var first = text.charCodeAt(0); if (first == 0x200b && !prevInput) { prevInput = "\u200b"; } if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") } } // Find the part of the input that is actually new var same = 0, l = Math.min(prevInput.length, text.length); while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; } runInOp(cm, function () { applyTextInput(cm, text.slice(same), prevInput.length - same, null, this$1.composing ? "*compose" : null); // Don't leave long text in the textarea, since it makes further polling slow if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = ""; } else { this$1.prevInput = text; } if (this$1.composing) { this$1.composing.range.clear(); this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"), {className: "CodeMirror-composing"}); } }); return true }; TextareaInput.prototype.ensurePolled = function () { if (this.pollingFast && this.poll()) { this.pollingFast = false; } }; TextareaInput.prototype.onKeyPress = function () { if (ie && ie_version >= 9) { this.hasSelection = null; } this.fastPoll(); }; TextareaInput.prototype.onContextMenu = function (e) { var input = this, cm = input.cm, display = cm.display, te = input.textarea; if (input.contextMenuPending) { input.contextMenuPending(); } var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; if (!pos || presto) { return } // Opera is difficult. // Reset the current text selection only if the click is done outside of the selection // and 'resetSelectionOnContextMenu' option is true. var reset = cm.options.resetSelectionOnContextMenu; if (reset && cm.doc.sel.contains(pos) == -1) { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); } var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText; var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect(); input.wrapper.style.cssText = "position: static"; te.style.cssText = "position: absolute; width: 30px; height: 30px;\n top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; var oldScrollY; if (webkit) { oldScrollY = window.scrollY; } // Work around Chrome issue (#2712) display.input.focus(); if (webkit) { window.scrollTo(null, oldScrollY); } display.input.reset(); // Adds "Select all" to context menu in FF if (!cm.somethingSelected()) { te.value = input.prevInput = " "; } input.contextMenuPending = rehide; display.selForContextMenu = cm.doc.sel; clearTimeout(display.detectingSelectAll); // Select-all will be greyed out if there's nothing to select, so // this adds a zero-width space so that we can later check whether // it got selected. function prepareSelectAllHack() { if (te.selectionStart != null) { var selected = cm.somethingSelected(); var extval = "\u200b" + (selected ? te.value : ""); te.value = "\u21da"; // Used to catch context-menu undo te.value = extval; input.prevInput = selected ? "" : "\u200b"; te.selectionStart = 1; te.selectionEnd = extval.length; // Re-set this, in case some other handler touched the // selection in the meantime. display.selForContextMenu = cm.doc.sel; } } function rehide() { if (input.contextMenuPending != rehide) { return } input.contextMenuPending = false; input.wrapper.style.cssText = oldWrapperCSS; te.style.cssText = oldCSS; if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); } // Try to detect the user choosing select-all if (te.selectionStart != null) { if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); } var i = 0, poll = function () { if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && te.selectionEnd > 0 && input.prevInput == "\u200b") { operation(cm, selectAll)(cm); } else if (i++ < 10) { display.detectingSelectAll = setTimeout(poll, 500); } else { display.selForContextMenu = null; display.input.reset(); } }; display.detectingSelectAll = setTimeout(poll, 200); } } if (ie && ie_version >= 9) { prepareSelectAllHack(); } if (captureRightClick) { e_stop(e); var mouseup = function () { off(window, "mouseup", mouseup); setTimeout(rehide, 20); }; on(window, "mouseup", mouseup); } else { setTimeout(rehide, 50); } }; TextareaInput.prototype.readOnlyChanged = function (val) { if (!val) { this.reset(); } this.textarea.disabled = val == "nocursor"; this.textarea.readOnly = !!val; }; TextareaInput.prototype.setUneditable = function () {}; TextareaInput.prototype.needsContentAttribute = false; function fromTextArea(textarea, options) { options = options ? copyObj(options) : {}; options.value = textarea.value; if (!options.tabindex && textarea.tabIndex) { options.tabindex = textarea.tabIndex; } if (!options.placeholder && textarea.placeholder) { options.placeholder = textarea.placeholder; } // Set autofocus to true if this textarea is focused, or if it has // autofocus and no other element is focused. if (options.autofocus == null) { var hasFocus = activeElt(); options.autofocus = hasFocus == textarea || textarea.getAttribute("autofocus") != null && hasFocus == document.body; } function save() {textarea.value = cm.getValue();} var realSubmit; if (textarea.form) { on(textarea.form, "submit", save); // Deplorable hack to make the submit method do the right thing. if (!options.leaveSubmitMethodAlone) { var form = textarea.form; realSubmit = form.submit; try { var wrappedSubmit = form.submit = function () { save(); form.submit = realSubmit; form.submit(); form.submit = wrappedSubmit; }; } catch(e) {} } } options.finishInit = function (cm) { cm.save = save; cm.getTextArea = function () { return textarea; }; cm.toTextArea = function () { cm.toTextArea = isNaN; // Prevent this from being ran twice save(); textarea.parentNode.removeChild(cm.getWrapperElement()); textarea.style.display = ""; if (textarea.form) { off(textarea.form, "submit", save); if (!options.leaveSubmitMethodAlone && typeof textarea.form.submit == "function") { textarea.form.submit = realSubmit; } } }; }; textarea.style.display = "none"; var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); }, options); return cm } function addLegacyProps(CodeMirror) { CodeMirror.off = off; CodeMirror.on = on; CodeMirror.wheelEventPixels = wheelEventPixels; CodeMirror.Doc = Doc; CodeMirror.splitLines = splitLinesAuto; CodeMirror.countColumn = countColumn; CodeMirror.findColumn = findColumn; CodeMirror.isWordChar = isWordCharBasic; CodeMirror.Pass = Pass; CodeMirror.signal = signal; CodeMirror.Line = Line; CodeMirror.changeEnd = changeEnd; CodeMirror.scrollbarModel = scrollbarModel; CodeMirror.Pos = Pos; CodeMirror.cmpPos = cmp; CodeMirror.modes = modes; CodeMirror.mimeModes = mimeModes; CodeMirror.resolveMode = resolveMode; CodeMirror.getMode = getMode; CodeMirror.modeExtensions = modeExtensions; CodeMirror.extendMode = extendMode; CodeMirror.copyState = copyState; CodeMirror.startState = startState; CodeMirror.innerMode = innerMode; CodeMirror.commands = commands; CodeMirror.keyMap = keyMap; CodeMirror.keyName = keyName; CodeMirror.isModifierKey = isModifierKey; CodeMirror.lookupKey = lookupKey; CodeMirror.normalizeKeyMap = normalizeKeyMap; CodeMirror.StringStream = StringStream; CodeMirror.SharedTextMarker = SharedTextMarker; CodeMirror.TextMarker = TextMarker; CodeMirror.LineWidget = LineWidget; CodeMirror.e_preventDefault = e_preventDefault; CodeMirror.e_stopPropagation = e_stopPropagation; CodeMirror.e_stop = e_stop; CodeMirror.addClass = addClass; CodeMirror.contains = contains; CodeMirror.rmClass = rmClass; CodeMirror.keyNames = keyNames; } // EDITOR CONSTRUCTOR defineOptions(CodeMirror); addEditorMethods(CodeMirror); // Set up methods on CodeMirror's prototype to redirect to the editor's document. var dontDelegate = "iter insert remove copy getEditor constructor".split(" "); for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) { CodeMirror.prototype[prop] = (function(method) { return function() {return method.apply(this.doc, arguments)} })(Doc.prototype[prop]); } } eventMixin(Doc); CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}; // Extra arguments are stored as the mode's dependencies, which is // used by (legacy) mechanisms like loadmode.js to automatically // load a mode. (Preferred mechanism is the require/define calls.) CodeMirror.defineMode = function(name/*, mode, …*/) { if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name; } defineMode.apply(this, arguments); }; CodeMirror.defineMIME = defineMIME; // Minimal default mode. CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); }); CodeMirror.defineMIME("text/plain", "null"); // EXTENSIONS CodeMirror.defineExtension = function (name, func) { CodeMirror.prototype[name] = func; }; CodeMirror.defineDocExtension = function (name, func) { Doc.prototype[name] = func; }; CodeMirror.fromTextArea = fromTextArea; addLegacyProps(CodeMirror); CodeMirror.version = "5.65.1"; return CodeMirror; })));
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