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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 // This is CodeMirror (http://codemirror.net), a code editor 5 // implemented in JavaScript on top of the browser's DOM. 6 // 7 // You can find some technical background for some of the code below 8 // at http://marijnhaverbeke.nl/blog/#cm-internals . 9 10 (function (global, factory) { 11 typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : 12 typeof define === 'function' && define.amd ? define(factory) : 13 (global.CodeMirror = factory()); 14 }(this, (function () { 'use strict'; 15 16 // Kludges for bugs and behavior differences that can't be feature 17 // detected are enabled based on userAgent etc sniffing. 18 var userAgent = navigator.userAgent 19 var platform = navigator.platform 20 21 var gecko = /gecko\/\d/i.test(userAgent) 22 var ie_upto10 = /MSIE \d/.test(userAgent) 23 var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent) 24 var edge = /Edge\/(\d+)/.exec(userAgent) 25 var ie = ie_upto10 || ie_11up || edge 26 var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]) 27 var webkit = !edge && /WebKit\//.test(userAgent) 28 var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent) 29 var chrome = !edge && /Chrome\//.test(userAgent) 30 var presto = /Opera\//.test(userAgent) 31 var safari = /Apple Computer/.test(navigator.vendor) 32 var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent) 33 var phantom = /PhantomJS/.test(userAgent) 34 35 var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent) 36 var android = /Android/.test(userAgent) 37 // This is woefully incomplete. Suggestions for alternative methods welcome. 38 var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent) 39 var mac = ios || /Mac/.test(platform) 40 var chromeOS = /\bCrOS\b/.test(userAgent) 41 var windows = /win/i.test(platform) 42 43 var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/) 44 if (presto_version) { presto_version = Number(presto_version[1]) } 45 if (presto_version && presto_version >= 15) { presto = false; webkit = true } 46 // Some browsers use the wrong event properties to signal cmd/ctrl on OS X 47 var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)) 48 var captureRightClick = gecko || (ie && ie_version >= 9) 49 50 function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") } 51 52 var rmClass = function(node, cls) { 53 var current = node.className 54 var match = classTest(cls).exec(current) 55 if (match) { 56 var after = current.slice(match.index + match[0].length) 57 node.className = current.slice(0, match.index) + (after ? match[1] + after : "") 58 } 59 } 60 61 function removeChildren(e) { 62 for (var count = e.childNodes.length; count > 0; --count) 63 { e.removeChild(e.firstChild) } 64 return e 65 } 66 67 function removeChildrenAndAdd(parent, e) { 68 return removeChildren(parent).appendChild(e) 69 } 70 71 function elt(tag, content, className, style) { 72 var e = document.createElement(tag) 73 if (className) { e.className = className } 74 if (style) { e.style.cssText = style } 75 if (typeof content == "string") { e.appendChild(document.createTextNode(content)) } 76 else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } } 77 return e 78 } 79 // wrapper for elt, which removes the elt from the accessibility tree 80 function eltP(tag, content, className, style) { 81 var e = elt(tag, content, className, style) 82 e.setAttribute("role", "presentation") 83 return e 84 } 85 86 var range 87 if (document.createRange) { range = function(node, start, end, endNode) { 88 var r = document.createRange() 89 r.setEnd(endNode || node, end) 90 r.setStart(node, start) 91 return r 92 } } 93 else { range = function(node, start, end) { 94 var r = document.body.createTextRange() 95 try { r.moveToElementText(node.parentNode) } 96 catch(e) { return r } 97 r.collapse(true) 98 r.moveEnd("character", end) 99 r.moveStart("character", start) 100 return r 101 } } 102 103 function contains(parent, child) { 104 if (child.nodeType == 3) // Android browser always returns false when child is a textnode 105 { child = child.parentNode } 106 if (parent.contains) 107 { return parent.contains(child) } 108 do { 109 if (child.nodeType == 11) { child = child.host } 110 if (child == parent) { return true } 111 } while (child = child.parentNode) 112 } 113 114 function activeElt() { 115 // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. 116 // IE < 10 will throw when accessed while the page is loading or in an iframe. 117 // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. 118 var activeElement 119 try { 120 activeElement = document.activeElement 121 } catch(e) { 122 activeElement = document.body || null 123 } 124 while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) 125 { activeElement = activeElement.shadowRoot.activeElement } 126 return activeElement 127 } 128 129 function addClass(node, cls) { 130 var current = node.className 131 if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls } 132 } 133 function joinClasses(a, b) { 134 var as = a.split(" ") 135 for (var i = 0; i < as.length; i++) 136 { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i] } } 137 return b 138 } 139 140 var selectInput = function(node) { node.select() } 141 if (ios) // Mobile Safari apparently has a bug where select() is broken. 142 { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } } 143 else if (ie) // Suppress mysterious IE10 errors 144 { selectInput = function(node) { try { node.select() } catch(_e) {} } } 145 146 function bind(f) { 147 var args = Array.prototype.slice.call(arguments, 1) 148 return function(){return f.apply(null, args)} 149 } 150 151 function copyObj(obj, target, overwrite) { 152 if (!target) { target = {} } 153 for (var prop in obj) 154 { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) 155 { target[prop] = obj[prop] } } 156 return target 157 } 158 159 // Counts the column offset in a string, taking tabs into account. 160 // Used mostly to find indentation. 161 function countColumn(string, end, tabSize, startIndex, startValue) { 162 if (end == null) { 163 end = string.search(/[^\s\u00a0]/) 164 if (end == -1) { end = string.length } 165 } 166 for (var i = startIndex || 0, n = startValue || 0;;) { 167 var nextTab = string.indexOf("\t", i) 168 if (nextTab < 0 || nextTab >= end) 169 { return n + (end - i) } 170 n += nextTab - i 171 n += tabSize - (n % tabSize) 172 i = nextTab + 1 173 } 174 } 175 176 var Delayed = function() {this.id = null}; 177 Delayed.prototype.set = function (ms, f) { 178 clearTimeout(this.id) 179 this.id = setTimeout(f, ms) 180 }; 181 182 function indexOf(array, elt) { 183 for (var i = 0; i < array.length; ++i) 184 { if (array[i] == elt) { return i } } 185 return -1 186 } 187 188 // Number of pixels added to scroller and sizer to hide scrollbar 189 var scrollerGap = 30 190 191 // Returned or thrown by various protocols to signal 'I'm not 192 // handling this'. 193 var Pass = {toString: function(){return "CodeMirror.Pass"}} 194 195 // Reused option objects for setSelection & friends 196 var sel_dontScroll = {scroll: false}; 197 var sel_mouse = {origin: "*mouse"}; 198 var sel_move = {origin: "+move"}; 199 // The inverse of countColumn -- find the offset that corresponds to 200 // a particular column. 201 function findColumn(string, goal, tabSize) { 202 for (var pos = 0, col = 0;;) { 203 var nextTab = string.indexOf("\t", pos) 204 if (nextTab == -1) { nextTab = string.length } 205 var skipped = nextTab - pos 206 if (nextTab == string.length || col + skipped >= goal) 207 { return pos + Math.min(skipped, goal - col) } 208 col += nextTab - pos 209 col += tabSize - (col % tabSize) 210 pos = nextTab + 1 211 if (col >= goal) { return pos } 212 } 213 } 214 215 var spaceStrs = [""] 216 function spaceStr(n) { 217 while (spaceStrs.length <= n) 218 { spaceStrs.push(lst(spaceStrs) + " ") } 219 return spaceStrs[n] 220 } 221 222 function lst(arr) { return arr[arr.length-1] } 223 224 function map(array, f) { 225 var out = [] 226 for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) } 227 return out 228 } 229 230 function insertSorted(array, value, score) { 231 var pos = 0, priority = score(value) 232 while (pos < array.length && score(array[pos]) <= priority) { pos++ } 233 array.splice(pos, 0, value) 234 } 235 236 function nothing() {} 237 238 function createObj(base, props) { 239 var inst 240 if (Object.create) { 241 inst = Object.create(base) 242 } else { 243 nothing.prototype = base 244 inst = new nothing() 245 } 246 if (props) { copyObj(props, inst) } 247 return inst 248 } 249 250 var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/ 251 function isWordCharBasic(ch) { 252 return /\w/.test(ch) || ch > "\x80" && 253 (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)) 254 } 255 function isWordChar(ch, helper) { 256 if (!helper) { return isWordCharBasic(ch) } 257 if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true } 258 return helper.test(ch) 259 } 260 261 function isEmpty(obj) { 262 for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } } 263 return true 264 } 265 266 // Extending unicode characters. A series of a non-extending char + 267 // any number of extending chars is treated as a single unit as far 268 // as editing and measuring is concerned. This is not fully correct, 269 // since some scripts/fonts/browsers also treat other configurations 270 // of code points as a group. 271 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]/ 272 function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } 273 274 // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. 275 function skipExtendingChars(str, pos, dir) { 276 while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir } 277 return pos 278 } 279 280 // Returns the value from the range [`from`; `to`] that satisfies 281 // `pred` and is closest to `from`. Assumes that at least `to` 282 // satisfies `pred`. Supports `from` being greater than `to`. 283 function findFirst(pred, from, to) { 284 // At any point we are certain `to` satisfies `pred`, don't know 285 // whether `from` does. 286 var dir = from > to ? -1 : 1 287 for (;;) { 288 if (from == to) { return from } 289 var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF) 290 if (mid == from) { return pred(mid) ? from : to } 291 if (pred(mid)) { to = mid } 292 else { from = mid + dir } 293 } 294 } 295 296 // The display handles the DOM integration, both for input reading 297 // and content drawing. It holds references to DOM nodes and 298 // display-related state. 299 300 function Display(place, doc, input) { 301 var d = this 302 this.input = input 303 304 // Covers bottom-right square when both scrollbars are present. 305 d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler") 306 d.scrollbarFiller.setAttribute("cm-not-content", "true") 307 // Covers bottom of gutter when coverGutterNextToScrollbar is on 308 // and h scrollbar is present. 309 d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler") 310 d.gutterFiller.setAttribute("cm-not-content", "true") 311 // Will contain the actual code, positioned to cover the viewport. 312 d.lineDiv = eltP("div", null, "CodeMirror-code") 313 // Elements are added to these to represent selection and cursors. 314 d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1") 315 d.cursorDiv = elt("div", null, "CodeMirror-cursors") 316 // A visibility: hidden element used to find the size of things. 317 d.measure = elt("div", null, "CodeMirror-measure") 318 // When lines outside of the viewport are measured, they are drawn in this. 319 d.lineMeasure = elt("div", null, "CodeMirror-measure") 320 // Wraps everything that needs to exist inside the vertically-padded coordinate system 321 d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], 322 null, "position: relative; outline: none") 323 var lines = eltP("div", [d.lineSpace], "CodeMirror-lines") 324 // Moved around its parent to cover visible view. 325 d.mover = elt("div", [lines], null, "position: relative") 326 // Set to the height of the document, allowing scrolling. 327 d.sizer = elt("div", [d.mover], "CodeMirror-sizer") 328 d.sizerWidth = null 329 // Behavior of elts with overflow: auto and padding is 330 // inconsistent across browsers. This is used to ensure the 331 // scrollable area is big enough. 332 d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;") 333 // Will contain the gutters, if any. 334 d.gutters = elt("div", null, "CodeMirror-gutters") 335 d.lineGutter = null 336 // Actual scrollable element. 337 d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll") 338 d.scroller.setAttribute("tabIndex", "-1") 339 // The element in which the editor lives. 340 d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror") 341 342 // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) 343 if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 } 344 if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true } 345 346 if (place) { 347 if (place.appendChild) { place.appendChild(d.wrapper) } 348 else { place(d.wrapper) } 349 } 350 351 // Current rendered range (may be bigger than the view window). 352 d.viewFrom = d.viewTo = doc.first 353 d.reportedViewFrom = d.reportedViewTo = doc.first 354 // Information about the rendered lines. 355 d.view = [] 356 d.renderedView = null 357 // Holds info about a single rendered line when it was rendered 358 // for measurement, while not in view. 359 d.externalMeasured = null 360 // Empty space (in pixels) above the view 361 d.viewOffset = 0 362 d.lastWrapHeight = d.lastWrapWidth = 0 363 d.updateLineNumbers = null 364 365 d.nativeBarWidth = d.barHeight = d.barWidth = 0 366 d.scrollbarsClipped = false 367 368 // Used to only resize the line number gutter when necessary (when 369 // the amount of lines crosses a boundary that makes its width change) 370 d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null 371 // Set to true when a non-horizontal-scrolling line widget is 372 // added. As an optimization, line widget aligning is skipped when 373 // this is false. 374 d.alignWidgets = false 375 376 d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null 377 378 // Tracks the maximum line length so that the horizontal scrollbar 379 // can be kept static when scrolling. 380 d.maxLine = null 381 d.maxLineLength = 0 382 d.maxLineChanged = false 383 384 // Used for measuring wheel scrolling granularity 385 d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null 386 387 // True when shift is held down. 388 d.shift = false 389 390 // Used to track whether anything happened since the context menu 391 // was opened. 392 d.selForContextMenu = null 393 394 d.activeTouch = null 395 396 input.init(d) 397 } 398 399 // Find the line object corresponding to the given line number. 400 function getLine(doc, n) { 401 n -= doc.first 402 if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") } 403 var chunk = doc 404 while (!chunk.lines) { 405 for (var i = 0;; ++i) { 406 var child = chunk.children[i], sz = child.chunkSize() 407 if (n < sz) { chunk = child; break } 408 n -= sz 409 } 410 } 411 return chunk.lines[n] 412 } 413 414 // Get the part of a document between two positions, as an array of 415 // strings. 416 function getBetween(doc, start, end) { 417 var out = [], n = start.line 418 doc.iter(start.line, end.line + 1, function (line) { 419 var text = line.text 420 if (n == end.line) { text = text.slice(0, end.ch) } 421 if (n == start.line) { text = text.slice(start.ch) } 422 out.push(text) 423 ++n 424 }) 425 return out 426 } 427 // Get the lines between from and to, as array of strings. 428 function getLines(doc, from, to) { 429 var out = [] 430 doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value 431 return out 432 } 433 434 // Update the height of a line, propagating the height change 435 // upwards to parent nodes. 436 function updateLineHeight(line, height) { 437 var diff = height - line.height 438 if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } } 439 } 440 441 // Given a line object, find its line number by walking up through 442 // its parent links. 443 function lineNo(line) { 444 if (line.parent == null) { return null } 445 var cur = line.parent, no = indexOf(cur.lines, line) 446 for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { 447 for (var i = 0;; ++i) { 448 if (chunk.children[i] == cur) { break } 449 no += chunk.children[i].chunkSize() 450 } 451 } 452 return no + cur.first 453 } 454 455 // Find the line at the given vertical position, using the height 456 // information in the document tree. 457 function lineAtHeight(chunk, h) { 458 var n = chunk.first 459 outer: do { 460 for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) { 461 var child = chunk.children[i$1], ch = child.height 462 if (h < ch) { chunk = child; continue outer } 463 h -= ch 464 n += child.chunkSize() 465 } 466 return n 467 } while (!chunk.lines) 468 var i = 0 469 for (; i < chunk.lines.length; ++i) { 470 var line = chunk.lines[i], lh = line.height 471 if (h < lh) { break } 472 h -= lh 473 } 474 return n + i 475 } 476 477 function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size} 478 479 function lineNumberFor(options, i) { 480 return String(options.lineNumberFormatter(i + options.firstLineNumber)) 481 } 482 483 // A Pos instance represents a position within the text. 484 function Pos(line, ch, sticky) { 485 if ( sticky === void 0 ) sticky = null; 486 487 if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) } 488 this.line = line 489 this.ch = ch 490 this.sticky = sticky 491 } 492 493 // Compare two positions, return 0 if they are the same, a negative 494 // number when a is less, and a positive number otherwise. 495 function cmp(a, b) { return a.line - b.line || a.ch - b.ch } 496 497 function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 } 498 499 function copyPos(x) {return Pos(x.line, x.ch)} 500 function maxPos(a, b) { return cmp(a, b) < 0 ? b : a } 501 function minPos(a, b) { return cmp(a, b) < 0 ? a : b } 502 503 // Most of the external API clips given positions to make sure they 504 // actually exist within the document. 505 function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))} 506 function clipPos(doc, pos) { 507 if (pos.line < doc.first) { return Pos(doc.first, 0) } 508 var last = doc.first + doc.size - 1 509 if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) } 510 return clipToLen(pos, getLine(doc, pos.line).text.length) 511 } 512 function clipToLen(pos, linelen) { 513 var ch = pos.ch 514 if (ch == null || ch > linelen) { return Pos(pos.line, linelen) } 515 else if (ch < 0) { return Pos(pos.line, 0) } 516 else { return pos } 517 } 518 function clipPosArray(doc, array) { 519 var out = [] 520 for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) } 521 return out 522 } 523 524 // Optimize some code when these features are not used. 525 var sawReadOnlySpans = false; 526 var sawCollapsedSpans = false; 527 function seeReadOnlySpans() { 528 sawReadOnlySpans = true 529 } 530 531 function seeCollapsedSpans() { 532 sawCollapsedSpans = true 533 } 534 535 // TEXTMARKER SPANS 536 537 function MarkedSpan(marker, from, to) { 538 this.marker = marker 539 this.from = from; this.to = to 540 } 541 542 // Search an array of spans for a span matching the given marker. 543 function getMarkedSpanFor(spans, marker) { 544 if (spans) { for (var i = 0; i < spans.length; ++i) { 545 var span = spans[i] 546 if (span.marker == marker) { return span } 547 } } 548 } 549 // Remove a span from an array, returning undefined if no spans are 550 // left (we don't store arrays for lines without spans). 551 function removeMarkedSpan(spans, span) { 552 var r 553 for (var i = 0; i < spans.length; ++i) 554 { if (spans[i] != span) { (r || (r = [])).push(spans[i]) } } 555 return r 556 } 557 // Add a span to a line. 558 function addMarkedSpan(line, span) { 559 line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span] 560 span.marker.attachLine(line) 561 } 562 563 // Used for the algorithm that adjusts markers for a change in the 564 // document. These functions cut an array of spans at a given 565 // character position, returning an array of remaining chunks (or 566 // undefined if nothing remains). 567 function markedSpansBefore(old, startCh, isInsert) { 568 var nw 569 if (old) { for (var i = 0; i < old.length; ++i) { 570 var span = old[i], marker = span.marker 571 var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh) 572 if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { 573 var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh) 574 ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)) 575 } 576 } } 577 return nw 578 } 579 function markedSpansAfter(old, endCh, isInsert) { 580 var nw 581 if (old) { for (var i = 0; i < old.length; ++i) { 582 var span = old[i], marker = span.marker 583 var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh) 584 if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { 585 var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh) 586 ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, 587 span.to == null ? null : span.to - endCh)) 588 } 589 } } 590 return nw 591 } 592 593 // Given a change object, compute the new set of marker spans that 594 // cover the line in which the change took place. Removes spans 595 // entirely within the change, reconnects spans belonging to the 596 // same marker that appear on both sides of the change, and cuts off 597 // spans partially within the change. Returns an array of span 598 // arrays with one element for each line in (after) the change. 599 function stretchSpansOverChange(doc, change) { 600 if (change.full) { return null } 601 var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans 602 var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans 603 if (!oldFirst && !oldLast) { return null } 604 605 var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0 606 // Get the spans that 'stick out' on both sides 607 var first = markedSpansBefore(oldFirst, startCh, isInsert) 608 var last = markedSpansAfter(oldLast, endCh, isInsert) 609 610 // Next, merge those two ends 611 var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0) 612 if (first) { 613 // Fix up .to properties of first 614 for (var i = 0; i < first.length; ++i) { 615 var span = first[i] 616 if (span.to == null) { 617 var found = getMarkedSpanFor(last, span.marker) 618 if (!found) { span.to = startCh } 619 else if (sameLine) { span.to = found.to == null ? null : found.to + offset } 620 } 621 } 622 } 623 if (last) { 624 // Fix up .from in last (or move them into first in case of sameLine) 625 for (var i$1 = 0; i$1 < last.length; ++i$1) { 626 var span$1 = last[i$1] 627 if (span$1.to != null) { span$1.to += offset } 628 if (span$1.from == null) { 629 var found$1 = getMarkedSpanFor(first, span$1.marker) 630 if (!found$1) { 631 span$1.from = offset 632 if (sameLine) { (first || (first = [])).push(span$1) } 633 } 634 } else { 635 span$1.from += offset 636 if (sameLine) { (first || (first = [])).push(span$1) } 637 } 638 } 639 } 640 // Make sure we didn't create any zero-length spans 641 if (first) { first = clearEmptySpans(first) } 642 if (last && last != first) { last = clearEmptySpans(last) } 643 644 var newMarkers = [first] 645 if (!sameLine) { 646 // Fill gap with whole-line-spans 647 var gap = change.text.length - 2, gapMarkers 648 if (gap > 0 && first) 649 { for (var i$2 = 0; i$2 < first.length; ++i$2) 650 { if (first[i$2].to == null) 651 { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } } 652 for (var i$3 = 0; i$3 < gap; ++i$3) 653 { newMarkers.push(gapMarkers) } 654 newMarkers.push(last) 655 } 656 return newMarkers 657 } 658 659 // Remove spans that are empty and don't have a clearWhenEmpty 660 // option of false. 661 function clearEmptySpans(spans) { 662 for (var i = 0; i < spans.length; ++i) { 663 var span = spans[i] 664 if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) 665 { spans.splice(i--, 1) } 666 } 667 if (!spans.length) { return null } 668 return spans 669 } 670 671 // Used to 'clip' out readOnly ranges when making a change. 672 function removeReadOnlyRanges(doc, from, to) { 673 var markers = null 674 doc.iter(from.line, to.line + 1, function (line) { 675 if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { 676 var mark = line.markedSpans[i].marker 677 if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) 678 { (markers || (markers = [])).push(mark) } 679 } } 680 }) 681 if (!markers) { return null } 682 var parts = [{from: from, to: to}] 683 for (var i = 0; i < markers.length; ++i) { 684 var mk = markers[i], m = mk.find(0) 685 for (var j = 0; j < parts.length; ++j) { 686 var p = parts[j] 687 if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue } 688 var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to) 689 if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) 690 { newParts.push({from: p.from, to: m.from}) } 691 if (dto > 0 || !mk.inclusiveRight && !dto) 692 { newParts.push({from: m.to, to: p.to}) } 693 parts.splice.apply(parts, newParts) 694 j += newParts.length - 3 695 } 696 } 697 return parts 698 } 699 700 // Connect or disconnect spans from a line. 701 function detachMarkedSpans(line) { 702 var spans = line.markedSpans 703 if (!spans) { return } 704 for (var i = 0; i < spans.length; ++i) 705 { spans[i].marker.detachLine(line) } 706 line.markedSpans = null 707 } 708 function attachMarkedSpans(line, spans) { 709 if (!spans) { return } 710 for (var i = 0; i < spans.length; ++i) 711 { spans[i].marker.attachLine(line) } 712 line.markedSpans = spans 713 } 714 715 // Helpers used when computing which overlapping collapsed span 716 // counts as the larger one. 717 function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 } 718 function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 } 719 720 // Returns a number indicating which of two overlapping collapsed 721 // spans is larger (and thus includes the other). Falls back to 722 // comparing ids when the spans cover exactly the same range. 723 function compareCollapsedMarkers(a, b) { 724 var lenDiff = a.lines.length - b.lines.length 725 if (lenDiff != 0) { return lenDiff } 726 var aPos = a.find(), bPos = b.find() 727 var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b) 728 if (fromCmp) { return -fromCmp } 729 var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b) 730 if (toCmp) { return toCmp } 731 return b.id - a.id 732 } 733 734 // Find out whether a line ends or starts in a collapsed span. If 735 // so, return the marker for that span. 736 function collapsedSpanAtSide(line, start) { 737 var sps = sawCollapsedSpans && line.markedSpans, found 738 if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { 739 sp = sps[i] 740 if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && 741 (!found || compareCollapsedMarkers(found, sp.marker) < 0)) 742 { found = sp.marker } 743 } } 744 return found 745 } 746 function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) } 747 function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) } 748 749 // Test whether there exists a collapsed span that partially 750 // overlaps (covers the start or end, but not both) of a new span. 751 // Such overlap is not allowed. 752 function conflictingCollapsedRange(doc, lineNo, from, to, marker) { 753 var line = getLine(doc, lineNo) 754 var sps = sawCollapsedSpans && line.markedSpans 755 if (sps) { for (var i = 0; i < sps.length; ++i) { 756 var sp = sps[i] 757 if (!sp.marker.collapsed) { continue } 758 var found = sp.marker.find(0) 759 var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker) 760 var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker) 761 if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue } 762 if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) || 763 fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) 764 { return true } 765 } } 766 } 767 768 // A visual line is a line as drawn on the screen. Folding, for 769 // example, can cause multiple logical lines to appear on the same 770 // visual line. This finds the start of the visual line that the 771 // given line is part of (usually that is the line itself). 772 function visualLine(line) { 773 var merged 774 while (merged = collapsedSpanAtStart(line)) 775 { line = merged.find(-1, true).line } 776 return line 777 } 778 779 function visualLineEnd(line) { 780 var merged 781 while (merged = collapsedSpanAtEnd(line)) 782 { line = merged.find(1, true).line } 783 return line 784 } 785 786 // Returns an array of logical lines that continue the visual line 787 // started by the argument, or undefined if there are no such lines. 788 function visualLineContinued(line) { 789 var merged, lines 790 while (merged = collapsedSpanAtEnd(line)) { 791 line = merged.find(1, true).line 792 ;(lines || (lines = [])).push(line) 793 } 794 return lines 795 } 796 797 // Get the line number of the start of the visual line that the 798 // given line number is part of. 799 function visualLineNo(doc, lineN) { 800 var line = getLine(doc, lineN), vis = visualLine(line) 801 if (line == vis) { return lineN } 802 return lineNo(vis) 803 } 804 805 // Get the line number of the start of the next visual line after 806 // the given line. 807 function visualLineEndNo(doc, lineN) { 808 if (lineN > doc.lastLine()) { return lineN } 809 var line = getLine(doc, lineN), merged 810 if (!lineIsHidden(doc, line)) { return lineN } 811 while (merged = collapsedSpanAtEnd(line)) 812 { line = merged.find(1, true).line } 813 return lineNo(line) + 1 814 } 815 816 // Compute whether a line is hidden. Lines count as hidden when they 817 // are part of a visual line that starts with another line, or when 818 // they are entirely covered by collapsed, non-widget span. 819 function lineIsHidden(doc, line) { 820 var sps = sawCollapsedSpans && line.markedSpans 821 if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { 822 sp = sps[i] 823 if (!sp.marker.collapsed) { continue } 824 if (sp.from == null) { return true } 825 if (sp.marker.widgetNode) { continue } 826 if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) 827 { return true } 828 } } 829 } 830 function lineIsHiddenInner(doc, line, span) { 831 if (span.to == null) { 832 var end = span.marker.find(1, true) 833 return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)) 834 } 835 if (span.marker.inclusiveRight && span.to == line.text.length) 836 { return true } 837 for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) { 838 sp = line.markedSpans[i] 839 if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && 840 (sp.to == null || sp.to != span.from) && 841 (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && 842 lineIsHiddenInner(doc, line, sp)) { return true } 843 } 844 } 845 846 // Find the height above the given line. 847 function heightAtLine(lineObj) { 848 lineObj = visualLine(lineObj) 849 850 var h = 0, chunk = lineObj.parent 851 for (var i = 0; i < chunk.lines.length; ++i) { 852 var line = chunk.lines[i] 853 if (line == lineObj) { break } 854 else { h += line.height } 855 } 856 for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { 857 for (var i$1 = 0; i$1 < p.children.length; ++i$1) { 858 var cur = p.children[i$1] 859 if (cur == chunk) { break } 860 else { h += cur.height } 861 } 862 } 863 return h 864 } 865 866 // Compute the character length of a line, taking into account 867 // collapsed ranges (see markText) that might hide parts, and join 868 // other lines onto it. 869 function lineLength(line) { 870 if (line.height == 0) { return 0 } 871 var len = line.text.length, merged, cur = line 872 while (merged = collapsedSpanAtStart(cur)) { 873 var found = merged.find(0, true) 874 cur = found.from.line 875 len += found.from.ch - found.to.ch 876 } 877 cur = line 878 while (merged = collapsedSpanAtEnd(cur)) { 879 var found$1 = merged.find(0, true) 880 len -= cur.text.length - found$1.from.ch 881 cur = found$1.to.line 882 len += cur.text.length - found$1.to.ch 883 } 884 return len 885 } 886 887 // Find the longest line in the document. 888 function findMaxLine(cm) { 889 var d = cm.display, doc = cm.doc 890 d.maxLine = getLine(doc, doc.first) 891 d.maxLineLength = lineLength(d.maxLine) 892 d.maxLineChanged = true 893 doc.iter(function (line) { 894 var len = lineLength(line) 895 if (len > d.maxLineLength) { 896 d.maxLineLength = len 897 d.maxLine = line 898 } 899 }) 900 } 901 902 // BIDI HELPERS 903 904 function iterateBidiSections(order, from, to, f) { 905 if (!order) { return f(from, to, "ltr", 0) } 906 var found = false 907 for (var i = 0; i < order.length; ++i) { 908 var part = order[i] 909 if (part.from < to && part.to > from || from == to && part.to == from) { 910 f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i) 911 found = true 912 } 913 } 914 if (!found) { f(from, to, "ltr") } 915 } 916 917 var bidiOther = null 918 function getBidiPartAt(order, ch, sticky) { 919 var found 920 bidiOther = null 921 for (var i = 0; i < order.length; ++i) { 922 var cur = order[i] 923 if (cur.from < ch && cur.to > ch) { return i } 924 if (cur.to == ch) { 925 if (cur.from != cur.to && sticky == "before") { found = i } 926 else { bidiOther = i } 927 } 928 if (cur.from == ch) { 929 if (cur.from != cur.to && sticky != "before") { found = i } 930 else { bidiOther = i } 931 } 932 } 933 return found != null ? found : bidiOther 934 } 935 936 // Bidirectional ordering algorithm 937 // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm 938 // that this (partially) implements. 939 940 // One-char codes used for character types: 941 // L (L): Left-to-Right 942 // R (R): Right-to-Left 943 // r (AL): Right-to-Left Arabic 944 // 1 (EN): European Number 945 // + (ES): European Number Separator 946 // % (ET): European Number Terminator 947 // n (AN): Arabic Number 948 // , (CS): Common Number Separator 949 // m (NSM): Non-Spacing Mark 950 // b (BN): Boundary Neutral 951 // s (B): Paragraph Separator 952 // t (S): Segment Separator 953 // w (WS): Whitespace 954 // N (ON): Other Neutrals 955 956 // Returns null if characters are ordered as they appear 957 // (left-to-right), or an array of sections ({from, to, level} 958 // objects) in the order in which they occur visually. 959 var bidiOrdering = (function() { 960 // Character types for codepoints 0 to 0xff 961 var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN" 962 // Character types for codepoints 0x600 to 0x6f9 963 var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111" 964 function charType(code) { 965 if (code <= 0xf7) { return lowTypes.charAt(code) } 966 else if (0x590 <= code && code <= 0x5f4) { return "R" } 967 else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) } 968 else if (0x6ee <= code && code <= 0x8ac) { return "r" } 969 else if (0x2000 <= code && code <= 0x200b) { return "w" } 970 else if (code == 0x200c) { return "b" } 971 else { return "L" } 972 } 973 974 var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/ 975 var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/ 976 977 function BidiSpan(level, from, to) { 978 this.level = level 979 this.from = from; this.to = to 980 } 981 982 return function(str, direction) { 983 var outerType = direction == "ltr" ? "L" : "R" 984 985 if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false } 986 var len = str.length, types = [] 987 for (var i = 0; i < len; ++i) 988 { types.push(charType(str.charCodeAt(i))) } 989 990 // W1. Examine each non-spacing mark (NSM) in the level run, and 991 // change the type of the NSM to the type of the previous 992 // character. If the NSM is at the start of the level run, it will 993 // get the type of sor. 994 for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) { 995 var type = types[i$1] 996 if (type == "m") { types[i$1] = prev } 997 else { prev = type } 998 } 999 1000 // W2. Search backwards from each instance of a European number 1001 // until the first strong type (R, L, AL, or sor) is found. If an 1002 // AL is found, change the type of the European number to Arabic 1003 // number. 1004 // W3. Change all ALs to R. 1005 for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) { 1006 var type$1 = types[i$2] 1007 if (type$1 == "1" && cur == "r") { types[i$2] = "n" } 1008 else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R" } } 1009 } 1010 1011 // W4. A single European separator between two European numbers 1012 // changes to a European number. A single common separator between 1013 // two numbers of the same type changes to that type. 1014 for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) { 1015 var type$2 = types[i$3] 1016 if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1" } 1017 else if (type$2 == "," && prev$1 == types[i$3+1] && 1018 (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1 } 1019 prev$1 = type$2 1020 } 1021 1022 // W5. A sequence of European terminators adjacent to European 1023 // numbers changes to all European numbers. 1024 // W6. Otherwise, separators and terminators change to Other 1025 // Neutral. 1026 for (var i$4 = 0; i$4 < len; ++i$4) { 1027 var type$3 = types[i$4] 1028 if (type$3 == ",") { types[i$4] = "N" } 1029 else if (type$3 == "%") { 1030 var end = (void 0) 1031 for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {} 1032 var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N" 1033 for (var j = i$4; j < end; ++j) { types[j] = replace } 1034 i$4 = end - 1 1035 } 1036 } 1037 1038 // W7. Search backwards from each instance of a European number 1039 // until the first strong type (R, L, or sor) is found. If an L is 1040 // found, then change the type of the European number to L. 1041 for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) { 1042 var type$4 = types[i$5] 1043 if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L" } 1044 else if (isStrong.test(type$4)) { cur$1 = type$4 } 1045 } 1046 1047 // N1. A sequence of neutrals takes the direction of the 1048 // surrounding strong text if the text on both sides has the same 1049 // direction. European and Arabic numbers act as if they were R in 1050 // terms of their influence on neutrals. Start-of-level-run (sor) 1051 // and end-of-level-run (eor) are used at level run boundaries. 1052 // N2. Any remaining neutrals take the embedding direction. 1053 for (var i$6 = 0; i$6 < len; ++i$6) { 1054 if (isNeutral.test(types[i$6])) { 1055 var end$1 = (void 0) 1056 for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {} 1057 var before = (i$6 ? types[i$6-1] : outerType) == "L" 1058 var after = (end$1 < len ? types[end$1] : outerType) == "L" 1059 var replace$1 = before == after ? (before ? "L" : "R") : outerType 1060 for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 } 1061 i$6 = end$1 - 1 1062 } 1063 } 1064 1065 // Here we depart from the documented algorithm, in order to avoid 1066 // building up an actual levels array. Since there are only three 1067 // levels (0, 1, 2) in an implementation that doesn't take 1068 // explicit embedding into account, we can build up the order on 1069 // the fly, without following the level-based algorithm. 1070 var order = [], m 1071 for (var i$7 = 0; i$7 < len;) { 1072 if (countsAsLeft.test(types[i$7])) { 1073 var start = i$7 1074 for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {} 1075 order.push(new BidiSpan(0, start, i$7)) 1076 } else { 1077 var pos = i$7, at = order.length 1078 for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {} 1079 for (var j$2 = pos; j$2 < i$7;) { 1080 if (countsAsNum.test(types[j$2])) { 1081 if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) } 1082 var nstart = j$2 1083 for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {} 1084 order.splice(at, 0, new BidiSpan(2, nstart, j$2)) 1085 pos = j$2 1086 } else { ++j$2 } 1087 } 1088 if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) } 1089 } 1090 } 1091 if (order[0].level == 1 && (m = str.match(/^\s+/))) { 1092 order[0].from = m[0].length 1093 order.unshift(new BidiSpan(0, 0, m[0].length)) 1094 } 1095 if (lst(order).level == 1 && (m = str.match(/\s+$/))) { 1096 lst(order).to -= m[0].length 1097 order.push(new BidiSpan(0, len - m[0].length, len)) 1098 } 1099 1100 return direction == "rtl" ? order.reverse() : order 1101 } 1102 })() 1103 1104 // Get the bidi ordering for the given line (and cache it). Returns 1105 // false for lines that are fully left-to-right, and an array of 1106 // BidiSpan objects otherwise. 1107 function getOrder(line, direction) { 1108 var order = line.order 1109 if (order == null) { order = line.order = bidiOrdering(line.text, direction) } 1110 return order 1111 } 1112 1113 // EVENT HANDLING 1114 1115 // Lightweight event framework. on/off also work on DOM nodes, 1116 // registering native DOM handlers. 1117 1118 var noHandlers = [] 1119 1120 var on = function(emitter, type, f) { 1121 if (emitter.addEventListener) { 1122 emitter.addEventListener(type, f, false) 1123 } else if (emitter.attachEvent) { 1124 emitter.attachEvent("on" + type, f) 1125 } else { 1126 var map = emitter._handlers || (emitter._handlers = {}) 1127 map[type] = (map[type] || noHandlers).concat(f) 1128 } 1129 } 1130 1131 function getHandlers(emitter, type) { 1132 return emitter._handlers && emitter._handlers[type] || noHandlers 1133 } 1134 1135 function off(emitter, type, f) { 1136 if (emitter.removeEventListener) { 1137 emitter.removeEventListener(type, f, false) 1138 } else if (emitter.detachEvent) { 1139 emitter.detachEvent("on" + type, f) 1140 } else { 1141 var map = emitter._handlers, arr = map && map[type] 1142 if (arr) { 1143 var index = indexOf(arr, f) 1144 if (index > -1) 1145 { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) } 1146 } 1147 } 1148 } 1149 1150 function signal(emitter, type /*, values...*/) { 1151 var handlers = getHandlers(emitter, type) 1152 if (!handlers.length) { return } 1153 var args = Array.prototype.slice.call(arguments, 2) 1154 for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) } 1155 } 1156 1157 // The DOM events that CodeMirror handles can be overridden by 1158 // registering a (non-DOM) handler on the editor for the event name, 1159 // and preventDefault-ing the event in that handler. 1160 function signalDOMEvent(cm, e, override) { 1161 if (typeof e == "string") 1162 { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} } 1163 signal(cm, override || e.type, cm, e) 1164 return e_defaultPrevented(e) || e.codemirrorIgnore 1165 } 1166 1167 function signalCursorActivity(cm) { 1168 var arr = cm._handlers && cm._handlers.cursorActivity 1169 if (!arr) { return } 1170 var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []) 1171 for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1) 1172 { set.push(arr[i]) } } 1173 } 1174 1175 function hasHandler(emitter, type) { 1176 return getHandlers(emitter, type).length > 0 1177 } 1178 1179 // Add on and off methods to a constructor's prototype, to make 1180 // registering events on such objects more convenient. 1181 function eventMixin(ctor) { 1182 ctor.prototype.on = function(type, f) {on(this, type, f)} 1183 ctor.prototype.off = function(type, f) {off(this, type, f)} 1184 } 1185 1186 // Due to the fact that we still support jurassic IE versions, some 1187 // compatibility wrappers are needed. 1188 1189 function e_preventDefault(e) { 1190 if (e.preventDefault) { e.preventDefault() } 1191 else { e.returnValue = false } 1192 } 1193 function e_stopPropagation(e) { 1194 if (e.stopPropagation) { e.stopPropagation() } 1195 else { e.cancelBubble = true } 1196 } 1197 function e_defaultPrevented(e) { 1198 return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false 1199 } 1200 function e_stop(e) {e_preventDefault(e); e_stopPropagation(e)} 1201 1202 function e_target(e) {return e.target || e.srcElement} 1203 function e_button(e) { 1204 var b = e.which 1205 if (b == null) { 1206 if (e.button & 1) { b = 1 } 1207 else if (e.button & 2) { b = 3 } 1208 else if (e.button & 4) { b = 2 } 1209 } 1210 if (mac && e.ctrlKey && b == 1) { b = 3 } 1211 return b 1212 } 1213 1214 // Detect drag-and-drop 1215 var dragAndDrop = function() { 1216 // There is *some* kind of drag-and-drop support in IE6-8, but I 1217 // couldn't get it to work yet. 1218 if (ie && ie_version < 9) { return false } 1219 var div = elt('div') 1220 return "draggable" in div || "dragDrop" in div 1221 }() 1222 1223 var zwspSupported 1224 function zeroWidthElement(measure) { 1225 if (zwspSupported == null) { 1226 var test = elt("span", "\u200b") 1227 removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])) 1228 if (measure.firstChild.offsetHeight != 0) 1229 { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) } 1230 } 1231 var node = zwspSupported ? elt("span", "\u200b") : 1232 elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px") 1233 node.setAttribute("cm-text", "") 1234 return node 1235 } 1236 1237 // Feature-detect IE's crummy client rect reporting for bidi text 1238 var badBidiRects 1239 function hasBadBidiRects(measure) { 1240 if (badBidiRects != null) { return badBidiRects } 1241 var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")) 1242 var r0 = range(txt, 0, 1).getBoundingClientRect() 1243 var r1 = range(txt, 1, 2).getBoundingClientRect() 1244 removeChildren(measure) 1245 if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780) 1246 return badBidiRects = (r1.right - r0.right < 3) 1247 } 1248 1249 // See if "".split is the broken IE version, if so, provide an 1250 // alternative way to split lines. 1251 var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) { 1252 var pos = 0, result = [], l = string.length 1253 while (pos <= l) { 1254 var nl = string.indexOf("\n", pos) 1255 if (nl == -1) { nl = string.length } 1256 var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl) 1257 var rt = line.indexOf("\r") 1258 if (rt != -1) { 1259 result.push(line.slice(0, rt)) 1260 pos += rt + 1 1261 } else { 1262 result.push(line) 1263 pos = nl + 1 1264 } 1265 } 1266 return result 1267 } : function (string) { return string.split(/\r\n?|\n/); } 1268 1269 var hasSelection = window.getSelection ? function (te) { 1270 try { return te.selectionStart != te.selectionEnd } 1271 catch(e) { return false } 1272 } : function (te) { 1273 var range 1274 try {range = te.ownerDocument.selection.createRange()} 1275 catch(e) {} 1276 if (!range || range.parentElement() != te) { return false } 1277 return range.compareEndPoints("StartToEnd", range) != 0 1278 } 1279 1280 var hasCopyEvent = (function () { 1281 var e = elt("div") 1282 if ("oncopy" in e) { return true } 1283 e.setAttribute("oncopy", "return;") 1284 return typeof e.oncopy == "function" 1285 })() 1286 1287 var badZoomedRects = null 1288 function hasBadZoomedRects(measure) { 1289 if (badZoomedRects != null) { return badZoomedRects } 1290 var node = removeChildrenAndAdd(measure, elt("span", "x")) 1291 var normal = node.getBoundingClientRect() 1292 var fromRange = range(node, 0, 1).getBoundingClientRect() 1293 return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1 1294 } 1295 1296 var modes = {}; 1297 var mimeModes = {}; 1298 // Extra arguments are stored as the mode's dependencies, which is 1299 // used by (legacy) mechanisms like loadmode.js to automatically 1300 // load a mode. (Preferred mechanism is the require/define calls.) 1301 function defineMode(name, mode) { 1302 if (arguments.length > 2) 1303 { mode.dependencies = Array.prototype.slice.call(arguments, 2) } 1304 modes[name] = mode 1305 } 1306 1307 function defineMIME(mime, spec) { 1308 mimeModes[mime] = spec 1309 } 1310 1311 // Given a MIME type, a {name, ...options} config object, or a name 1312 // string, return a mode config object. 1313 function resolveMode(spec) { 1314 if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { 1315 spec = mimeModes[spec] 1316 } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { 1317 var found = mimeModes[spec.name] 1318 if (typeof found == "string") { found = {name: found} } 1319 spec = createObj(found, spec) 1320 spec.name = found.name 1321 } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { 1322 return resolveMode("application/xml") 1323 } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) { 1324 return resolveMode("application/json") 1325 } 1326 if (typeof spec == "string") { return {name: spec} } 1327 else { return spec || {name: "null"} } 1328 } 1329 1330 // Given a mode spec (anything that resolveMode accepts), find and 1331 // initialize an actual mode object. 1332 function getMode(options, spec) { 1333 spec = resolveMode(spec) 1334 var mfactory = modes[spec.name] 1335 if (!mfactory) { return getMode(options, "text/plain") } 1336 var modeObj = mfactory(options, spec) 1337 if (modeExtensions.hasOwnProperty(spec.name)) { 1338 var exts = modeExtensions[spec.name] 1339 for (var prop in exts) { 1340 if (!exts.hasOwnProperty(prop)) { continue } 1341 if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop] } 1342 modeObj[prop] = exts[prop] 1343 } 1344 } 1345 modeObj.name = spec.name 1346 if (spec.helperType) { modeObj.helperType = spec.helperType } 1347 if (spec.modeProps) { for (var prop$1 in spec.modeProps) 1348 { modeObj[prop$1] = spec.modeProps[prop$1] } } 1349 1350 return modeObj 1351 } 1352 1353 // This can be used to attach properties to mode objects from 1354 // outside the actual mode definition. 1355 var modeExtensions = {} 1356 function extendMode(mode, properties) { 1357 var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}) 1358 copyObj(properties, exts) 1359 } 1360 1361 function copyState(mode, state) { 1362 if (state === true) { return state } 1363 if (mode.copyState) { return mode.copyState(state) } 1364 var nstate = {} 1365 for (var n in state) { 1366 var val = state[n] 1367 if (val instanceof Array) { val = val.concat([]) } 1368 nstate[n] = val 1369 } 1370 return nstate 1371 } 1372 1373 // Given a mode and a state (for that mode), find the inner mode and 1374 // state at the position that the state refers to. 1375 function innerMode(mode, state) { 1376 var info 1377 while (mode.innerMode) { 1378 info = mode.innerMode(state) 1379 if (!info || info.mode == mode) { break } 1380 state = info.state 1381 mode = info.mode 1382 } 1383 return info || {mode: mode, state: state} 1384 } 1385 1386 function startState(mode, a1, a2) { 1387 return mode.startState ? mode.startState(a1, a2) : true 1388 } 1389 1390 // STRING STREAM 1391 1392 // Fed to the mode parsers, provides helper functions to make 1393 // parsers more succinct. 1394 1395 var StringStream = function(string, tabSize, lineOracle) { 1396 this.pos = this.start = 0 1397 this.string = string 1398 this.tabSize = tabSize || 8 1399 this.lastColumnPos = this.lastColumnValue = 0 1400 this.lineStart = 0 1401 this.lineOracle = lineOracle 1402 }; 1403 1404 StringStream.prototype.eol = function () {return this.pos >= this.string.length}; 1405 StringStream.prototype.sol = function () {return this.pos == this.lineStart}; 1406 StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined}; 1407 StringStream.prototype.next = function () { 1408 if (this.pos < this.string.length) 1409 { return this.string.charAt(this.pos++) } 1410 }; 1411 StringStream.prototype.eat = function (match) { 1412 var ch = this.string.charAt(this.pos) 1413 var ok 1414 if (typeof match == "string") { ok = ch == match } 1415 else { ok = ch && (match.test ? match.test(ch) : match(ch)) } 1416 if (ok) {++this.pos; return ch} 1417 }; 1418 StringStream.prototype.eatWhile = function (match) { 1419 var start = this.pos 1420 while (this.eat(match)){} 1421 return this.pos > start 1422 }; 1423 StringStream.prototype.eatSpace = function () { 1424 var this$1 = this; 1425 1426 var start = this.pos 1427 while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos } 1428 return this.pos > start 1429 }; 1430 StringStream.prototype.skipToEnd = function () {this.pos = this.string.length}; 1431 StringStream.prototype.skipTo = function (ch) { 1432 var found = this.string.indexOf(ch, this.pos) 1433 if (found > -1) {this.pos = found; return true} 1434 }; 1435 StringStream.prototype.backUp = function (n) {this.pos -= n}; 1436 StringStream.prototype.column = function () { 1437 if (this.lastColumnPos < this.start) { 1438 this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue) 1439 this.lastColumnPos = this.start 1440 } 1441 return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) 1442 }; 1443 StringStream.prototype.indentation = function () { 1444 return countColumn(this.string, null, this.tabSize) - 1445 (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) 1446 }; 1447 StringStream.prototype.match = function (pattern, consume, caseInsensitive) { 1448 if (typeof pattern == "string") { 1449 var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; } 1450 var substr = this.string.substr(this.pos, pattern.length) 1451 if (cased(substr) == cased(pattern)) { 1452 if (consume !== false) { this.pos += pattern.length } 1453 return true 1454 } 1455 } else { 1456 var match = this.string.slice(this.pos).match(pattern) 1457 if (match && match.index > 0) { return null } 1458 if (match && consume !== false) { this.pos += match[0].length } 1459 return match 1460 } 1461 }; 1462 StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)}; 1463 StringStream.prototype.hideFirstChars = function (n, inner) { 1464 this.lineStart += n 1465 try { return inner() } 1466 finally { this.lineStart -= n } 1467 }; 1468 StringStream.prototype.lookAhead = function (n) { 1469 var oracle = this.lineOracle 1470 return oracle && oracle.lookAhead(n) 1471 }; 1472 1473 var SavedContext = function(state, lookAhead) { 1474 this.state = state 1475 this.lookAhead = lookAhead 1476 }; 1477 1478 var Context = function(doc, state, line, lookAhead) { 1479 this.state = state 1480 this.doc = doc 1481 this.line = line 1482 this.maxLookAhead = lookAhead || 0 1483 }; 1484 1485 Context.prototype.lookAhead = function (n) { 1486 var line = this.doc.getLine(this.line + n) 1487 if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n } 1488 return line 1489 }; 1490 1491 Context.prototype.nextLine = function () { 1492 this.line++ 1493 if (this.maxLookAhead > 0) { this.maxLookAhead-- } 1494 }; 1495 1496 Context.fromSaved = function (doc, saved, line) { 1497 if (saved instanceof SavedContext) 1498 { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) } 1499 else 1500 { return new Context(doc, copyState(doc.mode, saved), line) } 1501 }; 1502 1503 Context.prototype.save = function (copy) { 1504 var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state 1505 return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state 1506 }; 1507 1508 1509 // Compute a style array (an array starting with a mode generation 1510 // -- for invalidation -- followed by pairs of end positions and 1511 // style strings), which is used to highlight the tokens on the 1512 // line. 1513 function highlightLine(cm, line, context, forceToEnd) { 1514 // A styles array always starts with a number identifying the 1515 // mode/overlays that it is based on (for easy invalidation). 1516 var st = [cm.state.modeGen], lineClasses = {} 1517 // Compute the base array of styles 1518 runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); }, 1519 lineClasses, forceToEnd) 1520 var state = context.state 1521 1522 // Run overlays, adjust style array. 1523 var loop = function ( o ) { 1524 var overlay = cm.state.overlays[o], i = 1, at = 0 1525 context.state = true 1526 runMode(cm, line.text, overlay.mode, context, function (end, style) { 1527 var start = i 1528 // Ensure there's a token end at the current position, and that i points at it 1529 while (at < end) { 1530 var i_end = st[i] 1531 if (i_end > end) 1532 { st.splice(i, 1, end, st[i+1], i_end) } 1533 i += 2 1534 at = Math.min(end, i_end) 1535 } 1536 if (!style) { return } 1537 if (overlay.opaque) { 1538 st.splice(start, i - start, end, "overlay " + style) 1539 i = start + 2 1540 } else { 1541 for (; start < i; start += 2) { 1542 var cur = st[start+1] 1543 st[start+1] = (cur ? cur + " " : "") + "overlay " + style 1544 } 1545 } 1546 }, lineClasses) 1547 }; 1548 1549 for (var o = 0; o < cm.state.overlays.length; ++o) loop( o ); 1550 context.state = state 1551 1552 return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null} 1553 } 1554 1555 function getLineStyles(cm, line, updateFrontier) { 1556 if (!line.styles || line.styles[0] != cm.state.modeGen) { 1557 var context = getContextBefore(cm, lineNo(line)) 1558 var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state) 1559 var result = highlightLine(cm, line, context) 1560 if (resetState) { context.state = resetState } 1561 line.stateAfter = context.save(!resetState) 1562 line.styles = result.styles 1563 if (result.classes) { line.styleClasses = result.classes } 1564 else if (line.styleClasses) { line.styleClasses = null } 1565 if (updateFrontier === cm.doc.highlightFrontier) 1566 { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier) } 1567 } 1568 return line.styles 1569 } 1570 1571 function getContextBefore(cm, n, precise) { 1572 var doc = cm.doc, display = cm.display 1573 if (!doc.mode.startState) { return new Context(doc, true, n) } 1574 var start = findStartLine(cm, n, precise) 1575 var saved = start > doc.first && getLine(doc, start - 1).stateAfter 1576 var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start) 1577 1578 doc.iter(start, n, function (line) { 1579 processLine(cm, line.text, context) 1580 var pos = context.line 1581 line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null 1582 context.nextLine() 1583 }) 1584 if (precise) { doc.modeFrontier = context.line } 1585 return context 1586 } 1587 1588 // Lightweight form of highlight -- proceed over this line and 1589 // update state, but don't save a style array. Used for lines that 1590 // aren't currently visible. 1591 function processLine(cm, text, context, startAt) { 1592 var mode = cm.doc.mode 1593 var stream = new StringStream(text, cm.options.tabSize, context) 1594 stream.start = stream.pos = startAt || 0 1595 if (text == "") { callBlankLine(mode, context.state) } 1596 while (!stream.eol()) { 1597 readToken(mode, stream, context.state) 1598 stream.start = stream.pos 1599 } 1600 } 1601 1602 function callBlankLine(mode, state) { 1603 if (mode.blankLine) { return mode.blankLine(state) } 1604 if (!mode.innerMode) { return } 1605 var inner = innerMode(mode, state) 1606 if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) } 1607 } 1608 1609 function readToken(mode, stream, state, inner) { 1610 for (var i = 0; i < 10; i++) { 1611 if (inner) { inner[0] = innerMode(mode, state).mode } 1612 var style = mode.token(stream, state) 1613 if (stream.pos > stream.start) { return style } 1614 } 1615 throw new Error("Mode " + mode.name + " failed to advance stream.") 1616 } 1617 1618 var Token = function(stream, type, state) { 1619 this.start = stream.start; this.end = stream.pos 1620 this.string = stream.current() 1621 this.type = type || null 1622 this.state = state 1623 }; 1624 1625 // Utility for getTokenAt and getLineTokens 1626 function takeToken(cm, pos, precise, asArray) { 1627 var doc = cm.doc, mode = doc.mode, style 1628 pos = clipPos(doc, pos) 1629 var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise) 1630 var stream = new StringStream(line.text, cm.options.tabSize, context), tokens 1631 if (asArray) { tokens = [] } 1632 while ((asArray || stream.pos < pos.ch) && !stream.eol()) { 1633 stream.start = stream.pos 1634 style = readToken(mode, stream, context.state) 1635 if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))) } 1636 } 1637 return asArray ? tokens : new Token(stream, style, context.state) 1638 } 1639 1640 function extractLineClasses(type, output) { 1641 if (type) { for (;;) { 1642 var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/) 1643 if (!lineClass) { break } 1644 type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length) 1645 var prop = lineClass[1] ? "bgClass" : "textClass" 1646 if (output[prop] == null) 1647 { output[prop] = lineClass[2] } 1648 else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) 1649 { output[prop] += " " + lineClass[2] } 1650 } } 1651 return type 1652 } 1653 1654 // Run the given mode's parser over a line, calling f for each token. 1655 function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) { 1656 var flattenSpans = mode.flattenSpans 1657 if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans } 1658 var curStart = 0, curStyle = null 1659 var stream = new StringStream(text, cm.options.tabSize, context), style 1660 var inner = cm.options.addModeClass && [null] 1661 if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses) } 1662 while (!stream.eol()) { 1663 if (stream.pos > cm.options.maxHighlightLength) { 1664 flattenSpans = false 1665 if (forceToEnd) { processLine(cm, text, context, stream.pos) } 1666 stream.pos = text.length 1667 style = null 1668 } else { 1669 style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses) 1670 } 1671 if (inner) { 1672 var mName = inner[0].name 1673 if (mName) { style = "m-" + (style ? mName + " " + style : mName) } 1674 } 1675 if (!flattenSpans || curStyle != style) { 1676 while (curStart < stream.start) { 1677 curStart = Math.min(stream.start, curStart + 5000) 1678 f(curStart, curStyle) 1679 } 1680 curStyle = style 1681 } 1682 stream.start = stream.pos 1683 } 1684 while (curStart < stream.pos) { 1685 // Webkit seems to refuse to render text nodes longer than 57444 1686 // characters, and returns inaccurate measurements in nodes 1687 // starting around 5000 chars. 1688 var pos = Math.min(stream.pos, curStart + 5000) 1689 f(pos, curStyle) 1690 curStart = pos 1691 } 1692 } 1693 1694 // Finds the line to start with when starting a parse. Tries to 1695 // find a line with a stateAfter, so that it can start with a 1696 // valid state. If that fails, it returns the line with the 1697 // smallest indentation, which tends to need the least context to 1698 // parse correctly. 1699 function findStartLine(cm, n, precise) { 1700 var minindent, minline, doc = cm.doc 1701 var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100) 1702 for (var search = n; search > lim; --search) { 1703 if (search <= doc.first) { return doc.first } 1704 var line = getLine(doc, search - 1), after = line.stateAfter 1705 if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier)) 1706 { return search } 1707 var indented = countColumn(line.text, null, cm.options.tabSize) 1708 if (minline == null || minindent > indented) { 1709 minline = search - 1 1710 minindent = indented 1711 } 1712 } 1713 return minline 1714 } 1715 1716 function retreatFrontier(doc, n) { 1717 doc.modeFrontier = Math.min(doc.modeFrontier, n) 1718 if (doc.highlightFrontier < n - 10) { return } 1719 var start = doc.first 1720 for (var line = n - 1; line > start; line--) { 1721 var saved = getLine(doc, line).stateAfter 1722 // change is on 3 1723 // state on line 1 looked ahead 2 -- so saw 3 1724 // test 1 + 2 < 3 should cover this 1725 if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) { 1726 start = line + 1 1727 break 1728 } 1729 } 1730 doc.highlightFrontier = Math.min(doc.highlightFrontier, start) 1731 } 1732 1733 // LINE DATA STRUCTURE 1734 1735 // Line objects. These hold state related to a line, including 1736 // highlighting info (the styles array). 1737 var Line = function(text, markedSpans, estimateHeight) { 1738 this.text = text 1739 attachMarkedSpans(this, markedSpans) 1740 this.height = estimateHeight ? estimateHeight(this) : 1 1741 }; 1742 1743 Line.prototype.lineNo = function () { return lineNo(this) }; 1744 eventMixin(Line) 1745 1746 // Change the content (text, markers) of a line. Automatically 1747 // invalidates cached information and tries to re-estimate the 1748 // line's height. 1749 function updateLine(line, text, markedSpans, estimateHeight) { 1750 line.text = text 1751 if (line.stateAfter) { line.stateAfter = null } 1752 if (line.styles) { line.styles = null } 1753 if (line.order != null) { line.order = null } 1754 detachMarkedSpans(line) 1755 attachMarkedSpans(line, markedSpans) 1756 var estHeight = estimateHeight ? estimateHeight(line) : 1 1757 if (estHeight != line.height) { updateLineHeight(line, estHeight) } 1758 } 1759 1760 // Detach a line from the document tree and its markers. 1761 function cleanUpLine(line) { 1762 line.parent = null 1763 detachMarkedSpans(line) 1764 } 1765 1766 // Convert a style as returned by a mode (either null, or a string 1767 // containing one or more styles) to a CSS style. This is cached, 1768 // and also looks for line-wide styles. 1769 var styleToClassCache = {}; 1770 var styleToClassCacheWithMode = {}; 1771 function interpretTokenStyle(style, options) { 1772 if (!style || /^\s*$/.test(style)) { return null } 1773 var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache 1774 return cache[style] || 1775 (cache[style] = style.replace(/\S+/g, "cm-$&")) 1776 } 1777 1778 // Render the DOM representation of the text of a line. Also builds 1779 // up a 'line map', which points at the DOM nodes that represent 1780 // specific stretches of text, and is used by the measuring code. 1781 // The returned object contains the DOM node, this map, and 1782 // information about line-wide styles that were set by the mode. 1783 function buildLineContent(cm, lineView) { 1784 // The padding-right forces the element to have a 'border', which 1785 // is needed on Webkit to be able to get line-level bounding 1786 // rectangles for it (in measureChar). 1787 var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null) 1788 var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content, 1789 col: 0, pos: 0, cm: cm, 1790 trailingSpace: false, 1791 splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")} 1792 lineView.measure = {} 1793 1794 // Iterate over the logical lines that make up this visual line. 1795 for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { 1796 var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0) 1797 builder.pos = 0 1798 builder.addToken = buildToken 1799 // Optionally wire in some hacks into the token-rendering 1800 // algorithm, to deal with browser quirks. 1801 if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) 1802 { builder.addToken = buildTokenBadBidi(builder.addToken, order) } 1803 builder.map = [] 1804 var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line) 1805 insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)) 1806 if (line.styleClasses) { 1807 if (line.styleClasses.bgClass) 1808 { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "") } 1809 if (line.styleClasses.textClass) 1810 { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "") } 1811 } 1812 1813 // Ensure at least a single node is present, for measuring. 1814 if (builder.map.length == 0) 1815 { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) } 1816 1817 // Store the map and a cache object for the current logical line 1818 if (i == 0) { 1819 lineView.measure.map = builder.map 1820 lineView.measure.cache = {} 1821 } else { 1822 ;(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map) 1823 ;(lineView.measure.caches || (lineView.measure.caches = [])).push({}) 1824 } 1825 } 1826 1827 // See issue #2901 1828 if (webkit) { 1829 var last = builder.content.lastChild 1830 if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab"))) 1831 { builder.content.className = "cm-tab-wrap-hack" } 1832 } 1833 1834 signal(cm, "renderLine", cm, lineView.line, builder.pre) 1835 if (builder.pre.className) 1836 { builder.textClass = joinClasses(builder.pre.className, builder.textClass || "") } 1837 1838 return builder 1839 } 1840 1841 function defaultSpecialCharPlaceholder(ch) { 1842 var token = elt("span", "\u2022", "cm-invalidchar") 1843 token.title = "\\u" + ch.charCodeAt(0).toString(16) 1844 token.setAttribute("aria-label", token.title) 1845 return token 1846 } 1847 1848 // Build up the DOM representation for a single token, and add it to 1849 // the line map. Takes care to render special characters separately. 1850 function buildToken(builder, text, style, startStyle, endStyle, title, css) { 1851 if (!text) { return } 1852 var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text 1853 var special = builder.cm.state.specialChars, mustWrap = false 1854 var content 1855 if (!special.test(text)) { 1856 builder.col += text.length 1857 content = document.createTextNode(displayText) 1858 builder.map.push(builder.pos, builder.pos + text.length, content) 1859 if (ie && ie_version < 9) { mustWrap = true } 1860 builder.pos += text.length 1861 } else { 1862 content = document.createDocumentFragment() 1863 var pos = 0 1864 while (true) { 1865 special.lastIndex = pos 1866 var m = special.exec(text) 1867 var skipped = m ? m.index - pos : text.length - pos 1868 if (skipped) { 1869 var txt = document.createTextNode(displayText.slice(pos, pos + skipped)) 1870 if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])) } 1871 else { content.appendChild(txt) } 1872 builder.map.push(builder.pos, builder.pos + skipped, txt) 1873 builder.col += skipped 1874 builder.pos += skipped 1875 } 1876 if (!m) { break } 1877 pos += skipped + 1 1878 var txt$1 = (void 0) 1879 if (m[0] == "\t") { 1880 var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize 1881 txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")) 1882 txt$1.setAttribute("role", "presentation") 1883 txt$1.setAttribute("cm-text", "\t") 1884 builder.col += tabWidth 1885 } else if (m[0] == "\r" || m[0] == "\n") { 1886 txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar")) 1887 txt$1.setAttribute("cm-text", m[0]) 1888 builder.col += 1 1889 } else { 1890 txt$1 = builder.cm.options.specialCharPlaceholder(m[0]) 1891 txt$1.setAttribute("cm-text", m[0]) 1892 if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])) } 1893 else { content.appendChild(txt$1) } 1894 builder.col += 1 1895 } 1896 builder.map.push(builder.pos, builder.pos + 1, txt$1) 1897 builder.pos++ 1898 } 1899 } 1900 builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32 1901 if (style || startStyle || endStyle || mustWrap || css) { 1902 var fullStyle = style || "" 1903 if (startStyle) { fullStyle += startStyle } 1904 if (endStyle) { fullStyle += endStyle } 1905 var token = elt("span", [content], fullStyle, css) 1906 if (title) { token.title = title } 1907 return builder.content.appendChild(token) 1908 } 1909 builder.content.appendChild(content) 1910 } 1911 1912 function splitSpaces(text, trailingBefore) { 1913 if (text.length > 1 && !/ /.test(text)) { return text } 1914 var spaceBefore = trailingBefore, result = "" 1915 for (var i = 0; i < text.length; i++) { 1916 var ch = text.charAt(i) 1917 if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32)) 1918 { ch = "\u00a0" } 1919 result += ch 1920 spaceBefore = ch == " " 1921 } 1922 return result 1923 } 1924 1925 // Work around nonsense dimensions being reported for stretches of 1926 // right-to-left text. 1927 function buildTokenBadBidi(inner, order) { 1928 return function (builder, text, style, startStyle, endStyle, title, css) { 1929 style = style ? style + " cm-force-border" : "cm-force-border" 1930 var start = builder.pos, end = start + text.length 1931 for (;;) { 1932 // Find the part that overlaps with the start of this text 1933 var part = (void 0) 1934 for (var i = 0; i < order.length; i++) { 1935 part = order[i] 1936 if (part.to > start && part.from <= start) { break } 1937 } 1938 if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) } 1939 inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css) 1940 startStyle = null 1941 text = text.slice(part.to - start) 1942 start = part.to 1943 } 1944 } 1945 } 1946 1947 function buildCollapsedSpan(builder, size, marker, ignoreWidget) { 1948 var widget = !ignoreWidget && marker.widgetNode 1949 if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) } 1950 if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { 1951 if (!widget) 1952 { widget = builder.content.appendChild(document.createElement("span")) } 1953 widget.setAttribute("cm-marker", marker.id) 1954 } 1955 if (widget) { 1956 builder.cm.display.input.setUneditable(widget) 1957 builder.content.appendChild(widget) 1958 } 1959 builder.pos += size 1960 builder.trailingSpace = false 1961 } 1962 1963 // Outputs a number of spans to make up a line, taking highlighting 1964 // and marked text into account. 1965 function insertLineContent(line, builder, styles) { 1966 var spans = line.markedSpans, allText = line.text, at = 0 1967 if (!spans) { 1968 for (var i$1 = 1; i$1 < styles.length; i$1+=2) 1969 { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) } 1970 return 1971 } 1972 1973 var len = allText.length, pos = 0, i = 1, text = "", style, css 1974 var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed 1975 for (;;) { 1976 if (nextChange == pos) { // Update current marker set 1977 spanStyle = spanEndStyle = spanStartStyle = title = css = "" 1978 collapsed = null; nextChange = Infinity 1979 var foundBookmarks = [], endStyles = (void 0) 1980 for (var j = 0; j < spans.length; ++j) { 1981 var sp = spans[j], m = sp.marker 1982 if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { 1983 foundBookmarks.push(m) 1984 } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { 1985 if (sp.to != null && sp.to != pos && nextChange > sp.to) { 1986 nextChange = sp.to 1987 spanEndStyle = "" 1988 } 1989 if (m.className) { spanStyle += " " + m.className } 1990 if (m.css) { css = (css ? css + ";" : "") + m.css } 1991 if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle } 1992 if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to) } 1993 if (m.title && !title) { title = m.title } 1994 if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) 1995 { collapsed = sp } 1996 } else if (sp.from > pos && nextChange > sp.from) { 1997 nextChange = sp.from 1998 } 1999 } 2000 if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) 2001 { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1] } } } 2002 2003 if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) 2004 { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } } 2005 if (collapsed && (collapsed.from || 0) == pos) { 2006 buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, 2007 collapsed.marker, collapsed.from == null) 2008 if (collapsed.to == null) { return } 2009 if (collapsed.to == pos) { collapsed = false } 2010 } 2011 } 2012 if (pos >= len) { break } 2013 2014 var upto = Math.min(len, nextChange) 2015 while (true) { 2016 if (text) { 2017 var end = pos + text.length 2018 if (!collapsed) { 2019 var tokenText = end > upto ? text.slice(0, upto - pos) : text 2020 builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, 2021 spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css) 2022 } 2023 if (end >= upto) {text = text.slice(upto - pos); pos = upto; break} 2024 pos = end 2025 spanStartStyle = "" 2026 } 2027 text = allText.slice(at, at = styles[i++]) 2028 style = interpretTokenStyle(styles[i++], builder.cm.options) 2029 } 2030 } 2031 } 2032 2033 2034 // These objects are used to represent the visible (currently drawn) 2035 // part of the document. A LineView may correspond to multiple 2036 // logical lines, if those are connected by collapsed ranges. 2037 function LineView(doc, line, lineN) { 2038 // The starting line 2039 this.line = line 2040 // Continuing lines, if any 2041 this.rest = visualLineContinued(line) 2042 // Number of logical lines in this visual line 2043 this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1 2044 this.node = this.text = null 2045 this.hidden = lineIsHidden(doc, line) 2046 } 2047 2048 // Create a range of LineView objects for the given lines. 2049 function buildViewArray(cm, from, to) { 2050 var array = [], nextPos 2051 for (var pos = from; pos < to; pos = nextPos) { 2052 var view = new LineView(cm.doc, getLine(cm.doc, pos), pos) 2053 nextPos = pos + view.size 2054 array.push(view) 2055 } 2056 return array 2057 } 2058 2059 var operationGroup = null 2060 2061 function pushOperation(op) { 2062 if (operationGroup) { 2063 operationGroup.ops.push(op) 2064 } else { 2065 op.ownsGroup = operationGroup = { 2066 ops: [op], 2067 delayedCallbacks: [] 2068 } 2069 } 2070 } 2071 2072 function fireCallbacksForOps(group) { 2073 // Calls delayed callbacks and cursorActivity handlers until no 2074 // new ones appear 2075 var callbacks = group.delayedCallbacks, i = 0 2076 do { 2077 for (; i < callbacks.length; i++) 2078 { callbacks[i].call(null) } 2079 for (var j = 0; j < group.ops.length; j++) { 2080 var op = group.ops[j] 2081 if (op.cursorActivityHandlers) 2082 { while (op.cursorActivityCalled < op.cursorActivityHandlers.length) 2083 { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } } 2084 } 2085 } while (i < callbacks.length) 2086 } 2087 2088 function finishOperation(op, endCb) { 2089 var group = op.ownsGroup 2090 if (!group) { return } 2091 2092 try { fireCallbacksForOps(group) } 2093 finally { 2094 operationGroup = null 2095 endCb(group) 2096 } 2097 } 2098 2099 var orphanDelayedCallbacks = null 2100 2101 // Often, we want to signal events at a point where we are in the 2102 // middle of some work, but don't want the handler to start calling 2103 // other methods on the editor, which might be in an inconsistent 2104 // state or simply not expect any other events to happen. 2105 // signalLater looks whether there are any handlers, and schedules 2106 // them to be executed when the last operation ends, or, if no 2107 // operation is active, when a timeout fires. 2108 function signalLater(emitter, type /*, values...*/) { 2109 var arr = getHandlers(emitter, type) 2110 if (!arr.length) { return } 2111 var args = Array.prototype.slice.call(arguments, 2), list 2112 if (operationGroup) { 2113 list = operationGroup.delayedCallbacks 2114 } else if (orphanDelayedCallbacks) { 2115 list = orphanDelayedCallbacks 2116 } else { 2117 list = orphanDelayedCallbacks = [] 2118 setTimeout(fireOrphanDelayed, 0) 2119 } 2120 var loop = function ( i ) { 2121 list.push(function () { return arr[i].apply(null, args); }) 2122 }; 2123 2124 for (var i = 0; i < arr.length; ++i) 2125 loop( i ); 2126 } 2127 2128 function fireOrphanDelayed() { 2129 var delayed = orphanDelayedCallbacks 2130 orphanDelayedCallbacks = null 2131 for (var i = 0; i < delayed.length; ++i) { delayed[i]() } 2132 } 2133 2134 // When an aspect of a line changes, a string is added to 2135 // lineView.changes. This updates the relevant part of the line's 2136 // DOM structure. 2137 function updateLineForChanges(cm, lineView, lineN, dims) { 2138 for (var j = 0; j < lineView.changes.length; j++) { 2139 var type = lineView.changes[j] 2140 if (type == "text") { updateLineText(cm, lineView) } 2141 else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims) } 2142 else if (type == "class") { updateLineClasses(cm, lineView) } 2143 else if (type == "widget") { updateLineWidgets(cm, lineView, dims) } 2144 } 2145 lineView.changes = null 2146 } 2147 2148 // Lines with gutter elements, widgets or a background class need to 2149 // be wrapped, and have the extra elements added to the wrapper div 2150 function ensureLineWrapped(lineView) { 2151 if (lineView.node == lineView.text) { 2152 lineView.node = elt("div", null, null, "position: relative") 2153 if (lineView.text.parentNode) 2154 { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) } 2155 lineView.node.appendChild(lineView.text) 2156 if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 } 2157 } 2158 return lineView.node 2159 } 2160 2161 function updateLineBackground(cm, lineView) { 2162 var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass 2163 if (cls) { cls += " CodeMirror-linebackground" } 2164 if (lineView.background) { 2165 if (cls) { lineView.background.className = cls } 2166 else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null } 2167 } else if (cls) { 2168 var wrap = ensureLineWrapped(lineView) 2169 lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild) 2170 cm.display.input.setUneditable(lineView.background) 2171 } 2172 } 2173 2174 // Wrapper around buildLineContent which will reuse the structure 2175 // in display.externalMeasured when possible. 2176 function getLineContent(cm, lineView) { 2177 var ext = cm.display.externalMeasured 2178 if (ext && ext.line == lineView.line) { 2179 cm.display.externalMeasured = null 2180 lineView.measure = ext.measure 2181 return ext.built 2182 } 2183 return buildLineContent(cm, lineView) 2184 } 2185 2186 // Redraw the line's text. Interacts with the background and text 2187 // classes because the mode may output tokens that influence these 2188 // classes. 2189 function updateLineText(cm, lineView) { 2190 var cls = lineView.text.className 2191 var built = getLineContent(cm, lineView) 2192 if (lineView.text == lineView.node) { lineView.node = built.pre } 2193 lineView.text.parentNode.replaceChild(built.pre, lineView.text) 2194 lineView.text = built.pre 2195 if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { 2196 lineView.bgClass = built.bgClass 2197 lineView.textClass = built.textClass 2198 updateLineClasses(cm, lineView) 2199 } else if (cls) { 2200 lineView.text.className = cls 2201 } 2202 } 2203 2204 function updateLineClasses(cm, lineView) { 2205 updateLineBackground(cm, lineView) 2206 if (lineView.line.wrapClass) 2207 { ensureLineWrapped(lineView).className = lineView.line.wrapClass } 2208 else if (lineView.node != lineView.text) 2209 { lineView.node.className = "" } 2210 var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass 2211 lineView.text.className = textClass || "" 2212 } 2213 2214 function updateLineGutter(cm, lineView, lineN, dims) { 2215 if (lineView.gutter) { 2216 lineView.node.removeChild(lineView.gutter) 2217 lineView.gutter = null 2218 } 2219 if (lineView.gutterBackground) { 2220 lineView.node.removeChild(lineView.gutterBackground) 2221 lineView.gutterBackground = null 2222 } 2223 if (lineView.line.gutterClass) { 2224 var wrap = ensureLineWrapped(lineView) 2225 lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass, 2226 ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px")) 2227 cm.display.input.setUneditable(lineView.gutterBackground) 2228 wrap.insertBefore(lineView.gutterBackground, lineView.text) 2229 } 2230 var markers = lineView.line.gutterMarkers 2231 if (cm.options.lineNumbers || markers) { 2232 var wrap$1 = ensureLineWrapped(lineView) 2233 var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px")) 2234 cm.display.input.setUneditable(gutterWrap) 2235 wrap$1.insertBefore(gutterWrap, lineView.text) 2236 if (lineView.line.gutterClass) 2237 { gutterWrap.className += " " + lineView.line.gutterClass } 2238 if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) 2239 { lineView.lineNumber = gutterWrap.appendChild( 2240 elt("div", lineNumberFor(cm.options, lineN), 2241 "CodeMirror-linenumber CodeMirror-gutter-elt", 2242 ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))) } 2243 if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) { 2244 var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id] 2245 if (found) 2246 { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", 2247 ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))) } 2248 } } 2249 } 2250 } 2251 2252 function updateLineWidgets(cm, lineView, dims) { 2253 if (lineView.alignable) { lineView.alignable = null } 2254 for (var node = lineView.node.firstChild, next = (void 0); node; node = next) { 2255 next = node.nextSibling 2256 if (node.className == "CodeMirror-linewidget") 2257 { lineView.node.removeChild(node) } 2258 } 2259 insertLineWidgets(cm, lineView, dims) 2260 } 2261 2262 // Build a line's DOM representation from scratch 2263 function buildLineElement(cm, lineView, lineN, dims) { 2264 var built = getLineContent(cm, lineView) 2265 lineView.text = lineView.node = built.pre 2266 if (built.bgClass) { lineView.bgClass = built.bgClass } 2267 if (built.textClass) { lineView.textClass = built.textClass } 2268 2269 updateLineClasses(cm, lineView) 2270 updateLineGutter(cm, lineView, lineN, dims) 2271 insertLineWidgets(cm, lineView, dims) 2272 return lineView.node 2273 } 2274 2275 // A lineView may contain multiple logical lines (when merged by 2276 // collapsed spans). The widgets for all of them need to be drawn. 2277 function insertLineWidgets(cm, lineView, dims) { 2278 insertLineWidgetsFor(cm, lineView.line, lineView, dims, true) 2279 if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) 2280 { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } } 2281 } 2282 2283 function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { 2284 if (!line.widgets) { return } 2285 var wrap = ensureLineWrapped(lineView) 2286 for (var i = 0, ws = line.widgets; i < ws.length; ++i) { 2287 var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget") 2288 if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true") } 2289 positionLineWidget(widget, node, lineView, dims) 2290 cm.display.input.setUneditable(node) 2291 if (allowAbove && widget.above) 2292 { wrap.insertBefore(node, lineView.gutter || lineView.text) } 2293 else 2294 { wrap.appendChild(node) } 2295 signalLater(widget, "redraw") 2296 } 2297 } 2298 2299 function positionLineWidget(widget, node, lineView, dims) { 2300 if (widget.noHScroll) { 2301 ;(lineView.alignable || (lineView.alignable = [])).push(node) 2302 var width = dims.wrapperWidth 2303 node.style.left = dims.fixedPos + "px" 2304 if (!widget.coverGutter) { 2305 width -= dims.gutterTotalWidth 2306 node.style.paddingLeft = dims.gutterTotalWidth + "px" 2307 } 2308 node.style.width = width + "px" 2309 } 2310 if (widget.coverGutter) { 2311 node.style.zIndex = 5 2312 node.style.position = "relative" 2313 if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px" } 2314 } 2315 } 2316 2317 function widgetHeight(widget) { 2318 if (widget.height != null) { return widget.height } 2319 var cm = widget.doc.cm 2320 if (!cm) { return 0 } 2321 if (!contains(document.body, widget.node)) { 2322 var parentStyle = "position: relative;" 2323 if (widget.coverGutter) 2324 { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;" } 2325 if (widget.noHScroll) 2326 { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;" } 2327 removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)) 2328 } 2329 return widget.height = widget.node.parentNode.offsetHeight 2330 } 2331 2332 // Return true when the given mouse event happened in a widget 2333 function eventInWidget(display, e) { 2334 for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { 2335 if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || 2336 (n.parentNode == display.sizer && n != display.mover)) 2337 { return true } 2338 } 2339 } 2340 2341 // POSITION MEASUREMENT 2342 2343 function paddingTop(display) {return display.lineSpace.offsetTop} 2344 function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight} 2345 function paddingH(display) { 2346 if (display.cachedPaddingH) { return display.cachedPaddingH } 2347 var e = removeChildrenAndAdd(display.measure, elt("pre", "x")) 2348 var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle 2349 var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)} 2350 if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data } 2351 return data 2352 } 2353 2354 function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth } 2355 function displayWidth(cm) { 2356 return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth 2357 } 2358 function displayHeight(cm) { 2359 return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight 2360 } 2361 2362 // Ensure the lineView.wrapping.heights array is populated. This is 2363 // an array of bottom offsets for the lines that make up a drawn 2364 // line. When lineWrapping is on, there might be more than one 2365 // height. 2366 function ensureLineHeights(cm, lineView, rect) { 2367 var wrapping = cm.options.lineWrapping 2368 var curWidth = wrapping && displayWidth(cm) 2369 if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { 2370 var heights = lineView.measure.heights = [] 2371 if (wrapping) { 2372 lineView.measure.width = curWidth 2373 var rects = lineView.text.firstChild.getClientRects() 2374 for (var i = 0; i < rects.length - 1; i++) { 2375 var cur = rects[i], next = rects[i + 1] 2376 if (Math.abs(cur.bottom - next.bottom) > 2) 2377 { heights.push((cur.bottom + next.top) / 2 - rect.top) } 2378 } 2379 } 2380 heights.push(rect.bottom - rect.top) 2381 } 2382 } 2383 2384 // Find a line map (mapping character offsets to text nodes) and a 2385 // measurement cache for the given line number. (A line view might 2386 // contain multiple lines when collapsed ranges are present.) 2387 function mapFromLineView(lineView, line, lineN) { 2388 if (lineView.line == line) 2389 { return {map: lineView.measure.map, cache: lineView.measure.cache} } 2390 for (var i = 0; i < lineView.rest.length; i++) 2391 { if (lineView.rest[i] == line) 2392 { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } } 2393 for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) 2394 { if (lineNo(lineView.rest[i$1]) > lineN) 2395 { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } } 2396 } 2397 2398 // Render a line into the hidden node display.externalMeasured. Used 2399 // when measurement is needed for a line that's not in the viewport. 2400 function updateExternalMeasurement(cm, line) { 2401 line = visualLine(line) 2402 var lineN = lineNo(line) 2403 var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN) 2404 view.lineN = lineN 2405 var built = view.built = buildLineContent(cm, view) 2406 view.text = built.pre 2407 removeChildrenAndAdd(cm.display.lineMeasure, built.pre) 2408 return view 2409 } 2410 2411 // Get a {top, bottom, left, right} box (in line-local coordinates) 2412 // for a given character. 2413 function measureChar(cm, line, ch, bias) { 2414 return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias) 2415 } 2416 2417 // Find a line view that corresponds to the given line number. 2418 function findViewForLine(cm, lineN) { 2419 if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) 2420 { return cm.display.view[findViewIndex(cm, lineN)] } 2421 var ext = cm.display.externalMeasured 2422 if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) 2423 { return ext } 2424 } 2425 2426 // Measurement can be split in two steps, the set-up work that 2427 // applies to the whole line, and the measurement of the actual 2428 // character. Functions like coordsChar, that need to do a lot of 2429 // measurements in a row, can thus ensure that the set-up work is 2430 // only done once. 2431 function prepareMeasureForLine(cm, line) { 2432 var lineN = lineNo(line) 2433 var view = findViewForLine(cm, lineN) 2434 if (view && !view.text) { 2435 view = null 2436 } else if (view && view.changes) { 2437 updateLineForChanges(cm, view, lineN, getDimensions(cm)) 2438 cm.curOp.forceUpdate = true 2439 } 2440 if (!view) 2441 { view = updateExternalMeasurement(cm, line) } 2442 2443 var info = mapFromLineView(view, line, lineN) 2444 return { 2445 line: line, view: view, rect: null, 2446 map: info.map, cache: info.cache, before: info.before, 2447 hasHeights: false 2448 } 2449 } 2450 2451 // Given a prepared measurement object, measures the position of an 2452 // actual character (or fetches it from the cache). 2453 function measureCharPrepared(cm, prepared, ch, bias, varHeight) { 2454 if (prepared.before) { ch = -1 } 2455 var key = ch + (bias || ""), found 2456 if (prepared.cache.hasOwnProperty(key)) { 2457 found = prepared.cache[key] 2458 } else { 2459 if (!prepared.rect) 2460 { prepared.rect = prepared.view.text.getBoundingClientRect() } 2461 if (!prepared.hasHeights) { 2462 ensureLineHeights(cm, prepared.view, prepared.rect) 2463 prepared.hasHeights = true 2464 } 2465 found = measureCharInner(cm, prepared, ch, bias) 2466 if (!found.bogus) { prepared.cache[key] = found } 2467 } 2468 return {left: found.left, right: found.right, 2469 top: varHeight ? found.rtop : found.top, 2470 bottom: varHeight ? found.rbottom : found.bottom} 2471 } 2472 2473 var nullRect = {left: 0, right: 0, top: 0, bottom: 0} 2474 2475 function nodeAndOffsetInLineMap(map, ch, bias) { 2476 var node, start, end, collapse, mStart, mEnd 2477 // First, search the line map for the text node corresponding to, 2478 // or closest to, the target character. 2479 for (var i = 0; i < map.length; i += 3) { 2480 mStart = map[i] 2481 mEnd = map[i + 1] 2482 if (ch < mStart) { 2483 start = 0; end = 1 2484 collapse = "left" 2485 } else if (ch < mEnd) { 2486 start = ch - mStart 2487 end = start + 1 2488 } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { 2489 end = mEnd - mStart 2490 start = end - 1 2491 if (ch >= mEnd) { collapse = "right" } 2492 } 2493 if (start != null) { 2494 node = map[i + 2] 2495 if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) 2496 { collapse = bias } 2497 if (bias == "left" && start == 0) 2498 { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { 2499 node = map[(i -= 3) + 2] 2500 collapse = "left" 2501 } } 2502 if (bias == "right" && start == mEnd - mStart) 2503 { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { 2504 node = map[(i += 3) + 2] 2505 collapse = "right" 2506 } } 2507 break 2508 } 2509 } 2510 return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd} 2511 } 2512 2513 function getUsefulRect(rects, bias) { 2514 var rect = nullRect 2515 if (bias == "left") { for (var i = 0; i < rects.length; i++) { 2516 if ((rect = rects[i]).left != rect.right) { break } 2517 } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) { 2518 if ((rect = rects[i$1]).left != rect.right) { break } 2519 } } 2520 return rect 2521 } 2522 2523 function measureCharInner(cm, prepared, ch, bias) { 2524 var place = nodeAndOffsetInLineMap(prepared.map, ch, bias) 2525 var node = place.node, start = place.start, end = place.end, collapse = place.collapse 2526 2527 var rect 2528 if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. 2529 for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned 2530 while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start } 2531 while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end } 2532 if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) 2533 { rect = node.parentNode.getBoundingClientRect() } 2534 else 2535 { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) } 2536 if (rect.left || rect.right || start == 0) { break } 2537 end = start 2538 start = start - 1 2539 collapse = "right" 2540 } 2541 if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) } 2542 } else { // If it is a widget, simply get the box for the whole widget. 2543 if (start > 0) { collapse = bias = "right" } 2544 var rects 2545 if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) 2546 { rect = rects[bias == "right" ? rects.length - 1 : 0] } 2547 else 2548 { rect = node.getBoundingClientRect() } 2549 } 2550 if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { 2551 var rSpan = node.parentNode.getClientRects()[0] 2552 if (rSpan) 2553 { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} } 2554 else 2555 { rect = nullRect } 2556 } 2557 2558 var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top 2559 var mid = (rtop + rbot) / 2 2560 var heights = prepared.view.measure.heights 2561 var i = 0 2562 for (; i < heights.length - 1; i++) 2563 { if (mid < heights[i]) { break } } 2564 var top = i ? heights[i - 1] : 0, bot = heights[i] 2565 var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, 2566 right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, 2567 top: top, bottom: bot} 2568 if (!rect.left && !rect.right) { result.bogus = true } 2569 if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot } 2570 2571 return result 2572 } 2573 2574 // Work around problem with bounding client rects on ranges being 2575 // returned incorrectly when zoomed on IE10 and below. 2576 function maybeUpdateRectForZooming(measure, rect) { 2577 if (!window.screen || screen.logicalXDPI == null || 2578 screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) 2579 { return rect } 2580 var scaleX = screen.logicalXDPI / screen.deviceXDPI 2581 var scaleY = screen.logicalYDPI / screen.deviceYDPI 2582 return {left: rect.left * scaleX, right: rect.right * scaleX, 2583 top: rect.top * scaleY, bottom: rect.bottom * scaleY} 2584 } 2585 2586 function clearLineMeasurementCacheFor(lineView) { 2587 if (lineView.measure) { 2588 lineView.measure.cache = {} 2589 lineView.measure.heights = null 2590 if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) 2591 { lineView.measure.caches[i] = {} } } 2592 } 2593 } 2594 2595 function clearLineMeasurementCache(cm) { 2596 cm.display.externalMeasure = null 2597 removeChildren(cm.display.lineMeasure) 2598 for (var i = 0; i < cm.display.view.length; i++) 2599 { clearLineMeasurementCacheFor(cm.display.view[i]) } 2600 } 2601 2602 function clearCaches(cm) { 2603 clearLineMeasurementCache(cm) 2604 cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null 2605 if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true } 2606 cm.display.lineNumChars = null 2607 } 2608 2609 function pageScrollX() { 2610 // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206 2611 // which causes page_Offset and bounding client rects to use 2612 // different reference viewports and invalidate our calculations. 2613 if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) } 2614 return window.pageXOffset || (document.documentElement || document.body).scrollLeft 2615 } 2616 function pageScrollY() { 2617 if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) } 2618 return window.pageYOffset || (document.documentElement || document.body).scrollTop 2619 } 2620 2621 function widgetTopHeight(lineObj) { 2622 var height = 0 2623 if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) 2624 { height += widgetHeight(lineObj.widgets[i]) } } } 2625 return height 2626 } 2627 2628 // Converts a {top, bottom, left, right} box from line-local 2629 // coordinates into another coordinate system. Context may be one of 2630 // "line", "div" (display.lineDiv), "local"./null (editor), "window", 2631 // or "page". 2632 function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) { 2633 if (!includeWidgets) { 2634 var height = widgetTopHeight(lineObj) 2635 rect.top += height; rect.bottom += height 2636 } 2637 if (context == "line") { return rect } 2638 if (!context) { context = "local" } 2639 var yOff = heightAtLine(lineObj) 2640 if (context == "local") { yOff += paddingTop(cm.display) } 2641 else { yOff -= cm.display.viewOffset } 2642 if (context == "page" || context == "window") { 2643 var lOff = cm.display.lineSpace.getBoundingClientRect() 2644 yOff += lOff.top + (context == "window" ? 0 : pageScrollY()) 2645 var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()) 2646 rect.left += xOff; rect.right += xOff 2647 } 2648 rect.top += yOff; rect.bottom += yOff 2649 return rect 2650 } 2651 2652 // Coverts a box from "div" coords to another coordinate system. 2653 // Context may be "window", "page", "div", or "local"./null. 2654 function fromCoordSystem(cm, coords, context) { 2655 if (context == "div") { return coords } 2656 var left = coords.left, top = coords.top 2657 // First move into "page" coordinate system 2658 if (context == "page") { 2659 left -= pageScrollX() 2660 top -= pageScrollY() 2661 } else if (context == "local" || !context) { 2662 var localBox = cm.display.sizer.getBoundingClientRect() 2663 left += localBox.left 2664 top += localBox.top 2665 } 2666 2667 var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect() 2668 return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top} 2669 } 2670 2671 function charCoords(cm, pos, context, lineObj, bias) { 2672 if (!lineObj) { lineObj = getLine(cm.doc, pos.line) } 2673 return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context) 2674 } 2675 2676 // Returns a box for a given cursor position, which may have an 2677 // 'other' property containing the position of the secondary cursor 2678 // on a bidi boundary. 2679 // A cursor Pos(line, char, "before") is on the same visual line as `char - 1` 2680 // and after `char - 1` in writing order of `char - 1` 2681 // A cursor Pos(line, char, "after") is on the same visual line as `char` 2682 // and before `char` in writing order of `char` 2683 // Examples (upper-case letters are RTL, lower-case are LTR): 2684 // Pos(0, 1, ...) 2685 // before after 2686 // ab a|b a|b 2687 // aB a|B aB| 2688 // Ab |Ab A|b 2689 // AB B|A B|A 2690 // Every position after the last character on a line is considered to stick 2691 // to the last character on the line. 2692 function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { 2693 lineObj = lineObj || getLine(cm.doc, pos.line) 2694 if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) } 2695 function get(ch, right) { 2696 var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight) 2697 if (right) { m.left = m.right; } else { m.right = m.left } 2698 return intoCoordSystem(cm, lineObj, m, context) 2699 } 2700 var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky 2701 if (ch >= lineObj.text.length) { 2702 ch = lineObj.text.length 2703 sticky = "before" 2704 } else if (ch <= 0) { 2705 ch = 0 2706 sticky = "after" 2707 } 2708 if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") } 2709 2710 function getBidi(ch, partPos, invert) { 2711 var part = order[partPos], right = part.level == 1 2712 return get(invert ? ch - 1 : ch, right != invert) 2713 } 2714 var partPos = getBidiPartAt(order, ch, sticky) 2715 var other = bidiOther 2716 var val = getBidi(ch, partPos, sticky == "before") 2717 if (other != null) { val.other = getBidi(ch, other, sticky != "before") } 2718 return val 2719 } 2720 2721 // Used to cheaply estimate the coordinates for a position. Used for 2722 // intermediate scroll updates. 2723 function estimateCoords(cm, pos) { 2724 var left = 0 2725 pos = clipPos(cm.doc, pos) 2726 if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch } 2727 var lineObj = getLine(cm.doc, pos.line) 2728 var top = heightAtLine(lineObj) + paddingTop(cm.display) 2729 return {left: left, right: left, top: top, bottom: top + lineObj.height} 2730 } 2731 2732 // Positions returned by coordsChar contain some extra information. 2733 // xRel is the relative x position of the input coordinates compared 2734 // to the found position (so xRel > 0 means the coordinates are to 2735 // the right of the character position, for example). When outside 2736 // is true, that means the coordinates lie outside the line's 2737 // vertical range. 2738 function PosWithInfo(line, ch, sticky, outside, xRel) { 2739 var pos = Pos(line, ch, sticky) 2740 pos.xRel = xRel 2741 if (outside) { pos.outside = true } 2742 return pos 2743 } 2744 2745 // Compute the character position closest to the given coordinates. 2746 // Input must be lineSpace-local ("div" coordinate system). 2747 function coordsChar(cm, x, y) { 2748 var doc = cm.doc 2749 y += cm.display.viewOffset 2750 if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) } 2751 var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1 2752 if (lineN > last) 2753 { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) } 2754 if (x < 0) { x = 0 } 2755 2756 var lineObj = getLine(doc, lineN) 2757 for (;;) { 2758 var found = coordsCharInner(cm, lineObj, lineN, x, y) 2759 var merged = collapsedSpanAtEnd(lineObj) 2760 var mergedPos = merged && merged.find(0, true) 2761 if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) 2762 { lineN = lineNo(lineObj = mergedPos.to.line) } 2763 else 2764 { return found } 2765 } 2766 } 2767 2768 function wrappedLineExtent(cm, lineObj, preparedMeasure, y) { 2769 y -= widgetTopHeight(lineObj) 2770 var end = lineObj.text.length 2771 var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0) 2772 end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end) 2773 return {begin: begin, end: end} 2774 } 2775 2776 function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) { 2777 if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) } 2778 var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top 2779 return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop) 2780 } 2781 2782 // Returns true if the given side of a box is after the given 2783 // coordinates, in top-to-bottom, left-to-right order. 2784 function boxIsAfter(box, x, y, left) { 2785 return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x 2786 } 2787 2788 function coordsCharInner(cm, lineObj, lineNo, x, y) { 2789 // Move y into line-local coordinate space 2790 y -= heightAtLine(lineObj) 2791 var preparedMeasure = prepareMeasureForLine(cm, lineObj) 2792 // When directly calling `measureCharPrepared`, we have to adjust 2793 // for the widgets at this line. 2794 var widgetHeight = widgetTopHeight(lineObj) 2795 var begin = 0, end = lineObj.text.length, ltr = true 2796 2797 var order = getOrder(lineObj, cm.doc.direction) 2798 // If the line isn't plain left-to-right text, first figure out 2799 // which bidi section the coordinates fall into. 2800 if (order) { 2801 var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart) 2802 (cm, lineObj, lineNo, preparedMeasure, order, x, y) 2803 ltr = part.level != 1 2804 // The awkward -1 offsets are needed because findFirst (called 2805 // on these below) will treat its first bound as inclusive, 2806 // second as exclusive, but we want to actually address the 2807 // characters in the part's range 2808 begin = ltr ? part.from : part.to - 1 2809 end = ltr ? part.to : part.from - 1 2810 } 2811 2812 // A binary search to find the first character whose bounding box 2813 // starts after the coordinates. If we run across any whose box wrap 2814 // the coordinates, store that. 2815 var chAround = null, boxAround = null 2816 var ch = findFirst(function (ch) { 2817 var box = measureCharPrepared(cm, preparedMeasure, ch) 2818 box.top += widgetHeight; box.bottom += widgetHeight 2819 if (!boxIsAfter(box, x, y, false)) { return false } 2820 if (box.top <= y && box.left <= x) { 2821 chAround = ch 2822 boxAround = box 2823 } 2824 return true 2825 }, begin, end) 2826 2827 var baseX, sticky, outside = false 2828 // If a box around the coordinates was found, use that 2829 if (boxAround) { 2830 // Distinguish coordinates nearer to the left or right side of the box 2831 var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr 2832 ch = chAround + (atStart ? 0 : 1) 2833 sticky = atStart ? "after" : "before" 2834 baseX = atLeft ? boxAround.left : boxAround.right 2835 } else { 2836 // (Adjust for extended bound, if necessary.) 2837 if (!ltr && (ch == end || ch == begin)) { ch++ } 2838 // To determine which side to associate with, get the box to the 2839 // left of the character and compare it's vertical position to the 2840 // coordinates 2841 sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" : 2842 (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ? 2843 "after" : "before" 2844 // Now get accurate coordinates for this place, in order to get a 2845 // base X position 2846 var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure) 2847 baseX = coords.left 2848 outside = y < coords.top || y >= coords.bottom 2849 } 2850 2851 ch = skipExtendingChars(lineObj.text, ch, 1) 2852 return PosWithInfo(lineNo, ch, sticky, outside, x - baseX) 2853 } 2854 2855 function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) { 2856 // Bidi parts are sorted left-to-right, and in a non-line-wrapping 2857 // situation, we can take this ordering to correspond to the visual 2858 // ordering. This finds the first part whose end is after the given 2859 // coordinates. 2860 var index = findFirst(function (i) { 2861 var part = order[i], ltr = part.level != 1 2862 return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"), 2863 "line", lineObj, preparedMeasure), x, y, true) 2864 }, 0, order.length - 1) 2865 var part = order[index] 2866 // If this isn't the first part, the part's start is also after 2867 // the coordinates, and the coordinates aren't on the same line as 2868 // that start, move one part back. 2869 if (index > 0) { 2870 var ltr = part.level != 1 2871 var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"), 2872 "line", lineObj, preparedMeasure) 2873 if (boxIsAfter(start, x, y, true) && start.top > y) 2874 { part = order[index - 1] } 2875 } 2876 return part 2877 } 2878 2879 function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) { 2880 // In a wrapped line, rtl text on wrapping boundaries can do things 2881 // that don't correspond to the ordering in our `order` array at 2882 // all, so a binary search doesn't work, and we want to return a 2883 // part that only spans one line so that the binary search in 2884 // coordsCharInner is safe. As such, we first find the extent of the 2885 // wrapped line, and then do a flat search in which we discard any 2886 // spans that aren't on the line. 2887 var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y); 2888 var begin = ref.begin; 2889 var end = ref.end; 2890 var part = null, closestDist = null 2891 for (var i = 0; i < order.length; i++) { 2892 var p = order[i] 2893 if (p.from >= end || p.to <= begin) { continue } 2894 var ltr = p.level != 1 2895 var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right 2896 // Weigh against spans ending before this, so that they are only 2897 // picked if nothing ends after 2898 var dist = endX < x ? x - endX + 1e9 : endX - x 2899 if (!part || closestDist > dist) { 2900 part = p 2901 closestDist = dist 2902 } 2903 } 2904 if (!part) { part = order[order.length - 1] } 2905 // Clip the part to the wrapped line. 2906 if (part.from < begin) { part = {from: begin, to: part.to, level: part.level} } 2907 if (part.to > end) { part = {from: part.from, to: end, level: part.level} } 2908 return part 2909 } 2910 2911 var measureText 2912 // Compute the default text height. 2913 function textHeight(display) { 2914 if (display.cachedTextHeight != null) { return display.cachedTextHeight } 2915 if (measureText == null) { 2916 measureText = elt("pre") 2917 // Measure a bunch of lines, for browsers that compute 2918 // fractional heights. 2919 for (var i = 0; i < 49; ++i) { 2920 measureText.appendChild(document.createTextNode("x")) 2921 measureText.appendChild(elt("br")) 2922 } 2923 measureText.appendChild(document.createTextNode("x")) 2924 } 2925 removeChildrenAndAdd(display.measure, measureText) 2926 var height = measureText.offsetHeight / 50 2927 if (height > 3) { display.cachedTextHeight = height } 2928 removeChildren(display.measure) 2929 return height || 1 2930 } 2931 2932 // Compute the default character width. 2933 function charWidth(display) { 2934 if (display.cachedCharWidth != null) { return display.cachedCharWidth } 2935 var anchor = elt("span", "xxxxxxxxxx") 2936 var pre = elt("pre", [anchor]) 2937 removeChildrenAndAdd(display.measure, pre) 2938 var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10 2939 if (width > 2) { display.cachedCharWidth = width } 2940 return width || 10 2941 } 2942 2943 // Do a bulk-read of the DOM positions and sizes needed to draw the 2944 // view, so that we don't interleave reading and writing to the DOM. 2945 function getDimensions(cm) { 2946 var d = cm.display, left = {}, width = {} 2947 var gutterLeft = d.gutters.clientLeft 2948 for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { 2949 left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft 2950 width[cm.options.gutters[i]] = n.clientWidth 2951 } 2952 return {fixedPos: compensateForHScroll(d), 2953 gutterTotalWidth: d.gutters.offsetWidth, 2954 gutterLeft: left, 2955 gutterWidth: width, 2956 wrapperWidth: d.wrapper.clientWidth} 2957 } 2958 2959 // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, 2960 // but using getBoundingClientRect to get a sub-pixel-accurate 2961 // result. 2962 function compensateForHScroll(display) { 2963 return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left 2964 } 2965 2966 // Returns a function that estimates the height of a line, to use as 2967 // first approximation until the line becomes visible (and is thus 2968 // properly measurable). 2969 function estimateHeight(cm) { 2970 var th = textHeight(cm.display), wrapping = cm.options.lineWrapping 2971 var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3) 2972 return function (line) { 2973 if (lineIsHidden(cm.doc, line)) { return 0 } 2974 2975 var widgetsHeight = 0 2976 if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { 2977 if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height } 2978 } } 2979 2980 if (wrapping) 2981 { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th } 2982 else 2983 { return widgetsHeight + th } 2984 } 2985 } 2986 2987 function estimateLineHeights(cm) { 2988 var doc = cm.doc, est = estimateHeight(cm) 2989 doc.iter(function (line) { 2990 var estHeight = est(line) 2991 if (estHeight != line.height) { updateLineHeight(line, estHeight) } 2992 }) 2993 } 2994 2995 // Given a mouse event, find the corresponding position. If liberal 2996 // is false, it checks whether a gutter or scrollbar was clicked, 2997 // and returns null if it was. forRect is used by rectangular 2998 // selections, and tries to estimate a character position even for 2999 // coordinates beyond the right of the text. 3000 function posFromMouse(cm, e, liberal, forRect) { 3001 var display = cm.display 3002 if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null } 3003 3004 var x, y, space = display.lineSpace.getBoundingClientRect() 3005 // Fails unpredictably on IE[67] when mouse is dragged around quickly. 3006 try { x = e.clientX - space.left; y = e.clientY - space.top } 3007 catch (e) { return null } 3008 var coords = coordsChar(cm, x, y), line 3009 if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { 3010 var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length 3011 coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)) 3012 } 3013 return coords 3014 } 3015 3016 // Find the view element corresponding to a given line. Return null 3017 // when the line isn't visible. 3018 function findViewIndex(cm, n) { 3019 if (n >= cm.display.viewTo) { return null } 3020 n -= cm.display.viewFrom 3021 if (n < 0) { return null } 3022 var view = cm.display.view 3023 for (var i = 0; i < view.length; i++) { 3024 n -= view[i].size 3025 if (n < 0) { return i } 3026 } 3027 } 3028 3029 function updateSelection(cm) { 3030 cm.display.input.showSelection(cm.display.input.prepareSelection()) 3031 } 3032 3033 function prepareSelection(cm, primary) { 3034 if ( primary === void 0 ) primary = true; 3035 3036 var doc = cm.doc, result = {} 3037 var curFragment = result.cursors = document.createDocumentFragment() 3038 var selFragment = result.selection = document.createDocumentFragment() 3039 3040 for (var i = 0; i < doc.sel.ranges.length; i++) { 3041 if (!primary && i == doc.sel.primIndex) { continue } 3042 var range = doc.sel.ranges[i] 3043 if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue } 3044 var collapsed = range.empty() 3045 if (collapsed || cm.options.showCursorWhenSelecting) 3046 { drawSelectionCursor(cm, range.head, curFragment) } 3047 if (!collapsed) 3048 { drawSelectionRange(cm, range, selFragment) } 3049 } 3050 return result 3051 } 3052 3053 // Draws a cursor for the given range 3054 function drawSelectionCursor(cm, head, output) { 3055 var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine) 3056 3057 var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")) 3058 cursor.style.left = pos.left + "px" 3059 cursor.style.top = pos.top + "px" 3060 cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px" 3061 3062 if (pos.other) { 3063 // Secondary cursor, shown when on a 'jump' in bi-directional text 3064 var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")) 3065 otherCursor.style.display = "" 3066 otherCursor.style.left = pos.other.left + "px" 3067 otherCursor.style.top = pos.other.top + "px" 3068 otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px" 3069 } 3070 } 3071 3072 function cmpCoords(a, b) { return a.top - b.top || a.left - b.left } 3073 3074 // Draws the given range as a highlighted selection 3075 function drawSelectionRange(cm, range, output) { 3076 var display = cm.display, doc = cm.doc 3077 var fragment = document.createDocumentFragment() 3078 var padding = paddingH(cm.display), leftSide = padding.left 3079 var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right 3080 3081 function add(left, top, width, bottom) { 3082 if (top < 0) { top = 0 } 3083 top = Math.round(top) 3084 bottom = Math.round(bottom) 3085 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"))) 3086 } 3087 3088 function drawForLine(line, fromArg, toArg) { 3089 var lineObj = getLine(doc, line) 3090 var lineLen = lineObj.text.length 3091 var start, end 3092 function coords(ch, bias) { 3093 return charCoords(cm, Pos(line, ch), "div", lineObj, bias) 3094 } 3095 3096 var order = getOrder(lineObj, doc.direction) 3097 iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) { 3098 var fromPos = coords(from, dir == "ltr" ? "left" : "right") 3099 var toPos = coords(to - 1, dir == "ltr" ? "right" : "left") 3100 if (dir == "ltr") { 3101 var fromLeft = fromArg == null && from == 0 ? leftSide : fromPos.left 3102 var toRight = toArg == null && to == lineLen ? rightSide : toPos.right 3103 if (toPos.top - fromPos.top <= 3) { // Single line 3104 add(fromLeft, toPos.top, toRight - fromLeft, toPos.bottom) 3105 } else { // Multiple lines 3106 add(fromLeft, fromPos.top, null, fromPos.bottom) 3107 if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top) } 3108 add(leftSide, toPos.top, toPos.right, toPos.bottom) 3109 } 3110 } else if (from < to) { // RTL 3111 var fromRight = fromArg == null && from == 0 ? rightSide : fromPos.right 3112 var toLeft = toArg == null && to == lineLen ? leftSide : toPos.left 3113 if (toPos.top - fromPos.top <= 3) { // Single line 3114 add(toLeft, toPos.top, fromRight - toLeft, toPos.bottom) 3115 } else { // Multiple lines 3116 var topLeft = leftSide 3117 if (i) { 3118 var topEnd = wrappedLineExtentChar(cm, lineObj, null, from).end 3119 // The coordinates returned for an RTL wrapped space tend to 3120 // be complete bogus, so try to skip that here. 3121 topLeft = coords(topEnd - (/\s/.test(lineObj.text.charAt(topEnd - 1)) ? 2 : 1), "left").left 3122 } 3123 add(topLeft, fromPos.top, fromRight - topLeft, fromPos.bottom) 3124 if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top) } 3125 var botWidth = null 3126 if (i < order.length - 1 || true) { 3127 var botStart = wrappedLineExtentChar(cm, lineObj, null, to).begin 3128 botWidth = coords(botStart, "right").right - toLeft 3129 } 3130 add(toLeft, toPos.top, botWidth, toPos.bottom) 3131 } 3132 } 3133 3134 if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos } 3135 if (cmpCoords(toPos, start) < 0) { start = toPos } 3136 if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos } 3137 if (cmpCoords(toPos, end) < 0) { end = toPos } 3138 }) 3139 return {start: start, end: end} 3140 } 3141 3142 var sFrom = range.from(), sTo = range.to() 3143 if (sFrom.line == sTo.line) { 3144 drawForLine(sFrom.line, sFrom.ch, sTo.ch) 3145 } else { 3146 var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line) 3147 var singleVLine = visualLine(fromLine) == visualLine(toLine) 3148 var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end 3149 var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start 3150 if (singleVLine) { 3151 if (leftEnd.top < rightStart.top - 2) { 3152 add(leftEnd.right, leftEnd.top, null, leftEnd.bottom) 3153 add(leftSide, rightStart.top, rightStart.left, rightStart.bottom) 3154 } else { 3155 add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom) 3156 } 3157 } 3158 if (leftEnd.bottom < rightStart.top) 3159 { add(leftSide, leftEnd.bottom, null, rightStart.top) } 3160 } 3161 3162 output.appendChild(fragment) 3163 } 3164 3165 // Cursor-blinking 3166 function restartBlink(cm) { 3167 if (!cm.state.focused) { return } 3168 var display = cm.display 3169 clearInterval(display.blinker) 3170 var on = true 3171 display.cursorDiv.style.visibility = "" 3172 if (cm.options.cursorBlinkRate > 0) 3173 { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; }, 3174 cm.options.cursorBlinkRate) } 3175 else if (cm.options.cursorBlinkRate < 0) 3176 { display.cursorDiv.style.visibility = "hidden" } 3177 } 3178 3179 function ensureFocus(cm) { 3180 if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) } 3181 } 3182 3183 function delayBlurEvent(cm) { 3184 cm.state.delayingBlurEvent = true 3185 setTimeout(function () { if (cm.state.delayingBlurEvent) { 3186 cm.state.delayingBlurEvent = false 3187 onBlur(cm) 3188 } }, 100) 3189 } 3190 3191 function onFocus(cm, e) { 3192 if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false } 3193 3194 if (cm.options.readOnly == "nocursor") { return } 3195 if (!cm.state.focused) { 3196 signal(cm, "focus", cm, e) 3197 cm.state.focused = true 3198 addClass(cm.display.wrapper, "CodeMirror-focused") 3199 // This test prevents this from firing when a context 3200 // menu is closed (since the input reset would kill the 3201 // select-all detection hack) 3202 if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { 3203 cm.display.input.reset() 3204 if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730 3205 } 3206 cm.display.input.receivedFocus() 3207 } 3208 restartBlink(cm) 3209 } 3210 function onBlur(cm, e) { 3211 if (cm.state.delayingBlurEvent) { return } 3212 3213 if (cm.state.focused) { 3214 signal(cm, "blur", cm, e) 3215 cm.state.focused = false 3216 rmClass(cm.display.wrapper, "CodeMirror-focused") 3217 } 3218 clearInterval(cm.display.blinker) 3219 setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150) 3220 } 3221 3222 // Read the actual heights of the rendered lines, and update their 3223 // stored heights to match. 3224 function updateHeightsInViewport(cm) { 3225 var display = cm.display 3226 var prevBottom = display.lineDiv.offsetTop 3227 for (var i = 0; i < display.view.length; i++) { 3228 var cur = display.view[i], height = (void 0) 3229 if (cur.hidden) { continue } 3230 if (ie && ie_version < 8) { 3231 var bot = cur.node.offsetTop + cur.node.offsetHeight 3232 height = bot - prevBottom 3233 prevBottom = bot 3234 } else { 3235 var box = cur.node.getBoundingClientRect() 3236 height = box.bottom - box.top 3237 } 3238 var diff = cur.line.height - height 3239 if (height < 2) { height = textHeight(display) } 3240 if (diff > .005 || diff < -.005) { 3241 updateLineHeight(cur.line, height) 3242 updateWidgetHeight(cur.line) 3243 if (cur.rest) { for (var j = 0; j < cur.rest.length; j++) 3244 { updateWidgetHeight(cur.rest[j]) } } 3245 } 3246 } 3247 } 3248 3249 // Read and store the height of line widgets associated with the 3250 // given line. 3251 function updateWidgetHeight(line) { 3252 if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) 3253 { line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight } } 3254 } 3255 3256 // Compute the lines that are visible in a given viewport (defaults 3257 // the the current scroll position). viewport may contain top, 3258 // height, and ensure (see op.scrollToPos) properties. 3259 function visibleLines(display, doc, viewport) { 3260 var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop 3261 top = Math.floor(top - paddingTop(display)) 3262 var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight 3263 3264 var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom) 3265 // Ensure is a {from: {line, ch}, to: {line, ch}} object, and 3266 // forces those lines into the viewport (if possible). 3267 if (viewport && viewport.ensure) { 3268 var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line 3269 if (ensureFrom < from) { 3270 from = ensureFrom 3271 to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight) 3272 } else if (Math.min(ensureTo, doc.lastLine()) >= to) { 3273 from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight) 3274 to = ensureTo 3275 } 3276 } 3277 return {from: from, to: Math.max(to, from + 1)} 3278 } 3279 3280 // Re-align line numbers and gutter marks to compensate for 3281 // horizontal scrolling. 3282 function alignHorizontally(cm) { 3283 var display = cm.display, view = display.view 3284 if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return } 3285 var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft 3286 var gutterW = display.gutters.offsetWidth, left = comp + "px" 3287 for (var i = 0; i < view.length; i++) { if (!view[i].hidden) { 3288 if (cm.options.fixedGutter) { 3289 if (view[i].gutter) 3290 { view[i].gutter.style.left = left } 3291 if (view[i].gutterBackground) 3292 { view[i].gutterBackground.style.left = left } 3293 } 3294 var align = view[i].alignable 3295 if (align) { for (var j = 0; j < align.length; j++) 3296 { align[j].style.left = left } } 3297 } } 3298 if (cm.options.fixedGutter) 3299 { display.gutters.style.left = (comp + gutterW) + "px" } 3300 } 3301 3302 // Used to ensure that the line number gutter is still the right 3303 // size for the current document size. Returns true when an update 3304 // is needed. 3305 function maybeUpdateLineNumberWidth(cm) { 3306 if (!cm.options.lineNumbers) { return false } 3307 var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display 3308 if (last.length != display.lineNumChars) { 3309 var test = display.measure.appendChild(elt("div", [elt("div", last)], 3310 "CodeMirror-linenumber CodeMirror-gutter-elt")) 3311 var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW 3312 display.lineGutter.style.width = "" 3313 display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1 3314 display.lineNumWidth = display.lineNumInnerWidth + padding 3315 display.lineNumChars = display.lineNumInnerWidth ? last.length : -1 3316 display.lineGutter.style.width = display.lineNumWidth + "px" 3317 updateGutterSpace(cm) 3318 return true 3319 } 3320 return false 3321 } 3322 3323 // SCROLLING THINGS INTO VIEW 3324 3325 // If an editor sits on the top or bottom of the window, partially 3326 // scrolled out of view, this ensures that the cursor is visible. 3327 function maybeScrollWindow(cm, rect) { 3328 if (signalDOMEvent(cm, "scrollCursorIntoView")) { return } 3329 3330 var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null 3331 if (rect.top + box.top < 0) { doScroll = true } 3332 else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false } 3333 if (doScroll != null && !phantom) { 3334 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;")) 3335 cm.display.lineSpace.appendChild(scrollNode) 3336 scrollNode.scrollIntoView(doScroll) 3337 cm.display.lineSpace.removeChild(scrollNode) 3338 } 3339 } 3340 3341 // Scroll a given position into view (immediately), verifying that 3342 // it actually became visible (as line heights are accurately 3343 // measured, the position of something may 'drift' during drawing). 3344 function scrollPosIntoView(cm, pos, end, margin) { 3345 if (margin == null) { margin = 0 } 3346 var rect 3347 if (!cm.options.lineWrapping && pos == end) { 3348 // Set pos and end to the cursor positions around the character pos sticks to 3349 // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch 3350 // If pos == Pos(_, 0, "before"), pos and end are unchanged 3351 pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos 3352 end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos 3353 } 3354 for (var limit = 0; limit < 5; limit++) { 3355 var changed = false 3356 var coords = cursorCoords(cm, pos) 3357 var endCoords = !end || end == pos ? coords : cursorCoords(cm, end) 3358 rect = {left: Math.min(coords.left, endCoords.left), 3359 top: Math.min(coords.top, endCoords.top) - margin, 3360 right: Math.max(coords.left, endCoords.left), 3361 bottom: Math.max(coords.bottom, endCoords.bottom) + margin} 3362 var scrollPos = calculateScrollPos(cm, rect) 3363 var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft 3364 if (scrollPos.scrollTop != null) { 3365 updateScrollTop(cm, scrollPos.scrollTop) 3366 if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true } 3367 } 3368 if (scrollPos.scrollLeft != null) { 3369 setScrollLeft(cm, scrollPos.scrollLeft) 3370 if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true } 3371 } 3372 if (!changed) { break } 3373 } 3374 return rect 3375 } 3376 3377 // Scroll a given set of coordinates into view (immediately). 3378 function scrollIntoView(cm, rect) { 3379 var scrollPos = calculateScrollPos(cm, rect) 3380 if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop) } 3381 if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) } 3382 } 3383 3384 // Calculate a new scroll position needed to scroll the given 3385 // rectangle into view. Returns an object with scrollTop and 3386 // scrollLeft properties. When these are undefined, the 3387 // vertical/horizontal position does not need to be adjusted. 3388 function calculateScrollPos(cm, rect) { 3389 var display = cm.display, snapMargin = textHeight(cm.display) 3390 if (rect.top < 0) { rect.top = 0 } 3391 var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop 3392 var screen = displayHeight(cm), result = {} 3393 if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen } 3394 var docBottom = cm.doc.height + paddingVert(display) 3395 var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin 3396 if (rect.top < screentop) { 3397 result.scrollTop = atTop ? 0 : rect.top 3398 } else if (rect.bottom > screentop + screen) { 3399 var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen) 3400 if (newTop != screentop) { result.scrollTop = newTop } 3401 } 3402 3403 var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft 3404 var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0) 3405 var tooWide = rect.right - rect.left > screenw 3406 if (tooWide) { rect.right = rect.left + screenw } 3407 if (rect.left < 10) 3408 { result.scrollLeft = 0 } 3409 else if (rect.left < screenleft) 3410 { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)) } 3411 else if (rect.right > screenw + screenleft - 3) 3412 { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw } 3413 return result 3414 } 3415 3416 // Store a relative adjustment to the scroll position in the current 3417 // operation (to be applied when the operation finishes). 3418 function addToScrollTop(cm, top) { 3419 if (top == null) { return } 3420 resolveScrollToPos(cm) 3421 cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top 3422 } 3423 3424 // Make sure that at the end of the operation the current cursor is 3425 // shown. 3426 function ensureCursorVisible(cm) { 3427 resolveScrollToPos(cm) 3428 var cur = cm.getCursor() 3429 cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin} 3430 } 3431 3432 function scrollToCoords(cm, x, y) { 3433 if (x != null || y != null) { resolveScrollToPos(cm) } 3434 if (x != null) { cm.curOp.scrollLeft = x } 3435 if (y != null) { cm.curOp.scrollTop = y } 3436 } 3437 3438 function scrollToRange(cm, range) { 3439 resolveScrollToPos(cm) 3440 cm.curOp.scrollToPos = range 3441 } 3442 3443 // When an operation has its scrollToPos property set, and another 3444 // scroll action is applied before the end of the operation, this 3445 // 'simulates' scrolling that position into view in a cheap way, so 3446 // that the effect of intermediate scroll commands is not ignored. 3447 function resolveScrollToPos(cm) { 3448 var range = cm.curOp.scrollToPos 3449 if (range) { 3450 cm.curOp.scrollToPos = null 3451 var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to) 3452 scrollToCoordsRange(cm, from, to, range.margin) 3453 } 3454 } 3455 3456 function scrollToCoordsRange(cm, from, to, margin) { 3457 var sPos = calculateScrollPos(cm, { 3458 left: Math.min(from.left, to.left), 3459 top: Math.min(from.top, to.top) - margin, 3460 right: Math.max(from.right, to.right), 3461 bottom: Math.max(from.bottom, to.bottom) + margin 3462 }) 3463 scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop) 3464 } 3465 3466 // Sync the scrollable area and scrollbars, ensure the viewport 3467 // covers the visible area. 3468 function updateScrollTop(cm, val) { 3469 if (Math.abs(cm.doc.scrollTop - val) < 2) { return } 3470 if (!gecko) { updateDisplaySimple(cm, {top: val}) } 3471 setScrollTop(cm, val, true) 3472 if (gecko) { updateDisplaySimple(cm) } 3473 startWorker(cm, 100) 3474 } 3475 3476 function setScrollTop(cm, val, forceScroll) { 3477 val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val) 3478 if (cm.display.scroller.scrollTop == val && !forceScroll) { return } 3479 cm.doc.scrollTop = val 3480 cm.display.scrollbars.setScrollTop(val) 3481 if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val } 3482 } 3483 3484 // Sync scroller and scrollbar, ensure the gutter elements are 3485 // aligned. 3486 function setScrollLeft(cm, val, isScroller, forceScroll) { 3487 val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth) 3488 if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return } 3489 cm.doc.scrollLeft = val 3490 alignHorizontally(cm) 3491 if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val } 3492 cm.display.scrollbars.setScrollLeft(val) 3493 } 3494 3495 // SCROLLBARS 3496 3497 // Prepare DOM reads needed to update the scrollbars. Done in one 3498 // shot to minimize update/measure roundtrips. 3499 function measureForScrollbars(cm) { 3500 var d = cm.display, gutterW = d.gutters.offsetWidth 3501 var docH = Math.round(cm.doc.height + paddingVert(cm.display)) 3502 return { 3503 clientHeight: d.scroller.clientHeight, 3504 viewHeight: d.wrapper.clientHeight, 3505 scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, 3506 viewWidth: d.wrapper.clientWidth, 3507 barLeft: cm.options.fixedGutter ? gutterW : 0, 3508 docHeight: docH, 3509 scrollHeight: docH + scrollGap(cm) + d.barHeight, 3510 nativeBarWidth: d.nativeBarWidth, 3511 gutterWidth: gutterW 3512 } 3513 } 3514 3515 var NativeScrollbars = function(place, scroll, cm) { 3516 this.cm = cm 3517 var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar") 3518 var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar") 3519 place(vert); place(horiz) 3520 3521 on(vert, "scroll", function () { 3522 if (vert.clientHeight) { scroll(vert.scrollTop, "vertical") } 3523 }) 3524 on(horiz, "scroll", function () { 3525 if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal") } 3526 }) 3527 3528 this.checkedZeroWidth = false 3529 // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). 3530 if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px" } 3531 }; 3532 3533 NativeScrollbars.prototype.update = function (measure) { 3534 var needsH = measure.scrollWidth > measure.clientWidth + 1 3535 var needsV = measure.scrollHeight > measure.clientHeight + 1 3536 var sWidth = measure.nativeBarWidth 3537 3538 if (needsV) { 3539 this.vert.style.display = "block" 3540 this.vert.style.bottom = needsH ? sWidth + "px" : "0" 3541 var totalHeight = measure.viewHeight - (needsH ? sWidth : 0) 3542 // A bug in IE8 can cause this value to be negative, so guard it. 3543 this.vert.firstChild.style.height = 3544 Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px" 3545 } else { 3546 this.vert.style.display = "" 3547 this.vert.firstChild.style.height = "0" 3548 } 3549 3550 if (needsH) { 3551 this.horiz.style.display = "block" 3552 this.horiz.style.right = needsV ? sWidth + "px" : "0" 3553 this.horiz.style.left = measure.barLeft + "px" 3554 var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0) 3555 this.horiz.firstChild.style.width = 3556 Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px" 3557 } else { 3558 this.horiz.style.display = "" 3559 this.horiz.firstChild.style.width = "0" 3560 } 3561 3562 if (!this.checkedZeroWidth && measure.clientHeight > 0) { 3563 if (sWidth == 0) { this.zeroWidthHack() } 3564 this.checkedZeroWidth = true 3565 } 3566 3567 return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0} 3568 }; 3569 3570 NativeScrollbars.prototype.setScrollLeft = function (pos) { 3571 if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos } 3572 if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz") } 3573 }; 3574 3575 NativeScrollbars.prototype.setScrollTop = function (pos) { 3576 if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos } 3577 if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert") } 3578 }; 3579 3580 NativeScrollbars.prototype.zeroWidthHack = function () { 3581 var w = mac && !mac_geMountainLion ? "12px" : "18px" 3582 this.horiz.style.height = this.vert.style.width = w 3583 this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none" 3584 this.disableHoriz = new Delayed 3585 this.disableVert = new Delayed 3586 }; 3587 3588 NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) { 3589 bar.style.pointerEvents = "auto" 3590 function maybeDisable() { 3591 // To find out whether the scrollbar is still visible, we 3592 // check whether the element under the pixel in the bottom 3593 // right corner of the scrollbar box is the scrollbar box 3594 // itself (when the bar is still visible) or its filler child 3595 // (when the bar is hidden). If it is still visible, we keep 3596 // it enabled, if it's hidden, we disable pointer events. 3597 var box = bar.getBoundingClientRect() 3598 var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2) 3599 : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1) 3600 if (elt != bar) { bar.style.pointerEvents = "none" } 3601 else { delay.set(1000, maybeDisable) } 3602 } 3603 delay.set(1000, maybeDisable) 3604 }; 3605 3606 NativeScrollbars.prototype.clear = function () { 3607 var parent = this.horiz.parentNode 3608 parent.removeChild(this.horiz) 3609 parent.removeChild(this.vert) 3610 }; 3611 3612 var NullScrollbars = function () {}; 3613 3614 NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} }; 3615 NullScrollbars.prototype.setScrollLeft = function () {}; 3616 NullScrollbars.prototype.setScrollTop = function () {}; 3617 NullScrollbars.prototype.clear = function () {}; 3618 3619 function updateScrollbars(cm, measure) { 3620 if (!measure) { measure = measureForScrollbars(cm) } 3621 var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight 3622 updateScrollbarsInner(cm, measure) 3623 for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { 3624 if (startWidth != cm.display.barWidth && cm.options.lineWrapping) 3625 { updateHeightsInViewport(cm) } 3626 updateScrollbarsInner(cm, measureForScrollbars(cm)) 3627 startWidth = cm.display.barWidth; startHeight = cm.display.barHeight 3628 } 3629 } 3630 3631 // Re-synchronize the fake scrollbars with the actual size of the 3632 // content. 3633 function updateScrollbarsInner(cm, measure) { 3634 var d = cm.display 3635 var sizes = d.scrollbars.update(measure) 3636 3637 d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px" 3638 d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px" 3639 d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent" 3640 3641 if (sizes.right && sizes.bottom) { 3642 d.scrollbarFiller.style.display = "block" 3643 d.scrollbarFiller.style.height = sizes.bottom + "px" 3644 d.scrollbarFiller.style.width = sizes.right + "px" 3645 } else { d.scrollbarFiller.style.display = "" } 3646 if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { 3647 d.gutterFiller.style.display = "block" 3648 d.gutterFiller.style.height = sizes.bottom + "px" 3649 d.gutterFiller.style.width = measure.gutterWidth + "px" 3650 } else { d.gutterFiller.style.display = "" } 3651 } 3652 3653 var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars} 3654 3655 function initScrollbars(cm) { 3656 if (cm.display.scrollbars) { 3657 cm.display.scrollbars.clear() 3658 if (cm.display.scrollbars.addClass) 3659 { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) } 3660 } 3661 3662 cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) { 3663 cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller) 3664 // Prevent clicks in the scrollbars from killing focus 3665 on(node, "mousedown", function () { 3666 if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) } 3667 }) 3668 node.setAttribute("cm-not-content", "true") 3669 }, function (pos, axis) { 3670 if (axis == "horizontal") { setScrollLeft(cm, pos) } 3671 else { updateScrollTop(cm, pos) } 3672 }, cm) 3673 if (cm.display.scrollbars.addClass) 3674 { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) } 3675 } 3676 3677 // Operations are used to wrap a series of changes to the editor 3678 // state in such a way that each change won't have to update the 3679 // cursor and display (which would be awkward, slow, and 3680 // error-prone). Instead, display updates are batched and then all 3681 // combined and executed at once. 3682 3683 var nextOpId = 0 3684 // Start a new operation. 3685 function startOperation(cm) { 3686 cm.curOp = { 3687 cm: cm, 3688 viewChanged: false, // Flag that indicates that lines might need to be redrawn 3689 startHeight: cm.doc.height, // Used to detect need to update scrollbar 3690 forceUpdate: false, // Used to force a redraw 3691 updateInput: null, // Whether to reset the input textarea 3692 typing: false, // Whether this reset should be careful to leave existing text (for compositing) 3693 changeObjs: null, // Accumulated changes, for firing change events 3694 cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on 3695 cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already 3696 selectionChanged: false, // Whether the selection needs to be redrawn 3697 updateMaxLine: false, // Set when the widest line needs to be determined anew 3698 scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet 3699 scrollToPos: null, // Used to scroll to a specific position 3700 focus: false, 3701 id: ++nextOpId // Unique ID 3702 } 3703 pushOperation(cm.curOp) 3704 } 3705 3706 // Finish an operation, updating the display and signalling delayed events 3707 function endOperation(cm) { 3708 var op = cm.curOp 3709 finishOperation(op, function (group) { 3710 for (var i = 0; i < group.ops.length; i++) 3711 { group.ops[i].cm.curOp = null } 3712 endOperations(group) 3713 }) 3714 } 3715 3716 // The DOM updates done when an operation finishes are batched so 3717 // that the minimum number of relayouts are required. 3718 function endOperations(group) { 3719 var ops = group.ops 3720 for (var i = 0; i < ops.length; i++) // Read DOM 3721 { endOperation_R1(ops[i]) } 3722 for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe) 3723 { endOperation_W1(ops[i$1]) } 3724 for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM 3725 { endOperation_R2(ops[i$2]) } 3726 for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe) 3727 { endOperation_W2(ops[i$3]) } 3728 for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM 3729 { endOperation_finish(ops[i$4]) } 3730 } 3731 3732 function endOperation_R1(op) { 3733 var cm = op.cm, display = cm.display 3734 maybeClipScrollbars(cm) 3735 if (op.updateMaxLine) { findMaxLine(cm) } 3736 3737 op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || 3738 op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || 3739 op.scrollToPos.to.line >= display.viewTo) || 3740 display.maxLineChanged && cm.options.lineWrapping 3741 op.update = op.mustUpdate && 3742 new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate) 3743 } 3744 3745 function endOperation_W1(op) { 3746 op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update) 3747 } 3748 3749 function endOperation_R2(op) { 3750 var cm = op.cm, display = cm.display 3751 if (op.updatedDisplay) { updateHeightsInViewport(cm) } 3752 3753 op.barMeasure = measureForScrollbars(cm) 3754 3755 // If the max line changed since it was last measured, measure it, 3756 // and ensure the document's width matches it. 3757 // updateDisplay_W2 will use these properties to do the actual resizing 3758 if (display.maxLineChanged && !cm.options.lineWrapping) { 3759 op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3 3760 cm.display.sizerWidth = op.adjustWidthTo 3761 op.barMeasure.scrollWidth = 3762 Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth) 3763 op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)) 3764 } 3765 3766 if (op.updatedDisplay || op.selectionChanged) 3767 { op.preparedSelection = display.input.prepareSelection() } 3768 } 3769 3770 function endOperation_W2(op) { 3771 var cm = op.cm 3772 3773 if (op.adjustWidthTo != null) { 3774 cm.display.sizer.style.minWidth = op.adjustWidthTo + "px" 3775 if (op.maxScrollLeft < cm.doc.scrollLeft) 3776 { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) } 3777 cm.display.maxLineChanged = false 3778 } 3779 3780 var takeFocus = op.focus && op.focus == activeElt() 3781 if (op.preparedSelection) 3782 { cm.display.input.showSelection(op.preparedSelection, takeFocus) } 3783 if (op.updatedDisplay || op.startHeight != cm.doc.height) 3784 { updateScrollbars(cm, op.barMeasure) } 3785 if (op.updatedDisplay) 3786 { setDocumentHeight(cm, op.barMeasure) } 3787 3788 if (op.selectionChanged) { restartBlink(cm) } 3789 3790 if (cm.state.focused && op.updateInput) 3791 { cm.display.input.reset(op.typing) } 3792 if (takeFocus) { ensureFocus(op.cm) } 3793 } 3794 3795 function endOperation_finish(op) { 3796 var cm = op.cm, display = cm.display, doc = cm.doc 3797 3798 if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) } 3799 3800 // Abort mouse wheel delta measurement, when scrolling explicitly 3801 if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) 3802 { display.wheelStartX = display.wheelStartY = null } 3803 3804 // Propagate the scroll position to the actual DOM scroller 3805 if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll) } 3806 3807 if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true) } 3808 // If we need to scroll a specific position into view, do so. 3809 if (op.scrollToPos) { 3810 var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), 3811 clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin) 3812 maybeScrollWindow(cm, rect) 3813 } 3814 3815 // Fire events for markers that are hidden/unidden by editing or 3816 // undoing 3817 var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers 3818 if (hidden) { for (var i = 0; i < hidden.length; ++i) 3819 { if (!hidden[i].lines.length) { signal(hidden[i], "hide") } } } 3820 if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1) 3821 { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide") } } } 3822 3823 if (display.wrapper.offsetHeight) 3824 { doc.scrollTop = cm.display.scroller.scrollTop } 3825 3826 // Fire change events, and delayed event handlers 3827 if (op.changeObjs) 3828 { signal(cm, "changes", cm, op.changeObjs) } 3829 if (op.update) 3830 { op.update.finish() } 3831 } 3832 3833 // Run the given function in an operation 3834 function runInOp(cm, f) { 3835 if (cm.curOp) { return f() } 3836 startOperation(cm) 3837 try { return f() } 3838 finally { endOperation(cm) } 3839 } 3840 // Wraps a function in an operation. Returns the wrapped function. 3841 function operation(cm, f) { 3842 return function() { 3843 if (cm.curOp) { return f.apply(cm, arguments) } 3844 startOperation(cm) 3845 try { return f.apply(cm, arguments) } 3846 finally { endOperation(cm) } 3847 } 3848 } 3849 // Used to add methods to editor and doc instances, wrapping them in 3850 // operations. 3851 function methodOp(f) { 3852 return function() { 3853 if (this.curOp) { return f.apply(this, arguments) } 3854 startOperation(this) 3855 try { return f.apply(this, arguments) } 3856 finally { endOperation(this) } 3857 } 3858 } 3859 function docMethodOp(f) { 3860 return function() { 3861 var cm = this.cm 3862 if (!cm || cm.curOp) { return f.apply(this, arguments) } 3863 startOperation(cm) 3864 try { return f.apply(this, arguments) } 3865 finally { endOperation(cm) } 3866 } 3867 } 3868 3869 // Updates the display.view data structure for a given change to the 3870 // document. From and to are in pre-change coordinates. Lendiff is 3871 // the amount of lines added or subtracted by the change. This is 3872 // used for changes that span multiple lines, or change the way 3873 // lines are divided into visual lines. regLineChange (below) 3874 // registers single-line changes. 3875 function regChange(cm, from, to, lendiff) { 3876 if (from == null) { from = cm.doc.first } 3877 if (to == null) { to = cm.doc.first + cm.doc.size } 3878 if (!lendiff) { lendiff = 0 } 3879 3880 var display = cm.display 3881 if (lendiff && to < display.viewTo && 3882 (display.updateLineNumbers == null || display.updateLineNumbers > from)) 3883 { display.updateLineNumbers = from } 3884 3885 cm.curOp.viewChanged = true 3886 3887 if (from >= display.viewTo) { // Change after 3888 if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) 3889 { resetView(cm) } 3890 } else if (to <= display.viewFrom) { // Change before 3891 if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { 3892 resetView(cm) 3893 } else { 3894 display.viewFrom += lendiff 3895 display.viewTo += lendiff 3896 } 3897 } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap 3898 resetView(cm) 3899 } else if (from <= display.viewFrom) { // Top overlap 3900 var cut = viewCuttingPoint(cm, to, to + lendiff, 1) 3901 if (cut) { 3902 display.view = display.view.slice(cut.index) 3903 display.viewFrom = cut.lineN 3904 display.viewTo += lendiff 3905 } else { 3906 resetView(cm) 3907 } 3908 } else if (to >= display.viewTo) { // Bottom overlap 3909 var cut$1 = viewCuttingPoint(cm, from, from, -1) 3910 if (cut$1) { 3911 display.view = display.view.slice(0, cut$1.index) 3912 display.viewTo = cut$1.lineN 3913 } else { 3914 resetView(cm) 3915 } 3916 } else { // Gap in the middle 3917 var cutTop = viewCuttingPoint(cm, from, from, -1) 3918 var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1) 3919 if (cutTop && cutBot) { 3920 display.view = display.view.slice(0, cutTop.index) 3921 .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) 3922 .concat(display.view.slice(cutBot.index)) 3923 display.viewTo += lendiff 3924 } else { 3925 resetView(cm) 3926 } 3927 } 3928 3929 var ext = display.externalMeasured 3930 if (ext) { 3931 if (to < ext.lineN) 3932 { ext.lineN += lendiff } 3933 else if (from < ext.lineN + ext.size) 3934 { display.externalMeasured = null } 3935 } 3936 } 3937 3938 // Register a change to a single line. Type must be one of "text", 3939 // "gutter", "class", "widget" 3940 function regLineChange(cm, line, type) { 3941 cm.curOp.viewChanged = true 3942 var display = cm.display, ext = cm.display.externalMeasured 3943 if (ext && line >= ext.lineN && line < ext.lineN + ext.size) 3944 { display.externalMeasured = null } 3945 3946 if (line < display.viewFrom || line >= display.viewTo) { return } 3947 var lineView = display.view[findViewIndex(cm, line)] 3948 if (lineView.node == null) { return } 3949 var arr = lineView.changes || (lineView.changes = []) 3950 if (indexOf(arr, type) == -1) { arr.push(type) } 3951 } 3952 3953 // Clear the view. 3954 function resetView(cm) { 3955 cm.display.viewFrom = cm.display.viewTo = cm.doc.first 3956 cm.display.view = [] 3957 cm.display.viewOffset = 0 3958 } 3959 3960 function viewCuttingPoint(cm, oldN, newN, dir) { 3961 var index = findViewIndex(cm, oldN), diff, view = cm.display.view 3962 if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) 3963 { return {index: index, lineN: newN} } 3964 var n = cm.display.viewFrom 3965 for (var i = 0; i < index; i++) 3966 { n += view[i].size } 3967 if (n != oldN) { 3968 if (dir > 0) { 3969 if (index == view.length - 1) { return null } 3970 diff = (n + view[index].size) - oldN 3971 index++ 3972 } else { 3973 diff = n - oldN 3974 } 3975 oldN += diff; newN += diff 3976 } 3977 while (visualLineNo(cm.doc, newN) != newN) { 3978 if (index == (dir < 0 ? 0 : view.length - 1)) { return null } 3979 newN += dir * view[index - (dir < 0 ? 1 : 0)].size 3980 index += dir 3981 } 3982 return {index: index, lineN: newN} 3983 } 3984 3985 // Force the view to cover a given range, adding empty view element 3986 // or clipping off existing ones as needed. 3987 function adjustView(cm, from, to) { 3988 var display = cm.display, view = display.view 3989 if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { 3990 display.view = buildViewArray(cm, from, to) 3991 display.viewFrom = from 3992 } else { 3993 if (display.viewFrom > from) 3994 { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) } 3995 else if (display.viewFrom < from) 3996 { display.view = display.view.slice(findViewIndex(cm, from)) } 3997 display.viewFrom = from 3998 if (display.viewTo < to) 3999 { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) } 4000 else if (display.viewTo > to) 4001 { display.view = display.view.slice(0, findViewIndex(cm, to)) } 4002 } 4003 display.viewTo = to 4004 } 4005 4006 // Count the number of lines in the view whose DOM representation is 4007 // out of date (or nonexistent). 4008 function countDirtyView(cm) { 4009 var view = cm.display.view, dirty = 0 4010 for (var i = 0; i < view.length; i++) { 4011 var lineView = view[i] 4012 if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty } 4013 } 4014 return dirty 4015 } 4016 4017 // HIGHLIGHT WORKER 4018 4019 function startWorker(cm, time) { 4020 if (cm.doc.highlightFrontier < cm.display.viewTo) 4021 { cm.state.highlight.set(time, bind(highlightWorker, cm)) } 4022 } 4023 4024 function highlightWorker(cm) { 4025 var doc = cm.doc 4026 if (doc.highlightFrontier >= cm.display.viewTo) { return } 4027 var end = +new Date + cm.options.workTime 4028 var context = getContextBefore(cm, doc.highlightFrontier) 4029 var changedLines = [] 4030 4031 doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) { 4032 if (context.line >= cm.display.viewFrom) { // Visible 4033 var oldStyles = line.styles 4034 var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null 4035 var highlighted = highlightLine(cm, line, context, true) 4036 if (resetState) { context.state = resetState } 4037 line.styles = highlighted.styles 4038 var oldCls = line.styleClasses, newCls = highlighted.classes 4039 if (newCls) { line.styleClasses = newCls } 4040 else if (oldCls) { line.styleClasses = null } 4041 var ischange = !oldStyles || oldStyles.length != line.styles.length || 4042 oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass) 4043 for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] } 4044 if (ischange) { changedLines.push(context.line) } 4045 line.stateAfter = context.save() 4046 context.nextLine() 4047 } else { 4048 if (line.text.length <= cm.options.maxHighlightLength) 4049 { processLine(cm, line.text, context) } 4050 line.stateAfter = context.line % 5 == 0 ? context.save() : null 4051 context.nextLine() 4052 } 4053 if (+new Date > end) { 4054 startWorker(cm, cm.options.workDelay) 4055 return true 4056 } 4057 }) 4058 doc.highlightFrontier = context.line 4059 doc.modeFrontier = Math.max(doc.modeFrontier, context.line) 4060 if (changedLines.length) { runInOp(cm, function () { 4061 for (var i = 0; i < changedLines.length; i++) 4062 { regLineChange(cm, changedLines[i], "text") } 4063 }) } 4064 } 4065 4066 // DISPLAY DRAWING 4067 4068 var DisplayUpdate = function(cm, viewport, force) { 4069 var display = cm.display 4070 4071 this.viewport = viewport 4072 // Store some values that we'll need later (but don't want to force a relayout for) 4073 this.visible = visibleLines(display, cm.doc, viewport) 4074 this.editorIsHidden = !display.wrapper.offsetWidth 4075 this.wrapperHeight = display.wrapper.clientHeight 4076 this.wrapperWidth = display.wrapper.clientWidth 4077 this.oldDisplayWidth = displayWidth(cm) 4078 this.force = force 4079 this.dims = getDimensions(cm) 4080 this.events = [] 4081 }; 4082 4083 DisplayUpdate.prototype.signal = function (emitter, type) { 4084 if (hasHandler(emitter, type)) 4085 { this.events.push(arguments) } 4086 }; 4087 DisplayUpdate.prototype.finish = function () { 4088 var this$1 = this; 4089 4090 for (var i = 0; i < this.events.length; i++) 4091 { signal.apply(null, this$1.events[i]) } 4092 }; 4093 4094 function maybeClipScrollbars(cm) { 4095 var display = cm.display 4096 if (!display.scrollbarsClipped && display.scroller.offsetWidth) { 4097 display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth 4098 display.heightForcer.style.height = scrollGap(cm) + "px" 4099 display.sizer.style.marginBottom = -display.nativeBarWidth + "px" 4100 display.sizer.style.borderRightWidth = scrollGap(cm) + "px" 4101 display.scrollbarsClipped = true 4102 } 4103 } 4104 4105 function selectionSnapshot(cm) { 4106 if (cm.hasFocus()) { return null } 4107 var active = activeElt() 4108 if (!active || !contains(cm.display.lineDiv, active)) { return null } 4109 var result = {activeElt: active} 4110 if (window.getSelection) { 4111 var sel = window.getSelection() 4112 if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) { 4113 result.anchorNode = sel.anchorNode 4114 result.anchorOffset = sel.anchorOffset 4115 result.focusNode = sel.focusNode 4116 result.focusOffset = sel.focusOffset 4117 } 4118 } 4119 return result 4120 } 4121 4122 function restoreSelection(snapshot) { 4123 if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return } 4124 snapshot.activeElt.focus() 4125 if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) { 4126 var sel = window.getSelection(), range = document.createRange() 4127 range.setEnd(snapshot.anchorNode, snapshot.anchorOffset) 4128 range.collapse(false) 4129 sel.removeAllRanges() 4130 sel.addRange(range) 4131 sel.extend(snapshot.focusNode, snapshot.focusOffset) 4132 } 4133 } 4134 4135 // Does the actual updating of the line display. Bails out 4136 // (returning false) when there is nothing to be done and forced is 4137 // false. 4138 function updateDisplayIfNeeded(cm, update) { 4139 var display = cm.display, doc = cm.doc 4140 4141 if (update.editorIsHidden) { 4142 resetView(cm) 4143 return false 4144 } 4145 4146 // Bail out if the visible area is already rendered and nothing changed. 4147 if (!update.force && 4148 update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && 4149 (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && 4150 display.renderedView == display.view && countDirtyView(cm) == 0) 4151 { return false } 4152 4153 if (maybeUpdateLineNumberWidth(cm)) { 4154 resetView(cm) 4155 update.dims = getDimensions(cm) 4156 } 4157 4158 // Compute a suitable new viewport (from & to) 4159 var end = doc.first + doc.size 4160 var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first) 4161 var to = Math.min(end, update.visible.to + cm.options.viewportMargin) 4162 if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) } 4163 if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) } 4164 if (sawCollapsedSpans) { 4165 from = visualLineNo(cm.doc, from) 4166 to = visualLineEndNo(cm.doc, to) 4167 } 4168 4169 var different = from != display.viewFrom || to != display.viewTo || 4170 display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth 4171 adjustView(cm, from, to) 4172 4173 display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)) 4174 // Position the mover div to align with the current scroll position 4175 cm.display.mover.style.top = display.viewOffset + "px" 4176 4177 var toUpdate = countDirtyView(cm) 4178 if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && 4179 (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) 4180 { return false } 4181 4182 // For big changes, we hide the enclosing element during the 4183 // update, since that speeds up the operations on most browsers. 4184 var selSnapshot = selectionSnapshot(cm) 4185 if (toUpdate > 4) { display.lineDiv.style.display = "none" } 4186 patchDisplay(cm, display.updateLineNumbers, update.dims) 4187 if (toUpdate > 4) { display.lineDiv.style.display = "" } 4188 display.renderedView = display.view 4189 // There might have been a widget with a focused element that got 4190 // hidden or updated, if so re-focus it. 4191 restoreSelection(selSnapshot) 4192 4193 // Prevent selection and cursors from interfering with the scroll 4194 // width and height. 4195 removeChildren(display.cursorDiv) 4196 removeChildren(display.selectionDiv) 4197 display.gutters.style.height = display.sizer.style.minHeight = 0 4198 4199 if (different) { 4200 display.lastWrapHeight = update.wrapperHeight 4201 display.lastWrapWidth = update.wrapperWidth 4202 startWorker(cm, 400) 4203 } 4204 4205 display.updateLineNumbers = null 4206 4207 return true 4208 } 4209 4210 function postUpdateDisplay(cm, update) { 4211 var viewport = update.viewport 4212 4213 for (var first = true;; first = false) { 4214 if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) { 4215 // Clip forced viewport to actual scrollable area. 4216 if (viewport && viewport.top != null) 4217 { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} } 4218 // Updated line heights might result in the drawn area not 4219 // actually covering the viewport. Keep looping until it does. 4220 update.visible = visibleLines(cm.display, cm.doc, viewport) 4221 if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) 4222 { break } 4223 } 4224 if (!updateDisplayIfNeeded(cm, update)) { break } 4225 updateHeightsInViewport(cm) 4226 var barMeasure = measureForScrollbars(cm) 4227 updateSelection(cm) 4228 updateScrollbars(cm, barMeasure) 4229 setDocumentHeight(cm, barMeasure) 4230 update.force = false 4231 } 4232 4233 update.signal(cm, "update", cm) 4234 if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { 4235 update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo) 4236 cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo 4237 } 4238 } 4239 4240 function updateDisplaySimple(cm, viewport) { 4241 var update = new DisplayUpdate(cm, viewport) 4242 if (updateDisplayIfNeeded(cm, update)) { 4243 updateHeightsInViewport(cm) 4244 postUpdateDisplay(cm, update) 4245 var barMeasure = measureForScrollbars(cm) 4246 updateSelection(cm) 4247 updateScrollbars(cm, barMeasure) 4248 setDocumentHeight(cm, barMeasure) 4249 update.finish() 4250 } 4251 } 4252 4253 // Sync the actual display DOM structure with display.view, removing 4254 // nodes for lines that are no longer in view, and creating the ones 4255 // that are not there yet, and updating the ones that are out of 4256 // date. 4257 function patchDisplay(cm, updateNumbersFrom, dims) { 4258 var display = cm.display, lineNumbers = cm.options.lineNumbers 4259 var container = display.lineDiv, cur = container.firstChild 4260 4261 function rm(node) { 4262 var next = node.nextSibling 4263 // Works around a throw-scroll bug in OS X Webkit 4264 if (webkit && mac && cm.display.currentWheelTarget == node) 4265 { node.style.display = "none" } 4266 else 4267 { node.parentNode.removeChild(node) } 4268 return next 4269 } 4270 4271 var view = display.view, lineN = display.viewFrom 4272 // Loop over the elements in the view, syncing cur (the DOM nodes 4273 // in display.lineDiv) with the view as we go. 4274 for (var i = 0; i < view.length; i++) { 4275 var lineView = view[i] 4276 if (lineView.hidden) { 4277 } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet 4278 var node = buildLineElement(cm, lineView, lineN, dims) 4279 container.insertBefore(node, cur) 4280 } else { // Already drawn 4281 while (cur != lineView.node) { cur = rm(cur) } 4282 var updateNumber = lineNumbers && updateNumbersFrom != null && 4283 updateNumbersFrom <= lineN && lineView.lineNumber 4284 if (lineView.changes) { 4285 if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false } 4286 updateLineForChanges(cm, lineView, lineN, dims) 4287 } 4288 if (updateNumber) { 4289 removeChildren(lineView.lineNumber) 4290 lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))) 4291 } 4292 cur = lineView.node.nextSibling 4293 } 4294 lineN += lineView.size 4295 } 4296 while (cur) { cur = rm(cur) } 4297 } 4298 4299 function updateGutterSpace(cm) { 4300 var width = cm.display.gutters.offsetWidth 4301 cm.display.sizer.style.marginLeft = width + "px" 4302 } 4303 4304 function setDocumentHeight(cm, measure) { 4305 cm.display.sizer.style.minHeight = measure.docHeight + "px" 4306 cm.display.heightForcer.style.top = measure.docHeight + "px" 4307 cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px" 4308 } 4309 4310 // Rebuild the gutter elements, ensure the margin to the left of the 4311 // code matches their width. 4312 function updateGutters(cm) { 4313 var gutters = cm.display.gutters, specs = cm.options.gutters 4314 removeChildren(gutters) 4315 var i = 0 4316 for (; i < specs.length; ++i) { 4317 var gutterClass = specs[i] 4318 var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)) 4319 if (gutterClass == "CodeMirror-linenumbers") { 4320 cm.display.lineGutter = gElt 4321 gElt.style.width = (cm.display.lineNumWidth || 1) + "px" 4322 } 4323 } 4324 gutters.style.display = i ? "" : "none" 4325 updateGutterSpace(cm) 4326 } 4327 4328 // Make sure the gutters options contains the element 4329 // "CodeMirror-linenumbers" when the lineNumbers option is true. 4330 function setGuttersForLineNumbers(options) { 4331 var found = indexOf(options.gutters, "CodeMirror-linenumbers") 4332 if (found == -1 && options.lineNumbers) { 4333 options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]) 4334 } else if (found > -1 && !options.lineNumbers) { 4335 options.gutters = options.gutters.slice(0) 4336 options.gutters.splice(found, 1) 4337 } 4338 } 4339 4340 var wheelSamples = 0; 4341 var wheelPixelsPerUnit = null; 4342 // Fill in a browser-detected starting value on browsers where we 4343 // know one. These don't have to be accurate -- the result of them 4344 // being wrong would just be a slight flicker on the first wheel 4345 // scroll (if it is large enough). 4346 if (ie) { wheelPixelsPerUnit = -.53 } 4347 else if (gecko) { wheelPixelsPerUnit = 15 } 4348 else if (chrome) { wheelPixelsPerUnit = -.7 } 4349 else if (safari) { wheelPixelsPerUnit = -1/3 } 4350 4351 function wheelEventDelta(e) { 4352 var dx = e.wheelDeltaX, dy = e.wheelDeltaY 4353 if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail } 4354 if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail } 4355 else if (dy == null) { dy = e.wheelDelta } 4356 return {x: dx, y: dy} 4357 } 4358 function wheelEventPixels(e) { 4359 var delta = wheelEventDelta(e) 4360 delta.x *= wheelPixelsPerUnit 4361 delta.y *= wheelPixelsPerUnit 4362 return delta 4363 } 4364 4365 function onScrollWheel(cm, e) { 4366 var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y 4367 4368 var display = cm.display, scroll = display.scroller 4369 // Quit if there's nothing to scroll here 4370 var canScrollX = scroll.scrollWidth > scroll.clientWidth 4371 var canScrollY = scroll.scrollHeight > scroll.clientHeight 4372 if (!(dx && canScrollX || dy && canScrollY)) { return } 4373 4374 // Webkit browsers on OS X abort momentum scrolls when the target 4375 // of the scroll event is removed from the scrollable element. 4376 // This hack (see related code in patchDisplay) makes sure the 4377 // element is kept around. 4378 if (dy && mac && webkit) { 4379 outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { 4380 for (var i = 0; i < view.length; i++) { 4381 if (view[i].node == cur) { 4382 cm.display.currentWheelTarget = cur 4383 break outer 4384 } 4385 } 4386 } 4387 } 4388 4389 // On some browsers, horizontal scrolling will cause redraws to 4390 // happen before the gutter has been realigned, causing it to 4391 // wriggle around in a most unseemly way. When we have an 4392 // estimated pixels/delta value, we just handle horizontal 4393 // scrolling entirely here. It'll be slightly off from native, but 4394 // better than glitching out. 4395 if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { 4396 if (dy && canScrollY) 4397 { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)) } 4398 setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit)) 4399 // Only prevent default scrolling if vertical scrolling is 4400 // actually possible. Otherwise, it causes vertical scroll 4401 // jitter on OSX trackpads when deltaX is small and deltaY 4402 // is large (issue #3579) 4403 if (!dy || (dy && canScrollY)) 4404 { e_preventDefault(e) } 4405 display.wheelStartX = null // Abort measurement, if in progress 4406 return 4407 } 4408 4409 // 'Project' the visible viewport to cover the area that is being 4410 // scrolled into view (if we know enough to estimate it). 4411 if (dy && wheelPixelsPerUnit != null) { 4412 var pixels = dy * wheelPixelsPerUnit 4413 var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight 4414 if (pixels < 0) { top = Math.max(0, top + pixels - 50) } 4415 else { bot = Math.min(cm.doc.height, bot + pixels + 50) } 4416 updateDisplaySimple(cm, {top: top, bottom: bot}) 4417 } 4418 4419 if (wheelSamples < 20) { 4420 if (display.wheelStartX == null) { 4421 display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop 4422 display.wheelDX = dx; display.wheelDY = dy 4423 setTimeout(function () { 4424 if (display.wheelStartX == null) { return } 4425 var movedX = scroll.scrollLeft - display.wheelStartX 4426 var movedY = scroll.scrollTop - display.wheelStartY 4427 var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || 4428 (movedX && display.wheelDX && movedX / display.wheelDX) 4429 display.wheelStartX = display.wheelStartY = null 4430 if (!sample) { return } 4431 wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1) 4432 ++wheelSamples 4433 }, 200) 4434 } else { 4435 display.wheelDX += dx; display.wheelDY += dy 4436 } 4437 } 4438 } 4439 4440 // Selection objects are immutable. A new one is created every time 4441 // the selection changes. A selection is one or more non-overlapping 4442 // (and non-touching) ranges, sorted, and an integer that indicates 4443 // which one is the primary selection (the one that's scrolled into 4444 // view, that getCursor returns, etc). 4445 var Selection = function(ranges, primIndex) { 4446 this.ranges = ranges 4447 this.primIndex = primIndex 4448 }; 4449 4450 Selection.prototype.primary = function () { return this.ranges[this.primIndex] }; 4451 4452 Selection.prototype.equals = function (other) { 4453 var this$1 = this; 4454 4455 if (other == this) { return true } 4456 if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false } 4457 for (var i = 0; i < this.ranges.length; i++) { 4458 var here = this$1.ranges[i], there = other.ranges[i] 4459 if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false } 4460 } 4461 return true 4462 }; 4463 4464 Selection.prototype.deepCopy = function () { 4465 var this$1 = this; 4466 4467 var out = [] 4468 for (var i = 0; i < this.ranges.length; i++) 4469 { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) } 4470 return new Selection(out, this.primIndex) 4471 }; 4472 4473 Selection.prototype.somethingSelected = function () { 4474 var this$1 = this; 4475 4476 for (var i = 0; i < this.ranges.length; i++) 4477 { if (!this$1.ranges[i].empty()) { return true } } 4478 return false 4479 }; 4480 4481 Selection.prototype.contains = function (pos, end) { 4482 var this$1 = this; 4483 4484 if (!end) { end = pos } 4485 for (var i = 0; i < this.ranges.length; i++) { 4486 var range = this$1.ranges[i] 4487 if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) 4488 { return i } 4489 } 4490 return -1 4491 }; 4492 4493 var Range = function(anchor, head) { 4494 this.anchor = anchor; this.head = head 4495 }; 4496 4497 Range.prototype.from = function () { return minPos(this.anchor, this.head) }; 4498 Range.prototype.to = function () { return maxPos(this.anchor, this.head) }; 4499 Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch }; 4500 4501 // Take an unsorted, potentially overlapping set of ranges, and 4502 // build a selection out of it. 'Consumes' ranges array (modifying 4503 // it). 4504 function normalizeSelection(ranges, primIndex) { 4505 var prim = ranges[primIndex] 4506 ranges.sort(function (a, b) { return cmp(a.from(), b.from()); }) 4507 primIndex = indexOf(ranges, prim) 4508 for (var i = 1; i < ranges.length; i++) { 4509 var cur = ranges[i], prev = ranges[i - 1] 4510 if (cmp(prev.to(), cur.from()) >= 0) { 4511 var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()) 4512 var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head 4513 if (i <= primIndex) { --primIndex } 4514 ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)) 4515 } 4516 } 4517 return new Selection(ranges, primIndex) 4518 } 4519 4520 function simpleSelection(anchor, head) { 4521 return new Selection([new Range(anchor, head || anchor)], 0) 4522 } 4523 4524 // Compute the position of the end of a change (its 'to' property 4525 // refers to the pre-change end). 4526 function changeEnd(change) { 4527 if (!change.text) { return change.to } 4528 return Pos(change.from.line + change.text.length - 1, 4529 lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)) 4530 } 4531 4532 // Adjust a position to refer to the post-change position of the 4533 // same text, or the end of the change if the change covers it. 4534 function adjustForChange(pos, change) { 4535 if (cmp(pos, change.from) < 0) { return pos } 4536 if (cmp(pos, change.to) <= 0) { return changeEnd(change) } 4537 4538 var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch 4539 if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch } 4540 return Pos(line, ch) 4541 } 4542 4543 function computeSelAfterChange(doc, change) { 4544 var out = [] 4545 for (var i = 0; i < doc.sel.ranges.length; i++) { 4546 var range = doc.sel.ranges[i] 4547 out.push(new Range(adjustForChange(range.anchor, change), 4548 adjustForChange(range.head, change))) 4549 } 4550 return normalizeSelection(out, doc.sel.primIndex) 4551 } 4552 4553 function offsetPos(pos, old, nw) { 4554 if (pos.line == old.line) 4555 { return Pos(nw.line, pos.ch - old.ch + nw.ch) } 4556 else 4557 { return Pos(nw.line + (pos.line - old.line), pos.ch) } 4558 } 4559 4560 // Used by replaceSelections to allow moving the selection to the 4561 // start or around the replaced test. Hint may be "start" or "around". 4562 function computeReplacedSel(doc, changes, hint) { 4563 var out = [] 4564 var oldPrev = Pos(doc.first, 0), newPrev = oldPrev 4565 for (var i = 0; i < changes.length; i++) { 4566 var change = changes[i] 4567 var from = offsetPos(change.from, oldPrev, newPrev) 4568 var to = offsetPos(changeEnd(change), oldPrev, newPrev) 4569 oldPrev = change.to 4570 newPrev = to 4571 if (hint == "around") { 4572 var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0 4573 out[i] = new Range(inv ? to : from, inv ? from : to) 4574 } else { 4575 out[i] = new Range(from, from) 4576 } 4577 } 4578 return new Selection(out, doc.sel.primIndex) 4579 } 4580 4581 // Used to get the editor into a consistent state again when options change. 4582 4583 function loadMode(cm) { 4584 cm.doc.mode = getMode(cm.options, cm.doc.modeOption) 4585 resetModeState(cm) 4586 } 4587 4588 function resetModeState(cm) { 4589 cm.doc.iter(function (line) { 4590 if (line.stateAfter) { line.stateAfter = null } 4591 if (line.styles) { line.styles = null } 4592 }) 4593 cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first 4594 startWorker(cm, 100) 4595 cm.state.modeGen++ 4596 if (cm.curOp) { regChange(cm) } 4597 } 4598 4599 // DOCUMENT DATA STRUCTURE 4600 4601 // By default, updates that start and end at the beginning of a line 4602 // are treated specially, in order to make the association of line 4603 // widgets and marker elements with the text behave more intuitive. 4604 function isWholeLineUpdate(doc, change) { 4605 return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && 4606 (!doc.cm || doc.cm.options.wholeLineUpdateBefore) 4607 } 4608 4609 // Perform a change on the document data structure. 4610 function updateDoc(doc, change, markedSpans, estimateHeight) { 4611 function spansFor(n) {return markedSpans ? markedSpans[n] : null} 4612 function update(line, text, spans) { 4613 updateLine(line, text, spans, estimateHeight) 4614 signalLater(line, "change", line, change) 4615 } 4616 function linesFor(start, end) { 4617 var result = [] 4618 for (var i = start; i < end; ++i) 4619 { result.push(new Line(text[i], spansFor(i), estimateHeight)) } 4620 return result 4621 } 4622 4623 var from = change.from, to = change.to, text = change.text 4624 var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line) 4625 var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line 4626 4627 // Adjust the line structure 4628 if (change.full) { 4629 doc.insert(0, linesFor(0, text.length)) 4630 doc.remove(text.length, doc.size - text.length) 4631 } else if (isWholeLineUpdate(doc, change)) { 4632 // This is a whole-line replace. Treated specially to make 4633 // sure line objects move the way they are supposed to. 4634 var added = linesFor(0, text.length - 1) 4635 update(lastLine, lastLine.text, lastSpans) 4636 if (nlines) { doc.remove(from.line, nlines) } 4637 if (added.length) { doc.insert(from.line, added) } 4638 } else if (firstLine == lastLine) { 4639 if (text.length == 1) { 4640 update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans) 4641 } else { 4642 var added$1 = linesFor(1, text.length - 1) 4643 added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)) 4644 update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) 4645 doc.insert(from.line + 1, added$1) 4646 } 4647 } else if (text.length == 1) { 4648 update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)) 4649 doc.remove(from.line + 1, nlines) 4650 } else { 4651 update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) 4652 update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans) 4653 var added$2 = linesFor(1, text.length - 1) 4654 if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) } 4655 doc.insert(from.line + 1, added$2) 4656 } 4657 4658 signalLater(doc, "change", doc, change) 4659 } 4660 4661 // Call f for all linked documents. 4662 function linkedDocs(doc, f, sharedHistOnly) { 4663 function propagate(doc, skip, sharedHist) { 4664 if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) { 4665 var rel = doc.linked[i] 4666 if (rel.doc == skip) { continue } 4667 var shared = sharedHist && rel.sharedHist 4668 if (sharedHistOnly && !shared) { continue } 4669 f(rel.doc, shared) 4670 propagate(rel.doc, doc, shared) 4671 } } 4672 } 4673 propagate(doc, null, true) 4674 } 4675 4676 // Attach a document to an editor. 4677 function attachDoc(cm, doc) { 4678 if (doc.cm) { throw new Error("This document is already in use.") } 4679 cm.doc = doc 4680 doc.cm = cm 4681 estimateLineHeights(cm) 4682 loadMode(cm) 4683 setDirectionClass(cm) 4684 if (!cm.options.lineWrapping) { findMaxLine(cm) } 4685 cm.options.mode = doc.modeOption 4686 regChange(cm) 4687 } 4688 4689 function setDirectionClass(cm) { 4690 ;(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl") 4691 } 4692 4693 function directionChanged(cm) { 4694 runInOp(cm, function () { 4695 setDirectionClass(cm) 4696 regChange(cm) 4697 }) 4698 } 4699 4700 function History(startGen) { 4701 // Arrays of change events and selections. Doing something adds an 4702 // event to done and clears undo. Undoing moves events from done 4703 // to undone, redoing moves them in the other direction. 4704 this.done = []; this.undone = [] 4705 this.undoDepth = Infinity 4706 // Used to track when changes can be merged into a single undo 4707 // event 4708 this.lastModTime = this.lastSelTime = 0 4709 this.lastOp = this.lastSelOp = null 4710 this.lastOrigin = this.lastSelOrigin = null 4711 // Used by the isClean() method 4712 this.generation = this.maxGeneration = startGen || 1 4713 } 4714 4715 // Create a history change event from an updateDoc-style change 4716 // object. 4717 function historyChangeFromChange(doc, change) { 4718 var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)} 4719 attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1) 4720 linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true) 4721 return histChange 4722 } 4723 4724 // Pop all selection events off the end of a history array. Stop at 4725 // a change event. 4726 function clearSelectionEvents(array) { 4727 while (array.length) { 4728 var last = lst(array) 4729 if (last.ranges) { array.pop() } 4730 else { break } 4731 } 4732 } 4733 4734 // Find the top change event in the history. Pop off selection 4735 // events that are in the way. 4736 function lastChangeEvent(hist, force) { 4737 if (force) { 4738 clearSelectionEvents(hist.done) 4739 return lst(hist.done) 4740 } else if (hist.done.length && !lst(hist.done).ranges) { 4741 return lst(hist.done) 4742 } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { 4743 hist.done.pop() 4744 return lst(hist.done) 4745 } 4746 } 4747 4748 // Register a change in the history. Merges changes that are within 4749 // a single operation, or are close together with an origin that 4750 // allows merging (starting with "+") into a single event. 4751 function addChangeToHistory(doc, change, selAfter, opId) { 4752 var hist = doc.history 4753 hist.undone.length = 0 4754 var time = +new Date, cur 4755 var last 4756 4757 if ((hist.lastOp == opId || 4758 hist.lastOrigin == change.origin && change.origin && 4759 ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) || 4760 change.origin.charAt(0) == "*")) && 4761 (cur = lastChangeEvent(hist, hist.lastOp == opId))) { 4762 // Merge this change into the last event 4763 last = lst(cur.changes) 4764 if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { 4765 // Optimized case for simple insertion -- don't want to add 4766 // new changesets for every character typed 4767 last.to = changeEnd(change) 4768 } else { 4769 // Add new sub-event 4770 cur.changes.push(historyChangeFromChange(doc, change)) 4771 } 4772 } else { 4773 // Can not be merged, start a new event. 4774 var before = lst(hist.done) 4775 if (!before || !before.ranges) 4776 { pushSelectionToHistory(doc.sel, hist.done) } 4777 cur = {changes: [historyChangeFromChange(doc, change)], 4778 generation: hist.generation} 4779 hist.done.push(cur) 4780 while (hist.done.length > hist.undoDepth) { 4781 hist.done.shift() 4782 if (!hist.done[0].ranges) { hist.done.shift() } 4783 } 4784 } 4785 hist.done.push(selAfter) 4786 hist.generation = ++hist.maxGeneration 4787 hist.lastModTime = hist.lastSelTime = time 4788 hist.lastOp = hist.lastSelOp = opId 4789 hist.lastOrigin = hist.lastSelOrigin = change.origin 4790 4791 if (!last) { signal(doc, "historyAdded") } 4792 } 4793 4794 function selectionEventCanBeMerged(doc, origin, prev, sel) { 4795 var ch = origin.charAt(0) 4796 return ch == "*" || 4797 ch == "+" && 4798 prev.ranges.length == sel.ranges.length && 4799 prev.somethingSelected() == sel.somethingSelected() && 4800 new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500) 4801 } 4802 4803 // Called whenever the selection changes, sets the new selection as 4804 // the pending selection in the history, and pushes the old pending 4805 // selection into the 'done' array when it was significantly 4806 // different (in number of selected ranges, emptiness, or time). 4807 function addSelectionToHistory(doc, sel, opId, options) { 4808 var hist = doc.history, origin = options && options.origin 4809 4810 // A new event is started when the previous origin does not match 4811 // the current, or the origins don't allow matching. Origins 4812 // starting with * are always merged, those starting with + are 4813 // merged when similar and close together in time. 4814 if (opId == hist.lastSelOp || 4815 (origin && hist.lastSelOrigin == origin && 4816 (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || 4817 selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) 4818 { hist.done[hist.done.length - 1] = sel } 4819 else 4820 { pushSelectionToHistory(sel, hist.done) } 4821 4822 hist.lastSelTime = +new Date 4823 hist.lastSelOrigin = origin 4824 hist.lastSelOp = opId 4825 if (options && options.clearRedo !== false) 4826 { clearSelectionEvents(hist.undone) } 4827 } 4828 4829 function pushSelectionToHistory(sel, dest) { 4830 var top = lst(dest) 4831 if (!(top && top.ranges && top.equals(sel))) 4832 { dest.push(sel) } 4833 } 4834 4835 // Used to store marked span information in the history. 4836 function attachLocalSpans(doc, change, from, to) { 4837 var existing = change["spans_" + doc.id], n = 0 4838 doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) { 4839 if (line.markedSpans) 4840 { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans } 4841 ++n 4842 }) 4843 } 4844 4845 // When un/re-doing restores text containing marked spans, those 4846 // that have been explicitly cleared should not be restored. 4847 function removeClearedSpans(spans) { 4848 if (!spans) { return null } 4849 var out 4850 for (var i = 0; i < spans.length; ++i) { 4851 if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } } 4852 else if (out) { out.push(spans[i]) } 4853 } 4854 return !out ? spans : out.length ? out : null 4855 } 4856 4857 // Retrieve and filter the old marked spans stored in a change event. 4858 function getOldSpans(doc, change) { 4859 var found = change["spans_" + doc.id] 4860 if (!found) { return null } 4861 var nw = [] 4862 for (var i = 0; i < change.text.length; ++i) 4863 { nw.push(removeClearedSpans(found[i])) } 4864 return nw 4865 } 4866 4867 // Used for un/re-doing changes from the history. Combines the 4868 // result of computing the existing spans with the set of spans that 4869 // existed in the history (so that deleting around a span and then 4870 // undoing brings back the span). 4871 function mergeOldSpans(doc, change) { 4872 var old = getOldSpans(doc, change) 4873 var stretched = stretchSpansOverChange(doc, change) 4874 if (!old) { return stretched } 4875 if (!stretched) { return old } 4876 4877 for (var i = 0; i < old.length; ++i) { 4878 var oldCur = old[i], stretchCur = stretched[i] 4879 if (oldCur && stretchCur) { 4880 spans: for (var j = 0; j < stretchCur.length; ++j) { 4881 var span = stretchCur[j] 4882 for (var k = 0; k < oldCur.length; ++k) 4883 { if (oldCur[k].marker == span.marker) { continue spans } } 4884 oldCur.push(span) 4885 } 4886 } else if (stretchCur) { 4887 old[i] = stretchCur 4888 } 4889 } 4890 return old 4891 } 4892 4893 // Used both to provide a JSON-safe object in .getHistory, and, when 4894 // detaching a document, to split the history in two 4895 function copyHistoryArray(events, newGroup, instantiateSel) { 4896 var copy = [] 4897 for (var i = 0; i < events.length; ++i) { 4898 var event = events[i] 4899 if (event.ranges) { 4900 copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event) 4901 continue 4902 } 4903 var changes = event.changes, newChanges = [] 4904 copy.push({changes: newChanges}) 4905 for (var j = 0; j < changes.length; ++j) { 4906 var change = changes[j], m = (void 0) 4907 newChanges.push({from: change.from, to: change.to, text: change.text}) 4908 if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) { 4909 if (indexOf(newGroup, Number(m[1])) > -1) { 4910 lst(newChanges)[prop] = change[prop] 4911 delete change[prop] 4912 } 4913 } } } 4914 } 4915 } 4916 return copy 4917 } 4918 4919 // The 'scroll' parameter given to many of these indicated whether 4920 // the new cursor position should be scrolled into view after 4921 // modifying the selection. 4922 4923 // If shift is held or the extend flag is set, extends a range to 4924 // include a given position (and optionally a second position). 4925 // Otherwise, simply returns the range between the given positions. 4926 // Used for cursor motion and such. 4927 function extendRange(range, head, other, extend) { 4928 if (extend) { 4929 var anchor = range.anchor 4930 if (other) { 4931 var posBefore = cmp(head, anchor) < 0 4932 if (posBefore != (cmp(other, anchor) < 0)) { 4933 anchor = head 4934 head = other 4935 } else if (posBefore != (cmp(head, other) < 0)) { 4936 head = other 4937 } 4938 } 4939 return new Range(anchor, head) 4940 } else { 4941 return new Range(other || head, head) 4942 } 4943 } 4944 4945 // Extend the primary selection range, discard the rest. 4946 function extendSelection(doc, head, other, options, extend) { 4947 if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend) } 4948 setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options) 4949 } 4950 4951 // Extend all selections (pos is an array of selections with length 4952 // equal the number of selections) 4953 function extendSelections(doc, heads, options) { 4954 var out = [] 4955 var extend = doc.cm && (doc.cm.display.shift || doc.extend) 4956 for (var i = 0; i < doc.sel.ranges.length; i++) 4957 { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend) } 4958 var newSel = normalizeSelection(out, doc.sel.primIndex) 4959 setSelection(doc, newSel, options) 4960 } 4961 4962 // Updates a single range in the selection. 4963 function replaceOneSelection(doc, i, range, options) { 4964 var ranges = doc.sel.ranges.slice(0) 4965 ranges[i] = range 4966 setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options) 4967 } 4968 4969 // Reset the selection to a single range. 4970 function setSimpleSelection(doc, anchor, head, options) { 4971 setSelection(doc, simpleSelection(anchor, head), options) 4972 } 4973 4974 // Give beforeSelectionChange handlers a change to influence a 4975 // selection update. 4976 function filterSelectionChange(doc, sel, options) { 4977 var obj = { 4978 ranges: sel.ranges, 4979 update: function(ranges) { 4980 var this$1 = this; 4981 4982 this.ranges = [] 4983 for (var i = 0; i < ranges.length; i++) 4984 { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), 4985 clipPos(doc, ranges[i].head)) } 4986 }, 4987 origin: options && options.origin 4988 } 4989 signal(doc, "beforeSelectionChange", doc, obj) 4990 if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj) } 4991 if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) } 4992 else { return sel } 4993 } 4994 4995 function setSelectionReplaceHistory(doc, sel, options) { 4996 var done = doc.history.done, last = lst(done) 4997 if (last && last.ranges) { 4998 done[done.length - 1] = sel 4999 setSelectionNoUndo(doc, sel, options) 5000 } else { 5001 setSelection(doc, sel, options) 5002 } 5003 } 5004 5005 // Set a new selection. 5006 function setSelection(doc, sel, options) { 5007 setSelectionNoUndo(doc, sel, options) 5008 addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options) 5009 } 5010 5011 function setSelectionNoUndo(doc, sel, options) { 5012 if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) 5013 { sel = filterSelectionChange(doc, sel, options) } 5014 5015 var bias = options && options.bias || 5016 (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1) 5017 setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)) 5018 5019 if (!(options && options.scroll === false) && doc.cm) 5020 { ensureCursorVisible(doc.cm) } 5021 } 5022 5023 function setSelectionInner(doc, sel) { 5024 if (sel.equals(doc.sel)) { return } 5025 5026 doc.sel = sel 5027 5028 if (doc.cm) { 5029 doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true 5030 signalCursorActivity(doc.cm) 5031 } 5032 signalLater(doc, "cursorActivity", doc) 5033 } 5034 5035 // Verify that the selection does not partially select any atomic 5036 // marked ranges. 5037 function reCheckSelection(doc) { 5038 setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false)) 5039 } 5040 5041 // Return a selection that does not partially select any atomic 5042 // ranges. 5043 function skipAtomicInSelection(doc, sel, bias, mayClear) { 5044 var out 5045 for (var i = 0; i < sel.ranges.length; i++) { 5046 var range = sel.ranges[i] 5047 var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i] 5048 var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear) 5049 var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear) 5050 if (out || newAnchor != range.anchor || newHead != range.head) { 5051 if (!out) { out = sel.ranges.slice(0, i) } 5052 out[i] = new Range(newAnchor, newHead) 5053 } 5054 } 5055 return out ? normalizeSelection(out, sel.primIndex) : sel 5056 } 5057 5058 function skipAtomicInner(doc, pos, oldPos, dir, mayClear) { 5059 var line = getLine(doc, pos.line) 5060 if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { 5061 var sp = line.markedSpans[i], m = sp.marker 5062 if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) && 5063 (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) { 5064 if (mayClear) { 5065 signal(m, "beforeCursorEnter") 5066 if (m.explicitlyCleared) { 5067 if (!line.markedSpans) { break } 5068 else {--i; continue} 5069 } 5070 } 5071 if (!m.atomic) { continue } 5072 5073 if (oldPos) { 5074 var near = m.find(dir < 0 ? 1 : -1), diff = (void 0) 5075 if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) 5076 { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) } 5077 if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) 5078 { return skipAtomicInner(doc, near, pos, dir, mayClear) } 5079 } 5080 5081 var far = m.find(dir < 0 ? -1 : 1) 5082 if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) 5083 { far = movePos(doc, far, dir, far.line == pos.line ? line : null) } 5084 return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null 5085 } 5086 } } 5087 return pos 5088 } 5089 5090 // Ensure a given position is not inside an atomic range. 5091 function skipAtomic(doc, pos, oldPos, bias, mayClear) { 5092 var dir = bias || 1 5093 var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) || 5094 (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) || 5095 skipAtomicInner(doc, pos, oldPos, -dir, mayClear) || 5096 (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true)) 5097 if (!found) { 5098 doc.cantEdit = true 5099 return Pos(doc.first, 0) 5100 } 5101 return found 5102 } 5103 5104 function movePos(doc, pos, dir, line) { 5105 if (dir < 0 && pos.ch == 0) { 5106 if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) } 5107 else { return null } 5108 } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) { 5109 if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) } 5110 else { return null } 5111 } else { 5112 return new Pos(pos.line, pos.ch + dir) 5113 } 5114 } 5115 5116 function selectAll(cm) { 5117 cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll) 5118 } 5119 5120 // UPDATING 5121 5122 // Allow "beforeChange" event handlers to influence a change 5123 function filterChange(doc, change, update) { 5124 var obj = { 5125 canceled: false, 5126 from: change.from, 5127 to: change.to, 5128 text: change.text, 5129 origin: change.origin, 5130 cancel: function () { return obj.canceled = true; } 5131 } 5132 if (update) { obj.update = function (from, to, text, origin) { 5133 if (from) { obj.from = clipPos(doc, from) } 5134 if (to) { obj.to = clipPos(doc, to) } 5135 if (text) { obj.text = text } 5136 if (origin !== undefined) { obj.origin = origin } 5137 } } 5138 signal(doc, "beforeChange", doc, obj) 5139 if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj) } 5140 5141 if (obj.canceled) { return null } 5142 return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin} 5143 } 5144 5145 // Apply a change to a document, and add it to the document's 5146 // history, and propagating it to all linked documents. 5147 function makeChange(doc, change, ignoreReadOnly) { 5148 if (doc.cm) { 5149 if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) } 5150 if (doc.cm.state.suppressEdits) { return } 5151 } 5152 5153 if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { 5154 change = filterChange(doc, change, true) 5155 if (!change) { return } 5156 } 5157 5158 // Possibly split or suppress the update based on the presence 5159 // of read-only spans in its range. 5160 var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to) 5161 if (split) { 5162 for (var i = split.length - 1; i >= 0; --i) 5163 { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}) } 5164 } else { 5165 makeChangeInner(doc, change) 5166 } 5167 } 5168 5169 function makeChangeInner(doc, change) { 5170 if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return } 5171 var selAfter = computeSelAfterChange(doc, change) 5172 addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN) 5173 5174 makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)) 5175 var rebased = [] 5176 5177 linkedDocs(doc, function (doc, sharedHist) { 5178 if (!sharedHist && indexOf(rebased, doc.history) == -1) { 5179 rebaseHist(doc.history, change) 5180 rebased.push(doc.history) 5181 } 5182 makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)) 5183 }) 5184 } 5185 5186 // Revert a change stored in a document's history. 5187 function makeChangeFromHistory(doc, type, allowSelectionOnly) { 5188 if (doc.cm && doc.cm.state.suppressEdits && !allowSelectionOnly) { return } 5189 5190 var hist = doc.history, event, selAfter = doc.sel 5191 var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done 5192 5193 // Verify that there is a useable event (so that ctrl-z won't 5194 // needlessly clear selection events) 5195 var i = 0 5196 for (; i < source.length; i++) { 5197 event = source[i] 5198 if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) 5199 { break } 5200 } 5201 if (i == source.length) { return } 5202 hist.lastOrigin = hist.lastSelOrigin = null 5203 5204 for (;;) { 5205 event = source.pop() 5206 if (event.ranges) { 5207 pushSelectionToHistory(event, dest) 5208 if (allowSelectionOnly && !event.equals(doc.sel)) { 5209 setSelection(doc, event, {clearRedo: false}) 5210 return 5211 } 5212 selAfter = event 5213 } 5214 else { break } 5215 } 5216 5217 // Build up a reverse change object to add to the opposite history 5218 // stack (redo when undoing, and vice versa). 5219 var antiChanges = [] 5220 pushSelectionToHistory(selAfter, dest) 5221 dest.push({changes: antiChanges, generation: hist.generation}) 5222 hist.generation = event.generation || ++hist.maxGeneration 5223 5224 var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange") 5225 5226 var loop = function ( i ) { 5227 var change = event.changes[i] 5228 change.origin = type 5229 if (filter && !filterChange(doc, change, false)) { 5230 source.length = 0 5231 return {} 5232 } 5233 5234 antiChanges.push(historyChangeFromChange(doc, change)) 5235 5236 var after = i ? computeSelAfterChange(doc, change) : lst(source) 5237 makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)) 5238 if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) } 5239 var rebased = [] 5240 5241 // Propagate to the linked documents 5242 linkedDocs(doc, function (doc, sharedHist) { 5243 if (!sharedHist && indexOf(rebased, doc.history) == -1) { 5244 rebaseHist(doc.history, change) 5245 rebased.push(doc.history) 5246 } 5247 makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)) 5248 }) 5249 }; 5250 5251 for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) { 5252 var returned = loop( i$1 ); 5253 5254 if ( returned ) return returned.v; 5255 } 5256 } 5257 5258 // Sub-views need their line numbers shifted when text is added 5259 // above or below them in the parent document. 5260 function shiftDoc(doc, distance) { 5261 if (distance == 0) { return } 5262 doc.first += distance 5263 doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range( 5264 Pos(range.anchor.line + distance, range.anchor.ch), 5265 Pos(range.head.line + distance, range.head.ch) 5266 ); }), doc.sel.primIndex) 5267 if (doc.cm) { 5268 regChange(doc.cm, doc.first, doc.first - distance, distance) 5269 for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) 5270 { regLineChange(doc.cm, l, "gutter") } 5271 } 5272 } 5273 5274 // More lower-level change function, handling only a single document 5275 // (not linked ones). 5276 function makeChangeSingleDoc(doc, change, selAfter, spans) { 5277 if (doc.cm && !doc.cm.curOp) 5278 { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) } 5279 5280 if (change.to.line < doc.first) { 5281 shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)) 5282 return 5283 } 5284 if (change.from.line > doc.lastLine()) { return } 5285 5286 // Clip the change to the size of this doc 5287 if (change.from.line < doc.first) { 5288 var shift = change.text.length - 1 - (doc.first - change.from.line) 5289 shiftDoc(doc, shift) 5290 change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), 5291 text: [lst(change.text)], origin: change.origin} 5292 } 5293 var last = doc.lastLine() 5294 if (change.to.line > last) { 5295 change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), 5296 text: [change.text[0]], origin: change.origin} 5297 } 5298 5299 change.removed = getBetween(doc, change.from, change.to) 5300 5301 if (!selAfter) { selAfter = computeSelAfterChange(doc, change) } 5302 if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) } 5303 else { updateDoc(doc, change, spans) } 5304 setSelectionNoUndo(doc, selAfter, sel_dontScroll) 5305 } 5306 5307 // Handle the interaction of a change to a document with the editor 5308 // that this document is part of. 5309 function makeChangeSingleDocInEditor(cm, change, spans) { 5310 var doc = cm.doc, display = cm.display, from = change.from, to = change.to 5311 5312 var recomputeMaxLength = false, checkWidthStart = from.line 5313 if (!cm.options.lineWrapping) { 5314 checkWidthStart = lineNo(visualLine(getLine(doc, from.line))) 5315 doc.iter(checkWidthStart, to.line + 1, function (line) { 5316 if (line == display.maxLine) { 5317 recomputeMaxLength = true 5318 return true 5319 } 5320 }) 5321 } 5322 5323 if (doc.sel.contains(change.from, change.to) > -1) 5324 { signalCursorActivity(cm) } 5325 5326 updateDoc(doc, change, spans, estimateHeight(cm)) 5327 5328 if (!cm.options.lineWrapping) { 5329 doc.iter(checkWidthStart, from.line + change.text.length, function (line) { 5330 var len = lineLength(line) 5331 if (len > display.maxLineLength) { 5332 display.maxLine = line 5333 display.maxLineLength = len 5334 display.maxLineChanged = true 5335 recomputeMaxLength = false 5336 } 5337 }) 5338 if (recomputeMaxLength) { cm.curOp.updateMaxLine = true } 5339 } 5340 5341 retreatFrontier(doc, from.line) 5342 startWorker(cm, 400) 5343 5344 var lendiff = change.text.length - (to.line - from.line) - 1 5345 // Remember that these lines changed, for updating the display 5346 if (change.full) 5347 { regChange(cm) } 5348 else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) 5349 { regLineChange(cm, from.line, "text") } 5350 else 5351 { regChange(cm, from.line, to.line + 1, lendiff) } 5352 5353 var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change") 5354 if (changeHandler || changesHandler) { 5355 var obj = { 5356 from: from, to: to, 5357 text: change.text, 5358 removed: change.removed, 5359 origin: change.origin 5360 } 5361 if (changeHandler) { signalLater(cm, "change", cm, obj) } 5362 if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj) } 5363 } 5364 cm.display.selForContextMenu = null 5365 } 5366 5367 function replaceRange(doc, code, from, to, origin) { 5368 if (!to) { to = from } 5369 if (cmp(to, from) < 0) { var assign; 5370 (assign = [to, from], from = assign[0], to = assign[1], assign) } 5371 if (typeof code == "string") { code = doc.splitLines(code) } 5372 makeChange(doc, {from: from, to: to, text: code, origin: origin}) 5373 } 5374 5375 // Rebasing/resetting history to deal with externally-sourced changes 5376 5377 function rebaseHistSelSingle(pos, from, to, diff) { 5378 if (to < pos.line) { 5379 pos.line += diff 5380 } else if (from < pos.line) { 5381 pos.line = from 5382 pos.ch = 0 5383 } 5384 } 5385 5386 // Tries to rebase an array of history events given a change in the 5387 // document. If the change touches the same lines as the event, the 5388 // event, and everything 'behind' it, is discarded. If the change is 5389 // before the event, the event's positions are updated. Uses a 5390 // copy-on-write scheme for the positions, to avoid having to 5391 // reallocate them all on every rebase, but also avoid problems with 5392 // shared position objects being unsafely updated. 5393 function rebaseHistArray(array, from, to, diff) { 5394 for (var i = 0; i < array.length; ++i) { 5395 var sub = array[i], ok = true 5396 if (sub.ranges) { 5397 if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true } 5398 for (var j = 0; j < sub.ranges.length; j++) { 5399 rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff) 5400 rebaseHistSelSingle(sub.ranges[j].head, from, to, diff) 5401 } 5402 continue 5403 } 5404 for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) { 5405 var cur = sub.changes[j$1] 5406 if (to < cur.from.line) { 5407 cur.from = Pos(cur.from.line + diff, cur.from.ch) 5408 cur.to = Pos(cur.to.line + diff, cur.to.ch) 5409 } else if (from <= cur.to.line) { 5410 ok = false 5411 break 5412 } 5413 } 5414 if (!ok) { 5415 array.splice(0, i + 1) 5416 i = 0 5417 } 5418 } 5419 } 5420 5421 function rebaseHist(hist, change) { 5422 var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1 5423 rebaseHistArray(hist.done, from, to, diff) 5424 rebaseHistArray(hist.undone, from, to, diff) 5425 } 5426 5427 // Utility for applying a change to a line by handle or number, 5428 // returning the number and optionally registering the line as 5429 // changed. 5430 function changeLine(doc, handle, changeType, op) { 5431 var no = handle, line = handle 5432 if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)) } 5433 else { no = lineNo(handle) } 5434 if (no == null) { return null } 5435 if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) } 5436 return line 5437 } 5438 5439 // The document is represented as a BTree consisting of leaves, with 5440 // chunk of lines in them, and branches, with up to ten leaves or 5441 // other branch nodes below them. The top node is always a branch 5442 // node, and is the document object itself (meaning it has 5443 // additional methods and properties). 5444 // 5445 // All nodes have parent links. The tree is used both to go from 5446 // line numbers to line objects, and to go from objects to numbers. 5447 // It also indexes by height, and is used to convert between height 5448 // and line object, and to find the total height of the document. 5449 // 5450 // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html 5451 5452 function LeafChunk(lines) { 5453 var this$1 = this; 5454 5455 this.lines = lines 5456 this.parent = null 5457 var height = 0 5458 for (var i = 0; i < lines.length; ++i) { 5459 lines[i].parent = this$1 5460 height += lines[i].height 5461 } 5462 this.height = height 5463 } 5464 5465 LeafChunk.prototype = { 5466 chunkSize: function chunkSize() { return this.lines.length }, 5467 5468 // Remove the n lines at offset 'at'. 5469 removeInner: function removeInner(at, n) { 5470 var this$1 = this; 5471 5472 for (var i = at, e = at + n; i < e; ++i) { 5473 var line = this$1.lines[i] 5474 this$1.height -= line.height 5475 cleanUpLine(line) 5476 signalLater(line, "delete") 5477 } 5478 this.lines.splice(at, n) 5479 }, 5480 5481 // Helper used to collapse a small branch into a single leaf. 5482 collapse: function collapse(lines) { 5483 lines.push.apply(lines, this.lines) 5484 }, 5485 5486 // Insert the given array of lines at offset 'at', count them as 5487 // having the given height. 5488 insertInner: function insertInner(at, lines, height) { 5489 var this$1 = this; 5490 5491 this.height += height 5492 this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)) 5493 for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 } 5494 }, 5495 5496 // Used to iterate over a part of the tree. 5497 iterN: function iterN(at, n, op) { 5498 var this$1 = this; 5499 5500 for (var e = at + n; at < e; ++at) 5501 { if (op(this$1.lines[at])) { return true } } 5502 } 5503 } 5504 5505 function BranchChunk(children) { 5506 var this$1 = this; 5507 5508 this.children = children 5509 var size = 0, height = 0 5510 for (var i = 0; i < children.length; ++i) { 5511 var ch = children[i] 5512 size += ch.chunkSize(); height += ch.height 5513 ch.parent = this$1 5514 } 5515 this.size = size 5516 this.height = height 5517 this.parent = null 5518 } 5519 5520 BranchChunk.prototype = { 5521 chunkSize: function chunkSize() { return this.size }, 5522 5523 removeInner: function removeInner(at, n) { 5524 var this$1 = this; 5525 5526 this.size -= n 5527 for (var i = 0; i < this.children.length; ++i) { 5528 var child = this$1.children[i], sz = child.chunkSize() 5529 if (at < sz) { 5530 var rm = Math.min(n, sz - at), oldHeight = child.height 5531 child.removeInner(at, rm) 5532 this$1.height -= oldHeight - child.height 5533 if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null } 5534 if ((n -= rm) == 0) { break } 5535 at = 0 5536 } else { at -= sz } 5537 } 5538 // If the result is smaller than 25 lines, ensure that it is a 5539 // single leaf node. 5540 if (this.size - n < 25 && 5541 (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { 5542 var lines = [] 5543 this.collapse(lines) 5544 this.children = [new LeafChunk(lines)] 5545 this.children[0].parent = this 5546 } 5547 }, 5548 5549 collapse: function collapse(lines) { 5550 var this$1 = this; 5551 5552 for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) } 5553 }, 5554 5555 insertInner: function insertInner(at, lines, height) { 5556 var this$1 = this; 5557 5558 this.size += lines.length 5559 this.height += height 5560 for (var i = 0; i < this.children.length; ++i) { 5561 var child = this$1.children[i], sz = child.chunkSize() 5562 if (at <= sz) { 5563 child.insertInner(at, lines, height) 5564 if (child.lines && child.lines.length > 50) { 5565 // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced. 5566 // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest. 5567 var remaining = child.lines.length % 25 + 25 5568 for (var pos = remaining; pos < child.lines.length;) { 5569 var leaf = new LeafChunk(child.lines.slice(pos, pos += 25)) 5570 child.height -= leaf.height 5571 this$1.children.splice(++i, 0, leaf) 5572 leaf.parent = this$1 5573 } 5574 child.lines = child.lines.slice(0, remaining) 5575 this$1.maybeSpill() 5576 } 5577 break 5578 } 5579 at -= sz 5580 } 5581 }, 5582 5583 // When a node has grown, check whether it should be split. 5584 maybeSpill: function maybeSpill() { 5585 if (this.children.length <= 10) { return } 5586 var me = this 5587 do { 5588 var spilled = me.children.splice(me.children.length - 5, 5) 5589 var sibling = new BranchChunk(spilled) 5590 if (!me.parent) { // Become the parent node 5591 var copy = new BranchChunk(me.children) 5592 copy.parent = me 5593 me.children = [copy, sibling] 5594 me = copy 5595 } else { 5596 me.size -= sibling.size 5597 me.height -= sibling.height 5598 var myIndex = indexOf(me.parent.children, me) 5599 me.parent.children.splice(myIndex + 1, 0, sibling) 5600 } 5601 sibling.parent = me.parent 5602 } while (me.children.length > 10) 5603 me.parent.maybeSpill() 5604 }, 5605 5606 iterN: function iterN(at, n, op) { 5607 var this$1 = this; 5608 5609 for (var i = 0; i < this.children.length; ++i) { 5610 var child = this$1.children[i], sz = child.chunkSize() 5611 if (at < sz) { 5612 var used = Math.min(n, sz - at) 5613 if (child.iterN(at, used, op)) { return true } 5614 if ((n -= used) == 0) { break } 5615 at = 0 5616 } else { at -= sz } 5617 } 5618 } 5619 } 5620 5621 // Line widgets are block elements displayed above or below a line. 5622 5623 var LineWidget = function(doc, node, options) { 5624 var this$1 = this; 5625 5626 if (options) { for (var opt in options) { if (options.hasOwnProperty(opt)) 5627 { this$1[opt] = options[opt] } } } 5628 this.doc = doc 5629 this.node = node 5630 }; 5631 5632 LineWidget.prototype.clear = function () { 5633 var this$1 = this; 5634 5635 var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line) 5636 if (no == null || !ws) { return } 5637 for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } } 5638 if (!ws.length) { line.widgets = null } 5639 var height = widgetHeight(this) 5640 updateLineHeight(line, Math.max(0, line.height - height)) 5641 if (cm) { 5642 runInOp(cm, function () { 5643 adjustScrollWhenAboveVisible(cm, line, -height) 5644 regLineChange(cm, no, "widget") 5645 }) 5646 signalLater(cm, "lineWidgetCleared", cm, this, no) 5647 } 5648 }; 5649 5650 LineWidget.prototype.changed = function () { 5651 var this$1 = this; 5652 5653 var oldH = this.height, cm = this.doc.cm, line = this.line 5654 this.height = null 5655 var diff = widgetHeight(this) - oldH 5656 if (!diff) { return } 5657 updateLineHeight(line, line.height + diff) 5658 if (cm) { 5659 runInOp(cm, function () { 5660 cm.curOp.forceUpdate = true 5661 adjustScrollWhenAboveVisible(cm, line, diff) 5662 signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line)) 5663 }) 5664 } 5665 }; 5666 eventMixin(LineWidget) 5667 5668 function adjustScrollWhenAboveVisible(cm, line, diff) { 5669 if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) 5670 { addToScrollTop(cm, diff) } 5671 } 5672 5673 function addLineWidget(doc, handle, node, options) { 5674 var widget = new LineWidget(doc, node, options) 5675 var cm = doc.cm 5676 if (cm && widget.noHScroll) { cm.display.alignWidgets = true } 5677 changeLine(doc, handle, "widget", function (line) { 5678 var widgets = line.widgets || (line.widgets = []) 5679 if (widget.insertAt == null) { widgets.push(widget) } 5680 else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) } 5681 widget.line = line 5682 if (cm && !lineIsHidden(doc, line)) { 5683 var aboveVisible = heightAtLine(line) < doc.scrollTop 5684 updateLineHeight(line, line.height + widgetHeight(widget)) 5685 if (aboveVisible) { addToScrollTop(cm, widget.height) } 5686 cm.curOp.forceUpdate = true 5687 } 5688 return true 5689 }) 5690 signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)) 5691 return widget 5692 } 5693 5694 // TEXTMARKERS 5695 5696 // Created with markText and setBookmark methods. A TextMarker is a 5697 // handle that can be used to clear or find a marked position in the 5698 // document. Line objects hold arrays (markedSpans) containing 5699 // {from, to, marker} object pointing to such marker objects, and 5700 // indicating that such a marker is present on that line. Multiple 5701 // lines may point to the same marker when it spans across lines. 5702 // The spans will have null for their from/to properties when the 5703 // marker continues beyond the start/end of the line. Markers have 5704 // links back to the lines they currently touch. 5705 5706 // Collapsed markers have unique ids, in order to be able to order 5707 // them, which is needed for uniquely determining an outer marker 5708 // when they overlap (they may nest, but not partially overlap). 5709 var nextMarkerId = 0 5710 5711 var TextMarker = function(doc, type) { 5712 this.lines = [] 5713 this.type = type 5714 this.doc = doc 5715 this.id = ++nextMarkerId 5716 }; 5717 5718 // Clear the marker. 5719 TextMarker.prototype.clear = function () { 5720 var this$1 = this; 5721 5722 if (this.explicitlyCleared) { return } 5723 var cm = this.doc.cm, withOp = cm && !cm.curOp 5724 if (withOp) { startOperation(cm) } 5725 if (hasHandler(this, "clear")) { 5726 var found = this.find() 5727 if (found) { signalLater(this, "clear", found.from, found.to) } 5728 } 5729 var min = null, max = null 5730 for (var i = 0; i < this.lines.length; ++i) { 5731 var line = this$1.lines[i] 5732 var span = getMarkedSpanFor(line.markedSpans, this$1) 5733 if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text") } 5734 else if (cm) { 5735 if (span.to != null) { max = lineNo(line) } 5736 if (span.from != null) { min = lineNo(line) } 5737 } 5738 line.markedSpans = removeMarkedSpan(line.markedSpans, span) 5739 if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm) 5740 { updateLineHeight(line, textHeight(cm.display)) } 5741 } 5742 if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) { 5743 var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual) 5744 if (len > cm.display.maxLineLength) { 5745 cm.display.maxLine = visual 5746 cm.display.maxLineLength = len 5747 cm.display.maxLineChanged = true 5748 } 5749 } } 5750 5751 if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) } 5752 this.lines.length = 0 5753 this.explicitlyCleared = true 5754 if (this.atomic && this.doc.cantEdit) { 5755 this.doc.cantEdit = false 5756 if (cm) { reCheckSelection(cm.doc) } 5757 } 5758 if (cm) { signalLater(cm, "markerCleared", cm, this, min, max) } 5759 if (withOp) { endOperation(cm) } 5760 if (this.parent) { this.parent.clear() } 5761 }; 5762 5763 // Find the position of the marker in the document. Returns a {from, 5764 // to} object by default. Side can be passed to get a specific side 5765 // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the 5766 // Pos objects returned contain a line object, rather than a line 5767 // number (used to prevent looking up the same line twice). 5768 TextMarker.prototype.find = function (side, lineObj) { 5769 var this$1 = this; 5770 5771 if (side == null && this.type == "bookmark") { side = 1 } 5772 var from, to 5773 for (var i = 0; i < this.lines.length; ++i) { 5774 var line = this$1.lines[i] 5775 var span = getMarkedSpanFor(line.markedSpans, this$1) 5776 if (span.from != null) { 5777 from = Pos(lineObj ? line : lineNo(line), span.from) 5778 if (side == -1) { return from } 5779 } 5780 if (span.to != null) { 5781 to = Pos(lineObj ? line : lineNo(line), span.to) 5782 if (side == 1) { return to } 5783 } 5784 } 5785 return from && {from: from, to: to} 5786 }; 5787 5788 // Signals that the marker's widget changed, and surrounding layout 5789 // should be recomputed. 5790 TextMarker.prototype.changed = function () { 5791 var this$1 = this; 5792 5793 var pos = this.find(-1, true), widget = this, cm = this.doc.cm 5794 if (!pos || !cm) { return } 5795 runInOp(cm, function () { 5796 var line = pos.line, lineN = lineNo(pos.line) 5797 var view = findViewForLine(cm, lineN) 5798 if (view) { 5799 clearLineMeasurementCacheFor(view) 5800 cm.curOp.selectionChanged = cm.curOp.forceUpdate = true 5801 } 5802 cm.curOp.updateMaxLine = true 5803 if (!lineIsHidden(widget.doc, line) && widget.height != null) { 5804 var oldHeight = widget.height 5805 widget.height = null 5806 var dHeight = widgetHeight(widget) - oldHeight 5807 if (dHeight) 5808 { updateLineHeight(line, line.height + dHeight) } 5809 } 5810 signalLater(cm, "markerChanged", cm, this$1) 5811 }) 5812 }; 5813 5814 TextMarker.prototype.attachLine = function (line) { 5815 if (!this.lines.length && this.doc.cm) { 5816 var op = this.doc.cm.curOp 5817 if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) 5818 { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) } 5819 } 5820 this.lines.push(line) 5821 }; 5822 5823 TextMarker.prototype.detachLine = function (line) { 5824 this.lines.splice(indexOf(this.lines, line), 1) 5825 if (!this.lines.length && this.doc.cm) { 5826 var op = this.doc.cm.curOp 5827 ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this) 5828 } 5829 }; 5830 eventMixin(TextMarker) 5831 5832 // Create a marker, wire it up to the right lines, and 5833 function markText(doc, from, to, options, type) { 5834 // Shared markers (across linked documents) are handled separately 5835 // (markTextShared will call out to this again, once per 5836 // document). 5837 if (options && options.shared) { return markTextShared(doc, from, to, options, type) } 5838 // Ensure we are in an operation. 5839 if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) } 5840 5841 var marker = new TextMarker(doc, type), diff = cmp(from, to) 5842 if (options) { copyObj(options, marker, false) } 5843 // Don't connect empty markers unless clearWhenEmpty is false 5844 if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) 5845 { return marker } 5846 if (marker.replacedWith) { 5847 // Showing up as a widget implies collapsed (widget replaces text) 5848 marker.collapsed = true 5849 marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget") 5850 if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true") } 5851 if (options.insertLeft) { marker.widgetNode.insertLeft = true } 5852 } 5853 if (marker.collapsed) { 5854 if (conflictingCollapsedRange(doc, from.line, from, to, marker) || 5855 from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) 5856 { throw new Error("Inserting collapsed marker partially overlapping an existing one") } 5857 seeCollapsedSpans() 5858 } 5859 5860 if (marker.addToHistory) 5861 { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) } 5862 5863 var curLine = from.line, cm = doc.cm, updateMaxLine 5864 doc.iter(curLine, to.line + 1, function (line) { 5865 if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) 5866 { updateMaxLine = true } 5867 if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) } 5868 addMarkedSpan(line, new MarkedSpan(marker, 5869 curLine == from.line ? from.ch : null, 5870 curLine == to.line ? to.ch : null)) 5871 ++curLine 5872 }) 5873 // lineIsHidden depends on the presence of the spans, so needs a second pass 5874 if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) { 5875 if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) } 5876 }) } 5877 5878 if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }) } 5879 5880 if (marker.readOnly) { 5881 seeReadOnlySpans() 5882 if (doc.history.done.length || doc.history.undone.length) 5883 { doc.clearHistory() } 5884 } 5885 if (marker.collapsed) { 5886 marker.id = ++nextMarkerId 5887 marker.atomic = true 5888 } 5889 if (cm) { 5890 // Sync editor state 5891 if (updateMaxLine) { cm.curOp.updateMaxLine = true } 5892 if (marker.collapsed) 5893 { regChange(cm, from.line, to.line + 1) } 5894 else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css) 5895 { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text") } } 5896 if (marker.atomic) { reCheckSelection(cm.doc) } 5897 signalLater(cm, "markerAdded", cm, marker) 5898 } 5899 return marker 5900 } 5901 5902 // SHARED TEXTMARKERS 5903 5904 // A shared marker spans multiple linked documents. It is 5905 // implemented as a meta-marker-object controlling multiple normal 5906 // markers. 5907 var SharedTextMarker = function(markers, primary) { 5908 var this$1 = this; 5909 5910 this.markers = markers 5911 this.primary = primary 5912 for (var i = 0; i < markers.length; ++i) 5913 { markers[i].parent = this$1 } 5914 }; 5915 5916 SharedTextMarker.prototype.clear = function () { 5917 var this$1 = this; 5918 5919 if (this.explicitlyCleared) { return } 5920 this.explicitlyCleared = true 5921 for (var i = 0; i < this.markers.length; ++i) 5922 { this$1.markers[i].clear() } 5923 signalLater(this, "clear") 5924 }; 5925 5926 SharedTextMarker.prototype.find = function (side, lineObj) { 5927 return this.primary.find(side, lineObj) 5928 }; 5929 eventMixin(SharedTextMarker) 5930 5931 function markTextShared(doc, from, to, options, type) { 5932 options = copyObj(options) 5933 options.shared = false 5934 var markers = [markText(doc, from, to, options, type)], primary = markers[0] 5935 var widget = options.widgetNode 5936 linkedDocs(doc, function (doc) { 5937 if (widget) { options.widgetNode = widget.cloneNode(true) } 5938 markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)) 5939 for (var i = 0; i < doc.linked.length; ++i) 5940 { if (doc.linked[i].isParent) { return } } 5941 primary = lst(markers) 5942 }) 5943 return new SharedTextMarker(markers, primary) 5944 } 5945 5946 function findSharedMarkers(doc) { 5947 return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; }) 5948 } 5949 5950 function copySharedMarkers(doc, markers) { 5951 for (var i = 0; i < markers.length; i++) { 5952 var marker = markers[i], pos = marker.find() 5953 var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to) 5954 if (cmp(mFrom, mTo)) { 5955 var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type) 5956 marker.markers.push(subMark) 5957 subMark.parent = marker 5958 } 5959 } 5960 } 5961 5962 function detachSharedMarkers(markers) { 5963 var loop = function ( i ) { 5964 var marker = markers[i], linked = [marker.primary.doc] 5965 linkedDocs(marker.primary.doc, function (d) { return linked.push(d); }) 5966 for (var j = 0; j < marker.markers.length; j++) { 5967 var subMarker = marker.markers[j] 5968 if (indexOf(linked, subMarker.doc) == -1) { 5969 subMarker.parent = null 5970 marker.markers.splice(j--, 1) 5971 } 5972 } 5973 }; 5974 5975 for (var i = 0; i < markers.length; i++) loop( i ); 5976 } 5977 5978 var nextDocId = 0 5979 var Doc = function(text, mode, firstLine, lineSep, direction) { 5980 if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) } 5981 if (firstLine == null) { firstLine = 0 } 5982 5983 BranchChunk.call(this, [new LeafChunk([new Line("", null)])]) 5984 this.first = firstLine 5985 this.scrollTop = this.scrollLeft = 0 5986 this.cantEdit = false 5987 this.cleanGeneration = 1 5988 this.modeFrontier = this.highlightFrontier = firstLine 5989 var start = Pos(firstLine, 0) 5990 this.sel = simpleSelection(start) 5991 this.history = new History(null) 5992 this.id = ++nextDocId 5993 this.modeOption = mode 5994 this.lineSep = lineSep 5995 this.direction = (direction == "rtl") ? "rtl" : "ltr" 5996 this.extend = false 5997 5998 if (typeof text == "string") { text = this.splitLines(text) } 5999 updateDoc(this, {from: start, to: start, text: text}) 6000 setSelection(this, simpleSelection(start), sel_dontScroll) 6001 } 6002 6003 Doc.prototype = createObj(BranchChunk.prototype, { 6004 constructor: Doc, 6005 // Iterate over the document. Supports two forms -- with only one 6006 // argument, it calls that for each line in the document. With 6007 // three, it iterates over the range given by the first two (with 6008 // the second being non-inclusive). 6009 iter: function(from, to, op) { 6010 if (op) { this.iterN(from - this.first, to - from, op) } 6011 else { this.iterN(this.first, this.first + this.size, from) } 6012 }, 6013 6014 // Non-public interface for adding and removing lines. 6015 insert: function(at, lines) { 6016 var height = 0 6017 for (var i = 0; i < lines.length; ++i) { height += lines[i].height } 6018 this.insertInner(at - this.first, lines, height) 6019 }, 6020 remove: function(at, n) { this.removeInner(at - this.first, n) }, 6021 6022 // From here, the methods are part of the public interface. Most 6023 // are also available from CodeMirror (editor) instances. 6024 6025 getValue: function(lineSep) { 6026 var lines = getLines(this, this.first, this.first + this.size) 6027 if (lineSep === false) { return lines } 6028 return lines.join(lineSep || this.lineSeparator()) 6029 }, 6030 setValue: docMethodOp(function(code) { 6031 var top = Pos(this.first, 0), last = this.first + this.size - 1 6032 makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), 6033 text: this.splitLines(code), origin: "setValue", full: true}, true) 6034 if (this.cm) { scrollToCoords(this.cm, 0, 0) } 6035 setSelection(this, simpleSelection(top), sel_dontScroll) 6036 }), 6037 replaceRange: function(code, from, to, origin) { 6038 from = clipPos(this, from) 6039 to = to ? clipPos(this, to) : from 6040 replaceRange(this, code, from, to, origin) 6041 }, 6042 getRange: function(from, to, lineSep) { 6043 var lines = getBetween(this, clipPos(this, from), clipPos(this, to)) 6044 if (lineSep === false) { return lines } 6045 return lines.join(lineSep || this.lineSeparator()) 6046 }, 6047 6048 getLine: function(line) {var l = this.getLineHandle(line); return l && l.text}, 6049 6050 getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }}, 6051 getLineNumber: function(line) {return lineNo(line)}, 6052 6053 getLineHandleVisualStart: function(line) { 6054 if (typeof line == "number") { line = getLine(this, line) } 6055 return visualLine(line) 6056 }, 6057 6058 lineCount: function() {return this.size}, 6059 firstLine: function() {return this.first}, 6060 lastLine: function() {return this.first + this.size - 1}, 6061 6062 clipPos: function(pos) {return clipPos(this, pos)}, 6063 6064 getCursor: function(start) { 6065 var range = this.sel.primary(), pos 6066 if (start == null || start == "head") { pos = range.head } 6067 else if (start == "anchor") { pos = range.anchor } 6068 else if (start == "end" || start == "to" || start === false) { pos = range.to() } 6069 else { pos = range.from() } 6070 return pos 6071 }, 6072 listSelections: function() { return this.sel.ranges }, 6073 somethingSelected: function() {return this.sel.somethingSelected()}, 6074 6075 setCursor: docMethodOp(function(line, ch, options) { 6076 setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options) 6077 }), 6078 setSelection: docMethodOp(function(anchor, head, options) { 6079 setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options) 6080 }), 6081 extendSelection: docMethodOp(function(head, other, options) { 6082 extendSelection(this, clipPos(this, head), other && clipPos(this, other), options) 6083 }), 6084 extendSelections: docMethodOp(function(heads, options) { 6085 extendSelections(this, clipPosArray(this, heads), options) 6086 }), 6087 extendSelectionsBy: docMethodOp(function(f, options) { 6088 var heads = map(this.sel.ranges, f) 6089 extendSelections(this, clipPosArray(this, heads), options) 6090 }), 6091 setSelections: docMethodOp(function(ranges, primary, options) { 6092 var this$1 = this; 6093 6094 if (!ranges.length) { return } 6095 var out = [] 6096 for (var i = 0; i < ranges.length; i++) 6097 { out[i] = new Range(clipPos(this$1, ranges[i].anchor), 6098 clipPos(this$1, ranges[i].head)) } 6099 if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) } 6100 setSelection(this, normalizeSelection(out, primary), options) 6101 }), 6102 addSelection: docMethodOp(function(anchor, head, options) { 6103 var ranges = this.sel.ranges.slice(0) 6104 ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))) 6105 setSelection(this, normalizeSelection(ranges, ranges.length - 1), options) 6106 }), 6107 6108 getSelection: function(lineSep) { 6109 var this$1 = this; 6110 6111 var ranges = this.sel.ranges, lines 6112 for (var i = 0; i < ranges.length; i++) { 6113 var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) 6114 lines = lines ? lines.concat(sel) : sel 6115 } 6116 if (lineSep === false) { return lines } 6117 else { return lines.join(lineSep || this.lineSeparator()) } 6118 }, 6119 getSelections: function(lineSep) { 6120 var this$1 = this; 6121 6122 var parts = [], ranges = this.sel.ranges 6123 for (var i = 0; i < ranges.length; i++) { 6124 var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) 6125 if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()) } 6126 parts[i] = sel 6127 } 6128 return parts 6129 }, 6130 replaceSelection: function(code, collapse, origin) { 6131 var dup = [] 6132 for (var i = 0; i < this.sel.ranges.length; i++) 6133 { dup[i] = code } 6134 this.replaceSelections(dup, collapse, origin || "+input") 6135 }, 6136 replaceSelections: docMethodOp(function(code, collapse, origin) { 6137 var this$1 = this; 6138 6139 var changes = [], sel = this.sel 6140 for (var i = 0; i < sel.ranges.length; i++) { 6141 var range = sel.ranges[i] 6142 changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin} 6143 } 6144 var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse) 6145 for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) 6146 { makeChange(this$1, changes[i$1]) } 6147 if (newSel) { setSelectionReplaceHistory(this, newSel) } 6148 else if (this.cm) { ensureCursorVisible(this.cm) } 6149 }), 6150 undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}), 6151 redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}), 6152 undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}), 6153 redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}), 6154 6155 setExtending: function(val) {this.extend = val}, 6156 getExtending: function() {return this.extend}, 6157 6158 historySize: function() { 6159 var hist = this.history, done = 0, undone = 0 6160 for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } } 6161 for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } } 6162 return {undo: done, redo: undone} 6163 }, 6164 clearHistory: function() {this.history = new History(this.history.maxGeneration)}, 6165 6166 markClean: function() { 6167 this.cleanGeneration = this.changeGeneration(true) 6168 }, 6169 changeGeneration: function(forceSplit) { 6170 if (forceSplit) 6171 { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null } 6172 return this.history.generation 6173 }, 6174 isClean: function (gen) { 6175 return this.history.generation == (gen || this.cleanGeneration) 6176 }, 6177 6178 getHistory: function() { 6179 return {done: copyHistoryArray(this.history.done), 6180 undone: copyHistoryArray(this.history.undone)} 6181 }, 6182 setHistory: function(histData) { 6183 var hist = this.history = new History(this.history.maxGeneration) 6184 hist.done = copyHistoryArray(histData.done.slice(0), null, true) 6185 hist.undone = copyHistoryArray(histData.undone.slice(0), null, true) 6186 }, 6187 6188 setGutterMarker: docMethodOp(function(line, gutterID, value) { 6189 return changeLine(this, line, "gutter", function (line) { 6190 var markers = line.gutterMarkers || (line.gutterMarkers = {}) 6191 markers[gutterID] = value 6192 if (!value && isEmpty(markers)) { line.gutterMarkers = null } 6193 return true 6194 }) 6195 }), 6196 6197 clearGutter: docMethodOp(function(gutterID) { 6198 var this$1 = this; 6199 6200 this.iter(function (line) { 6201 if (line.gutterMarkers && line.gutterMarkers[gutterID]) { 6202 changeLine(this$1, line, "gutter", function () { 6203 line.gutterMarkers[gutterID] = null 6204 if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null } 6205 return true 6206 }) 6207 } 6208 }) 6209 }), 6210 6211 lineInfo: function(line) { 6212 var n 6213 if (typeof line == "number") { 6214 if (!isLine(this, line)) { return null } 6215 n = line 6216 line = getLine(this, line) 6217 if (!line) { return null } 6218 } else { 6219 n = lineNo(line) 6220 if (n == null) { return null } 6221 } 6222 return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, 6223 textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, 6224 widgets: line.widgets} 6225 }, 6226 6227 addLineClass: docMethodOp(function(handle, where, cls) { 6228 return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { 6229 var prop = where == "text" ? "textClass" 6230 : where == "background" ? "bgClass" 6231 : where == "gutter" ? "gutterClass" : "wrapClass" 6232 if (!line[prop]) { line[prop] = cls } 6233 else if (classTest(cls).test(line[prop])) { return false } 6234 else { line[prop] += " " + cls } 6235 return true 6236 }) 6237 }), 6238 removeLineClass: docMethodOp(function(handle, where, cls) { 6239 return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { 6240 var prop = where == "text" ? "textClass" 6241 : where == "background" ? "bgClass" 6242 : where == "gutter" ? "gutterClass" : "wrapClass" 6243 var cur = line[prop] 6244 if (!cur) { return false } 6245 else if (cls == null) { line[prop] = null } 6246 else { 6247 var found = cur.match(classTest(cls)) 6248 if (!found) { return false } 6249 var end = found.index + found[0].length 6250 line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null 6251 } 6252 return true 6253 }) 6254 }), 6255 6256 addLineWidget: docMethodOp(function(handle, node, options) { 6257 return addLineWidget(this, handle, node, options) 6258 }), 6259 removeLineWidget: function(widget) { widget.clear() }, 6260 6261 markText: function(from, to, options) { 6262 return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range") 6263 }, 6264 setBookmark: function(pos, options) { 6265 var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), 6266 insertLeft: options && options.insertLeft, 6267 clearWhenEmpty: false, shared: options && options.shared, 6268 handleMouseEvents: options && options.handleMouseEvents} 6269 pos = clipPos(this, pos) 6270 return markText(this, pos, pos, realOpts, "bookmark") 6271 }, 6272 findMarksAt: function(pos) { 6273 pos = clipPos(this, pos) 6274 var markers = [], spans = getLine(this, pos.line).markedSpans 6275 if (spans) { for (var i = 0; i < spans.length; ++i) { 6276 var span = spans[i] 6277 if ((span.from == null || span.from <= pos.ch) && 6278 (span.to == null || span.to >= pos.ch)) 6279 { markers.push(span.marker.parent || span.marker) } 6280 } } 6281 return markers 6282 }, 6283 findMarks: function(from, to, filter) { 6284 from = clipPos(this, from); to = clipPos(this, to) 6285 var found = [], lineNo = from.line 6286 this.iter(from.line, to.line + 1, function (line) { 6287 var spans = line.markedSpans 6288 if (spans) { for (var i = 0; i < spans.length; i++) { 6289 var span = spans[i] 6290 if (!(span.to != null && lineNo == from.line && from.ch >= span.to || 6291 span.from == null && lineNo != from.line || 6292 span.from != null && lineNo == to.line && span.from >= to.ch) && 6293 (!filter || filter(span.marker))) 6294 { found.push(span.marker.parent || span.marker) } 6295 } } 6296 ++lineNo 6297 }) 6298 return found 6299 }, 6300 getAllMarks: function() { 6301 var markers = [] 6302 this.iter(function (line) { 6303 var sps = line.markedSpans 6304 if (sps) { for (var i = 0; i < sps.length; ++i) 6305 { if (sps[i].from != null) { markers.push(sps[i].marker) } } } 6306 }) 6307 return markers 6308 }, 6309 6310 posFromIndex: function(off) { 6311 var ch, lineNo = this.first, sepSize = this.lineSeparator().length 6312 this.iter(function (line) { 6313 var sz = line.text.length + sepSize 6314 if (sz > off) { ch = off; return true } 6315 off -= sz 6316 ++lineNo 6317 }) 6318 return clipPos(this, Pos(lineNo, ch)) 6319 }, 6320 indexFromPos: function (coords) { 6321 coords = clipPos(this, coords) 6322 var index = coords.ch 6323 if (coords.line < this.first || coords.ch < 0) { return 0 } 6324 var sepSize = this.lineSeparator().length 6325 this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value 6326 index += line.text.length + sepSize 6327 }) 6328 return index 6329 }, 6330 6331 copy: function(copyHistory) { 6332 var doc = new Doc(getLines(this, this.first, this.first + this.size), 6333 this.modeOption, this.first, this.lineSep, this.direction) 6334 doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft 6335 doc.sel = this.sel 6336 doc.extend = false 6337 if (copyHistory) { 6338 doc.history.undoDepth = this.history.undoDepth 6339 doc.setHistory(this.getHistory()) 6340 } 6341 return doc 6342 }, 6343 6344 linkedDoc: function(options) { 6345 if (!options) { options = {} } 6346 var from = this.first, to = this.first + this.size 6347 if (options.from != null && options.from > from) { from = options.from } 6348 if (options.to != null && options.to < to) { to = options.to } 6349 var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction) 6350 if (options.sharedHist) { copy.history = this.history 6351 ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}) 6352 copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}] 6353 copySharedMarkers(copy, findSharedMarkers(this)) 6354 return copy 6355 }, 6356 unlinkDoc: function(other) { 6357 var this$1 = this; 6358 6359 if (other instanceof CodeMirror) { other = other.doc } 6360 if (this.linked) { for (var i = 0; i < this.linked.length; ++i) { 6361 var link = this$1.linked[i] 6362 if (link.doc != other) { continue } 6363 this$1.linked.splice(i, 1) 6364 other.unlinkDoc(this$1) 6365 detachSharedMarkers(findSharedMarkers(this$1)) 6366 break 6367 } } 6368 // If the histories were shared, split them again 6369 if (other.history == this.history) { 6370 var splitIds = [other.id] 6371 linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true) 6372 other.history = new History(null) 6373 other.history.done = copyHistoryArray(this.history.done, splitIds) 6374 other.history.undone = copyHistoryArray(this.history.undone, splitIds) 6375 } 6376 }, 6377 iterLinkedDocs: function(f) {linkedDocs(this, f)}, 6378 6379 getMode: function() {return this.mode}, 6380 getEditor: function() {return this.cm}, 6381 6382 splitLines: function(str) { 6383 if (this.lineSep) { return str.split(this.lineSep) } 6384 return splitLinesAuto(str) 6385 }, 6386 lineSeparator: function() { return this.lineSep || "\n" }, 6387 6388 setDirection: docMethodOp(function (dir) { 6389 if (dir != "rtl") { dir = "ltr" } 6390 if (dir == this.direction) { return } 6391 this.direction = dir 6392 this.iter(function (line) { return line.order = null; }) 6393 if (this.cm) { directionChanged(this.cm) } 6394 }) 6395 }) 6396 6397 // Public alias. 6398 Doc.prototype.eachLine = Doc.prototype.iter 6399 6400 // Kludge to work around strange IE behavior where it'll sometimes 6401 // re-fire a series of drag-related events right after the drop (#1551) 6402 var lastDrop = 0 6403 6404 function onDrop(e) { 6405 var cm = this 6406 clearDragCursor(cm) 6407 if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) 6408 { return } 6409 e_preventDefault(e) 6410 if (ie) { lastDrop = +new Date } 6411 var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files 6412 if (!pos || cm.isReadOnly()) { return } 6413 // Might be a file drop, in which case we simply extract the text 6414 // and insert it. 6415 if (files && files.length && window.FileReader && window.File) { 6416 var n = files.length, text = Array(n), read = 0 6417 var loadFile = function (file, i) { 6418 if (cm.options.allowDropFileTypes && 6419 indexOf(cm.options.allowDropFileTypes, file.type) == -1) 6420 { return } 6421 6422 var reader = new FileReader 6423 reader.onload = operation(cm, function () { 6424 var content = reader.result 6425 if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = "" } 6426 text[i] = content 6427 if (++read == n) { 6428 pos = clipPos(cm.doc, pos) 6429 var change = {from: pos, to: pos, 6430 text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())), 6431 origin: "paste"} 6432 makeChange(cm.doc, change) 6433 setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))) 6434 } 6435 }) 6436 reader.readAsText(file) 6437 } 6438 for (var i = 0; i < n; ++i) { loadFile(files[i], i) } 6439 } else { // Normal drop 6440 // Don't do a replace if the drop happened inside of the selected text. 6441 if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { 6442 cm.state.draggingText(e) 6443 // Ensure the editor is re-focused 6444 setTimeout(function () { return cm.display.input.focus(); }, 20) 6445 return 6446 } 6447 try { 6448 var text$1 = e.dataTransfer.getData("Text") 6449 if (text$1) { 6450 var selected 6451 if (cm.state.draggingText && !cm.state.draggingText.copy) 6452 { selected = cm.listSelections() } 6453 setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)) 6454 if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1) 6455 { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag") } } 6456 cm.replaceSelection(text$1, "around", "paste") 6457 cm.display.input.focus() 6458 } 6459 } 6460 catch(e){} 6461 } 6462 } 6463 6464 function onDragStart(cm, e) { 6465 if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return } 6466 if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return } 6467 6468 e.dataTransfer.setData("Text", cm.getSelection()) 6469 e.dataTransfer.effectAllowed = "copyMove" 6470 6471 // Use dummy image instead of default browsers image. 6472 // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. 6473 if (e.dataTransfer.setDragImage && !safari) { 6474 var img = elt("img", null, null, "position: fixed; left: 0; top: 0;") 6475 img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" 6476 if (presto) { 6477 img.width = img.height = 1 6478 cm.display.wrapper.appendChild(img) 6479 // Force a relayout, or Opera won't use our image for some obscure reason 6480 img._top = img.offsetTop 6481 } 6482 e.dataTransfer.setDragImage(img, 0, 0) 6483 if (presto) { img.parentNode.removeChild(img) } 6484 } 6485 } 6486 6487 function onDragOver(cm, e) { 6488 var pos = posFromMouse(cm, e) 6489 if (!pos) { return } 6490 var frag = document.createDocumentFragment() 6491 drawSelectionCursor(cm, pos, frag) 6492 if (!cm.display.dragCursor) { 6493 cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors") 6494 cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv) 6495 } 6496 removeChildrenAndAdd(cm.display.dragCursor, frag) 6497 } 6498 6499 function clearDragCursor(cm) { 6500 if (cm.display.dragCursor) { 6501 cm.display.lineSpace.removeChild(cm.display.dragCursor) 6502 cm.display.dragCursor = null 6503 } 6504 } 6505 6506 // These must be handled carefully, because naively registering a 6507 // handler for each editor will cause the editors to never be 6508 // garbage collected. 6509 6510 function forEachCodeMirror(f) { 6511 if (!document.getElementsByClassName) { return } 6512 var byClass = document.getElementsByClassName("CodeMirror") 6513 for (var i = 0; i < byClass.length; i++) { 6514 var cm = byClass[i].CodeMirror 6515 if (cm) { f(cm) } 6516 } 6517 } 6518 6519 var globalsRegistered = false 6520 function ensureGlobalHandlers() { 6521 if (globalsRegistered) { return } 6522 registerGlobalHandlers() 6523 globalsRegistered = true 6524 } 6525 function registerGlobalHandlers() { 6526 // When the window resizes, we need to refresh active editors. 6527 var resizeTimer 6528 on(window, "resize", function () { 6529 if (resizeTimer == null) { resizeTimer = setTimeout(function () { 6530 resizeTimer = null 6531 forEachCodeMirror(onResize) 6532 }, 100) } 6533 }) 6534 // When the window loses focus, we want to show the editor as blurred 6535 on(window, "blur", function () { return forEachCodeMirror(onBlur); }) 6536 } 6537 // Called when the window resizes 6538 function onResize(cm) { 6539 var d = cm.display 6540 if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth) 6541 { return } 6542 // Might be a text scaling operation, clear size caches. 6543 d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null 6544 d.scrollbarsClipped = false 6545 cm.setSize() 6546 } 6547 6548 var keyNames = { 6549 3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", 6550 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", 6551 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", 6552 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 6553 106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 6554 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 6555 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", 6556 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert" 6557 } 6558 6559 // Number keys 6560 for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) } 6561 // Alphabetic keys 6562 for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) } 6563 // Function keys 6564 for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2 } 6565 6566 var keyMap = {} 6567 6568 keyMap.basic = { 6569 "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", 6570 "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", 6571 "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", 6572 "Tab": "defaultTab", "Shift-Tab": "indentAuto", 6573 "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", 6574 "Esc": "singleSelection" 6575 } 6576 // Note that the save and find-related commands aren't defined by 6577 // default. User code or addons can define them. Unknown commands 6578 // are simply ignored. 6579 keyMap.pcDefault = { 6580 "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", 6581 "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", 6582 "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", 6583 "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", 6584 "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", 6585 "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", 6586 "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", 6587 fallthrough: "basic" 6588 } 6589 // Very basic readline/emacs-style bindings, which are standard on Mac. 6590 keyMap.emacsy = { 6591 "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", 6592 "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", 6593 "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", 6594 "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars", 6595 "Ctrl-O": "openLine" 6596 } 6597 keyMap.macDefault = { 6598 "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", 6599 "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", 6600 "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", 6601 "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", 6602 "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", 6603 "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", 6604 "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", 6605 fallthrough: ["basic", "emacsy"] 6606 } 6607 keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault 6608 6609 // KEYMAP DISPATCH 6610 6611 function normalizeKeyName(name) { 6612 var parts = name.split(/-(?!$)/) 6613 name = parts[parts.length - 1] 6614 var alt, ctrl, shift, cmd 6615 for (var i = 0; i < parts.length - 1; i++) { 6616 var mod = parts[i] 6617 if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true } 6618 else if (/^a(lt)?$/i.test(mod)) { alt = true } 6619 else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true } 6620 else if (/^s(hift)?$/i.test(mod)) { shift = true } 6621 else { throw new Error("Unrecognized modifier name: " + mod) } 6622 } 6623 if (alt) { name = "Alt-" + name } 6624 if (ctrl) { name = "Ctrl-" + name } 6625 if (cmd) { name = "Cmd-" + name } 6626 if (shift) { name = "Shift-" + name } 6627 return name 6628 } 6629 6630 // This is a kludge to keep keymaps mostly working as raw objects 6631 // (backwards compatibility) while at the same time support features 6632 // like normalization and multi-stroke key bindings. It compiles a 6633 // new normalized keymap, and then updates the old object to reflect 6634 // this. 6635 function normalizeKeyMap(keymap) { 6636 var copy = {} 6637 for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) { 6638 var value = keymap[keyname] 6639 if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue } 6640 if (value == "...") { delete keymap[keyname]; continue } 6641 6642 var keys = map(keyname.split(" "), normalizeKeyName) 6643 for (var i = 0; i < keys.length; i++) { 6644 var val = (void 0), name = (void 0) 6645 if (i == keys.length - 1) { 6646 name = keys.join(" ") 6647 val = value 6648 } else { 6649 name = keys.slice(0, i + 1).join(" ") 6650 val = "..." 6651 } 6652 var prev = copy[name] 6653 if (!prev) { copy[name] = val } 6654 else if (prev != val) { throw new Error("Inconsistent bindings for " + name) } 6655 } 6656 delete keymap[keyname] 6657 } } 6658 for (var prop in copy) { keymap[prop] = copy[prop] } 6659 return keymap 6660 } 6661 6662 function lookupKey(key, map, handle, context) { 6663 map = getKeyMap(map) 6664 var found = map.call ? map.call(key, context) : map[key] 6665 if (found === false) { return "nothing" } 6666 if (found === "...") { return "multi" } 6667 if (found != null && handle(found)) { return "handled" } 6668 6669 if (map.fallthrough) { 6670 if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") 6671 { return lookupKey(key, map.fallthrough, handle, context) } 6672 for (var i = 0; i < map.fallthrough.length; i++) { 6673 var result = lookupKey(key, map.fallthrough[i], handle, context) 6674 if (result) { return result } 6675 } 6676 } 6677 } 6678 6679 // Modifier key presses don't count as 'real' key presses for the 6680 // purpose of keymap fallthrough. 6681 function isModifierKey(value) { 6682 var name = typeof value == "string" ? value : keyNames[value.keyCode] 6683 return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod" 6684 } 6685 6686 function addModifierNames(name, event, noShift) { 6687 var base = name 6688 if (event.altKey && base != "Alt") { name = "Alt-" + name } 6689 if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name } 6690 if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name } 6691 if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name } 6692 return name 6693 } 6694 6695 // Look up the name of a key as indicated by an event object. 6696 function keyName(event, noShift) { 6697 if (presto && event.keyCode == 34 && event["char"]) { return false } 6698 var name = keyNames[event.keyCode] 6699 if (name == null || event.altGraphKey) { return false } 6700 return addModifierNames(name, event, noShift) 6701 } 6702 6703 function getKeyMap(val) { 6704 return typeof val == "string" ? keyMap[val] : val 6705 } 6706 6707 // Helper for deleting text near the selection(s), used to implement 6708 // backspace, delete, and similar functionality. 6709 function deleteNearSelection(cm, compute) { 6710 var ranges = cm.doc.sel.ranges, kill = [] 6711 // Build up a set of ranges to kill first, merging overlapping 6712 // ranges. 6713 for (var i = 0; i < ranges.length; i++) { 6714 var toKill = compute(ranges[i]) 6715 while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { 6716 var replaced = kill.pop() 6717 if (cmp(replaced.from, toKill.from) < 0) { 6718 toKill.from = replaced.from 6719 break 6720 } 6721 } 6722 kill.push(toKill) 6723 } 6724 // Next, remove those actual ranges. 6725 runInOp(cm, function () { 6726 for (var i = kill.length - 1; i >= 0; i--) 6727 { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") } 6728 ensureCursorVisible(cm) 6729 }) 6730 } 6731 6732 function moveCharLogically(line, ch, dir) { 6733 var target = skipExtendingChars(line.text, ch + dir, dir) 6734 return target < 0 || target > line.text.length ? null : target 6735 } 6736 6737 function moveLogically(line, start, dir) { 6738 var ch = moveCharLogically(line, start.ch, dir) 6739 return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before") 6740 } 6741 6742 function endOfLine(visually, cm, lineObj, lineNo, dir) { 6743 if (visually) { 6744 var order = getOrder(lineObj, cm.doc.direction) 6745 if (order) { 6746 var part = dir < 0 ? lst(order) : order[0] 6747 var moveInStorageOrder = (dir < 0) == (part.level == 1) 6748 var sticky = moveInStorageOrder ? "after" : "before" 6749 var ch 6750 // With a wrapped rtl chunk (possibly spanning multiple bidi parts), 6751 // it could be that the last bidi part is not on the last visual line, 6752 // since visual lines contain content order-consecutive chunks. 6753 // Thus, in rtl, we are looking for the first (content-order) character 6754 // in the rtl chunk that is on the last line (that is, the same line 6755 // as the last (content-order) character). 6756 if (part.level > 0) { 6757 var prep = prepareMeasureForLine(cm, lineObj) 6758 ch = dir < 0 ? lineObj.text.length - 1 : 0 6759 var targetTop = measureCharPrepared(cm, prep, ch).top 6760 ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch) 6761 if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1) } 6762 } else { ch = dir < 0 ? part.to : part.from } 6763 return new Pos(lineNo, ch, sticky) 6764 } 6765 } 6766 return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after") 6767 } 6768 6769 function moveVisually(cm, line, start, dir) { 6770 var bidi = getOrder(line, cm.doc.direction) 6771 if (!bidi) { return moveLogically(line, start, dir) } 6772 if (start.ch >= line.text.length) { 6773 start.ch = line.text.length 6774 start.sticky = "before" 6775 } else if (start.ch <= 0) { 6776 start.ch = 0 6777 start.sticky = "after" 6778 } 6779 var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos] 6780 if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) { 6781 // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines, 6782 // nothing interesting happens. 6783 return moveLogically(line, start, dir) 6784 } 6785 6786 var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); } 6787 var prep 6788 var getWrappedLineExtent = function (ch) { 6789 if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} } 6790 prep = prep || prepareMeasureForLine(cm, line) 6791 return wrappedLineExtentChar(cm, line, prep, ch) 6792 } 6793 var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch) 6794 6795 if (cm.doc.direction == "rtl" || part.level == 1) { 6796 var moveInStorageOrder = (part.level == 1) == (dir < 0) 6797 var ch = mv(start, moveInStorageOrder ? 1 : -1) 6798 if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) { 6799 // Case 2: We move within an rtl part or in an rtl editor on the same visual line 6800 var sticky = moveInStorageOrder ? "before" : "after" 6801 return new Pos(start.line, ch, sticky) 6802 } 6803 } 6804 6805 // Case 3: Could not move within this bidi part in this visual line, so leave 6806 // the current bidi part 6807 6808 var searchInVisualLine = function (partPos, dir, wrappedLineExtent) { 6809 var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder 6810 ? new Pos(start.line, mv(ch, 1), "before") 6811 : new Pos(start.line, ch, "after"); } 6812 6813 for (; partPos >= 0 && partPos < bidi.length; partPos += dir) { 6814 var part = bidi[partPos] 6815 var moveInStorageOrder = (dir > 0) == (part.level != 1) 6816 var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1) 6817 if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) } 6818 ch = moveInStorageOrder ? part.from : mv(part.to, -1) 6819 if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) } 6820 } 6821 } 6822 6823 // Case 3a: Look for other bidi parts on the same visual line 6824 var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent) 6825 if (res) { return res } 6826 6827 // Case 3b: Look for other bidi parts on the next visual line 6828 var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1) 6829 if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) { 6830 res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh)) 6831 if (res) { return res } 6832 } 6833 6834 // Case 4: Nowhere to move 6835 return null 6836 } 6837 6838 // Commands are parameter-less actions that can be performed on an 6839 // editor, mostly used for keybindings. 6840 var commands = { 6841 selectAll: selectAll, 6842 singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); }, 6843 killLine: function (cm) { return deleteNearSelection(cm, function (range) { 6844 if (range.empty()) { 6845 var len = getLine(cm.doc, range.head.line).text.length 6846 if (range.head.ch == len && range.head.line < cm.lastLine()) 6847 { return {from: range.head, to: Pos(range.head.line + 1, 0)} } 6848 else 6849 { return {from: range.head, to: Pos(range.head.line, len)} } 6850 } else { 6851 return {from: range.from(), to: range.to()} 6852 } 6853 }); }, 6854 deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({ 6855 from: Pos(range.from().line, 0), 6856 to: clipPos(cm.doc, Pos(range.to().line + 1, 0)) 6857 }); }); }, 6858 delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({ 6859 from: Pos(range.from().line, 0), to: range.from() 6860 }); }); }, 6861 delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { 6862 var top = cm.charCoords(range.head, "div").top + 5 6863 var leftPos = cm.coordsChar({left: 0, top: top}, "div") 6864 return {from: leftPos, to: range.from()} 6865 }); }, 6866 delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) { 6867 var top = cm.charCoords(range.head, "div").top + 5 6868 var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") 6869 return {from: range.from(), to: rightPos } 6870 }); }, 6871 undo: function (cm) { return cm.undo(); }, 6872 redo: function (cm) { return cm.redo(); }, 6873 undoSelection: function (cm) { return cm.undoSelection(); }, 6874 redoSelection: function (cm) { return cm.redoSelection(); }, 6875 goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); }, 6876 goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); }, 6877 goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); }, 6878 {origin: "+move", bias: 1} 6879 ); }, 6880 goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); }, 6881 {origin: "+move", bias: 1} 6882 ); }, 6883 goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); }, 6884 {origin: "+move", bias: -1} 6885 ); }, 6886 goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) { 6887 var top = cm.cursorCoords(range.head, "div").top + 5 6888 return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") 6889 }, sel_move); }, 6890 goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) { 6891 var top = cm.cursorCoords(range.head, "div").top + 5 6892 return cm.coordsChar({left: 0, top: top}, "div") 6893 }, sel_move); }, 6894 goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) { 6895 var top = cm.cursorCoords(range.head, "div").top + 5 6896 var pos = cm.coordsChar({left: 0, top: top}, "div") 6897 if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) } 6898 return pos 6899 }, sel_move); }, 6900 goLineUp: function (cm) { return cm.moveV(-1, "line"); }, 6901 goLineDown: function (cm) { return cm.moveV(1, "line"); }, 6902 goPageUp: function (cm) { return cm.moveV(-1, "page"); }, 6903 goPageDown: function (cm) { return cm.moveV(1, "page"); }, 6904 goCharLeft: function (cm) { return cm.moveH(-1, "char"); }, 6905 goCharRight: function (cm) { return cm.moveH(1, "char"); }, 6906 goColumnLeft: function (cm) { return cm.moveH(-1, "column"); }, 6907 goColumnRight: function (cm) { return cm.moveH(1, "column"); }, 6908 goWordLeft: function (cm) { return cm.moveH(-1, "word"); }, 6909 goGroupRight: function (cm) { return cm.moveH(1, "group"); }, 6910 goGroupLeft: function (cm) { return cm.moveH(-1, "group"); }, 6911 goWordRight: function (cm) { return cm.moveH(1, "word"); }, 6912 delCharBefore: function (cm) { return cm.deleteH(-1, "char"); }, 6913 delCharAfter: function (cm) { return cm.deleteH(1, "char"); }, 6914 delWordBefore: function (cm) { return cm.deleteH(-1, "word"); }, 6915 delWordAfter: function (cm) { return cm.deleteH(1, "word"); }, 6916 delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); }, 6917 delGroupAfter: function (cm) { return cm.deleteH(1, "group"); }, 6918 indentAuto: function (cm) { return cm.indentSelection("smart"); }, 6919 indentMore: function (cm) { return cm.indentSelection("add"); }, 6920 indentLess: function (cm) { return cm.indentSelection("subtract"); }, 6921 insertTab: function (cm) { return cm.replaceSelection("\t"); }, 6922 insertSoftTab: function (cm) { 6923 var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize 6924 for (var i = 0; i < ranges.length; i++) { 6925 var pos = ranges[i].from() 6926 var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize) 6927 spaces.push(spaceStr(tabSize - col % tabSize)) 6928 } 6929 cm.replaceSelections(spaces) 6930 }, 6931 defaultTab: function (cm) { 6932 if (cm.somethingSelected()) { cm.indentSelection("add") } 6933 else { cm.execCommand("insertTab") } 6934 }, 6935 // Swap the two chars left and right of each selection's head. 6936 // Move cursor behind the two swapped characters afterwards. 6937 // 6938 // Doesn't consider line feeds a character. 6939 // Doesn't scan more than one line above to find a character. 6940 // Doesn't do anything on an empty line. 6941 // Doesn't do anything with non-empty selections. 6942 transposeChars: function (cm) { return runInOp(cm, function () { 6943 var ranges = cm.listSelections(), newSel = [] 6944 for (var i = 0; i < ranges.length; i++) { 6945 if (!ranges[i].empty()) { continue } 6946 var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text 6947 if (line) { 6948 if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) } 6949 if (cur.ch > 0) { 6950 cur = new Pos(cur.line, cur.ch + 1) 6951 cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), 6952 Pos(cur.line, cur.ch - 2), cur, "+transpose") 6953 } else if (cur.line > cm.doc.first) { 6954 var prev = getLine(cm.doc, cur.line - 1).text 6955 if (prev) { 6956 cur = new Pos(cur.line, 1) 6957 cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() + 6958 prev.charAt(prev.length - 1), 6959 Pos(cur.line - 1, prev.length - 1), cur, "+transpose") 6960 } 6961 } 6962 } 6963 newSel.push(new Range(cur, cur)) 6964 } 6965 cm.setSelections(newSel) 6966 }); }, 6967 newlineAndIndent: function (cm) { return runInOp(cm, function () { 6968 var sels = cm.listSelections() 6969 for (var i = sels.length - 1; i >= 0; i--) 6970 { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input") } 6971 sels = cm.listSelections() 6972 for (var i$1 = 0; i$1 < sels.length; i$1++) 6973 { cm.indentLine(sels[i$1].from().line, null, true) } 6974 ensureCursorVisible(cm) 6975 }); }, 6976 openLine: function (cm) { return cm.replaceSelection("\n", "start"); }, 6977 toggleOverwrite: function (cm) { return cm.toggleOverwrite(); } 6978 } 6979 6980 6981 function lineStart(cm, lineN) { 6982 var line = getLine(cm.doc, lineN) 6983 var visual = visualLine(line) 6984 if (visual != line) { lineN = lineNo(visual) } 6985 return endOfLine(true, cm, visual, lineN, 1) 6986 } 6987 function lineEnd(cm, lineN) { 6988 var line = getLine(cm.doc, lineN) 6989 var visual = visualLineEnd(line) 6990 if (visual != line) { lineN = lineNo(visual) } 6991 return endOfLine(true, cm, line, lineN, -1) 6992 } 6993 function lineStartSmart(cm, pos) { 6994 var start = lineStart(cm, pos.line) 6995 var line = getLine(cm.doc, start.line) 6996 var order = getOrder(line, cm.doc.direction) 6997 if (!order || order[0].level == 0) { 6998 var firstNonWS = Math.max(0, line.text.search(/\S/)) 6999 var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch 7000 return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky) 7001 } 7002 return start 7003 } 7004 7005 // Run a handler that was bound to a key. 7006 function doHandleBinding(cm, bound, dropShift) { 7007 if (typeof bound == "string") { 7008 bound = commands[bound] 7009 if (!bound) { return false } 7010 } 7011 // Ensure previous input has been read, so that the handler sees a 7012 // consistent view of the document 7013 cm.display.input.ensurePolled() 7014 var prevShift = cm.display.shift, done = false 7015 try { 7016 if (cm.isReadOnly()) { cm.state.suppressEdits = true } 7017 if (dropShift) { cm.display.shift = false } 7018 done = bound(cm) != Pass 7019 } finally { 7020 cm.display.shift = prevShift 7021 cm.state.suppressEdits = false 7022 } 7023 return done 7024 } 7025 7026 function lookupKeyForEditor(cm, name, handle) { 7027 for (var i = 0; i < cm.state.keyMaps.length; i++) { 7028 var result = lookupKey(name, cm.state.keyMaps[i], handle, cm) 7029 if (result) { return result } 7030 } 7031 return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) 7032 || lookupKey(name, cm.options.keyMap, handle, cm) 7033 } 7034 7035 // Note that, despite the name, this function is also used to check 7036 // for bound mouse clicks. 7037 7038 var stopSeq = new Delayed 7039 function dispatchKey(cm, name, e, handle) { 7040 var seq = cm.state.keySeq 7041 if (seq) { 7042 if (isModifierKey(name)) { return "handled" } 7043 stopSeq.set(50, function () { 7044 if (cm.state.keySeq == seq) { 7045 cm.state.keySeq = null 7046 cm.display.input.reset() 7047 } 7048 }) 7049 name = seq + " " + name 7050 } 7051 var result = lookupKeyForEditor(cm, name, handle) 7052 7053 if (result == "multi") 7054 { cm.state.keySeq = name } 7055 if (result == "handled") 7056 { signalLater(cm, "keyHandled", cm, name, e) } 7057 7058 if (result == "handled" || result == "multi") { 7059 e_preventDefault(e) 7060 restartBlink(cm) 7061 } 7062 7063 if (seq && !result && /\'$/.test(name)) { 7064 e_preventDefault(e) 7065 return true 7066 } 7067 return !!result 7068 } 7069 7070 // Handle a key from the keydown event. 7071 function handleKeyBinding(cm, e) { 7072 var name = keyName(e, true) 7073 if (!name) { return false } 7074 7075 if (e.shiftKey && !cm.state.keySeq) { 7076 // First try to resolve full name (including 'Shift-'). Failing 7077 // that, see if there is a cursor-motion command (starting with 7078 // 'go') bound to the keyname without 'Shift-'. 7079 return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); }) 7080 || dispatchKey(cm, name, e, function (b) { 7081 if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) 7082 { return doHandleBinding(cm, b) } 7083 }) 7084 } else { 7085 return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); }) 7086 } 7087 } 7088 7089 // Handle a key from the keypress event 7090 function handleCharBinding(cm, e, ch) { 7091 return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); }) 7092 } 7093 7094 var lastStoppedKey = null 7095 function onKeyDown(e) { 7096 var cm = this 7097 cm.curOp.focus = activeElt() 7098 if (signalDOMEvent(cm, e)) { return } 7099 // IE does strange things with escape. 7100 if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false } 7101 var code = e.keyCode 7102 cm.display.shift = code == 16 || e.shiftKey 7103 var handled = handleKeyBinding(cm, e) 7104 if (presto) { 7105 lastStoppedKey = handled ? code : null 7106 // Opera has no cut event... we try to at least catch the key combo 7107 if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) 7108 { cm.replaceSelection("", null, "cut") } 7109 } 7110 7111 // Turn mouse into crosshair when Alt is held on Mac. 7112 if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) 7113 { showCrossHair(cm) } 7114 } 7115 7116 function showCrossHair(cm) { 7117 var lineDiv = cm.display.lineDiv 7118 addClass(lineDiv, "CodeMirror-crosshair") 7119 7120 function up(e) { 7121 if (e.keyCode == 18 || !e.altKey) { 7122 rmClass(lineDiv, "CodeMirror-crosshair") 7123 off(document, "keyup", up) 7124 off(document, "mouseover", up) 7125 } 7126 } 7127 on(document, "keyup", up) 7128 on(document, "mouseover", up) 7129 } 7130 7131 function onKeyUp(e) { 7132 if (e.keyCode == 16) { this.doc.sel.shift = false } 7133 signalDOMEvent(this, e) 7134 } 7135 7136 function onKeyPress(e) { 7137 var cm = this 7138 if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return } 7139 var keyCode = e.keyCode, charCode = e.charCode 7140 if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} 7141 if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return } 7142 var ch = String.fromCharCode(charCode == null ? keyCode : charCode) 7143 // Some browsers fire keypress events for backspace 7144 if (ch == "\x08") { return } 7145 if (handleCharBinding(cm, e, ch)) { return } 7146 cm.display.input.onKeyPress(e) 7147 } 7148 7149 var DOUBLECLICK_DELAY = 400 7150 7151 var PastClick = function(time, pos, button) { 7152 this.time = time 7153 this.pos = pos 7154 this.button = button 7155 }; 7156 7157 PastClick.prototype.compare = function (time, pos, button) { 7158 return this.time + DOUBLECLICK_DELAY > time && 7159 cmp(pos, this.pos) == 0 && button == this.button 7160 }; 7161 7162 var lastClick; 7163 var lastDoubleClick; 7164 function clickRepeat(pos, button) { 7165 var now = +new Date 7166 if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) { 7167 lastClick = lastDoubleClick = null 7168 return "triple" 7169 } else if (lastClick && lastClick.compare(now, pos, button)) { 7170 lastDoubleClick = new PastClick(now, pos, button) 7171 lastClick = null 7172 return "double" 7173 } else { 7174 lastClick = new PastClick(now, pos, button) 7175 lastDoubleClick = null 7176 return "single" 7177 } 7178 } 7179 7180 // A mouse down can be a single click, double click, triple click, 7181 // start of selection drag, start of text drag, new cursor 7182 // (ctrl-click), rectangle drag (alt-drag), or xwin 7183 // middle-click-paste. Or it might be a click on something we should 7184 // not interfere with, such as a scrollbar or widget. 7185 function onMouseDown(e) { 7186 var cm = this, display = cm.display 7187 if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return } 7188 display.input.ensurePolled() 7189 display.shift = e.shiftKey 7190 7191 if (eventInWidget(display, e)) { 7192 if (!webkit) { 7193 // Briefly turn off draggability, to allow widgets to do 7194 // normal dragging things. 7195 display.scroller.draggable = false 7196 setTimeout(function () { return display.scroller.draggable = true; }, 100) 7197 } 7198 return 7199 } 7200 if (clickInGutter(cm, e)) { return } 7201 var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single" 7202 window.focus() 7203 7204 // #3261: make sure, that we're not starting a second selection 7205 if (button == 1 && cm.state.selectingText) 7206 { cm.state.selectingText(e) } 7207 7208 if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return } 7209 7210 if (button == 1) { 7211 if (pos) { leftButtonDown(cm, pos, repeat, e) } 7212 else if (e_target(e) == display.scroller) { e_preventDefault(e) } 7213 } else if (button == 2) { 7214 if (pos) { extendSelection(cm.doc, pos) } 7215 setTimeout(function () { return display.input.focus(); }, 20) 7216 } else if (button == 3) { 7217 if (captureRightClick) { onContextMenu(cm, e) } 7218 else { delayBlurEvent(cm) } 7219 } 7220 } 7221 7222 function handleMappedButton(cm, button, pos, repeat, event) { 7223 var name = "Click" 7224 if (repeat == "double") { name = "Double" + name } 7225 else if (repeat == "triple") { name = "Triple" + name } 7226 name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name 7227 7228 return dispatchKey(cm, addModifierNames(name, event), event, function (bound) { 7229 if (typeof bound == "string") { bound = commands[bound] } 7230 if (!bound) { return false } 7231 var done = false 7232 try { 7233 if (cm.isReadOnly()) { cm.state.suppressEdits = true } 7234 done = bound(cm, pos) != Pass 7235 } finally { 7236 cm.state.suppressEdits = false 7237 } 7238 return done 7239 }) 7240 } 7241 7242 function configureMouse(cm, repeat, event) { 7243 var option = cm.getOption("configureMouse") 7244 var value = option ? option(cm, repeat, event) : {} 7245 if (value.unit == null) { 7246 var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey 7247 value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line" 7248 } 7249 if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey } 7250 if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey } 7251 if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey) } 7252 return value 7253 } 7254 7255 function leftButtonDown(cm, pos, repeat, event) { 7256 if (ie) { setTimeout(bind(ensureFocus, cm), 0) } 7257 else { cm.curOp.focus = activeElt() } 7258 7259 var behavior = configureMouse(cm, repeat, event) 7260 7261 var sel = cm.doc.sel, contained 7262 if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() && 7263 repeat == "single" && (contained = sel.contains(pos)) > -1 && 7264 (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) && 7265 (cmp(contained.to(), pos) > 0 || pos.xRel < 0)) 7266 { leftButtonStartDrag(cm, event, pos, behavior) } 7267 else 7268 {