| 1 | // CodeMirror is the only global var we claim |
| 2 | window.CodeMirror = (function() { |
| 3 | "use strict"; |
| 4 | |
| 5 | // BROWSER SNIFFING |
| 6 | |
| 7 | // Crude, but necessary to handle a number of hard-to-feature-detect |
| 8 | // bugs and behavior differences. |
| 9 | var gecko = /gecko\/\d/i.test(navigator.userAgent); |
| 10 | // IE11 currently doesn't count as 'ie', since it has almost none of |
| 11 | // the same bugs as earlier versions. Use ie_gt10 to handle |
| 12 | // incompatibilities in that version. |
| 13 | var old_ie = /MSIE \d/.test(navigator.userAgent); |
| 14 | var ie_lt8 = old_ie && (document.documentMode == null || document.documentMode < 8); |
| 15 | var ie_lt9 = old_ie && (document.documentMode == null || document.documentMode < 9); |
| 16 | var ie_gt10 = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent); |
| 17 | var ie = old_ie || ie_gt10; |
| 18 | var webkit = /WebKit\//.test(navigator.userAgent); |
| 19 | var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); |
| 20 | var chrome = /Chrome\//.test(navigator.userAgent); |
| 21 | var opera = /Opera\//.test(navigator.userAgent); |
| 22 | var safari = /Apple Computer/.test(navigator.vendor); |
| 23 | var khtml = /KHTML\//.test(navigator.userAgent); |
| 24 | var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); |
| 25 | var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); |
| 26 | var phantom = /PhantomJS/.test(navigator.userAgent); |
| 27 | |
| 28 | var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); |
| 29 | // This is woefully incomplete. Suggestions for alternative methods welcome. |
| 30 | var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); |
| 31 | var mac = ios || /Mac/.test(navigator.platform); |
| 32 | var windows = /win/i.test(navigator.platform); |
| 33 | |
| 34 | var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); |
| 35 | if (opera_version) opera_version = Number(opera_version[1]); |
| 36 | if (opera_version && opera_version >= 15) { opera = false; webkit = true; } |
| 37 | // Some browsers use the wrong event properties to signal cmd/ctrl on OS X |
| 38 | var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); |
| 39 | var captureMiddleClick = gecko || (ie && !ie_lt9); |
| 40 | |
| 41 | // Optimize some code when these features are not used |
| 42 | var sawReadOnlySpans = false, sawCollapsedSpans = false; |
| 43 | |
| 44 | // CONSTRUCTOR |
| 45 | |
| 46 | function CodeMirror(place, options) { |
| 47 | if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); |
| 48 | |
| 49 | this.options = options = options || {}; |
| 50 | // Determine effective options based on given values and defaults. |
| 51 | for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) |
| 52 | options[opt] = defaults[opt]; |
| 53 | setGuttersForLineNumbers(options); |
| 54 | |
| 55 | var docStart = typeof options.value == "string" ? 0 : options.value.first; |
| 56 | var display = this.display = makeDisplay(place, docStart); |
| 57 | display.wrapper.CodeMirror = this; |
| 58 | updateGutters(this); |
| 59 | if (options.autofocus && !mobile) focusInput(this); |
| 60 | |
| 61 | this.state = {keyMaps: [], |
| 62 | overlays: [], |
| 63 | modeGen: 0, |
| 64 | overwrite: false, focused: false, |
| 65 | suppressEdits: false, |
| 66 | pasteIncoming: false, cutIncoming: false, |
| 67 | draggingText: false, |
| 68 | highlight: new Delayed()}; |
| 69 | |
| 70 | themeChanged(this); |
| 71 | if (options.lineWrapping) |
| 72 | this.display.wrapper.className += " CodeMirror-wrap"; |
| 73 | |
| 74 | var doc = options.value; |
| 75 | if (typeof doc == "string") doc = new Doc(options.value, options.mode); |
| 76 | operation(this, attachDoc)(this, doc); |
| 77 | |
| 78 | // Override magic textarea content restore that IE sometimes does |
| 79 | // on our hidden textarea on reload |
| 80 | if (old_ie) setTimeout(bind(resetInput, this, true), 20); |
| 81 | |
| 82 | registerEventHandlers(this); |
| 83 | // IE throws unspecified error in certain cases, when |
| 84 | // trying to access activeElement before onload |
| 85 | var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } |
| 86 | if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); |
| 87 | else onBlur(this); |
| 88 | |
| 89 | operation(this, function() { |
| 90 | for (var opt in optionHandlers) |
| 91 | if (optionHandlers.propertyIsEnumerable(opt)) |
| 92 | optionHandlers[opt](this, options[opt], Init); |
| 93 | for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); |
| 94 | })(); |
| 95 | } |
| 96 | |
| 97 | // DISPLAY CONSTRUCTOR |
| 98 | |
| 99 | function makeDisplay(place, docStart) { |
| 100 | var d = {}; |
| 101 | |
| 102 | var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); |
| 103 | if (webkit) input.style.width = "1000px"; |
| 104 | else input.setAttribute("wrap", "off"); |
| 105 | // if border: 0; -- iOS fails to open keyboard (issue #1287) |
| 106 | if (ios) input.style.border = "1px solid black"; |
| 107 | input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); |
| 108 | |
| 109 | // Wraps and hides input textarea |
| 110 | d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); |
| 111 | // The actual fake scrollbars. |
| 112 | d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); |
| 113 | d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); |
| 114 | d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); |
| 115 | d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); |
| 116 | // DIVs containing the selection and the actual code |
| 117 | d.lineDiv = elt("div", null, "CodeMirror-code"); |
| 118 | d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); |
| 119 | // Blinky cursor, and element used to ensure cursor fits at the end of a line |
| 120 | d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); |
| 121 | // Secondary cursor, shown when on a 'jump' in bi-directional text |
| 122 | d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); |
| 123 | // Used to measure text size |
| 124 | d.measure = elt("div", null, "CodeMirror-measure"); |
| 125 | // Wraps everything that needs to exist inside the vertically-padded coordinate system |
| 126 | d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], |
| 127 | null, "position: relative; outline: none"); |
| 128 | // Moved around its parent to cover visible view |
| 129 | d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); |
| 130 | // Set to the height of the text, causes scrolling |
| 131 | d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); |
| 132 | // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers |
| 133 | d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); |
| 134 | // Will contain the gutters, if any |
| 135 | d.gutters = elt("div", null, "CodeMirror-gutters"); |
| 136 | d.lineGutter = null; |
| 137 | // Provides scrolling |
| 138 | d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); |
| 139 | d.scroller.setAttribute("tabIndex", "-1"); |
| 140 | // The element in which the editor lives. |
| 141 | d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, |
| 142 | d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); |
| 143 | // Work around IE7 z-index bug |
| 144 | if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } |
| 145 | if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); |
| 146 | |
| 147 | // Needed to hide big blue blinking cursor on Mobile Safari |
| 148 | if (ios) input.style.width = "0px"; |
| 149 | if (!webkit) d.scroller.draggable = true; |
| 150 | // Needed to handle Tab key in KHTML |
| 151 | if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } |
| 152 | // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). |
| 153 | else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; |
| 154 | |
| 155 | // Current visible range (may be bigger than the view window). |
| 156 | d.viewOffset = d.lastSizeC = 0; |
| 157 | d.showingFrom = d.showingTo = docStart; |
| 158 | |
| 159 | // Used to only resize the line number gutter when necessary (when |
| 160 | // the amount of lines crosses a boundary that makes its width change) |
| 161 | d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; |
| 162 | // See readInput and resetInput |
| 163 | d.prevInput = ""; |
| 164 | // Set to true when a non-horizontal-scrolling widget is added. As |
| 165 | // an optimization, widget aligning is skipped when d is false. |
| 166 | d.alignWidgets = false; |
| 167 | // Flag that indicates whether we currently expect input to appear |
| 168 | // (after some event like 'keypress' or 'input') and are polling |
| 169 | // intensively. |
| 170 | d.pollingFast = false; |
| 171 | // Self-resetting timeout for the poller |
| 172 | d.poll = new Delayed(); |
| 173 | |
| 174 | d.cachedCharWidth = d.cachedTextHeight = null; |
| 175 | d.measureLineCache = []; |
| 176 | d.measureLineCachePos = 0; |
| 177 | |
| 178 | // Tracks when resetInput has punted to just putting a short |
| 179 | // string instead of the (large) selection. |
| 180 | d.inaccurateSelection = false; |
| 181 | |
| 182 | // Tracks the maximum line length so that the horizontal scrollbar |
| 183 | // can be kept static when scrolling. |
| 184 | d.maxLine = null; |
| 185 | d.maxLineLength = 0; |
| 186 | d.maxLineChanged = false; |
| 187 | |
| 188 | // Used for measuring wheel scrolling granularity |
| 189 | d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; |
| 190 | |
| 191 | return d; |
| 192 | } |
| 193 | |
| 194 | // STATE UPDATES |
| 195 | |
| 196 | // Used to get the editor into a consistent state again when options change. |
| 197 | |
| 198 | function loadMode(cm) { |
| 199 | cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); |
| 200 | resetModeState(cm); |
| 201 | } |
| 202 | |
| 203 | function resetModeState(cm) { |
| 204 | cm.doc.iter(function(line) { |
| 205 | if (line.stateAfter) line.stateAfter = null; |
| 206 | if (line.styles) line.styles = null; |
| 207 | }); |
| 208 | cm.doc.frontier = cm.doc.first; |
| 209 | startWorker(cm, 100); |
| 210 | cm.state.modeGen++; |
| 211 | if (cm.curOp) regChange(cm); |
| 212 | } |
| 213 | |
| 214 | function wrappingChanged(cm) { |
| 215 | if (cm.options.lineWrapping) { |
| 216 | cm.display.wrapper.className += " CodeMirror-wrap"; |
| 217 | cm.display.sizer.style.minWidth = ""; |
| 218 | } else { |
| 219 | cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); |
| 220 | computeMaxLength(cm); |
| 221 | } |
| 222 | estimateLineHeights(cm); |
| 223 | regChange(cm); |
| 224 | clearCaches(cm); |
| 225 | setTimeout(function(){updateScrollbars(cm);}, 100); |
| 226 | } |
| 227 | |
| 228 | function estimateHeight(cm) { |
| 229 | var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; |
| 230 | var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); |
| 231 | return function(line) { |
| 232 | if (lineIsHidden(cm.doc, line)) |
| 233 | return 0; |
| 234 | else if (wrapping) |
| 235 | return (Math.ceil(line.text.length / perLine) || 1) * th; |
| 236 | else |
| 237 | return th; |
| 238 | }; |
| 239 | } |
| 240 | |
| 241 | function estimateLineHeights(cm) { |
| 242 | var doc = cm.doc, est = estimateHeight(cm); |
| 243 | doc.iter(function(line) { |
| 244 | var estHeight = est(line); |
| 245 | if (estHeight != line.height) updateLineHeight(line, estHeight); |
| 246 | }); |
| 247 | } |
| 248 | |
| 249 | function keyMapChanged(cm) { |
| 250 | var map = keyMap[cm.options.keyMap], style = map.style; |
| 251 | cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + |
| 252 | (style ? " cm-keymap-" + style : ""); |
| 253 | } |
| 254 | |
| 255 | function themeChanged(cm) { |
| 256 | cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + |
| 257 | cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); |
| 258 | clearCaches(cm); |
| 259 | } |
| 260 | |
| 261 | function guttersChanged(cm) { |
| 262 | updateGutters(cm); |
| 263 | regChange(cm); |
| 264 | setTimeout(function(){alignHorizontally(cm);}, 20); |
| 265 | } |
| 266 | |
| 267 | function updateGutters(cm) { |
| 268 | var gutters = cm.display.gutters, specs = cm.options.gutters; |
| 269 | removeChildren(gutters); |
| 270 | for (var i = 0; i < specs.length; ++i) { |
| 271 | var gutterClass = specs[i]; |
| 272 | var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); |
| 273 | if (gutterClass == "CodeMirror-linenumbers") { |
| 274 | cm.display.lineGutter = gElt; |
| 275 | gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; |
| 276 | } |
| 277 | } |
| 278 | gutters.style.display = i ? "" : "none"; |
| 279 | } |
| 280 | |
| 281 | function lineLength(doc, line) { |
| 282 | if (line.height == 0) return 0; |
| 283 | var len = line.text.length, merged, cur = line; |
| 284 | while (merged = collapsedSpanAtStart(cur)) { |
| 285 | var found = merged.find(); |
| 286 | cur = getLine(doc, found.from.line); |
| 287 | len += found.from.ch - found.to.ch; |
| 288 | } |
| 289 | cur = line; |
| 290 | while (merged = collapsedSpanAtEnd(cur)) { |
| 291 | var found = merged.find(); |
| 292 | len -= cur.text.length - found.from.ch; |
| 293 | cur = getLine(doc, found.to.line); |
| 294 | len += cur.text.length - found.to.ch; |
| 295 | } |
| 296 | return len; |
| 297 | } |
| 298 | |
| 299 | function computeMaxLength(cm) { |
| 300 | var d = cm.display, doc = cm.doc; |
| 301 | d.maxLine = getLine(doc, doc.first); |
| 302 | d.maxLineLength = lineLength(doc, d.maxLine); |
| 303 | d.maxLineChanged = true; |
| 304 | doc.iter(function(line) { |
| 305 | var len = lineLength(doc, line); |
| 306 | if (len > d.maxLineLength) { |
| 307 | d.maxLineLength = len; |
| 308 | d.maxLine = line; |
| 309 | } |
| 310 | }); |
| 311 | } |
| 312 | |
| 313 | // Make sure the gutters options contains the element |
| 314 | // "CodeMirror-linenumbers" when the lineNumbers option is true. |
| 315 | function setGuttersForLineNumbers(options) { |
| 316 | var found = indexOf(options.gutters, "CodeMirror-linenumbers"); |
| 317 | if (found == -1 && options.lineNumbers) { |
| 318 | options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); |
| 319 | } else if (found > -1 && !options.lineNumbers) { |
| 320 | options.gutters = options.gutters.slice(0); |
| 321 | options.gutters.splice(found, 1); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | // SCROLLBARS |
| 326 | |
| 327 | // Re-synchronize the fake scrollbars with the actual size of the |
| 328 | // content. Optionally force a scrollTop. |
| 329 | function updateScrollbars(cm) { |
| 330 | var d = cm.display, docHeight = cm.doc.height; |
| 331 | var totalHeight = docHeight + paddingVert(d); |
| 332 | d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; |
| 333 | d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; |
| 334 | var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); |
| 335 | var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1); |
| 336 | var needsV = scrollHeight > (d.scroller.clientHeight + 1); |
| 337 | if (needsV) { |
| 338 | d.scrollbarV.style.display = "block"; |
| 339 | d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; |
| 340 | // A bug in IE8 can cause this value to be negative, so guard it. |
| 341 | d.scrollbarV.firstChild.style.height = |
| 342 | Math.max(0, scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; |
| 343 | } else { |
| 344 | d.scrollbarV.style.display = ""; |
| 345 | d.scrollbarV.firstChild.style.height = "0"; |
| 346 | } |
| 347 | if (needsH) { |
| 348 | d.scrollbarH.style.display = "block"; |
| 349 | d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; |
| 350 | d.scrollbarH.firstChild.style.width = |
| 351 | (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; |
| 352 | } else { |
| 353 | d.scrollbarH.style.display = ""; |
| 354 | d.scrollbarH.firstChild.style.width = "0"; |
| 355 | } |
| 356 | if (needsH && needsV) { |
| 357 | d.scrollbarFiller.style.display = "block"; |
| 358 | d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; |
| 359 | } else d.scrollbarFiller.style.display = ""; |
| 360 | if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { |
| 361 | d.gutterFiller.style.display = "block"; |
| 362 | d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; |
| 363 | d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; |
| 364 | } else d.gutterFiller.style.display = ""; |
| 365 | |
| 366 | if (mac_geLion && scrollbarWidth(d.measure) === 0) { |
| 367 | d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; |
| 368 | d.scrollbarV.style.pointerEvents = d.scrollbarH.style.pointerEvents = "none"; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | function visibleLines(display, doc, viewPort) { |
| 373 | var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; |
| 374 | if (typeof viewPort == "number") top = viewPort; |
| 375 | else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} |
| 376 | top = Math.floor(top - paddingTop(display)); |
| 377 | var bottom = Math.ceil(top + height); |
| 378 | return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; |
| 379 | } |
| 380 | |
| 381 | // LINE NUMBERS |
| 382 | |
| 383 | function alignHorizontally(cm) { |
| 384 | var display = cm.display; |
| 385 | if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; |
| 386 | var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; |
| 387 | var gutterW = display.gutters.offsetWidth, l = comp + "px"; |
| 388 | for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) { |
| 389 | for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l; |
| 390 | } |
| 391 | if (cm.options.fixedGutter) |
| 392 | display.gutters.style.left = (comp + gutterW) + "px"; |
| 393 | } |
| 394 | |
| 395 | function maybeUpdateLineNumberWidth(cm) { |
| 396 | if (!cm.options.lineNumbers) return false; |
| 397 | var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; |
| 398 | if (last.length != display.lineNumChars) { |
| 399 | var test = display.measure.appendChild(elt("div", [elt("div", last)], |
| 400 | "CodeMirror-linenumber CodeMirror-gutter-elt")); |
| 401 | var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; |
| 402 | display.lineGutter.style.width = ""; |
| 403 | display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding); |
| 404 | display.lineNumWidth = display.lineNumInnerWidth + padding; |
| 405 | display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; |
| 406 | display.lineGutter.style.width = display.lineNumWidth + "px"; |
| 407 | return true; |
| 408 | } |
| 409 | return false; |
| 410 | } |
| 411 | |
| 412 | function lineNumberFor(options, i) { |
| 413 | return String(options.lineNumberFormatter(i + options.firstLineNumber)); |
| 414 | } |
| 415 | function compensateForHScroll(display) { |
| 416 | return getRect(display.scroller).left - getRect(display.sizer).left; |
| 417 | } |
| 418 | |
| 419 | // DISPLAY DRAWING |
| 420 | |
| 421 | function updateDisplay(cm, changes, viewPort, forced) { |
| 422 | var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; |
| 423 | var visible = visibleLines(cm.display, cm.doc, viewPort); |
| 424 | for (var first = true;; first = false) { |
| 425 | var oldWidth = cm.display.scroller.clientWidth; |
| 426 | if (!updateDisplayInner(cm, changes, visible, forced)) break; |
| 427 | updated = true; |
| 428 | changes = []; |
| 429 | updateSelection(cm); |
| 430 | updateScrollbars(cm); |
| 431 | if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) { |
| 432 | forced = true; |
| 433 | continue; |
| 434 | } |
| 435 | forced = false; |
| 436 | |
| 437 | // Clip forced viewport to actual scrollable area |
| 438 | if (viewPort) |
| 439 | viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, |
| 440 | typeof viewPort == "number" ? viewPort : viewPort.top); |
| 441 | visible = visibleLines(cm.display, cm.doc, viewPort); |
| 442 | if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) |
| 443 | break; |
| 444 | } |
| 445 | |
| 446 | if (updated) { |
| 447 | signalLater(cm, "update", cm); |
| 448 | if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) |
| 449 | signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); |
| 450 | } |
| 451 | return updated; |
| 452 | } |
| 453 | |
| 454 | // Uses a set of changes plus the current scroll position to |
| 455 | // determine which DOM updates have to be made, and makes the |
| 456 | // updates. |
| 457 | function updateDisplayInner(cm, changes, visible, forced) { |
| 458 | var display = cm.display, doc = cm.doc; |
| 459 | if (!display.wrapper.offsetWidth) { |
| 460 | display.showingFrom = display.showingTo = doc.first; |
| 461 | display.viewOffset = 0; |
| 462 | return; |
| 463 | } |
| 464 | |
| 465 | // Bail out if the visible area is already rendered and nothing changed. |
| 466 | if (!forced && changes.length == 0 && |
| 467 | visible.from > display.showingFrom && visible.to < display.showingTo) |
| 468 | return; |
| 469 | |
| 470 | if (maybeUpdateLineNumberWidth(cm)) |
| 471 | changes = [{from: doc.first, to: doc.first + doc.size}]; |
| 472 | var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px"; |
| 473 | display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0"; |
| 474 | |
| 475 | // Used to determine which lines need their line numbers updated |
| 476 | var positionsChangedFrom = Infinity; |
| 477 | if (cm.options.lineNumbers) |
| 478 | for (var i = 0; i < changes.length; ++i) |
| 479 | if (changes[i].diff && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; } |
| 480 | |
| 481 | var end = doc.first + doc.size; |
| 482 | var from = Math.max(visible.from - cm.options.viewportMargin, doc.first); |
| 483 | var to = Math.min(end, visible.to + cm.options.viewportMargin); |
| 484 | if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom); |
| 485 | if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo); |
| 486 | if (sawCollapsedSpans) { |
| 487 | from = lineNo(visualLine(doc, getLine(doc, from))); |
| 488 | while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to; |
| 489 | } |
| 490 | |
| 491 | // Create a range of theoretically intact lines, and punch holes |
| 492 | // in that using the change info. |
| 493 | var intact = [{from: Math.max(display.showingFrom, doc.first), |
| 494 | to: Math.min(display.showingTo, end)}]; |
| 495 | if (intact[0].from >= intact[0].to) intact = []; |
| 496 | else intact = computeIntact(intact, changes); |
| 497 | // When merged lines are present, we might have to reduce the |
| 498 | // intact ranges because changes in continued fragments of the |
| 499 | // intact lines do require the lines to be redrawn. |
| 500 | if (sawCollapsedSpans) |
| 501 | for (var i = 0; i < intact.length; ++i) { |
| 502 | var range = intact[i], merged; |
| 503 | while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) { |
| 504 | var newTo = merged.find().from.line; |
| 505 | if (newTo > range.from) range.to = newTo; |
| 506 | else { intact.splice(i--, 1); break; } |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | // Clip off the parts that won't be visible |
| 511 | var intactLines = 0; |
| 512 | for (var i = 0; i < intact.length; ++i) { |
| 513 | var range = intact[i]; |
| 514 | if (range.from < from) range.from = from; |
| 515 | if (range.to > to) range.to = to; |
| 516 | if (range.from >= range.to) intact.splice(i--, 1); |
| 517 | else intactLines += range.to - range.from; |
| 518 | } |
| 519 | if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) { |
| 520 | updateViewOffset(cm); |
| 521 | return; |
| 522 | } |
| 523 | intact.sort(function(a, b) {return a.from - b.from;}); |
| 524 | |
| 525 | // Avoid crashing on IE's "unspecified error" when in iframes |
| 526 | try { |
| 527 | var focused = document.activeElement; |
| 528 | } catch(e) {} |
| 529 | if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; |
| 530 | patchDisplay(cm, from, to, intact, positionsChangedFrom); |
| 531 | display.lineDiv.style.display = ""; |
| 532 | if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus(); |
| 533 | |
| 534 | var different = from != display.showingFrom || to != display.showingTo || |
| 535 | display.lastSizeC != display.wrapper.clientHeight; |
| 536 | // This is just a bogus formula that detects when the editor is |
| 537 | // resized or the font size changes. |
| 538 | if (different) { |
| 539 | display.lastSizeC = display.wrapper.clientHeight; |
| 540 | startWorker(cm, 400); |
| 541 | } |
| 542 | display.showingFrom = from; display.showingTo = to; |
| 543 | |
| 544 | display.gutters.style.height = ""; |
| 545 | updateHeightsInViewport(cm); |
| 546 | updateViewOffset(cm); |
| 547 | |
| 548 | return true; |
| 549 | } |
| 550 | |
| 551 | function updateHeightsInViewport(cm) { |
| 552 | var display = cm.display; |
| 553 | var prevBottom = display.lineDiv.offsetTop; |
| 554 | for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { |
| 555 | if (ie_lt8) { |
| 556 | var bot = node.offsetTop + node.offsetHeight; |
| 557 | height = bot - prevBottom; |
| 558 | prevBottom = bot; |
| 559 | } else { |
| 560 | var box = getRect(node); |
| 561 | height = box.bottom - box.top; |
| 562 | } |
| 563 | var diff = node.lineObj.height - height; |
| 564 | if (height < 2) height = textHeight(display); |
| 565 | if (diff > .001 || diff < -.001) { |
| 566 | updateLineHeight(node.lineObj, height); |
| 567 | var widgets = node.lineObj.widgets; |
| 568 | if (widgets) for (var i = 0; i < widgets.length; ++i) |
| 569 | widgets[i].height = widgets[i].node.offsetHeight; |
| 570 | } |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | function updateViewOffset(cm) { |
| 575 | var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom)); |
| 576 | // Position the mover div to align with the current virtual scroll position |
| 577 | cm.display.mover.style.top = off + "px"; |
| 578 | } |
| 579 | |
| 580 | function computeIntact(intact, changes) { |
| 581 | for (var i = 0, l = changes.length || 0; i < l; ++i) { |
| 582 | var change = changes[i], intact2 = [], diff = change.diff || 0; |
| 583 | for (var j = 0, l2 = intact.length; j < l2; ++j) { |
| 584 | var range = intact[j]; |
| 585 | if (change.to <= range.from && change.diff) { |
| 586 | intact2.push({from: range.from + diff, to: range.to + diff}); |
| 587 | } else if (change.to <= range.from || change.from >= range.to) { |
| 588 | intact2.push(range); |
| 589 | } else { |
| 590 | if (change.from > range.from) |
| 591 | intact2.push({from: range.from, to: change.from}); |
| 592 | if (change.to < range.to) |
| 593 | intact2.push({from: change.to + diff, to: range.to + diff}); |
| 594 | } |
| 595 | } |
| 596 | intact = intact2; |
| 597 | } |
| 598 | return intact; |
| 599 | } |
| 600 | |
| 601 | function getDimensions(cm) { |
| 602 | var d = cm.display, left = {}, width = {}; |
| 603 | for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { |
| 604 | left[cm.options.gutters[i]] = n.offsetLeft; |
| 605 | width[cm.options.gutters[i]] = n.offsetWidth; |
| 606 | } |
| 607 | return {fixedPos: compensateForHScroll(d), |
| 608 | gutterTotalWidth: d.gutters.offsetWidth, |
| 609 | gutterLeft: left, |
| 610 | gutterWidth: width, |
| 611 | wrapperWidth: d.wrapper.clientWidth}; |
| 612 | } |
| 613 | |
| 614 | function patchDisplay(cm, from, to, intact, updateNumbersFrom) { |
| 615 | var dims = getDimensions(cm); |
| 616 | var display = cm.display, lineNumbers = cm.options.lineNumbers; |
| 617 | if (!intact.length && (!webkit || !cm.display.currentWheelTarget)) |
| 618 | removeChildren(display.lineDiv); |
| 619 | var container = display.lineDiv, cur = container.firstChild; |
| 620 | |
| 621 | function rm(node) { |
| 622 | var next = node.nextSibling; |
| 623 | if (webkit && mac && cm.display.currentWheelTarget == node) { |
| 624 | node.style.display = "none"; |
| 625 | node.lineObj = null; |
| 626 | } else { |
| 627 | node.parentNode.removeChild(node); |
| 628 | } |
| 629 | return next; |
| 630 | } |
| 631 | |
| 632 | var nextIntact = intact.shift(), lineN = from; |
| 633 | cm.doc.iter(from, to, function(line) { |
| 634 | if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift(); |
| 635 | if (lineIsHidden(cm.doc, line)) { |
| 636 | if (line.height != 0) updateLineHeight(line, 0); |
| 637 | if (line.widgets && cur && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) { |
| 638 | var w = line.widgets[i]; |
| 639 | if (w.showIfHidden) { |
| 640 | var prev = cur.previousSibling; |
| 641 | if (/pre/i.test(prev.nodeName)) { |
| 642 | var wrap = elt("div", null, null, "position: relative"); |
| 643 | prev.parentNode.replaceChild(wrap, prev); |
| 644 | wrap.appendChild(prev); |
| 645 | prev = wrap; |
| 646 | } |
| 647 | var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget")); |
| 648 | if (!w.handleMouseEvents) wnode.ignoreEvents = true; |
| 649 | positionLineWidget(w, wnode, prev, dims); |
| 650 | } |
| 651 | } |
| 652 | } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) { |
| 653 | // This line is intact. Skip to the actual node. Update its |
| 654 | // line number if needed. |
| 655 | while (cur.lineObj != line) cur = rm(cur); |
| 656 | if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber) |
| 657 | setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN)); |
| 658 | cur = cur.nextSibling; |
| 659 | } else { |
| 660 | // For lines with widgets, make an attempt to find and reuse |
| 661 | // the existing element, so that widgets aren't needlessly |
| 662 | // removed and re-inserted into the dom |
| 663 | if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling) |
| 664 | if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; } |
| 665 | // This line needs to be generated. |
| 666 | var lineNode = buildLineElement(cm, line, lineN, dims, reuse); |
| 667 | if (lineNode != reuse) { |
| 668 | container.insertBefore(lineNode, cur); |
| 669 | } else { |
| 670 | while (cur != reuse) cur = rm(cur); |
| 671 | cur = cur.nextSibling; |
| 672 | } |
| 673 | |
| 674 | lineNode.lineObj = line; |
| 675 | } |
| 676 | ++lineN; |
| 677 | }); |
| 678 | while (cur) cur = rm(cur); |
| 679 | } |
| 680 | |
| 681 | function buildLineElement(cm, line, lineNo, dims, reuse) { |
| 682 | var built = buildLineContent(cm, line), lineElement = built.pre; |
| 683 | var markers = line.gutterMarkers, display = cm.display, wrap; |
| 684 | |
| 685 | var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass; |
| 686 | if (!cm.options.lineNumbers && !markers && !bgClass && !line.wrapClass && !line.widgets) |
| 687 | return lineElement; |
| 688 | |
| 689 | // Lines with gutter elements, widgets or a background class need |
| 690 | // to be wrapped again, and have the extra elements added to the |
| 691 | // wrapper div |
| 692 | |
| 693 | if (reuse) { |
| 694 | reuse.alignable = null; |
| 695 | var isOk = true, widgetsSeen = 0, insertBefore = null; |
| 696 | for (var n = reuse.firstChild, next; n; n = next) { |
| 697 | next = n.nextSibling; |
| 698 | if (!/\bCodeMirror-linewidget\b/.test(n.className)) { |
| 699 | reuse.removeChild(n); |
| 700 | } else { |
| 701 | for (var i = 0; i < line.widgets.length; ++i) { |
| 702 | var widget = line.widgets[i]; |
| 703 | if (widget.node == n.firstChild) { |
| 704 | if (!widget.above && !insertBefore) insertBefore = n; |
| 705 | positionLineWidget(widget, n, reuse, dims); |
| 706 | ++widgetsSeen; |
| 707 | break; |
| 708 | } |
| 709 | } |
| 710 | if (i == line.widgets.length) { isOk = false; break; } |
| 711 | } |
| 712 | } |
| 713 | reuse.insertBefore(lineElement, insertBefore); |
| 714 | if (isOk && widgetsSeen == line.widgets.length) { |
| 715 | wrap = reuse; |
| 716 | reuse.className = line.wrapClass || ""; |
| 717 | } |
| 718 | } |
| 719 | if (!wrap) { |
| 720 | wrap = elt("div", null, line.wrapClass, "position: relative"); |
| 721 | wrap.appendChild(lineElement); |
| 722 | } |
| 723 | // Kludge to make sure the styled element lies behind the selection (by z-index) |
| 724 | if (bgClass) |
| 725 | wrap.insertBefore(elt("div", null, bgClass + " CodeMirror-linebackground"), wrap.firstChild); |
| 726 | if (cm.options.lineNumbers || markers) { |
| 727 | var gutterWrap = wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " + |
| 728 | (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"), |
| 729 | lineElement); |
| 730 | if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap); |
| 731 | if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) |
| 732 | wrap.lineNumber = gutterWrap.appendChild( |
| 733 | elt("div", lineNumberFor(cm.options, lineNo), |
| 734 | "CodeMirror-linenumber CodeMirror-gutter-elt", |
| 735 | "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " |
| 736 | + display.lineNumInnerWidth + "px")); |
| 737 | if (markers) |
| 738 | for (var k = 0; k < cm.options.gutters.length; ++k) { |
| 739 | var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; |
| 740 | if (found) |
| 741 | gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + |
| 742 | dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); |
| 743 | } |
| 744 | } |
| 745 | if (ie_lt8) wrap.style.zIndex = 2; |
| 746 | if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) { |
| 747 | var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); |
| 748 | if (!widget.handleMouseEvents) node.ignoreEvents = true; |
| 749 | positionLineWidget(widget, node, wrap, dims); |
| 750 | if (widget.above) |
| 751 | wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); |
| 752 | else |
| 753 | wrap.appendChild(node); |
| 754 | signalLater(widget, "redraw"); |
| 755 | } |
| 756 | return wrap; |
| 757 | } |
| 758 | |
| 759 | function positionLineWidget(widget, node, wrap, dims) { |
| 760 | if (widget.noHScroll) { |
| 761 | (wrap.alignable || (wrap.alignable = [])).push(node); |
| 762 | var width = dims.wrapperWidth; |
| 763 | node.style.left = dims.fixedPos + "px"; |
| 764 | if (!widget.coverGutter) { |
| 765 | width -= dims.gutterTotalWidth; |
| 766 | node.style.paddingLeft = dims.gutterTotalWidth + "px"; |
| 767 | } |
| 768 | node.style.width = width + "px"; |
| 769 | } |
| 770 | if (widget.coverGutter) { |
| 771 | node.style.zIndex = 5; |
| 772 | node.style.position = "relative"; |
| 773 | if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | // SELECTION / CURSOR |
| 778 | |
| 779 | function updateSelection(cm) { |
| 780 | var display = cm.display; |
| 781 | var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); |
| 782 | if (collapsed || cm.options.showCursorWhenSelecting) |
| 783 | updateSelectionCursor(cm); |
| 784 | else |
| 785 | display.cursor.style.display = display.otherCursor.style.display = "none"; |
| 786 | if (!collapsed) |
| 787 | updateSelectionRange(cm); |
| 788 | else |
| 789 | display.selectionDiv.style.display = "none"; |
| 790 | |
| 791 | // Move the hidden textarea near the cursor to prevent scrolling artifacts |
| 792 | if (cm.options.moveInputWithCursor) { |
| 793 | var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); |
| 794 | var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); |
| 795 | display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, |
| 796 | headPos.top + lineOff.top - wrapOff.top)) + "px"; |
| 797 | display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, |
| 798 | headPos.left + lineOff.left - wrapOff.left)) + "px"; |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | // No selection, plain cursor |
| 803 | function updateSelectionCursor(cm) { |
| 804 | var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); |
| 805 | display.cursor.style.left = pos.left + "px"; |
| 806 | display.cursor.style.top = pos.top + "px"; |
| 807 | display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; |
| 808 | display.cursor.style.display = ""; |
| 809 | |
| 810 | if (pos.other) { |
| 811 | display.otherCursor.style.display = ""; |
| 812 | display.otherCursor.style.left = pos.other.left + "px"; |
| 813 | display.otherCursor.style.top = pos.other.top + "px"; |
| 814 | display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; |
| 815 | } else { display.otherCursor.style.display = "none"; } |
| 816 | } |
| 817 | |
| 818 | // Highlight selection |
| 819 | function updateSelectionRange(cm) { |
| 820 | var display = cm.display, doc = cm.doc, sel = cm.doc.sel; |
| 821 | var fragment = document.createDocumentFragment(); |
| 822 | var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); |
| 823 | |
| 824 | function add(left, top, width, bottom) { |
| 825 | if (top < 0) top = 0; |
| 826 | fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + |
| 827 | "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + |
| 828 | "px; height: " + (bottom - top) + "px")); |
| 829 | } |
| 830 | |
| 831 | function drawForLine(line, fromArg, toArg) { |
| 832 | var lineObj = getLine(doc, line); |
| 833 | var lineLen = lineObj.text.length; |
| 834 | var start, end; |
| 835 | function coords(ch, bias) { |
| 836 | return charCoords(cm, Pos(line, ch), "div", lineObj, bias); |
| 837 | } |
| 838 | |
| 839 | iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { |
| 840 | var leftPos = coords(from, "left"), rightPos, left, right; |
| 841 | if (from == to) { |
| 842 | rightPos = leftPos; |
| 843 | left = right = leftPos.left; |
| 844 | } else { |
| 845 | rightPos = coords(to - 1, "right"); |
| 846 | if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } |
| 847 | left = leftPos.left; |
| 848 | right = rightPos.right; |
| 849 | } |
| 850 | if (fromArg == null && from == 0) left = pl; |
| 851 | if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part |
| 852 | add(left, leftPos.top, null, leftPos.bottom); |
| 853 | left = pl; |
| 854 | if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); |
| 855 | } |
| 856 | if (toArg == null && to == lineLen) right = clientWidth; |
| 857 | if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) |
| 858 | start = leftPos; |
| 859 | if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) |
| 860 | end = rightPos; |
| 861 | if (left < pl + 1) left = pl; |
| 862 | add(left, rightPos.top, right - left, rightPos.bottom); |
| 863 | }); |
| 864 | return {start: start, end: end}; |
| 865 | } |
| 866 | |
| 867 | if (sel.from.line == sel.to.line) { |
| 868 | drawForLine(sel.from.line, sel.from.ch, sel.to.ch); |
| 869 | } else { |
| 870 | var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line); |
| 871 | var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine); |
| 872 | var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end; |
| 873 | var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start; |
| 874 | if (singleVLine) { |
| 875 | if (leftEnd.top < rightStart.top - 2) { |
| 876 | add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); |
| 877 | add(pl, rightStart.top, rightStart.left, rightStart.bottom); |
| 878 | } else { |
| 879 | add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); |
| 880 | } |
| 881 | } |
| 882 | if (leftEnd.bottom < rightStart.top) |
| 883 | add(pl, leftEnd.bottom, null, rightStart.top); |
| 884 | } |
| 885 | |
| 886 | removeChildrenAndAdd(display.selectionDiv, fragment); |
| 887 | display.selectionDiv.style.display = ""; |
| 888 | } |
| 889 | |
| 890 | // Cursor-blinking |
| 891 | function restartBlink(cm) { |
| 892 | if (!cm.state.focused) return; |
| 893 | var display = cm.display; |
| 894 | clearInterval(display.blinker); |
| 895 | var on = true; |
| 896 | display.cursor.style.visibility = display.otherCursor.style.visibility = ""; |
| 897 | if (cm.options.cursorBlinkRate > 0) |
| 898 | display.blinker = setInterval(function() { |
| 899 | display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; |
| 900 | }, cm.options.cursorBlinkRate); |
| 901 | } |
| 902 | |
| 903 | // HIGHLIGHT WORKER |
| 904 | |
| 905 | function startWorker(cm, time) { |
| 906 | if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) |
| 907 | cm.state.highlight.set(time, bind(highlightWorker, cm)); |
| 908 | } |
| 909 | |
| 910 | function highlightWorker(cm) { |
| 911 | var doc = cm.doc; |
| 912 | if (doc.frontier < doc.first) doc.frontier = doc.first; |
| 913 | if (doc.frontier >= cm.display.showingTo) return; |
| 914 | var end = +new Date + cm.options.workTime; |
| 915 | var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); |
| 916 | var changed = [], prevChange; |
| 917 | doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { |
| 918 | if (doc.frontier >= cm.display.showingFrom) { // Visible |
| 919 | var oldStyles = line.styles; |
| 920 | line.styles = highlightLine(cm, line, state, true); |
| 921 | var ischange = !oldStyles || oldStyles.length != line.styles.length; |
| 922 | for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; |
| 923 | if (ischange) { |
| 924 | if (prevChange && prevChange.end == doc.frontier) prevChange.end++; |
| 925 | else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1}); |
| 926 | } |
| 927 | line.stateAfter = copyState(doc.mode, state); |
| 928 | } else { |
| 929 | processLine(cm, line.text, state); |
| 930 | line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; |
| 931 | } |
| 932 | ++doc.frontier; |
| 933 | if (+new Date > end) { |
| 934 | startWorker(cm, cm.options.workDelay); |
| 935 | return true; |
| 936 | } |
| 937 | }); |
| 938 | if (changed.length) |
| 939 | operation(cm, function() { |
| 940 | for (var i = 0; i < changed.length; ++i) |
| 941 | regChange(this, changed[i].start, changed[i].end); |
| 942 | })(); |
| 943 | } |
| 944 | |
| 945 | // Finds the line to start with when starting a parse. Tries to |
| 946 | // find a line with a stateAfter, so that it can start with a |
| 947 | // valid state. If that fails, it returns the line with the |
| 948 | // smallest indentation, which tends to need the least context to |
| 949 | // parse correctly. |
| 950 | function findStartLine(cm, n, precise) { |
| 951 | var minindent, minline, doc = cm.doc; |
| 952 | var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); |
| 953 | for (var search = n; search > lim; --search) { |
| 954 | if (search <= doc.first) return doc.first; |
| 955 | var line = getLine(doc, search - 1); |
| 956 | if (line.stateAfter && (!precise || search <= doc.frontier)) return search; |
| 957 | var indented = countColumn(line.text, null, cm.options.tabSize); |
| 958 | if (minline == null || minindent > indented) { |
| 959 | minline = search - 1; |
| 960 | minindent = indented; |
| 961 | } |
| 962 | } |
| 963 | return minline; |
| 964 | } |
| 965 | |
| 966 | function getStateBefore(cm, n, precise) { |
| 967 | var doc = cm.doc, display = cm.display; |
| 968 | if (!doc.mode.startState) return true; |
| 969 | var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; |
| 970 | if (!state) state = startState(doc.mode); |
| 971 | else state = copyState(doc.mode, state); |
| 972 | doc.iter(pos, n, function(line) { |
| 973 | processLine(cm, line.text, state); |
| 974 | var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; |
| 975 | line.stateAfter = save ? copyState(doc.mode, state) : null; |
| 976 | ++pos; |
| 977 | }); |
| 978 | if (precise) doc.frontier = pos; |
| 979 | return state; |
| 980 | } |
| 981 | |
| 982 | // POSITION MEASUREMENT |
| 983 | |
| 984 | function paddingTop(display) {return display.lineSpace.offsetTop;} |
| 985 | function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} |
| 986 | function paddingLeft(display) { |
| 987 | var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); |
| 988 | return e.offsetLeft; |
| 989 | } |
| 990 | |
| 991 | function measureChar(cm, line, ch, data, bias) { |
| 992 | var dir = -1; |
| 993 | data = data || measureLine(cm, line); |
| 994 | if (data.crude) { |
| 995 | var left = data.left + ch * data.width; |
| 996 | return {left: left, right: left + data.width, top: data.top, bottom: data.bottom}; |
| 997 | } |
| 998 | |
| 999 | for (var pos = ch;; pos += dir) { |
| 1000 | var r = data[pos]; |
| 1001 | if (r) break; |
| 1002 | if (dir < 0 && pos == 0) dir = 1; |
| 1003 | } |
| 1004 | bias = pos > ch ? "left" : pos < ch ? "right" : bias; |
| 1005 | if (bias == "left" && r.leftSide) r = r.leftSide; |
| 1006 | else if (bias == "right" && r.rightSide) r = r.rightSide; |
| 1007 | return {left: pos < ch ? r.right : r.left, |
| 1008 | right: pos > ch ? r.left : r.right, |
| 1009 | top: r.top, |
| 1010 | bottom: r.bottom}; |
| 1011 | } |
| 1012 | |
| 1013 | function findCachedMeasurement(cm, line) { |
| 1014 | var cache = cm.display.measureLineCache; |
| 1015 | for (var i = 0; i < cache.length; ++i) { |
| 1016 | var memo = cache[i]; |
| 1017 | if (memo.text == line.text && memo.markedSpans == line.markedSpans && |
| 1018 | cm.display.scroller.clientWidth == memo.width && |
| 1019 | memo.classes == line.textClass + "|" + line.wrapClass) |
| 1020 | return memo; |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | function clearCachedMeasurement(cm, line) { |
| 1025 | var exists = findCachedMeasurement(cm, line); |
| 1026 | if (exists) exists.text = exists.measure = exists.markedSpans = null; |
| 1027 | } |
| 1028 | |
| 1029 | function measureLine(cm, line) { |
| 1030 | // First look in the cache |
| 1031 | var cached = findCachedMeasurement(cm, line); |
| 1032 | if (cached) return cached.measure; |
| 1033 | |
| 1034 | // Failing that, recompute and store result in cache |
| 1035 | var measure = measureLineInner(cm, line); |
| 1036 | var cache = cm.display.measureLineCache; |
| 1037 | var memo = {text: line.text, width: cm.display.scroller.clientWidth, |
| 1038 | markedSpans: line.markedSpans, measure: measure, |
| 1039 | classes: line.textClass + "|" + line.wrapClass}; |
| 1040 | if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo; |
| 1041 | else cache.push(memo); |
| 1042 | return measure; |
| 1043 | } |
| 1044 | |
| 1045 | function measureLineInner(cm, line) { |
| 1046 | if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom) |
| 1047 | return crudelyMeasureLine(cm, line); |
| 1048 | |
| 1049 | var display = cm.display, measure = emptyArray(line.text.length); |
| 1050 | var pre = buildLineContent(cm, line, measure, true).pre; |
| 1051 | |
| 1052 | // IE does not cache element positions of inline elements between |
| 1053 | // calls to getBoundingClientRect. This makes the loop below, |
| 1054 | // which gathers the positions of all the characters on the line, |
| 1055 | // do an amount of layout work quadratic to the number of |
| 1056 | // characters. When line wrapping is off, we try to improve things |
| 1057 | // by first subdividing the line into a bunch of inline blocks, so |
| 1058 | // that IE can reuse most of the layout information from caches |
| 1059 | // for those blocks. This does interfere with line wrapping, so it |
| 1060 | // doesn't work when wrapping is on, but in that case the |
| 1061 | // situation is slightly better, since IE does cache line-wrapping |
| 1062 | // information and only recomputes per-line. |
| 1063 | if (old_ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { |
| 1064 | var fragment = document.createDocumentFragment(); |
| 1065 | var chunk = 10, n = pre.childNodes.length; |
| 1066 | for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { |
| 1067 | var wrap = elt("div", null, null, "display: inline-block"); |
| 1068 | for (var j = 0; j < chunk && n; ++j) { |
| 1069 | wrap.appendChild(pre.firstChild); |
| 1070 | --n; |
| 1071 | } |
| 1072 | fragment.appendChild(wrap); |
| 1073 | } |
| 1074 | pre.appendChild(fragment); |
| 1075 | } |
| 1076 | |
| 1077 | removeChildrenAndAdd(display.measure, pre); |
| 1078 | |
| 1079 | var outer = getRect(display.lineDiv); |
| 1080 | var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; |
| 1081 | // Work around an IE7/8 bug where it will sometimes have randomly |
| 1082 | // replaced our pre with a clone at this point. |
| 1083 | if (ie_lt9 && display.measure.first != pre) |
| 1084 | removeChildrenAndAdd(display.measure, pre); |
| 1085 | |
| 1086 | function measureRect(rect) { |
| 1087 | var top = rect.top - outer.top, bot = rect.bottom - outer.top; |
| 1088 | if (bot > maxBot) bot = maxBot; |
| 1089 | if (top < 0) top = 0; |
| 1090 | for (var i = vranges.length - 2; i >= 0; i -= 2) { |
| 1091 | var rtop = vranges[i], rbot = vranges[i+1]; |
| 1092 | if (rtop > bot || rbot < top) continue; |
| 1093 | if (rtop <= top && rbot >= bot || |
| 1094 | top <= rtop && bot >= rbot || |
| 1095 | Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { |
| 1096 | vranges[i] = Math.min(top, rtop); |
| 1097 | vranges[i+1] = Math.max(bot, rbot); |
| 1098 | break; |
| 1099 | } |
| 1100 | } |
| 1101 | if (i < 0) { i = vranges.length; vranges.push(top, bot); } |
| 1102 | return {left: rect.left - outer.left, |
| 1103 | right: rect.right - outer.left, |
| 1104 | top: i, bottom: null}; |
| 1105 | } |
| 1106 | function finishRect(rect) { |
| 1107 | rect.bottom = vranges[rect.top+1]; |
| 1108 | rect.top = vranges[rect.top]; |
| 1109 | } |
| 1110 | |
| 1111 | for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { |
| 1112 | var node = cur, rect = null; |
| 1113 | // A widget might wrap, needs special care |
| 1114 | if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) { |
| 1115 | if (cur.firstChild.nodeType == 1) node = cur.firstChild; |
| 1116 | var rects = node.getClientRects(); |
| 1117 | if (rects.length > 1) { |
| 1118 | rect = data[i] = measureRect(rects[0]); |
| 1119 | rect.rightSide = measureRect(rects[rects.length - 1]); |
| 1120 | } |
| 1121 | } |
| 1122 | if (!rect) rect = data[i] = measureRect(getRect(node)); |
| 1123 | if (cur.measureRight) rect.right = getRect(cur.measureRight).left - outer.left; |
| 1124 | if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide)); |
| 1125 | } |
| 1126 | removeChildren(cm.display.measure); |
| 1127 | for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { |
| 1128 | finishRect(cur); |
| 1129 | if (cur.leftSide) finishRect(cur.leftSide); |
| 1130 | if (cur.rightSide) finishRect(cur.rightSide); |
| 1131 | } |
| 1132 | return data; |
| 1133 | } |
| 1134 | |
| 1135 | function crudelyMeasureLine(cm, line) { |
| 1136 | var copy = new Line(line.text.slice(0, 100), null); |
| 1137 | if (line.textClass) copy.textClass = line.textClass; |
| 1138 | var measure = measureLineInner(cm, copy); |
| 1139 | var left = measureChar(cm, copy, 0, measure, "left"); |
| 1140 | var right = measureChar(cm, copy, 99, measure, "right"); |
| 1141 | return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100}; |
| 1142 | } |
| 1143 | |
| 1144 | function measureLineWidth(cm, line) { |
| 1145 | var hasBadSpan = false; |
| 1146 | if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) { |
| 1147 | var sp = line.markedSpans[i]; |
| 1148 | if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true; |
| 1149 | } |
| 1150 | var cached = !hasBadSpan && findCachedMeasurement(cm, line); |
| 1151 | if (cached || line.text.length >= cm.options.crudeMeasuringFrom) |
| 1152 | return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right; |
| 1153 | |
| 1154 | var pre = buildLineContent(cm, line, null, true).pre; |
| 1155 | var end = pre.appendChild(zeroWidthElement(cm.display.measure)); |
| 1156 | removeChildrenAndAdd(cm.display.measure, pre); |
| 1157 | return getRect(end).right - getRect(cm.display.lineDiv).left; |
| 1158 | } |
| 1159 | |
| 1160 | function clearCaches(cm) { |
| 1161 | cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; |
| 1162 | cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; |
| 1163 | if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; |
| 1164 | cm.display.lineNumChars = null; |
| 1165 | } |
| 1166 | |
| 1167 | function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } |
| 1168 | function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } |
| 1169 | |
| 1170 | // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page" |
| 1171 | function intoCoordSystem(cm, lineObj, rect, context) { |
| 1172 | if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { |
| 1173 | var size = widgetHeight(lineObj.widgets[i]); |
| 1174 | rect.top += size; rect.bottom += size; |
| 1175 | } |
| 1176 | if (context == "line") return rect; |
| 1177 | if (!context) context = "local"; |
| 1178 | var yOff = heightAtLine(cm, lineObj); |
| 1179 | if (context == "local") yOff += paddingTop(cm.display); |
| 1180 | else yOff -= cm.display.viewOffset; |
| 1181 | if (context == "page" || context == "window") { |
| 1182 | var lOff = getRect(cm.display.lineSpace); |
| 1183 | yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); |
| 1184 | var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); |
| 1185 | rect.left += xOff; rect.right += xOff; |
| 1186 | } |
| 1187 | rect.top += yOff; rect.bottom += yOff; |
| 1188 | return rect; |
| 1189 | } |
| 1190 | |
| 1191 | // Context may be "window", "page", "div", or "local"/null |
| 1192 | // Result is in "div" coords |
| 1193 | function fromCoordSystem(cm, coords, context) { |
| 1194 | if (context == "div") return coords; |
| 1195 | var left = coords.left, top = coords.top; |
| 1196 | // First move into "page" coordinate system |
| 1197 | if (context == "page") { |
| 1198 | left -= pageScrollX(); |
| 1199 | top -= pageScrollY(); |
| 1200 | } else if (context == "local" || !context) { |
| 1201 | var localBox = getRect(cm.display.sizer); |
| 1202 | left += localBox.left; |
| 1203 | top += localBox.top; |
| 1204 | } |
| 1205 | |
| 1206 | var lineSpaceBox = getRect(cm.display.lineSpace); |
| 1207 | return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; |
| 1208 | } |
| 1209 | |
| 1210 | function charCoords(cm, pos, context, lineObj, bias) { |
| 1211 | if (!lineObj) lineObj = getLine(cm.doc, pos.line); |
| 1212 | return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context); |
| 1213 | } |
| 1214 | |
| 1215 | function cursorCoords(cm, pos, context, lineObj, measurement) { |
| 1216 | lineObj = lineObj || getLine(cm.doc, pos.line); |
| 1217 | if (!measurement) measurement = measureLine(cm, lineObj); |
| 1218 | function get(ch, right) { |
| 1219 | var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left"); |
| 1220 | if (right) m.left = m.right; else m.right = m.left; |
| 1221 | return intoCoordSystem(cm, lineObj, m, context); |
| 1222 | } |
| 1223 | function getBidi(ch, partPos) { |
| 1224 | var part = order[partPos], right = part.level % 2; |
| 1225 | if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { |
| 1226 | part = order[--partPos]; |
| 1227 | ch = bidiRight(part) - (part.level % 2 ? 0 : 1); |
| 1228 | right = true; |
| 1229 | } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { |
| 1230 | part = order[++partPos]; |
| 1231 | ch = bidiLeft(part) - part.level % 2; |
| 1232 | right = false; |
| 1233 | } |
| 1234 | if (right && ch == part.to && ch > part.from) return get(ch - 1); |
| 1235 | return get(ch, right); |
| 1236 | } |
| 1237 | var order = getOrder(lineObj), ch = pos.ch; |
| 1238 | if (!order) return get(ch); |
| 1239 | var partPos = getBidiPartAt(order, ch); |
| 1240 | var val = getBidi(ch, partPos); |
| 1241 | if (bidiOther != null) val.other = getBidi(ch, bidiOther); |
| 1242 | return val; |
| 1243 | } |
| 1244 | |
| 1245 | function PosWithInfo(line, ch, outside, xRel) { |
| 1246 | var pos = new Pos(line, ch); |
| 1247 | pos.xRel = xRel; |
| 1248 | if (outside) pos.outside = true; |
| 1249 | return pos; |
| 1250 | } |
| 1251 | |
| 1252 | // Coords must be lineSpace-local |
| 1253 | function coordsChar(cm, x, y) { |
| 1254 | var doc = cm.doc; |
| 1255 | y += cm.display.viewOffset; |
| 1256 | if (y < 0) return PosWithInfo(doc.first, 0, true, -1); |
| 1257 | var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; |
| 1258 | if (lineNo > last) |
| 1259 | return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); |
| 1260 | if (x < 0) x = 0; |
| 1261 | |
| 1262 | for (;;) { |
| 1263 | var lineObj = getLine(doc, lineNo); |
| 1264 | var found = coordsCharInner(cm, lineObj, lineNo, x, y); |
| 1265 | var merged = collapsedSpanAtEnd(lineObj); |
| 1266 | var mergedPos = merged && merged.find(); |
| 1267 | if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) |
| 1268 | lineNo = mergedPos.to.line; |
| 1269 | else |
| 1270 | return found; |
| 1271 | } |
| 1272 | } |
| 1273 | |
| 1274 | function coordsCharInner(cm, lineObj, lineNo, x, y) { |
| 1275 | var innerOff = y - heightAtLine(cm, lineObj); |
| 1276 | var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; |
| 1277 | var measurement = measureLine(cm, lineObj); |
| 1278 | |
| 1279 | function getX(ch) { |
| 1280 | var sp = cursorCoords(cm, Pos(lineNo, ch), "line", |
| 1281 | lineObj, measurement); |
| 1282 | wrongLine = true; |
| 1283 | if (innerOff > sp.bottom) return sp.left - adjust; |
| 1284 | else if (innerOff < sp.top) return sp.left + adjust; |
| 1285 | else wrongLine = false; |
| 1286 | return sp.left; |
| 1287 | } |
| 1288 | |
| 1289 | var bidi = getOrder(lineObj), dist = lineObj.text.length; |
| 1290 | var from = lineLeft(lineObj), to = lineRight(lineObj); |
| 1291 | var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; |
| 1292 | |
| 1293 | if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); |
| 1294 | // Do a binary search between these bounds. |
| 1295 | for (;;) { |
| 1296 | if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { |
| 1297 | var ch = x < fromX || x - fromX <= toX - x ? from : to; |
| 1298 | var xDiff = x - (ch == from ? fromX : toX); |
| 1299 | while (isExtendingChar(lineObj.text.charAt(ch))) ++ch; |
| 1300 | var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, |
| 1301 | xDiff < 0 ? -1 : xDiff ? 1 : 0); |
| 1302 | return pos; |
| 1303 | } |
| 1304 | var step = Math.ceil(dist / 2), middle = from + step; |
| 1305 | if (bidi) { |
| 1306 | middle = from; |
| 1307 | for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); |
| 1308 | } |
| 1309 | var middleX = getX(middle); |
| 1310 | if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} |
| 1311 | else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} |
| 1312 | } |
| 1313 | } |
| 1314 | |
| 1315 | var measureText; |
| 1316 | function textHeight(display) { |
| 1317 | if (display.cachedTextHeight != null) return display.cachedTextHeight; |
| 1318 | if (measureText == null) { |
| 1319 | measureText = elt("pre"); |
| 1320 | // Measure a bunch of lines, for browsers that compute |
| 1321 | // fractional heights. |
| 1322 | for (var i = 0; i < 49; ++i) { |
| 1323 | measureText.appendChild(document.createTextNode("x")); |
| 1324 | measureText.appendChild(elt("br")); |
| 1325 | } |
| 1326 | measureText.appendChild(document.createTextNode("x")); |
| 1327 | } |
| 1328 | removeChildrenAndAdd(display.measure, measureText); |
| 1329 | var height = measureText.offsetHeight / 50; |
| 1330 | if (height > 3) display.cachedTextHeight = height; |
| 1331 | removeChildren(display.measure); |
| 1332 | return height || 1; |
| 1333 | } |
| 1334 | |
| 1335 | function charWidth(display) { |
| 1336 | if (display.cachedCharWidth != null) return display.cachedCharWidth; |
| 1337 | var anchor = elt("span", "x"); |
| 1338 | var pre = elt("pre", [anchor]); |
| 1339 | removeChildrenAndAdd(display.measure, pre); |
| 1340 | var width = anchor.offsetWidth; |
| 1341 | if (width > 2) display.cachedCharWidth = width; |
| 1342 | return width || 10; |
| 1343 | } |
| 1344 | |
| 1345 | // OPERATIONS |
| 1346 | |
| 1347 | // Operations are used to wrap changes in such a way that each |
| 1348 | // change won't have to update the cursor and display (which would |
| 1349 | // be awkward, slow, and error-prone), but instead updates are |
| 1350 | // batched and then all combined and executed at once. |
| 1351 | |
| 1352 | var nextOpId = 0; |
| 1353 | function startOperation(cm) { |
| 1354 | cm.curOp = { |
| 1355 | // An array of ranges of lines that have to be updated. See |
| 1356 | // updateDisplay. |
| 1357 | changes: [], |
| 1358 | forceUpdate: false, |
| 1359 | updateInput: null, |
| 1360 | userSelChange: null, |
| 1361 | textChanged: null, |
| 1362 | selectionChanged: false, |
| 1363 | cursorActivity: false, |
| 1364 | updateMaxLine: false, |
| 1365 | updateScrollPos: false, |
| 1366 | id: ++nextOpId |
| 1367 | }; |
| 1368 | if (!delayedCallbackDepth++) delayedCallbacks = []; |
| 1369 | } |
| 1370 | |
| 1371 | function endOperation(cm) { |
| 1372 | var op = cm.curOp, doc = cm.doc, display = cm.display; |
| 1373 | cm.curOp = null; |
| 1374 | |
| 1375 | if (op.updateMaxLine) computeMaxLength(cm); |
| 1376 | if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { |
| 1377 | var width = measureLineWidth(cm, display.maxLine); |
| 1378 | display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; |
| 1379 | display.maxLineChanged = false; |
| 1380 | var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); |
| 1381 | if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) |
| 1382 | setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); |
| 1383 | } |
| 1384 | var newScrollPos, updated; |
| 1385 | if (op.updateScrollPos) { |
| 1386 | newScrollPos = op.updateScrollPos; |
| 1387 | } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible |
| 1388 | var coords = cursorCoords(cm, doc.sel.head); |
| 1389 | newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); |
| 1390 | } |
| 1391 | if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) { |
| 1392 | updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate); |
| 1393 | if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop; |
| 1394 | } |
| 1395 | if (!updated && op.selectionChanged) updateSelection(cm); |
| 1396 | if (op.updateScrollPos) { |
| 1397 | var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, newScrollPos.scrollTop)); |
| 1398 | var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, newScrollPos.scrollLeft)); |
| 1399 | display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top; |
| 1400 | display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left; |
| 1401 | alignHorizontally(cm); |
| 1402 | if (op.scrollToPos) |
| 1403 | scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from), |
| 1404 | clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin); |
| 1405 | } else if (newScrollPos) { |
| 1406 | scrollCursorIntoView(cm); |
| 1407 | } |
| 1408 | if (op.selectionChanged) restartBlink(cm); |
| 1409 | |
| 1410 | if (cm.state.focused && op.updateInput) |
| 1411 | resetInput(cm, op.userSelChange); |
| 1412 | |
| 1413 | var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; |
| 1414 | if (hidden) for (var i = 0; i < hidden.length; ++i) |
| 1415 | if (!hidden[i].lines.length) signal(hidden[i], "hide"); |
| 1416 | if (unhidden) for (var i = 0; i < unhidden.length; ++i) |
| 1417 | if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); |
| 1418 | |
| 1419 | var delayed; |
| 1420 | if (!--delayedCallbackDepth) { |
| 1421 | delayed = delayedCallbacks; |
| 1422 | delayedCallbacks = null; |
| 1423 | } |
| 1424 | if (op.textChanged) |
| 1425 | signal(cm, "change", cm, op.textChanged); |
| 1426 | if (op.cursorActivity) signal(cm, "cursorActivity", cm); |
| 1427 | if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i](); |
| 1428 | } |
| 1429 | |
| 1430 | // Wraps a function in an operation. Returns the wrapped function. |
| 1431 | function operation(cm1, f) { |
| 1432 | return function() { |
| 1433 | var cm = cm1 || this, withOp = !cm.curOp; |
| 1434 | if (withOp) startOperation(cm); |
| 1435 | try { var result = f.apply(cm, arguments); } |
| 1436 | finally { if (withOp) endOperation(cm); } |
| 1437 | return result; |
| 1438 | }; |
| 1439 | } |
| 1440 | function docOperation(f) { |
| 1441 | return function() { |
| 1442 | var withOp = this.cm && !this.cm.curOp, result; |
| 1443 | if (withOp) startOperation(this.cm); |
| 1444 | try { result = f.apply(this, arguments); } |
| 1445 | finally { if (withOp) endOperation(this.cm); } |
| 1446 | return result; |
| 1447 | }; |
| 1448 | } |
| 1449 | function runInOp(cm, f) { |
| 1450 | var withOp = !cm.curOp, result; |
| 1451 | if (withOp) startOperation(cm); |
| 1452 | try { result = f(); } |
| 1453 | finally { if (withOp) endOperation(cm); } |
| 1454 | return result; |
| 1455 | } |
| 1456 | |
| 1457 | function regChange(cm, from, to, lendiff) { |
| 1458 | if (from == null) from = cm.doc.first; |
| 1459 | if (to == null) to = cm.doc.first + cm.doc.size; |
| 1460 | cm.curOp.changes.push({from: from, to: to, diff: lendiff}); |
| 1461 | } |
| 1462 | |
| 1463 | // INPUT HANDLING |
| 1464 | |
| 1465 | function slowPoll(cm) { |
| 1466 | if (cm.display.pollingFast) return; |
| 1467 | cm.display.poll.set(cm.options.pollInterval, function() { |
| 1468 | readInput(cm); |
| 1469 | if (cm.state.focused) slowPoll(cm); |
| 1470 | }); |
| 1471 | } |
| 1472 | |
| 1473 | function fastPoll(cm) { |
| 1474 | var missed = false; |
| 1475 | cm.display.pollingFast = true; |
| 1476 | function p() { |
| 1477 | var changed = readInput(cm); |
| 1478 | if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} |
| 1479 | else {cm.display.pollingFast = false; slowPoll(cm);} |
| 1480 | } |
| 1481 | cm.display.poll.set(20, p); |
| 1482 | } |
| 1483 | |
| 1484 | // prevInput is a hack to work with IME. If we reset the textarea |
| 1485 | // on every change, that breaks IME. So we look for changes |
| 1486 | // compared to the previous content instead. (Modern browsers have |
| 1487 | // events that indicate IME taking place, but these are not widely |
| 1488 | // supported or compatible enough yet to rely on.) |
| 1489 | function readInput(cm) { |
| 1490 | var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; |
| 1491 | if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.options.disableInput) return false; |
| 1492 | if (cm.state.pasteIncoming && cm.state.fakedLastChar) { |
| 1493 | input.value = input.value.substring(0, input.value.length - 1); |
| 1494 | cm.state.fakedLastChar = false; |
| 1495 | } |
| 1496 | var text = input.value; |
| 1497 | if (text == prevInput && posEq(sel.from, sel.to)) return false; |
| 1498 | if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { |
| 1499 | resetInput(cm, true); |
| 1500 | return false; |
| 1501 | } |
| 1502 | |
| 1503 | var withOp = !cm.curOp; |
| 1504 | if (withOp) startOperation(cm); |
| 1505 | sel.shift = false; |
| 1506 | var same = 0, l = Math.min(prevInput.length, text.length); |
| 1507 | while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; |
| 1508 | var from = sel.from, to = sel.to; |
| 1509 | var inserted = text.slice(same); |
| 1510 | if (same < prevInput.length) |
| 1511 | from = Pos(from.line, from.ch - (prevInput.length - same)); |
| 1512 | else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) |
| 1513 | to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + inserted.length)); |
| 1514 | |
| 1515 | var updateInput = cm.curOp.updateInput; |
| 1516 | var changeEvent = {from: from, to: to, text: splitLines(inserted), |
| 1517 | origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"}; |
| 1518 | makeChange(cm.doc, changeEvent, "end"); |
| 1519 | cm.curOp.updateInput = updateInput; |
| 1520 | signalLater(cm, "inputRead", cm, changeEvent); |
| 1521 | if (inserted && !cm.state.pasteIncoming && cm.options.electricChars && |
| 1522 | cm.options.smartIndent && sel.head.ch < 100) { |
| 1523 | var electric = cm.getModeAt(sel.head).electricChars; |
| 1524 | if (electric) for (var i = 0; i < electric.length; i++) |
| 1525 | if (inserted.indexOf(electric.charAt(i)) > -1) { |
| 1526 | indentLine(cm, sel.head.line, "smart"); |
| 1527 | break; |
| 1528 | } |
| 1529 | } |
| 1530 | |
| 1531 | if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; |
| 1532 | else cm.display.prevInput = text; |
| 1533 | if (withOp) endOperation(cm); |
| 1534 | cm.state.pasteIncoming = cm.state.cutIncoming = false; |
| 1535 | return true; |
| 1536 | } |
| 1537 | |
| 1538 | function resetInput(cm, user) { |
| 1539 | var minimal, selected, doc = cm.doc; |
| 1540 | if (!posEq(doc.sel.from, doc.sel.to)) { |
| 1541 | cm.display.prevInput = ""; |
| 1542 | minimal = hasCopyEvent && |
| 1543 | (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); |
| 1544 | var content = minimal ? "-" : selected || cm.getSelection(); |
| 1545 | cm.display.input.value = content; |
| 1546 | if (cm.state.focused) selectInput(cm.display.input); |
| 1547 | if (ie && !ie_lt9) cm.display.inputHasSelection = content; |
| 1548 | } else if (user) { |
| 1549 | cm.display.prevInput = cm.display.input.value = ""; |
| 1550 | if (ie && !ie_lt9) cm.display.inputHasSelection = null; |
| 1551 | } |
| 1552 | cm.display.inaccurateSelection = minimal; |
| 1553 | } |
| 1554 | |
| 1555 | function focusInput(cm) { |
| 1556 | if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) |
| 1557 | cm.display.input.focus(); |
| 1558 | } |
| 1559 | |
| 1560 | function isReadOnly(cm) { |
| 1561 | return cm.options.readOnly || cm.doc.cantEdit; |
| 1562 | } |
| 1563 | |
| 1564 | // EVENT HANDLERS |
| 1565 | |
| 1566 | function registerEventHandlers(cm) { |
| 1567 | var d = cm.display; |
| 1568 | on(d.scroller, "mousedown", operation(cm, onMouseDown)); |
| 1569 | if (old_ie) |
| 1570 | on(d.scroller, "dblclick", operation(cm, function(e) { |
| 1571 | if (signalDOMEvent(cm, e)) return; |
| 1572 | var pos = posFromMouse(cm, e); |
| 1573 | if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; |
| 1574 | e_preventDefault(e); |
| 1575 | var word = findWordAt(getLine(cm.doc, pos.line).text, pos); |
| 1576 | extendSelection(cm.doc, word.from, word.to); |
| 1577 | })); |
| 1578 | else |
| 1579 | on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); |
| 1580 | on(d.lineSpace, "selectstart", function(e) { |
| 1581 | if (!eventInWidget(d, e)) e_preventDefault(e); |
| 1582 | }); |
| 1583 | // Gecko browsers fire contextmenu *after* opening the menu, at |
| 1584 | // which point we can't mess with it anymore. Context menu is |
| 1585 | // handled in onMouseDown for Gecko. |
| 1586 | if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); |
| 1587 | |
| 1588 | on(d.scroller, "scroll", function() { |
| 1589 | if (d.scroller.clientHeight) { |
| 1590 | setScrollTop(cm, d.scroller.scrollTop); |
| 1591 | setScrollLeft(cm, d.scroller.scrollLeft, true); |
| 1592 | signal(cm, "scroll", cm); |
| 1593 | } |
| 1594 | }); |
| 1595 | on(d.scrollbarV, "scroll", function() { |
| 1596 | if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); |
| 1597 | }); |
| 1598 | on(d.scrollbarH, "scroll", function() { |
| 1599 | if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); |
| 1600 | }); |
| 1601 | |
| 1602 | on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); |
| 1603 | on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); |
| 1604 | |
| 1605 | function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } |
| 1606 | on(d.scrollbarH, "mousedown", reFocus); |
| 1607 | on(d.scrollbarV, "mousedown", reFocus); |
| 1608 | // Prevent wrapper from ever scrolling |
| 1609 | on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); |
| 1610 | |
| 1611 | var resizeTimer; |
| 1612 | function onResize() { |
| 1613 | if (resizeTimer == null) resizeTimer = setTimeout(function() { |
| 1614 | resizeTimer = null; |
| 1615 | // Might be a text scaling operation, clear size caches. |
| 1616 | d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null; |
| 1617 | clearCaches(cm); |
| 1618 | runInOp(cm, bind(regChange, cm)); |
| 1619 | }, 100); |
| 1620 | } |
| 1621 | on(window, "resize", onResize); |
| 1622 | // Above handler holds on to the editor and its data structures. |
| 1623 | // Here we poll to unregister it when the editor is no longer in |
| 1624 | // the document, so that it can be garbage-collected. |
| 1625 | function unregister() { |
| 1626 | for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {} |
| 1627 | if (p) setTimeout(unregister, 5000); |
| 1628 | else off(window, "resize", onResize); |
| 1629 | } |
| 1630 | setTimeout(unregister, 5000); |
| 1631 | |
| 1632 | on(d.input, "keyup", operation(cm, onKeyUp)); |
| 1633 | on(d.input, "input", function() { |
| 1634 | if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null; |
| 1635 | fastPoll(cm); |
| 1636 | }); |
| 1637 | on(d.input, "keydown", operation(cm, onKeyDown)); |
| 1638 | on(d.input, "keypress", operation(cm, onKeyPress)); |
| 1639 | on(d.input, "focus", bind(onFocus, cm)); |
| 1640 | on(d.input, "blur", bind(onBlur, cm)); |
| 1641 | |
| 1642 | function drag_(e) { |
| 1643 | if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; |
| 1644 | e_stop(e); |
| 1645 | } |
| 1646 | if (cm.options.dragDrop) { |
| 1647 | on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); |
| 1648 | on(d.scroller, "dragenter", drag_); |
| 1649 | on(d.scroller, "dragover", drag_); |
| 1650 | on(d.scroller, "drop", operation(cm, onDrop)); |
| 1651 | } |
| 1652 | on(d.scroller, "paste", function(e) { |
| 1653 | if (eventInWidget(d, e)) return; |
| 1654 | focusInput(cm); |
| 1655 | fastPoll(cm); |
| 1656 | }); |
| 1657 | on(d.input, "paste", function() { |
| 1658 | // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206 |
| 1659 | // Add a char to the end of textarea before paste occur so that |
| 1660 | // selection doesn't span to the end of textarea. |
| 1661 | if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) { |
| 1662 | var start = d.input.selectionStart, end = d.input.selectionEnd; |
| 1663 | d.input.value += "$"; |
| 1664 | d.input.selectionStart = start; |
| 1665 | d.input.selectionEnd = end; |
| 1666 | cm.state.fakedLastChar = true; |
| 1667 | } |
| 1668 | cm.state.pasteIncoming = true; |
| 1669 | fastPoll(cm); |
| 1670 | }); |
| 1671 | |
| 1672 | function prepareCopy(e) { |
| 1673 | if (d.inaccurateSelection) { |
| 1674 | d.prevInput = ""; |
| 1675 | d.inaccurateSelection = false; |
| 1676 | d.input.value = cm.getSelection(); |
| 1677 | selectInput(d.input); |
| 1678 | } |
| 1679 | if (e.type == "cut") cm.state.cutIncoming = true; |
| 1680 | } |
| 1681 | on(d.input, "cut", prepareCopy); |
| 1682 | on(d.input, "copy", prepareCopy); |
| 1683 | |
| 1684 | // Needed to handle Tab key in KHTML |
| 1685 | if (khtml) on(d.sizer, "mouseup", function() { |
| 1686 | if (document.activeElement == d.input) d.input.blur(); |
| 1687 | focusInput(cm); |
| 1688 | }); |
| 1689 | } |
| 1690 | |
| 1691 | function eventInWidget(display, e) { |
| 1692 | for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { |
| 1693 | if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; |
| 1694 | } |
| 1695 | } |
| 1696 | |
| 1697 | function posFromMouse(cm, e, liberal) { |
| 1698 | var display = cm.display; |
| 1699 | if (!liberal) { |
| 1700 | var target = e_target(e); |
| 1701 | if (target == display.scrollbarH || target == display.scrollbarH.firstChild || |
| 1702 | target == display.scrollbarV || target == display.scrollbarV.firstChild || |
| 1703 | target == display.scrollbarFiller || target == display.gutterFiller) return null; |
| 1704 | } |
| 1705 | var x, y, space = getRect(display.lineSpace); |
| 1706 | // Fails unpredictably on IE[67] when mouse is dragged around quickly. |
| 1707 | try { x = e.clientX; y = e.clientY; } catch (e) { return null; } |
| 1708 | return coordsChar(cm, x - space.left, y - space.top); |
| 1709 | } |
| 1710 | |
| 1711 | var lastClick, lastDoubleClick; |
| 1712 | function onMouseDown(e) { |
| 1713 | if (signalDOMEvent(this, e)) return; |
| 1714 | var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel; |
| 1715 | sel.shift = e.shiftKey; |
| 1716 | |
| 1717 | if (eventInWidget(display, e)) { |
| 1718 | if (!webkit) { |
| 1719 | display.scroller.draggable = false; |
| 1720 | setTimeout(function(){display.scroller.draggable = true;}, 100); |
| 1721 | } |
| 1722 | return; |
| 1723 | } |
| 1724 | if (clickInGutter(cm, e)) return; |
| 1725 | var start = posFromMouse(cm, e); |
| 1726 | window.focus(); |
| 1727 | |
| 1728 | switch (e_button(e)) { |
| 1729 | case 3: |
| 1730 | if (captureMiddleClick) onContextMenu.call(cm, cm, e); |
| 1731 | return; |
| 1732 | case 2: |
| 1733 | if (webkit) cm.state.lastMiddleDown = +new Date; |
| 1734 | if (start) extendSelection(cm.doc, start); |
| 1735 | setTimeout(bind(focusInput, cm), 20); |
| 1736 | e_preventDefault(e); |
| 1737 | return; |
| 1738 | } |
| 1739 | // For button 1, if it was clicked inside the editor |
| 1740 | // (posFromMouse returning non-null), we have to adjust the |
| 1741 | // selection. |
| 1742 | if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} |
| 1743 | |
| 1744 | if (!cm.state.focused) onFocus(cm); |
| 1745 | |
| 1746 | var now = +new Date, type = "single"; |
| 1747 | if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { |
| 1748 | type = "triple"; |
| 1749 | e_preventDefault(e); |
| 1750 | setTimeout(bind(focusInput, cm), 20); |
| 1751 | selectLine(cm, start.line); |
| 1752 | } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { |
| 1753 | type = "double"; |
| 1754 | lastDoubleClick = {time: now, pos: start}; |
| 1755 | e_preventDefault(e); |
| 1756 | var word = findWordAt(getLine(doc, start.line).text, start); |
| 1757 | extendSelection(cm.doc, word.from, word.to); |
| 1758 | } else { lastClick = {time: now, pos: start}; } |
| 1759 | |
| 1760 | var last = start; |
| 1761 | if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && |
| 1762 | !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { |
| 1763 | var dragEnd = operation(cm, function(e2) { |
| 1764 | if (webkit) display.scroller.draggable = false; |
| 1765 | cm.state.draggingText = false; |
| 1766 | off(document, "mouseup", dragEnd); |
| 1767 | off(display.scroller, "drop", dragEnd); |
| 1768 | if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { |
| 1769 | e_preventDefault(e2); |
| 1770 | extendSelection(cm.doc, start); |
| 1771 | focusInput(cm); |
| 1772 | // Work around unexplainable focus problem in IE9 (#2127) |
| 1773 | if (old_ie && !ie_lt9) |
| 1774 | setTimeout(function() {document.body.focus(); focusInput(cm);}, 20); |
| 1775 | } |
| 1776 | }); |
| 1777 | // Let the drag handler handle this. |
| 1778 | if (webkit) display.scroller.draggable = true; |
| 1779 | cm.state.draggingText = dragEnd; |
| 1780 | // IE's approach to draggable |
| 1781 | if (display.scroller.dragDrop) display.scroller.dragDrop(); |
| 1782 | on(document, "mouseup", dragEnd); |
| 1783 | on(display.scroller, "drop", dragEnd); |
| 1784 | return; |
| 1785 | } |
| 1786 | e_preventDefault(e); |
| 1787 | if (type == "single") extendSelection(cm.doc, clipPos(doc, start)); |
| 1788 | |
| 1789 | var startstart = sel.from, startend = sel.to, lastPos = start; |
| 1790 | |
| 1791 | function doSelect(cur) { |
| 1792 | if (posEq(lastPos, cur)) return; |
| 1793 | lastPos = cur; |
| 1794 | |
| 1795 | if (type == "single") { |
| 1796 | extendSelection(cm.doc, clipPos(doc, start), cur); |
| 1797 | return; |
| 1798 | } |
| 1799 | |
| 1800 | startstart = clipPos(doc, startstart); |
| 1801 | startend = clipPos(doc, startend); |
| 1802 | if (type == "double") { |
| 1803 | var word = findWordAt(getLine(doc, cur.line).text, cur); |
| 1804 | if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend); |
| 1805 | else extendSelection(cm.doc, startstart, word.to); |
| 1806 | } else if (type == "triple") { |
| 1807 | if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); |
| 1808 | else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); |
| 1809 | } |
| 1810 | } |
| 1811 | |
| 1812 | var editorSize = getRect(display.wrapper); |
| 1813 | // Used to ensure timeout re-tries don't fire when another extend |
| 1814 | // happened in the meantime (clearTimeout isn't reliable -- at |
| 1815 | // least on Chrome, the timeouts still happen even when cleared, |
| 1816 | // if the clear happens after their scheduled firing time). |
| 1817 | var counter = 0; |
| 1818 | |
| 1819 | function extend(e) { |
| 1820 | var curCount = ++counter; |
| 1821 | var cur = posFromMouse(cm, e, true); |
| 1822 | if (!cur) return; |
| 1823 | if (!posEq(cur, last)) { |
| 1824 | if (!cm.state.focused) onFocus(cm); |
| 1825 | last = cur; |
| 1826 | doSelect(cur); |
| 1827 | var visible = visibleLines(display, doc); |
| 1828 | if (cur.line >= visible.to || cur.line < visible.from) |
| 1829 | setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); |
| 1830 | } else { |
| 1831 | var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; |
| 1832 | if (outside) setTimeout(operation(cm, function() { |
| 1833 | if (counter != curCount) return; |
| 1834 | display.scroller.scrollTop += outside; |
| 1835 | extend(e); |
| 1836 | }), 50); |
| 1837 | } |
| 1838 | } |
| 1839 | |
| 1840 | function done(e) { |
| 1841 | counter = Infinity; |
| 1842 | e_preventDefault(e); |
| 1843 | focusInput(cm); |
| 1844 | off(document, "mousemove", move); |
| 1845 | off(document, "mouseup", up); |
| 1846 | } |
| 1847 | |
| 1848 | var move = operation(cm, function(e) { |
| 1849 | if (!old_ie && !e_button(e)) done(e); |
| 1850 | else extend(e); |
| 1851 | }); |
| 1852 | var up = operation(cm, done); |
| 1853 | on(document, "mousemove", move); |
| 1854 | on(document, "mouseup", up); |
| 1855 | } |
| 1856 | |
| 1857 | function gutterEvent(cm, e, type, prevent, signalfn) { |
| 1858 | try { var mX = e.clientX, mY = e.clientY; } |
| 1859 | catch(e) { return false; } |
| 1860 | if (mX >= Math.floor(getRect(cm.display.gutters).right)) return false; |
| 1861 | if (prevent) e_preventDefault(e); |
| 1862 | |
| 1863 | var display = cm.display; |
| 1864 | var lineBox = getRect(display.lineDiv); |
| 1865 | |
| 1866 | if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e); |
| 1867 | mY -= lineBox.top - display.viewOffset; |
| 1868 | |
| 1869 | for (var i = 0; i < cm.options.gutters.length; ++i) { |
| 1870 | var g = display.gutters.childNodes[i]; |
| 1871 | if (g && getRect(g).right >= mX) { |
| 1872 | var line = lineAtHeight(cm.doc, mY); |
| 1873 | var gutter = cm.options.gutters[i]; |
| 1874 | signalfn(cm, type, cm, line, gutter, e); |
| 1875 | return e_defaultPrevented(e); |
| 1876 | } |
| 1877 | } |
| 1878 | } |
| 1879 | |
| 1880 | function contextMenuInGutter(cm, e) { |
| 1881 | if (!hasHandler(cm, "gutterContextMenu")) return false; |
| 1882 | return gutterEvent(cm, e, "gutterContextMenu", false, signal); |
| 1883 | } |
| 1884 | |
| 1885 | function clickInGutter(cm, e) { |
| 1886 | return gutterEvent(cm, e, "gutterClick", true, signalLater); |
| 1887 | } |
| 1888 | |
| 1889 | // Kludge to work around strange IE behavior where it'll sometimes |
| 1890 | // re-fire a series of drag-related events right after the drop (#1551) |
| 1891 | var lastDrop = 0; |
| 1892 | |
| 1893 | function onDrop(e) { |
| 1894 | var cm = this; |
| 1895 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) |
| 1896 | return; |
| 1897 | e_preventDefault(e); |
| 1898 | if (ie) lastDrop = +new Date; |
| 1899 | var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; |
| 1900 | if (!pos || isReadOnly(cm)) return; |
| 1901 | if (files && files.length && window.FileReader && window.File) { |
| 1902 | var n = files.length, text = Array(n), read = 0; |
| 1903 | var loadFile = function(file, i) { |
| 1904 | var reader = new FileReader; |
| 1905 | reader.onload = function() { |
| 1906 | text[i] = reader.result; |
| 1907 | if (++read == n) { |
| 1908 | pos = clipPos(cm.doc, pos); |
| 1909 | makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); |
| 1910 | } |
| 1911 | }; |
| 1912 | reader.readAsText(file); |
| 1913 | }; |
| 1914 | for (var i = 0; i < n; ++i) loadFile(files[i], i); |
| 1915 | } else { |
| 1916 | // Don't do a replace if the drop happened inside of the selected text. |
| 1917 | if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { |
| 1918 | cm.state.draggingText(e); |
| 1919 | // Ensure the editor is re-focused |
| 1920 | setTimeout(bind(focusInput, cm), 20); |
| 1921 | return; |
| 1922 | } |
| 1923 | try { |
| 1924 | var text = e.dataTransfer.getData("Text"); |
| 1925 | if (text) { |
| 1926 | var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; |
| 1927 | setSelection(cm.doc, pos, pos); |
| 1928 | if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste"); |
| 1929 | cm.replaceSelection(text, null, "paste"); |
| 1930 | focusInput(cm); |
| 1931 | } |
| 1932 | } |
| 1933 | catch(e){} |
| 1934 | } |
| 1935 | } |
| 1936 | |
| 1937 | function onDragStart(cm, e) { |
| 1938 | if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } |
| 1939 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; |
| 1940 | |
| 1941 | var txt = cm.getSelection(); |
| 1942 | e.dataTransfer.setData("Text", txt); |
| 1943 | |
| 1944 | // Use dummy image instead of default browsers image. |
| 1945 | // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. |
| 1946 | if (e.dataTransfer.setDragImage && !safari) { |
| 1947 | var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); |
| 1948 | img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; |
| 1949 | if (opera) { |
| 1950 | img.width = img.height = 1; |
| 1951 | cm.display.wrapper.appendChild(img); |
| 1952 | // Force a relayout, or Opera won't use our image for some obscure reason |
| 1953 | img._top = img.offsetTop; |
| 1954 | } |
| 1955 | e.dataTransfer.setDragImage(img, 0, 0); |
| 1956 | if (opera) img.parentNode.removeChild(img); |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | function setScrollTop(cm, val) { |
| 1961 | if (Math.abs(cm.doc.scrollTop - val) < 2) return; |
| 1962 | cm.doc.scrollTop = val; |
| 1963 | if (!gecko) updateDisplay(cm, [], val); |
| 1964 | if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; |
| 1965 | if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; |
| 1966 | if (gecko) updateDisplay(cm, []); |
| 1967 | startWorker(cm, 100); |
| 1968 | } |
| 1969 | function setScrollLeft(cm, val, isScroller) { |
| 1970 | if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; |
| 1971 | val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); |
| 1972 | cm.doc.scrollLeft = val; |
| 1973 | alignHorizontally(cm); |
| 1974 | if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; |
| 1975 | if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; |
| 1976 | } |
| 1977 | |
| 1978 | // Since the delta values reported on mouse wheel events are |
| 1979 | // unstandardized between browsers and even browser versions, and |
| 1980 | // generally horribly unpredictable, this code starts by measuring |
| 1981 | // the scroll effect that the first few mouse wheel events have, |
| 1982 | // and, from that, detects the way it can convert deltas to pixel |
| 1983 | // offsets afterwards. |
| 1984 | // |
| 1985 | // The reason we want to know the amount a wheel event will scroll |
| 1986 | // is that it gives us a chance to update the display before the |
| 1987 | // actual scrolling happens, reducing flickering. |
| 1988 | |
| 1989 | var wheelSamples = 0, wheelPixelsPerUnit = null; |
| 1990 | // Fill in a browser-detected starting value on browsers where we |
| 1991 | // know one. These don't have to be accurate -- the result of them |
| 1992 | // being wrong would just be a slight flicker on the first wheel |
| 1993 | // scroll (if it is large enough). |
| 1994 | if (ie) wheelPixelsPerUnit = -.53; |
| 1995 | else if (gecko) wheelPixelsPerUnit = 15; |
| 1996 | else if (chrome) wheelPixelsPerUnit = -.7; |
| 1997 | else if (safari) wheelPixelsPerUnit = -1/3; |
| 1998 | |
| 1999 | function onScrollWheel(cm, e) { |
| 2000 | var dx = e.wheelDeltaX, dy = e.wheelDeltaY; |
| 2001 | if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; |
| 2002 | if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; |
| 2003 | else if (dy == null) dy = e.wheelDelta; |
| 2004 | |
| 2005 | var display = cm.display, scroll = display.scroller; |
| 2006 | // Quit if there's nothing to scroll here |
| 2007 | if (!(dx && scroll.scrollWidth > scroll.clientWidth || |
| 2008 | dy && scroll.scrollHeight > scroll.clientHeight)) return; |
| 2009 | |
| 2010 | // Webkit browsers on OS X abort momentum scrolls when the target |
| 2011 | // of the scroll event is removed from the scrollable element. |
| 2012 | // This hack (see related code in patchDisplay) makes sure the |
| 2013 | // element is kept around. |
| 2014 | if (dy && mac && webkit) { |
| 2015 | for (var cur = e.target; cur != scroll; cur = cur.parentNode) { |
| 2016 | if (cur.lineObj) { |
| 2017 | cm.display.currentWheelTarget = cur; |
| 2018 | break; |
| 2019 | } |
| 2020 | } |
| 2021 | } |
| 2022 | |
| 2023 | // On some browsers, horizontal scrolling will cause redraws to |
| 2024 | // happen before the gutter has been realigned, causing it to |
| 2025 | // wriggle around in a most unseemly way. When we have an |
| 2026 | // estimated pixels/delta value, we just handle horizontal |
| 2027 | // scrolling entirely here. It'll be slightly off from native, but |
| 2028 | // better than glitching out. |
| 2029 | if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { |
| 2030 | if (dy) |
| 2031 | setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); |
| 2032 | setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); |
| 2033 | e_preventDefault(e); |
| 2034 | display.wheelStartX = null; // Abort measurement, if in progress |
| 2035 | return; |
| 2036 | } |
| 2037 | |
| 2038 | if (dy && wheelPixelsPerUnit != null) { |
| 2039 | var pixels = dy * wheelPixelsPerUnit; |
| 2040 | var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; |
| 2041 | if (pixels < 0) top = Math.max(0, top + pixels - 50); |
| 2042 | else bot = Math.min(cm.doc.height, bot + pixels + 50); |
| 2043 | updateDisplay(cm, [], {top: top, bottom: bot}); |
| 2044 | } |
| 2045 | |
| 2046 | if (wheelSamples < 20) { |
| 2047 | if (display.wheelStartX == null) { |
| 2048 | display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; |
| 2049 | display.wheelDX = dx; display.wheelDY = dy; |
| 2050 | setTimeout(function() { |
| 2051 | if (display.wheelStartX == null) return; |
| 2052 | var movedX = scroll.scrollLeft - display.wheelStartX; |
| 2053 | var movedY = scroll.scrollTop - display.wheelStartY; |
| 2054 | var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || |
| 2055 | (movedX && display.wheelDX && movedX / display.wheelDX); |
| 2056 | display.wheelStartX = display.wheelStartY = null; |
| 2057 | if (!sample) return; |
| 2058 | wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); |
| 2059 | ++wheelSamples; |
| 2060 | }, 200); |
| 2061 | } else { |
| 2062 | display.wheelDX += dx; display.wheelDY += dy; |
| 2063 | } |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | function doHandleBinding(cm, bound, dropShift) { |
| 2068 | if (typeof bound == "string") { |
| 2069 | bound = commands[bound]; |
| 2070 | if (!bound) return false; |
| 2071 | } |
| 2072 | // Ensure previous input has been read, so that the handler sees a |
| 2073 | // consistent view of the document |
| 2074 | if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; |
| 2075 | var doc = cm.doc, prevShift = doc.sel.shift, done = false; |
| 2076 | try { |
| 2077 | if (isReadOnly(cm)) cm.state.suppressEdits = true; |
| 2078 | if (dropShift) doc.sel.shift = false; |
| 2079 | done = bound(cm) != Pass; |
| 2080 | } finally { |
| 2081 | doc.sel.shift = prevShift; |
| 2082 | cm.state.suppressEdits = false; |
| 2083 | } |
| 2084 | return done; |
| 2085 | } |
| 2086 | |
| 2087 | function allKeyMaps(cm) { |
| 2088 | var maps = cm.state.keyMaps.slice(0); |
| 2089 | if (cm.options.extraKeys) maps.push(cm.options.extraKeys); |
| 2090 | maps.push(cm.options.keyMap); |
| 2091 | return maps; |
| 2092 | } |
| 2093 | |
| 2094 | var maybeTransition; |
| 2095 | function handleKeyBinding(cm, e) { |
| 2096 | // Handle auto keymap transitions |
| 2097 | var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; |
| 2098 | clearTimeout(maybeTransition); |
| 2099 | if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { |
| 2100 | if (getKeyMap(cm.options.keyMap) == startMap) { |
| 2101 | cm.options.keyMap = (next.call ? next.call(null, cm) : next); |
| 2102 | keyMapChanged(cm); |
| 2103 | } |
| 2104 | }, 50); |
| 2105 | |
| 2106 | var name = keyName(e, true), handled = false; |
| 2107 | if (!name) return false; |
| 2108 | var keymaps = allKeyMaps(cm); |
| 2109 | |
| 2110 | if (e.shiftKey) { |
| 2111 | // First try to resolve full name (including 'Shift-'). Failing |
| 2112 | // that, see if there is a cursor-motion command (starting with |
| 2113 | // 'go') bound to the keyname without 'Shift-'. |
| 2114 | handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);}) |
| 2115 | || lookupKey(name, keymaps, function(b) { |
| 2116 | if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) |
| 2117 | return doHandleBinding(cm, b); |
| 2118 | }); |
| 2119 | } else { |
| 2120 | handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); }); |
| 2121 | } |
| 2122 | |
| 2123 | if (handled) { |
| 2124 | e_preventDefault(e); |
| 2125 | restartBlink(cm); |
| 2126 | if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } |
| 2127 | signalLater(cm, "keyHandled", cm, name, e); |
| 2128 | } |
| 2129 | return handled; |
| 2130 | } |
| 2131 | |
| 2132 | function handleCharBinding(cm, e, ch) { |
| 2133 | var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), |
| 2134 | function(b) { return doHandleBinding(cm, b, true); }); |
| 2135 | if (handled) { |
| 2136 | e_preventDefault(e); |
| 2137 | restartBlink(cm); |
| 2138 | signalLater(cm, "keyHandled", cm, "'" + ch + "'", e); |
| 2139 | } |
| 2140 | return handled; |
| 2141 | } |
| 2142 | |
| 2143 | function onKeyUp(e) { |
| 2144 | var cm = this; |
| 2145 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
| 2146 | if (e.keyCode == 16) cm.doc.sel.shift = false; |
| 2147 | } |
| 2148 | |
| 2149 | var lastStoppedKey = null; |
| 2150 | function onKeyDown(e) { |
| 2151 | var cm = this; |
| 2152 | if (!cm.state.focused) onFocus(cm); |
| 2153 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
| 2154 | if (old_ie && e.keyCode == 27) e.returnValue = false; |
| 2155 | var code = e.keyCode; |
| 2156 | // IE does strange things with escape. |
| 2157 | cm.doc.sel.shift = code == 16 || e.shiftKey; |
| 2158 | // First give onKeyEvent option a chance to handle this. |
| 2159 | var handled = handleKeyBinding(cm, e); |
| 2160 | if (opera) { |
| 2161 | lastStoppedKey = handled ? code : null; |
| 2162 | // Opera has no cut event... we try to at least catch the key combo |
| 2163 | if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) |
| 2164 | cm.replaceSelection(""); |
| 2165 | } |
| 2166 | } |
| 2167 | |
| 2168 | function onKeyPress(e) { |
| 2169 | var cm = this; |
| 2170 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
| 2171 | var keyCode = e.keyCode, charCode = e.charCode; |
| 2172 | if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} |
| 2173 | if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; |
| 2174 | var ch = String.fromCharCode(charCode == null ? keyCode : charCode); |
| 2175 | if (handleCharBinding(cm, e, ch)) return; |
| 2176 | if (ie && !ie_lt9) cm.display.inputHasSelection = null; |
| 2177 | fastPoll(cm); |
| 2178 | } |
| 2179 | |
| 2180 | function onFocus(cm) { |
| 2181 | if (cm.options.readOnly == "nocursor") return; |
| 2182 | if (!cm.state.focused) { |
| 2183 | signal(cm, "focus", cm); |
| 2184 | cm.state.focused = true; |
| 2185 | if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) |
| 2186 | cm.display.wrapper.className += " CodeMirror-focused"; |
| 2187 | if (!cm.curOp) { |
| 2188 | resetInput(cm, true); |
| 2189 | if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730 |
| 2190 | } |
| 2191 | } |
| 2192 | slowPoll(cm); |
| 2193 | restartBlink(cm); |
| 2194 | } |
| 2195 | function onBlur(cm) { |
| 2196 | if (cm.state.focused) { |
| 2197 | signal(cm, "blur", cm); |
| 2198 | cm.state.focused = false; |
| 2199 | cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", ""); |
| 2200 | } |
| 2201 | clearInterval(cm.display.blinker); |
| 2202 | setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150); |
| 2203 | } |
| 2204 | |
| 2205 | var detectingSelectAll; |
| 2206 | function onContextMenu(cm, e) { |
| 2207 | if (signalDOMEvent(cm, e, "contextmenu")) return; |
| 2208 | var display = cm.display, sel = cm.doc.sel; |
| 2209 | if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return; |
| 2210 | |
| 2211 | var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; |
| 2212 | if (!pos || opera) return; // Opera is difficult. |
| 2213 | |
| 2214 | // Reset the current text selection only if the click is done outside of the selection |
| 2215 | // and 'resetSelectionOnContextMenu' option is true. |
| 2216 | var reset = cm.options.resetSelectionOnContextMenu; |
| 2217 | if (reset && (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))) |
| 2218 | operation(cm, setSelection)(cm.doc, pos, pos); |
| 2219 | |
| 2220 | var oldCSS = display.input.style.cssText; |
| 2221 | display.inputDiv.style.position = "absolute"; |
| 2222 | display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + |
| 2223 | "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: transparent; outline: none;" + |
| 2224 | "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; |
| 2225 | focusInput(cm); |
| 2226 | resetInput(cm, true); |
| 2227 | // Adds "Select all" to context menu in FF |
| 2228 | if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; |
| 2229 | |
| 2230 | function prepareSelectAllHack() { |
| 2231 | if (display.input.selectionStart != null) { |
| 2232 | var extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value); |
| 2233 | display.prevInput = "\u200b"; |
| 2234 | display.input.selectionStart = 1; display.input.selectionEnd = extval.length; |
| 2235 | } |
| 2236 | } |
| 2237 | function rehide() { |
| 2238 | display.inputDiv.style.position = "relative"; |
| 2239 | display.input.style.cssText = oldCSS; |
| 2240 | if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; |
| 2241 | slowPoll(cm); |
| 2242 | |
| 2243 | // Try to detect the user choosing select-all |
| 2244 | if (display.input.selectionStart != null) { |
| 2245 | if (!ie || ie_lt9) prepareSelectAllHack(); |
| 2246 | clearTimeout(detectingSelectAll); |
| 2247 | var i = 0, poll = function(){ |
| 2248 | if (display.prevInput == "\u200b" && display.input.selectionStart == 0) |
| 2249 | operation(cm, commands.selectAll)(cm); |
| 2250 | else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); |
| 2251 | else resetInput(cm); |
| 2252 | }; |
| 2253 | detectingSelectAll = setTimeout(poll, 200); |
| 2254 | } |
| 2255 | } |
| 2256 | |
| 2257 | if (ie && !ie_lt9) prepareSelectAllHack(); |
| 2258 | if (captureMiddleClick) { |
| 2259 | e_stop(e); |
| 2260 | var mouseup = function() { |
| 2261 | off(window, "mouseup", mouseup); |
| 2262 | setTimeout(rehide, 20); |
| 2263 | }; |
| 2264 | on(window, "mouseup", mouseup); |
| 2265 | } else { |
| 2266 | setTimeout(rehide, 50); |
| 2267 | } |
| 2268 | } |
| 2269 | |
| 2270 | // UPDATING |
| 2271 | |
| 2272 | var changeEnd = CodeMirror.changeEnd = function(change) { |
| 2273 | if (!change.text) return change.to; |
| 2274 | return Pos(change.from.line + change.text.length - 1, |
| 2275 | lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); |
| 2276 | }; |
| 2277 | |
| 2278 | // Make sure a position will be valid after the given change. |
| 2279 | function clipPostChange(doc, change, pos) { |
| 2280 | if (!posLess(change.from, pos)) return clipPos(doc, pos); |
| 2281 | var diff = (change.text.length - 1) - (change.to.line - change.from.line); |
| 2282 | if (pos.line > change.to.line + diff) { |
| 2283 | var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; |
| 2284 | if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length); |
| 2285 | return clipToLen(pos, getLine(doc, preLine).text.length); |
| 2286 | } |
| 2287 | if (pos.line == change.to.line + diff) |
| 2288 | return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + |
| 2289 | getLine(doc, change.to.line).text.length - change.to.ch); |
| 2290 | var inside = pos.line - change.from.line; |
| 2291 | return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); |
| 2292 | } |
| 2293 | |
| 2294 | // Hint can be null|"end"|"start"|"around"|{anchor,head} |
| 2295 | function computeSelAfterChange(doc, change, hint) { |
| 2296 | if (hint && typeof hint == "object") // Assumed to be {anchor, head} object |
| 2297 | return {anchor: clipPostChange(doc, change, hint.anchor), |
| 2298 | head: clipPostChange(doc, change, hint.head)}; |
| 2299 | |
| 2300 | if (hint == "start") return {anchor: change.from, head: change.from}; |
| 2301 | |
| 2302 | var end = changeEnd(change); |
| 2303 | if (hint == "around") return {anchor: change.from, head: end}; |
| 2304 | if (hint == "end") return {anchor: end, head: end}; |
| 2305 | |
| 2306 | // hint is null, leave the selection alone as much as possible |
| 2307 | var adjustPos = function(pos) { |
| 2308 | if (posLess(pos, change.from)) return pos; |
| 2309 | if (!posLess(change.to, pos)) return end; |
| 2310 | |
| 2311 | var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; |
| 2312 | if (pos.line == change.to.line) ch += end.ch - change.to.ch; |
| 2313 | return Pos(line, ch); |
| 2314 | }; |
| 2315 | return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; |
| 2316 | } |
| 2317 | |
| 2318 | function filterChange(doc, change, update) { |
| 2319 | var obj = { |
| 2320 | canceled: false, |
| 2321 | from: change.from, |
| 2322 | to: change.to, |
| 2323 | text: change.text, |
| 2324 | origin: change.origin, |
| 2325 | cancel: function() { this.canceled = true; } |
| 2326 | }; |
| 2327 | if (update) obj.update = function(from, to, text, origin) { |
| 2328 | if (from) this.from = clipPos(doc, from); |
| 2329 | if (to) this.to = clipPos(doc, to); |
| 2330 | if (text) this.text = text; |
| 2331 | if (origin !== undefined) this.origin = origin; |
| 2332 | }; |
| 2333 | signal(doc, "beforeChange", doc, obj); |
| 2334 | if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); |
| 2335 | |
| 2336 | if (obj.canceled) return null; |
| 2337 | return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; |
| 2338 | } |
| 2339 | |
| 2340 | // Replace the range from from to to by the strings in replacement. |
| 2341 | // change is a {from, to, text [, origin]} object |
| 2342 | function makeChange(doc, change, selUpdate, ignoreReadOnly) { |
| 2343 | if (doc.cm) { |
| 2344 | if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly); |
| 2345 | if (doc.cm.state.suppressEdits) return; |
| 2346 | } |
| 2347 | |
| 2348 | if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { |
| 2349 | change = filterChange(doc, change, true); |
| 2350 | if (!change) return; |
| 2351 | } |
| 2352 | |
| 2353 | // Possibly split or suppress the update based on the presence |
| 2354 | // of read-only spans in its range. |
| 2355 | var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); |
| 2356 | if (split) { |
| 2357 | for (var i = split.length - 1; i >= 1; --i) |
| 2358 | makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]}); |
| 2359 | if (split.length) |
| 2360 | makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate); |
| 2361 | } else { |
| 2362 | makeChangeNoReadonly(doc, change, selUpdate); |
| 2363 | } |
| 2364 | } |
| 2365 | |
| 2366 | function makeChangeNoReadonly(doc, change, selUpdate) { |
| 2367 | if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return; |
| 2368 | var selAfter = computeSelAfterChange(doc, change, selUpdate); |
| 2369 | addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); |
| 2370 | |
| 2371 | makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); |
| 2372 | var rebased = []; |
| 2373 | |
| 2374 | linkedDocs(doc, function(doc, sharedHist) { |
| 2375 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
| 2376 | rebaseHist(doc.history, change); |
| 2377 | rebased.push(doc.history); |
| 2378 | } |
| 2379 | makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); |
| 2380 | }); |
| 2381 | } |
| 2382 | |
| 2383 | function makeChangeFromHistory(doc, type) { |
| 2384 | if (doc.cm && doc.cm.state.suppressEdits) return; |
| 2385 | |
| 2386 | var hist = doc.history; |
| 2387 | var event = (type == "undo" ? hist.done : hist.undone).pop(); |
| 2388 | if (!event) return; |
| 2389 | |
| 2390 | var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, |
| 2391 | anchorAfter: event.anchorBefore, headAfter: event.headBefore, |
| 2392 | generation: hist.generation}; |
| 2393 | (type == "undo" ? hist.undone : hist.done).push(anti); |
| 2394 | hist.generation = event.generation || ++hist.maxGeneration; |
| 2395 | |
| 2396 | var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); |
| 2397 | |
| 2398 | for (var i = event.changes.length - 1; i >= 0; --i) { |
| 2399 | var change = event.changes[i]; |
| 2400 | change.origin = type; |
| 2401 | if (filter && !filterChange(doc, change, false)) { |
| 2402 | (type == "undo" ? hist.done : hist.undone).length = 0; |
| 2403 | return; |
| 2404 | } |
| 2405 | |
| 2406 | anti.changes.push(historyChangeFromChange(doc, change)); |
| 2407 | |
| 2408 | var after = i ? computeSelAfterChange(doc, change, null) |
| 2409 | : {anchor: event.anchorBefore, head: event.headBefore}; |
| 2410 | makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); |
| 2411 | var rebased = []; |
| 2412 | |
| 2413 | linkedDocs(doc, function(doc, sharedHist) { |
| 2414 | if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
| 2415 | rebaseHist(doc.history, change); |
| 2416 | rebased.push(doc.history); |
| 2417 | } |
| 2418 | makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); |
| 2419 | }); |
| 2420 | } |
| 2421 | } |
| 2422 | |
| 2423 | function shiftDoc(doc, distance) { |
| 2424 | function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);} |
| 2425 | doc.first += distance; |
| 2426 | if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance); |
| 2427 | doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor); |
| 2428 | doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to); |
| 2429 | } |
| 2430 | |
| 2431 | function makeChangeSingleDoc(doc, change, selAfter, spans) { |
| 2432 | if (doc.cm && !doc.cm.curOp) |
| 2433 | return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); |
| 2434 | |
| 2435 | if (change.to.line < doc.first) { |
| 2436 | shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); |
| 2437 | return; |
| 2438 | } |
| 2439 | if (change.from.line > doc.lastLine()) return; |
| 2440 | |
| 2441 | // Clip the change to the size of this doc |
| 2442 | if (change.from.line < doc.first) { |
| 2443 | var shift = change.text.length - 1 - (doc.first - change.from.line); |
| 2444 | shiftDoc(doc, shift); |
| 2445 | change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), |
| 2446 | text: [lst(change.text)], origin: change.origin}; |
| 2447 | } |
| 2448 | var last = doc.lastLine(); |
| 2449 | if (change.to.line > last) { |
| 2450 | change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), |
| 2451 | text: [change.text[0]], origin: change.origin}; |
| 2452 | } |
| 2453 | |
| 2454 | change.removed = getBetween(doc, change.from, change.to); |
| 2455 | |
| 2456 | if (!selAfter) selAfter = computeSelAfterChange(doc, change, null); |
| 2457 | if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); |
| 2458 | else updateDoc(doc, change, spans, selAfter); |
| 2459 | } |
| 2460 | |
| 2461 | function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { |
| 2462 | var doc = cm.doc, display = cm.display, from = change.from, to = change.to; |
| 2463 | |
| 2464 | var recomputeMaxLength = false, checkWidthStart = from.line; |
| 2465 | if (!cm.options.lineWrapping) { |
| 2466 | checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line))); |
| 2467 | doc.iter(checkWidthStart, to.line + 1, function(line) { |
| 2468 | if (line == display.maxLine) { |
| 2469 | recomputeMaxLength = true; |
| 2470 | return true; |
| 2471 | } |
| 2472 | }); |
| 2473 | } |
| 2474 | |
| 2475 | if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) |
| 2476 | cm.curOp.cursorActivity = true; |
| 2477 | |
| 2478 | updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); |
| 2479 | |
| 2480 | if (!cm.options.lineWrapping) { |
| 2481 | doc.iter(checkWidthStart, from.line + change.text.length, function(line) { |
| 2482 | var len = lineLength(doc, line); |
| 2483 | if (len > display.maxLineLength) { |
| 2484 | display.maxLine = line; |
| 2485 | display.maxLineLength = len; |
| 2486 | display.maxLineChanged = true; |
| 2487 | recomputeMaxLength = false; |
| 2488 | } |
| 2489 | }); |
| 2490 | if (recomputeMaxLength) cm.curOp.updateMaxLine = true; |
| 2491 | } |
| 2492 | |
| 2493 | // Adjust frontier, schedule worker |
| 2494 | doc.frontier = Math.min(doc.frontier, from.line); |
| 2495 | startWorker(cm, 400); |
| 2496 | |
| 2497 | var lendiff = change.text.length - (to.line - from.line) - 1; |
| 2498 | // Remember that these lines changed, for updating the display |
| 2499 | regChange(cm, from.line, to.line + 1, lendiff); |
| 2500 | |
| 2501 | if (hasHandler(cm, "change")) { |
| 2502 | var changeObj = {from: from, to: to, |
| 2503 | text: change.text, |
| 2504 | removed: change.removed, |
| 2505 | origin: change.origin}; |
| 2506 | if (cm.curOp.textChanged) { |
| 2507 | for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} |
| 2508 | cur.next = changeObj; |
| 2509 | } else cm.curOp.textChanged = changeObj; |
| 2510 | } |
| 2511 | } |
| 2512 | |
| 2513 | function replaceRange(doc, code, from, to, origin) { |
| 2514 | if (!to) to = from; |
| 2515 | if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } |
| 2516 | if (typeof code == "string") code = splitLines(code); |
| 2517 | makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); |
| 2518 | } |
| 2519 | |
| 2520 | // POSITION OBJECT |
| 2521 | |
| 2522 | function Pos(line, ch) { |
| 2523 | if (!(this instanceof Pos)) return new Pos(line, ch); |
| 2524 | this.line = line; this.ch = ch; |
| 2525 | } |
| 2526 | CodeMirror.Pos = Pos; |
| 2527 | |
| 2528 | function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} |
| 2529 | function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} |
| 2530 | function cmp(a, b) {return a.line - b.line || a.ch - b.ch;} |
| 2531 | function copyPos(x) {return Pos(x.line, x.ch);} |
| 2532 | |
| 2533 | // SELECTION |
| 2534 | |
| 2535 | function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} |
| 2536 | function clipPos(doc, pos) { |
| 2537 | if (pos.line < doc.first) return Pos(doc.first, 0); |
| 2538 | var last = doc.first + doc.size - 1; |
| 2539 | if (pos.line > last) return Pos(last, getLine(doc, last).text.length); |
| 2540 | return clipToLen(pos, getLine(doc, pos.line).text.length); |
| 2541 | } |
| 2542 | function clipToLen(pos, linelen) { |
| 2543 | var ch = pos.ch; |
| 2544 | if (ch == null || ch > linelen) return Pos(pos.line, linelen); |
| 2545 | else if (ch < 0) return Pos(pos.line, 0); |
| 2546 | else return pos; |
| 2547 | } |
| 2548 | function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} |
| 2549 | |
| 2550 | // If shift is held, this will move the selection anchor. Otherwise, |
| 2551 | // it'll set the whole selection. |
| 2552 | function extendSelection(doc, pos, other, bias) { |
| 2553 | if (doc.sel.shift || doc.sel.extend) { |
| 2554 | var anchor = doc.sel.anchor; |
| 2555 | if (other) { |
| 2556 | var posBefore = posLess(pos, anchor); |
| 2557 | if (posBefore != posLess(other, anchor)) { |
| 2558 | anchor = pos; |
| 2559 | pos = other; |
| 2560 | } else if (posBefore != posLess(pos, other)) { |
| 2561 | pos = other; |
| 2562 | } |
| 2563 | } |
| 2564 | setSelection(doc, anchor, pos, bias); |
| 2565 | } else { |
| 2566 | setSelection(doc, pos, other || pos, bias); |
| 2567 | } |
| 2568 | if (doc.cm) doc.cm.curOp.userSelChange = true; |
| 2569 | } |
| 2570 | |
| 2571 | function filterSelectionChange(doc, anchor, head) { |
| 2572 | var obj = {anchor: anchor, head: head}; |
| 2573 | signal(doc, "beforeSelectionChange", doc, obj); |
| 2574 | if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); |
| 2575 | obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head); |
| 2576 | return obj; |
| 2577 | } |
| 2578 | |
| 2579 | // Update the selection. Last two args are only used by |
| 2580 | // updateDoc, since they have to be expressed in the line |
| 2581 | // numbers before the update. |
| 2582 | function setSelection(doc, anchor, head, bias, checkAtomic) { |
| 2583 | if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { |
| 2584 | var filtered = filterSelectionChange(doc, anchor, head); |
| 2585 | head = filtered.head; |
| 2586 | anchor = filtered.anchor; |
| 2587 | } |
| 2588 | |
| 2589 | var sel = doc.sel; |
| 2590 | sel.goalColumn = null; |
| 2591 | if (bias == null) bias = posLess(head, sel.head) ? -1 : 1; |
| 2592 | // Skip over atomic spans. |
| 2593 | if (checkAtomic || !posEq(anchor, sel.anchor)) |
| 2594 | anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); |
| 2595 | if (checkAtomic || !posEq(head, sel.head)) |
| 2596 | head = skipAtomic(doc, head, bias, checkAtomic != "push"); |
| 2597 | |
| 2598 | if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; |
| 2599 | |
| 2600 | sel.anchor = anchor; sel.head = head; |
| 2601 | var inv = posLess(head, anchor); |
| 2602 | sel.from = inv ? head : anchor; |
| 2603 | sel.to = inv ? anchor : head; |
| 2604 | |
| 2605 | if (doc.cm) |
| 2606 | doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = |
| 2607 | doc.cm.curOp.cursorActivity = true; |
| 2608 | |
| 2609 | signalLater(doc, "cursorActivity", doc); |
| 2610 | } |
| 2611 | |
| 2612 | function reCheckSelection(cm) { |
| 2613 | setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); |
| 2614 | } |
| 2615 | |
| 2616 | function skipAtomic(doc, pos, bias, mayClear) { |
| 2617 | var flipped = false, curPos = pos; |
| 2618 | var dir = bias || 1; |
| 2619 | doc.cantEdit = false; |
| 2620 | search: for (;;) { |
| 2621 | var line = getLine(doc, curPos.line); |
| 2622 | if (line.markedSpans) { |
| 2623 | for (var i = 0; i < line.markedSpans.length; ++i) { |
| 2624 | var sp = line.markedSpans[i], m = sp.marker; |
| 2625 | if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && |
| 2626 | (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { |
| 2627 | if (mayClear) { |
| 2628 | signal(m, "beforeCursorEnter"); |
| 2629 | if (m.explicitlyCleared) { |
| 2630 | if (!line.markedSpans) break; |
| 2631 | else {--i; continue;} |
| 2632 | } |
| 2633 | } |
| 2634 | if (!m.atomic) continue; |
| 2635 | var newPos = m.find()[dir < 0 ? "from" : "to"]; |
| 2636 | if (posEq(newPos, curPos)) { |
| 2637 | newPos.ch += dir; |
| 2638 | if (newPos.ch < 0) { |
| 2639 | if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); |
| 2640 | else newPos = null; |
| 2641 | } else if (newPos.ch > line.text.length) { |
| 2642 | if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); |
| 2643 | else newPos = null; |
| 2644 | } |
| 2645 | if (!newPos) { |
| 2646 | if (flipped) { |
| 2647 | // Driven in a corner -- no valid cursor position found at all |
| 2648 | // -- try again *with* clearing, if we didn't already |
| 2649 | if (!mayClear) return skipAtomic(doc, pos, bias, true); |
| 2650 | // Otherwise, turn off editing until further notice, and return the start of the doc |
| 2651 | doc.cantEdit = true; |
| 2652 | return Pos(doc.first, 0); |
| 2653 | } |
| 2654 | flipped = true; newPos = pos; dir = -dir; |
| 2655 | } |
| 2656 | } |
| 2657 | curPos = newPos; |
| 2658 | continue search; |
| 2659 | } |
| 2660 | } |
| 2661 | } |
| 2662 | return curPos; |
| 2663 | } |
| 2664 | } |
| 2665 | |
| 2666 | // SCROLLING |
| 2667 | |
| 2668 | function scrollCursorIntoView(cm) { |
| 2669 | var coords = scrollPosIntoView(cm, cm.doc.sel.head, null, cm.options.cursorScrollMargin); |
| 2670 | if (!cm.state.focused) return; |
| 2671 | var display = cm.display, box = getRect(display.sizer), doScroll = null; |
| 2672 | if (coords.top + box.top < 0) doScroll = true; |
| 2673 | else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; |
| 2674 | if (doScroll != null && !phantom) { |
| 2675 | var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " + |
| 2676 | (coords.top - display.viewOffset) + "px; height: " + |
| 2677 | (coords.bottom - coords.top + scrollerCutOff) + "px; left: " + |
| 2678 | coords.left + "px; width: 2px;"); |
| 2679 | cm.display.lineSpace.appendChild(scrollNode); |
| 2680 | scrollNode.scrollIntoView(doScroll); |
| 2681 | cm.display.lineSpace.removeChild(scrollNode); |
| 2682 | } |
| 2683 | } |
| 2684 | |
| 2685 | function scrollPosIntoView(cm, pos, end, margin) { |
| 2686 | if (margin == null) margin = 0; |
| 2687 | for (;;) { |
| 2688 | var changed = false, coords = cursorCoords(cm, pos); |
| 2689 | var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); |
| 2690 | var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left), |
| 2691 | Math.min(coords.top, endCoords.top) - margin, |
| 2692 | Math.max(coords.left, endCoords.left), |
| 2693 | Math.max(coords.bottom, endCoords.bottom) + margin); |
| 2694 | var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; |
| 2695 | if (scrollPos.scrollTop != null) { |
| 2696 | setScrollTop(cm, scrollPos.scrollTop); |
| 2697 | if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; |
| 2698 | } |
| 2699 | if (scrollPos.scrollLeft != null) { |
| 2700 | setScrollLeft(cm, scrollPos.scrollLeft); |
| 2701 | if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; |
| 2702 | } |
| 2703 | if (!changed) return coords; |
| 2704 | } |
| 2705 | } |
| 2706 | |
| 2707 | function scrollIntoView(cm, x1, y1, x2, y2) { |
| 2708 | var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); |
| 2709 | if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); |
| 2710 | if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); |
| 2711 | } |
| 2712 | |
| 2713 | function calculateScrollPos(cm, x1, y1, x2, y2) { |
| 2714 | var display = cm.display, snapMargin = textHeight(cm.display); |
| 2715 | if (y1 < 0) y1 = 0; |
| 2716 | var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; |
| 2717 | var docBottom = cm.doc.height + paddingVert(display); |
| 2718 | var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; |
| 2719 | if (y1 < screentop) { |
| 2720 | result.scrollTop = atTop ? 0 : y1; |
| 2721 | } else if (y2 > screentop + screen) { |
| 2722 | var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); |
| 2723 | if (newTop != screentop) result.scrollTop = newTop; |
| 2724 | } |
| 2725 | |
| 2726 | var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; |
| 2727 | x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; |
| 2728 | var gutterw = display.gutters.offsetWidth; |
| 2729 | var atLeft = x1 < gutterw + 10; |
| 2730 | if (x1 < screenleft + gutterw || atLeft) { |
| 2731 | if (atLeft) x1 = 0; |
| 2732 | result.scrollLeft = Math.max(0, x1 - 10 - gutterw); |
| 2733 | } else if (x2 > screenw + screenleft - 3) { |
| 2734 | result.scrollLeft = x2 + 10 - screenw; |
| 2735 | } |
| 2736 | return result; |
| 2737 | } |
| 2738 | |
| 2739 | function updateScrollPos(cm, left, top) { |
| 2740 | cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, |
| 2741 | scrollTop: top == null ? cm.doc.scrollTop : top}; |
| 2742 | } |
| 2743 | |
| 2744 | function addToScrollPos(cm, left, top) { |
| 2745 | var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); |
| 2746 | var scroll = cm.display.scroller; |
| 2747 | pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); |
| 2748 | pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); |
| 2749 | } |
| 2750 | |
| 2751 | // API UTILITIES |
| 2752 | |
| 2753 | function indentLine(cm, n, how, aggressive) { |
| 2754 | var doc = cm.doc; |
| 2755 | if (how == null) how = "add"; |
| 2756 | if (how == "smart") { |
| 2757 | if (!cm.doc.mode.indent) how = "prev"; |
| 2758 | else var state = getStateBefore(cm, n); |
| 2759 | } |
| 2760 | |
| 2761 | var tabSize = cm.options.tabSize; |
| 2762 | var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); |
| 2763 | var curSpaceString = line.text.match(/^\s*/)[0], indentation; |
| 2764 | if (!aggressive && !/\S/.test(line.text)) { |
| 2765 | indentation = 0; |
| 2766 | how = "not"; |
| 2767 | } else if (how == "smart") { |
| 2768 | indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); |
| 2769 | if (indentation == Pass) { |
| 2770 | if (!aggressive) return; |
| 2771 | how = "prev"; |
| 2772 | } |
| 2773 | } |
| 2774 | if (how == "prev") { |
| 2775 | if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); |
| 2776 | else indentation = 0; |
| 2777 | } else if (how == "add") { |
| 2778 | indentation = curSpace + cm.options.indentUnit; |
| 2779 | } else if (how == "subtract") { |
| 2780 | indentation = curSpace - cm.options.indentUnit; |
| 2781 | } else if (typeof how == "number") { |
| 2782 | indentation = curSpace + how; |
| 2783 | } |
| 2784 | indentation = Math.max(0, indentation); |
| 2785 | |
| 2786 | var indentString = "", pos = 0; |
| 2787 | if (cm.options.indentWithTabs) |
| 2788 | for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} |
| 2789 | if (pos < indentation) indentString += spaceStr(indentation - pos); |
| 2790 | |
| 2791 | if (indentString != curSpaceString) |
| 2792 | replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); |
| 2793 | else if (doc.sel.head.line == n && doc.sel.head.ch < curSpaceString.length) |
| 2794 | setSelection(doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length), 1); |
| 2795 | line.stateAfter = null; |
| 2796 | } |
| 2797 | |
| 2798 | function changeLine(cm, handle, op) { |
| 2799 | var no = handle, line = handle, doc = cm.doc; |
| 2800 | if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); |
| 2801 | else no = lineNo(handle); |
| 2802 | if (no == null) return null; |
| 2803 | if (op(line, no)) regChange(cm, no, no + 1); |
| 2804 | else return null; |
| 2805 | return line; |
| 2806 | } |
| 2807 | |
| 2808 | function findPosH(doc, pos, dir, unit, visually) { |
| 2809 | var line = pos.line, ch = pos.ch, origDir = dir; |
| 2810 | var lineObj = getLine(doc, line); |
| 2811 | var possible = true; |
| 2812 | function findNextLine() { |
| 2813 | var l = line + dir; |
| 2814 | if (l < doc.first || l >= doc.first + doc.size) return (possible = false); |
| 2815 | line = l; |
| 2816 | return lineObj = getLine(doc, l); |
| 2817 | } |
| 2818 | function moveOnce(boundToLine) { |
| 2819 | var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); |
| 2820 | if (next == null) { |
| 2821 | if (!boundToLine && findNextLine()) { |
| 2822 | if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); |
| 2823 | else ch = dir < 0 ? lineObj.text.length : 0; |
| 2824 | } else return (possible = false); |
| 2825 | } else ch = next; |
| 2826 | return true; |
| 2827 | } |
| 2828 | |
| 2829 | if (unit == "char") moveOnce(); |
| 2830 | else if (unit == "column") moveOnce(true); |
| 2831 | else if (unit == "word" || unit == "group") { |
| 2832 | var sawType = null, group = unit == "group"; |
| 2833 | for (var first = true;; first = false) { |
| 2834 | if (dir < 0 && !moveOnce(!first)) break; |
| 2835 | var cur = lineObj.text.charAt(ch) || "\n"; |
| 2836 | var type = isWordChar(cur) ? "w" |
| 2837 | : !group ? null |
| 2838 | : /\s/.test(cur) ? null |
| 2839 | : "p"; |
| 2840 | if (sawType && sawType != type) { |
| 2841 | if (dir < 0) {dir = 1; moveOnce();} |
| 2842 | break; |
| 2843 | } |
| 2844 | if (type) sawType = type; |
| 2845 | if (dir > 0 && !moveOnce(!first)) break; |
| 2846 | } |
| 2847 | } |
| 2848 | var result = skipAtomic(doc, Pos(line, ch), origDir, true); |
| 2849 | if (!possible) result.hitSide = true; |
| 2850 | return result; |
| 2851 | } |
| 2852 | |
| 2853 | function findPosV(cm, pos, dir, unit) { |
| 2854 | var doc = cm.doc, x = pos.left, y; |
| 2855 | if (unit == "page") { |
| 2856 | var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); |
| 2857 | y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); |
| 2858 | } else if (unit == "line") { |
| 2859 | y = dir > 0 ? pos.bottom + 3 : pos.top - 3; |
| 2860 | } |
| 2861 | for (;;) { |
| 2862 | var target = coordsChar(cm, x, y); |
| 2863 | if (!target.outside) break; |
| 2864 | if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } |
| 2865 | y += dir * 5; |
| 2866 | } |
| 2867 | return target; |
| 2868 | } |
| 2869 | |
| 2870 | function findWordAt(line, pos) { |
| 2871 | var start = pos.ch, end = pos.ch; |
| 2872 | if (line) { |
| 2873 | if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; |
| 2874 | var startChar = line.charAt(start); |
| 2875 | var check = isWordChar(startChar) ? isWordChar |
| 2876 | : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} |
| 2877 | : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; |
| 2878 | while (start > 0 && check(line.charAt(start - 1))) --start; |
| 2879 | while (end < line.length && check(line.charAt(end))) ++end; |
| 2880 | } |
| 2881 | return {from: Pos(pos.line, start), to: Pos(pos.line, end)}; |
| 2882 | } |
| 2883 | |
| 2884 | function selectLine(cm, line) { |
| 2885 | extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); |
| 2886 | } |
| 2887 | |
| 2888 | // PROTOTYPE |
| 2889 | |
| 2890 | // The publicly visible API. Note that operation(null, f) means |
| 2891 | // 'wrap f in an operation, performed on its `this` parameter' |
| 2892 | |
| 2893 | CodeMirror.prototype = { |
| 2894 | constructor: CodeMirror, |
| 2895 | focus: function(){window.focus(); focusInput(this); fastPoll(this);}, |
| 2896 | |
| 2897 | setOption: function(option, value) { |
| 2898 | var options = this.options, old = options[option]; |
| 2899 | if (options[option] == value && option != "mode") return; |
| 2900 | options[option] = value; |
| 2901 | if (optionHandlers.hasOwnProperty(option)) |
| 2902 | operation(this, optionHandlers[option])(this, value, old); |
| 2903 | }, |
| 2904 | |
| 2905 | getOption: function(option) {return this.options[option];}, |
| 2906 | getDoc: function() {return this.doc;}, |
| 2907 | |
| 2908 | addKeyMap: function(map, bottom) { |
| 2909 | this.state.keyMaps[bottom ? "push" : "unshift"](map); |
| 2910 | }, |
| 2911 | removeKeyMap: function(map) { |
| 2912 | var maps = this.state.keyMaps; |
| 2913 | for (var i = 0; i < maps.length; ++i) |
| 2914 | if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) { |
| 2915 | maps.splice(i, 1); |
| 2916 | return true; |
| 2917 | } |
| 2918 | }, |
| 2919 | |
| 2920 | addOverlay: operation(null, function(spec, options) { |
| 2921 | var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); |
| 2922 | if (mode.startState) throw new Error("Overlays may not be stateful."); |
| 2923 | this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); |
| 2924 | this.state.modeGen++; |
| 2925 | regChange(this); |
| 2926 | }), |
| 2927 | removeOverlay: operation(null, function(spec) { |
| 2928 | var overlays = this.state.overlays; |
| 2929 | for (var i = 0; i < overlays.length; ++i) { |
| 2930 | var cur = overlays[i].modeSpec; |
| 2931 | if (cur == spec || typeof spec == "string" && cur.name == spec) { |
| 2932 | overlays.splice(i, 1); |
| 2933 | this.state.modeGen++; |
| 2934 | regChange(this); |
| 2935 | return; |
| 2936 | } |
| 2937 | } |
| 2938 | }), |
| 2939 | |
| 2940 | indentLine: operation(null, function(n, dir, aggressive) { |
| 2941 | if (typeof dir != "string" && typeof dir != "number") { |
| 2942 | if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; |
| 2943 | else dir = dir ? "add" : "subtract"; |
| 2944 | } |
| 2945 | if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); |
| 2946 | }), |
| 2947 | indentSelection: operation(null, function(how) { |
| 2948 | var sel = this.doc.sel; |
| 2949 | if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how, true); |
| 2950 | var e = sel.to.line - (sel.to.ch ? 0 : 1); |
| 2951 | for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); |
| 2952 | }), |
| 2953 | |
| 2954 | // Fetch the parser token for a given character. Useful for hacks |
| 2955 | // that want to inspect the mode state (say, for completion). |
| 2956 | getTokenAt: function(pos, precise) { |
| 2957 | var doc = this.doc; |
| 2958 | pos = clipPos(doc, pos); |
| 2959 | var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode; |
| 2960 | var line = getLine(doc, pos.line); |
| 2961 | var stream = new StringStream(line.text, this.options.tabSize); |
| 2962 | while (stream.pos < pos.ch && !stream.eol()) { |
| 2963 | stream.start = stream.pos; |
| 2964 | var style = mode.token(stream, state); |
| 2965 | } |
| 2966 | return {start: stream.start, |
| 2967 | end: stream.pos, |
| 2968 | string: stream.current(), |
| 2969 | className: style || null, // Deprecated, use 'type' instead |
| 2970 | type: style || null, |
| 2971 | state: state}; |
| 2972 | }, |
| 2973 | |
| 2974 | getTokenTypeAt: function(pos) { |
| 2975 | pos = clipPos(this.doc, pos); |
| 2976 | var styles = getLineStyles(this, getLine(this.doc, pos.line)); |
| 2977 | var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; |
| 2978 | if (ch == 0) return styles[2]; |
| 2979 | for (;;) { |
| 2980 | var mid = (before + after) >> 1; |
| 2981 | if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; |
| 2982 | else if (styles[mid * 2 + 1] < ch) before = mid + 1; |
| 2983 | else return styles[mid * 2 + 2]; |
| 2984 | } |
| 2985 | }, |
| 2986 | |
| 2987 | getModeAt: function(pos) { |
| 2988 | var mode = this.doc.mode; |
| 2989 | if (!mode.innerMode) return mode; |
| 2990 | return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; |
| 2991 | }, |
| 2992 | |
| 2993 | getHelper: function(pos, type) { |
| 2994 | return this.getHelpers(pos, type)[0]; |
| 2995 | }, |
| 2996 | |
| 2997 | getHelpers: function(pos, type) { |
| 2998 | var found = []; |
| 2999 | if (!helpers.hasOwnProperty(type)) return helpers; |
| 3000 | var help = helpers[type], mode = this.getModeAt(pos); |
| 3001 | if (typeof mode[type] == "string") { |
| 3002 | if (help[mode[type]]) found.push(help[mode[type]]); |
| 3003 | } else if (mode[type]) { |
| 3004 | for (var i = 0; i < mode[type].length; i++) { |
| 3005 | var val = help[mode[type][i]]; |
| 3006 | if (val) found.push(val); |
| 3007 | } |
| 3008 | } else if (mode.helperType && help[mode.helperType]) { |
| 3009 | found.push(help[mode.helperType]); |
| 3010 | } else if (help[mode.name]) { |
| 3011 | found.push(help[mode.name]); |
| 3012 | } |
| 3013 | for (var i = 0; i < help._global.length; i++) { |
| 3014 | var cur = help._global[i]; |
| 3015 | if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) |
| 3016 | found.push(cur.val); |
| 3017 | } |
| 3018 | return found; |
| 3019 | }, |
| 3020 | |
| 3021 | getStateAfter: function(line, precise) { |
| 3022 | var doc = this.doc; |
| 3023 | line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); |
| 3024 | return getStateBefore(this, line + 1, precise); |
| 3025 | }, |
| 3026 | |
| 3027 | cursorCoords: function(start, mode) { |
| 3028 | var pos, sel = this.doc.sel; |
| 3029 | if (start == null) pos = sel.head; |
| 3030 | else if (typeof start == "object") pos = clipPos(this.doc, start); |
| 3031 | else pos = start ? sel.from : sel.to; |
| 3032 | return cursorCoords(this, pos, mode || "page"); |
| 3033 | }, |
| 3034 | |
| 3035 | charCoords: function(pos, mode) { |
| 3036 | return charCoords(this, clipPos(this.doc, pos), mode || "page"); |
| 3037 | }, |
| 3038 | |
| 3039 | coordsChar: function(coords, mode) { |
| 3040 | coords = fromCoordSystem(this, coords, mode || "page"); |
| 3041 | return coordsChar(this, coords.left, coords.top); |
| 3042 | }, |
| 3043 | |
| 3044 | lineAtHeight: function(height, mode) { |
| 3045 | height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; |
| 3046 | return lineAtHeight(this.doc, height + this.display.viewOffset); |
| 3047 | }, |
| 3048 | heightAtLine: function(line, mode) { |
| 3049 | var end = false, last = this.doc.first + this.doc.size - 1; |
| 3050 | if (line < this.doc.first) line = this.doc.first; |
| 3051 | else if (line > last) { line = last; end = true; } |
| 3052 | var lineObj = getLine(this.doc, line); |
| 3053 | return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + |
| 3054 | (end ? lineObj.height : 0); |
| 3055 | }, |
| 3056 | |
| 3057 | defaultTextHeight: function() { return textHeight(this.display); }, |
| 3058 | defaultCharWidth: function() { return charWidth(this.display); }, |
| 3059 | |
| 3060 | setGutterMarker: operation(null, function(line, gutterID, value) { |
| 3061 | return changeLine(this, line, function(line) { |
| 3062 | var markers = line.gutterMarkers || (line.gutterMarkers = {}); |
| 3063 | markers[gutterID] = value; |
| 3064 | if (!value && isEmpty(markers)) line.gutterMarkers = null; |
| 3065 | return true; |
| 3066 | }); |
| 3067 | }), |
| 3068 | |
| 3069 | clearGutter: operation(null, function(gutterID) { |
| 3070 | var cm = this, doc = cm.doc, i = doc.first; |
| 3071 | doc.iter(function(line) { |
| 3072 | if (line.gutterMarkers && line.gutterMarkers[gutterID]) { |
| 3073 | line.gutterMarkers[gutterID] = null; |
| 3074 | regChange(cm, i, i + 1); |
| 3075 | if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; |
| 3076 | } |
| 3077 | ++i; |
| 3078 | }); |
| 3079 | }), |
| 3080 | |
| 3081 | addLineClass: operation(null, function(handle, where, cls) { |
| 3082 | return changeLine(this, handle, function(line) { |
| 3083 | var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; |
| 3084 | if (!line[prop]) line[prop] = cls; |
| 3085 | else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false; |
| 3086 | else line[prop] += " " + cls; |
| 3087 | return true; |
| 3088 | }); |
| 3089 | }), |
| 3090 | |
| 3091 | removeLineClass: operation(null, function(handle, where, cls) { |
| 3092 | return changeLine(this, handle, function(line) { |
| 3093 | var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; |
| 3094 | var cur = line[prop]; |
| 3095 | if (!cur) return false; |
| 3096 | else if (cls == null) line[prop] = null; |
| 3097 | else { |
| 3098 | var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); |
| 3099 | if (!found) return false; |
| 3100 | var end = found.index + found[0].length; |
| 3101 | line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; |
| 3102 | } |
| 3103 | return true; |
| 3104 | }); |
| 3105 | }), |
| 3106 | |
| 3107 | addLineWidget: operation(null, function(handle, node, options) { |
| 3108 | return addLineWidget(this, handle, node, options); |
| 3109 | }), |
| 3110 | |
| 3111 | removeLineWidget: function(widget) { widget.clear(); }, |
| 3112 | |
| 3113 | lineInfo: function(line) { |
| 3114 | if (typeof line == "number") { |
| 3115 | if (!isLine(this.doc, line)) return null; |
| 3116 | var n = line; |
| 3117 | line = getLine(this.doc, line); |
| 3118 | if (!line) return null; |
| 3119 | } else { |
| 3120 | var n = lineNo(line); |
| 3121 | if (n == null) return null; |
| 3122 | } |
| 3123 | return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, |
| 3124 | textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, |
| 3125 | widgets: line.widgets}; |
| 3126 | }, |
| 3127 | |
| 3128 | getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};}, |
| 3129 | |
| 3130 | addWidget: function(pos, node, scroll, vert, horiz) { |
| 3131 | var display = this.display; |
| 3132 | pos = cursorCoords(this, clipPos(this.doc, pos)); |
| 3133 | var top = pos.bottom, left = pos.left; |
| 3134 | node.style.position = "absolute"; |
| 3135 | display.sizer.appendChild(node); |
| 3136 | if (vert == "over") { |
| 3137 | top = pos.top; |
| 3138 | } else if (vert == "above" || vert == "near") { |
| 3139 | var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), |
| 3140 | hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); |
| 3141 | // Default to positioning above (if specified and possible); otherwise default to positioning below |
| 3142 | if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) |
| 3143 | top = pos.top - node.offsetHeight; |
| 3144 | else if (pos.bottom + node.offsetHeight <= vspace) |
| 3145 | top = pos.bottom; |
| 3146 | if (left + node.offsetWidth > hspace) |
| 3147 | left = hspace - node.offsetWidth; |
| 3148 | } |
| 3149 | node.style.top = top + "px"; |
| 3150 | node.style.left = node.style.right = ""; |
| 3151 | if (horiz == "right") { |
| 3152 | left = display.sizer.clientWidth - node.offsetWidth; |
| 3153 | node.style.right = "0px"; |
| 3154 | } else { |
| 3155 | if (horiz == "left") left = 0; |
| 3156 | else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; |
| 3157 | node.style.left = left + "px"; |
| 3158 | } |
| 3159 | if (scroll) |
| 3160 | scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); |
| 3161 | }, |
| 3162 | |
| 3163 | triggerOnKeyDown: operation(null, onKeyDown), |
| 3164 | triggerOnKeyPress: operation(null, onKeyPress), |
| 3165 | triggerOnKeyUp: operation(null, onKeyUp), |
| 3166 | |
| 3167 | execCommand: function(cmd) { |
| 3168 | if (commands.hasOwnProperty(cmd)) |
| 3169 | return commands[cmd](this); |
| 3170 | }, |
| 3171 | |
| 3172 | findPosH: function(from, amount, unit, visually) { |
| 3173 | var dir = 1; |
| 3174 | if (amount < 0) { dir = -1; amount = -amount; } |
| 3175 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
| 3176 | cur = findPosH(this.doc, cur, dir, unit, visually); |
| 3177 | if (cur.hitSide) break; |
| 3178 | } |
| 3179 | return cur; |
| 3180 | }, |
| 3181 | |
| 3182 | moveH: operation(null, function(dir, unit) { |
| 3183 | var sel = this.doc.sel, pos; |
| 3184 | if (sel.shift || sel.extend || posEq(sel.from, sel.to)) |
| 3185 | pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); |
| 3186 | else |
| 3187 | pos = dir < 0 ? sel.from : sel.to; |
| 3188 | extendSelection(this.doc, pos, pos, dir); |
| 3189 | }), |
| 3190 | |
| 3191 | deleteH: operation(null, function(dir, unit) { |
| 3192 | var sel = this.doc.sel; |
| 3193 | if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); |
| 3194 | else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); |
| 3195 | this.curOp.userSelChange = true; |
| 3196 | }), |
| 3197 | |
| 3198 | findPosV: function(from, amount, unit, goalColumn) { |
| 3199 | var dir = 1, x = goalColumn; |
| 3200 | if (amount < 0) { dir = -1; amount = -amount; } |
| 3201 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
| 3202 | var coords = cursorCoords(this, cur, "div"); |
| 3203 | if (x == null) x = coords.left; |
| 3204 | else coords.left = x; |
| 3205 | cur = findPosV(this, coords, dir, unit); |
| 3206 | if (cur.hitSide) break; |
| 3207 | } |
| 3208 | return cur; |
| 3209 | }, |
| 3210 | |
| 3211 | moveV: operation(null, function(dir, unit) { |
| 3212 | var sel = this.doc.sel, target, goal; |
| 3213 | if (sel.shift || sel.extend || posEq(sel.from, sel.to)) { |
| 3214 | var pos = cursorCoords(this, sel.head, "div"); |
| 3215 | if (sel.goalColumn != null) pos.left = sel.goalColumn; |
| 3216 | target = findPosV(this, pos, dir, unit); |
| 3217 | if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); |
| 3218 | goal = pos.left; |
| 3219 | } else { |
| 3220 | target = dir < 0 ? sel.from : sel.to; |
| 3221 | } |
| 3222 | extendSelection(this.doc, target, target, dir); |
| 3223 | if (goal != null) sel.goalColumn = goal; |
| 3224 | }), |
| 3225 | |
| 3226 | toggleOverwrite: function(value) { |
| 3227 | if (value != null && value == this.state.overwrite) return; |
| 3228 | if (this.state.overwrite = !this.state.overwrite) |
| 3229 | this.display.cursor.className += " CodeMirror-overwrite"; |
| 3230 | else |
| 3231 | this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); |
| 3232 | |
| 3233 | signal(this, "overwriteToggle", this, this.state.overwrite); |
| 3234 | }, |
| 3235 | hasFocus: function() { return document.activeElement == this.display.input; }, |
| 3236 | |
| 3237 | scrollTo: operation(null, function(x, y) { |
| 3238 | updateScrollPos(this, x, y); |
| 3239 | }), |
| 3240 | getScrollInfo: function() { |
| 3241 | var scroller = this.display.scroller, co = scrollerCutOff; |
| 3242 | return {left: scroller.scrollLeft, top: scroller.scrollTop, |
| 3243 | height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, |
| 3244 | clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; |
| 3245 | }, |
| 3246 | |
| 3247 | scrollIntoView: operation(null, function(range, margin) { |
| 3248 | if (range == null) range = {from: this.doc.sel.head, to: null}; |
| 3249 | else if (typeof range == "number") range = {from: Pos(range, 0), to: null}; |
| 3250 | else if (range.from == null) range = {from: range, to: null}; |
| 3251 | if (!range.to) range.to = range.from; |
| 3252 | if (!margin) margin = 0; |
| 3253 | |
| 3254 | var coords = range; |
| 3255 | if (range.from.line != null) { |
| 3256 | this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin}; |
| 3257 | coords = {from: cursorCoords(this, range.from), |
| 3258 | to: cursorCoords(this, range.to)}; |
| 3259 | } |
| 3260 | var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left), |
| 3261 | Math.min(coords.from.top, coords.to.top) - margin, |
| 3262 | Math.max(coords.from.right, coords.to.right), |
| 3263 | Math.max(coords.from.bottom, coords.to.bottom) + margin); |
| 3264 | updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); |
| 3265 | }), |
| 3266 | |
| 3267 | setSize: operation(null, function(width, height) { |
| 3268 | function interpret(val) { |
| 3269 | return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; |
| 3270 | } |
| 3271 | if (width != null) this.display.wrapper.style.width = interpret(width); |
| 3272 | if (height != null) this.display.wrapper.style.height = interpret(height); |
| 3273 | if (this.options.lineWrapping) |
| 3274 | this.display.measureLineCache.length = this.display.measureLineCachePos = 0; |
| 3275 | this.curOp.forceUpdate = true; |
| 3276 | signal(this, "refresh", this); |
| 3277 | }), |
| 3278 | |
| 3279 | operation: function(f){return runInOp(this, f);}, |
| 3280 | |
| 3281 | refresh: operation(null, function() { |
| 3282 | var oldHeight = this.display.cachedTextHeight; |
| 3283 | clearCaches(this); |
| 3284 | updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); |
| 3285 | regChange(this); |
| 3286 | if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) |
| 3287 | estimateLineHeights(this); |
| 3288 | signal(this, "refresh", this); |
| 3289 | }), |
| 3290 | |
| 3291 | swapDoc: operation(null, function(doc) { |
| 3292 | var old = this.doc; |
| 3293 | old.cm = null; |
| 3294 | attachDoc(this, doc); |
| 3295 | clearCaches(this); |
| 3296 | resetInput(this, true); |
| 3297 | updateScrollPos(this, doc.scrollLeft, doc.scrollTop); |
| 3298 | signalLater(this, "swapDoc", this, old); |
| 3299 | return old; |
| 3300 | }), |
| 3301 | |
| 3302 | getInputField: function(){return this.display.input;}, |
| 3303 | getWrapperElement: function(){return this.display.wrapper;}, |
| 3304 | getScrollerElement: function(){return this.display.scroller;}, |
| 3305 | getGutterElement: function(){return this.display.gutters;} |
| 3306 | }; |
| 3307 | eventMixin(CodeMirror); |
| 3308 | |
| 3309 | // OPTION DEFAULTS |
| 3310 | |
| 3311 | var optionHandlers = CodeMirror.optionHandlers = {}; |
| 3312 | |
| 3313 | // The default configuration options. |
| 3314 | var defaults = CodeMirror.defaults = {}; |
| 3315 | |
| 3316 | function option(name, deflt, handle, notOnInit) { |
| 3317 | CodeMirror.defaults[name] = deflt; |
| 3318 | if (handle) optionHandlers[name] = |
| 3319 | notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; |
| 3320 | } |
| 3321 | |
| 3322 | var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; |
| 3323 | |
| 3324 | // These two are, on init, called from the constructor because they |
| 3325 | // have to be initialized before the editor can start at all. |
| 3326 | option("value", "", function(cm, val) { |
| 3327 | cm.setValue(val); |
| 3328 | }, true); |
| 3329 | option("mode", null, function(cm, val) { |
| 3330 | cm.doc.modeOption = val; |
| 3331 | loadMode(cm); |
| 3332 | }, true); |
| 3333 | |
| 3334 | option("indentUnit", 2, loadMode, true); |
| 3335 | option("indentWithTabs", false); |
| 3336 | option("smartIndent", true); |
| 3337 | option("tabSize", 4, function(cm) { |
| 3338 | resetModeState(cm); |
| 3339 | clearCaches(cm); |
| 3340 | regChange(cm); |
| 3341 | }, true); |
| 3342 | option("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) { |
| 3343 | cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); |
| 3344 | cm.refresh(); |
| 3345 | }, true); |
| 3346 | option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); |
| 3347 | option("electricChars", true); |
| 3348 | option("rtlMoveVisually", !windows); |
| 3349 | option("wholeLineUpdateBefore", true); |
| 3350 | |
| 3351 | option("theme", "default", function(cm) { |
| 3352 | themeChanged(cm); |
| 3353 | guttersChanged(cm); |
| 3354 | }, true); |
| 3355 | option("keyMap", "default", keyMapChanged); |
| 3356 | option("extraKeys", null); |
| 3357 | |
| 3358 | option("onKeyEvent", null); |
| 3359 | option("onDragEvent", null); |
| 3360 | |
| 3361 | option("lineWrapping", false, wrappingChanged, true); |
| 3362 | option("gutters", [], function(cm) { |
| 3363 | setGuttersForLineNumbers(cm.options); |
| 3364 | guttersChanged(cm); |
| 3365 | }, true); |
| 3366 | option("fixedGutter", true, function(cm, val) { |
| 3367 | cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; |
| 3368 | cm.refresh(); |
| 3369 | }, true); |
| 3370 | option("coverGutterNextToScrollbar", false, updateScrollbars, true); |
| 3371 | option("lineNumbers", false, function(cm) { |
| 3372 | setGuttersForLineNumbers(cm.options); |
| 3373 | guttersChanged(cm); |
| 3374 | }, true); |
| 3375 | option("firstLineNumber", 1, guttersChanged, true); |
| 3376 | option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); |
| 3377 | option("showCursorWhenSelecting", false, updateSelection, true); |
| 3378 | |
| 3379 | option("resetSelectionOnContextMenu", true); |
| 3380 | |
| 3381 | option("readOnly", false, function(cm, val) { |
| 3382 | if (val == "nocursor") { |
| 3383 | onBlur(cm); |
| 3384 | cm.display.input.blur(); |
| 3385 | cm.display.disabled = true; |
| 3386 | } else { |
| 3387 | cm.display.disabled = false; |
| 3388 | if (!val) resetInput(cm, true); |
| 3389 | } |
| 3390 | }); |
| 3391 | option("disableInput", false, function(cm, val) {if (!val) resetInput(cm, true);}, true); |
| 3392 | option("dragDrop", true); |
| 3393 | |
| 3394 | option("cursorBlinkRate", 530); |
| 3395 | option("cursorScrollMargin", 0); |
| 3396 | option("cursorHeight", 1); |
| 3397 | option("workTime", 100); |
| 3398 | option("workDelay", 100); |
| 3399 | option("flattenSpans", true, resetModeState, true); |
| 3400 | option("addModeClass", false, resetModeState, true); |
| 3401 | option("pollInterval", 100); |
| 3402 | option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); |
| 3403 | option("historyEventDelay", 500); |
| 3404 | option("viewportMargin", 10, function(cm){cm.refresh();}, true); |
| 3405 | option("maxHighlightLength", 10000, resetModeState, true); |
| 3406 | option("crudeMeasuringFrom", 10000); |
| 3407 | option("moveInputWithCursor", true, function(cm, val) { |
| 3408 | if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; |
| 3409 | }); |
| 3410 | |
| 3411 | option("tabindex", null, function(cm, val) { |
| 3412 | cm.display.input.tabIndex = val || ""; |
| 3413 | }); |
| 3414 | option("autofocus", null); |
| 3415 | |
| 3416 | // MODE DEFINITION AND QUERYING |
| 3417 | |
| 3418 | // Known modes, by name and by MIME |
| 3419 | var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; |
| 3420 | |
| 3421 | CodeMirror.defineMode = function(name, mode) { |
| 3422 | if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; |
| 3423 | if (arguments.length > 2) { |
| 3424 | mode.dependencies = []; |
| 3425 | for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); |
| 3426 | } |
| 3427 | modes[name] = mode; |
| 3428 | }; |
| 3429 | |
| 3430 | CodeMirror.defineMIME = function(mime, spec) { |
| 3431 | mimeModes[mime] = spec; |
| 3432 | }; |
| 3433 | |
| 3434 | CodeMirror.resolveMode = function(spec) { |
| 3435 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { |
| 3436 | spec = mimeModes[spec]; |
| 3437 | } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { |
| 3438 | var found = mimeModes[spec.name]; |
| 3439 | spec = createObj(found, spec); |
| 3440 | spec.name = found.name; |
| 3441 | } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { |
| 3442 | return CodeMirror.resolveMode("application/xml"); |
| 3443 | } |
| 3444 | if (typeof spec == "string") return {name: spec}; |
| 3445 | else return spec || {name: "null"}; |
| 3446 | }; |
| 3447 | |
| 3448 | CodeMirror.getMode = function(options, spec) { |
| 3449 | var spec = CodeMirror.resolveMode(spec); |
| 3450 | var mfactory = modes[spec.name]; |
| 3451 | if (!mfactory) return CodeMirror.getMode(options, "text/plain"); |
| 3452 | var modeObj = mfactory(options, spec); |
| 3453 | if (modeExtensions.hasOwnProperty(spec.name)) { |
| 3454 | var exts = modeExtensions[spec.name]; |
| 3455 | for (var prop in exts) { |
| 3456 | if (!exts.hasOwnProperty(prop)) continue; |
| 3457 | if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; |
| 3458 | modeObj[prop] = exts[prop]; |
| 3459 | } |
| 3460 | } |
| 3461 | modeObj.name = spec.name; |
| 3462 | if (spec.helperType) modeObj.helperType = spec.helperType; |
| 3463 | if (spec.modeProps) for (var prop in spec.modeProps) |
| 3464 | modeObj[prop] = spec.modeProps[prop]; |
| 3465 | |
| 3466 | return modeObj; |
| 3467 | }; |
| 3468 | |
| 3469 | CodeMirror.defineMode("null", function() { |
| 3470 | return {token: function(stream) {stream.skipToEnd();}}; |
| 3471 | }); |
| 3472 | CodeMirror.defineMIME("text/plain", "null"); |
| 3473 | |
| 3474 | var modeExtensions = CodeMirror.modeExtensions = {}; |
| 3475 | CodeMirror.extendMode = function(mode, properties) { |
| 3476 | var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); |
| 3477 | copyObj(properties, exts); |
| 3478 | }; |
| 3479 | |
| 3480 | // EXTENSIONS |
| 3481 | |
| 3482 | CodeMirror.defineExtension = function(name, func) { |
| 3483 | CodeMirror.prototype[name] = func; |
| 3484 | }; |
| 3485 | CodeMirror.defineDocExtension = function(name, func) { |
| 3486 | Doc.prototype[name] = func; |
| 3487 | }; |
| 3488 | CodeMirror.defineOption = option; |
| 3489 | |
| 3490 | var initHooks = []; |
| 3491 | CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; |
| 3492 | |
| 3493 | var helpers = CodeMirror.helpers = {}; |
| 3494 | CodeMirror.registerHelper = function(type, name, value) { |
| 3495 | if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}; |
| 3496 | helpers[type][name] = value; |
| 3497 | }; |
| 3498 | CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { |
| 3499 | CodeMirror.registerHelper(type, name, value); |
| 3500 | helpers[type]._global.push({pred: predicate, val: value}); |
| 3501 | }; |
| 3502 | |
| 3503 | // UTILITIES |
| 3504 | |
| 3505 | CodeMirror.isWordChar = isWordChar; |
| 3506 | |
| 3507 | // MODE STATE HANDLING |
| 3508 | |
| 3509 | // Utility functions for working with state. Exported because modes |
| 3510 | // sometimes need to do this. |
| 3511 | function copyState(mode, state) { |
| 3512 | if (state === true) return state; |
| 3513 | if (mode.copyState) return mode.copyState(state); |
| 3514 | var nstate = {}; |
| 3515 | for (var n in state) { |
| 3516 | var val = state[n]; |
| 3517 | if (val instanceof Array) val = val.concat([]); |
| 3518 | nstate[n] = val; |
| 3519 | } |
| 3520 | return nstate; |
| 3521 | } |
| 3522 | CodeMirror.copyState = copyState; |
| 3523 | |
| 3524 | function startState(mode, a1, a2) { |
| 3525 | return mode.startState ? mode.startState(a1, a2) : true; |
| 3526 | } |
| 3527 | CodeMirror.startState = startState; |
| 3528 | |
| 3529 | CodeMirror.innerMode = function(mode, state) { |
| 3530 | while (mode.innerMode) { |
| 3531 | var info = mode.innerMode(state); |
| 3532 | if (!info || info.mode == mode) break; |
| 3533 | state = info.state; |
| 3534 | mode = info.mode; |
| 3535 | } |
| 3536 | return info || {mode: mode, state: state}; |
| 3537 | }; |
| 3538 | |
| 3539 | // STANDARD COMMANDS |
| 3540 | |
| 3541 | var commands = CodeMirror.commands = { |
| 3542 | selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));}, |
| 3543 | killLine: function(cm) { |
| 3544 | var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); |
| 3545 | if (!sel && cm.getLine(from.line).length == from.ch) |
| 3546 | cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); |
| 3547 | else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); |
| 3548 | }, |
| 3549 | deleteLine: function(cm) { |
| 3550 | var l = cm.getCursor().line; |
| 3551 | cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); |
| 3552 | }, |
| 3553 | delLineLeft: function(cm) { |
| 3554 | var cur = cm.getCursor(); |
| 3555 | cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); |
| 3556 | }, |
| 3557 | undo: function(cm) {cm.undo();}, |
| 3558 | redo: function(cm) {cm.redo();}, |
| 3559 | goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, |
| 3560 | goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, |
| 3561 | goLineStart: function(cm) { |
| 3562 | cm.extendSelection(lineStart(cm, cm.getCursor().line)); |
| 3563 | }, |
| 3564 | goLineStartSmart: function(cm) { |
| 3565 | var cur = cm.getCursor(), start = lineStart(cm, cur.line); |
| 3566 | var line = cm.getLineHandle(start.line); |
| 3567 | var order = getOrder(line); |
| 3568 | if (!order || order[0].level == 0) { |
| 3569 | var firstNonWS = Math.max(0, line.text.search(/\S/)); |
| 3570 | var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; |
| 3571 | cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); |
| 3572 | } else cm.extendSelection(start); |
| 3573 | }, |
| 3574 | goLineEnd: function(cm) { |
| 3575 | cm.extendSelection(lineEnd(cm, cm.getCursor().line)); |
| 3576 | }, |
| 3577 | goLineRight: function(cm) { |
| 3578 | var top = cm.charCoords(cm.getCursor(), "div").top + 5; |
| 3579 | cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); |
| 3580 | }, |
| 3581 | goLineLeft: function(cm) { |
| 3582 | var top = cm.charCoords(cm.getCursor(), "div").top + 5; |
| 3583 | cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); |
| 3584 | }, |
| 3585 | goLineUp: function(cm) {cm.moveV(-1, "line");}, |
| 3586 | goLineDown: function(cm) {cm.moveV(1, "line");}, |
| 3587 | goPageUp: function(cm) {cm.moveV(-1, "page");}, |
| 3588 | goPageDown: function(cm) {cm.moveV(1, "page");}, |
| 3589 | goCharLeft: function(cm) {cm.moveH(-1, "char");}, |
| 3590 | goCharRight: function(cm) {cm.moveH(1, "char");}, |
| 3591 | goColumnLeft: function(cm) {cm.moveH(-1, "column");}, |
| 3592 | goColumnRight: function(cm) {cm.moveH(1, "column");}, |
| 3593 | goWordLeft: function(cm) {cm.moveH(-1, "word");}, |
| 3594 | goGroupRight: function(cm) {cm.moveH(1, "group");}, |
| 3595 | goGroupLeft: function(cm) {cm.moveH(-1, "group");}, |
| 3596 | goWordRight: function(cm) {cm.moveH(1, "word");}, |
| 3597 | delCharBefore: function(cm) {cm.deleteH(-1, "char");}, |
| 3598 | delCharAfter: function(cm) {cm.deleteH(1, "char");}, |
| 3599 | delWordBefore: function(cm) {cm.deleteH(-1, "word");}, |
| 3600 | delWordAfter: function(cm) {cm.deleteH(1, "word");}, |
| 3601 | delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, |
| 3602 | delGroupAfter: function(cm) {cm.deleteH(1, "group");}, |
| 3603 | indentAuto: function(cm) {cm.indentSelection("smart");}, |
| 3604 | indentMore: function(cm) {cm.indentSelection("add");}, |
| 3605 | indentLess: function(cm) {cm.indentSelection("subtract");}, |
| 3606 | insertTab: function(cm) { |
| 3607 | cm.replaceSelection("\t", "end", "+input"); |
| 3608 | }, |
| 3609 | defaultTab: function(cm) { |
| 3610 | if (cm.somethingSelected()) cm.indentSelection("add"); |
| 3611 | else cm.replaceSelection("\t", "end", "+input"); |
| 3612 | }, |
| 3613 | transposeChars: function(cm) { |
| 3614 | var cur = cm.getCursor(), line = cm.getLine(cur.line); |
| 3615 | if (cur.ch > 0 && cur.ch < line.length - 1) |
| 3616 | cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), |
| 3617 | Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); |
| 3618 | }, |
| 3619 | newlineAndIndent: function(cm) { |
| 3620 | operation(cm, function() { |
| 3621 | cm.replaceSelection("\n", "end", "+input"); |
| 3622 | cm.indentLine(cm.getCursor().line, null, true); |
| 3623 | })(); |
| 3624 | }, |
| 3625 | toggleOverwrite: function(cm) {cm.toggleOverwrite();} |
| 3626 | }; |
| 3627 | |
| 3628 | // STANDARD KEYMAPS |
| 3629 | |
| 3630 | var keyMap = CodeMirror.keyMap = {}; |
| 3631 | keyMap.basic = { |
| 3632 | "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", |
| 3633 | "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", |
| 3634 | "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", |
| 3635 | "Tab": "defaultTab", "Shift-Tab": "indentAuto", |
| 3636 | "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" |
| 3637 | }; |
| 3638 | // Note that the save and find-related commands aren't defined by |
| 3639 | // default. Unknown commands are simply ignored. |
| 3640 | keyMap.pcDefault = { |
| 3641 | "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", |
| 3642 | "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", |
| 3643 | "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", |
| 3644 | "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", |
| 3645 | "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", |
| 3646 | "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", |
| 3647 | fallthrough: "basic" |
| 3648 | }; |
| 3649 | keyMap.macDefault = { |
| 3650 | "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", |
| 3651 | "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", |
| 3652 | "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore", |
| 3653 | "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", |
| 3654 | "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", |
| 3655 | "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", |
| 3656 | fallthrough: ["basic", "emacsy"] |
| 3657 | }; |
| 3658 | keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; |
| 3659 | keyMap.emacsy = { |
| 3660 | "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", |
| 3661 | "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", |
| 3662 | "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", |
| 3663 | "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" |
| 3664 | }; |
| 3665 | |
| 3666 | // KEYMAP DISPATCH |
| 3667 | |
| 3668 | function getKeyMap(val) { |
| 3669 | if (typeof val == "string") return keyMap[val]; |
| 3670 | else return val; |
| 3671 | } |
| 3672 | |
| 3673 | function lookupKey(name, maps, handle) { |
| 3674 | function lookup(map) { |
| 3675 | map = getKeyMap(map); |
| 3676 | var found = map[name]; |
| 3677 | if (found === false) return "stop"; |
| 3678 | if (found != null && handle(found)) return true; |
| 3679 | if (map.nofallthrough) return "stop"; |
| 3680 | |
| 3681 | var fallthrough = map.fallthrough; |
| 3682 | if (fallthrough == null) return false; |
| 3683 | if (Object.prototype.toString.call(fallthrough) != "[object Array]") |
| 3684 | return lookup(fallthrough); |
| 3685 | for (var i = 0, e = fallthrough.length; i < e; ++i) { |
| 3686 | var done = lookup(fallthrough[i]); |
| 3687 | if (done) return done; |
| 3688 | } |
| 3689 | return false; |
| 3690 | } |
| 3691 | |
| 3692 | for (var i = 0; i < maps.length; ++i) { |
| 3693 | var done = lookup(maps[i]); |
| 3694 | if (done) return done != "stop"; |
| 3695 | } |
| 3696 | } |
| 3697 | function isModifierKey(event) { |
| 3698 | var name = keyNames[event.keyCode]; |
| 3699 | return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; |
| 3700 | } |
| 3701 | function keyName(event, noShift) { |
| 3702 | if (opera && event.keyCode == 34 && event["char"]) return false; |
| 3703 | var name = keyNames[event.keyCode]; |
| 3704 | if (name == null || event.altGraphKey) return false; |
| 3705 | if (event.altKey) name = "Alt-" + name; |
| 3706 | if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; |
| 3707 | if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; |
| 3708 | if (!noShift && event.shiftKey) name = "Shift-" + name; |
| 3709 | return name; |
| 3710 | } |
| 3711 | CodeMirror.lookupKey = lookupKey; |
| 3712 | CodeMirror.isModifierKey = isModifierKey; |
| 3713 | CodeMirror.keyName = keyName; |
| 3714 | |
| 3715 | // FROMTEXTAREA |
| 3716 | |
| 3717 | CodeMirror.fromTextArea = function(textarea, options) { |
| 3718 | if (!options) options = {}; |
| 3719 | options.value = textarea.value; |
| 3720 | if (!options.tabindex && textarea.tabindex) |
| 3721 | options.tabindex = textarea.tabindex; |
| 3722 | if (!options.placeholder && textarea.placeholder) |
| 3723 | options.placeholder = textarea.placeholder; |
| 3724 | // Set autofocus to true if this textarea is focused, or if it has |
| 3725 | // autofocus and no other element is focused. |
| 3726 | if (options.autofocus == null) { |
| 3727 | var hasFocus = document.body; |
| 3728 | // doc.activeElement occasionally throws on IE |
| 3729 | try { hasFocus = document.activeElement; } catch(e) {} |
| 3730 | options.autofocus = hasFocus == textarea || |
| 3731 | textarea.getAttribute("autofocus") != null && hasFocus == document.body; |
| 3732 | } |
| 3733 | |
| 3734 | function save() {textarea.value = cm.getValue();} |
| 3735 | if (textarea.form) { |
| 3736 | on(textarea.form, "submit", save); |
| 3737 | // Deplorable hack to make the submit method do the right thing. |
| 3738 | if (!options.leaveSubmitMethodAlone) { |
| 3739 | var form = textarea.form, realSubmit = form.submit; |
| 3740 | try { |
| 3741 | var wrappedSubmit = form.submit = function() { |
| 3742 | save(); |
| 3743 | form.submit = realSubmit; |
| 3744 | form.submit(); |
| 3745 | form.submit = wrappedSubmit; |
| 3746 | }; |
| 3747 | } catch(e) {} |
| 3748 | } |
| 3749 | } |
| 3750 | |
| 3751 | textarea.style.display = "none"; |
| 3752 | var cm = CodeMirror(function(node) { |
| 3753 | textarea.parentNode.insertBefore(node, textarea.nextSibling); |
| 3754 | }, options); |
| 3755 | cm.save = save; |
| 3756 | cm.getTextArea = function() { return textarea; }; |
| 3757 | cm.toTextArea = function() { |
| 3758 | save(); |
| 3759 | textarea.parentNode.removeChild(cm.getWrapperElement()); |
| 3760 | textarea.style.display = ""; |
| 3761 | if (textarea.form) { |
| 3762 | off(textarea.form, "submit", save); |
| 3763 | if (typeof textarea.form.submit == "function") |
| 3764 | textarea.form.submit = realSubmit; |
| 3765 | } |
| 3766 | }; |
| 3767 | return cm; |
| 3768 | }; |
| 3769 | |
| 3770 | // STRING STREAM |
| 3771 | |
| 3772 | // Fed to the mode parsers, provides helper functions to make |
| 3773 | // parsers more succinct. |
| 3774 | |
| 3775 | // The character stream used by a mode's parser. |
| 3776 | function StringStream(string, tabSize) { |
| 3777 | this.pos = this.start = 0; |
| 3778 | this.string = string; |
| 3779 | this.tabSize = tabSize || 8; |
| 3780 | this.lastColumnPos = this.lastColumnValue = 0; |
| 3781 | this.lineStart = 0; |
| 3782 | } |
| 3783 | |
| 3784 | StringStream.prototype = { |
| 3785 | eol: function() {return this.pos >= this.string.length;}, |
| 3786 | sol: function() {return this.pos == this.lineStart;}, |
| 3787 | peek: function() {return this.string.charAt(this.pos) || undefined;}, |
| 3788 | next: function() { |
| 3789 | if (this.pos < this.string.length) |
| 3790 | return this.string.charAt(this.pos++); |
| 3791 | }, |
| 3792 | eat: function(match) { |
| 3793 | var ch = this.string.charAt(this.pos); |
| 3794 | if (typeof match == "string") var ok = ch == match; |
| 3795 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); |
| 3796 | if (ok) {++this.pos; return ch;} |
| 3797 | }, |
| 3798 | eatWhile: function(match) { |
| 3799 | var start = this.pos; |
| 3800 | while (this.eat(match)){} |
| 3801 | return this.pos > start; |
| 3802 | }, |
| 3803 | eatSpace: function() { |
| 3804 | var start = this.pos; |
| 3805 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; |
| 3806 | return this.pos > start; |
| 3807 | }, |
| 3808 | skipToEnd: function() {this.pos = this.string.length;}, |
| 3809 | skipTo: function(ch) { |
| 3810 | var found = this.string.indexOf(ch, this.pos); |
| 3811 | if (found > -1) {this.pos = found; return true;} |
| 3812 | }, |
| 3813 | backUp: function(n) {this.pos -= n;}, |
| 3814 | column: function() { |
| 3815 | if (this.lastColumnPos < this.start) { |
| 3816 | this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); |
| 3817 | this.lastColumnPos = this.start; |
| 3818 | } |
| 3819 | return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); |
| 3820 | }, |
| 3821 | indentation: function() { |
| 3822 | return countColumn(this.string, null, this.tabSize) - |
| 3823 | (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); |
| 3824 | }, |
| 3825 | match: function(pattern, consume, caseInsensitive) { |
| 3826 | if (typeof pattern == "string") { |
| 3827 | var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; |
| 3828 | var substr = this.string.substr(this.pos, pattern.length); |
| 3829 | if (cased(substr) == cased(pattern)) { |
| 3830 | if (consume !== false) this.pos += pattern.length; |
| 3831 | return true; |
| 3832 | } |
| 3833 | } else { |
| 3834 | var match = this.string.slice(this.pos).match(pattern); |
| 3835 | if (match && match.index > 0) return null; |
| 3836 | if (match && consume !== false) this.pos += match[0].length; |
| 3837 | return match; |
| 3838 | } |
| 3839 | }, |
| 3840 | current: function(){return this.string.slice(this.start, this.pos);}, |
| 3841 | hideFirstChars: function(n, inner) { |
| 3842 | this.lineStart += n; |
| 3843 | try { return inner(); } |
| 3844 | finally { this.lineStart -= n; } |
| 3845 | } |
| 3846 | }; |
| 3847 | CodeMirror.StringStream = StringStream; |
| 3848 | |
| 3849 | // TEXTMARKERS |
| 3850 | |
| 3851 | function TextMarker(doc, type) { |
| 3852 | this.lines = []; |
| 3853 | this.type = type; |
| 3854 | this.doc = doc; |
| 3855 | } |
| 3856 | CodeMirror.TextMarker = TextMarker; |
| 3857 | eventMixin(TextMarker); |
| 3858 | |
| 3859 | TextMarker.prototype.clear = function() { |
| 3860 | if (this.explicitlyCleared) return; |
| 3861 | var cm = this.doc.cm, withOp = cm && !cm.curOp; |
| 3862 | if (withOp) startOperation(cm); |
| 3863 | if (hasHandler(this, "clear")) { |
| 3864 | var found = this.find(); |
| 3865 | if (found) signalLater(this, "clear", found.from, found.to); |
| 3866 | } |
| 3867 | var min = null, max = null; |
| 3868 | for (var i = 0; i < this.lines.length; ++i) { |
| 3869 | var line = this.lines[i]; |
| 3870 | var span = getMarkedSpanFor(line.markedSpans, this); |
| 3871 | if (span.to != null) max = lineNo(line); |
| 3872 | line.markedSpans = removeMarkedSpan(line.markedSpans, span); |
| 3873 | if (span.from != null) |
| 3874 | min = lineNo(line); |
| 3875 | else if (this.collapsed && !lineIsHidden(this.doc, line) && cm) |
| 3876 | updateLineHeight(line, textHeight(cm.display)); |
| 3877 | } |
| 3878 | if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { |
| 3879 | var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); |
| 3880 | if (len > cm.display.maxLineLength) { |
| 3881 | cm.display.maxLine = visual; |
| 3882 | cm.display.maxLineLength = len; |
| 3883 | cm.display.maxLineChanged = true; |
| 3884 | } |
| 3885 | } |
| 3886 | |
| 3887 | if (min != null && cm) regChange(cm, min, max + 1); |
| 3888 | this.lines.length = 0; |
| 3889 | this.explicitlyCleared = true; |
| 3890 | if (this.atomic && this.doc.cantEdit) { |
| 3891 | this.doc.cantEdit = false; |
| 3892 | if (cm) reCheckSelection(cm); |
| 3893 | } |
| 3894 | if (withOp) endOperation(cm); |
| 3895 | }; |
| 3896 | |
| 3897 | TextMarker.prototype.find = function(bothSides) { |
| 3898 | var from, to; |
| 3899 | for (var i = 0; i < this.lines.length; ++i) { |
| 3900 | var line = this.lines[i]; |
| 3901 | var span = getMarkedSpanFor(line.markedSpans, this); |
| 3902 | if (span.from != null || span.to != null) { |
| 3903 | var found = lineNo(line); |
| 3904 | if (span.from != null) from = Pos(found, span.from); |
| 3905 | if (span.to != null) to = Pos(found, span.to); |
| 3906 | } |
| 3907 | } |
| 3908 | if (this.type == "bookmark" && !bothSides) return from; |
| 3909 | return from && {from: from, to: to}; |
| 3910 | }; |
| 3911 | |
| 3912 | TextMarker.prototype.changed = function() { |
| 3913 | var pos = this.find(), cm = this.doc.cm; |
| 3914 | if (!pos || !cm) return; |
| 3915 | if (this.type != "bookmark") pos = pos.from; |
| 3916 | var line = getLine(this.doc, pos.line); |
| 3917 | clearCachedMeasurement(cm, line); |
| 3918 | if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) { |
| 3919 | for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { |
| 3920 | if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); |
| 3921 | break; |
| 3922 | } |
| 3923 | runInOp(cm, function() { |
| 3924 | cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true; |
| 3925 | }); |
| 3926 | } |
| 3927 | }; |
| 3928 | |
| 3929 | TextMarker.prototype.attachLine = function(line) { |
| 3930 | if (!this.lines.length && this.doc.cm) { |
| 3931 | var op = this.doc.cm.curOp; |
| 3932 | if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) |
| 3933 | (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); |
| 3934 | } |
| 3935 | this.lines.push(line); |
| 3936 | }; |
| 3937 | TextMarker.prototype.detachLine = function(line) { |
| 3938 | this.lines.splice(indexOf(this.lines, line), 1); |
| 3939 | if (!this.lines.length && this.doc.cm) { |
| 3940 | var op = this.doc.cm.curOp; |
| 3941 | (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); |
| 3942 | } |
| 3943 | }; |
| 3944 | |
| 3945 | var nextMarkerId = 0; |
| 3946 | |
| 3947 | function markText(doc, from, to, options, type) { |
| 3948 | if (options && options.shared) return markTextShared(doc, from, to, options, type); |
| 3949 | if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); |
| 3950 | |
| 3951 | var marker = new TextMarker(doc, type); |
| 3952 | if (options) copyObj(options, marker); |
| 3953 | if (posLess(to, from) || posEq(from, to) && marker.clearWhenEmpty !== false) |
| 3954 | return marker; |
| 3955 | if (marker.replacedWith) { |
| 3956 | marker.collapsed = true; |
| 3957 | marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); |
| 3958 | if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; |
| 3959 | } |
| 3960 | if (marker.collapsed) { |
| 3961 | if (conflictingCollapsedRange(doc, from.line, from, to, marker) || |
| 3962 | from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) |
| 3963 | throw new Error("Inserting collapsed marker partially overlapping an existing one"); |
| 3964 | sawCollapsedSpans = true; |
| 3965 | } |
| 3966 | |
| 3967 | if (marker.addToHistory) |
| 3968 | addToHistory(doc, {from: from, to: to, origin: "markText"}, |
| 3969 | {head: doc.sel.head, anchor: doc.sel.anchor}, NaN); |
| 3970 | |
| 3971 | var curLine = from.line, cm = doc.cm, updateMaxLine; |
| 3972 | doc.iter(curLine, to.line + 1, function(line) { |
| 3973 | if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) |
| 3974 | updateMaxLine = true; |
| 3975 | var span = {from: null, to: null, marker: marker}; |
| 3976 | if (curLine == from.line) span.from = from.ch; |
| 3977 | if (curLine == to.line) span.to = to.ch; |
| 3978 | if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0); |
| 3979 | addMarkedSpan(line, span); |
| 3980 | ++curLine; |
| 3981 | }); |
| 3982 | if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { |
| 3983 | if (lineIsHidden(doc, line)) updateLineHeight(line, 0); |
| 3984 | }); |
| 3985 | |
| 3986 | if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); |
| 3987 | |
| 3988 | if (marker.readOnly) { |
| 3989 | sawReadOnlySpans = true; |
| 3990 | if (doc.history.done.length || doc.history.undone.length) |
| 3991 | doc.clearHistory(); |
| 3992 | } |
| 3993 | if (marker.collapsed) { |
| 3994 | marker.id = ++nextMarkerId; |
| 3995 | marker.atomic = true; |
| 3996 | } |
| 3997 | if (cm) { |
| 3998 | if (updateMaxLine) cm.curOp.updateMaxLine = true; |
| 3999 | if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed) |
| 4000 | regChange(cm, from.line, to.line + 1); |
| 4001 | if (marker.atomic) reCheckSelection(cm); |
| 4002 | } |
| 4003 | return marker; |
| 4004 | } |
| 4005 | |
| 4006 | // SHARED TEXTMARKERS |
| 4007 | |
| 4008 | function SharedTextMarker(markers, primary) { |
| 4009 | this.markers = markers; |
| 4010 | this.primary = primary; |
| 4011 | for (var i = 0, me = this; i < markers.length; ++i) { |
| 4012 | markers[i].parent = this; |
| 4013 | on(markers[i], "clear", function(){me.clear();}); |
| 4014 | } |
| 4015 | } |
| 4016 | CodeMirror.SharedTextMarker = SharedTextMarker; |
| 4017 | eventMixin(SharedTextMarker); |
| 4018 | |
| 4019 | SharedTextMarker.prototype.clear = function() { |
| 4020 | if (this.explicitlyCleared) return; |
| 4021 | this.explicitlyCleared = true; |
| 4022 | for (var i = 0; i < this.markers.length; ++i) |
| 4023 | this.markers[i].clear(); |
| 4024 | signalLater(this, "clear"); |
| 4025 | }; |
| 4026 | SharedTextMarker.prototype.find = function() { |
| 4027 | return this.primary.find(); |
| 4028 | }; |
| 4029 | |
| 4030 | function markTextShared(doc, from, to, options, type) { |
| 4031 | options = copyObj(options); |
| 4032 | options.shared = false; |
| 4033 | var markers = [markText(doc, from, to, options, type)], primary = markers[0]; |
| 4034 | var widget = options.replacedWith; |
| 4035 | linkedDocs(doc, function(doc) { |
| 4036 | if (widget) options.replacedWith = widget.cloneNode(true); |
| 4037 | markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); |
| 4038 | for (var i = 0; i < doc.linked.length; ++i) |
| 4039 | if (doc.linked[i].isParent) return; |
| 4040 | primary = lst(markers); |
| 4041 | }); |
| 4042 | return new SharedTextMarker(markers, primary); |
| 4043 | } |
| 4044 | |
| 4045 | // TEXTMARKER SPANS |
| 4046 | |
| 4047 | function getMarkedSpanFor(spans, marker) { |
| 4048 | if (spans) for (var i = 0; i < spans.length; ++i) { |
| 4049 | var span = spans[i]; |
| 4050 | if (span.marker == marker) return span; |
| 4051 | } |
| 4052 | } |
| 4053 | function removeMarkedSpan(spans, span) { |
| 4054 | for (var r, i = 0; i < spans.length; ++i) |
| 4055 | if (spans[i] != span) (r || (r = [])).push(spans[i]); |
| 4056 | return r; |
| 4057 | } |
| 4058 | function addMarkedSpan(line, span) { |
| 4059 | line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; |
| 4060 | span.marker.attachLine(line); |
| 4061 | } |
| 4062 | |
| 4063 | function markedSpansBefore(old, startCh, isInsert) { |
| 4064 | if (old) for (var i = 0, nw; i < old.length; ++i) { |
| 4065 | var span = old[i], marker = span.marker; |
| 4066 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); |
| 4067 | if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { |
| 4068 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); |
| 4069 | (nw || (nw = [])).push({from: span.from, |
| 4070 | to: endsAfter ? null : span.to, |
| 4071 | marker: marker}); |
| 4072 | } |
| 4073 | } |
| 4074 | return nw; |
| 4075 | } |
| 4076 | |
| 4077 | function markedSpansAfter(old, endCh, isInsert) { |
| 4078 | if (old) for (var i = 0, nw; i < old.length; ++i) { |
| 4079 | var span = old[i], marker = span.marker; |
| 4080 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); |
| 4081 | if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { |
| 4082 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); |
| 4083 | (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, |
| 4084 | to: span.to == null ? null : span.to - endCh, |
| 4085 | marker: marker}); |
| 4086 | } |
| 4087 | } |
| 4088 | return nw; |
| 4089 | } |
| 4090 | |
| 4091 | function stretchSpansOverChange(doc, change) { |
| 4092 | var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; |
| 4093 | var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; |
| 4094 | if (!oldFirst && !oldLast) return null; |
| 4095 | |
| 4096 | var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to); |
| 4097 | // Get the spans that 'stick out' on both sides |
| 4098 | var first = markedSpansBefore(oldFirst, startCh, isInsert); |
| 4099 | var last = markedSpansAfter(oldLast, endCh, isInsert); |
| 4100 | |
| 4101 | // Next, merge those two ends |
| 4102 | var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); |
| 4103 | if (first) { |
| 4104 | // Fix up .to properties of first |
| 4105 | for (var i = 0; i < first.length; ++i) { |
| 4106 | var span = first[i]; |
| 4107 | if (span.to == null) { |
| 4108 | var found = getMarkedSpanFor(last, span.marker); |
| 4109 | if (!found) span.to = startCh; |
| 4110 | else if (sameLine) span.to = found.to == null ? null : found.to + offset; |
| 4111 | } |
| 4112 | } |
| 4113 | } |
| 4114 | if (last) { |
| 4115 | // Fix up .from in last (or move them into first in case of sameLine) |
| 4116 | for (var i = 0; i < last.length; ++i) { |
| 4117 | var span = last[i]; |
| 4118 | if (span.to != null) span.to += offset; |
| 4119 | if (span.from == null) { |
| 4120 | var found = getMarkedSpanFor(first, span.marker); |
| 4121 | if (!found) { |
| 4122 | span.from = offset; |
| 4123 | if (sameLine) (first || (first = [])).push(span); |
| 4124 | } |
| 4125 | } else { |
| 4126 | span.from += offset; |
| 4127 | if (sameLine) (first || (first = [])).push(span); |
| 4128 | } |
| 4129 | } |
| 4130 | } |
| 4131 | // Make sure we didn't create any zero-length spans |
| 4132 | if (first) first = clearEmptySpans(first); |
| 4133 | if (last && last != first) last = clearEmptySpans(last); |
| 4134 | |
| 4135 | var newMarkers = [first]; |
| 4136 | if (!sameLine) { |
| 4137 | // Fill gap with whole-line-spans |
| 4138 | var gap = change.text.length - 2, gapMarkers; |
| 4139 | if (gap > 0 && first) |
| 4140 | for (var i = 0; i < first.length; ++i) |
| 4141 | if (first[i].to == null) |
| 4142 | (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); |
| 4143 | for (var i = 0; i < gap; ++i) |
| 4144 | newMarkers.push(gapMarkers); |
| 4145 | newMarkers.push(last); |
| 4146 | } |
| 4147 | return newMarkers; |
| 4148 | } |
| 4149 | |
| 4150 | function clearEmptySpans(spans) { |
| 4151 | for (var i = 0; i < spans.length; ++i) { |
| 4152 | var span = spans[i]; |
| 4153 | if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) |
| 4154 | spans.splice(i--, 1); |
| 4155 | } |
| 4156 | if (!spans.length) return null; |
| 4157 | return spans; |
| 4158 | } |
| 4159 | |
| 4160 | function mergeOldSpans(doc, change) { |
| 4161 | var old = getOldSpans(doc, change); |
| 4162 | var stretched = stretchSpansOverChange(doc, change); |
| 4163 | if (!old) return stretched; |
| 4164 | if (!stretched) return old; |
| 4165 | |
| 4166 | for (var i = 0; i < old.length; ++i) { |
| 4167 | var oldCur = old[i], stretchCur = stretched[i]; |
| 4168 | if (oldCur && stretchCur) { |
| 4169 | spans: for (var j = 0; j < stretchCur.length; ++j) { |
| 4170 | var span = stretchCur[j]; |
| 4171 | for (var k = 0; k < oldCur.length; ++k) |
| 4172 | if (oldCur[k].marker == span.marker) continue spans; |
| 4173 | oldCur.push(span); |
| 4174 | } |
| 4175 | } else if (stretchCur) { |
| 4176 | old[i] = stretchCur; |
| 4177 | } |
| 4178 | } |
| 4179 | return old; |
| 4180 | } |
| 4181 | |
| 4182 | function removeReadOnlyRanges(doc, from, to) { |
| 4183 | var markers = null; |
| 4184 | doc.iter(from.line, to.line + 1, function(line) { |
| 4185 | if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { |
| 4186 | var mark = line.markedSpans[i].marker; |
| 4187 | if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) |
| 4188 | (markers || (markers = [])).push(mark); |
| 4189 | } |
| 4190 | }); |
| 4191 | if (!markers) return null; |
| 4192 | var parts = [{from: from, to: to}]; |
| 4193 | for (var i = 0; i < markers.length; ++i) { |
| 4194 | var mk = markers[i], m = mk.find(); |
| 4195 | for (var j = 0; j < parts.length; ++j) { |
| 4196 | var p = parts[j]; |
| 4197 | if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue; |
| 4198 | var newParts = [j, 1]; |
| 4199 | if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) |
| 4200 | newParts.push({from: p.from, to: m.from}); |
| 4201 | if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) |
| 4202 | newParts.push({from: m.to, to: p.to}); |
| 4203 | parts.splice.apply(parts, newParts); |
| 4204 | j += newParts.length - 1; |
| 4205 | } |
| 4206 | } |
| 4207 | return parts; |
| 4208 | } |
| 4209 | |
| 4210 | function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; } |
| 4211 | function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; } |
| 4212 | |
| 4213 | function compareCollapsedMarkers(a, b) { |
| 4214 | var lenDiff = a.lines.length - b.lines.length; |
| 4215 | if (lenDiff != 0) return lenDiff; |
| 4216 | var aPos = a.find(), bPos = b.find(); |
| 4217 | var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); |
| 4218 | if (fromCmp) return -fromCmp; |
| 4219 | var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); |
| 4220 | if (toCmp) return toCmp; |
| 4221 | return b.id - a.id; |
| 4222 | } |
| 4223 | |
| 4224 | function collapsedSpanAtSide(line, start) { |
| 4225 | var sps = sawCollapsedSpans && line.markedSpans, found; |
| 4226 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
| 4227 | sp = sps[i]; |
| 4228 | if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && |
| 4229 | (!found || compareCollapsedMarkers(found, sp.marker) < 0)) |
| 4230 | found = sp.marker; |
| 4231 | } |
| 4232 | return found; |
| 4233 | } |
| 4234 | function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); } |
| 4235 | function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); } |
| 4236 | |
| 4237 | function conflictingCollapsedRange(doc, lineNo, from, to, marker) { |
| 4238 | var line = getLine(doc, lineNo); |
| 4239 | var sps = sawCollapsedSpans && line.markedSpans; |
| 4240 | if (sps) for (var i = 0; i < sps.length; ++i) { |
| 4241 | var sp = sps[i]; |
| 4242 | if (!sp.marker.collapsed) continue; |
| 4243 | var found = sp.marker.find(true); |
| 4244 | var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); |
| 4245 | var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); |
| 4246 | if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue; |
| 4247 | if (fromCmp <= 0 && (cmp(found.to, from) || extraRight(sp.marker) - extraLeft(marker)) > 0 || |
| 4248 | fromCmp >= 0 && (cmp(found.from, to) || extraLeft(sp.marker) - extraRight(marker)) < 0) |
| 4249 | return true; |
| 4250 | } |
| 4251 | } |
| 4252 | |
| 4253 | function visualLine(doc, line) { |
| 4254 | var merged; |
| 4255 | while (merged = collapsedSpanAtStart(line)) |
| 4256 | line = getLine(doc, merged.find().from.line); |
| 4257 | return line; |
| 4258 | } |
| 4259 | |
| 4260 | function lineIsHidden(doc, line) { |
| 4261 | var sps = sawCollapsedSpans && line.markedSpans; |
| 4262 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
| 4263 | sp = sps[i]; |
| 4264 | if (!sp.marker.collapsed) continue; |
| 4265 | if (sp.from == null) return true; |
| 4266 | if (sp.marker.replacedWith) continue; |
| 4267 | if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) |
| 4268 | return true; |
| 4269 | } |
| 4270 | } |
| 4271 | function lineIsHiddenInner(doc, line, span) { |
| 4272 | if (span.to == null) { |
| 4273 | var end = span.marker.find().to, endLine = getLine(doc, end.line); |
| 4274 | return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker)); |
| 4275 | } |
| 4276 | if (span.marker.inclusiveRight && span.to == line.text.length) |
| 4277 | return true; |
| 4278 | for (var sp, i = 0; i < line.markedSpans.length; ++i) { |
| 4279 | sp = line.markedSpans[i]; |
| 4280 | if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to && |
| 4281 | (sp.to == null || sp.to != span.from) && |
| 4282 | (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && |
| 4283 | lineIsHiddenInner(doc, line, sp)) return true; |
| 4284 | } |
| 4285 | } |
| 4286 | |
| 4287 | function detachMarkedSpans(line) { |
| 4288 | var spans = line.markedSpans; |
| 4289 | if (!spans) return; |
| 4290 | for (var i = 0; i < spans.length; ++i) |
| 4291 | spans[i].marker.detachLine(line); |
| 4292 | line.markedSpans = null; |
| 4293 | } |
| 4294 | |
| 4295 | function attachMarkedSpans(line, spans) { |
| 4296 | if (!spans) return; |
| 4297 | for (var i = 0; i < spans.length; ++i) |
| 4298 | spans[i].marker.attachLine(line); |
| 4299 | line.markedSpans = spans; |
| 4300 | } |
| 4301 | |
| 4302 | // LINE WIDGETS |
| 4303 | |
| 4304 | var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { |
| 4305 | if (options) for (var opt in options) if (options.hasOwnProperty(opt)) |
| 4306 | this[opt] = options[opt]; |
| 4307 | this.cm = cm; |
| 4308 | this.node = node; |
| 4309 | }; |
| 4310 | eventMixin(LineWidget); |
| 4311 | function widgetOperation(f) { |
| 4312 | return function() { |
| 4313 | var withOp = !this.cm.curOp; |
| 4314 | if (withOp) startOperation(this.cm); |
| 4315 | try {var result = f.apply(this, arguments);} |
| 4316 | finally {if (withOp) endOperation(this.cm);} |
| 4317 | return result; |
| 4318 | }; |
| 4319 | } |
| 4320 | LineWidget.prototype.clear = widgetOperation(function() { |
| 4321 | var ws = this.line.widgets, no = lineNo(this.line); |
| 4322 | if (no == null || !ws) return; |
| 4323 | for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); |
| 4324 | if (!ws.length) this.line.widgets = null; |
| 4325 | var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop; |
| 4326 | updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); |
| 4327 | if (aboveVisible) addToScrollPos(this.cm, 0, -this.height); |
| 4328 | regChange(this.cm, no, no + 1); |
| 4329 | }); |
| 4330 | LineWidget.prototype.changed = widgetOperation(function() { |
| 4331 | var oldH = this.height; |
| 4332 | this.height = null; |
| 4333 | var diff = widgetHeight(this) - oldH; |
| 4334 | if (!diff) return; |
| 4335 | updateLineHeight(this.line, this.line.height + diff); |
| 4336 | var no = lineNo(this.line); |
| 4337 | regChange(this.cm, no, no + 1); |
| 4338 | }); |
| 4339 | |
| 4340 | function widgetHeight(widget) { |
| 4341 | if (widget.height != null) return widget.height; |
| 4342 | if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) |
| 4343 | removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); |
| 4344 | return widget.height = widget.node.offsetHeight; |
| 4345 | } |
| 4346 | |
| 4347 | function addLineWidget(cm, handle, node, options) { |
| 4348 | var widget = new LineWidget(cm, node, options); |
| 4349 | if (widget.noHScroll) cm.display.alignWidgets = true; |
| 4350 | changeLine(cm, handle, function(line) { |
| 4351 | var widgets = line.widgets || (line.widgets = []); |
| 4352 | if (widget.insertAt == null) widgets.push(widget); |
| 4353 | else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); |
| 4354 | widget.line = line; |
| 4355 | if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { |
| 4356 | var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop; |
| 4357 | updateLineHeight(line, line.height + widgetHeight(widget)); |
| 4358 | if (aboveVisible) addToScrollPos(cm, 0, widget.height); |
| 4359 | } |
| 4360 | return true; |
| 4361 | }); |
| 4362 | return widget; |
| 4363 | } |
| 4364 | |
| 4365 | // LINE DATA STRUCTURE |
| 4366 | |
| 4367 | // Line objects. These hold state related to a line, including |
| 4368 | // highlighting info (the styles array). |
| 4369 | var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { |
| 4370 | this.text = text; |
| 4371 | attachMarkedSpans(this, markedSpans); |
| 4372 | this.height = estimateHeight ? estimateHeight(this) : 1; |
| 4373 | }; |
| 4374 | eventMixin(Line); |
| 4375 | Line.prototype.lineNo = function() { return lineNo(this); }; |
| 4376 | |
| 4377 | function updateLine(line, text, markedSpans, estimateHeight) { |
| 4378 | line.text = text; |
| 4379 | if (line.stateAfter) line.stateAfter = null; |
| 4380 | if (line.styles) line.styles = null; |
| 4381 | if (line.order != null) line.order = null; |
| 4382 | detachMarkedSpans(line); |
| 4383 | attachMarkedSpans(line, markedSpans); |
| 4384 | var estHeight = estimateHeight ? estimateHeight(line) : 1; |
| 4385 | if (estHeight != line.height) updateLineHeight(line, estHeight); |
| 4386 | } |
| 4387 | |
| 4388 | function cleanUpLine(line) { |
| 4389 | line.parent = null; |
| 4390 | detachMarkedSpans(line); |
| 4391 | } |
| 4392 | |
| 4393 | // Run the given mode's parser over a line, update the styles |
| 4394 | // array, which contains alternating fragments of text and CSS |
| 4395 | // classes. |
| 4396 | function runMode(cm, text, mode, state, f, forceToEnd) { |
| 4397 | var flattenSpans = mode.flattenSpans; |
| 4398 | if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; |
| 4399 | var curStart = 0, curStyle = null; |
| 4400 | var stream = new StringStream(text, cm.options.tabSize), style; |
| 4401 | if (text == "" && mode.blankLine) mode.blankLine(state); |
| 4402 | while (!stream.eol()) { |
| 4403 | if (stream.pos > cm.options.maxHighlightLength) { |
| 4404 | flattenSpans = false; |
| 4405 | if (forceToEnd) processLine(cm, text, state, stream.pos); |
| 4406 | stream.pos = text.length; |
| 4407 | style = null; |
| 4408 | } else { |
| 4409 | style = mode.token(stream, state); |
| 4410 | } |
| 4411 | if (cm.options.addModeClass) { |
| 4412 | var mName = CodeMirror.innerMode(mode, state).mode.name; |
| 4413 | if (mName) style = "m-" + (style ? mName + " " + style : mName); |
| 4414 | } |
| 4415 | if (!flattenSpans || curStyle != style) { |
| 4416 | if (curStart < stream.start) f(stream.start, curStyle); |
| 4417 | curStart = stream.start; curStyle = style; |
| 4418 | } |
| 4419 | stream.start = stream.pos; |
| 4420 | } |
| 4421 | while (curStart < stream.pos) { |
| 4422 | // Webkit seems to refuse to render text nodes longer than 57444 characters |
| 4423 | var pos = Math.min(stream.pos, curStart + 50000); |
| 4424 | f(pos, curStyle); |
| 4425 | curStart = pos; |
| 4426 | } |
| 4427 | } |
| 4428 | |
| 4429 | function highlightLine(cm, line, state, forceToEnd) { |
| 4430 | // A styles array always starts with a number identifying the |
| 4431 | // mode/overlays that it is based on (for easy invalidation). |
| 4432 | var st = [cm.state.modeGen]; |
| 4433 | // Compute the base array of styles |
| 4434 | runMode(cm, line.text, cm.doc.mode, state, function(end, style) { |
| 4435 | st.push(end, style); |
| 4436 | }, forceToEnd); |
| 4437 | |
| 4438 | // Run overlays, adjust style array. |
| 4439 | for (var o = 0; o < cm.state.overlays.length; ++o) { |
| 4440 | var overlay = cm.state.overlays[o], i = 1, at = 0; |
| 4441 | runMode(cm, line.text, overlay.mode, true, function(end, style) { |
| 4442 | var start = i; |
| 4443 | // Ensure there's a token end at the current position, and that i points at it |
| 4444 | while (at < end) { |
| 4445 | var i_end = st[i]; |
| 4446 | if (i_end > end) |
| 4447 | st.splice(i, 1, end, st[i+1], i_end); |
| 4448 | i += 2; |
| 4449 | at = Math.min(end, i_end); |
| 4450 | } |
| 4451 | if (!style) return; |
| 4452 | if (overlay.opaque) { |
| 4453 | st.splice(start, i - start, end, style); |
| 4454 | i = start + 2; |
| 4455 | } else { |
| 4456 | for (; start < i; start += 2) { |
| 4457 | var cur = st[start+1]; |
| 4458 | st[start+1] = cur ? cur + " " + style : style; |
| 4459 | } |
| 4460 | } |
| 4461 | }); |
| 4462 | } |
| 4463 | |
| 4464 | return st; |
| 4465 | } |
| 4466 | |
| 4467 | function getLineStyles(cm, line) { |
| 4468 | if (!line.styles || line.styles[0] != cm.state.modeGen) |
| 4469 | line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); |
| 4470 | return line.styles; |
| 4471 | } |
| 4472 | |
| 4473 | // Lightweight form of highlight -- proceed over this line and |
| 4474 | // update state, but don't save a style array. |
| 4475 | function processLine(cm, text, state, startAt) { |
| 4476 | var mode = cm.doc.mode; |
| 4477 | var stream = new StringStream(text, cm.options.tabSize); |
| 4478 | stream.start = stream.pos = startAt || 0; |
| 4479 | if (text == "" && mode.blankLine) mode.blankLine(state); |
| 4480 | while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { |
| 4481 | mode.token(stream, state); |
| 4482 | stream.start = stream.pos; |
| 4483 | } |
| 4484 | } |
| 4485 | |
| 4486 | var styleToClassCache = {}, styleToClassCacheWithMode = {}; |
| 4487 | function interpretTokenStyle(style, builder) { |
| 4488 | if (!style) return null; |
| 4489 | for (;;) { |
| 4490 | var lineClass = style.match(/(?:^|\s+)line-(background-)?(\S+)/); |
| 4491 | if (!lineClass) break; |
| 4492 | style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length); |
| 4493 | var prop = lineClass[1] ? "bgClass" : "textClass"; |
| 4494 | if (builder[prop] == null) |
| 4495 | builder[prop] = lineClass[2]; |
| 4496 | else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop])) |
| 4497 | builder[prop] += " " + lineClass[2]; |
| 4498 | } |
| 4499 | if (/^\s*$/.test(style)) return null; |
| 4500 | var cache = builder.cm.options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; |
| 4501 | return cache[style] || |
| 4502 | (cache[style] = style.replace(/\S+/g, "cm-$&")); |
| 4503 | } |
| 4504 | |
| 4505 | function buildLineContent(cm, realLine, measure, copyWidgets) { |
| 4506 | var merged, line = realLine, empty = true; |
| 4507 | while (merged = collapsedSpanAtStart(line)) |
| 4508 | line = getLine(cm.doc, merged.find().from.line); |
| 4509 | |
| 4510 | var builder = {pre: elt("pre"), col: 0, pos: 0, |
| 4511 | measure: null, measuredSomething: false, cm: cm, |
| 4512 | copyWidgets: copyWidgets}; |
| 4513 | |
| 4514 | do { |
| 4515 | if (line.text) empty = false; |
| 4516 | builder.measure = line == realLine && measure; |
| 4517 | builder.pos = 0; |
| 4518 | builder.addToken = builder.measure ? buildTokenMeasure : buildToken; |
| 4519 | if ((ie || webkit) && cm.getOption("lineWrapping")) |
| 4520 | builder.addToken = buildTokenSplitSpaces(builder.addToken); |
| 4521 | var next = insertLineContent(line, builder, getLineStyles(cm, line)); |
| 4522 | if (measure && line == realLine && !builder.measuredSomething) { |
| 4523 | measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); |
| 4524 | builder.measuredSomething = true; |
| 4525 | } |
| 4526 | if (next) line = getLine(cm.doc, next.to.line); |
| 4527 | } while (next); |
| 4528 | |
| 4529 | if (measure && !builder.measuredSomething && !measure[0]) |
| 4530 | measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); |
| 4531 | if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) |
| 4532 | builder.pre.appendChild(document.createTextNode("\u00a0")); |
| 4533 | |
| 4534 | var order; |
| 4535 | // Work around problem with the reported dimensions of single-char |
| 4536 | // direction spans on IE (issue #1129). See also the comment in |
| 4537 | // cursorCoords. |
| 4538 | if (measure && ie && (order = getOrder(line))) { |
| 4539 | var l = order.length - 1; |
| 4540 | if (order[l].from == order[l].to) --l; |
| 4541 | var last = order[l], prev = order[l - 1]; |
| 4542 | if (last.from + 1 == last.to && prev && last.level < prev.level) { |
| 4543 | var span = measure[builder.pos - 1]; |
| 4544 | if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), |
| 4545 | span.nextSibling); |
| 4546 | } |
| 4547 | } |
| 4548 | |
| 4549 | var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass; |
| 4550 | if (textClass) builder.pre.className = textClass; |
| 4551 | |
| 4552 | signal(cm, "renderLine", cm, realLine, builder.pre); |
| 4553 | return builder; |
| 4554 | } |
| 4555 | |
| 4556 | function defaultSpecialCharPlaceholder(ch) { |
| 4557 | var token = elt("span", "\u2022", "cm-invalidchar"); |
| 4558 | token.title = "\\u" + ch.charCodeAt(0).toString(16); |
| 4559 | return token; |
| 4560 | } |
| 4561 | |
| 4562 | function buildToken(builder, text, style, startStyle, endStyle, title) { |
| 4563 | if (!text) return; |
| 4564 | var special = builder.cm.options.specialChars; |
| 4565 | if (!special.test(text)) { |
| 4566 | builder.col += text.length; |
| 4567 | var content = document.createTextNode(text); |
| 4568 | } else { |
| 4569 | var content = document.createDocumentFragment(), pos = 0; |
| 4570 | while (true) { |
| 4571 | special.lastIndex = pos; |
| 4572 | var m = special.exec(text); |
| 4573 | var skipped = m ? m.index - pos : text.length - pos; |
| 4574 | if (skipped) { |
| 4575 | content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); |
| 4576 | builder.col += skipped; |
| 4577 | } |
| 4578 | if (!m) break; |
| 4579 | pos += skipped + 1; |
| 4580 | if (m[0] == "\t") { |
| 4581 | var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; |
| 4582 | content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); |
| 4583 | builder.col += tabWidth; |
| 4584 | } else { |
| 4585 | var token = builder.cm.options.specialCharPlaceholder(m[0]); |
| 4586 | content.appendChild(token); |
| 4587 | builder.col += 1; |
| 4588 | } |
| 4589 | } |
| 4590 | } |
| 4591 | if (style || startStyle || endStyle || builder.measure) { |
| 4592 | var fullStyle = style || ""; |
| 4593 | if (startStyle) fullStyle += startStyle; |
| 4594 | if (endStyle) fullStyle += endStyle; |
| 4595 | var token = elt("span", [content], fullStyle); |
| 4596 | if (title) token.title = title; |
| 4597 | return builder.pre.appendChild(token); |
| 4598 | } |
| 4599 | builder.pre.appendChild(content); |
| 4600 | } |
| 4601 | |
| 4602 | function buildTokenMeasure(builder, text, style, startStyle, endStyle) { |
| 4603 | var wrapping = builder.cm.options.lineWrapping; |
| 4604 | for (var i = 0; i < text.length; ++i) { |
| 4605 | var start = i == 0, to = i + 1; |
| 4606 | while (to < text.length && isExtendingChar(text.charAt(to))) ++to; |
| 4607 | var ch = text.slice(i, to); |
| 4608 | i = to - 1; |
| 4609 | if (i && wrapping && spanAffectsWrapping(text, i)) |
| 4610 | builder.pre.appendChild(elt("wbr")); |
| 4611 | var old = builder.measure[builder.pos]; |
| 4612 | var span = builder.measure[builder.pos] = |
| 4613 | buildToken(builder, ch, style, |
| 4614 | start && startStyle, i == text.length - 1 && endStyle); |
| 4615 | if (old) span.leftSide = old.leftSide || old; |
| 4616 | // In IE single-space nodes wrap differently than spaces |
| 4617 | // embedded in larger text nodes, except when set to |
| 4618 | // white-space: normal (issue #1268). |
| 4619 | if (old_ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && |
| 4620 | i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) |
| 4621 | span.style.whiteSpace = "normal"; |
| 4622 | builder.pos += ch.length; |
| 4623 | } |
| 4624 | if (text.length) builder.measuredSomething = true; |
| 4625 | } |
| 4626 | |
| 4627 | function buildTokenSplitSpaces(inner) { |
| 4628 | function split(old) { |
| 4629 | var out = " "; |
| 4630 | for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; |
| 4631 | out += " "; |
| 4632 | return out; |
| 4633 | } |
| 4634 | return function(builder, text, style, startStyle, endStyle, title) { |
| 4635 | return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title); |
| 4636 | }; |
| 4637 | } |
| 4638 | |
| 4639 | function buildCollapsedSpan(builder, size, marker, ignoreWidget) { |
| 4640 | var widget = !ignoreWidget && marker.replacedWith; |
| 4641 | if (widget) { |
| 4642 | if (builder.copyWidgets) widget = widget.cloneNode(true); |
| 4643 | builder.pre.appendChild(widget); |
| 4644 | if (builder.measure) { |
| 4645 | if (size) { |
| 4646 | builder.measure[builder.pos] = widget; |
| 4647 | } else { |
| 4648 | var elt = zeroWidthElement(builder.cm.display.measure); |
| 4649 | if (marker.type == "bookmark" && !marker.insertLeft) |
| 4650 | builder.measure[builder.pos] = builder.pre.appendChild(elt); |
| 4651 | else if (builder.measure[builder.pos]) |
| 4652 | return; |
| 4653 | else |
| 4654 | builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget); |
| 4655 | } |
| 4656 | builder.measuredSomething = true; |
| 4657 | } |
| 4658 | } |
| 4659 | builder.pos += size; |
| 4660 | } |
| 4661 | |
| 4662 | // Outputs a number of spans to make up a line, taking highlighting |
| 4663 | // and marked text into account. |
| 4664 | function insertLineContent(line, builder, styles) { |
| 4665 | var spans = line.markedSpans, allText = line.text, at = 0; |
| 4666 | if (!spans) { |
| 4667 | for (var i = 1; i < styles.length; i+=2) |
| 4668 | builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder)); |
| 4669 | return; |
| 4670 | } |
| 4671 | |
| 4672 | var len = allText.length, pos = 0, i = 1, text = "", style; |
| 4673 | var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; |
| 4674 | for (;;) { |
| 4675 | if (nextChange == pos) { // Update current marker set |
| 4676 | spanStyle = spanEndStyle = spanStartStyle = title = ""; |
| 4677 | collapsed = null; nextChange = Infinity; |
| 4678 | var foundBookmarks = []; |
| 4679 | for (var j = 0; j < spans.length; ++j) { |
| 4680 | var sp = spans[j], m = sp.marker; |
| 4681 | if (sp.from <= pos && (sp.to == null || sp.to > pos)) { |
| 4682 | if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } |
| 4683 | if (m.className) spanStyle += " " + m.className; |
| 4684 | if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; |
| 4685 | if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; |
| 4686 | if (m.title && !title) title = m.title; |
| 4687 | if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) |
| 4688 | collapsed = sp; |
| 4689 | } else if (sp.from > pos && nextChange > sp.from) { |
| 4690 | nextChange = sp.from; |
| 4691 | } |
| 4692 | if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m); |
| 4693 | } |
| 4694 | if (collapsed && (collapsed.from || 0) == pos) { |
| 4695 | buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, |
| 4696 | collapsed.marker, collapsed.from == null); |
| 4697 | if (collapsed.to == null) return collapsed.marker.find(); |
| 4698 | } |
| 4699 | if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) |
| 4700 | buildCollapsedSpan(builder, 0, foundBookmarks[j]); |
| 4701 | } |
| 4702 | if (pos >= len) break; |
| 4703 | |
| 4704 | var upto = Math.min(len, nextChange); |
| 4705 | while (true) { |
| 4706 | if (text) { |
| 4707 | var end = pos + text.length; |
| 4708 | if (!collapsed) { |
| 4709 | var tokenText = end > upto ? text.slice(0, upto - pos) : text; |
| 4710 | builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, |
| 4711 | spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); |
| 4712 | } |
| 4713 | if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} |
| 4714 | pos = end; |
| 4715 | spanStartStyle = ""; |
| 4716 | } |
| 4717 | text = allText.slice(at, at = styles[i++]); |
| 4718 | style = interpretTokenStyle(styles[i++], builder); |
| 4719 | } |
| 4720 | } |
| 4721 | } |
| 4722 | |
| 4723 | // DOCUMENT DATA STRUCTURE |
| 4724 | |
| 4725 | function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { |
| 4726 | function spansFor(n) {return markedSpans ? markedSpans[n] : null;} |
| 4727 | function update(line, text, spans) { |
| 4728 | updateLine(line, text, spans, estimateHeight); |
| 4729 | signalLater(line, "change", line, change); |
| 4730 | } |
| 4731 | |
| 4732 | var from = change.from, to = change.to, text = change.text; |
| 4733 | var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); |
| 4734 | var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; |
| 4735 | |
| 4736 | // First adjust the line structure |
| 4737 | if (from.ch == 0 && to.ch == 0 && lastText == "" && |
| 4738 | (!doc.cm || doc.cm.options.wholeLineUpdateBefore)) { |
| 4739 | // This is a whole-line replace. Treated specially to make |
| 4740 | // sure line objects move the way they are supposed to. |
| 4741 | for (var i = 0, e = text.length - 1, added = []; i < e; ++i) |
| 4742 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 4743 | update(lastLine, lastLine.text, lastSpans); |
| 4744 | if (nlines) doc.remove(from.line, nlines); |
| 4745 | if (added.length) doc.insert(from.line, added); |
| 4746 | } else if (firstLine == lastLine) { |
| 4747 | if (text.length == 1) { |
| 4748 | update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); |
| 4749 | } else { |
| 4750 | for (var added = [], i = 1, e = text.length - 1; i < e; ++i) |
| 4751 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 4752 | added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); |
| 4753 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
| 4754 | doc.insert(from.line + 1, added); |
| 4755 | } |
| 4756 | } else if (text.length == 1) { |
| 4757 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); |
| 4758 | doc.remove(from.line + 1, nlines); |
| 4759 | } else { |
| 4760 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
| 4761 | update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); |
| 4762 | for (var i = 1, e = text.length - 1, added = []; i < e; ++i) |
| 4763 | added.push(new Line(text[i], spansFor(i), estimateHeight)); |
| 4764 | if (nlines > 1) doc.remove(from.line + 1, nlines - 1); |
| 4765 | doc.insert(from.line + 1, added); |
| 4766 | } |
| 4767 | |
| 4768 | signalLater(doc, "change", doc, change); |
| 4769 | setSelection(doc, selAfter.anchor, selAfter.head, null, true); |
| 4770 | } |
| 4771 | |
| 4772 | function LeafChunk(lines) { |
| 4773 | this.lines = lines; |
| 4774 | this.parent = null; |
| 4775 | for (var i = 0, e = lines.length, height = 0; i < e; ++i) { |
| 4776 | lines[i].parent = this; |
| 4777 | height += lines[i].height; |
| 4778 | } |
| 4779 | this.height = height; |
| 4780 | } |
| 4781 | |
| 4782 | LeafChunk.prototype = { |
| 4783 | chunkSize: function() { return this.lines.length; }, |
| 4784 | removeInner: function(at, n) { |
| 4785 | for (var i = at, e = at + n; i < e; ++i) { |
| 4786 | var line = this.lines[i]; |
| 4787 | this.height -= line.height; |
| 4788 | cleanUpLine(line); |
| 4789 | signalLater(line, "delete"); |
| 4790 | } |
| 4791 | this.lines.splice(at, n); |
| 4792 | }, |
| 4793 | collapse: function(lines) { |
| 4794 | lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); |
| 4795 | }, |
| 4796 | insertInner: function(at, lines, height) { |
| 4797 | this.height += height; |
| 4798 | this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); |
| 4799 | for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; |
| 4800 | }, |
| 4801 | iterN: function(at, n, op) { |
| 4802 | for (var e = at + n; at < e; ++at) |
| 4803 | if (op(this.lines[at])) return true; |
| 4804 | } |
| 4805 | }; |
| 4806 | |
| 4807 | function BranchChunk(children) { |
| 4808 | this.children = children; |
| 4809 | var size = 0, height = 0; |
| 4810 | for (var i = 0, e = children.length; i < e; ++i) { |
| 4811 | var ch = children[i]; |
| 4812 | size += ch.chunkSize(); height += ch.height; |
| 4813 | ch.parent = this; |
| 4814 | } |
| 4815 | this.size = size; |
| 4816 | this.height = height; |
| 4817 | this.parent = null; |
| 4818 | } |
| 4819 | |
| 4820 | BranchChunk.prototype = { |
| 4821 | chunkSize: function() { return this.size; }, |
| 4822 | removeInner: function(at, n) { |
| 4823 | this.size -= n; |
| 4824 | for (var i = 0; i < this.children.length; ++i) { |
| 4825 | var child = this.children[i], sz = child.chunkSize(); |
| 4826 | if (at < sz) { |
| 4827 | var rm = Math.min(n, sz - at), oldHeight = child.height; |
| 4828 | child.removeInner(at, rm); |
| 4829 | this.height -= oldHeight - child.height; |
| 4830 | if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } |
| 4831 | if ((n -= rm) == 0) break; |
| 4832 | at = 0; |
| 4833 | } else at -= sz; |
| 4834 | } |
| 4835 | if (this.size - n < 25) { |
| 4836 | var lines = []; |
| 4837 | this.collapse(lines); |
| 4838 | this.children = [new LeafChunk(lines)]; |
| 4839 | this.children[0].parent = this; |
| 4840 | } |
| 4841 | }, |
| 4842 | collapse: function(lines) { |
| 4843 | for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); |
| 4844 | }, |
| 4845 | insertInner: function(at, lines, height) { |
| 4846 | this.size += lines.length; |
| 4847 | this.height += height; |
| 4848 | for (var i = 0, e = this.children.length; i < e; ++i) { |
| 4849 | var child = this.children[i], sz = child.chunkSize(); |
| 4850 | if (at <= sz) { |
| 4851 | child.insertInner(at, lines, height); |
| 4852 | if (child.lines && child.lines.length > 50) { |
| 4853 | while (child.lines.length > 50) { |
| 4854 | var spilled = child.lines.splice(child.lines.length - 25, 25); |
| 4855 | var newleaf = new LeafChunk(spilled); |
| 4856 | child.height -= newleaf.height; |
| 4857 | this.children.splice(i + 1, 0, newleaf); |
| 4858 | newleaf.parent = this; |
| 4859 | } |
| 4860 | this.maybeSpill(); |
| 4861 | } |
| 4862 | break; |
| 4863 | } |
| 4864 | at -= sz; |
| 4865 | } |
| 4866 | }, |
| 4867 | maybeSpill: function() { |
| 4868 | if (this.children.length <= 10) return; |
| 4869 | var me = this; |
| 4870 | do { |
| 4871 | var spilled = me.children.splice(me.children.length - 5, 5); |
| 4872 | var sibling = new BranchChunk(spilled); |
| 4873 | if (!me.parent) { // Become the parent node |
| 4874 | var copy = new BranchChunk(me.children); |
| 4875 | copy.parent = me; |
| 4876 | me.children = [copy, sibling]; |
| 4877 | me = copy; |
| 4878 | } else { |
| 4879 | me.size -= sibling.size; |
| 4880 | me.height -= sibling.height; |
| 4881 | var myIndex = indexOf(me.parent.children, me); |
| 4882 | me.parent.children.splice(myIndex + 1, 0, sibling); |
| 4883 | } |
| 4884 | sibling.parent = me.parent; |
| 4885 | } while (me.children.length > 10); |
| 4886 | me.parent.maybeSpill(); |
| 4887 | }, |
| 4888 | iterN: function(at, n, op) { |
| 4889 | for (var i = 0, e = this.children.length; i < e; ++i) { |
| 4890 | var child = this.children[i], sz = child.chunkSize(); |
| 4891 | if (at < sz) { |
| 4892 | var used = Math.min(n, sz - at); |
| 4893 | if (child.iterN(at, used, op)) return true; |
| 4894 | if ((n -= used) == 0) break; |
| 4895 | at = 0; |
| 4896 | } else at -= sz; |
| 4897 | } |
| 4898 | } |
| 4899 | }; |
| 4900 | |
| 4901 | var nextDocId = 0; |
| 4902 | var Doc = CodeMirror.Doc = function(text, mode, firstLine) { |
| 4903 | if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); |
| 4904 | if (firstLine == null) firstLine = 0; |
| 4905 | |
| 4906 | BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); |
| 4907 | this.first = firstLine; |
| 4908 | this.scrollTop = this.scrollLeft = 0; |
| 4909 | this.cantEdit = false; |
| 4910 | this.history = makeHistory(); |
| 4911 | this.cleanGeneration = 1; |
| 4912 | this.frontier = firstLine; |
| 4913 | var start = Pos(firstLine, 0); |
| 4914 | this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; |
| 4915 | this.id = ++nextDocId; |
| 4916 | this.modeOption = mode; |
| 4917 | |
| 4918 | if (typeof text == "string") text = splitLines(text); |
| 4919 | updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); |
| 4920 | }; |
| 4921 | |
| 4922 | Doc.prototype = createObj(BranchChunk.prototype, { |
| 4923 | constructor: Doc, |
| 4924 | iter: function(from, to, op) { |
| 4925 | if (op) this.iterN(from - this.first, to - from, op); |
| 4926 | else this.iterN(this.first, this.first + this.size, from); |
| 4927 | }, |
| 4928 | |
| 4929 | insert: function(at, lines) { |
| 4930 | var height = 0; |
| 4931 | for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; |
| 4932 | this.insertInner(at - this.first, lines, height); |
| 4933 | }, |
| 4934 | remove: function(at, n) { this.removeInner(at - this.first, n); }, |
| 4935 | |
| 4936 | getValue: function(lineSep) { |
| 4937 | var lines = getLines(this, this.first, this.first + this.size); |
| 4938 | if (lineSep === false) return lines; |
| 4939 | return lines.join(lineSep || "\n"); |
| 4940 | }, |
| 4941 | setValue: function(code) { |
| 4942 | var top = Pos(this.first, 0), last = this.first + this.size - 1; |
| 4943 | makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), |
| 4944 | text: splitLines(code), origin: "setValue"}, |
| 4945 | {head: top, anchor: top}, true); |
| 4946 | }, |
| 4947 | replaceRange: function(code, from, to, origin) { |
| 4948 | from = clipPos(this, from); |
| 4949 | to = to ? clipPos(this, to) : from; |
| 4950 | replaceRange(this, code, from, to, origin); |
| 4951 | }, |
| 4952 | getRange: function(from, to, lineSep) { |
| 4953 | var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); |
| 4954 | if (lineSep === false) return lines; |
| 4955 | return lines.join(lineSep || "\n"); |
| 4956 | }, |
| 4957 | |
| 4958 | getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, |
| 4959 | setLine: function(line, text) { |
| 4960 | if (isLine(this, line)) |
| 4961 | replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); |
| 4962 | }, |
| 4963 | removeLine: function(line) { |
| 4964 | if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); |
| 4965 | else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); |
| 4966 | }, |
| 4967 | |
| 4968 | getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, |
| 4969 | getLineNumber: function(line) {return lineNo(line);}, |
| 4970 | |
| 4971 | getLineHandleVisualStart: function(line) { |
| 4972 | if (typeof line == "number") line = getLine(this, line); |
| 4973 | return visualLine(this, line); |
| 4974 | }, |
| 4975 | |
| 4976 | lineCount: function() {return this.size;}, |
| 4977 | firstLine: function() {return this.first;}, |
| 4978 | lastLine: function() {return this.first + this.size - 1;}, |
| 4979 | |
| 4980 | clipPos: function(pos) {return clipPos(this, pos);}, |
| 4981 | |
| 4982 | getCursor: function(start) { |
| 4983 | var sel = this.sel, pos; |
| 4984 | if (start == null || start == "head") pos = sel.head; |
| 4985 | else if (start == "anchor") pos = sel.anchor; |
| 4986 | else if (start == "end" || start === false) pos = sel.to; |
| 4987 | else pos = sel.from; |
| 4988 | return copyPos(pos); |
| 4989 | }, |
| 4990 | somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);}, |
| 4991 | |
| 4992 | setCursor: docOperation(function(line, ch, extend) { |
| 4993 | var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); |
| 4994 | if (extend) extendSelection(this, pos); |
| 4995 | else setSelection(this, pos, pos); |
| 4996 | }), |
| 4997 | setSelection: docOperation(function(anchor, head, bias) { |
| 4998 | setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias); |
| 4999 | }), |
| 5000 | extendSelection: docOperation(function(from, to, bias) { |
| 5001 | extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias); |
| 5002 | }), |
| 5003 | |
| 5004 | getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);}, |
| 5005 | replaceSelection: function(code, collapse, origin) { |
| 5006 | makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); |
| 5007 | }, |
| 5008 | undo: docOperation(function() {makeChangeFromHistory(this, "undo");}), |
| 5009 | redo: docOperation(function() {makeChangeFromHistory(this, "redo");}), |
| 5010 | |
| 5011 | setExtending: function(val) {this.sel.extend = val;}, |
| 5012 | |
| 5013 | historySize: function() { |
| 5014 | var hist = this.history; |
| 5015 | return {undo: hist.done.length, redo: hist.undone.length}; |
| 5016 | }, |
| 5017 | clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);}, |
| 5018 | |
| 5019 | markClean: function() { |
| 5020 | this.cleanGeneration = this.changeGeneration(true); |
| 5021 | }, |
| 5022 | changeGeneration: function(forceSplit) { |
| 5023 | if (forceSplit) |
| 5024 | this.history.lastOp = this.history.lastOrigin = null; |
| 5025 | return this.history.generation; |
| 5026 | }, |
| 5027 | isClean: function (gen) { |
| 5028 | return this.history.generation == (gen || this.cleanGeneration); |
| 5029 | }, |
| 5030 | |
| 5031 | getHistory: function() { |
| 5032 | return {done: copyHistoryArray(this.history.done), |
| 5033 | undone: copyHistoryArray(this.history.undone)}; |
| 5034 | }, |
| 5035 | setHistory: function(histData) { |
| 5036 | var hist = this.history = makeHistory(this.history.maxGeneration); |
| 5037 | hist.done = histData.done.slice(0); |
| 5038 | hist.undone = histData.undone.slice(0); |
| 5039 | }, |
| 5040 | |
| 5041 | markText: function(from, to, options) { |
| 5042 | return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); |
| 5043 | }, |
| 5044 | setBookmark: function(pos, options) { |
| 5045 | var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), |
| 5046 | insertLeft: options && options.insertLeft, |
| 5047 | clearWhenEmpty: false}; |
| 5048 | pos = clipPos(this, pos); |
| 5049 | return markText(this, pos, pos, realOpts, "bookmark"); |
| 5050 | }, |
| 5051 | findMarksAt: function(pos) { |
| 5052 | pos = clipPos(this, pos); |
| 5053 | var markers = [], spans = getLine(this, pos.line).markedSpans; |
| 5054 | if (spans) for (var i = 0; i < spans.length; ++i) { |
| 5055 | var span = spans[i]; |
| 5056 | if ((span.from == null || span.from <= pos.ch) && |
| 5057 | (span.to == null || span.to >= pos.ch)) |
| 5058 | markers.push(span.marker.parent || span.marker); |
| 5059 | } |
| 5060 | return markers; |
| 5061 | }, |
| 5062 | getAllMarks: function() { |
| 5063 | var markers = []; |
| 5064 | this.iter(function(line) { |
| 5065 | var sps = line.markedSpans; |
| 5066 | if (sps) for (var i = 0; i < sps.length; ++i) |
| 5067 | if (sps[i].from != null) markers.push(sps[i].marker); |
| 5068 | }); |
| 5069 | return markers; |
| 5070 | }, |
| 5071 | |
| 5072 | posFromIndex: function(off) { |
| 5073 | var ch, lineNo = this.first; |
| 5074 | this.iter(function(line) { |
| 5075 | var sz = line.text.length + 1; |
| 5076 | if (sz > off) { ch = off; return true; } |
| 5077 | off -= sz; |
| 5078 | ++lineNo; |
| 5079 | }); |
| 5080 | return clipPos(this, Pos(lineNo, ch)); |
| 5081 | }, |
| 5082 | indexFromPos: function (coords) { |
| 5083 | coords = clipPos(this, coords); |
| 5084 | var index = coords.ch; |
| 5085 | if (coords.line < this.first || coords.ch < 0) return 0; |
| 5086 | this.iter(this.first, coords.line, function (line) { |
| 5087 | index += line.text.length + 1; |
| 5088 | }); |
| 5089 | return index; |
| 5090 | }, |
| 5091 | |
| 5092 | copy: function(copyHistory) { |
| 5093 | var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); |
| 5094 | doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; |
| 5095 | doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, |
| 5096 | shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; |
| 5097 | if (copyHistory) { |
| 5098 | doc.history.undoDepth = this.history.undoDepth; |
| 5099 | doc.setHistory(this.getHistory()); |
| 5100 | } |
| 5101 | return doc; |
| 5102 | }, |
| 5103 | |
| 5104 | linkedDoc: function(options) { |
| 5105 | if (!options) options = {}; |
| 5106 | var from = this.first, to = this.first + this.size; |
| 5107 | if (options.from != null && options.from > from) from = options.from; |
| 5108 | if (options.to != null && options.to < to) to = options.to; |
| 5109 | var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); |
| 5110 | if (options.sharedHist) copy.history = this.history; |
| 5111 | (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); |
| 5112 | copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; |
| 5113 | return copy; |
| 5114 | }, |
| 5115 | unlinkDoc: function(other) { |
| 5116 | if (other instanceof CodeMirror) other = other.doc; |
| 5117 | if (this.linked) for (var i = 0; i < this.linked.length; ++i) { |
| 5118 | var link = this.linked[i]; |
| 5119 | if (link.doc != other) continue; |
| 5120 | this.linked.splice(i, 1); |
| 5121 | other.unlinkDoc(this); |
| 5122 | break; |
| 5123 | } |
| 5124 | // If the histories were shared, split them again |
| 5125 | if (other.history == this.history) { |
| 5126 | var splitIds = [other.id]; |
| 5127 | linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); |
| 5128 | other.history = makeHistory(); |
| 5129 | other.history.done = copyHistoryArray(this.history.done, splitIds); |
| 5130 | other.history.undone = copyHistoryArray(this.history.undone, splitIds); |
| 5131 | } |
| 5132 | }, |
| 5133 | iterLinkedDocs: function(f) {linkedDocs(this, f);}, |
| 5134 | |
| 5135 | getMode: function() {return this.mode;}, |
| 5136 | getEditor: function() {return this.cm;} |
| 5137 | }); |
| 5138 | |
| 5139 | Doc.prototype.eachLine = Doc.prototype.iter; |
| 5140 | |
| 5141 | // The Doc methods that should be available on CodeMirror instances |
| 5142 | var dontDelegate = "iter insert remove copy getEditor".split(" "); |
| 5143 | for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) |
| 5144 | CodeMirror.prototype[prop] = (function(method) { |
| 5145 | return function() {return method.apply(this.doc, arguments);}; |
| 5146 | })(Doc.prototype[prop]); |
| 5147 | |
| 5148 | eventMixin(Doc); |
| 5149 | |
| 5150 | function linkedDocs(doc, f, sharedHistOnly) { |
| 5151 | function propagate(doc, skip, sharedHist) { |
| 5152 | if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { |
| 5153 | var rel = doc.linked[i]; |
| 5154 | if (rel.doc == skip) continue; |
| 5155 | var shared = sharedHist && rel.sharedHist; |
| 5156 | if (sharedHistOnly && !shared) continue; |
| 5157 | f(rel.doc, shared); |
| 5158 | propagate(rel.doc, doc, shared); |
| 5159 | } |
| 5160 | } |
| 5161 | propagate(doc, null, true); |
| 5162 | } |
| 5163 | |
| 5164 | function attachDoc(cm, doc) { |
| 5165 | if (doc.cm) throw new Error("This document is already in use."); |
| 5166 | cm.doc = doc; |
| 5167 | doc.cm = cm; |
| 5168 | estimateLineHeights(cm); |
| 5169 | loadMode(cm); |
| 5170 | if (!cm.options.lineWrapping) computeMaxLength(cm); |
| 5171 | cm.options.mode = doc.modeOption; |
| 5172 | regChange(cm); |
| 5173 | } |
| 5174 | |
| 5175 | // LINE UTILITIES |
| 5176 | |
| 5177 | function getLine(chunk, n) { |
| 5178 | n -= chunk.first; |
| 5179 | while (!chunk.lines) { |
| 5180 | for (var i = 0;; ++i) { |
| 5181 | var child = chunk.children[i], sz = child.chunkSize(); |
| 5182 | if (n < sz) { chunk = child; break; } |
| 5183 | n -= sz; |
| 5184 | } |
| 5185 | } |
| 5186 | return chunk.lines[n]; |
| 5187 | } |
| 5188 | |
| 5189 | function getBetween(doc, start, end) { |
| 5190 | var out = [], n = start.line; |
| 5191 | doc.iter(start.line, end.line + 1, function(line) { |
| 5192 | var text = line.text; |
| 5193 | if (n == end.line) text = text.slice(0, end.ch); |
| 5194 | if (n == start.line) text = text.slice(start.ch); |
| 5195 | out.push(text); |
| 5196 | ++n; |
| 5197 | }); |
| 5198 | return out; |
| 5199 | } |
| 5200 | function getLines(doc, from, to) { |
| 5201 | var out = []; |
| 5202 | doc.iter(from, to, function(line) { out.push(line.text); }); |
| 5203 | return out; |
| 5204 | } |
| 5205 | |
| 5206 | function updateLineHeight(line, height) { |
| 5207 | var diff = height - line.height; |
| 5208 | for (var n = line; n; n = n.parent) n.height += diff; |
| 5209 | } |
| 5210 | |
| 5211 | function lineNo(line) { |
| 5212 | if (line.parent == null) return null; |
| 5213 | var cur = line.parent, no = indexOf(cur.lines, line); |
| 5214 | for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { |
| 5215 | for (var i = 0;; ++i) { |
| 5216 | if (chunk.children[i] == cur) break; |
| 5217 | no += chunk.children[i].chunkSize(); |
| 5218 | } |
| 5219 | } |
| 5220 | return no + cur.first; |
| 5221 | } |
| 5222 | |
| 5223 | function lineAtHeight(chunk, h) { |
| 5224 | var n = chunk.first; |
| 5225 | outer: do { |
| 5226 | for (var i = 0, e = chunk.children.length; i < e; ++i) { |
| 5227 | var child = chunk.children[i], ch = child.height; |
| 5228 | if (h < ch) { chunk = child; continue outer; } |
| 5229 | h -= ch; |
| 5230 | n += child.chunkSize(); |
| 5231 | } |
| 5232 | return n; |
| 5233 | } while (!chunk.lines); |
| 5234 | for (var i = 0, e = chunk.lines.length; i < e; ++i) { |
| 5235 | var line = chunk.lines[i], lh = line.height; |
| 5236 | if (h < lh) break; |
| 5237 | h -= lh; |
| 5238 | } |
| 5239 | return n + i; |
| 5240 | } |
| 5241 | |
| 5242 | function heightAtLine(cm, lineObj) { |
| 5243 | lineObj = visualLine(cm.doc, lineObj); |
| 5244 | |
| 5245 | var h = 0, chunk = lineObj.parent; |
| 5246 | for (var i = 0; i < chunk.lines.length; ++i) { |
| 5247 | var line = chunk.lines[i]; |
| 5248 | if (line == lineObj) break; |
| 5249 | else h += line.height; |
| 5250 | } |
| 5251 | for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { |
| 5252 | for (var i = 0; i < p.children.length; ++i) { |
| 5253 | var cur = p.children[i]; |
| 5254 | if (cur == chunk) break; |
| 5255 | else h += cur.height; |
| 5256 | } |
| 5257 | } |
| 5258 | return h; |
| 5259 | } |
| 5260 | |
| 5261 | function getOrder(line) { |
| 5262 | var order = line.order; |
| 5263 | if (order == null) order = line.order = bidiOrdering(line.text); |
| 5264 | return order; |
| 5265 | } |
| 5266 | |
| 5267 | // HISTORY |
| 5268 | |
| 5269 | function makeHistory(startGen) { |
| 5270 | return { |
| 5271 | // Arrays of history events. Doing something adds an event to |
| 5272 | // done and clears undo. Undoing moves events from done to |
| 5273 | // undone, redoing moves them in the other direction. |
| 5274 | done: [], undone: [], undoDepth: Infinity, |
| 5275 | // Used to track when changes can be merged into a single undo |
| 5276 | // event |
| 5277 | lastTime: 0, lastOp: null, lastOrigin: null, |
| 5278 | // Used by the isClean() method |
| 5279 | generation: startGen || 1, maxGeneration: startGen || 1 |
| 5280 | }; |
| 5281 | } |
| 5282 | |
| 5283 | function attachLocalSpans(doc, change, from, to) { |
| 5284 | var existing = change["spans_" + doc.id], n = 0; |
| 5285 | doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { |
| 5286 | if (line.markedSpans) |
| 5287 | (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; |
| 5288 | ++n; |
| 5289 | }); |
| 5290 | } |
| 5291 | |
| 5292 | function historyChangeFromChange(doc, change) { |
| 5293 | var from = { line: change.from.line, ch: change.from.ch }; |
| 5294 | var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; |
| 5295 | attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); |
| 5296 | linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); |
| 5297 | return histChange; |
| 5298 | } |
| 5299 | |
| 5300 | function addToHistory(doc, change, selAfter, opId) { |
| 5301 | var hist = doc.history; |
| 5302 | hist.undone.length = 0; |
| 5303 | var time = +new Date, cur = lst(hist.done); |
| 5304 | |
| 5305 | if (cur && |
| 5306 | (hist.lastOp == opId || |
| 5307 | hist.lastOrigin == change.origin && change.origin && |
| 5308 | ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || |
| 5309 | change.origin.charAt(0) == "*"))) { |
| 5310 | // Merge this change into the last event |
| 5311 | var last = lst(cur.changes); |
| 5312 | if (posEq(change.from, change.to) && posEq(change.from, last.to)) { |
| 5313 | // Optimized case for simple insertion -- don't want to add |
| 5314 | // new changesets for every character typed |
| 5315 | last.to = changeEnd(change); |
| 5316 | } else { |
| 5317 | // Add new sub-event |
| 5318 | cur.changes.push(historyChangeFromChange(doc, change)); |
| 5319 | } |
| 5320 | cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; |
| 5321 | } else { |
| 5322 | // Can not be merged, start a new event. |
| 5323 | cur = {changes: [historyChangeFromChange(doc, change)], |
| 5324 | generation: hist.generation, |
| 5325 | anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, |
| 5326 | anchorAfter: selAfter.anchor, headAfter: selAfter.head}; |
| 5327 | hist.done.push(cur); |
| 5328 | while (hist.done.length > hist.undoDepth) |
| 5329 | hist.done.shift(); |
| 5330 | } |
| 5331 | hist.generation = ++hist.maxGeneration; |
| 5332 | hist.lastTime = time; |
| 5333 | hist.lastOp = opId; |
| 5334 | hist.lastOrigin = change.origin; |
| 5335 | |
| 5336 | if (!last) signal(doc, "historyAdded"); |
| 5337 | } |
| 5338 | |
| 5339 | function removeClearedSpans(spans) { |
| 5340 | if (!spans) return null; |
| 5341 | for (var i = 0, out; i < spans.length; ++i) { |
| 5342 | if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } |
| 5343 | else if (out) out.push(spans[i]); |
| 5344 | } |
| 5345 | return !out ? spans : out.length ? out : null; |
| 5346 | } |
| 5347 | |
| 5348 | function getOldSpans(doc, change) { |
| 5349 | var found = change["spans_" + doc.id]; |
| 5350 | if (!found) return null; |
| 5351 | for (var i = 0, nw = []; i < change.text.length; ++i) |
| 5352 | nw.push(removeClearedSpans(found[i])); |
| 5353 | return nw; |
| 5354 | } |
| 5355 | |
| 5356 | // Used both to provide a JSON-safe object in .getHistory, and, when |
| 5357 | // detaching a document, to split the history in two |
| 5358 | function copyHistoryArray(events, newGroup) { |
| 5359 | for (var i = 0, copy = []; i < events.length; ++i) { |
| 5360 | var event = events[i], changes = event.changes, newChanges = []; |
| 5361 | copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, |
| 5362 | anchorAfter: event.anchorAfter, headAfter: event.headAfter}); |
| 5363 | for (var j = 0; j < changes.length; ++j) { |
| 5364 | var change = changes[j], m; |
| 5365 | newChanges.push({from: change.from, to: change.to, text: change.text}); |
| 5366 | if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { |
| 5367 | if (indexOf(newGroup, Number(m[1])) > -1) { |
| 5368 | lst(newChanges)[prop] = change[prop]; |
| 5369 | delete change[prop]; |
| 5370 | } |
| 5371 | } |
| 5372 | } |
| 5373 | } |
| 5374 | return copy; |
| 5375 | } |
| 5376 | |
| 5377 | // Rebasing/resetting history to deal with externally-sourced changes |
| 5378 | |
| 5379 | function rebaseHistSel(pos, from, to, diff) { |
| 5380 | if (to < pos.line) { |
| 5381 | pos.line += diff; |
| 5382 | } else if (from < pos.line) { |
| 5383 | pos.line = from; |
| 5384 | pos.ch = 0; |
| 5385 | } |
| 5386 | } |
| 5387 | |
| 5388 | // Tries to rebase an array of history events given a change in the |
| 5389 | // document. If the change touches the same lines as the event, the |
| 5390 | // event, and everything 'behind' it, is discarded. If the change is |
| 5391 | // before the event, the event's positions are updated. Uses a |
| 5392 | // copy-on-write scheme for the positions, to avoid having to |
| 5393 | // reallocate them all on every rebase, but also avoid problems with |
| 5394 | // shared position objects being unsafely updated. |
| 5395 | function rebaseHistArray(array, from, to, diff) { |
| 5396 | for (var i = 0; i < array.length; ++i) { |
| 5397 | var sub = array[i], ok = true; |
| 5398 | for (var j = 0; j < sub.changes.length; ++j) { |
| 5399 | var cur = sub.changes[j]; |
| 5400 | if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); } |
| 5401 | if (to < cur.from.line) { |
| 5402 | cur.from.line += diff; |
| 5403 | cur.to.line += diff; |
| 5404 | } else if (from <= cur.to.line) { |
| 5405 | ok = false; |
| 5406 | break; |
| 5407 | } |
| 5408 | } |
| 5409 | if (!sub.copied) { |
| 5410 | sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore); |
| 5411 | sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter); |
| 5412 | sub.copied = true; |
| 5413 | } |
| 5414 | if (!ok) { |
| 5415 | array.splice(0, i + 1); |
| 5416 | i = 0; |
| 5417 | } else { |
| 5418 | rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore); |
| 5419 | rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter); |
| 5420 | } |
| 5421 | } |
| 5422 | } |
| 5423 | |
| 5424 | function rebaseHist(hist, change) { |
| 5425 | var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; |
| 5426 | rebaseHistArray(hist.done, from, to, diff); |
| 5427 | rebaseHistArray(hist.undone, from, to, diff); |
| 5428 | } |
| 5429 | |
| 5430 | // EVENT OPERATORS |
| 5431 | |
| 5432 | function stopMethod() {e_stop(this);} |
| 5433 | // Ensure an event has a stop method. |
| 5434 | function addStop(event) { |
| 5435 | if (!event.stop) event.stop = stopMethod; |
| 5436 | return event; |
| 5437 | } |
| 5438 | |
| 5439 | function e_preventDefault(e) { |
| 5440 | if (e.preventDefault) e.preventDefault(); |
| 5441 | else e.returnValue = false; |
| 5442 | } |
| 5443 | function e_stopPropagation(e) { |
| 5444 | if (e.stopPropagation) e.stopPropagation(); |
| 5445 | else e.cancelBubble = true; |
| 5446 | } |
| 5447 | function e_defaultPrevented(e) { |
| 5448 | return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; |
| 5449 | } |
| 5450 | function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} |
| 5451 | CodeMirror.e_stop = e_stop; |
| 5452 | CodeMirror.e_preventDefault = e_preventDefault; |
| 5453 | CodeMirror.e_stopPropagation = e_stopPropagation; |
| 5454 | |
| 5455 | function e_target(e) {return e.target || e.srcElement;} |
| 5456 | function e_button(e) { |
| 5457 | var b = e.which; |
| 5458 | if (b == null) { |
| 5459 | if (e.button & 1) b = 1; |
| 5460 | else if (e.button & 2) b = 3; |
| 5461 | else if (e.button & 4) b = 2; |
| 5462 | } |
| 5463 | if (mac && e.ctrlKey && b == 1) b = 3; |
| 5464 | return b; |
| 5465 | } |
| 5466 | |
| 5467 | // EVENT HANDLING |
| 5468 | |
| 5469 | function on(emitter, type, f) { |
| 5470 | if (emitter.addEventListener) |
| 5471 | emitter.addEventListener(type, f, false); |
| 5472 | else if (emitter.attachEvent) |
| 5473 | emitter.attachEvent("on" + type, f); |
| 5474 | else { |
| 5475 | var map = emitter._handlers || (emitter._handlers = {}); |
| 5476 | var arr = map[type] || (map[type] = []); |
| 5477 | arr.push(f); |
| 5478 | } |
| 5479 | } |
| 5480 | |
| 5481 | function off(emitter, type, f) { |
| 5482 | if (emitter.removeEventListener) |
| 5483 | emitter.removeEventListener(type, f, false); |
| 5484 | else if (emitter.detachEvent) |
| 5485 | emitter.detachEvent("on" + type, f); |
| 5486 | else { |
| 5487 | var arr = emitter._handlers && emitter._handlers[type]; |
| 5488 | if (!arr) return; |
| 5489 | for (var i = 0; i < arr.length; ++i) |
| 5490 | if (arr[i] == f) { arr.splice(i, 1); break; } |
| 5491 | } |
| 5492 | } |
| 5493 | |
| 5494 | function signal(emitter, type /*, values...*/) { |
| 5495 | var arr = emitter._handlers && emitter._handlers[type]; |
| 5496 | if (!arr) return; |
| 5497 | var args = Array.prototype.slice.call(arguments, 2); |
| 5498 | for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); |
| 5499 | } |
| 5500 | |
| 5501 | var delayedCallbacks, delayedCallbackDepth = 0; |
| 5502 | function signalLater(emitter, type /*, values...*/) { |
| 5503 | var arr = emitter._handlers && emitter._handlers[type]; |
| 5504 | if (!arr) return; |
| 5505 | var args = Array.prototype.slice.call(arguments, 2); |
| 5506 | if (!delayedCallbacks) { |
| 5507 | ++delayedCallbackDepth; |
| 5508 | delayedCallbacks = []; |
| 5509 | setTimeout(fireDelayed, 0); |
| 5510 | } |
| 5511 | function bnd(f) {return function(){f.apply(null, args);};}; |
| 5512 | for (var i = 0; i < arr.length; ++i) |
| 5513 | delayedCallbacks.push(bnd(arr[i])); |
| 5514 | } |
| 5515 | |
| 5516 | function signalDOMEvent(cm, e, override) { |
| 5517 | signal(cm, override || e.type, cm, e); |
| 5518 | return e_defaultPrevented(e) || e.codemirrorIgnore; |
| 5519 | } |
| 5520 | |
| 5521 | function fireDelayed() { |
| 5522 | --delayedCallbackDepth; |
| 5523 | var delayed = delayedCallbacks; |
| 5524 | delayedCallbacks = null; |
| 5525 | for (var i = 0; i < delayed.length; ++i) delayed[i](); |
| 5526 | } |
| 5527 | |
| 5528 | function hasHandler(emitter, type) { |
| 5529 | var arr = emitter._handlers && emitter._handlers[type]; |
| 5530 | return arr && arr.length > 0; |
| 5531 | } |
| 5532 | |
| 5533 | CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; |
| 5534 | |
| 5535 | function eventMixin(ctor) { |
| 5536 | ctor.prototype.on = function(type, f) {on(this, type, f);}; |
| 5537 | ctor.prototype.off = function(type, f) {off(this, type, f);}; |
| 5538 | } |
| 5539 | |
| 5540 | // MISC UTILITIES |
| 5541 | |
| 5542 | // Number of pixels added to scroller and sizer to hide scrollbar |
| 5543 | var scrollerCutOff = 30; |
| 5544 | |
| 5545 | // Returned or thrown by various protocols to signal 'I'm not |
| 5546 | // handling this'. |
| 5547 | var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; |
| 5548 | |
| 5549 | function Delayed() {this.id = null;} |
| 5550 | Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; |
| 5551 | |
| 5552 | // Counts the column offset in a string, taking tabs into account. |
| 5553 | // Used mostly to find indentation. |
| 5554 | function countColumn(string, end, tabSize, startIndex, startValue) { |
| 5555 | if (end == null) { |
| 5556 | end = string.search(/[^\s\u00a0]/); |
| 5557 | if (end == -1) end = string.length; |
| 5558 | } |
| 5559 | for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { |
| 5560 | if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); |
| 5561 | else ++n; |
| 5562 | } |
| 5563 | return n; |
| 5564 | } |
| 5565 | CodeMirror.countColumn = countColumn; |
| 5566 | |
| 5567 | var spaceStrs = [""]; |
| 5568 | function spaceStr(n) { |
| 5569 | while (spaceStrs.length <= n) |
| 5570 | spaceStrs.push(lst(spaceStrs) + " "); |
| 5571 | return spaceStrs[n]; |
| 5572 | } |
| 5573 | |
| 5574 | function lst(arr) { return arr[arr.length-1]; } |
| 5575 | |
| 5576 | function selectInput(node) { |
| 5577 | if (ios) { // Mobile Safari apparently has a bug where select() is broken. |
| 5578 | node.selectionStart = 0; |
| 5579 | node.selectionEnd = node.value.length; |
| 5580 | } else { |
| 5581 | // Suppress mysterious IE10 errors |
| 5582 | try { node.select(); } |
| 5583 | catch(_e) {} |
| 5584 | } |
| 5585 | } |
| 5586 | |
| 5587 | function indexOf(collection, elt) { |
| 5588 | if (collection.indexOf) return collection.indexOf(elt); |
| 5589 | for (var i = 0, e = collection.length; i < e; ++i) |
| 5590 | if (collection[i] == elt) return i; |
| 5591 | return -1; |
| 5592 | } |
| 5593 | |
| 5594 | function createObj(base, props) { |
| 5595 | function Obj() {} |
| 5596 | Obj.prototype = base; |
| 5597 | var inst = new Obj(); |
| 5598 | if (props) copyObj(props, inst); |
| 5599 | return inst; |
| 5600 | } |
| 5601 | |
| 5602 | function copyObj(obj, target) { |
| 5603 | if (!target) target = {}; |
| 5604 | for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; |
| 5605 | return target; |
| 5606 | } |
| 5607 | |
| 5608 | function emptyArray(size) { |
| 5609 | for (var a = [], i = 0; i < size; ++i) a.push(undefined); |
| 5610 | return a; |
| 5611 | } |
| 5612 | |
| 5613 | function bind(f) { |
| 5614 | var args = Array.prototype.slice.call(arguments, 1); |
| 5615 | return function(){return f.apply(null, args);}; |
| 5616 | } |
| 5617 | |
| 5618 | var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; |
| 5619 | function isWordChar(ch) { |
| 5620 | return /\w/.test(ch) || ch > "\x80" && |
| 5621 | (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); |
| 5622 | } |
| 5623 | |
| 5624 | function isEmpty(obj) { |
| 5625 | for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; |
| 5626 | return true; |
| 5627 | } |
| 5628 | |
| 5629 | 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]/; |
| 5630 | function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); } |
| 5631 | |
| 5632 | // DOM UTILITIES |
| 5633 | |
| 5634 | function elt(tag, content, className, style) { |
| 5635 | var e = document.createElement(tag); |
| 5636 | if (className) e.className = className; |
| 5637 | if (style) e.style.cssText = style; |
| 5638 | if (typeof content == "string") setTextContent(e, content); |
| 5639 | else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); |
| 5640 | return e; |
| 5641 | } |
| 5642 | |
| 5643 | function removeChildren(e) { |
| 5644 | for (var count = e.childNodes.length; count > 0; --count) |
| 5645 | e.removeChild(e.firstChild); |
| 5646 | return e; |
| 5647 | } |
| 5648 | |
| 5649 | function removeChildrenAndAdd(parent, e) { |
| 5650 | return removeChildren(parent).appendChild(e); |
| 5651 | } |
| 5652 | |
| 5653 | function setTextContent(e, str) { |
| 5654 | if (ie_lt9) { |
| 5655 | e.innerHTML = ""; |
| 5656 | e.appendChild(document.createTextNode(str)); |
| 5657 | } else e.textContent = str; |
| 5658 | } |
| 5659 | |
| 5660 | function getRect(node) { |
| 5661 | return node.getBoundingClientRect(); |
| 5662 | } |
| 5663 | CodeMirror.replaceGetRect = function(f) { getRect = f; }; |
| 5664 | |
| 5665 | // FEATURE DETECTION |
| 5666 | |
| 5667 | // Detect drag-and-drop |
| 5668 | var dragAndDrop = function() { |
| 5669 | // There is *some* kind of drag-and-drop support in IE6-8, but I |
| 5670 | // couldn't get it to work yet. |
| 5671 | if (ie_lt9) return false; |
| 5672 | var div = elt('div'); |
| 5673 | return "draggable" in div || "dragDrop" in div; |
| 5674 | }(); |
| 5675 | |
| 5676 | // For a reason I have yet to figure out, some browsers disallow |
| 5677 | // word wrapping between certain characters *only* if a new inline |
| 5678 | // element is started between them. This makes it hard to reliably |
| 5679 | // measure the position of things, since that requires inserting an |
| 5680 | // extra span. This terribly fragile set of tests matches the |
| 5681 | // character combinations that suffer from this phenomenon on the |
| 5682 | // various browsers. |
| 5683 | function spanAffectsWrapping() { return false; } |
| 5684 | if (gecko) // Only for "$'" |
| 5685 | spanAffectsWrapping = function(str, i) { |
| 5686 | return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; |
| 5687 | }; |
| 5688 | else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) |
| 5689 | spanAffectsWrapping = function(str, i) { |
| 5690 | return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); |
| 5691 | }; |
| 5692 | else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent)) |
| 5693 | spanAffectsWrapping = function(str, i) { |
| 5694 | var code = str.charCodeAt(i - 1); |
| 5695 | return code >= 8208 && code <= 8212; |
| 5696 | }; |
| 5697 | else if (webkit) |
| 5698 | spanAffectsWrapping = function(str, i) { |
| 5699 | if (i > 1 && str.charCodeAt(i - 1) == 45) { |
| 5700 | if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true; |
| 5701 | if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false; |
| 5702 | } |
| 5703 | return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|\u2026[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); |
| 5704 | }; |
| 5705 | |
| 5706 | var knownScrollbarWidth; |
| 5707 | function scrollbarWidth(measure) { |
| 5708 | if (knownScrollbarWidth != null) return knownScrollbarWidth; |
| 5709 | var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); |
| 5710 | removeChildrenAndAdd(measure, test); |
| 5711 | if (test.offsetWidth) |
| 5712 | knownScrollbarWidth = test.offsetHeight - test.clientHeight; |
| 5713 | return knownScrollbarWidth || 0; |
| 5714 | } |
| 5715 | |
| 5716 | var zwspSupported; |
| 5717 | function zeroWidthElement(measure) { |
| 5718 | if (zwspSupported == null) { |
| 5719 | var test = elt("span", "\u200b"); |
| 5720 | removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); |
| 5721 | if (measure.firstChild.offsetHeight != 0) |
| 5722 | zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; |
| 5723 | } |
| 5724 | if (zwspSupported) return elt("span", "\u200b"); |
| 5725 | else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); |
| 5726 | } |
| 5727 | |
| 5728 | // See if "".split is the broken IE version, if so, provide an |
| 5729 | // alternative way to split lines. |
| 5730 | var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { |
| 5731 | var pos = 0, result = [], l = string.length; |
| 5732 | while (pos <= l) { |
| 5733 | var nl = string.indexOf("\n", pos); |
| 5734 | if (nl == -1) nl = string.length; |
| 5735 | var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); |
| 5736 | var rt = line.indexOf("\r"); |
| 5737 | if (rt != -1) { |
| 5738 | result.push(line.slice(0, rt)); |
| 5739 | pos += rt + 1; |
| 5740 | } else { |
| 5741 | result.push(line); |
| 5742 | pos = nl + 1; |
| 5743 | } |
| 5744 | } |
| 5745 | return result; |
| 5746 | } : function(string){return string.split(/\r\n?|\n/);}; |
| 5747 | CodeMirror.splitLines = splitLines; |
| 5748 | |
| 5749 | var hasSelection = window.getSelection ? function(te) { |
| 5750 | try { return te.selectionStart != te.selectionEnd; } |
| 5751 | catch(e) { return false; } |
| 5752 | } : function(te) { |
| 5753 | try {var range = te.ownerDocument.selection.createRange();} |
| 5754 | catch(e) {} |
| 5755 | if (!range || range.parentElement() != te) return false; |
| 5756 | return range.compareEndPoints("StartToEnd", range) != 0; |
| 5757 | }; |
| 5758 | |
| 5759 | var hasCopyEvent = (function() { |
| 5760 | var e = elt("div"); |
| 5761 | if ("oncopy" in e) return true; |
| 5762 | e.setAttribute("oncopy", "return;"); |
| 5763 | return typeof e.oncopy == 'function'; |
| 5764 | })(); |
| 5765 | |
| 5766 | // KEY NAMING |
| 5767 | |
| 5768 | var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", |
| 5769 | 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", |
| 5770 | 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", |
| 5771 | 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete", |
| 5772 | 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", |
| 5773 | 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", |
| 5774 | 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"}; |
| 5775 | CodeMirror.keyNames = keyNames; |
| 5776 | (function() { |
| 5777 | // Number keys |
| 5778 | for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i); |
| 5779 | // Alphabetic keys |
| 5780 | for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); |
| 5781 | // Function keys |
| 5782 | for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; |
| 5783 | })(); |
| 5784 | |
| 5785 | // BIDI HELPERS |
| 5786 | |
| 5787 | function iterateBidiSections(order, from, to, f) { |
| 5788 | if (!order) return f(from, to, "ltr"); |
| 5789 | var found = false; |
| 5790 | for (var i = 0; i < order.length; ++i) { |
| 5791 | var part = order[i]; |
| 5792 | if (part.from < to && part.to > from || from == to && part.to == from) { |
| 5793 | f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); |
| 5794 | found = true; |
| 5795 | } |
| 5796 | } |
| 5797 | if (!found) f(from, to, "ltr"); |
| 5798 | } |
| 5799 | |
| 5800 | function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } |
| 5801 | function bidiRight(part) { return part.level % 2 ? part.from : part.to; } |
| 5802 | |
| 5803 | function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } |
| 5804 | function lineRight(line) { |
| 5805 | var order = getOrder(line); |
| 5806 | if (!order) return line.text.length; |
| 5807 | return bidiRight(lst(order)); |
| 5808 | } |
| 5809 | |
| 5810 | function lineStart(cm, lineN) { |
| 5811 | var line = getLine(cm.doc, lineN); |
| 5812 | var visual = visualLine(cm.doc, line); |
| 5813 | if (visual != line) lineN = lineNo(visual); |
| 5814 | var order = getOrder(visual); |
| 5815 | var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); |
| 5816 | return Pos(lineN, ch); |
| 5817 | } |
| 5818 | function lineEnd(cm, lineN) { |
| 5819 | var merged, line; |
| 5820 | while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) |
| 5821 | lineN = merged.find().to.line; |
| 5822 | var order = getOrder(line); |
| 5823 | var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); |
| 5824 | return Pos(lineN, ch); |
| 5825 | } |
| 5826 | |
| 5827 | function compareBidiLevel(order, a, b) { |
| 5828 | var linedir = order[0].level; |
| 5829 | if (a == linedir) return true; |
| 5830 | if (b == linedir) return false; |
| 5831 | return a < b; |
| 5832 | } |
| 5833 | var bidiOther; |
| 5834 | function getBidiPartAt(order, pos) { |
| 5835 | bidiOther = null; |
| 5836 | for (var i = 0, found; i < order.length; ++i) { |
| 5837 | var cur = order[i]; |
| 5838 | if (cur.from < pos && cur.to > pos) return i; |
| 5839 | if ((cur.from == pos || cur.to == pos)) { |
| 5840 | if (found == null) { |
| 5841 | found = i; |
| 5842 | } else if (compareBidiLevel(order, cur.level, order[found].level)) { |
| 5843 | if (cur.from != cur.to) bidiOther = found; |
| 5844 | return i; |
| 5845 | } else { |
| 5846 | if (cur.from != cur.to) bidiOther = i; |
| 5847 | return found; |
| 5848 | } |
| 5849 | } |
| 5850 | } |
| 5851 | return found; |
| 5852 | } |
| 5853 | |
| 5854 | function moveInLine(line, pos, dir, byUnit) { |
| 5855 | if (!byUnit) return pos + dir; |
| 5856 | do pos += dir; |
| 5857 | while (pos > 0 && isExtendingChar(line.text.charAt(pos))); |
| 5858 | return pos; |
| 5859 | } |
| 5860 | |
| 5861 | // This is somewhat involved. It is needed in order to move |
| 5862 | // 'visually' through bi-directional text -- i.e., pressing left |
| 5863 | // should make the cursor go left, even when in RTL text. The |
| 5864 | // tricky part is the 'jumps', where RTL and LTR text touch each |
| 5865 | // other. This often requires the cursor offset to move more than |
| 5866 | // one unit, in order to visually move one unit. |
| 5867 | function moveVisually(line, start, dir, byUnit) { |
| 5868 | var bidi = getOrder(line); |
| 5869 | if (!bidi) return moveLogically(line, start, dir, byUnit); |
| 5870 | var pos = getBidiPartAt(bidi, start), part = bidi[pos]; |
| 5871 | var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); |
| 5872 | |
| 5873 | for (;;) { |
| 5874 | if (target > part.from && target < part.to) return target; |
| 5875 | if (target == part.from || target == part.to) { |
| 5876 | if (getBidiPartAt(bidi, target) == pos) return target; |
| 5877 | part = bidi[pos += dir]; |
| 5878 | return (dir > 0) == part.level % 2 ? part.to : part.from; |
| 5879 | } else { |
| 5880 | part = bidi[pos += dir]; |
| 5881 | if (!part) return null; |
| 5882 | if ((dir > 0) == part.level % 2) |
| 5883 | target = moveInLine(line, part.to, -1, byUnit); |
| 5884 | else |
| 5885 | target = moveInLine(line, part.from, 1, byUnit); |
| 5886 | } |
| 5887 | } |
| 5888 | } |
| 5889 | |
| 5890 | function moveLogically(line, start, dir, byUnit) { |
| 5891 | var target = start + dir; |
| 5892 | if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir; |
| 5893 | return target < 0 || target > line.text.length ? null : target; |
| 5894 | } |
| 5895 | |
| 5896 | // Bidirectional ordering algorithm |
| 5897 | // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm |
| 5898 | // that this (partially) implements. |
| 5899 | |
| 5900 | // One-char codes used for character types: |
| 5901 | // L (L): Left-to-Right |
| 5902 | // R (R): Right-to-Left |
| 5903 | // r (AL): Right-to-Left Arabic |
| 5904 | // 1 (EN): European Number |
| 5905 | // + (ES): European Number Separator |
| 5906 | // % (ET): European Number Terminator |
| 5907 | // n (AN): Arabic Number |
| 5908 | // , (CS): Common Number Separator |
| 5909 | // m (NSM): Non-Spacing Mark |
| 5910 | // b (BN): Boundary Neutral |
| 5911 | // s (B): Paragraph Separator |
| 5912 | // t (S): Segment Separator |
| 5913 | // w (WS): Whitespace |
| 5914 | // N (ON): Other Neutrals |
| 5915 | |
| 5916 | // Returns null if characters are ordered as they appear |
| 5917 | // (left-to-right), or an array of sections ({from, to, level} |
| 5918 | // objects) in the order in which they occur visually. |
| 5919 | var bidiOrdering = (function() { |
| 5920 | // Character types for codepoints 0 to 0xff |
| 5921 | var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; |
| 5922 | // Character types for codepoints 0x600 to 0x6ff |
| 5923 | var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; |
| 5924 | function charType(code) { |
| 5925 | if (code <= 0xff) return lowTypes.charAt(code); |
| 5926 | else if (0x590 <= code && code <= 0x5f4) return "R"; |
| 5927 | else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); |
| 5928 | else if (0x700 <= code && code <= 0x8ac) return "r"; |
| 5929 | else return "L"; |
| 5930 | } |
| 5931 | |
| 5932 | var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; |
| 5933 | var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; |
| 5934 | // Browsers seem to always treat the boundaries of block elements as being L. |
| 5935 | var outerType = "L"; |
| 5936 | |
| 5937 | return function(str) { |
| 5938 | if (!bidiRE.test(str)) return false; |
| 5939 | var len = str.length, types = []; |
| 5940 | for (var i = 0, type; i < len; ++i) |
| 5941 | types.push(type = charType(str.charCodeAt(i))); |
| 5942 | |
| 5943 | // W1. Examine each non-spacing mark (NSM) in the level run, and |
| 5944 | // change the type of the NSM to the type of the previous |
| 5945 | // character. If the NSM is at the start of the level run, it will |
| 5946 | // get the type of sor. |
| 5947 | for (var i = 0, prev = outerType; i < len; ++i) { |
| 5948 | var type = types[i]; |
| 5949 | if (type == "m") types[i] = prev; |
| 5950 | else prev = type; |
| 5951 | } |
| 5952 | |
| 5953 | // W2. Search backwards from each instance of a European number |
| 5954 | // until the first strong type (R, L, AL, or sor) is found. If an |
| 5955 | // AL is found, change the type of the European number to Arabic |
| 5956 | // number. |
| 5957 | // W3. Change all ALs to R. |
| 5958 | for (var i = 0, cur = outerType; i < len; ++i) { |
| 5959 | var type = types[i]; |
| 5960 | if (type == "1" && cur == "r") types[i] = "n"; |
| 5961 | else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } |
| 5962 | } |
| 5963 | |
| 5964 | // W4. A single European separator between two European numbers |
| 5965 | // changes to a European number. A single common separator between |
| 5966 | // two numbers of the same type changes to that type. |
| 5967 | for (var i = 1, prev = types[0]; i < len - 1; ++i) { |
| 5968 | var type = types[i]; |
| 5969 | if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; |
| 5970 | else if (type == "," && prev == types[i+1] && |
| 5971 | (prev == "1" || prev == "n")) types[i] = prev; |
| 5972 | prev = type; |
| 5973 | } |
| 5974 | |
| 5975 | // W5. A sequence of European terminators adjacent to European |
| 5976 | // numbers changes to all European numbers. |
| 5977 | // W6. Otherwise, separators and terminators change to Other |
| 5978 | // Neutral. |
| 5979 | for (var i = 0; i < len; ++i) { |
| 5980 | var type = types[i]; |
| 5981 | if (type == ",") types[i] = "N"; |
| 5982 | else if (type == "%") { |
| 5983 | for (var end = i + 1; end < len && types[end] == "%"; ++end) {} |
| 5984 | var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; |
| 5985 | for (var j = i; j < end; ++j) types[j] = replace; |
| 5986 | i = end - 1; |
| 5987 | } |
| 5988 | } |
| 5989 | |
| 5990 | // W7. Search backwards from each instance of a European number |
| 5991 | // until the first strong type (R, L, or sor) is found. If an L is |
| 5992 | // found, then change the type of the European number to L. |
| 5993 | for (var i = 0, cur = outerType; i < len; ++i) { |
| 5994 | var type = types[i]; |
| 5995 | if (cur == "L" && type == "1") types[i] = "L"; |
| 5996 | else if (isStrong.test(type)) cur = type; |
| 5997 | } |
| 5998 | |
| 5999 | // N1. A sequence of neutrals takes the direction of the |
| 6000 | // surrounding strong text if the text on both sides has the same |
| 6001 | // direction. European and Arabic numbers act as if they were R in |
| 6002 | // terms of their influence on neutrals. Start-of-level-run (sor) |
| 6003 | // and end-of-level-run (eor) are used at level run boundaries. |
| 6004 | // N2. Any remaining neutrals take the embedding direction. |
| 6005 | for (var i = 0; i < len; ++i) { |
| 6006 | if (isNeutral.test(types[i])) { |
| 6007 | for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} |
| 6008 | var before = (i ? types[i-1] : outerType) == "L"; |
| 6009 | var after = (end < len ? types[end] : outerType) == "L"; |
| 6010 | var replace = before || after ? "L" : "R"; |
| 6011 | for (var j = i; j < end; ++j) types[j] = replace; |
| 6012 | i = end - 1; |
| 6013 | } |
| 6014 | } |
| 6015 | |
| 6016 | // Here we depart from the documented algorithm, in order to avoid |
| 6017 | // building up an actual levels array. Since there are only three |
| 6018 | // levels (0, 1, 2) in an implementation that doesn't take |
| 6019 | // explicit embedding into account, we can build up the order on |
| 6020 | // the fly, without following the level-based algorithm. |
| 6021 | var order = [], m; |
| 6022 | for (var i = 0; i < len;) { |
| 6023 | if (countsAsLeft.test(types[i])) { |
| 6024 | var start = i; |
| 6025 | for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} |
| 6026 | order.push({from: start, to: i, level: 0}); |
| 6027 | } else { |
| 6028 | var pos = i, at = order.length; |
| 6029 | for (++i; i < len && types[i] != "L"; ++i) {} |
| 6030 | for (var j = pos; j < i;) { |
| 6031 | if (countsAsNum.test(types[j])) { |
| 6032 | if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); |
| 6033 | var nstart = j; |
| 6034 | for (++j; j < i && countsAsNum.test(types[j]); ++j) {} |
| 6035 | order.splice(at, 0, {from: nstart, to: j, level: 2}); |
| 6036 | pos = j; |
| 6037 | } else ++j; |
| 6038 | } |
| 6039 | if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); |
| 6040 | } |
| 6041 | } |
| 6042 | if (order[0].level == 1 && (m = str.match(/^\s+/))) { |
| 6043 | order[0].from = m[0].length; |
| 6044 | order.unshift({from: 0, to: m[0].length, level: 0}); |
| 6045 | } |
| 6046 | if (lst(order).level == 1 && (m = str.match(/\s+$/))) { |
| 6047 | lst(order).to -= m[0].length; |
| 6048 | order.push({from: len - m[0].length, to: len, level: 0}); |
| 6049 | } |
| 6050 | if (order[0].level != lst(order).level) |
| 6051 | order.push({from: len, to: len, level: order[0].level}); |
| 6052 | |
| 6053 | return order; |
| 6054 | }; |
| 6055 | })(); |
| 6056 | |
| 6057 | // THE END |
| 6058 | |
| 6059 | CodeMirror.version = "3.21.1"; |
| 6060 | |
| 6061 | return CodeMirror; |
| 6062 | })(); |
| 6063 | |
| 6064 | /** |
| 6065 | * Java parser for codemirror |
| 6066 | * |
| 6067 | * @author Patrick Wied |
| 6068 | */ |
| 6069 | |
| 6070 | var JavaParser = Editor.Parser = (function() { |
| 6071 | // Token types that can be considered to be atoms. |
| 6072 | var atomicTypes = {"atom": true, "number": true, "string": true, "regexp": true}; |
| 6073 | // Setting that can be used to have JSON data indent properly. |
| 6074 | var json = false; |
| 6075 | // Constructor for the lexical context objects. |
| 6076 | function JavaLexical(indented, column, type, align, prev, info) { |
| 6077 | // indentation at start of this line |
| 6078 | this.indented = indented; |
| 6079 | // column at which this scope was opened |
| 6080 | this.column = column; |
| 6081 | // type of scope ( 'stat' (statement), 'form' (special form), '[', '{', or '(') |
| 6082 | this.type = type; |
| 6083 | // '[', '{', or '(' blocks that have any text after their opening |
| 6084 | // character are said to be 'aligned' -- any lines below are |
| 6085 | // indented all the way to the opening character. |
| 6086 | if (align != null) |
| 6087 | this.align = align; |
| 6088 | // Parent scope, if any. |
| 6089 | this.prev = prev; |
| 6090 | this.info = info; |
| 6091 | } |
| 6092 | |
| 6093 | // java indentation rules. |
| 6094 | function indentJava(lexical) { |
| 6095 | return function(firstChars) { |
| 6096 | var firstChar = firstChars && firstChars.charAt(0), type = lexical.type; |
| 6097 | var closing = firstChar == type; |
| 6098 | if (type == "form" && firstChar == "{") |
| 6099 | return lexical.indented; |
| 6100 | else if (type == "stat" || type == "form") |
| 6101 | return lexical.indented + indentUnit; |
| 6102 | else if (lexical.info == "switch" && !closing) |
| 6103 | return lexical.indented + (/^(?:case|default)\b/.test(firstChars) ? indentUnit : 2 * indentUnit); |
| 6104 | else if (lexical.align) |
| 6105 | return lexical.column - (closing ? 1 : 0); |
| 6106 | else |
| 6107 | return lexical.indented + (closing ? 0 : indentUnit); |
| 6108 | }; |
| 6109 | } |
| 6110 | |
| 6111 | // The parser-iterator-producing function itself. |
| 6112 | function parseJava(input, basecolumn) { |
| 6113 | // Wrap the input in a token stream |
| 6114 | var tokens = tokenizeJava(input); |
| 6115 | // The parser state. cc is a stack of actions that have to be |
| 6116 | // performed to finish the current statement. For example we might |
| 6117 | // know that we still need to find a closing parenthesis and a |
| 6118 | // semicolon. Actions at the end of the stack go first. It is |
| 6119 | // initialized with an infinitely looping action that consumes |
| 6120 | // whole statements. |
| 6121 | var cc = [statements]; |
| 6122 | // The lexical scope, used mostly for indentation. |
| 6123 | var lexical = new JavaLexical(basecolumn || 0, 0, "block", false); |
| 6124 | // Current column, and the indentation at the start of the current |
| 6125 | // line. Used to create lexical scope objects. |
| 6126 | var column = 0; |
| 6127 | var indented = 0; |
| 6128 | // Variables which are used by the mark, cont, and pass functions |
| 6129 | // below to communicate with the driver loop in the 'next' |
| 6130 | // function. |
| 6131 | var consume, marked; |
| 6132 | |
| 6133 | // The iterator object. |
| 6134 | var parser = {next: next, copy: copy}; |
| 6135 | |
| 6136 | function next(){ |
| 6137 | // Start by performing any 'lexical' actions (adjusting the |
| 6138 | // lexical variable), or the operations below will be working |
| 6139 | // with the wrong lexical state. |
| 6140 | while(cc[cc.length - 1].lex) |
| 6141 | cc.pop()(); |
| 6142 | |
| 6143 | // Fetch a token. |
| 6144 | var token = tokens.next(); |
| 6145 | |
| 6146 | // Adjust column and indented. |
| 6147 | if (token.type == "whitespace" && column == 0) |
| 6148 | indented = token.value.length; |
| 6149 | column += token.value.length; |
| 6150 | if (token.content == "\n"){ |
| 6151 | indented = column = 0; |
| 6152 | // If the lexical scope's align property is still undefined at |
| 6153 | // the end of the line, it is an un-aligned scope. |
| 6154 | if (!("align" in lexical)) |
| 6155 | lexical.align = false; |
| 6156 | // Newline tokens get an indentation function associated with |
| 6157 | // them. |
| 6158 | token.indentation = indentJava(lexical); |
| 6159 | |
| 6160 | } |
| 6161 | // No more processing for meaningless tokens. |
| 6162 | if (token.type == "whitespace" || token.type == "comment" || token.type == "javadoc" || token.type == "annotation") |
| 6163 | return token; |
| 6164 | |
| 6165 | // When a meaningful token is found and the lexical scope's |
| 6166 | // align is undefined, it is an aligned scope. |
| 6167 | if (!("align" in lexical)) |
| 6168 | lexical.align = true; |
| 6169 | |
| 6170 | // Execute actions until one 'consumes' the token and we can |
| 6171 | // return it. |
| 6172 | while(true) { |
| 6173 | consume = marked = false; |
| 6174 | // Take and execute the topmost action. |
| 6175 | cc.pop()(token.type, token.content); |
| 6176 | if (consume){ |
| 6177 | // Marked is used to change the style of the current token. |
| 6178 | if (marked) |
| 6179 | token.style = marked; |
| 6180 | return token; |
| 6181 | } |
| 6182 | } |
| 6183 | } |
| 6184 | |
| 6185 | // This makes a copy of the parser state. It stores all the |
| 6186 | // stateful variables in a closure, and returns a function that |
| 6187 | // will restore them when called with a new input stream. Note |
| 6188 | // that the cc array has to be copied, because it is contantly |
| 6189 | // being modified. Lexical objects are not mutated, and context |
| 6190 | // objects are not mutated in a harmful way, so they can be shared |
| 6191 | // between runs of the parser. |
| 6192 | function copy(){ |
| 6193 | var _lexical = lexical, _cc = cc.concat([]), _tokenState = tokens.state; |
| 6194 | |
| 6195 | return function copyParser(input){ |
| 6196 | lexical = _lexical; |
| 6197 | cc = _cc.concat([]); // copies the array |
| 6198 | column = indented = 0; |
| 6199 | tokens = tokenizeJava(input, _tokenState); |
| 6200 | return parser; |
| 6201 | }; |
| 6202 | } |
| 6203 | |
| 6204 | // Helper function for pushing a number of actions onto the cc |
| 6205 | // stack in reverse order. |
| 6206 | function push(fs){ |
| 6207 | for (var i = fs.length - 1; i >= 0; i--) |
| 6208 | cc.push(fs[i]); |
| 6209 | } |
| 6210 | // cont and pass are used by the action functions to add other |
| 6211 | // actions to the stack. cont will cause the current token to be |
| 6212 | // consumed, pass will leave it for the next action. |
| 6213 | function cont(){ |
| 6214 | push(arguments); |
| 6215 | consume = true; |
| 6216 | } |
| 6217 | function pass(){ |
| 6218 | push(arguments); |
| 6219 | consume = false; |
| 6220 | } |
| 6221 | // Used to change the style of the current token. |
| 6222 | function mark(style){ |
| 6223 | marked = style; |
| 6224 | } |
| 6225 | |
| 6226 | // Push a new lexical context of the given type. |
| 6227 | function pushlex(type, info) { |
| 6228 | var result = function(){ |
| 6229 | lexical = new JavaLexical(indented, column, type, null, lexical, info) |
| 6230 | }; |
| 6231 | result.lex = true; |
| 6232 | return result; |
| 6233 | } |
| 6234 | // Pop off the current lexical context. |
| 6235 | function poplex(){ |
| 6236 | lexical = lexical.prev; |
| 6237 | } |
| 6238 | poplex.lex = true; |
| 6239 | // The 'lex' flag on these actions is used by the 'next' function |
| 6240 | // to know they can (and have to) be ran before moving on to the |
| 6241 | // next token. |
| 6242 | |
| 6243 | // Creates an action that discards tokens until it finds one of |
| 6244 | // the given type. |
| 6245 | function expect(wanted){ |
| 6246 | return function expecting(type){ |
| 6247 | if (type == wanted) cont(); |
| 6248 | else cont(arguments.callee); |
| 6249 | }; |
| 6250 | } |
| 6251 | |
| 6252 | // Looks for a statement, and then calls itself. |
| 6253 | function statements(type){ |
| 6254 | return pass(statement, statements); |
| 6255 | } |
| 6256 | // Dispatches various types of statements based on the type of the |
| 6257 | // current token. |
| 6258 | function statement(type){ |
| 6259 | if (type == "keyword a") cont(pushlex("form"), expression, statement, poplex); |
| 6260 | else if (type == "keyword b") cont(pushlex("form"), statement, poplex); |
| 6261 | else if (type == "{") cont(pushlex("}"), block, poplex); |
| 6262 | else if (type == "for") cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"), poplex, statement, poplex); |
| 6263 | else if (type == "variable") cont(pushlex("stat"), maybelabel); |
| 6264 | else if (type == "switch") cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"), block, poplex, poplex); |
| 6265 | else if (type == "case") cont(expression, expect(":")); |
| 6266 | else if (type == "default") cont(expect(":")); |
| 6267 | else if (type == "catch") cont(pushlex("form"), expect("("), function(){}, expect(")"), statement, poplex); |
| 6268 | else if (type == "class") cont(); |
| 6269 | else if (type == "interface") cont(); |
| 6270 | else if (type == "keyword c") cont(statement); |
| 6271 | else pass(pushlex("stat"), expression, expect(";"), poplex); |
| 6272 | } |
| 6273 | // Dispatch expression types. |
| 6274 | function expression(type){ |
| 6275 | if (atomicTypes.hasOwnProperty(type)) cont(maybeoperator); |
| 6276 | //else if (type == "function") cont(functiondef); |
| 6277 | else if (type == "keyword c") cont(expression); |
| 6278 | else if (type == "(") cont(pushlex(")"), expression, expect(")"), poplex, maybeoperator); |
| 6279 | else if (type == "operator") cont(expression); |
| 6280 | else if (type == "[") cont(pushlex("]"), commasep(expression, "]"), poplex, maybeoperator); |
| 6281 | } |
| 6282 | // Called for places where operators, function calls, or |
| 6283 | // subscripts are valid. Will skip on to the next action if none |
| 6284 | // is found. |
| 6285 | function maybeoperator(type){ |
| 6286 | if (type == "operator") cont(expression); |
| 6287 | else if (type == "(") cont(pushlex(")"), expression, commasep(expression, ")"), poplex, maybeoperator); |
| 6288 | else if (type == "[") cont(pushlex("]"), expression, expect("]"), poplex, maybeoperator); |
| 6289 | } |
| 6290 | // When a statement starts with a variable name, it might be a |
| 6291 | // label. If no colon follows, it's a regular statement. |
| 6292 | |
| 6293 | function maybelabel(type){ |
| 6294 | if (type == "(") cont(commasep(function(){}, ")"), poplex, statement); // method definition |
| 6295 | else if (type == "{") cont(poplex, pushlex("}"), block, poplex); // property definition |
| 6296 | else pass(maybeoperator, expect(";"), poplex); |
| 6297 | } |
| 6298 | |
| 6299 | // Parses a comma-separated list of the things that are recognized |
| 6300 | // by the 'what' argument. |
| 6301 | function commasep(what, end){ |
| 6302 | function proceed(type) { |
| 6303 | if (type == ",") cont(what, proceed); |
| 6304 | else if (type == end) cont(); |
| 6305 | else cont(expect(end)); |
| 6306 | }; |
| 6307 | return function commaSeparated(type) { |
| 6308 | if (type == end) cont(); |
| 6309 | else pass(what, proceed); |
| 6310 | }; |
| 6311 | } |
| 6312 | // Look for statements until a closing brace is found. |
| 6313 | function block(type){ |
| 6314 | if (type == "}") cont(); |
| 6315 | else pass(statement, block); |
| 6316 | } |
| 6317 | |
| 6318 | // For loops. |
| 6319 | |
| 6320 | function forspec1(type){ |
| 6321 | if (type == ";") pass(forspec2); |
| 6322 | else pass(forspec2); |
| 6323 | } |
| 6324 | function formaybein(type, value){ |
| 6325 | if (value == "in") cont(expression); |
| 6326 | else cont(maybeoperator, forspec2); |
| 6327 | } |
| 6328 | function forspec2(type, value){ |
| 6329 | if (type == ";") cont(forspec3); |
| 6330 | else if (value == "in") cont(expression); |
| 6331 | else cont(expression, expect(";"), forspec3); |
| 6332 | } |
| 6333 | function forspec3(type) { |
| 6334 | if (type == ")") pass(); |
| 6335 | else cont(expression); |
| 6336 | } |
| 6337 | |
| 6338 | return parser; |
| 6339 | } |
| 6340 | |
| 6341 | return { |
| 6342 | make: parseJava, |
| 6343 | electricChars: "{}:", |
| 6344 | configure: function(obj) { |
| 6345 | if (obj.json != null) json = obj.json; |
| 6346 | } |
| 6347 | }; |
| 6348 | })(); |
| 6349 | /** |
| 6350 | * Java tokenizer for codemirror |
| 6351 | * |
| 6352 | * @author Patrick Wied |
| 6353 | * @version 2010-10-07 |
| 6354 | */ |
| 6355 | var tokenizeJava = (function() { |
| 6356 | // Advance the stream until the given character (not preceded by a |
| 6357 | // backslash) is encountered, or the end of the line is reached. |
| 6358 | function nextUntilUnescaped(source, end) { |
| 6359 | var escaped = false; |
| 6360 | var next; |
| 6361 | while (!source.endOfLine()) { |
| 6362 | var next = source.next(); |
| 6363 | if (next == end && !escaped) |
| 6364 | return false; |
| 6365 | escaped = !escaped && next == "\\"; |
| 6366 | } |
| 6367 | return escaped; |
| 6368 | } |
| 6369 | |
| 6370 | // A map of Java's keywords. The a/b/c keyword distinction is |
| 6371 | // very rough, but it gives the parser enough information to parse |
| 6372 | // correct code correctly (we don't care that much how we parse |
| 6373 | // incorrect code). The style information included in these objects |
| 6374 | // is used by the highlighter to pick the correct CSS style for a |
| 6375 | // token. |
| 6376 | var keywords = function(){ |
| 6377 | function result(type, style){ |
| 6378 | return {type: type, style: "java-" + style}; |
| 6379 | } |
| 6380 | // keywords that take a parenthised expression, and then a |
| 6381 | // statement (if) |
| 6382 | var keywordA = result("keyword a", "keyword"); |
| 6383 | // keywords that take just a statement (else) |
| 6384 | var keywordB = result("keyword b", "keyword"); |
| 6385 | // keywords that optionally take an expression, and form a |
| 6386 | // statement (return) |
| 6387 | var keywordC = result("keyword c", "keyword"); |
| 6388 | var operator = result("operator", "keyword"); |
| 6389 | var atom = result("atom", "atom"); |
| 6390 | |
| 6391 | return { |
| 6392 | "if": keywordA, "while": keywordA, "with": keywordA, |
| 6393 | "else": keywordB, "do": keywordB, "try": keywordB, "finally": keywordB, |
| 6394 | "return": keywordC, "break": keywordC, "continue": keywordC, "new": keywordC, "throw": keywordC, "throws": keywordB, |
| 6395 | "in": operator, "typeof": operator, "instanceof": operator, |
| 6396 | "catch": result("catch", "keyword"), "for": result("for", "keyword"), "switch": result("switch", "keyword"), |
| 6397 | "case": result("case", "keyword"), "default": result("default", "keyword"), |
| 6398 | "true": atom, "false": atom, "null": atom, |
| 6399 | |
| 6400 | "class": result("class", "keyword"), "interface": result("interface", "keyword"), "package": keywordC, "import": keywordC, |
| 6401 | "implements": keywordC, "extends": keywordC, "super": keywordC, |
| 6402 | |
| 6403 | "public": keywordC, "private": keywordC, "protected": keywordC, "transient": keywordC, "this": keywordC, |
| 6404 | "static": keywordC, "final": keywordC, "const": keywordC, "abstract": keywordC, "static": keywordC, |
| 6405 | |
| 6406 | "int": keywordC, "double": keywordC, "long": keywordC, "boolean": keywordC, "char": keywordC, |
| 6407 | "void": keywordC, "byte": keywordC, "float": keywordC, "short": keywordC |
| 6408 | }; |
| 6409 | }(); |
| 6410 | |
| 6411 | // Some helper regexps |
| 6412 | var isOperatorChar = /[+\-*&%=<>!?|]/; |
| 6413 | var isHexDigit = /[0-9A-Fa-f]/; |
| 6414 | var isWordChar = /[\w\$_]/; |
| 6415 | // Wrapper around javaToken that helps maintain parser state (whether |
| 6416 | // we are inside of a multi-line comment and whether the next token |
| 6417 | // could be a regular expression). |
| 6418 | function javaTokenState(inside, regexp) { |
| 6419 | return function(source, setState) { |
| 6420 | var newInside = inside; |
| 6421 | var type = javaToken(inside, regexp, source, function(c) {newInside = c;}); |
| 6422 | var newRegexp = type.type == "operator" || type.type == "keyword c" || type.type.match(/^[\[{}\(,;:]$/); |
| 6423 | if (newRegexp != regexp || newInside != inside) |
| 6424 | setState(javaTokenState(newInside, newRegexp)); |
| 6425 | return type; |
| 6426 | }; |
| 6427 | } |
| 6428 | |
| 6429 | // The token reader, inteded to be used by the tokenizer from |
| 6430 | // tokenize.js (through jsTokenState). Advances the source stream |
| 6431 | // over a token, and returns an object containing the type and style |
| 6432 | // of that token. |
| 6433 | function javaToken(inside, regexp, source, setInside) { |
| 6434 | function readHexNumber(){ |
| 6435 | source.next(); // skip the 'x' |
| 6436 | source.nextWhileMatches(isHexDigit); |
| 6437 | return {type: "number", style: "java-atom"}; |
| 6438 | } |
| 6439 | |
| 6440 | function readNumber() { |
| 6441 | source.nextWhileMatches(/[0-9]/); |
| 6442 | if (source.equals(".")){ |
| 6443 | source.next(); |
| 6444 | source.nextWhileMatches(/[0-9]/); |
| 6445 | } |
| 6446 | if (source.equals("e") || source.equals("E")){ |
| 6447 | source.next(); |
| 6448 | if (source.equals("-")) |
| 6449 | source.next(); |
| 6450 | source.nextWhileMatches(/[0-9]/); |
| 6451 | } |
| 6452 | return {type: "number", style: "java-atom"}; |
| 6453 | } |
| 6454 | // Read a word, look it up in keywords. If not found, it is a |
| 6455 | // variable, otherwise it is a keyword of the type found. |
| 6456 | function readWord() { |
| 6457 | source.nextWhileMatches(isWordChar); |
| 6458 | var word = source.get(); |
| 6459 | var known = keywords.hasOwnProperty(word) && keywords.propertyIsEnumerable(word) && keywords[word]; |
| 6460 | return known ? {type: known.type, style: known.style, content: word} : |
| 6461 | {type: "variable", style: "java-variable", content: word}; |
| 6462 | } |
| 6463 | function readRegexp() { |
| 6464 | nextUntilUnescaped(source, "/"); |
| 6465 | source.nextWhileMatches(/[gi]/); |
| 6466 | return {type: "regexp", style: "java-string"}; |
| 6467 | } |
| 6468 | // Mutli-line comments are tricky. We want to return the newlines |
| 6469 | // embedded in them as regular newline tokens, and then continue |
| 6470 | // returning a comment token for every line of the comment. So |
| 6471 | // some state has to be saved (inside) to indicate whether we are |
| 6472 | // inside a /* */ sequence. |
| 6473 | function readMultilineComment(start){ |
| 6474 | var newInside = "/*"; |
| 6475 | var maybeEnd = (start == "*"); |
| 6476 | while (true) { |
| 6477 | if (source.endOfLine()) |
| 6478 | break; |
| 6479 | var next = source.next(); |
| 6480 | if (next == "/" && maybeEnd){ |
| 6481 | newInside = null; |
| 6482 | break; |
| 6483 | } |
| 6484 | maybeEnd = (next == "*"); |
| 6485 | } |
| 6486 | setInside(newInside); |
| 6487 | return {type: "comment", style: "java-comment"}; |
| 6488 | } |
| 6489 | |
| 6490 | // for reading javadoc |
| 6491 | function readJavaDocComment(start){ |
| 6492 | var newInside = "/**"; |
| 6493 | var maybeEnd = (start == "*"); |
| 6494 | while (true) { |
| 6495 | if (source.endOfLine()) |
| 6496 | break; |
| 6497 | var next = source.next(); |
| 6498 | if (next == "/" && maybeEnd){ |
| 6499 | newInside = null; |
| 6500 | break; |
| 6501 | } |
| 6502 | maybeEnd = (next == "*"); |
| 6503 | } |
| 6504 | setInside(newInside); |
| 6505 | return {type: "javadoc", style: "javadoc-comment"}; |
| 6506 | } |
| 6507 | // for reading annotations (word based) |
| 6508 | function readAnnotation(){ |
| 6509 | source.nextWhileMatches(isWordChar); |
| 6510 | var word = source.get(); |
| 6511 | return {type: "annotation", style: "java-annotation", content:word}; |
| 6512 | } |
| 6513 | |
| 6514 | function readOperator() { |
| 6515 | source.nextWhileMatches(isOperatorChar); |
| 6516 | return {type: "operator", style: "java-operator"}; |
| 6517 | } |
| 6518 | function readString(quote) { |
| 6519 | var endBackSlash = nextUntilUnescaped(source, quote); |
| 6520 | setInside(endBackSlash ? quote : null); |
| 6521 | return {type: "string", style: "java-string"}; |
| 6522 | } |
| 6523 | |
| 6524 | // Fetch the next token. Dispatches on first character in the |
| 6525 | // stream, or first two characters when the first is a slash. |
| 6526 | if (inside == "\"" || inside == "'") |
| 6527 | return readString(inside); |
| 6528 | var ch = source.next(); |
| 6529 | if (inside == "/*") |
| 6530 | return readMultilineComment(ch); |
| 6531 | else if(inside == "/**") |
| 6532 | return readJavaDocComment(ch); |
| 6533 | else if (ch == "\"" || ch == "'") |
| 6534 | return readString(ch); |
| 6535 | // with punctuation, the type of the token is the symbol itself |
| 6536 | else if (/[\[\]{}\(\),;\:\.]/.test(ch)) |
| 6537 | return {type: ch, style: "java-punctuation"}; |
| 6538 | else if (ch == "0" && (source.equals("x") || source.equals("X"))) |
| 6539 | return readHexNumber(); |
| 6540 | else if (/[0-9]/.test(ch)) |
| 6541 | return readNumber(); |
| 6542 | else if (ch == "@"){ |
| 6543 | return readAnnotation(); |
| 6544 | }else if (ch == "/"){ |
| 6545 | if (source.equals("*")){ |
| 6546 | source.next(); |
| 6547 | |
| 6548 | if(source.equals("*")) |
| 6549 | return readJavaDocComment(ch); |
| 6550 | |
| 6551 | return readMultilineComment(ch); |
| 6552 | } |
| 6553 | else if (source.equals("/")) |
| 6554 | { nextUntilUnescaped(source, null); return {type: "comment", style: "java-comment"};} |
| 6555 | else if (regexp) |
| 6556 | return readRegexp(); |
| 6557 | else |
| 6558 | return readOperator(); |
| 6559 | } |
| 6560 | else if (isOperatorChar.test(ch)) |
| 6561 | return readOperator(); |
| 6562 | else |
| 6563 | return readWord(); |
| 6564 | } |
| 6565 | |
| 6566 | // The external interface to the tokenizer. |
| 6567 | return function(source, startState) { |
| 6568 | return tokenizer(source, startState || javaTokenState(false, true)); |
| 6569 | }; |
| 6570 | })(); |