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12cda45a S |
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"); | |
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 (!ie_lt9 && (ie ? !e.buttons : !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, state; | |
2755 | if (how == null) how = "add"; | |
2756 | if (how == "smart") { | |
2757 | if (!cm.doc.mode.indent) how = "prev"; | |
2758 | else 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 | if (line.stateAfter) line.stateAfter = null; | |
2764 | var curSpaceString = line.text.match(/^\s*/)[0], indentation; | |
2765 | if (!aggressive && !/\S/.test(line.text)) { | |
2766 | indentation = 0; | |
2767 | how = "not"; | |
2768 | } else if (how == "smart") { | |
2769 | indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); | |
2770 | if (indentation == Pass) { | |
2771 | if (!aggressive) return; | |
2772 | how = "prev"; | |
2773 | } | |
2774 | } | |
2775 | if (how == "prev") { | |
2776 | if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); | |
2777 | else indentation = 0; | |
2778 | } else if (how == "add") { | |
2779 | indentation = curSpace + cm.options.indentUnit; | |
2780 | } else if (how == "subtract") { | |
2781 | indentation = curSpace - cm.options.indentUnit; | |
2782 | } else if (typeof how == "number") { | |
2783 | indentation = curSpace + how; | |
2784 | } | |
2785 | indentation = Math.max(0, indentation); | |
2786 | ||
2787 | var indentString = "", pos = 0; | |
2788 | if (cm.options.indentWithTabs) | |
2789 | for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} | |
2790 | if (pos < indentation) indentString += spaceStr(indentation - pos); | |
2791 | ||
2792 | if (indentString != curSpaceString) | |
2793 | replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); | |
2794 | else if (doc.sel.head.line == n && doc.sel.head.ch < curSpaceString.length) | |
2795 | setSelection(doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length), 1); | |
2796 | line.stateAfter = null; | |
2797 | } | |
2798 | ||
2799 | function changeLine(cm, handle, op) { | |
2800 | var no = handle, line = handle, doc = cm.doc; | |
2801 | if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); | |
2802 | else no = lineNo(handle); | |
2803 | if (no == null) return null; | |
2804 | if (op(line, no)) regChange(cm, no, no + 1); | |
2805 | else return null; | |
2806 | return line; | |
2807 | } | |
2808 | ||
2809 | function findPosH(doc, pos, dir, unit, visually) { | |
2810 | var line = pos.line, ch = pos.ch, origDir = dir; | |
2811 | var lineObj = getLine(doc, line); | |
2812 | var possible = true; | |
2813 | function findNextLine() { | |
2814 | var l = line + dir; | |
2815 | if (l < doc.first || l >= doc.first + doc.size) return (possible = false); | |
2816 | line = l; | |
2817 | return lineObj = getLine(doc, l); | |
2818 | } | |
2819 | function moveOnce(boundToLine) { | |
2820 | var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); | |
2821 | if (next == null) { | |
2822 | if (!boundToLine && findNextLine()) { | |
2823 | if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); | |
2824 | else ch = dir < 0 ? lineObj.text.length : 0; | |
2825 | } else return (possible = false); | |
2826 | } else ch = next; | |
2827 | return true; | |
2828 | } | |
2829 | ||
2830 | if (unit == "char") moveOnce(); | |
2831 | else if (unit == "column") moveOnce(true); | |
2832 | else if (unit == "word" || unit == "group") { | |
2833 | var sawType = null, group = unit == "group"; | |
2834 | for (var first = true;; first = false) { | |
2835 | if (dir < 0 && !moveOnce(!first)) break; | |
2836 | var cur = lineObj.text.charAt(ch) || "\n"; | |
2837 | var type = isWordChar(cur) ? "w" | |
2838 | : !group ? null | |
2839 | : /\s/.test(cur) ? null | |
2840 | : "p"; | |
2841 | if (sawType && sawType != type) { | |
2842 | if (dir < 0) {dir = 1; moveOnce();} | |
2843 | break; | |
2844 | } | |
2845 | if (type) sawType = type; | |
2846 | if (dir > 0 && !moveOnce(!first)) break; | |
2847 | } | |
2848 | } | |
2849 | var result = skipAtomic(doc, Pos(line, ch), origDir, true); | |
2850 | if (!possible) result.hitSide = true; | |
2851 | return result; | |
2852 | } | |
2853 | ||
2854 | function findPosV(cm, pos, dir, unit) { | |
2855 | var doc = cm.doc, x = pos.left, y; | |
2856 | if (unit == "page") { | |
2857 | var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); | |
2858 | y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); | |
2859 | } else if (unit == "line") { | |
2860 | y = dir > 0 ? pos.bottom + 3 : pos.top - 3; | |
2861 | } | |
2862 | for (;;) { | |
2863 | var target = coordsChar(cm, x, y); | |
2864 | if (!target.outside) break; | |
2865 | if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } | |
2866 | y += dir * 5; | |
2867 | } | |
2868 | return target; | |
2869 | } | |
2870 | ||
2871 | function findWordAt(line, pos) { | |
2872 | var start = pos.ch, end = pos.ch; | |
2873 | if (line) { | |
2874 | if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; | |
2875 | var startChar = line.charAt(start); | |
2876 | var check = isWordChar(startChar) ? isWordChar | |
2877 | : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} | |
2878 | : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; | |
2879 | while (start > 0 && check(line.charAt(start - 1))) --start; | |
2880 | while (end < line.length && check(line.charAt(end))) ++end; | |
2881 | } | |
2882 | return {from: Pos(pos.line, start), to: Pos(pos.line, end)}; | |
2883 | } | |
2884 | ||
2885 | function selectLine(cm, line) { | |
2886 | extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); | |
2887 | } | |
2888 | ||
2889 | // PROTOTYPE | |
2890 | ||
2891 | // The publicly visible API. Note that operation(null, f) means | |
2892 | // 'wrap f in an operation, performed on its `this` parameter' | |
2893 | ||
2894 | CodeMirror.prototype = { | |
2895 | constructor: CodeMirror, | |
2896 | focus: function(){window.focus(); focusInput(this); fastPoll(this);}, | |
2897 | ||
2898 | setOption: function(option, value) { | |
2899 | var options = this.options, old = options[option]; | |
2900 | if (options[option] == value && option != "mode") return; | |
2901 | options[option] = value; | |
2902 | if (optionHandlers.hasOwnProperty(option)) | |
2903 | operation(this, optionHandlers[option])(this, value, old); | |
2904 | }, | |
2905 | ||
2906 | getOption: function(option) {return this.options[option];}, | |
2907 | getDoc: function() {return this.doc;}, | |
2908 | ||
2909 | addKeyMap: function(map, bottom) { | |
2910 | this.state.keyMaps[bottom ? "push" : "unshift"](map); | |
2911 | }, | |
2912 | removeKeyMap: function(map) { | |
2913 | var maps = this.state.keyMaps; | |
2914 | for (var i = 0; i < maps.length; ++i) | |
2915 | if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) { | |
2916 | maps.splice(i, 1); | |
2917 | return true; | |
2918 | } | |
2919 | }, | |
2920 | ||
2921 | addOverlay: operation(null, function(spec, options) { | |
2922 | var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); | |
2923 | if (mode.startState) throw new Error("Overlays may not be stateful."); | |
2924 | this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); | |
2925 | this.state.modeGen++; | |
2926 | regChange(this); | |
2927 | }), | |
2928 | removeOverlay: operation(null, function(spec) { | |
2929 | var overlays = this.state.overlays; | |
2930 | for (var i = 0; i < overlays.length; ++i) { | |
2931 | var cur = overlays[i].modeSpec; | |
2932 | if (cur == spec || typeof spec == "string" && cur.name == spec) { | |
2933 | overlays.splice(i, 1); | |
2934 | this.state.modeGen++; | |
2935 | regChange(this); | |
2936 | return; | |
2937 | } | |
2938 | } | |
2939 | }), | |
2940 | ||
2941 | indentLine: operation(null, function(n, dir, aggressive) { | |
2942 | if (typeof dir != "string" && typeof dir != "number") { | |
2943 | if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; | |
2944 | else dir = dir ? "add" : "subtract"; | |
2945 | } | |
2946 | if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); | |
2947 | }), | |
2948 | indentSelection: operation(null, function(how) { | |
2949 | var sel = this.doc.sel; | |
2950 | if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how, true); | |
2951 | var e = sel.to.line - (sel.to.ch ? 0 : 1); | |
2952 | for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); | |
2953 | }), | |
2954 | ||
2955 | // Fetch the parser token for a given character. Useful for hacks | |
2956 | // that want to inspect the mode state (say, for completion). | |
2957 | getTokenAt: function(pos, precise) { | |
2958 | var doc = this.doc; | |
2959 | pos = clipPos(doc, pos); | |
2960 | var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode; | |
2961 | var line = getLine(doc, pos.line); | |
2962 | var stream = new StringStream(line.text, this.options.tabSize); | |
2963 | while (stream.pos < pos.ch && !stream.eol()) { | |
2964 | stream.start = stream.pos; | |
2965 | var style = mode.token(stream, state); | |
2966 | } | |
2967 | return {start: stream.start, | |
2968 | end: stream.pos, | |
2969 | string: stream.current(), | |
2970 | className: style || null, // Deprecated, use 'type' instead | |
2971 | type: style || null, | |
2972 | state: state}; | |
2973 | }, | |
2974 | ||
2975 | getTokenTypeAt: function(pos) { | |
2976 | pos = clipPos(this.doc, pos); | |
2977 | var styles = getLineStyles(this, getLine(this.doc, pos.line)); | |
2978 | var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; | |
2979 | if (ch == 0) return styles[2]; | |
2980 | for (;;) { | |
2981 | var mid = (before + after) >> 1; | |
2982 | if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; | |
2983 | else if (styles[mid * 2 + 1] < ch) before = mid + 1; | |
2984 | else return styles[mid * 2 + 2]; | |
2985 | } | |
2986 | }, | |
2987 | ||
2988 | getModeAt: function(pos) { | |
2989 | var mode = this.doc.mode; | |
2990 | if (!mode.innerMode) return mode; | |
2991 | return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; | |
2992 | }, | |
2993 | ||
2994 | getHelper: function(pos, type) { | |
2995 | return this.getHelpers(pos, type)[0]; | |
2996 | }, | |
2997 | ||
2998 | getHelpers: function(pos, type) { | |
2999 | var found = []; | |
3000 | if (!helpers.hasOwnProperty(type)) return helpers; | |
3001 | var help = helpers[type], mode = this.getModeAt(pos); | |
3002 | if (typeof mode[type] == "string") { | |
3003 | if (help[mode[type]]) found.push(help[mode[type]]); | |
3004 | } else if (mode[type]) { | |
3005 | for (var i = 0; i < mode[type].length; i++) { | |
3006 | var val = help[mode[type][i]]; | |
3007 | if (val) found.push(val); | |
3008 | } | |
3009 | } else if (mode.helperType && help[mode.helperType]) { | |
3010 | found.push(help[mode.helperType]); | |
3011 | } else if (help[mode.name]) { | |
3012 | found.push(help[mode.name]); | |
3013 | } | |
3014 | for (var i = 0; i < help._global.length; i++) { | |
3015 | var cur = help._global[i]; | |
3016 | if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) | |
3017 | found.push(cur.val); | |
3018 | } | |
3019 | return found; | |
3020 | }, | |
3021 | ||
3022 | getStateAfter: function(line, precise) { | |
3023 | var doc = this.doc; | |
3024 | line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); | |
3025 | return getStateBefore(this, line + 1, precise); | |
3026 | }, | |
3027 | ||
3028 | cursorCoords: function(start, mode) { | |
3029 | var pos, sel = this.doc.sel; | |
3030 | if (start == null) pos = sel.head; | |
3031 | else if (typeof start == "object") pos = clipPos(this.doc, start); | |
3032 | else pos = start ? sel.from : sel.to; | |
3033 | return cursorCoords(this, pos, mode || "page"); | |
3034 | }, | |
3035 | ||
3036 | charCoords: function(pos, mode) { | |
3037 | return charCoords(this, clipPos(this.doc, pos), mode || "page"); | |
3038 | }, | |
3039 | ||
3040 | coordsChar: function(coords, mode) { | |
3041 | coords = fromCoordSystem(this, coords, mode || "page"); | |
3042 | return coordsChar(this, coords.left, coords.top); | |
3043 | }, | |
3044 | ||
3045 | lineAtHeight: function(height, mode) { | |
3046 | height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; | |
3047 | return lineAtHeight(this.doc, height + this.display.viewOffset); | |
3048 | }, | |
3049 | heightAtLine: function(line, mode) { | |
3050 | var end = false, last = this.doc.first + this.doc.size - 1; | |
3051 | if (line < this.doc.first) line = this.doc.first; | |
3052 | else if (line > last) { line = last; end = true; } | |
3053 | var lineObj = getLine(this.doc, line); | |
3054 | return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + | |
3055 | (end ? lineObj.height : 0); | |
3056 | }, | |
3057 | ||
3058 | defaultTextHeight: function() { return textHeight(this.display); }, | |
3059 | defaultCharWidth: function() { return charWidth(this.display); }, | |
3060 | ||
3061 | setGutterMarker: operation(null, function(line, gutterID, value) { | |
3062 | return changeLine(this, line, function(line) { | |
3063 | var markers = line.gutterMarkers || (line.gutterMarkers = {}); | |
3064 | markers[gutterID] = value; | |
3065 | if (!value && isEmpty(markers)) line.gutterMarkers = null; | |
3066 | return true; | |
3067 | }); | |
3068 | }), | |
3069 | ||
3070 | clearGutter: operation(null, function(gutterID) { | |
3071 | var cm = this, doc = cm.doc, i = doc.first; | |
3072 | doc.iter(function(line) { | |
3073 | if (line.gutterMarkers && line.gutterMarkers[gutterID]) { | |
3074 | line.gutterMarkers[gutterID] = null; | |
3075 | regChange(cm, i, i + 1); | |
3076 | if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; | |
3077 | } | |
3078 | ++i; | |
3079 | }); | |
3080 | }), | |
3081 | ||
3082 | addLineClass: operation(null, function(handle, where, cls) { | |
3083 | return changeLine(this, handle, function(line) { | |
3084 | var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; | |
3085 | if (!line[prop]) line[prop] = cls; | |
3086 | else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false; | |
3087 | else line[prop] += " " + cls; | |
3088 | return true; | |
3089 | }); | |
3090 | }), | |
3091 | ||
3092 | removeLineClass: operation(null, function(handle, where, cls) { | |
3093 | return changeLine(this, handle, function(line) { | |
3094 | var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; | |
3095 | var cur = line[prop]; | |
3096 | if (!cur) return false; | |
3097 | else if (cls == null) line[prop] = null; | |
3098 | else { | |
3099 | var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); | |
3100 | if (!found) return false; | |
3101 | var end = found.index + found[0].length; | |
3102 | line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; | |
3103 | } | |
3104 | return true; | |
3105 | }); | |
3106 | }), | |
3107 | ||
3108 | addLineWidget: operation(null, function(handle, node, options) { | |
3109 | return addLineWidget(this, handle, node, options); | |
3110 | }), | |
3111 | ||
3112 | removeLineWidget: function(widget) { widget.clear(); }, | |
3113 | ||
3114 | lineInfo: function(line) { | |
3115 | if (typeof line == "number") { | |
3116 | if (!isLine(this.doc, line)) return null; | |
3117 | var n = line; | |
3118 | line = getLine(this.doc, line); | |
3119 | if (!line) return null; | |
3120 | } else { | |
3121 | var n = lineNo(line); | |
3122 | if (n == null) return null; | |
3123 | } | |
3124 | return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, | |
3125 | textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, | |
3126 | widgets: line.widgets}; | |
3127 | }, | |
3128 | ||
3129 | getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};}, | |
3130 | ||
3131 | addWidget: function(pos, node, scroll, vert, horiz) { | |
3132 | var display = this.display; | |
3133 | pos = cursorCoords(this, clipPos(this.doc, pos)); | |
3134 | var top = pos.bottom, left = pos.left; | |
3135 | node.style.position = "absolute"; | |
3136 | display.sizer.appendChild(node); | |
3137 | if (vert == "over") { | |
3138 | top = pos.top; | |
3139 | } else if (vert == "above" || vert == "near") { | |
3140 | var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), | |
3141 | hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); | |
3142 | // Default to positioning above (if specified and possible); otherwise default to positioning below | |
3143 | if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) | |
3144 | top = pos.top - node.offsetHeight; | |
3145 | else if (pos.bottom + node.offsetHeight <= vspace) | |
3146 | top = pos.bottom; | |
3147 | if (left + node.offsetWidth > hspace) | |
3148 | left = hspace - node.offsetWidth; | |
3149 | } | |
3150 | node.style.top = top + "px"; | |
3151 | node.style.left = node.style.right = ""; | |
3152 | if (horiz == "right") { | |
3153 | left = display.sizer.clientWidth - node.offsetWidth; | |
3154 | node.style.right = "0px"; | |
3155 | } else { | |
3156 | if (horiz == "left") left = 0; | |
3157 | else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; | |
3158 | node.style.left = left + "px"; | |
3159 | } | |
3160 | if (scroll) | |
3161 | scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); | |
3162 | }, | |
3163 | ||
3164 | triggerOnKeyDown: operation(null, onKeyDown), | |
3165 | triggerOnKeyPress: operation(null, onKeyPress), | |
3166 | triggerOnKeyUp: operation(null, onKeyUp), | |
3167 | ||
3168 | execCommand: function(cmd) { | |
3169 | if (commands.hasOwnProperty(cmd)) | |
3170 | return commands[cmd](this); | |
3171 | }, | |
3172 | ||
3173 | findPosH: function(from, amount, unit, visually) { | |
3174 | var dir = 1; | |
3175 | if (amount < 0) { dir = -1; amount = -amount; } | |
3176 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | |
3177 | cur = findPosH(this.doc, cur, dir, unit, visually); | |
3178 | if (cur.hitSide) break; | |
3179 | } | |
3180 | return cur; | |
3181 | }, | |
3182 | ||
3183 | moveH: operation(null, function(dir, unit) { | |
3184 | var sel = this.doc.sel, pos; | |
3185 | if (sel.shift || sel.extend || posEq(sel.from, sel.to)) | |
3186 | pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); | |
3187 | else | |
3188 | pos = dir < 0 ? sel.from : sel.to; | |
3189 | extendSelection(this.doc, pos, pos, dir); | |
3190 | }), | |
3191 | ||
3192 | deleteH: operation(null, function(dir, unit) { | |
3193 | var sel = this.doc.sel; | |
3194 | if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); | |
3195 | else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); | |
3196 | this.curOp.userSelChange = true; | |
3197 | }), | |
3198 | ||
3199 | findPosV: function(from, amount, unit, goalColumn) { | |
3200 | var dir = 1, x = goalColumn; | |
3201 | if (amount < 0) { dir = -1; amount = -amount; } | |
3202 | for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | |
3203 | var coords = cursorCoords(this, cur, "div"); | |
3204 | if (x == null) x = coords.left; | |
3205 | else coords.left = x; | |
3206 | cur = findPosV(this, coords, dir, unit); | |
3207 | if (cur.hitSide) break; | |
3208 | } | |
3209 | return cur; | |
3210 | }, | |
3211 | ||
3212 | moveV: operation(null, function(dir, unit) { | |
3213 | var sel = this.doc.sel, target, goal; | |
3214 | if (sel.shift || sel.extend || posEq(sel.from, sel.to)) { | |
3215 | var pos = cursorCoords(this, sel.head, "div"); | |
3216 | if (sel.goalColumn != null) pos.left = sel.goalColumn; | |
3217 | target = findPosV(this, pos, dir, unit); | |
3218 | if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); | |
3219 | goal = pos.left; | |
3220 | } else { | |
3221 | target = dir < 0 ? sel.from : sel.to; | |
3222 | } | |
3223 | extendSelection(this.doc, target, target, dir); | |
3224 | if (goal != null) sel.goalColumn = goal; | |
3225 | }), | |
3226 | ||
3227 | toggleOverwrite: function(value) { | |
3228 | if (value != null && value == this.state.overwrite) return; | |
3229 | if (this.state.overwrite = !this.state.overwrite) | |
3230 | this.display.cursor.className += " CodeMirror-overwrite"; | |
3231 | else | |
3232 | this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); | |
3233 | ||
3234 | signal(this, "overwriteToggle", this, this.state.overwrite); | |
3235 | }, | |
3236 | hasFocus: function() { return document.activeElement == this.display.input; }, | |
3237 | ||
3238 | scrollTo: operation(null, function(x, y) { | |
3239 | updateScrollPos(this, x, y); | |
3240 | }), | |
3241 | getScrollInfo: function() { | |
3242 | var scroller = this.display.scroller, co = scrollerCutOff; | |
3243 | return {left: scroller.scrollLeft, top: scroller.scrollTop, | |
3244 | height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, | |
3245 | clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; | |
3246 | }, | |
3247 | ||
3248 | scrollIntoView: operation(null, function(range, margin) { | |
3249 | if (range == null) range = {from: this.doc.sel.head, to: null}; | |
3250 | else if (typeof range == "number") range = {from: Pos(range, 0), to: null}; | |
3251 | else if (range.from == null) range = {from: range, to: null}; | |
3252 | if (!range.to) range.to = range.from; | |
3253 | if (!margin) margin = 0; | |
3254 | ||
3255 | var coords = range; | |
3256 | if (range.from.line != null) { | |
3257 | this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin}; | |
3258 | coords = {from: cursorCoords(this, range.from), | |
3259 | to: cursorCoords(this, range.to)}; | |
3260 | } | |
3261 | var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left), | |
3262 | Math.min(coords.from.top, coords.to.top) - margin, | |
3263 | Math.max(coords.from.right, coords.to.right), | |
3264 | Math.max(coords.from.bottom, coords.to.bottom) + margin); | |
3265 | updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); | |
3266 | }), | |
3267 | ||
3268 | setSize: operation(null, function(width, height) { | |
3269 | function interpret(val) { | |
3270 | return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; | |
3271 | } | |
3272 | if (width != null) this.display.wrapper.style.width = interpret(width); | |
3273 | if (height != null) this.display.wrapper.style.height = interpret(height); | |
3274 | if (this.options.lineWrapping) | |
3275 | this.display.measureLineCache.length = this.display.measureLineCachePos = 0; | |
3276 | this.curOp.forceUpdate = true; | |
3277 | signal(this, "refresh", this); | |
3278 | }), | |
3279 | ||
3280 | operation: function(f){return runInOp(this, f);}, | |
3281 | ||
3282 | refresh: operation(null, function() { | |
3283 | var oldHeight = this.display.cachedTextHeight; | |
3284 | clearCaches(this); | |
3285 | updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); | |
3286 | regChange(this); | |
3287 | if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) | |
3288 | estimateLineHeights(this); | |
3289 | signal(this, "refresh", this); | |
3290 | }), | |
3291 | ||
3292 | swapDoc: operation(null, function(doc) { | |
3293 | var old = this.doc; | |
3294 | old.cm = null; | |
3295 | attachDoc(this, doc); | |
3296 | clearCaches(this); | |
3297 | resetInput(this, true); | |
3298 | updateScrollPos(this, doc.scrollLeft, doc.scrollTop); | |
3299 | signalLater(this, "swapDoc", this, old); | |
3300 | return old; | |
3301 | }), | |
3302 | ||
3303 | getInputField: function(){return this.display.input;}, | |
3304 | getWrapperElement: function(){return this.display.wrapper;}, | |
3305 | getScrollerElement: function(){return this.display.scroller;}, | |
3306 | getGutterElement: function(){return this.display.gutters;} | |
3307 | }; | |
3308 | eventMixin(CodeMirror); | |
3309 | ||
3310 | // OPTION DEFAULTS | |
3311 | ||
3312 | var optionHandlers = CodeMirror.optionHandlers = {}; | |
3313 | ||
3314 | // The default configuration options. | |
3315 | var defaults = CodeMirror.defaults = {}; | |
3316 | ||
3317 | function option(name, deflt, handle, notOnInit) { | |
3318 | CodeMirror.defaults[name] = deflt; | |
3319 | if (handle) optionHandlers[name] = | |
3320 | notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; | |
3321 | } | |
3322 | ||
3323 | var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; | |
3324 | ||
3325 | // These two are, on init, called from the constructor because they | |
3326 | // have to be initialized before the editor can start at all. | |
3327 | option("value", "", function(cm, val) { | |
3328 | cm.setValue(val); | |
3329 | }, true); | |
3330 | option("mode", null, function(cm, val) { | |
3331 | cm.doc.modeOption = val; | |
3332 | loadMode(cm); | |
3333 | }, true); | |
3334 | ||
3335 | option("indentUnit", 2, loadMode, true); | |
3336 | option("indentWithTabs", false); | |
3337 | option("smartIndent", true); | |
3338 | option("tabSize", 4, function(cm) { | |
3339 | resetModeState(cm); | |
3340 | clearCaches(cm); | |
3341 | regChange(cm); | |
3342 | }, true); | |
3343 | option("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) { | |
3344 | cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); | |
3345 | cm.refresh(); | |
3346 | }, true); | |
3347 | option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); | |
3348 | option("electricChars", true); | |
3349 | option("rtlMoveVisually", !windows); | |
3350 | option("wholeLineUpdateBefore", true); | |
3351 | ||
3352 | option("theme", "default", function(cm) { | |
3353 | themeChanged(cm); | |
3354 | guttersChanged(cm); | |
3355 | }, true); | |
3356 | option("keyMap", "default", keyMapChanged); | |
3357 | option("extraKeys", null); | |
3358 | ||
3359 | option("onKeyEvent", null); | |
3360 | option("onDragEvent", null); | |
3361 | ||
3362 | option("lineWrapping", false, wrappingChanged, true); | |
3363 | option("gutters", [], function(cm) { | |
3364 | setGuttersForLineNumbers(cm.options); | |
3365 | guttersChanged(cm); | |
3366 | }, true); | |
3367 | option("fixedGutter", true, function(cm, val) { | |
3368 | cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; | |
3369 | cm.refresh(); | |
3370 | }, true); | |
3371 | option("coverGutterNextToScrollbar", false, updateScrollbars, true); | |
3372 | option("lineNumbers", false, function(cm) { | |
3373 | setGuttersForLineNumbers(cm.options); | |
3374 | guttersChanged(cm); | |
3375 | }, true); | |
3376 | option("firstLineNumber", 1, guttersChanged, true); | |
3377 | option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); | |
3378 | option("showCursorWhenSelecting", false, updateSelection, true); | |
3379 | ||
3380 | option("resetSelectionOnContextMenu", true); | |
3381 | ||
3382 | option("readOnly", false, function(cm, val) { | |
3383 | if (val == "nocursor") { | |
3384 | onBlur(cm); | |
3385 | cm.display.input.blur(); | |
3386 | cm.display.disabled = true; | |
3387 | } else { | |
3388 | cm.display.disabled = false; | |
3389 | if (!val) resetInput(cm, true); | |
3390 | } | |
3391 | }); | |
3392 | option("disableInput", false, function(cm, val) {if (!val) resetInput(cm, true);}, true); | |
3393 | option("dragDrop", true); | |
3394 | ||
3395 | option("cursorBlinkRate", 530); | |
3396 | option("cursorScrollMargin", 0); | |
3397 | option("cursorHeight", 1); | |
3398 | option("workTime", 100); | |
3399 | option("workDelay", 100); | |
3400 | option("flattenSpans", true, resetModeState, true); | |
3401 | option("addModeClass", false, resetModeState, true); | |
3402 | option("pollInterval", 100); | |
3403 | option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); | |
3404 | option("historyEventDelay", 500); | |
3405 | option("viewportMargin", 10, function(cm){cm.refresh();}, true); | |
3406 | option("maxHighlightLength", 10000, resetModeState, true); | |
3407 | option("crudeMeasuringFrom", 10000); | |
3408 | option("moveInputWithCursor", true, function(cm, val) { | |
3409 | if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; | |
3410 | }); | |
3411 | ||
3412 | option("tabindex", null, function(cm, val) { | |
3413 | cm.display.input.tabIndex = val || ""; | |
3414 | }); | |
3415 | option("autofocus", null); | |
3416 | ||
3417 | // MODE DEFINITION AND QUERYING | |
3418 | ||
3419 | // Known modes, by name and by MIME | |
3420 | var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; | |
3421 | ||
3422 | CodeMirror.defineMode = function(name, mode) { | |
3423 | if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; | |
3424 | if (arguments.length > 2) { | |
3425 | mode.dependencies = []; | |
3426 | for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); | |
3427 | } | |
3428 | modes[name] = mode; | |
3429 | }; | |
3430 | ||
3431 | CodeMirror.defineMIME = function(mime, spec) { | |
3432 | mimeModes[mime] = spec; | |
3433 | }; | |
3434 | ||
3435 | CodeMirror.resolveMode = function(spec) { | |
3436 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { | |
3437 | spec = mimeModes[spec]; | |
3438 | } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { | |
3439 | var found = mimeModes[spec.name]; | |
3440 | spec = createObj(found, spec); | |
3441 | spec.name = found.name; | |
3442 | } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { | |
3443 | return CodeMirror.resolveMode("application/xml"); | |
3444 | } | |
3445 | if (typeof spec == "string") return {name: spec}; | |
3446 | else return spec || {name: "null"}; | |
3447 | }; | |
3448 | ||
3449 | CodeMirror.getMode = function(options, spec) { | |
3450 | var spec = CodeMirror.resolveMode(spec); | |
3451 | var mfactory = modes[spec.name]; | |
3452 | if (!mfactory) return CodeMirror.getMode(options, "text/plain"); | |
3453 | var modeObj = mfactory(options, spec); | |
3454 | if (modeExtensions.hasOwnProperty(spec.name)) { | |
3455 | var exts = modeExtensions[spec.name]; | |
3456 | for (var prop in exts) { | |
3457 | if (!exts.hasOwnProperty(prop)) continue; | |
3458 | if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; | |
3459 | modeObj[prop] = exts[prop]; | |
3460 | } | |
3461 | } | |
3462 | modeObj.name = spec.name; | |
3463 | if (spec.helperType) modeObj.helperType = spec.helperType; | |
3464 | if (spec.modeProps) for (var prop in spec.modeProps) | |
3465 | modeObj[prop] = spec.modeProps[prop]; | |
3466 | ||
3467 | return modeObj; | |
3468 | }; | |
3469 | ||
3470 | CodeMirror.defineMode("null", function() { | |
3471 | return {token: function(stream) {stream.skipToEnd();}}; | |
3472 | }); | |
3473 | CodeMirror.defineMIME("text/plain", "null"); | |
3474 | ||
3475 | var modeExtensions = CodeMirror.modeExtensions = {}; | |
3476 | CodeMirror.extendMode = function(mode, properties) { | |
3477 | var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); | |
3478 | copyObj(properties, exts); | |
3479 | }; | |
3480 | ||
3481 | // EXTENSIONS | |
3482 | ||
3483 | CodeMirror.defineExtension = function(name, func) { | |
3484 | CodeMirror.prototype[name] = func; | |
3485 | }; | |
3486 | CodeMirror.defineDocExtension = function(name, func) { | |
3487 | Doc.prototype[name] = func; | |
3488 | }; | |
3489 | CodeMirror.defineOption = option; | |
3490 | ||
3491 | var initHooks = []; | |
3492 | CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; | |
3493 | ||
3494 | var helpers = CodeMirror.helpers = {}; | |
3495 | CodeMirror.registerHelper = function(type, name, value) { | |
3496 | if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}; | |
3497 | helpers[type][name] = value; | |
3498 | }; | |
3499 | CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { | |
3500 | CodeMirror.registerHelper(type, name, value); | |
3501 | helpers[type]._global.push({pred: predicate, val: value}); | |
3502 | }; | |
3503 | ||
3504 | // UTILITIES | |
3505 | ||
3506 | CodeMirror.isWordChar = isWordChar; | |
3507 | ||
3508 | // MODE STATE HANDLING | |
3509 | ||
3510 | // Utility functions for working with state. Exported because modes | |
3511 | // sometimes need to do this. | |
3512 | function copyState(mode, state) { | |
3513 | if (state === true) return state; | |
3514 | if (mode.copyState) return mode.copyState(state); | |
3515 | var nstate = {}; | |
3516 | for (var n in state) { | |
3517 | var val = state[n]; | |
3518 | if (val instanceof Array) val = val.concat([]); | |
3519 | nstate[n] = val; | |
3520 | } | |
3521 | return nstate; | |
3522 | } | |
3523 | CodeMirror.copyState = copyState; | |
3524 | ||
3525 | function startState(mode, a1, a2) { | |
3526 | return mode.startState ? mode.startState(a1, a2) : true; | |
3527 | } | |
3528 | CodeMirror.startState = startState; | |
3529 | ||
3530 | CodeMirror.innerMode = function(mode, state) { | |
3531 | while (mode.innerMode) { | |
3532 | var info = mode.innerMode(state); | |
3533 | if (!info || info.mode == mode) break; | |
3534 | state = info.state; | |
3535 | mode = info.mode; | |
3536 | } | |
3537 | return info || {mode: mode, state: state}; | |
3538 | }; | |
3539 | ||
3540 | // STANDARD COMMANDS | |
3541 | ||
3542 | var commands = CodeMirror.commands = { | |
3543 | selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));}, | |
3544 | killLine: function(cm) { | |
3545 | var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); | |
3546 | if (!sel && cm.getLine(from.line).length == from.ch) | |
3547 | cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); | |
3548 | else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); | |
3549 | }, | |
3550 | deleteLine: function(cm) { | |
3551 | var l = cm.getCursor().line; | |
3552 | cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); | |
3553 | }, | |
3554 | delLineLeft: function(cm) { | |
3555 | var cur = cm.getCursor(); | |
3556 | cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); | |
3557 | }, | |
3558 | undo: function(cm) {cm.undo();}, | |
3559 | redo: function(cm) {cm.redo();}, | |
3560 | goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, | |
3561 | goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, | |
3562 | goLineStart: function(cm) { | |
3563 | cm.extendSelection(lineStart(cm, cm.getCursor().line)); | |
3564 | }, | |
3565 | goLineStartSmart: function(cm) { | |
3566 | var cur = cm.getCursor(), start = lineStart(cm, cur.line); | |
3567 | var line = cm.getLineHandle(start.line); | |
3568 | var order = getOrder(line); | |
3569 | if (!order || order[0].level == 0) { | |
3570 | var firstNonWS = Math.max(0, line.text.search(/\S/)); | |
3571 | var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; | |
3572 | cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); | |
3573 | } else cm.extendSelection(start); | |
3574 | }, | |
3575 | goLineEnd: function(cm) { | |
3576 | cm.extendSelection(lineEnd(cm, cm.getCursor().line)); | |
3577 | }, | |
3578 | goLineRight: function(cm) { | |
3579 | var top = cm.charCoords(cm.getCursor(), "div").top + 5; | |
3580 | cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); | |
3581 | }, | |
3582 | goLineLeft: function(cm) { | |
3583 | var top = cm.charCoords(cm.getCursor(), "div").top + 5; | |
3584 | cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); | |
3585 | }, | |
3586 | goLineUp: function(cm) {cm.moveV(-1, "line");}, | |
3587 | goLineDown: function(cm) {cm.moveV(1, "line");}, | |
3588 | goPageUp: function(cm) {cm.moveV(-1, "page");}, | |
3589 | goPageDown: function(cm) {cm.moveV(1, "page");}, | |
3590 | goCharLeft: function(cm) {cm.moveH(-1, "char");}, | |
3591 | goCharRight: function(cm) {cm.moveH(1, "char");}, | |
3592 | goColumnLeft: function(cm) {cm.moveH(-1, "column");}, | |
3593 | goColumnRight: function(cm) {cm.moveH(1, "column");}, | |
3594 | goWordLeft: function(cm) {cm.moveH(-1, "word");}, | |
3595 | goGroupRight: function(cm) {cm.moveH(1, "group");}, | |
3596 | goGroupLeft: function(cm) {cm.moveH(-1, "group");}, | |
3597 | goWordRight: function(cm) {cm.moveH(1, "word");}, | |
3598 | delCharBefore: function(cm) {cm.deleteH(-1, "char");}, | |
3599 | delCharAfter: function(cm) {cm.deleteH(1, "char");}, | |
3600 | delWordBefore: function(cm) {cm.deleteH(-1, "word");}, | |
3601 | delWordAfter: function(cm) {cm.deleteH(1, "word");}, | |
3602 | delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, | |
3603 | delGroupAfter: function(cm) {cm.deleteH(1, "group");}, | |
3604 | indentAuto: function(cm) {cm.indentSelection("smart");}, | |
3605 | indentMore: function(cm) {cm.indentSelection("add");}, | |
3606 | indentLess: function(cm) {cm.indentSelection("subtract");}, | |
3607 | insertTab: function(cm) { | |
3608 | cm.replaceSelection("\t", "end", "+input"); | |
3609 | }, | |
3610 | defaultTab: function(cm) { | |
3611 | if (cm.somethingSelected()) cm.indentSelection("add"); | |
3612 | else cm.replaceSelection("\t", "end", "+input"); | |
3613 | }, | |
3614 | transposeChars: function(cm) { | |
3615 | var cur = cm.getCursor(), line = cm.getLine(cur.line); | |
3616 | if (cur.ch > 0 && cur.ch < line.length - 1) | |
3617 | cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), | |
3618 | Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); | |
3619 | }, | |
3620 | newlineAndIndent: function(cm) { | |
3621 | operation(cm, function() { | |
3622 | cm.replaceSelection("\n", "end", "+input"); | |
3623 | cm.indentLine(cm.getCursor().line, null, true); | |
3624 | })(); | |
3625 | }, | |
3626 | toggleOverwrite: function(cm) {cm.toggleOverwrite();} | |
3627 | }; | |
3628 | ||
3629 | // STANDARD KEYMAPS | |
3630 | ||
3631 | var keyMap = CodeMirror.keyMap = {}; | |
3632 | keyMap.basic = { | |
3633 | "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", | |
3634 | "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", | |
3635 | "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", | |
3636 | "Tab": "defaultTab", "Shift-Tab": "indentAuto", | |
3637 | "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" | |
3638 | }; | |
3639 | // Note that the save and find-related commands aren't defined by | |
3640 | // default. Unknown commands are simply ignored. | |
3641 | keyMap.pcDefault = { | |
3642 | "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", | |
3643 | "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", | |
3644 | "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", | |
3645 | "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", | |
3646 | "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", | |
3647 | "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", | |
3648 | fallthrough: "basic" | |
3649 | }; | |
3650 | keyMap.macDefault = { | |
3651 | "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", | |
3652 | "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", | |
3653 | "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore", | |
3654 | "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", | |
3655 | "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", | |
3656 | "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", | |
3657 | fallthrough: ["basic", "emacsy"] | |
3658 | }; | |
3659 | keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; | |
3660 | keyMap.emacsy = { | |
3661 | "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", | |
3662 | "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", | |
3663 | "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", | |
3664 | "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" | |
3665 | }; | |
3666 | ||
3667 | // KEYMAP DISPATCH | |
3668 | ||
3669 | function getKeyMap(val) { | |
3670 | if (typeof val == "string") return keyMap[val]; | |
3671 | else return val; | |
3672 | } | |
3673 | ||
3674 | function lookupKey(name, maps, handle) { | |
3675 | function lookup(map) { | |
3676 | map = getKeyMap(map); | |
3677 | var found = map[name]; | |
3678 | if (found === false) return "stop"; | |
3679 | if (found != null && handle(found)) return true; | |
3680 | if (map.nofallthrough) return "stop"; | |
3681 | ||
3682 | var fallthrough = map.fallthrough; | |
3683 | if (fallthrough == null) return false; | |
3684 | if (Object.prototype.toString.call(fallthrough) != "[object Array]") | |
3685 | return lookup(fallthrough); | |
3686 | for (var i = 0, e = fallthrough.length; i < e; ++i) { | |
3687 | var done = lookup(fallthrough[i]); | |
3688 | if (done) return done; | |
3689 | } | |
3690 | return false; | |
3691 | } | |
3692 | ||
3693 | for (var i = 0; i < maps.length; ++i) { | |
3694 | var done = lookup(maps[i]); | |
3695 | if (done) return done != "stop"; | |
3696 | } | |
3697 | } | |
3698 | function isModifierKey(event) { | |
3699 | var name = keyNames[event.keyCode]; | |
3700 | return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; | |
3701 | } | |
3702 | function keyName(event, noShift) { | |
3703 | if (opera && event.keyCode == 34 && event["char"]) return false; | |
3704 | var name = keyNames[event.keyCode]; | |
3705 | if (name == null || event.altGraphKey) return false; | |
3706 | if (event.altKey) name = "Alt-" + name; | |
3707 | if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; | |
3708 | if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; | |
3709 | if (!noShift && event.shiftKey) name = "Shift-" + name; | |
3710 | return name; | |
3711 | } | |
3712 | CodeMirror.lookupKey = lookupKey; | |
3713 | CodeMirror.isModifierKey = isModifierKey; | |
3714 | CodeMirror.keyName = keyName; | |
3715 | ||
3716 | // FROMTEXTAREA | |
3717 | ||
3718 | CodeMirror.fromTextArea = function(textarea, options) { | |
3719 | if (!options) options = {}; | |
3720 | options.value = textarea.value; | |
3721 | if (!options.tabindex && textarea.tabindex) | |
3722 | options.tabindex = textarea.tabindex; | |
3723 | if (!options.placeholder && textarea.placeholder) | |
3724 | options.placeholder = textarea.placeholder; | |
3725 | // Set autofocus to true if this textarea is focused, or if it has | |
3726 | // autofocus and no other element is focused. | |
3727 | if (options.autofocus == null) { | |
3728 | var hasFocus = document.body; | |
3729 | // doc.activeElement occasionally throws on IE | |
3730 | try { hasFocus = document.activeElement; } catch(e) {} | |
3731 | options.autofocus = hasFocus == textarea || | |
3732 | textarea.getAttribute("autofocus") != null && hasFocus == document.body; | |
3733 | } | |
3734 | ||
3735 | function save() {textarea.value = cm.getValue();} | |
3736 | if (textarea.form) { | |
3737 | on(textarea.form, "submit", save); | |
3738 | // Deplorable hack to make the submit method do the right thing. | |
3739 | if (!options.leaveSubmitMethodAlone) { | |
3740 | var form = textarea.form, realSubmit = form.submit; | |
3741 | try { | |
3742 | var wrappedSubmit = form.submit = function() { | |
3743 | save(); | |
3744 | form.submit = realSubmit; | |
3745 | form.submit(); | |
3746 | form.submit = wrappedSubmit; | |
3747 | }; | |
3748 | } catch(e) {} | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | textarea.style.display = "none"; | |
3753 | var cm = CodeMirror(function(node) { | |
3754 | textarea.parentNode.insertBefore(node, textarea.nextSibling); | |
3755 | }, options); | |
3756 | cm.save = save; | |
3757 | cm.getTextArea = function() { return textarea; }; | |
3758 | cm.toTextArea = function() { | |
3759 | save(); | |
3760 | textarea.parentNode.removeChild(cm.getWrapperElement()); | |
3761 | textarea.style.display = ""; | |
3762 | if (textarea.form) { | |
3763 | off(textarea.form, "submit", save); | |
3764 | if (typeof textarea.form.submit == "function") | |
3765 | textarea.form.submit = realSubmit; | |
3766 | } | |
3767 | }; | |
3768 | return cm; | |
3769 | }; | |
3770 | ||
3771 | // STRING STREAM | |
3772 | ||
3773 | // Fed to the mode parsers, provides helper functions to make | |
3774 | // parsers more succinct. | |
3775 | ||
3776 | // The character stream used by a mode's parser. | |
3777 | function StringStream(string, tabSize) { | |
3778 | this.pos = this.start = 0; | |
3779 | this.string = string; | |
3780 | this.tabSize = tabSize || 8; | |
3781 | this.lastColumnPos = this.lastColumnValue = 0; | |
3782 | this.lineStart = 0; | |
3783 | } | |
3784 | ||
3785 | StringStream.prototype = { | |
3786 | eol: function() {return this.pos >= this.string.length;}, | |
3787 | sol: function() {return this.pos == this.lineStart;}, | |
3788 | peek: function() {return this.string.charAt(this.pos) || undefined;}, | |
3789 | next: function() { | |
3790 | if (this.pos < this.string.length) | |
3791 | return this.string.charAt(this.pos++); | |
3792 | }, | |
3793 | eat: function(match) { | |
3794 | var ch = this.string.charAt(this.pos); | |
3795 | if (typeof match == "string") var ok = ch == match; | |
3796 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); | |
3797 | if (ok) {++this.pos; return ch;} | |
3798 | }, | |
3799 | eatWhile: function(match) { | |
3800 | var start = this.pos; | |
3801 | while (this.eat(match)){} | |
3802 | return this.pos > start; | |
3803 | }, | |
3804 | eatSpace: function() { | |
3805 | var start = this.pos; | |
3806 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; | |
3807 | return this.pos > start; | |
3808 | }, | |
3809 | skipToEnd: function() {this.pos = this.string.length;}, | |
3810 | skipTo: function(ch) { | |
3811 | var found = this.string.indexOf(ch, this.pos); | |
3812 | if (found > -1) {this.pos = found; return true;} | |
3813 | }, | |
3814 | backUp: function(n) {this.pos -= n;}, | |
3815 | column: function() { | |
3816 | if (this.lastColumnPos < this.start) { | |
3817 | this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); | |
3818 | this.lastColumnPos = this.start; | |
3819 | } | |
3820 | return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | |
3821 | }, | |
3822 | indentation: function() { | |
3823 | return countColumn(this.string, null, this.tabSize) - | |
3824 | (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | |
3825 | }, | |
3826 | match: function(pattern, consume, caseInsensitive) { | |
3827 | if (typeof pattern == "string") { | |
3828 | var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; | |
3829 | var substr = this.string.substr(this.pos, pattern.length); | |
3830 | if (cased(substr) == cased(pattern)) { | |
3831 | if (consume !== false) this.pos += pattern.length; | |
3832 | return true; | |
3833 | } | |
3834 | } else { | |
3835 | var match = this.string.slice(this.pos).match(pattern); | |
3836 | if (match && match.index > 0) return null; | |
3837 | if (match && consume !== false) this.pos += match[0].length; | |
3838 | return match; | |
3839 | } | |
3840 | }, | |
3841 | current: function(){return this.string.slice(this.start, this.pos);}, | |
3842 | hideFirstChars: function(n, inner) { | |
3843 | this.lineStart += n; | |
3844 | try { return inner(); } | |
3845 | finally { this.lineStart -= n; } | |
3846 | } | |
3847 | }; | |
3848 | CodeMirror.StringStream = StringStream; | |
3849 | ||
3850 | // TEXTMARKERS | |
3851 | ||
3852 | function TextMarker(doc, type) { | |
3853 | this.lines = []; | |
3854 | this.type = type; | |
3855 | this.doc = doc; | |
3856 | } | |
3857 | CodeMirror.TextMarker = TextMarker; | |
3858 | eventMixin(TextMarker); | |
3859 | ||
3860 | TextMarker.prototype.clear = function() { | |
3861 | if (this.explicitlyCleared) return; | |
3862 | var cm = this.doc.cm, withOp = cm && !cm.curOp; | |
3863 | if (withOp) startOperation(cm); | |
3864 | if (hasHandler(this, "clear")) { | |
3865 | var found = this.find(); | |
3866 | if (found) signalLater(this, "clear", found.from, found.to); | |
3867 | } | |
3868 | var min = null, max = null; | |
3869 | for (var i = 0; i < this.lines.length; ++i) { | |
3870 | var line = this.lines[i]; | |
3871 | var span = getMarkedSpanFor(line.markedSpans, this); | |
3872 | if (span.to != null) max = lineNo(line); | |
3873 | line.markedSpans = removeMarkedSpan(line.markedSpans, span); | |
3874 | if (span.from != null) | |
3875 | min = lineNo(line); | |
3876 | else if (this.collapsed && !lineIsHidden(this.doc, line) && cm) | |
3877 | updateLineHeight(line, textHeight(cm.display)); | |
3878 | } | |
3879 | if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { | |
3880 | var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); | |
3881 | if (len > cm.display.maxLineLength) { | |
3882 | cm.display.maxLine = visual; | |
3883 | cm.display.maxLineLength = len; | |
3884 | cm.display.maxLineChanged = true; | |
3885 | } | |
3886 | } | |
3887 | ||
3888 | if (min != null && cm) regChange(cm, min, max + 1); | |
3889 | this.lines.length = 0; | |
3890 | this.explicitlyCleared = true; | |
3891 | if (this.atomic && this.doc.cantEdit) { | |
3892 | this.doc.cantEdit = false; | |
3893 | if (cm) reCheckSelection(cm); | |
3894 | } | |
3895 | if (withOp) endOperation(cm); | |
3896 | }; | |
3897 | ||
3898 | TextMarker.prototype.find = function(bothSides) { | |
3899 | var from, to; | |
3900 | for (var i = 0; i < this.lines.length; ++i) { | |
3901 | var line = this.lines[i]; | |
3902 | var span = getMarkedSpanFor(line.markedSpans, this); | |
3903 | if (span.from != null || span.to != null) { | |
3904 | var found = lineNo(line); | |
3905 | if (span.from != null) from = Pos(found, span.from); | |
3906 | if (span.to != null) to = Pos(found, span.to); | |
3907 | } | |
3908 | } | |
3909 | if (this.type == "bookmark" && !bothSides) return from; | |
3910 | return from && {from: from, to: to}; | |
3911 | }; | |
3912 | ||
3913 | TextMarker.prototype.changed = function() { | |
3914 | var pos = this.find(), cm = this.doc.cm; | |
3915 | if (!pos || !cm) return; | |
3916 | if (this.type != "bookmark") pos = pos.from; | |
3917 | var line = getLine(this.doc, pos.line); | |
3918 | clearCachedMeasurement(cm, line); | |
3919 | if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) { | |
3920 | for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { | |
3921 | if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); | |
3922 | break; | |
3923 | } | |
3924 | runInOp(cm, function() { | |
3925 | cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true; | |
3926 | }); | |
3927 | } | |
3928 | }; | |
3929 | ||
3930 | TextMarker.prototype.attachLine = function(line) { | |
3931 | if (!this.lines.length && this.doc.cm) { | |
3932 | var op = this.doc.cm.curOp; | |
3933 | if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) | |
3934 | (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); | |
3935 | } | |
3936 | this.lines.push(line); | |
3937 | }; | |
3938 | TextMarker.prototype.detachLine = function(line) { | |
3939 | this.lines.splice(indexOf(this.lines, line), 1); | |
3940 | if (!this.lines.length && this.doc.cm) { | |
3941 | var op = this.doc.cm.curOp; | |
3942 | (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); | |
3943 | } | |
3944 | }; | |
3945 | ||
3946 | var nextMarkerId = 0; | |
3947 | ||
3948 | function markText(doc, from, to, options, type) { | |
3949 | if (options && options.shared) return markTextShared(doc, from, to, options, type); | |
3950 | if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); | |
3951 | ||
3952 | var marker = new TextMarker(doc, type); | |
3953 | if (options) copyObj(options, marker); | |
3954 | if (posLess(to, from) || posEq(from, to) && marker.clearWhenEmpty !== false) | |
3955 | return marker; | |
3956 | if (marker.replacedWith) { | |
3957 | marker.collapsed = true; | |
3958 | marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); | |
3959 | if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; | |
3960 | } | |
3961 | if (marker.collapsed) { | |
3962 | if (conflictingCollapsedRange(doc, from.line, from, to, marker) || | |
3963 | from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) | |
3964 | throw new Error("Inserting collapsed marker partially overlapping an existing one"); | |
3965 | sawCollapsedSpans = true; | |
3966 | } | |
3967 | ||
3968 | if (marker.addToHistory) | |
3969 | addToHistory(doc, {from: from, to: to, origin: "markText"}, | |
3970 | {head: doc.sel.head, anchor: doc.sel.anchor}, NaN); | |
3971 | ||
3972 | var curLine = from.line, cm = doc.cm, updateMaxLine; | |
3973 | doc.iter(curLine, to.line + 1, function(line) { | |
3974 | if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) | |
3975 | updateMaxLine = true; | |
3976 | var span = {from: null, to: null, marker: marker}; | |
3977 | if (curLine == from.line) span.from = from.ch; | |
3978 | if (curLine == to.line) span.to = to.ch; | |
3979 | if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0); | |
3980 | addMarkedSpan(line, span); | |
3981 | ++curLine; | |
3982 | }); | |
3983 | if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { | |
3984 | if (lineIsHidden(doc, line)) updateLineHeight(line, 0); | |
3985 | }); | |
3986 | ||
3987 | if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); | |
3988 | ||
3989 | if (marker.readOnly) { | |
3990 | sawReadOnlySpans = true; | |
3991 | if (doc.history.done.length || doc.history.undone.length) | |
3992 | doc.clearHistory(); | |
3993 | } | |
3994 | if (marker.collapsed) { | |
3995 | marker.id = ++nextMarkerId; | |
3996 | marker.atomic = true; | |
3997 | } | |
3998 | if (cm) { | |
3999 | if (updateMaxLine) cm.curOp.updateMaxLine = true; | |
4000 | if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed) | |
4001 | regChange(cm, from.line, to.line + 1); | |
4002 | if (marker.atomic) reCheckSelection(cm); | |
4003 | } | |
4004 | return marker; | |
4005 | } | |
4006 | ||
4007 | // SHARED TEXTMARKERS | |
4008 | ||
4009 | function SharedTextMarker(markers, primary) { | |
4010 | this.markers = markers; | |
4011 | this.primary = primary; | |
4012 | for (var i = 0, me = this; i < markers.length; ++i) { | |
4013 | markers[i].parent = this; | |
4014 | on(markers[i], "clear", function(){me.clear();}); | |
4015 | } | |
4016 | } | |
4017 | CodeMirror.SharedTextMarker = SharedTextMarker; | |
4018 | eventMixin(SharedTextMarker); | |
4019 | ||
4020 | SharedTextMarker.prototype.clear = function() { | |
4021 | if (this.explicitlyCleared) return; | |
4022 | this.explicitlyCleared = true; | |
4023 | for (var i = 0; i < this.markers.length; ++i) | |
4024 | this.markers[i].clear(); | |
4025 | signalLater(this, "clear"); | |
4026 | }; | |
4027 | SharedTextMarker.prototype.find = function() { | |
4028 | return this.primary.find(); | |
4029 | }; | |
4030 | ||
4031 | function markTextShared(doc, from, to, options, type) { | |
4032 | options = copyObj(options); | |
4033 | options.shared = false; | |
4034 | var markers = [markText(doc, from, to, options, type)], primary = markers[0]; | |
4035 | var widget = options.replacedWith; | |
4036 | linkedDocs(doc, function(doc) { | |
4037 | if (widget) options.replacedWith = widget.cloneNode(true); | |
4038 | markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); | |
4039 | for (var i = 0; i < doc.linked.length; ++i) | |
4040 | if (doc.linked[i].isParent) return; | |
4041 | primary = lst(markers); | |
4042 | }); | |
4043 | return new SharedTextMarker(markers, primary); | |
4044 | } | |
4045 | ||
4046 | // TEXTMARKER SPANS | |
4047 | ||
4048 | function getMarkedSpanFor(spans, marker) { | |
4049 | if (spans) for (var i = 0; i < spans.length; ++i) { | |
4050 | var span = spans[i]; | |
4051 | if (span.marker == marker) return span; | |
4052 | } | |
4053 | } | |
4054 | function removeMarkedSpan(spans, span) { | |
4055 | for (var r, i = 0; i < spans.length; ++i) | |
4056 | if (spans[i] != span) (r || (r = [])).push(spans[i]); | |
4057 | return r; | |
4058 | } | |
4059 | function addMarkedSpan(line, span) { | |
4060 | line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; | |
4061 | span.marker.attachLine(line); | |
4062 | } | |
4063 | ||
4064 | function markedSpansBefore(old, startCh, isInsert) { | |
4065 | if (old) for (var i = 0, nw; i < old.length; ++i) { | |
4066 | var span = old[i], marker = span.marker; | |
4067 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); | |
4068 | if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { | |
4069 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); | |
4070 | (nw || (nw = [])).push({from: span.from, | |
4071 | to: endsAfter ? null : span.to, | |
4072 | marker: marker}); | |
4073 | } | |
4074 | } | |
4075 | return nw; | |
4076 | } | |
4077 | ||
4078 | function markedSpansAfter(old, endCh, isInsert) { | |
4079 | if (old) for (var i = 0, nw; i < old.length; ++i) { | |
4080 | var span = old[i], marker = span.marker; | |
4081 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); | |
4082 | if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { | |
4083 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); | |
4084 | (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, | |
4085 | to: span.to == null ? null : span.to - endCh, | |
4086 | marker: marker}); | |
4087 | } | |
4088 | } | |
4089 | return nw; | |
4090 | } | |
4091 | ||
4092 | function stretchSpansOverChange(doc, change) { | |
4093 | var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; | |
4094 | var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; | |
4095 | if (!oldFirst && !oldLast) return null; | |
4096 | ||
4097 | var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to); | |
4098 | // Get the spans that 'stick out' on both sides | |
4099 | var first = markedSpansBefore(oldFirst, startCh, isInsert); | |
4100 | var last = markedSpansAfter(oldLast, endCh, isInsert); | |
4101 | ||
4102 | // Next, merge those two ends | |
4103 | var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); | |
4104 | if (first) { | |
4105 | // Fix up .to properties of first | |
4106 | for (var i = 0; i < first.length; ++i) { | |
4107 | var span = first[i]; | |
4108 | if (span.to == null) { | |
4109 | var found = getMarkedSpanFor(last, span.marker); | |
4110 | if (!found) span.to = startCh; | |
4111 | else if (sameLine) span.to = found.to == null ? null : found.to + offset; | |
4112 | } | |
4113 | } | |
4114 | } | |
4115 | if (last) { | |
4116 | // Fix up .from in last (or move them into first in case of sameLine) | |
4117 | for (var i = 0; i < last.length; ++i) { | |
4118 | var span = last[i]; | |
4119 | if (span.to != null) span.to += offset; | |
4120 | if (span.from == null) { | |
4121 | var found = getMarkedSpanFor(first, span.marker); | |
4122 | if (!found) { | |
4123 | span.from = offset; | |
4124 | if (sameLine) (first || (first = [])).push(span); | |
4125 | } | |
4126 | } else { | |
4127 | span.from += offset; | |
4128 | if (sameLine) (first || (first = [])).push(span); | |
4129 | } | |
4130 | } | |
4131 | } | |
4132 | // Make sure we didn't create any zero-length spans | |
4133 | if (first) first = clearEmptySpans(first); | |
4134 | if (last && last != first) last = clearEmptySpans(last); | |
4135 | ||
4136 | var newMarkers = [first]; | |
4137 | if (!sameLine) { | |
4138 | // Fill gap with whole-line-spans | |
4139 | var gap = change.text.length - 2, gapMarkers; | |
4140 | if (gap > 0 && first) | |
4141 | for (var i = 0; i < first.length; ++i) | |
4142 | if (first[i].to == null) | |
4143 | (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); | |
4144 | for (var i = 0; i < gap; ++i) | |
4145 | newMarkers.push(gapMarkers); | |
4146 | newMarkers.push(last); | |
4147 | } | |
4148 | return newMarkers; | |
4149 | } | |
4150 | ||
4151 | function clearEmptySpans(spans) { | |
4152 | for (var i = 0; i < spans.length; ++i) { | |
4153 | var span = spans[i]; | |
4154 | if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) | |
4155 | spans.splice(i--, 1); | |
4156 | } | |
4157 | if (!spans.length) return null; | |
4158 | return spans; | |
4159 | } | |
4160 | ||
4161 | function mergeOldSpans(doc, change) { | |
4162 | var old = getOldSpans(doc, change); | |
4163 | var stretched = stretchSpansOverChange(doc, change); | |
4164 | if (!old) return stretched; | |
4165 | if (!stretched) return old; | |
4166 | ||
4167 | for (var i = 0; i < old.length; ++i) { | |
4168 | var oldCur = old[i], stretchCur = stretched[i]; | |
4169 | if (oldCur && stretchCur) { | |
4170 | spans: for (var j = 0; j < stretchCur.length; ++j) { | |
4171 | var span = stretchCur[j]; | |
4172 | for (var k = 0; k < oldCur.length; ++k) | |
4173 | if (oldCur[k].marker == span.marker) continue spans; | |
4174 | oldCur.push(span); | |
4175 | } | |
4176 | } else if (stretchCur) { | |
4177 | old[i] = stretchCur; | |
4178 | } | |
4179 | } | |
4180 | return old; | |
4181 | } | |
4182 | ||
4183 | function removeReadOnlyRanges(doc, from, to) { | |
4184 | var markers = null; | |
4185 | doc.iter(from.line, to.line + 1, function(line) { | |
4186 | if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { | |
4187 | var mark = line.markedSpans[i].marker; | |
4188 | if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) | |
4189 | (markers || (markers = [])).push(mark); | |
4190 | } | |
4191 | }); | |
4192 | if (!markers) return null; | |
4193 | var parts = [{from: from, to: to}]; | |
4194 | for (var i = 0; i < markers.length; ++i) { | |
4195 | var mk = markers[i], m = mk.find(); | |
4196 | for (var j = 0; j < parts.length; ++j) { | |
4197 | var p = parts[j]; | |
4198 | if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue; | |
4199 | var newParts = [j, 1]; | |
4200 | if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) | |
4201 | newParts.push({from: p.from, to: m.from}); | |
4202 | if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) | |
4203 | newParts.push({from: m.to, to: p.to}); | |
4204 | parts.splice.apply(parts, newParts); | |
4205 | j += newParts.length - 1; | |
4206 | } | |
4207 | } | |
4208 | return parts; | |
4209 | } | |
4210 | ||
4211 | function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; } | |
4212 | function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; } | |
4213 | ||
4214 | function compareCollapsedMarkers(a, b) { | |
4215 | var lenDiff = a.lines.length - b.lines.length; | |
4216 | if (lenDiff != 0) return lenDiff; | |
4217 | var aPos = a.find(), bPos = b.find(); | |
4218 | var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); | |
4219 | if (fromCmp) return -fromCmp; | |
4220 | var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); | |
4221 | if (toCmp) return toCmp; | |
4222 | return b.id - a.id; | |
4223 | } | |
4224 | ||
4225 | function collapsedSpanAtSide(line, start) { | |
4226 | var sps = sawCollapsedSpans && line.markedSpans, found; | |
4227 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { | |
4228 | sp = sps[i]; | |
4229 | if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && | |
4230 | (!found || compareCollapsedMarkers(found, sp.marker) < 0)) | |
4231 | found = sp.marker; | |
4232 | } | |
4233 | return found; | |
4234 | } | |
4235 | function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); } | |
4236 | function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); } | |
4237 | ||
4238 | function conflictingCollapsedRange(doc, lineNo, from, to, marker) { | |
4239 | var line = getLine(doc, lineNo); | |
4240 | var sps = sawCollapsedSpans && line.markedSpans; | |
4241 | if (sps) for (var i = 0; i < sps.length; ++i) { | |
4242 | var sp = sps[i]; | |
4243 | if (!sp.marker.collapsed) continue; | |
4244 | var found = sp.marker.find(true); | |
4245 | var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); | |
4246 | var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); | |
4247 | if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue; | |
4248 | if (fromCmp <= 0 && (cmp(found.to, from) || extraRight(sp.marker) - extraLeft(marker)) > 0 || | |
4249 | fromCmp >= 0 && (cmp(found.from, to) || extraLeft(sp.marker) - extraRight(marker)) < 0) | |
4250 | return true; | |
4251 | } | |
4252 | } | |
4253 | ||
4254 | function visualLine(doc, line) { | |
4255 | var merged; | |
4256 | while (merged = collapsedSpanAtStart(line)) | |
4257 | line = getLine(doc, merged.find().from.line); | |
4258 | return line; | |
4259 | } | |
4260 | ||
4261 | function lineIsHidden(doc, line) { | |
4262 | var sps = sawCollapsedSpans && line.markedSpans; | |
4263 | if (sps) for (var sp, i = 0; i < sps.length; ++i) { | |
4264 | sp = sps[i]; | |
4265 | if (!sp.marker.collapsed) continue; | |
4266 | if (sp.from == null) return true; | |
4267 | if (sp.marker.replacedWith) continue; | |
4268 | if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) | |
4269 | return true; | |
4270 | } | |
4271 | } | |
4272 | function lineIsHiddenInner(doc, line, span) { | |
4273 | if (span.to == null) { | |
4274 | var end = span.marker.find().to, endLine = getLine(doc, end.line); | |
4275 | return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker)); | |
4276 | } | |
4277 | if (span.marker.inclusiveRight && span.to == line.text.length) | |
4278 | return true; | |
4279 | for (var sp, i = 0; i < line.markedSpans.length; ++i) { | |
4280 | sp = line.markedSpans[i]; | |
4281 | if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to && | |
4282 | (sp.to == null || sp.to != span.from) && | |
4283 | (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && | |
4284 | lineIsHiddenInner(doc, line, sp)) return true; | |
4285 | } | |
4286 | } | |
4287 | ||
4288 | function detachMarkedSpans(line) { | |
4289 | var spans = line.markedSpans; | |
4290 | if (!spans) return; | |
4291 | for (var i = 0; i < spans.length; ++i) | |
4292 | spans[i].marker.detachLine(line); | |
4293 | line.markedSpans = null; | |
4294 | } | |
4295 | ||
4296 | function attachMarkedSpans(line, spans) { | |
4297 | if (!spans) return; | |
4298 | for (var i = 0; i < spans.length; ++i) | |
4299 | spans[i].marker.attachLine(line); | |
4300 | line.markedSpans = spans; | |
4301 | } | |
4302 | ||
4303 | // LINE WIDGETS | |
4304 | ||
4305 | var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { | |
4306 | if (options) for (var opt in options) if (options.hasOwnProperty(opt)) | |
4307 | this[opt] = options[opt]; | |
4308 | this.cm = cm; | |
4309 | this.node = node; | |
4310 | }; | |
4311 | eventMixin(LineWidget); | |
4312 | function widgetOperation(f) { | |
4313 | return function() { | |
4314 | var withOp = !this.cm.curOp; | |
4315 | if (withOp) startOperation(this.cm); | |
4316 | try {var result = f.apply(this, arguments);} | |
4317 | finally {if (withOp) endOperation(this.cm);} | |
4318 | return result; | |
4319 | }; | |
4320 | } | |
4321 | LineWidget.prototype.clear = widgetOperation(function() { | |
4322 | var ws = this.line.widgets, no = lineNo(this.line); | |
4323 | if (no == null || !ws) return; | |
4324 | for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); | |
4325 | if (!ws.length) this.line.widgets = null; | |
4326 | var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop; | |
4327 | updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); | |
4328 | if (aboveVisible) addToScrollPos(this.cm, 0, -this.height); | |
4329 | regChange(this.cm, no, no + 1); | |
4330 | }); | |
4331 | LineWidget.prototype.changed = widgetOperation(function() { | |
4332 | var oldH = this.height; | |
4333 | this.height = null; | |
4334 | var diff = widgetHeight(this) - oldH; | |
4335 | if (!diff) return; | |
4336 | updateLineHeight(this.line, this.line.height + diff); | |
4337 | var no = lineNo(this.line); | |
4338 | regChange(this.cm, no, no + 1); | |
4339 | }); | |
4340 | ||
4341 | function widgetHeight(widget) { | |
4342 | if (widget.height != null) return widget.height; | |
4343 | if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) | |
4344 | removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); | |
4345 | return widget.height = widget.node.offsetHeight; | |
4346 | } | |
4347 | ||
4348 | function addLineWidget(cm, handle, node, options) { | |
4349 | var widget = new LineWidget(cm, node, options); | |
4350 | if (widget.noHScroll) cm.display.alignWidgets = true; | |
4351 | changeLine(cm, handle, function(line) { | |
4352 | var widgets = line.widgets || (line.widgets = []); | |
4353 | if (widget.insertAt == null) widgets.push(widget); | |
4354 | else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); | |
4355 | widget.line = line; | |
4356 | if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { | |
4357 | var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop; | |
4358 | updateLineHeight(line, line.height + widgetHeight(widget)); | |
4359 | if (aboveVisible) addToScrollPos(cm, 0, widget.height); | |
4360 | } | |
4361 | return true; | |
4362 | }); | |
4363 | return widget; | |
4364 | } | |
4365 | ||
4366 | // LINE DATA STRUCTURE | |
4367 | ||
4368 | // Line objects. These hold state related to a line, including | |
4369 | // highlighting info (the styles array). | |
4370 | var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { | |
4371 | this.text = text; | |
4372 | attachMarkedSpans(this, markedSpans); | |
4373 | this.height = estimateHeight ? estimateHeight(this) : 1; | |
4374 | }; | |
4375 | eventMixin(Line); | |
4376 | Line.prototype.lineNo = function() { return lineNo(this); }; | |
4377 | ||
4378 | function updateLine(line, text, markedSpans, estimateHeight) { | |
4379 | line.text = text; | |
4380 | if (line.stateAfter) line.stateAfter = null; | |
4381 | if (line.styles) line.styles = null; | |
4382 | if (line.order != null) line.order = null; | |
4383 | detachMarkedSpans(line); | |
4384 | attachMarkedSpans(line, markedSpans); | |
4385 | var estHeight = estimateHeight ? estimateHeight(line) : 1; | |
4386 | if (estHeight != line.height) updateLineHeight(line, estHeight); | |
4387 | } | |
4388 | ||
4389 | function cleanUpLine(line) { | |
4390 | line.parent = null; | |
4391 | detachMarkedSpans(line); | |
4392 | } | |
4393 | ||
4394 | // Run the given mode's parser over a line, update the styles | |
4395 | // array, which contains alternating fragments of text and CSS | |
4396 | // classes. | |
4397 | function runMode(cm, text, mode, state, f, forceToEnd) { | |
4398 | var flattenSpans = mode.flattenSpans; | |
4399 | if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; | |
4400 | var curStart = 0, curStyle = null; | |
4401 | var stream = new StringStream(text, cm.options.tabSize), style; | |
4402 | if (text == "" && mode.blankLine) mode.blankLine(state); | |
4403 | while (!stream.eol()) { | |
4404 | if (stream.pos > cm.options.maxHighlightLength) { | |
4405 | flattenSpans = false; | |
4406 | if (forceToEnd) processLine(cm, text, state, stream.pos); | |
4407 | stream.pos = text.length; | |
4408 | style = null; | |
4409 | } else { | |
4410 | style = mode.token(stream, state); | |
4411 | } | |
4412 | if (cm.options.addModeClass) { | |
4413 | var mName = CodeMirror.innerMode(mode, state).mode.name; | |
4414 | if (mName) style = "m-" + (style ? mName + " " + style : mName); | |
4415 | } | |
4416 | if (!flattenSpans || curStyle != style) { | |
4417 | if (curStart < stream.start) f(stream.start, curStyle); | |
4418 | curStart = stream.start; curStyle = style; | |
4419 | } | |
4420 | stream.start = stream.pos; | |
4421 | } | |
4422 | while (curStart < stream.pos) { | |
4423 | // Webkit seems to refuse to render text nodes longer than 57444 characters | |
4424 | var pos = Math.min(stream.pos, curStart + 50000); | |
4425 | f(pos, curStyle); | |
4426 | curStart = pos; | |
4427 | } | |
4428 | } | |
4429 | ||
4430 | function highlightLine(cm, line, state, forceToEnd) { | |
4431 | // A styles array always starts with a number identifying the | |
4432 | // mode/overlays that it is based on (for easy invalidation). | |
4433 | var st = [cm.state.modeGen]; | |
4434 | // Compute the base array of styles | |
4435 | runMode(cm, line.text, cm.doc.mode, state, function(end, style) { | |
4436 | st.push(end, style); | |
4437 | }, forceToEnd); | |
4438 | ||
4439 | // Run overlays, adjust style array. | |
4440 | for (var o = 0; o < cm.state.overlays.length; ++o) { | |
4441 | var overlay = cm.state.overlays[o], i = 1, at = 0; | |
4442 | runMode(cm, line.text, overlay.mode, true, function(end, style) { | |
4443 | var start = i; | |
4444 | // Ensure there's a token end at the current position, and that i points at it | |
4445 | while (at < end) { | |
4446 | var i_end = st[i]; | |
4447 | if (i_end > end) | |
4448 | st.splice(i, 1, end, st[i+1], i_end); | |
4449 | i += 2; | |
4450 | at = Math.min(end, i_end); | |
4451 | } | |
4452 | if (!style) return; | |
4453 | if (overlay.opaque) { | |
4454 | st.splice(start, i - start, end, style); | |
4455 | i = start + 2; | |
4456 | } else { | |
4457 | for (; start < i; start += 2) { | |
4458 | var cur = st[start+1]; | |
4459 | st[start+1] = cur ? cur + " " + style : style; | |
4460 | } | |
4461 | } | |
4462 | }); | |
4463 | } | |
4464 | ||
4465 | return st; | |
4466 | } | |
4467 | ||
4468 | function getLineStyles(cm, line) { | |
4469 | if (!line.styles || line.styles[0] != cm.state.modeGen) | |
4470 | line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); | |
4471 | return line.styles; | |
4472 | } | |
4473 | ||
4474 | // Lightweight form of highlight -- proceed over this line and | |
4475 | // update state, but don't save a style array. | |
4476 | function processLine(cm, text, state, startAt) { | |
4477 | var mode = cm.doc.mode; | |
4478 | var stream = new StringStream(text, cm.options.tabSize); | |
4479 | stream.start = stream.pos = startAt || 0; | |
4480 | if (text == "" && mode.blankLine) mode.blankLine(state); | |
4481 | while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { | |
4482 | mode.token(stream, state); | |
4483 | stream.start = stream.pos; | |
4484 | } | |
4485 | } | |
4486 | ||
4487 | var styleToClassCache = {}, styleToClassCacheWithMode = {}; | |
4488 | function interpretTokenStyle(style, builder) { | |
4489 | if (!style) return null; | |
4490 | for (;;) { | |
4491 | var lineClass = style.match(/(?:^|\s+)line-(background-)?(\S+)/); | |
4492 | if (!lineClass) break; | |
4493 | style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length); | |
4494 | var prop = lineClass[1] ? "bgClass" : "textClass"; | |
4495 | if (builder[prop] == null) | |
4496 | builder[prop] = lineClass[2]; | |
4497 | else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop])) | |
4498 | builder[prop] += " " + lineClass[2]; | |
4499 | } | |
4500 | if (/^\s*$/.test(style)) return null; | |
4501 | var cache = builder.cm.options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; | |
4502 | return cache[style] || | |
4503 | (cache[style] = style.replace(/\S+/g, "cm-$&")); | |
4504 | } | |
4505 | ||
4506 | function buildLineContent(cm, realLine, measure, copyWidgets) { | |
4507 | var merged, line = realLine, empty = true; | |
4508 | while (merged = collapsedSpanAtStart(line)) | |
4509 | line = getLine(cm.doc, merged.find().from.line); | |
4510 | ||
4511 | var builder = {pre: elt("pre"), col: 0, pos: 0, | |
4512 | measure: null, measuredSomething: false, cm: cm, | |
4513 | copyWidgets: copyWidgets}; | |
4514 | ||
4515 | do { | |
4516 | if (line.text) empty = false; | |
4517 | builder.measure = line == realLine && measure; | |
4518 | builder.pos = 0; | |
4519 | builder.addToken = builder.measure ? buildTokenMeasure : buildToken; | |
4520 | if ((ie || webkit) && cm.getOption("lineWrapping")) | |
4521 | builder.addToken = buildTokenSplitSpaces(builder.addToken); | |
4522 | var next = insertLineContent(line, builder, getLineStyles(cm, line)); | |
4523 | if (measure && line == realLine && !builder.measuredSomething) { | |
4524 | measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); | |
4525 | builder.measuredSomething = true; | |
4526 | } | |
4527 | if (next) line = getLine(cm.doc, next.to.line); | |
4528 | } while (next); | |
4529 | ||
4530 | if (measure && !builder.measuredSomething && !measure[0]) | |
4531 | measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); | |
4532 | if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) | |
4533 | builder.pre.appendChild(document.createTextNode("\u00a0")); | |
4534 | ||
4535 | var order; | |
4536 | // Work around problem with the reported dimensions of single-char | |
4537 | // direction spans on IE (issue #1129). See also the comment in | |
4538 | // cursorCoords. | |
4539 | if (measure && ie && (order = getOrder(line))) { | |
4540 | var l = order.length - 1; | |
4541 | if (order[l].from == order[l].to) --l; | |
4542 | var last = order[l], prev = order[l - 1]; | |
4543 | if (last.from + 1 == last.to && prev && last.level < prev.level) { | |
4544 | var span = measure[builder.pos - 1]; | |
4545 | if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), | |
4546 | span.nextSibling); | |
4547 | } | |
4548 | } | |
4549 | ||
4550 | var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass; | |
4551 | if (textClass) builder.pre.className = textClass; | |
4552 | ||
4553 | signal(cm, "renderLine", cm, realLine, builder.pre); | |
4554 | return builder; | |
4555 | } | |
4556 | ||
4557 | function defaultSpecialCharPlaceholder(ch) { | |
4558 | var token = elt("span", "\u2022", "cm-invalidchar"); | |
4559 | token.title = "\\u" + ch.charCodeAt(0).toString(16); | |
4560 | return token; | |
4561 | } | |
4562 | ||
4563 | function buildToken(builder, text, style, startStyle, endStyle, title) { | |
4564 | if (!text) return; | |
4565 | var special = builder.cm.options.specialChars; | |
4566 | if (!special.test(text)) { | |
4567 | builder.col += text.length; | |
4568 | var content = document.createTextNode(text); | |
4569 | } else { | |
4570 | var content = document.createDocumentFragment(), pos = 0; | |
4571 | while (true) { | |
4572 | special.lastIndex = pos; | |
4573 | var m = special.exec(text); | |
4574 | var skipped = m ? m.index - pos : text.length - pos; | |
4575 | if (skipped) { | |
4576 | content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); | |
4577 | builder.col += skipped; | |
4578 | } | |
4579 | if (!m) break; | |
4580 | pos += skipped + 1; | |
4581 | if (m[0] == "\t") { | |
4582 | var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; | |
4583 | content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); | |
4584 | builder.col += tabWidth; | |
4585 | } else { | |
4586 | var token = builder.cm.options.specialCharPlaceholder(m[0]); | |
4587 | content.appendChild(token); | |
4588 | builder.col += 1; | |
4589 | } | |
4590 | } | |
4591 | } | |
4592 | if (style || startStyle || endStyle || builder.measure) { | |
4593 | var fullStyle = style || ""; | |
4594 | if (startStyle) fullStyle += startStyle; | |
4595 | if (endStyle) fullStyle += endStyle; | |
4596 | var token = elt("span", [content], fullStyle); | |
4597 | if (title) token.title = title; | |
4598 | return builder.pre.appendChild(token); | |
4599 | } | |
4600 | builder.pre.appendChild(content); | |
4601 | } | |
4602 | ||
4603 | function buildTokenMeasure(builder, text, style, startStyle, endStyle) { | |
4604 | var wrapping = builder.cm.options.lineWrapping; | |
4605 | for (var i = 0; i < text.length; ++i) { | |
4606 | var start = i == 0, to = i + 1; | |
4607 | while (to < text.length && isExtendingChar(text.charAt(to))) ++to; | |
4608 | var ch = text.slice(i, to); | |
4609 | i = to - 1; | |
4610 | if (i && wrapping && spanAffectsWrapping(text, i)) | |
4611 | builder.pre.appendChild(elt("wbr")); | |
4612 | var old = builder.measure[builder.pos]; | |
4613 | var span = builder.measure[builder.pos] = | |
4614 | buildToken(builder, ch, style, | |
4615 | start && startStyle, i == text.length - 1 && endStyle); | |
4616 | if (old) span.leftSide = old.leftSide || old; | |
4617 | // In IE single-space nodes wrap differently than spaces | |
4618 | // embedded in larger text nodes, except when set to | |
4619 | // white-space: normal (issue #1268). | |
4620 | if (old_ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && | |
4621 | i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) | |
4622 | span.style.whiteSpace = "normal"; | |
4623 | builder.pos += ch.length; | |
4624 | } | |
4625 | if (text.length) builder.measuredSomething = true; | |
4626 | } | |
4627 | ||
4628 | function buildTokenSplitSpaces(inner) { | |
4629 | function split(old) { | |
4630 | var out = " "; | |
4631 | for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; | |
4632 | out += " "; | |
4633 | return out; | |
4634 | } | |
4635 | return function(builder, text, style, startStyle, endStyle, title) { | |
4636 | return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title); | |
4637 | }; | |
4638 | } | |
4639 | ||
4640 | function buildCollapsedSpan(builder, size, marker, ignoreWidget) { | |
4641 | var widget = !ignoreWidget && marker.replacedWith; | |
4642 | if (widget) { | |
4643 | if (builder.copyWidgets) widget = widget.cloneNode(true); | |
4644 | builder.pre.appendChild(widget); | |
4645 | if (builder.measure) { | |
4646 | if (size) { | |
4647 | builder.measure[builder.pos] = widget; | |
4648 | } else { | |
4649 | var elt = zeroWidthElement(builder.cm.display.measure); | |
4650 | if (marker.type == "bookmark" && !marker.insertLeft) | |
4651 | builder.measure[builder.pos] = builder.pre.appendChild(elt); | |
4652 | else if (builder.measure[builder.pos]) | |
4653 | return; | |
4654 | else | |
4655 | builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget); | |
4656 | } | |
4657 | builder.measuredSomething = true; | |
4658 | } | |
4659 | } | |
4660 | builder.pos += size; | |
4661 | } | |
4662 | ||
4663 | // Outputs a number of spans to make up a line, taking highlighting | |
4664 | // and marked text into account. | |
4665 | function insertLineContent(line, builder, styles) { | |
4666 | var spans = line.markedSpans, allText = line.text, at = 0; | |
4667 | if (!spans) { | |
4668 | for (var i = 1; i < styles.length; i+=2) | |
4669 | builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder)); | |
4670 | return; | |
4671 | } | |
4672 | ||
4673 | var len = allText.length, pos = 0, i = 1, text = "", style; | |
4674 | var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; | |
4675 | for (;;) { | |
4676 | if (nextChange == pos) { // Update current marker set | |
4677 | spanStyle = spanEndStyle = spanStartStyle = title = ""; | |
4678 | collapsed = null; nextChange = Infinity; | |
4679 | var foundBookmarks = []; | |
4680 | for (var j = 0; j < spans.length; ++j) { | |
4681 | var sp = spans[j], m = sp.marker; | |
4682 | if (sp.from <= pos && (sp.to == null || sp.to > pos)) { | |
4683 | if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } | |
4684 | if (m.className) spanStyle += " " + m.className; | |
4685 | if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; | |
4686 | if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; | |
4687 | if (m.title && !title) title = m.title; | |
4688 | if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) | |
4689 | collapsed = sp; | |
4690 | } else if (sp.from > pos && nextChange > sp.from) { | |
4691 | nextChange = sp.from; | |
4692 | } | |
4693 | if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m); | |
4694 | } | |
4695 | if (collapsed && (collapsed.from || 0) == pos) { | |
4696 | buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, | |
4697 | collapsed.marker, collapsed.from == null); | |
4698 | if (collapsed.to == null) return collapsed.marker.find(); | |
4699 | } | |
4700 | if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) | |
4701 | buildCollapsedSpan(builder, 0, foundBookmarks[j]); | |
4702 | } | |
4703 | if (pos >= len) break; | |
4704 | ||
4705 | var upto = Math.min(len, nextChange); | |
4706 | while (true) { | |
4707 | if (text) { | |
4708 | var end = pos + text.length; | |
4709 | if (!collapsed) { | |
4710 | var tokenText = end > upto ? text.slice(0, upto - pos) : text; | |
4711 | builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, | |
4712 | spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); | |
4713 | } | |
4714 | if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} | |
4715 | pos = end; | |
4716 | spanStartStyle = ""; | |
4717 | } | |
4718 | text = allText.slice(at, at = styles[i++]); | |
4719 | style = interpretTokenStyle(styles[i++], builder); | |
4720 | } | |
4721 | } | |
4722 | } | |
4723 | ||
4724 | // DOCUMENT DATA STRUCTURE | |
4725 | ||
4726 | function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { | |
4727 | function spansFor(n) {return markedSpans ? markedSpans[n] : null;} | |
4728 | function update(line, text, spans) { | |
4729 | updateLine(line, text, spans, estimateHeight); | |
4730 | signalLater(line, "change", line, change); | |
4731 | } | |
4732 | ||
4733 | var from = change.from, to = change.to, text = change.text; | |
4734 | var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); | |
4735 | var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; | |
4736 | ||
4737 | // First adjust the line structure | |
4738 | if (from.ch == 0 && to.ch == 0 && lastText == "" && | |
4739 | (!doc.cm || doc.cm.options.wholeLineUpdateBefore)) { | |
4740 | // This is a whole-line replace. Treated specially to make | |
4741 | // sure line objects move the way they are supposed to. | |
4742 | for (var i = 0, e = text.length - 1, added = []; i < e; ++i) | |
4743 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | |
4744 | update(lastLine, lastLine.text, lastSpans); | |
4745 | if (nlines) doc.remove(from.line, nlines); | |
4746 | if (added.length) doc.insert(from.line, added); | |
4747 | } else if (firstLine == lastLine) { | |
4748 | if (text.length == 1) { | |
4749 | update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); | |
4750 | } else { | |
4751 | for (var added = [], i = 1, e = text.length - 1; i < e; ++i) | |
4752 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | |
4753 | added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); | |
4754 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | |
4755 | doc.insert(from.line + 1, added); | |
4756 | } | |
4757 | } else if (text.length == 1) { | |
4758 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); | |
4759 | doc.remove(from.line + 1, nlines); | |
4760 | } else { | |
4761 | update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | |
4762 | update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); | |
4763 | for (var i = 1, e = text.length - 1, added = []; i < e; ++i) | |
4764 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | |
4765 | if (nlines > 1) doc.remove(from.line + 1, nlines - 1); | |
4766 | doc.insert(from.line + 1, added); | |
4767 | } | |
4768 | ||
4769 | signalLater(doc, "change", doc, change); | |
4770 | setSelection(doc, selAfter.anchor, selAfter.head, null, true); | |
4771 | } | |
4772 | ||
4773 | function LeafChunk(lines) { | |
4774 | this.lines = lines; | |
4775 | this.parent = null; | |
4776 | for (var i = 0, e = lines.length, height = 0; i < e; ++i) { | |
4777 | lines[i].parent = this; | |
4778 | height += lines[i].height; | |
4779 | } | |
4780 | this.height = height; | |
4781 | } | |
4782 | ||
4783 | LeafChunk.prototype = { | |
4784 | chunkSize: function() { return this.lines.length; }, | |
4785 | removeInner: function(at, n) { | |
4786 | for (var i = at, e = at + n; i < e; ++i) { | |
4787 | var line = this.lines[i]; | |
4788 | this.height -= line.height; | |
4789 | cleanUpLine(line); | |
4790 | signalLater(line, "delete"); | |
4791 | } | |
4792 | this.lines.splice(at, n); | |
4793 | }, | |
4794 | collapse: function(lines) { | |
4795 | lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); | |
4796 | }, | |
4797 | insertInner: function(at, lines, height) { | |
4798 | this.height += height; | |
4799 | this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); | |
4800 | for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; | |
4801 | }, | |
4802 | iterN: function(at, n, op) { | |
4803 | for (var e = at + n; at < e; ++at) | |
4804 | if (op(this.lines[at])) return true; | |
4805 | } | |
4806 | }; | |
4807 | ||
4808 | function BranchChunk(children) { | |
4809 | this.children = children; | |
4810 | var size = 0, height = 0; | |
4811 | for (var i = 0, e = children.length; i < e; ++i) { | |
4812 | var ch = children[i]; | |
4813 | size += ch.chunkSize(); height += ch.height; | |
4814 | ch.parent = this; | |
4815 | } | |
4816 | this.size = size; | |
4817 | this.height = height; | |
4818 | this.parent = null; | |
4819 | } | |
4820 | ||
4821 | BranchChunk.prototype = { | |
4822 | chunkSize: function() { return this.size; }, | |
4823 | removeInner: function(at, n) { | |
4824 | this.size -= n; | |
4825 | for (var i = 0; i < this.children.length; ++i) { | |
4826 | var child = this.children[i], sz = child.chunkSize(); | |
4827 | if (at < sz) { | |
4828 | var rm = Math.min(n, sz - at), oldHeight = child.height; | |
4829 | child.removeInner(at, rm); | |
4830 | this.height -= oldHeight - child.height; | |
4831 | if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } | |
4832 | if ((n -= rm) == 0) break; | |
4833 | at = 0; | |
4834 | } else at -= sz; | |
4835 | } | |
4836 | if (this.size - n < 25) { | |
4837 | var lines = []; | |
4838 | this.collapse(lines); | |
4839 | this.children = [new LeafChunk(lines)]; | |
4840 | this.children[0].parent = this; | |
4841 | } | |
4842 | }, | |
4843 | collapse: function(lines) { | |
4844 | for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); | |
4845 | }, | |
4846 | insertInner: function(at, lines, height) { | |
4847 | this.size += lines.length; | |
4848 | this.height += height; | |
4849 | for (var i = 0, e = this.children.length; i < e; ++i) { | |
4850 | var child = this.children[i], sz = child.chunkSize(); | |
4851 | if (at <= sz) { | |
4852 | child.insertInner(at, lines, height); | |
4853 | if (child.lines && child.lines.length > 50) { | |
4854 | while (child.lines.length > 50) { | |
4855 | var spilled = child.lines.splice(child.lines.length - 25, 25); | |
4856 | var newleaf = new LeafChunk(spilled); | |
4857 | child.height -= newleaf.height; | |
4858 | this.children.splice(i + 1, 0, newleaf); | |
4859 | newleaf.parent = this; | |
4860 | } | |
4861 | this.maybeSpill(); | |
4862 | } | |
4863 | break; | |
4864 | } | |
4865 | at -= sz; | |
4866 | } | |
4867 | }, | |
4868 | maybeSpill: function() { | |
4869 | if (this.children.length <= 10) return; | |
4870 | var me = this; | |
4871 | do { | |
4872 | var spilled = me.children.splice(me.children.length - 5, 5); | |
4873 | var sibling = new BranchChunk(spilled); | |
4874 | if (!me.parent) { // Become the parent node | |
4875 | var copy = new BranchChunk(me.children); | |
4876 | copy.parent = me; | |
4877 | me.children = [copy, sibling]; | |
4878 | me = copy; | |
4879 | } else { | |
4880 | me.size -= sibling.size; | |
4881 | me.height -= sibling.height; | |
4882 | var myIndex = indexOf(me.parent.children, me); | |
4883 | me.parent.children.splice(myIndex + 1, 0, sibling); | |
4884 | } | |
4885 | sibling.parent = me.parent; | |
4886 | } while (me.children.length > 10); | |
4887 | me.parent.maybeSpill(); | |
4888 | }, | |
4889 | iterN: function(at, n, op) { | |
4890 | for (var i = 0, e = this.children.length; i < e; ++i) { | |
4891 | var child = this.children[i], sz = child.chunkSize(); | |
4892 | if (at < sz) { | |
4893 | var used = Math.min(n, sz - at); | |
4894 | if (child.iterN(at, used, op)) return true; | |
4895 | if ((n -= used) == 0) break; | |
4896 | at = 0; | |
4897 | } else at -= sz; | |
4898 | } | |
4899 | } | |
4900 | }; | |
4901 | ||
4902 | var nextDocId = 0; | |
4903 | var Doc = CodeMirror.Doc = function(text, mode, firstLine) { | |
4904 | if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); | |
4905 | if (firstLine == null) firstLine = 0; | |
4906 | ||
4907 | BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); | |
4908 | this.first = firstLine; | |
4909 | this.scrollTop = this.scrollLeft = 0; | |
4910 | this.cantEdit = false; | |
4911 | this.history = makeHistory(); | |
4912 | this.cleanGeneration = 1; | |
4913 | this.frontier = firstLine; | |
4914 | var start = Pos(firstLine, 0); | |
4915 | this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; | |
4916 | this.id = ++nextDocId; | |
4917 | this.modeOption = mode; | |
4918 | ||
4919 | if (typeof text == "string") text = splitLines(text); | |
4920 | updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); | |
4921 | }; | |
4922 | ||
4923 | Doc.prototype = createObj(BranchChunk.prototype, { | |
4924 | constructor: Doc, | |
4925 | iter: function(from, to, op) { | |
4926 | if (op) this.iterN(from - this.first, to - from, op); | |
4927 | else this.iterN(this.first, this.first + this.size, from); | |
4928 | }, | |
4929 | ||
4930 | insert: function(at, lines) { | |
4931 | var height = 0; | |
4932 | for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; | |
4933 | this.insertInner(at - this.first, lines, height); | |
4934 | }, | |
4935 | remove: function(at, n) { this.removeInner(at - this.first, n); }, | |
4936 | ||
4937 | getValue: function(lineSep) { | |
4938 | var lines = getLines(this, this.first, this.first + this.size); | |
4939 | if (lineSep === false) return lines; | |
4940 | return lines.join(lineSep || "\n"); | |
4941 | }, | |
4942 | setValue: function(code) { | |
4943 | var top = Pos(this.first, 0), last = this.first + this.size - 1; | |
4944 | makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), | |
4945 | text: splitLines(code), origin: "setValue"}, | |
4946 | {head: top, anchor: top}, true); | |
4947 | }, | |
4948 | replaceRange: function(code, from, to, origin) { | |
4949 | from = clipPos(this, from); | |
4950 | to = to ? clipPos(this, to) : from; | |
4951 | replaceRange(this, code, from, to, origin); | |
4952 | }, | |
4953 | getRange: function(from, to, lineSep) { | |
4954 | var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); | |
4955 | if (lineSep === false) return lines; | |
4956 | return lines.join(lineSep || "\n"); | |
4957 | }, | |
4958 | ||
4959 | getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, | |
4960 | setLine: function(line, text) { | |
4961 | if (isLine(this, line)) | |
4962 | replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); | |
4963 | }, | |
4964 | removeLine: function(line) { | |
4965 | if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); | |
4966 | else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); | |
4967 | }, | |
4968 | ||
4969 | getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, | |
4970 | getLineNumber: function(line) {return lineNo(line);}, | |
4971 | ||
4972 | getLineHandleVisualStart: function(line) { | |
4973 | if (typeof line == "number") line = getLine(this, line); | |
4974 | return visualLine(this, line); | |
4975 | }, | |
4976 | ||
4977 | lineCount: function() {return this.size;}, | |
4978 | firstLine: function() {return this.first;}, | |
4979 | lastLine: function() {return this.first + this.size - 1;}, | |
4980 | ||
4981 | clipPos: function(pos) {return clipPos(this, pos);}, | |
4982 | ||
4983 | getCursor: function(start) { | |
4984 | var sel = this.sel, pos; | |
4985 | if (start == null || start == "head") pos = sel.head; | |
4986 | else if (start == "anchor") pos = sel.anchor; | |
4987 | else if (start == "end" || start === false) pos = sel.to; | |
4988 | else pos = sel.from; | |
4989 | return copyPos(pos); | |
4990 | }, | |
4991 | somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);}, | |
4992 | ||
4993 | setCursor: docOperation(function(line, ch, extend) { | |
4994 | var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); | |
4995 | if (extend) extendSelection(this, pos); | |
4996 | else setSelection(this, pos, pos); | |
4997 | }), | |
4998 | setSelection: docOperation(function(anchor, head, bias) { | |
4999 | setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias); | |
5000 | }), | |
5001 | extendSelection: docOperation(function(from, to, bias) { | |
5002 | extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias); | |
5003 | }), | |
5004 | ||
5005 | getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);}, | |
5006 | replaceSelection: function(code, collapse, origin) { | |
5007 | makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); | |
5008 | }, | |
5009 | undo: docOperation(function() {makeChangeFromHistory(this, "undo");}), | |
5010 | redo: docOperation(function() {makeChangeFromHistory(this, "redo");}), | |
5011 | ||
5012 | setExtending: function(val) {this.sel.extend = val;}, | |
5013 | ||
5014 | historySize: function() { | |
5015 | var hist = this.history; | |
5016 | return {undo: hist.done.length, redo: hist.undone.length}; | |
5017 | }, | |
5018 | clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);}, | |
5019 | ||
5020 | markClean: function() { | |
5021 | this.cleanGeneration = this.changeGeneration(true); | |
5022 | }, | |
5023 | changeGeneration: function(forceSplit) { | |
5024 | if (forceSplit) | |
5025 | this.history.lastOp = this.history.lastOrigin = null; | |
5026 | return this.history.generation; | |
5027 | }, | |
5028 | isClean: function (gen) { | |
5029 | return this.history.generation == (gen || this.cleanGeneration); | |
5030 | }, | |
5031 | ||
5032 | getHistory: function() { | |
5033 | return {done: copyHistoryArray(this.history.done), | |
5034 | undone: copyHistoryArray(this.history.undone)}; | |
5035 | }, | |
5036 | setHistory: function(histData) { | |
5037 | var hist = this.history = makeHistory(this.history.maxGeneration); | |
5038 | hist.done = histData.done.slice(0); | |
5039 | hist.undone = histData.undone.slice(0); | |
5040 | }, | |
5041 | ||
5042 | markText: function(from, to, options) { | |
5043 | return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); | |
5044 | }, | |
5045 | setBookmark: function(pos, options) { | |
5046 | var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), | |
5047 | insertLeft: options && options.insertLeft, | |
5048 | clearWhenEmpty: false}; | |
5049 | pos = clipPos(this, pos); | |
5050 | return markText(this, pos, pos, realOpts, "bookmark"); | |
5051 | }, | |
5052 | findMarksAt: function(pos) { | |
5053 | pos = clipPos(this, pos); | |
5054 | var markers = [], spans = getLine(this, pos.line).markedSpans; | |
5055 | if (spans) for (var i = 0; i < spans.length; ++i) { | |
5056 | var span = spans[i]; | |
5057 | if ((span.from == null || span.from <= pos.ch) && | |
5058 | (span.to == null || span.to >= pos.ch)) | |
5059 | markers.push(span.marker.parent || span.marker); | |
5060 | } | |
5061 | return markers; | |
5062 | }, | |
5063 | getAllMarks: function() { | |
5064 | var markers = []; | |
5065 | this.iter(function(line) { | |
5066 | var sps = line.markedSpans; | |
5067 | if (sps) for (var i = 0; i < sps.length; ++i) | |
5068 | if (sps[i].from != null) markers.push(sps[i].marker); | |
5069 | }); | |
5070 | return markers; | |
5071 | }, | |
5072 | ||
5073 | posFromIndex: function(off) { | |
5074 | var ch, lineNo = this.first; | |
5075 | this.iter(function(line) { | |
5076 | var sz = line.text.length + 1; | |
5077 | if (sz > off) { ch = off; return true; } | |
5078 | off -= sz; | |
5079 | ++lineNo; | |
5080 | }); | |
5081 | return clipPos(this, Pos(lineNo, ch)); | |
5082 | }, | |
5083 | indexFromPos: function (coords) { | |
5084 | coords = clipPos(this, coords); | |
5085 | var index = coords.ch; | |
5086 | if (coords.line < this.first || coords.ch < 0) return 0; | |
5087 | this.iter(this.first, coords.line, function (line) { | |
5088 | index += line.text.length + 1; | |
5089 | }); | |
5090 | return index; | |
5091 | }, | |
5092 | ||
5093 | copy: function(copyHistory) { | |
5094 | var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); | |
5095 | doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; | |
5096 | doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, | |
5097 | shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; | |
5098 | if (copyHistory) { | |
5099 | doc.history.undoDepth = this.history.undoDepth; | |
5100 | doc.setHistory(this.getHistory()); | |
5101 | } | |
5102 | return doc; | |
5103 | }, | |
5104 | ||
5105 | linkedDoc: function(options) { | |
5106 | if (!options) options = {}; | |
5107 | var from = this.first, to = this.first + this.size; | |
5108 | if (options.from != null && options.from > from) from = options.from; | |
5109 | if (options.to != null && options.to < to) to = options.to; | |
5110 | var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); | |
5111 | if (options.sharedHist) copy.history = this.history; | |
5112 | (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); | |
5113 | copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; | |
5114 | return copy; | |
5115 | }, | |
5116 | unlinkDoc: function(other) { | |
5117 | if (other instanceof CodeMirror) other = other.doc; | |
5118 | if (this.linked) for (var i = 0; i < this.linked.length; ++i) { | |
5119 | var link = this.linked[i]; | |
5120 | if (link.doc != other) continue; | |
5121 | this.linked.splice(i, 1); | |
5122 | other.unlinkDoc(this); | |
5123 | break; | |
5124 | } | |
5125 | // If the histories were shared, split them again | |
5126 | if (other.history == this.history) { | |
5127 | var splitIds = [other.id]; | |
5128 | linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); | |
5129 | other.history = makeHistory(); | |
5130 | other.history.done = copyHistoryArray(this.history.done, splitIds); | |
5131 | other.history.undone = copyHistoryArray(this.history.undone, splitIds); | |
5132 | } | |
5133 | }, | |
5134 | iterLinkedDocs: function(f) {linkedDocs(this, f);}, | |
5135 | ||
5136 | getMode: function() {return this.mode;}, | |
5137 | getEditor: function() {return this.cm;} | |
5138 | }); | |
5139 | ||
5140 | Doc.prototype.eachLine = Doc.prototype.iter; | |
5141 | ||
5142 | // The Doc methods that should be available on CodeMirror instances | |
5143 | var dontDelegate = "iter insert remove copy getEditor".split(" "); | |
5144 | for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) | |
5145 | CodeMirror.prototype[prop] = (function(method) { | |
5146 | return function() {return method.apply(this.doc, arguments);}; | |
5147 | })(Doc.prototype[prop]); | |
5148 | ||
5149 | eventMixin(Doc); | |
5150 | ||
5151 | function linkedDocs(doc, f, sharedHistOnly) { | |
5152 | function propagate(doc, skip, sharedHist) { | |
5153 | if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { | |
5154 | var rel = doc.linked[i]; | |
5155 | if (rel.doc == skip) continue; | |
5156 | var shared = sharedHist && rel.sharedHist; | |
5157 | if (sharedHistOnly && !shared) continue; | |
5158 | f(rel.doc, shared); | |
5159 | propagate(rel.doc, doc, shared); | |
5160 | } | |
5161 | } | |
5162 | propagate(doc, null, true); | |
5163 | } | |
5164 | ||
5165 | function attachDoc(cm, doc) { | |
5166 | if (doc.cm) throw new Error("This document is already in use."); | |
5167 | cm.doc = doc; | |
5168 | doc.cm = cm; | |
5169 | estimateLineHeights(cm); | |
5170 | loadMode(cm); | |
5171 | if (!cm.options.lineWrapping) computeMaxLength(cm); | |
5172 | cm.options.mode = doc.modeOption; | |
5173 | regChange(cm); | |
5174 | } | |
5175 | ||
5176 | // LINE UTILITIES | |
5177 | ||
5178 | function getLine(chunk, n) { | |
5179 | n -= chunk.first; | |
5180 | while (!chunk.lines) { | |
5181 | for (var i = 0;; ++i) { | |
5182 | var child = chunk.children[i], sz = child.chunkSize(); | |
5183 | if (n < sz) { chunk = child; break; } | |
5184 | n -= sz; | |
5185 | } | |
5186 | } | |
5187 | return chunk.lines[n]; | |
5188 | } | |
5189 | ||
5190 | function getBetween(doc, start, end) { | |
5191 | var out = [], n = start.line; | |
5192 | doc.iter(start.line, end.line + 1, function(line) { | |
5193 | var text = line.text; | |
5194 | if (n == end.line) text = text.slice(0, end.ch); | |
5195 | if (n == start.line) text = text.slice(start.ch); | |
5196 | out.push(text); | |
5197 | ++n; | |
5198 | }); | |
5199 | return out; | |
5200 | } | |
5201 | function getLines(doc, from, to) { | |
5202 | var out = []; | |
5203 | doc.iter(from, to, function(line) { out.push(line.text); }); | |
5204 | return out; | |
5205 | } | |
5206 | ||
5207 | function updateLineHeight(line, height) { | |
5208 | var diff = height - line.height; | |
5209 | for (var n = line; n; n = n.parent) n.height += diff; | |
5210 | } | |
5211 | ||
5212 | function lineNo(line) { | |
5213 | if (line.parent == null) return null; | |
5214 | var cur = line.parent, no = indexOf(cur.lines, line); | |
5215 | for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { | |
5216 | for (var i = 0;; ++i) { | |
5217 | if (chunk.children[i] == cur) break; | |
5218 | no += chunk.children[i].chunkSize(); | |
5219 | } | |
5220 | } | |
5221 | return no + cur.first; | |
5222 | } | |
5223 | ||
5224 | function lineAtHeight(chunk, h) { | |
5225 | var n = chunk.first; | |
5226 | outer: do { | |
5227 | for (var i = 0, e = chunk.children.length; i < e; ++i) { | |
5228 | var child = chunk.children[i], ch = child.height; | |
5229 | if (h < ch) { chunk = child; continue outer; } | |
5230 | h -= ch; | |
5231 | n += child.chunkSize(); | |
5232 | } | |
5233 | return n; | |
5234 | } while (!chunk.lines); | |
5235 | for (var i = 0, e = chunk.lines.length; i < e; ++i) { | |
5236 | var line = chunk.lines[i], lh = line.height; | |
5237 | if (h < lh) break; | |
5238 | h -= lh; | |
5239 | } | |
5240 | return n + i; | |
5241 | } | |
5242 | ||
5243 | function heightAtLine(cm, lineObj) { | |
5244 | lineObj = visualLine(cm.doc, lineObj); | |
5245 | ||
5246 | var h = 0, chunk = lineObj.parent; | |
5247 | for (var i = 0; i < chunk.lines.length; ++i) { | |
5248 | var line = chunk.lines[i]; | |
5249 | if (line == lineObj) break; | |
5250 | else h += line.height; | |
5251 | } | |
5252 | for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { | |
5253 | for (var i = 0; i < p.children.length; ++i) { | |
5254 | var cur = p.children[i]; | |
5255 | if (cur == chunk) break; | |
5256 | else h += cur.height; | |
5257 | } | |
5258 | } | |
5259 | return h; | |
5260 | } | |
5261 | ||
5262 | function getOrder(line) { | |
5263 | var order = line.order; | |
5264 | if (order == null) order = line.order = bidiOrdering(line.text); | |
5265 | return order; | |
5266 | } | |
5267 | ||
5268 | // HISTORY | |
5269 | ||
5270 | function makeHistory(startGen) { | |
5271 | return { | |
5272 | // Arrays of history events. Doing something adds an event to | |
5273 | // done and clears undo. Undoing moves events from done to | |
5274 | // undone, redoing moves them in the other direction. | |
5275 | done: [], undone: [], undoDepth: Infinity, | |
5276 | // Used to track when changes can be merged into a single undo | |
5277 | // event | |
5278 | lastTime: 0, lastOp: null, lastOrigin: null, | |
5279 | // Used by the isClean() method | |
5280 | generation: startGen || 1, maxGeneration: startGen || 1 | |
5281 | }; | |
5282 | } | |
5283 | ||
5284 | function attachLocalSpans(doc, change, from, to) { | |
5285 | var existing = change["spans_" + doc.id], n = 0; | |
5286 | doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { | |
5287 | if (line.markedSpans) | |
5288 | (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; | |
5289 | ++n; | |
5290 | }); | |
5291 | } | |
5292 | ||
5293 | function historyChangeFromChange(doc, change) { | |
5294 | var from = { line: change.from.line, ch: change.from.ch }; | |
5295 | var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; | |
5296 | attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); | |
5297 | linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); | |
5298 | return histChange; | |
5299 | } | |
5300 | ||
5301 | function addToHistory(doc, change, selAfter, opId) { | |
5302 | var hist = doc.history; | |
5303 | hist.undone.length = 0; | |
5304 | var time = +new Date, cur = lst(hist.done); | |
5305 | ||
5306 | if (cur && | |
5307 | (hist.lastOp == opId || | |
5308 | hist.lastOrigin == change.origin && change.origin && | |
5309 | ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || | |
5310 | change.origin.charAt(0) == "*"))) { | |
5311 | // Merge this change into the last event | |
5312 | var last = lst(cur.changes); | |
5313 | if (posEq(change.from, change.to) && posEq(change.from, last.to)) { | |
5314 | // Optimized case for simple insertion -- don't want to add | |
5315 | // new changesets for every character typed | |
5316 | last.to = changeEnd(change); | |
5317 | } else { | |
5318 | // Add new sub-event | |
5319 | cur.changes.push(historyChangeFromChange(doc, change)); | |
5320 | } | |
5321 | cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; | |
5322 | } else { | |
5323 | // Can not be merged, start a new event. | |
5324 | cur = {changes: [historyChangeFromChange(doc, change)], | |
5325 | generation: hist.generation, | |
5326 | anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, | |
5327 | anchorAfter: selAfter.anchor, headAfter: selAfter.head}; | |
5328 | hist.done.push(cur); | |
5329 | while (hist.done.length > hist.undoDepth) | |
5330 | hist.done.shift(); | |
5331 | } | |
5332 | hist.generation = ++hist.maxGeneration; | |
5333 | hist.lastTime = time; | |
5334 | hist.lastOp = opId; | |
5335 | hist.lastOrigin = change.origin; | |
5336 | ||
5337 | if (!last) signal(doc, "historyAdded"); | |
5338 | } | |
5339 | ||
5340 | function removeClearedSpans(spans) { | |
5341 | if (!spans) return null; | |
5342 | for (var i = 0, out; i < spans.length; ++i) { | |
5343 | if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } | |
5344 | else if (out) out.push(spans[i]); | |
5345 | } | |
5346 | return !out ? spans : out.length ? out : null; | |
5347 | } | |
5348 | ||
5349 | function getOldSpans(doc, change) { | |
5350 | var found = change["spans_" + doc.id]; | |
5351 | if (!found) return null; | |
5352 | for (var i = 0, nw = []; i < change.text.length; ++i) | |
5353 | nw.push(removeClearedSpans(found[i])); | |
5354 | return nw; | |
5355 | } | |
5356 | ||
5357 | // Used both to provide a JSON-safe object in .getHistory, and, when | |
5358 | // detaching a document, to split the history in two | |
5359 | function copyHistoryArray(events, newGroup) { | |
5360 | for (var i = 0, copy = []; i < events.length; ++i) { | |
5361 | var event = events[i], changes = event.changes, newChanges = []; | |
5362 | copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, | |
5363 | anchorAfter: event.anchorAfter, headAfter: event.headAfter}); | |
5364 | for (var j = 0; j < changes.length; ++j) { | |
5365 | var change = changes[j], m; | |
5366 | newChanges.push({from: change.from, to: change.to, text: change.text}); | |
5367 | if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { | |
5368 | if (indexOf(newGroup, Number(m[1])) > -1) { | |
5369 | lst(newChanges)[prop] = change[prop]; | |
5370 | delete change[prop]; | |
5371 | } | |
5372 | } | |
5373 | } | |
5374 | } | |
5375 | return copy; | |
5376 | } | |
5377 | ||
5378 | // Rebasing/resetting history to deal with externally-sourced changes | |
5379 | ||
5380 | function rebaseHistSel(pos, from, to, diff) { | |
5381 | if (to < pos.line) { | |
5382 | pos.line += diff; | |
5383 | } else if (from < pos.line) { | |
5384 | pos.line = from; | |
5385 | pos.ch = 0; | |
5386 | } | |
5387 | } | |
5388 | ||
5389 | // Tries to rebase an array of history events given a change in the | |
5390 | // document. If the change touches the same lines as the event, the | |
5391 | // event, and everything 'behind' it, is discarded. If the change is | |
5392 | // before the event, the event's positions are updated. Uses a | |
5393 | // copy-on-write scheme for the positions, to avoid having to | |
5394 | // reallocate them all on every rebase, but also avoid problems with | |
5395 | // shared position objects being unsafely updated. | |
5396 | function rebaseHistArray(array, from, to, diff) { | |
5397 | for (var i = 0; i < array.length; ++i) { | |
5398 | var sub = array[i], ok = true; | |
5399 | for (var j = 0; j < sub.changes.length; ++j) { | |
5400 | var cur = sub.changes[j]; | |
5401 | if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); } | |
5402 | if (to < cur.from.line) { | |
5403 | cur.from.line += diff; | |
5404 | cur.to.line += diff; | |
5405 | } else if (from <= cur.to.line) { | |
5406 | ok = false; | |
5407 | break; | |
5408 | } | |
5409 | } | |
5410 | if (!sub.copied) { | |
5411 | sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore); | |
5412 | sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter); | |
5413 | sub.copied = true; | |
5414 | } | |
5415 | if (!ok) { | |
5416 | array.splice(0, i + 1); | |
5417 | i = 0; | |
5418 | } else { | |
5419 | rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore); | |
5420 | rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter); | |
5421 | } | |
5422 | } | |
5423 | } | |
5424 | ||
5425 | function rebaseHist(hist, change) { | |
5426 | var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; | |
5427 | rebaseHistArray(hist.done, from, to, diff); | |
5428 | rebaseHistArray(hist.undone, from, to, diff); | |
5429 | } | |
5430 | ||
5431 | // EVENT OPERATORS | |
5432 | ||
5433 | function stopMethod() {e_stop(this);} | |
5434 | // Ensure an event has a stop method. | |
5435 | function addStop(event) { | |
5436 | if (!event.stop) event.stop = stopMethod; | |
5437 | return event; | |
5438 | } | |
5439 | ||
5440 | function e_preventDefault(e) { | |
5441 | if (e.preventDefault) e.preventDefault(); | |
5442 | else e.returnValue = false; | |
5443 | } | |
5444 | function e_stopPropagation(e) { | |
5445 | if (e.stopPropagation) e.stopPropagation(); | |
5446 | else e.cancelBubble = true; | |
5447 | } | |
5448 | function e_defaultPrevented(e) { | |
5449 | return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; | |
5450 | } | |
5451 | function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} | |
5452 | CodeMirror.e_stop = e_stop; | |
5453 | CodeMirror.e_preventDefault = e_preventDefault; | |
5454 | CodeMirror.e_stopPropagation = e_stopPropagation; | |
5455 | ||
5456 | function e_target(e) {return e.target || e.srcElement;} | |
5457 | function e_button(e) { | |
5458 | var b = e.which; | |
5459 | if (b == null) { | |
5460 | if (e.button & 1) b = 1; | |
5461 | else if (e.button & 2) b = 3; | |
5462 | else if (e.button & 4) b = 2; | |
5463 | } | |
5464 | if (mac && e.ctrlKey && b == 1) b = 3; | |
5465 | return b; | |
5466 | } | |
5467 | ||
5468 | // EVENT HANDLING | |
5469 | ||
5470 | function on(emitter, type, f) { | |
5471 | if (emitter.addEventListener) | |
5472 | emitter.addEventListener(type, f, false); | |
5473 | else if (emitter.attachEvent) | |
5474 | emitter.attachEvent("on" + type, f); | |
5475 | else { | |
5476 | var map = emitter._handlers || (emitter._handlers = {}); | |
5477 | var arr = map[type] || (map[type] = []); | |
5478 | arr.push(f); | |
5479 | } | |
5480 | } | |
5481 | ||
5482 | function off(emitter, type, f) { | |
5483 | if (emitter.removeEventListener) | |
5484 | emitter.removeEventListener(type, f, false); | |
5485 | else if (emitter.detachEvent) | |
5486 | emitter.detachEvent("on" + type, f); | |
5487 | else { | |
5488 | var arr = emitter._handlers && emitter._handlers[type]; | |
5489 | if (!arr) return; | |
5490 | for (var i = 0; i < arr.length; ++i) | |
5491 | if (arr[i] == f) { arr.splice(i, 1); break; } | |
5492 | } | |
5493 | } | |
5494 | ||
5495 | function signal(emitter, type /*, values...*/) { | |
5496 | var arr = emitter._handlers && emitter._handlers[type]; | |
5497 | if (!arr) return; | |
5498 | var args = Array.prototype.slice.call(arguments, 2); | |
5499 | for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); | |
5500 | } | |
5501 | ||
5502 | var delayedCallbacks, delayedCallbackDepth = 0; | |
5503 | function signalLater(emitter, type /*, values...*/) { | |
5504 | var arr = emitter._handlers && emitter._handlers[type]; | |
5505 | if (!arr) return; | |
5506 | var args = Array.prototype.slice.call(arguments, 2); | |
5507 | if (!delayedCallbacks) { | |
5508 | ++delayedCallbackDepth; | |
5509 | delayedCallbacks = []; | |
5510 | setTimeout(fireDelayed, 0); | |
5511 | } | |
5512 | function bnd(f) {return function(){f.apply(null, args);};}; | |
5513 | for (var i = 0; i < arr.length; ++i) | |
5514 | delayedCallbacks.push(bnd(arr[i])); | |
5515 | } | |
5516 | ||
5517 | function signalDOMEvent(cm, e, override) { | |
5518 | signal(cm, override || e.type, cm, e); | |
5519 | return e_defaultPrevented(e) || e.codemirrorIgnore; | |
5520 | } | |
5521 | ||
5522 | function fireDelayed() { | |
5523 | --delayedCallbackDepth; | |
5524 | var delayed = delayedCallbacks; | |
5525 | delayedCallbacks = null; | |
5526 | for (var i = 0; i < delayed.length; ++i) delayed[i](); | |
5527 | } | |
5528 | ||
5529 | function hasHandler(emitter, type) { | |
5530 | var arr = emitter._handlers && emitter._handlers[type]; | |
5531 | return arr && arr.length > 0; | |
5532 | } | |
5533 | ||
5534 | CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; | |
5535 | ||
5536 | function eventMixin(ctor) { | |
5537 | ctor.prototype.on = function(type, f) {on(this, type, f);}; | |
5538 | ctor.prototype.off = function(type, f) {off(this, type, f);}; | |
5539 | } | |
5540 | ||
5541 | // MISC UTILITIES | |
5542 | ||
5543 | // Number of pixels added to scroller and sizer to hide scrollbar | |
5544 | var scrollerCutOff = 30; | |
5545 | ||
5546 | // Returned or thrown by various protocols to signal 'I'm not | |
5547 | // handling this'. | |
5548 | var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; | |
5549 | ||
5550 | function Delayed() {this.id = null;} | |
5551 | Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; | |
5552 | ||
5553 | // Counts the column offset in a string, taking tabs into account. | |
5554 | // Used mostly to find indentation. | |
5555 | function countColumn(string, end, tabSize, startIndex, startValue) { | |
5556 | if (end == null) { | |
5557 | end = string.search(/[^\s\u00a0]/); | |
5558 | if (end == -1) end = string.length; | |
5559 | } | |
5560 | for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { | |
5561 | if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); | |
5562 | else ++n; | |
5563 | } | |
5564 | return n; | |
5565 | } | |
5566 | CodeMirror.countColumn = countColumn; | |
5567 | ||
5568 | var spaceStrs = [""]; | |
5569 | function spaceStr(n) { | |
5570 | while (spaceStrs.length <= n) | |
5571 | spaceStrs.push(lst(spaceStrs) + " "); | |
5572 | return spaceStrs[n]; | |
5573 | } | |
5574 | ||
5575 | function lst(arr) { return arr[arr.length-1]; } | |
5576 | ||
5577 | function selectInput(node) { | |
5578 | if (ios) { // Mobile Safari apparently has a bug where select() is broken. | |
5579 | node.selectionStart = 0; | |
5580 | node.selectionEnd = node.value.length; | |
5581 | } else { | |
5582 | // Suppress mysterious IE10 errors | |
5583 | try { node.select(); } | |
5584 | catch(_e) {} | |
5585 | } | |
5586 | } | |
5587 | ||
5588 | function indexOf(collection, elt) { | |
5589 | if (collection.indexOf) return collection.indexOf(elt); | |
5590 | for (var i = 0, e = collection.length; i < e; ++i) | |
5591 | if (collection[i] == elt) return i; | |
5592 | return -1; | |
5593 | } | |
5594 | ||
5595 | function createObj(base, props) { | |
5596 | function Obj() {} | |
5597 | Obj.prototype = base; | |
5598 | var inst = new Obj(); | |
5599 | if (props) copyObj(props, inst); | |
5600 | return inst; | |
5601 | } | |
5602 | ||
5603 | function copyObj(obj, target) { | |
5604 | if (!target) target = {}; | |
5605 | for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; | |
5606 | return target; | |
5607 | } | |
5608 | ||
5609 | function emptyArray(size) { | |
5610 | for (var a = [], i = 0; i < size; ++i) a.push(undefined); | |
5611 | return a; | |
5612 | } | |
5613 | ||
5614 | function bind(f) { | |
5615 | var args = Array.prototype.slice.call(arguments, 1); | |
5616 | return function(){return f.apply(null, args);}; | |
5617 | } | |
5618 | ||
5619 | var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; | |
5620 | function isWordChar(ch) { | |
5621 | return /\w/.test(ch) || ch > "\x80" && | |
5622 | (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); | |
5623 | } | |
5624 | ||
5625 | function isEmpty(obj) { | |
5626 | for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; | |
5627 | return true; | |
5628 | } | |
5629 | ||
5630 | 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]/; | |
5631 | function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); } | |
5632 | ||
5633 | // DOM UTILITIES | |
5634 | ||
5635 | function elt(tag, content, className, style) { | |
5636 | var e = document.createElement(tag); | |
5637 | if (className) e.className = className; | |
5638 | if (style) e.style.cssText = style; | |
5639 | if (typeof content == "string") setTextContent(e, content); | |
5640 | else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); | |
5641 | return e; | |
5642 | } | |
5643 | ||
5644 | function removeChildren(e) { | |
5645 | for (var count = e.childNodes.length; count > 0; --count) | |
5646 | e.removeChild(e.firstChild); | |
5647 | return e; | |
5648 | } | |
5649 | ||
5650 | function removeChildrenAndAdd(parent, e) { | |
5651 | return removeChildren(parent).appendChild(e); | |
5652 | } | |
5653 | ||
5654 | function setTextContent(e, str) { | |
5655 | if (ie_lt9) { | |
5656 | e.innerHTML = ""; | |
5657 | e.appendChild(document.createTextNode(str)); | |
5658 | } else e.textContent = str; | |
5659 | } | |
5660 | ||
5661 | function getRect(node) { | |
5662 | return node.getBoundingClientRect(); | |
5663 | } | |
5664 | CodeMirror.replaceGetRect = function(f) { getRect = f; }; | |
5665 | ||
5666 | // FEATURE DETECTION | |
5667 | ||
5668 | // Detect drag-and-drop | |
5669 | var dragAndDrop = function() { | |
5670 | // There is *some* kind of drag-and-drop support in IE6-8, but I | |
5671 | // couldn't get it to work yet. | |
5672 | if (ie_lt9) return false; | |
5673 | var div = elt('div'); | |
5674 | return "draggable" in div || "dragDrop" in div; | |
5675 | }(); | |
5676 | ||
5677 | // For a reason I have yet to figure out, some browsers disallow | |
5678 | // word wrapping between certain characters *only* if a new inline | |
5679 | // element is started between them. This makes it hard to reliably | |
5680 | // measure the position of things, since that requires inserting an | |
5681 | // extra span. This terribly fragile set of tests matches the | |
5682 | // character combinations that suffer from this phenomenon on the | |
5683 | // various browsers. | |
5684 | function spanAffectsWrapping() { return false; } | |
5685 | if (gecko) // Only for "$'" | |
5686 | spanAffectsWrapping = function(str, i) { | |
5687 | return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; | |
5688 | }; | |
5689 | else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) | |
5690 | spanAffectsWrapping = function(str, i) { | |
5691 | return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); | |
5692 | }; | |
5693 | else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent)) | |
5694 | spanAffectsWrapping = function(str, i) { | |
5695 | var code = str.charCodeAt(i - 1); | |
5696 | return code >= 8208 && code <= 8212; | |
5697 | }; | |
5698 | else if (webkit) | |
5699 | spanAffectsWrapping = function(str, i) { | |
5700 | if (i > 1 && str.charCodeAt(i - 1) == 45) { | |
5701 | if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true; | |
5702 | if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false; | |
5703 | } | |
5704 | return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|\u2026[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); | |
5705 | }; | |
5706 | ||
5707 | var knownScrollbarWidth; | |
5708 | function scrollbarWidth(measure) { | |
5709 | if (knownScrollbarWidth != null) return knownScrollbarWidth; | |
5710 | var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); | |
5711 | removeChildrenAndAdd(measure, test); | |
5712 | if (test.offsetWidth) | |
5713 | knownScrollbarWidth = test.offsetHeight - test.clientHeight; | |
5714 | return knownScrollbarWidth || 0; | |
5715 | } | |
5716 | ||
5717 | var zwspSupported; | |
5718 | function zeroWidthElement(measure) { | |
5719 | if (zwspSupported == null) { | |
5720 | var test = elt("span", "\u200b"); | |
5721 | removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); | |
5722 | if (measure.firstChild.offsetHeight != 0) | |
5723 | zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; | |
5724 | } | |
5725 | if (zwspSupported) return elt("span", "\u200b"); | |
5726 | else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); | |
5727 | } | |
5728 | ||
5729 | // See if "".split is the broken IE version, if so, provide an | |
5730 | // alternative way to split lines. | |
5731 | var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { | |
5732 | var pos = 0, result = [], l = string.length; | |
5733 | while (pos <= l) { | |
5734 | var nl = string.indexOf("\n", pos); | |
5735 | if (nl == -1) nl = string.length; | |
5736 | var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); | |
5737 | var rt = line.indexOf("\r"); | |
5738 | if (rt != -1) { | |
5739 | result.push(line.slice(0, rt)); | |
5740 | pos += rt + 1; | |
5741 | } else { | |
5742 | result.push(line); | |
5743 | pos = nl + 1; | |
5744 | } | |
5745 | } | |
5746 | return result; | |
5747 | } : function(string){return string.split(/\r\n?|\n/);}; | |
5748 | CodeMirror.splitLines = splitLines; | |
5749 | ||
5750 | var hasSelection = window.getSelection ? function(te) { | |
5751 | try { return te.selectionStart != te.selectionEnd; } | |
5752 | catch(e) { return false; } | |
5753 | } : function(te) { | |
5754 | try {var range = te.ownerDocument.selection.createRange();} | |
5755 | catch(e) {} | |
5756 | if (!range || range.parentElement() != te) return false; | |
5757 | return range.compareEndPoints("StartToEnd", range) != 0; | |
5758 | }; | |
5759 | ||
5760 | var hasCopyEvent = (function() { | |
5761 | var e = elt("div"); | |
5762 | if ("oncopy" in e) return true; | |
5763 | e.setAttribute("oncopy", "return;"); | |
5764 | return typeof e.oncopy == 'function'; | |
5765 | })(); | |
5766 | ||
5767 | // KEY NAMING | |
5768 | ||
5769 | var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", | |
5770 | 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", | |
5771 | 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", | |
5772 | 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete", | |
5773 | 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", | |
5774 | 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", | |
5775 | 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"}; | |
5776 | CodeMirror.keyNames = keyNames; | |
5777 | (function() { | |
5778 | // Number keys | |
5779 | for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i); | |
5780 | // Alphabetic keys | |
5781 | for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); | |
5782 | // Function keys | |
5783 | for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; | |
5784 | })(); | |
5785 | ||
5786 | // BIDI HELPERS | |
5787 | ||
5788 | function iterateBidiSections(order, from, to, f) { | |
5789 | if (!order) return f(from, to, "ltr"); | |
5790 | var found = false; | |
5791 | for (var i = 0; i < order.length; ++i) { | |
5792 | var part = order[i]; | |
5793 | if (part.from < to && part.to > from || from == to && part.to == from) { | |
5794 | f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); | |
5795 | found = true; | |
5796 | } | |
5797 | } | |
5798 | if (!found) f(from, to, "ltr"); | |
5799 | } | |
5800 | ||
5801 | function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } | |
5802 | function bidiRight(part) { return part.level % 2 ? part.from : part.to; } | |
5803 | ||
5804 | function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } | |
5805 | function lineRight(line) { | |
5806 | var order = getOrder(line); | |
5807 | if (!order) return line.text.length; | |
5808 | return bidiRight(lst(order)); | |
5809 | } | |
5810 | ||
5811 | function lineStart(cm, lineN) { | |
5812 | var line = getLine(cm.doc, lineN); | |
5813 | var visual = visualLine(cm.doc, line); | |
5814 | if (visual != line) lineN = lineNo(visual); | |
5815 | var order = getOrder(visual); | |
5816 | var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); | |
5817 | return Pos(lineN, ch); | |
5818 | } | |
5819 | function lineEnd(cm, lineN) { | |
5820 | var merged, line; | |
5821 | while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) | |
5822 | lineN = merged.find().to.line; | |
5823 | var order = getOrder(line); | |
5824 | var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); | |
5825 | return Pos(lineN, ch); | |
5826 | } | |
5827 | ||
5828 | function compareBidiLevel(order, a, b) { | |
5829 | var linedir = order[0].level; | |
5830 | if (a == linedir) return true; | |
5831 | if (b == linedir) return false; | |
5832 | return a < b; | |
5833 | } | |
5834 | var bidiOther; | |
5835 | function getBidiPartAt(order, pos) { | |
5836 | bidiOther = null; | |
5837 | for (var i = 0, found; i < order.length; ++i) { | |
5838 | var cur = order[i]; | |
5839 | if (cur.from < pos && cur.to > pos) return i; | |
5840 | if ((cur.from == pos || cur.to == pos)) { | |
5841 | if (found == null) { | |
5842 | found = i; | |
5843 | } else if (compareBidiLevel(order, cur.level, order[found].level)) { | |
5844 | if (cur.from != cur.to) bidiOther = found; | |
5845 | return i; | |
5846 | } else { | |
5847 | if (cur.from != cur.to) bidiOther = i; | |
5848 | return found; | |
5849 | } | |
5850 | } | |
5851 | } | |
5852 | return found; | |
5853 | } | |
5854 | ||
5855 | function moveInLine(line, pos, dir, byUnit) { | |
5856 | if (!byUnit) return pos + dir; | |
5857 | do pos += dir; | |
5858 | while (pos > 0 && isExtendingChar(line.text.charAt(pos))); | |
5859 | return pos; | |
5860 | } | |
5861 | ||
5862 | // This is somewhat involved. It is needed in order to move | |
5863 | // 'visually' through bi-directional text -- i.e., pressing left | |
5864 | // should make the cursor go left, even when in RTL text. The | |
5865 | // tricky part is the 'jumps', where RTL and LTR text touch each | |
5866 | // other. This often requires the cursor offset to move more than | |
5867 | // one unit, in order to visually move one unit. | |
5868 | function moveVisually(line, start, dir, byUnit) { | |
5869 | var bidi = getOrder(line); | |
5870 | if (!bidi) return moveLogically(line, start, dir, byUnit); | |
5871 | var pos = getBidiPartAt(bidi, start), part = bidi[pos]; | |
5872 | var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); | |
5873 | ||
5874 | for (;;) { | |
5875 | if (target > part.from && target < part.to) return target; | |
5876 | if (target == part.from || target == part.to) { | |
5877 | if (getBidiPartAt(bidi, target) == pos) return target; | |
5878 | part = bidi[pos += dir]; | |
5879 | return (dir > 0) == part.level % 2 ? part.to : part.from; | |
5880 | } else { | |
5881 | part = bidi[pos += dir]; | |
5882 | if (!part) return null; | |
5883 | if ((dir > 0) == part.level % 2) | |
5884 | target = moveInLine(line, part.to, -1, byUnit); | |
5885 | else | |
5886 | target = moveInLine(line, part.from, 1, byUnit); | |
5887 | } | |
5888 | } | |
5889 | } | |
5890 | ||
5891 | function moveLogically(line, start, dir, byUnit) { | |
5892 | var target = start + dir; | |
5893 | if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir; | |
5894 | return target < 0 || target > line.text.length ? null : target; | |
5895 | } | |
5896 | ||
5897 | // Bidirectional ordering algorithm | |
5898 | // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm | |
5899 | // that this (partially) implements. | |
5900 | ||
5901 | // One-char codes used for character types: | |
5902 | // L (L): Left-to-Right | |
5903 | // R (R): Right-to-Left | |
5904 | // r (AL): Right-to-Left Arabic | |
5905 | // 1 (EN): European Number | |
5906 | // + (ES): European Number Separator | |
5907 | // % (ET): European Number Terminator | |
5908 | // n (AN): Arabic Number | |
5909 | // , (CS): Common Number Separator | |
5910 | // m (NSM): Non-Spacing Mark | |
5911 | // b (BN): Boundary Neutral | |
5912 | // s (B): Paragraph Separator | |
5913 | // t (S): Segment Separator | |
5914 | // w (WS): Whitespace | |
5915 | // N (ON): Other Neutrals | |
5916 | ||
5917 | // Returns null if characters are ordered as they appear | |
5918 | // (left-to-right), or an array of sections ({from, to, level} | |
5919 | // objects) in the order in which they occur visually. | |
5920 | var bidiOrdering = (function() { | |
5921 | // Character types for codepoints 0 to 0xff | |
5922 | var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; | |
5923 | // Character types for codepoints 0x600 to 0x6ff | |
5924 | var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; | |
5925 | function charType(code) { | |
5926 | if (code <= 0xff) return lowTypes.charAt(code); | |
5927 | else if (0x590 <= code && code <= 0x5f4) return "R"; | |
5928 | else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); | |
5929 | else if (0x700 <= code && code <= 0x8ac) return "r"; | |
5930 | else return "L"; | |
5931 | } | |
5932 | ||
5933 | var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; | |
5934 | var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; | |
5935 | // Browsers seem to always treat the boundaries of block elements as being L. | |
5936 | var outerType = "L"; | |
5937 | ||
5938 | return function(str) { | |
5939 | if (!bidiRE.test(str)) return false; | |
5940 | var len = str.length, types = []; | |
5941 | for (var i = 0, type; i < len; ++i) | |
5942 | types.push(type = charType(str.charCodeAt(i))); | |
5943 | ||
5944 | // W1. Examine each non-spacing mark (NSM) in the level run, and | |
5945 | // change the type of the NSM to the type of the previous | |
5946 | // character. If the NSM is at the start of the level run, it will | |
5947 | // get the type of sor. | |
5948 | for (var i = 0, prev = outerType; i < len; ++i) { | |
5949 | var type = types[i]; | |
5950 | if (type == "m") types[i] = prev; | |
5951 | else prev = type; | |
5952 | } | |
5953 | ||
5954 | // W2. Search backwards from each instance of a European number | |
5955 | // until the first strong type (R, L, AL, or sor) is found. If an | |
5956 | // AL is found, change the type of the European number to Arabic | |
5957 | // number. | |
5958 | // W3. Change all ALs to R. | |
5959 | for (var i = 0, cur = outerType; i < len; ++i) { | |
5960 | var type = types[i]; | |
5961 | if (type == "1" && cur == "r") types[i] = "n"; | |
5962 | else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } | |
5963 | } | |
5964 | ||
5965 | // W4. A single European separator between two European numbers | |
5966 | // changes to a European number. A single common separator between | |
5967 | // two numbers of the same type changes to that type. | |
5968 | for (var i = 1, prev = types[0]; i < len - 1; ++i) { | |
5969 | var type = types[i]; | |
5970 | if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; | |
5971 | else if (type == "," && prev == types[i+1] && | |
5972 | (prev == "1" || prev == "n")) types[i] = prev; | |
5973 | prev = type; | |
5974 | } | |
5975 | ||
5976 | // W5. A sequence of European terminators adjacent to European | |
5977 | // numbers changes to all European numbers. | |
5978 | // W6. Otherwise, separators and terminators change to Other | |
5979 | // Neutral. | |
5980 | for (var i = 0; i < len; ++i) { | |
5981 | var type = types[i]; | |
5982 | if (type == ",") types[i] = "N"; | |
5983 | else if (type == "%") { | |
5984 | for (var end = i + 1; end < len && types[end] == "%"; ++end) {} | |
5985 | var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; | |
5986 | for (var j = i; j < end; ++j) types[j] = replace; | |
5987 | i = end - 1; | |
5988 | } | |
5989 | } | |
5990 | ||
5991 | // W7. Search backwards from each instance of a European number | |
5992 | // until the first strong type (R, L, or sor) is found. If an L is | |
5993 | // found, then change the type of the European number to L. | |
5994 | for (var i = 0, cur = outerType; i < len; ++i) { | |
5995 | var type = types[i]; | |
5996 | if (cur == "L" && type == "1") types[i] = "L"; | |
5997 | else if (isStrong.test(type)) cur = type; | |
5998 | } | |
5999 | ||
6000 | // N1. A sequence of neutrals takes the direction of the | |
6001 | // surrounding strong text if the text on both sides has the same | |
6002 | // direction. European and Arabic numbers act as if they were R in | |
6003 | // terms of their influence on neutrals. Start-of-level-run (sor) | |
6004 | // and end-of-level-run (eor) are used at level run boundaries. | |
6005 | // N2. Any remaining neutrals take the embedding direction. | |
6006 | for (var i = 0; i < len; ++i) { | |
6007 | if (isNeutral.test(types[i])) { | |
6008 | for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} | |
6009 | var before = (i ? types[i-1] : outerType) == "L"; | |
6010 | var after = (end < len ? types[end] : outerType) == "L"; | |
6011 | var replace = before || after ? "L" : "R"; | |
6012 | for (var j = i; j < end; ++j) types[j] = replace; | |
6013 | i = end - 1; | |
6014 | } | |
6015 | } | |
6016 | ||
6017 | // Here we depart from the documented algorithm, in order to avoid | |
6018 | // building up an actual levels array. Since there are only three | |
6019 | // levels (0, 1, 2) in an implementation that doesn't take | |
6020 | // explicit embedding into account, we can build up the order on | |
6021 | // the fly, without following the level-based algorithm. | |
6022 | var order = [], m; | |
6023 | for (var i = 0; i < len;) { | |
6024 | if (countsAsLeft.test(types[i])) { | |
6025 | var start = i; | |
6026 | for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} | |
6027 | order.push({from: start, to: i, level: 0}); | |
6028 | } else { | |
6029 | var pos = i, at = order.length; | |
6030 | for (++i; i < len && types[i] != "L"; ++i) {} | |
6031 | for (var j = pos; j < i;) { | |
6032 | if (countsAsNum.test(types[j])) { | |
6033 | if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); | |
6034 | var nstart = j; | |
6035 | for (++j; j < i && countsAsNum.test(types[j]); ++j) {} | |
6036 | order.splice(at, 0, {from: nstart, to: j, level: 2}); | |
6037 | pos = j; | |
6038 | } else ++j; | |
6039 | } | |
6040 | if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); | |
6041 | } | |
6042 | } | |
6043 | if (order[0].level == 1 && (m = str.match(/^\s+/))) { | |
6044 | order[0].from = m[0].length; | |
6045 | order.unshift({from: 0, to: m[0].length, level: 0}); | |
6046 | } | |
6047 | if (lst(order).level == 1 && (m = str.match(/\s+$/))) { | |
6048 | lst(order).to -= m[0].length; | |
6049 | order.push({from: len - m[0].length, to: len, level: 0}); | |
6050 | } | |
6051 | if (order[0].level != lst(order).level) | |
6052 | order.push({from: len, to: len, level: order[0].level}); | |
6053 | ||
6054 | return order; | |
6055 | }; | |
6056 | })(); | |
6057 | ||
6058 | // THE END | |
6059 | ||
6060 | CodeMirror.version = "3.21.1"; | |
6061 | ||
6062 | return CodeMirror; | |
6063 | })(); |