Line 0
Link Here
|
|
|
1 |
// CodeMirror version 3.14 |
2 |
// |
3 |
// CodeMirror is the only global var we claim |
4 |
window.CodeMirror = (function() { |
5 |
"use strict"; |
6 |
|
7 |
// BROWSER SNIFFING |
8 |
|
9 |
// Crude, but necessary to handle a number of hard-to-feature-detect |
10 |
// bugs and behavior differences. |
11 |
var gecko = /gecko\/\d/i.test(navigator.userAgent); |
12 |
var ie = /MSIE \d/.test(navigator.userAgent); |
13 |
var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8); |
14 |
var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9); |
15 |
var webkit = /WebKit\//.test(navigator.userAgent); |
16 |
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); |
17 |
var chrome = /Chrome\//.test(navigator.userAgent); |
18 |
var opera = /Opera\//.test(navigator.userAgent); |
19 |
var safari = /Apple Computer/.test(navigator.vendor); |
20 |
var khtml = /KHTML\//.test(navigator.userAgent); |
21 |
var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); |
22 |
var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); |
23 |
var phantom = /PhantomJS/.test(navigator.userAgent); |
24 |
|
25 |
var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); |
26 |
// This is woefully incomplete. Suggestions for alternative methods welcome. |
27 |
var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); |
28 |
var mac = ios || /Mac/.test(navigator.platform); |
29 |
var windows = /windows/i.test(navigator.platform); |
30 |
|
31 |
var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); |
32 |
if (opera_version) opera_version = Number(opera_version[1]); |
33 |
// Some browsers use the wrong event properties to signal cmd/ctrl on OS X |
34 |
var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); |
35 |
var captureMiddleClick = gecko || (ie && !ie_lt9); |
36 |
|
37 |
// Optimize some code when these features are not used |
38 |
var sawReadOnlySpans = false, sawCollapsedSpans = false; |
39 |
|
40 |
// CONSTRUCTOR |
41 |
|
42 |
function CodeMirror(place, options) { |
43 |
if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); |
44 |
|
45 |
this.options = options = options || {}; |
46 |
// Determine effective options based on given values and defaults. |
47 |
for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) |
48 |
options[opt] = defaults[opt]; |
49 |
setGuttersForLineNumbers(options); |
50 |
|
51 |
var docStart = typeof options.value == "string" ? 0 : options.value.first; |
52 |
var display = this.display = makeDisplay(place, docStart); |
53 |
display.wrapper.CodeMirror = this; |
54 |
updateGutters(this); |
55 |
if (options.autofocus && !mobile) focusInput(this); |
56 |
|
57 |
this.state = {keyMaps: [], |
58 |
overlays: [], |
59 |
modeGen: 0, |
60 |
overwrite: false, focused: false, |
61 |
suppressEdits: false, pasteIncoming: false, |
62 |
draggingText: false, |
63 |
highlight: new Delayed()}; |
64 |
|
65 |
themeChanged(this); |
66 |
if (options.lineWrapping) |
67 |
this.display.wrapper.className += " CodeMirror-wrap"; |
68 |
|
69 |
var doc = options.value; |
70 |
if (typeof doc == "string") doc = new Doc(options.value, options.mode); |
71 |
operation(this, attachDoc)(this, doc); |
72 |
|
73 |
// Override magic textarea content restore that IE sometimes does |
74 |
// on our hidden textarea on reload |
75 |
if (ie) setTimeout(bind(resetInput, this, true), 20); |
76 |
|
77 |
registerEventHandlers(this); |
78 |
// IE throws unspecified error in certain cases, when |
79 |
// trying to access activeElement before onload |
80 |
var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } |
81 |
if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); |
82 |
else onBlur(this); |
83 |
|
84 |
operation(this, function() { |
85 |
for (var opt in optionHandlers) |
86 |
if (optionHandlers.propertyIsEnumerable(opt)) |
87 |
optionHandlers[opt](this, options[opt], Init); |
88 |
for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); |
89 |
})(); |
90 |
} |
91 |
|
92 |
// DISPLAY CONSTRUCTOR |
93 |
|
94 |
function makeDisplay(place, docStart) { |
95 |
var d = {}; |
96 |
|
97 |
var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); |
98 |
if (webkit) input.style.width = "1000px"; |
99 |
else input.setAttribute("wrap", "off"); |
100 |
// if border: 0; -- iOS fails to open keyboard (issue #1287) |
101 |
if (ios) input.style.border = "1px solid black"; |
102 |
input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); |
103 |
|
104 |
// Wraps and hides input textarea |
105 |
d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); |
106 |
// The actual fake scrollbars. |
107 |
d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); |
108 |
d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); |
109 |
d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); |
110 |
d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); |
111 |
// DIVs containing the selection and the actual code |
112 |
d.lineDiv = elt("div", null, "CodeMirror-code"); |
113 |
d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); |
114 |
// Blinky cursor, and element used to ensure cursor fits at the end of a line |
115 |
d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); |
116 |
// Secondary cursor, shown when on a 'jump' in bi-directional text |
117 |
d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); |
118 |
// Used to measure text size |
119 |
d.measure = elt("div", null, "CodeMirror-measure"); |
120 |
// Wraps everything that needs to exist inside the vertically-padded coordinate system |
121 |
d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], |
122 |
null, "position: relative; outline: none"); |
123 |
// Moved around its parent to cover visible view |
124 |
d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); |
125 |
// Set to the height of the text, causes scrolling |
126 |
d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); |
127 |
// D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers |
128 |
d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); |
129 |
// Will contain the gutters, if any |
130 |
d.gutters = elt("div", null, "CodeMirror-gutters"); |
131 |
d.lineGutter = null; |
132 |
// Provides scrolling |
133 |
d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); |
134 |
d.scroller.setAttribute("tabIndex", "-1"); |
135 |
// The element in which the editor lives. |
136 |
d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, |
137 |
d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); |
138 |
// Work around IE7 z-index bug |
139 |
if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } |
140 |
if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); |
141 |
|
142 |
// Needed to hide big blue blinking cursor on Mobile Safari |
143 |
if (ios) input.style.width = "0px"; |
144 |
if (!webkit) d.scroller.draggable = true; |
145 |
// Needed to handle Tab key in KHTML |
146 |
if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } |
147 |
// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). |
148 |
else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; |
149 |
|
150 |
// Current visible range (may be bigger than the view window). |
151 |
d.viewOffset = d.lastSizeC = 0; |
152 |
d.showingFrom = d.showingTo = docStart; |
153 |
|
154 |
// Used to only resize the line number gutter when necessary (when |
155 |
// the amount of lines crosses a boundary that makes its width change) |
156 |
d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; |
157 |
// See readInput and resetInput |
158 |
d.prevInput = ""; |
159 |
// Set to true when a non-horizontal-scrolling widget is added. As |
160 |
// an optimization, widget aligning is skipped when d is false. |
161 |
d.alignWidgets = false; |
162 |
// Flag that indicates whether we currently expect input to appear |
163 |
// (after some event like 'keypress' or 'input') and are polling |
164 |
// intensively. |
165 |
d.pollingFast = false; |
166 |
// Self-resetting timeout for the poller |
167 |
d.poll = new Delayed(); |
168 |
|
169 |
d.cachedCharWidth = d.cachedTextHeight = null; |
170 |
d.measureLineCache = []; |
171 |
d.measureLineCachePos = 0; |
172 |
|
173 |
// Tracks when resetInput has punted to just putting a short |
174 |
// string instead of the (large) selection. |
175 |
d.inaccurateSelection = false; |
176 |
|
177 |
// Tracks the maximum line length so that the horizontal scrollbar |
178 |
// can be kept static when scrolling. |
179 |
d.maxLine = null; |
180 |
d.maxLineLength = 0; |
181 |
d.maxLineChanged = false; |
182 |
|
183 |
// Used for measuring wheel scrolling granularity |
184 |
d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; |
185 |
|
186 |
return d; |
187 |
} |
188 |
|
189 |
// STATE UPDATES |
190 |
|
191 |
// Used to get the editor into a consistent state again when options change. |
192 |
|
193 |
function loadMode(cm) { |
194 |
cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); |
195 |
cm.doc.iter(function(line) { |
196 |
if (line.stateAfter) line.stateAfter = null; |
197 |
if (line.styles) line.styles = null; |
198 |
}); |
199 |
cm.doc.frontier = cm.doc.first; |
200 |
startWorker(cm, 100); |
201 |
cm.state.modeGen++; |
202 |
if (cm.curOp) regChange(cm); |
203 |
} |
204 |
|
205 |
function wrappingChanged(cm) { |
206 |
if (cm.options.lineWrapping) { |
207 |
cm.display.wrapper.className += " CodeMirror-wrap"; |
208 |
cm.display.sizer.style.minWidth = ""; |
209 |
} else { |
210 |
cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); |
211 |
computeMaxLength(cm); |
212 |
} |
213 |
estimateLineHeights(cm); |
214 |
regChange(cm); |
215 |
clearCaches(cm); |
216 |
setTimeout(function(){updateScrollbars(cm);}, 100); |
217 |
} |
218 |
|
219 |
function estimateHeight(cm) { |
220 |
var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; |
221 |
var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); |
222 |
return function(line) { |
223 |
if (lineIsHidden(cm.doc, line)) |
224 |
return 0; |
225 |
else if (wrapping) |
226 |
return (Math.ceil(line.text.length / perLine) || 1) * th; |
227 |
else |
228 |
return th; |
229 |
}; |
230 |
} |
231 |
|
232 |
function estimateLineHeights(cm) { |
233 |
var doc = cm.doc, est = estimateHeight(cm); |
234 |
doc.iter(function(line) { |
235 |
var estHeight = est(line); |
236 |
if (estHeight != line.height) updateLineHeight(line, estHeight); |
237 |
}); |
238 |
} |
239 |
|
240 |
function keyMapChanged(cm) { |
241 |
var map = keyMap[cm.options.keyMap], style = map.style; |
242 |
cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + |
243 |
(style ? " cm-keymap-" + style : ""); |
244 |
cm.state.disableInput = map.disableInput; |
245 |
} |
246 |
|
247 |
function themeChanged(cm) { |
248 |
cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + |
249 |
cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); |
250 |
clearCaches(cm); |
251 |
} |
252 |
|
253 |
function guttersChanged(cm) { |
254 |
updateGutters(cm); |
255 |
regChange(cm); |
256 |
setTimeout(function(){alignHorizontally(cm);}, 20); |
257 |
} |
258 |
|
259 |
function updateGutters(cm) { |
260 |
var gutters = cm.display.gutters, specs = cm.options.gutters; |
261 |
removeChildren(gutters); |
262 |
for (var i = 0; i < specs.length; ++i) { |
263 |
var gutterClass = specs[i]; |
264 |
var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); |
265 |
if (gutterClass == "CodeMirror-linenumbers") { |
266 |
cm.display.lineGutter = gElt; |
267 |
gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; |
268 |
} |
269 |
} |
270 |
gutters.style.display = i ? "" : "none"; |
271 |
} |
272 |
|
273 |
function lineLength(doc, line) { |
274 |
if (line.height == 0) return 0; |
275 |
var len = line.text.length, merged, cur = line; |
276 |
while (merged = collapsedSpanAtStart(cur)) { |
277 |
var found = merged.find(); |
278 |
cur = getLine(doc, found.from.line); |
279 |
len += found.from.ch - found.to.ch; |
280 |
} |
281 |
cur = line; |
282 |
while (merged = collapsedSpanAtEnd(cur)) { |
283 |
var found = merged.find(); |
284 |
len -= cur.text.length - found.from.ch; |
285 |
cur = getLine(doc, found.to.line); |
286 |
len += cur.text.length - found.to.ch; |
287 |
} |
288 |
return len; |
289 |
} |
290 |
|
291 |
function computeMaxLength(cm) { |
292 |
var d = cm.display, doc = cm.doc; |
293 |
d.maxLine = getLine(doc, doc.first); |
294 |
d.maxLineLength = lineLength(doc, d.maxLine); |
295 |
d.maxLineChanged = true; |
296 |
doc.iter(function(line) { |
297 |
var len = lineLength(doc, line); |
298 |
if (len > d.maxLineLength) { |
299 |
d.maxLineLength = len; |
300 |
d.maxLine = line; |
301 |
} |
302 |
}); |
303 |
} |
304 |
|
305 |
// Make sure the gutters options contains the element |
306 |
// "CodeMirror-linenumbers" when the lineNumbers option is true. |
307 |
function setGuttersForLineNumbers(options) { |
308 |
var found = false; |
309 |
for (var i = 0; i < options.gutters.length; ++i) { |
310 |
if (options.gutters[i] == "CodeMirror-linenumbers") { |
311 |
if (options.lineNumbers) found = true; |
312 |
else options.gutters.splice(i--, 1); |
313 |
} |
314 |
} |
315 |
if (!found && options.lineNumbers) |
316 |
options.gutters.push("CodeMirror-linenumbers"); |
317 |
} |
318 |
|
319 |
// SCROLLBARS |
320 |
|
321 |
// Re-synchronize the fake scrollbars with the actual size of the |
322 |
// content. Optionally force a scrollTop. |
323 |
function updateScrollbars(cm) { |
324 |
var d = cm.display, docHeight = cm.doc.height; |
325 |
var totalHeight = docHeight + paddingVert(d); |
326 |
d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; |
327 |
d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; |
328 |
var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); |
329 |
var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1); |
330 |
var needsV = scrollHeight > (d.scroller.clientHeight + 1); |
331 |
if (needsV) { |
332 |
d.scrollbarV.style.display = "block"; |
333 |
d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; |
334 |
d.scrollbarV.firstChild.style.height = |
335 |
(scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; |
336 |
} else d.scrollbarV.style.display = ""; |
337 |
if (needsH) { |
338 |
d.scrollbarH.style.display = "block"; |
339 |
d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; |
340 |
d.scrollbarH.firstChild.style.width = |
341 |
(d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; |
342 |
} else d.scrollbarH.style.display = ""; |
343 |
if (needsH && needsV) { |
344 |
d.scrollbarFiller.style.display = "block"; |
345 |
d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; |
346 |
} else d.scrollbarFiller.style.display = ""; |
347 |
if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { |
348 |
d.gutterFiller.style.display = "block"; |
349 |
d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; |
350 |
d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; |
351 |
} else d.gutterFiller.style.display = ""; |
352 |
|
353 |
if (mac_geLion && scrollbarWidth(d.measure) === 0) |
354 |
d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; |
355 |
} |
356 |
|
357 |
function visibleLines(display, doc, viewPort) { |
358 |
var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; |
359 |
if (typeof viewPort == "number") top = viewPort; |
360 |
else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} |
361 |
top = Math.floor(top - paddingTop(display)); |
362 |
var bottom = Math.ceil(top + height); |
363 |
return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; |
364 |
} |
365 |
|
366 |
// LINE NUMBERS |
367 |
|
368 |
function alignHorizontally(cm) { |
369 |
var display = cm.display; |
370 |
if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; |
371 |
var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; |
372 |
var gutterW = display.gutters.offsetWidth, l = comp + "px"; |
373 |
for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) { |
374 |
for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l; |
375 |
} |
376 |
if (cm.options.fixedGutter) |
377 |
display.gutters.style.left = (comp + gutterW) + "px"; |
378 |
} |
379 |
|
380 |
function maybeUpdateLineNumberWidth(cm) { |
381 |
if (!cm.options.lineNumbers) return false; |
382 |
var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; |
383 |
if (last.length != display.lineNumChars) { |
384 |
var test = display.measure.appendChild(elt("div", [elt("div", last)], |
385 |
"CodeMirror-linenumber CodeMirror-gutter-elt")); |
386 |
var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; |
387 |
display.lineGutter.style.width = ""; |
388 |
display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding); |
389 |
display.lineNumWidth = display.lineNumInnerWidth + padding; |
390 |
display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; |
391 |
display.lineGutter.style.width = display.lineNumWidth + "px"; |
392 |
return true; |
393 |
} |
394 |
return false; |
395 |
} |
396 |
|
397 |
function lineNumberFor(options, i) { |
398 |
return String(options.lineNumberFormatter(i + options.firstLineNumber)); |
399 |
} |
400 |
function compensateForHScroll(display) { |
401 |
return getRect(display.scroller).left - getRect(display.sizer).left; |
402 |
} |
403 |
|
404 |
// DISPLAY DRAWING |
405 |
|
406 |
function updateDisplay(cm, changes, viewPort) { |
407 |
var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; |
408 |
var visible = visibleLines(cm.display, cm.doc, viewPort); |
409 |
for (;;) { |
410 |
if (!updateDisplayInner(cm, changes, visible)) break; |
411 |
updated = true; |
412 |
updateSelection(cm); |
413 |
updateScrollbars(cm); |
414 |
|
415 |
// Clip forced viewport to actual scrollable area |
416 |
if (viewPort) |
417 |
viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, |
418 |
typeof viewPort == "number" ? viewPort : viewPort.top); |
419 |
visible = visibleLines(cm.display, cm.doc, viewPort); |
420 |
if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) |
421 |
break; |
422 |
changes = []; |
423 |
} |
424 |
|
425 |
if (updated) { |
426 |
signalLater(cm, "update", cm); |
427 |
if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) |
428 |
signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); |
429 |
} |
430 |
return updated; |
431 |
} |
432 |
|
433 |
// Uses a set of changes plus the current scroll position to |
434 |
// determine which DOM updates have to be made, and makes the |
435 |
// updates. |
436 |
function updateDisplayInner(cm, changes, visible) { |
437 |
var display = cm.display, doc = cm.doc; |
438 |
if (!display.wrapper.clientWidth) { |
439 |
display.showingFrom = display.showingTo = doc.first; |
440 |
display.viewOffset = 0; |
441 |
return; |
442 |
} |
443 |
|
444 |
// Bail out if the visible area is already rendered and nothing changed. |
445 |
if (changes.length == 0 && |
446 |
visible.from > display.showingFrom && visible.to < display.showingTo) |
447 |
return; |
448 |
|
449 |
if (maybeUpdateLineNumberWidth(cm)) |
450 |
changes = [{from: doc.first, to: doc.first + doc.size}]; |
451 |
var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px"; |
452 |
display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0"; |
453 |
|
454 |
// Used to determine which lines need their line numbers updated |
455 |
var positionsChangedFrom = Infinity; |
456 |
if (cm.options.lineNumbers) |
457 |
for (var i = 0; i < changes.length; ++i) |
458 |
if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; } |
459 |
|
460 |
var end = doc.first + doc.size; |
461 |
var from = Math.max(visible.from - cm.options.viewportMargin, doc.first); |
462 |
var to = Math.min(end, visible.to + cm.options.viewportMargin); |
463 |
if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom); |
464 |
if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo); |
465 |
if (sawCollapsedSpans) { |
466 |
from = lineNo(visualLine(doc, getLine(doc, from))); |
467 |
while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to; |
468 |
} |
469 |
|
470 |
// Create a range of theoretically intact lines, and punch holes |
471 |
// in that using the change info. |
472 |
var intact = [{from: Math.max(display.showingFrom, doc.first), |
473 |
to: Math.min(display.showingTo, end)}]; |
474 |
if (intact[0].from >= intact[0].to) intact = []; |
475 |
else intact = computeIntact(intact, changes); |
476 |
// When merged lines are present, we might have to reduce the |
477 |
// intact ranges because changes in continued fragments of the |
478 |
// intact lines do require the lines to be redrawn. |
479 |
if (sawCollapsedSpans) |
480 |
for (var i = 0; i < intact.length; ++i) { |
481 |
var range = intact[i], merged; |
482 |
while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) { |
483 |
var newTo = merged.find().from.line; |
484 |
if (newTo > range.from) range.to = newTo; |
485 |
else { intact.splice(i--, 1); break; } |
486 |
} |
487 |
} |
488 |
|
489 |
// Clip off the parts that won't be visible |
490 |
var intactLines = 0; |
491 |
for (var i = 0; i < intact.length; ++i) { |
492 |
var range = intact[i]; |
493 |
if (range.from < from) range.from = from; |
494 |
if (range.to > to) range.to = to; |
495 |
if (range.from >= range.to) intact.splice(i--, 1); |
496 |
else intactLines += range.to - range.from; |
497 |
} |
498 |
if (intactLines == to - from && from == display.showingFrom && to == display.showingTo) { |
499 |
updateViewOffset(cm); |
500 |
return; |
501 |
} |
502 |
intact.sort(function(a, b) {return a.from - b.from;}); |
503 |
|
504 |
// Avoid crashing on IE's "unspecified error" when in iframes |
505 |
try { |
506 |
var focused = document.activeElement; |
507 |
} catch(e) {} |
508 |
if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; |
509 |
patchDisplay(cm, from, to, intact, positionsChangedFrom); |
510 |
display.lineDiv.style.display = ""; |
511 |
if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus(); |
512 |
|
513 |
var different = from != display.showingFrom || to != display.showingTo || |
514 |
display.lastSizeC != display.wrapper.clientHeight; |
515 |
// This is just a bogus formula that detects when the editor is |
516 |
// resized or the font size changes. |
517 |
if (different) { |
518 |
display.lastSizeC = display.wrapper.clientHeight; |
519 |
startWorker(cm, 400); |
520 |
} |
521 |
display.showingFrom = from; display.showingTo = to; |
522 |
|
523 |
var prevBottom = display.lineDiv.offsetTop; |
524 |
for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { |
525 |
if (ie_lt8) { |
526 |
var bot = node.offsetTop + node.offsetHeight; |
527 |
height = bot - prevBottom; |
528 |
prevBottom = bot; |
529 |
} else { |
530 |
var box = getRect(node); |
531 |
height = box.bottom - box.top; |
532 |
} |
533 |
var diff = node.lineObj.height - height; |
534 |
if (height < 2) height = textHeight(display); |
535 |
if (diff > .001 || diff < -.001) { |
536 |
updateLineHeight(node.lineObj, height); |
537 |
var widgets = node.lineObj.widgets; |
538 |
if (widgets) for (var i = 0; i < widgets.length; ++i) |
539 |
widgets[i].height = widgets[i].node.offsetHeight; |
540 |
} |
541 |
} |
542 |
updateViewOffset(cm); |
543 |
|
544 |
return true; |
545 |
} |
546 |
|
547 |
function updateViewOffset(cm) { |
548 |
var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom)); |
549 |
// Position the mover div to align with the current virtual scroll position |
550 |
cm.display.mover.style.top = off + "px"; |
551 |
} |
552 |
|
553 |
function computeIntact(intact, changes) { |
554 |
for (var i = 0, l = changes.length || 0; i < l; ++i) { |
555 |
var change = changes[i], intact2 = [], diff = change.diff || 0; |
556 |
for (var j = 0, l2 = intact.length; j < l2; ++j) { |
557 |
var range = intact[j]; |
558 |
if (change.to <= range.from && change.diff) { |
559 |
intact2.push({from: range.from + diff, to: range.to + diff}); |
560 |
} else if (change.to <= range.from || change.from >= range.to) { |
561 |
intact2.push(range); |
562 |
} else { |
563 |
if (change.from > range.from) |
564 |
intact2.push({from: range.from, to: change.from}); |
565 |
if (change.to < range.to) |
566 |
intact2.push({from: change.to + diff, to: range.to + diff}); |
567 |
} |
568 |
} |
569 |
intact = intact2; |
570 |
} |
571 |
return intact; |
572 |
} |
573 |
|
574 |
function getDimensions(cm) { |
575 |
var d = cm.display, left = {}, width = {}; |
576 |
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { |
577 |
left[cm.options.gutters[i]] = n.offsetLeft; |
578 |
width[cm.options.gutters[i]] = n.offsetWidth; |
579 |
} |
580 |
return {fixedPos: compensateForHScroll(d), |
581 |
gutterTotalWidth: d.gutters.offsetWidth, |
582 |
gutterLeft: left, |
583 |
gutterWidth: width, |
584 |
wrapperWidth: d.wrapper.clientWidth}; |
585 |
} |
586 |
|
587 |
function patchDisplay(cm, from, to, intact, updateNumbersFrom) { |
588 |
var dims = getDimensions(cm); |
589 |
var display = cm.display, lineNumbers = cm.options.lineNumbers; |
590 |
if (!intact.length && (!webkit || !cm.display.currentWheelTarget)) |
591 |
removeChildren(display.lineDiv); |
592 |
var container = display.lineDiv, cur = container.firstChild; |
593 |
|
594 |
function rm(node) { |
595 |
var next = node.nextSibling; |
596 |
if (webkit && mac && cm.display.currentWheelTarget == node) { |
597 |
node.style.display = "none"; |
598 |
node.lineObj = null; |
599 |
} else { |
600 |
node.parentNode.removeChild(node); |
601 |
} |
602 |
return next; |
603 |
} |
604 |
|
605 |
var nextIntact = intact.shift(), lineN = from; |
606 |
cm.doc.iter(from, to, function(line) { |
607 |
if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift(); |
608 |
if (lineIsHidden(cm.doc, line)) { |
609 |
if (line.height != 0) updateLineHeight(line, 0); |
610 |
if (line.widgets && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) { |
611 |
var w = line.widgets[i]; |
612 |
if (w.showIfHidden) { |
613 |
var prev = cur.previousSibling; |
614 |
if (/pre/i.test(prev.nodeName)) { |
615 |
var wrap = elt("div", null, null, "position: relative"); |
616 |
prev.parentNode.replaceChild(wrap, prev); |
617 |
wrap.appendChild(prev); |
618 |
prev = wrap; |
619 |
} |
620 |
var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget")); |
621 |
if (!w.handleMouseEvents) wnode.ignoreEvents = true; |
622 |
positionLineWidget(w, wnode, prev, dims); |
623 |
} |
624 |
} |
625 |
} else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) { |
626 |
// This line is intact. Skip to the actual node. Update its |
627 |
// line number if needed. |
628 |
while (cur.lineObj != line) cur = rm(cur); |
629 |
if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber) |
630 |
setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN)); |
631 |
cur = cur.nextSibling; |
632 |
} else { |
633 |
// For lines with widgets, make an attempt to find and reuse |
634 |
// the existing element, so that widgets aren't needlessly |
635 |
// removed and re-inserted into the dom |
636 |
if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling) |
637 |
if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; } |
638 |
// This line needs to be generated. |
639 |
var lineNode = buildLineElement(cm, line, lineN, dims, reuse); |
640 |
if (lineNode != reuse) { |
641 |
container.insertBefore(lineNode, cur); |
642 |
} else { |
643 |
while (cur != reuse) cur = rm(cur); |
644 |
cur = cur.nextSibling; |
645 |
} |
646 |
|
647 |
lineNode.lineObj = line; |
648 |
} |
649 |
++lineN; |
650 |
}); |
651 |
while (cur) cur = rm(cur); |
652 |
} |
653 |
|
654 |
function buildLineElement(cm, line, lineNo, dims, reuse) { |
655 |
var lineElement = lineContent(cm, line); |
656 |
var markers = line.gutterMarkers, display = cm.display, wrap; |
657 |
|
658 |
if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && !line.widgets) |
659 |
return lineElement; |
660 |
|
661 |
// Lines with gutter elements, widgets or a background class need |
662 |
// to be wrapped again, and have the extra elements added to the |
663 |
// wrapper div |
664 |
|
665 |
if (reuse) { |
666 |
reuse.alignable = null; |
667 |
var isOk = true, widgetsSeen = 0, insertBefore = null; |
668 |
for (var n = reuse.firstChild, next; n; n = next) { |
669 |
next = n.nextSibling; |
670 |
if (!/\bCodeMirror-linewidget\b/.test(n.className)) { |
671 |
reuse.removeChild(n); |
672 |
} else { |
673 |
for (var i = 0, first = true; i < line.widgets.length; ++i) { |
674 |
var widget = line.widgets[i]; |
675 |
if (!widget.above) { insertBefore = n; first = false; } |
676 |
if (widget.node == n.firstChild) { |
677 |
positionLineWidget(widget, n, reuse, dims); |
678 |
++widgetsSeen; |
679 |
break; |
680 |
} |
681 |
} |
682 |
if (i == line.widgets.length) { isOk = false; break; } |
683 |
} |
684 |
} |
685 |
reuse.insertBefore(lineElement, insertBefore); |
686 |
if (isOk && widgetsSeen == line.widgets.length) { |
687 |
wrap = reuse; |
688 |
reuse.className = line.wrapClass || ""; |
689 |
} |
690 |
} |
691 |
if (!wrap) { |
692 |
wrap = elt("div", null, line.wrapClass, "position: relative"); |
693 |
wrap.appendChild(lineElement); |
694 |
} |
695 |
// Kludge to make sure the styled element lies behind the selection (by z-index) |
696 |
if (line.bgClass) |
697 |
wrap.insertBefore(elt("div", null, line.bgClass + " CodeMirror-linebackground"), wrap.firstChild); |
698 |
if (cm.options.lineNumbers || markers) { |
699 |
var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " + |
700 |
(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"), |
701 |
wrap.firstChild); |
702 |
if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap); |
703 |
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) |
704 |
wrap.lineNumber = gutterWrap.appendChild( |
705 |
elt("div", lineNumberFor(cm.options, lineNo), |
706 |
"CodeMirror-linenumber CodeMirror-gutter-elt", |
707 |
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " |
708 |
+ display.lineNumInnerWidth + "px")); |
709 |
if (markers) |
710 |
for (var k = 0; k < cm.options.gutters.length; ++k) { |
711 |
var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; |
712 |
if (found) |
713 |
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + |
714 |
dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); |
715 |
} |
716 |
} |
717 |
if (ie_lt8) wrap.style.zIndex = 2; |
718 |
if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) { |
719 |
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); |
720 |
if (!widget.handleMouseEvents) node.ignoreEvents = true; |
721 |
positionLineWidget(widget, node, wrap, dims); |
722 |
if (widget.above) |
723 |
wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); |
724 |
else |
725 |
wrap.appendChild(node); |
726 |
signalLater(widget, "redraw"); |
727 |
} |
728 |
return wrap; |
729 |
} |
730 |
|
731 |
function positionLineWidget(widget, node, wrap, dims) { |
732 |
if (widget.noHScroll) { |
733 |
(wrap.alignable || (wrap.alignable = [])).push(node); |
734 |
var width = dims.wrapperWidth; |
735 |
node.style.left = dims.fixedPos + "px"; |
736 |
if (!widget.coverGutter) { |
737 |
width -= dims.gutterTotalWidth; |
738 |
node.style.paddingLeft = dims.gutterTotalWidth + "px"; |
739 |
} |
740 |
node.style.width = width + "px"; |
741 |
} |
742 |
if (widget.coverGutter) { |
743 |
node.style.zIndex = 5; |
744 |
node.style.position = "relative"; |
745 |
if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; |
746 |
} |
747 |
} |
748 |
|
749 |
// SELECTION / CURSOR |
750 |
|
751 |
function updateSelection(cm) { |
752 |
var display = cm.display; |
753 |
var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); |
754 |
if (collapsed || cm.options.showCursorWhenSelecting) |
755 |
updateSelectionCursor(cm); |
756 |
else |
757 |
display.cursor.style.display = display.otherCursor.style.display = "none"; |
758 |
if (!collapsed) |
759 |
updateSelectionRange(cm); |
760 |
else |
761 |
display.selectionDiv.style.display = "none"; |
762 |
|
763 |
// Move the hidden textarea near the cursor to prevent scrolling artifacts |
764 |
if (cm.options.moveInputWithCursor) { |
765 |
var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); |
766 |
var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); |
767 |
display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, |
768 |
headPos.top + lineOff.top - wrapOff.top)) + "px"; |
769 |
display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, |
770 |
headPos.left + lineOff.left - wrapOff.left)) + "px"; |
771 |
} |
772 |
} |
773 |
|
774 |
// No selection, plain cursor |
775 |
function updateSelectionCursor(cm) { |
776 |
var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); |
777 |
display.cursor.style.left = pos.left + "px"; |
778 |
display.cursor.style.top = pos.top + "px"; |
779 |
display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; |
780 |
display.cursor.style.display = ""; |
781 |
|
782 |
if (pos.other) { |
783 |
display.otherCursor.style.display = ""; |
784 |
display.otherCursor.style.left = pos.other.left + "px"; |
785 |
display.otherCursor.style.top = pos.other.top + "px"; |
786 |
display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; |
787 |
} else { display.otherCursor.style.display = "none"; } |
788 |
} |
789 |
|
790 |
// Highlight selection |
791 |
function updateSelectionRange(cm) { |
792 |
var display = cm.display, doc = cm.doc, sel = cm.doc.sel; |
793 |
var fragment = document.createDocumentFragment(); |
794 |
var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); |
795 |
|
796 |
function add(left, top, width, bottom) { |
797 |
if (top < 0) top = 0; |
798 |
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + |
799 |
"px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + |
800 |
"px; height: " + (bottom - top) + "px")); |
801 |
} |
802 |
|
803 |
function drawForLine(line, fromArg, toArg) { |
804 |
var lineObj = getLine(doc, line); |
805 |
var lineLen = lineObj.text.length; |
806 |
var start, end; |
807 |
function coords(ch, bias) { |
808 |
return charCoords(cm, Pos(line, ch), "div", lineObj, bias); |
809 |
} |
810 |
|
811 |
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { |
812 |
var leftPos = coords(from, "left"), rightPos, left, right; |
813 |
if (from == to) { |
814 |
rightPos = leftPos; |
815 |
left = right = leftPos.left; |
816 |
} else { |
817 |
rightPos = coords(to - 1, "right"); |
818 |
if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } |
819 |
left = leftPos.left; |
820 |
right = rightPos.right; |
821 |
} |
822 |
if (fromArg == null && from == 0) left = pl; |
823 |
if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part |
824 |
add(left, leftPos.top, null, leftPos.bottom); |
825 |
left = pl; |
826 |
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); |
827 |
} |
828 |
if (toArg == null && to == lineLen) right = clientWidth; |
829 |
if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) |
830 |
start = leftPos; |
831 |
if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) |
832 |
end = rightPos; |
833 |
if (left < pl + 1) left = pl; |
834 |
add(left, rightPos.top, right - left, rightPos.bottom); |
835 |
}); |
836 |
return {start: start, end: end}; |
837 |
} |
838 |
|
839 |
if (sel.from.line == sel.to.line) { |
840 |
drawForLine(sel.from.line, sel.from.ch, sel.to.ch); |
841 |
} else { |
842 |
var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line); |
843 |
var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine); |
844 |
var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end; |
845 |
var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start; |
846 |
if (singleVLine) { |
847 |
if (leftEnd.top < rightStart.top - 2) { |
848 |
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); |
849 |
add(pl, rightStart.top, rightStart.left, rightStart.bottom); |
850 |
} else { |
851 |
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); |
852 |
} |
853 |
} |
854 |
if (leftEnd.bottom < rightStart.top) |
855 |
add(pl, leftEnd.bottom, null, rightStart.top); |
856 |
} |
857 |
|
858 |
removeChildrenAndAdd(display.selectionDiv, fragment); |
859 |
display.selectionDiv.style.display = ""; |
860 |
} |
861 |
|
862 |
// Cursor-blinking |
863 |
function restartBlink(cm) { |
864 |
if (!cm.state.focused) return; |
865 |
var display = cm.display; |
866 |
clearInterval(display.blinker); |
867 |
var on = true; |
868 |
display.cursor.style.visibility = display.otherCursor.style.visibility = ""; |
869 |
display.blinker = setInterval(function() { |
870 |
display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; |
871 |
}, cm.options.cursorBlinkRate); |
872 |
} |
873 |
|
874 |
// HIGHLIGHT WORKER |
875 |
|
876 |
function startWorker(cm, time) { |
877 |
if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) |
878 |
cm.state.highlight.set(time, bind(highlightWorker, cm)); |
879 |
} |
880 |
|
881 |
function highlightWorker(cm) { |
882 |
var doc = cm.doc; |
883 |
if (doc.frontier < doc.first) doc.frontier = doc.first; |
884 |
if (doc.frontier >= cm.display.showingTo) return; |
885 |
var end = +new Date + cm.options.workTime; |
886 |
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); |
887 |
var changed = [], prevChange; |
888 |
doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { |
889 |
if (doc.frontier >= cm.display.showingFrom) { // Visible |
890 |
var oldStyles = line.styles; |
891 |
line.styles = highlightLine(cm, line, state); |
892 |
var ischange = !oldStyles || oldStyles.length != line.styles.length; |
893 |
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; |
894 |
if (ischange) { |
895 |
if (prevChange && prevChange.end == doc.frontier) prevChange.end++; |
896 |
else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1}); |
897 |
} |
898 |
line.stateAfter = copyState(doc.mode, state); |
899 |
} else { |
900 |
processLine(cm, line, state); |
901 |
line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; |
902 |
} |
903 |
++doc.frontier; |
904 |
if (+new Date > end) { |
905 |
startWorker(cm, cm.options.workDelay); |
906 |
return true; |
907 |
} |
908 |
}); |
909 |
if (changed.length) |
910 |
operation(cm, function() { |
911 |
for (var i = 0; i < changed.length; ++i) |
912 |
regChange(this, changed[i].start, changed[i].end); |
913 |
})(); |
914 |
} |
915 |
|
916 |
// Finds the line to start with when starting a parse. Tries to |
917 |
// find a line with a stateAfter, so that it can start with a |
918 |
// valid state. If that fails, it returns the line with the |
919 |
// smallest indentation, which tends to need the least context to |
920 |
// parse correctly. |
921 |
function findStartLine(cm, n, precise) { |
922 |
var minindent, minline, doc = cm.doc; |
923 |
for (var search = n, lim = n - 100; search > lim; --search) { |
924 |
if (search <= doc.first) return doc.first; |
925 |
var line = getLine(doc, search - 1); |
926 |
if (line.stateAfter && (!precise || search <= doc.frontier)) return search; |
927 |
var indented = countColumn(line.text, null, cm.options.tabSize); |
928 |
if (minline == null || minindent > indented) { |
929 |
minline = search - 1; |
930 |
minindent = indented; |
931 |
} |
932 |
} |
933 |
return minline; |
934 |
} |
935 |
|
936 |
function getStateBefore(cm, n, precise) { |
937 |
var doc = cm.doc, display = cm.display; |
938 |
if (!doc.mode.startState) return true; |
939 |
var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; |
940 |
if (!state) state = startState(doc.mode); |
941 |
else state = copyState(doc.mode, state); |
942 |
doc.iter(pos, n, function(line) { |
943 |
processLine(cm, line, state); |
944 |
var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; |
945 |
line.stateAfter = save ? copyState(doc.mode, state) : null; |
946 |
++pos; |
947 |
}); |
948 |
return state; |
949 |
} |
950 |
|
951 |
// POSITION MEASUREMENT |
952 |
|
953 |
function paddingTop(display) {return display.lineSpace.offsetTop;} |
954 |
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} |
955 |
function paddingLeft(display) { |
956 |
var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); |
957 |
return e.offsetLeft; |
958 |
} |
959 |
|
960 |
function measureChar(cm, line, ch, data, bias) { |
961 |
var dir = -1; |
962 |
data = data || measureLine(cm, line); |
963 |
|
964 |
for (var pos = ch;; pos += dir) { |
965 |
var r = data[pos]; |
966 |
if (r) break; |
967 |
if (dir < 0 && pos == 0) dir = 1; |
968 |
} |
969 |
var rightV = (pos < ch || bias == "right") && r.topRight != null; |
970 |
return {left: pos < ch ? r.right : r.left, |
971 |
right: pos > ch ? r.left : r.right, |
972 |
top: rightV ? r.topRight : r.top, |
973 |
bottom: rightV ? r.bottomRight : r.bottom}; |
974 |
} |
975 |
|
976 |
function findCachedMeasurement(cm, line) { |
977 |
var cache = cm.display.measureLineCache; |
978 |
for (var i = 0; i < cache.length; ++i) { |
979 |
var memo = cache[i]; |
980 |
if (memo.text == line.text && memo.markedSpans == line.markedSpans && |
981 |
cm.display.scroller.clientWidth == memo.width && |
982 |
memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass) |
983 |
return memo; |
984 |
} |
985 |
} |
986 |
|
987 |
function clearCachedMeasurement(cm, line) { |
988 |
var exists = findCachedMeasurement(cm, line); |
989 |
if (exists) exists.text = exists.measure = exists.markedSpans = null; |
990 |
} |
991 |
|
992 |
function measureLine(cm, line) { |
993 |
// First look in the cache |
994 |
var cached = findCachedMeasurement(cm, line); |
995 |
if (cached) return cached.measure; |
996 |
|
997 |
// Failing that, recompute and store result in cache |
998 |
var measure = measureLineInner(cm, line); |
999 |
var cache = cm.display.measureLineCache; |
1000 |
var memo = {text: line.text, width: cm.display.scroller.clientWidth, |
1001 |
markedSpans: line.markedSpans, measure: measure, |
1002 |
classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass}; |
1003 |
if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo; |
1004 |
else cache.push(memo); |
1005 |
return measure; |
1006 |
} |
1007 |
|
1008 |
function measureLineInner(cm, line) { |
1009 |
var display = cm.display, measure = emptyArray(line.text.length); |
1010 |
var pre = lineContent(cm, line, measure); |
1011 |
|
1012 |
// IE does not cache element positions of inline elements between |
1013 |
// calls to getBoundingClientRect. This makes the loop below, |
1014 |
// which gathers the positions of all the characters on the line, |
1015 |
// do an amount of layout work quadratic to the number of |
1016 |
// characters. When line wrapping is off, we try to improve things |
1017 |
// by first subdividing the line into a bunch of inline blocks, so |
1018 |
// that IE can reuse most of the layout information from caches |
1019 |
// for those blocks. This does interfere with line wrapping, so it |
1020 |
// doesn't work when wrapping is on, but in that case the |
1021 |
// situation is slightly better, since IE does cache line-wrapping |
1022 |
// information and only recomputes per-line. |
1023 |
if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { |
1024 |
var fragment = document.createDocumentFragment(); |
1025 |
var chunk = 10, n = pre.childNodes.length; |
1026 |
for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { |
1027 |
var wrap = elt("div", null, null, "display: inline-block"); |
1028 |
for (var j = 0; j < chunk && n; ++j) { |
1029 |
wrap.appendChild(pre.firstChild); |
1030 |
--n; |
1031 |
} |
1032 |
fragment.appendChild(wrap); |
1033 |
} |
1034 |
pre.appendChild(fragment); |
1035 |
} |
1036 |
|
1037 |
removeChildrenAndAdd(display.measure, pre); |
1038 |
|
1039 |
var outer = getRect(display.lineDiv); |
1040 |
var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; |
1041 |
// Work around an IE7/8 bug where it will sometimes have randomly |
1042 |
// replaced our pre with a clone at this point. |
1043 |
if (ie_lt9 && display.measure.first != pre) |
1044 |
removeChildrenAndAdd(display.measure, pre); |
1045 |
|
1046 |
function categorizeVSpan(top, bot) { |
1047 |
if (bot > maxBot) bot = maxBot; |
1048 |
if (top < 0) top = 0; |
1049 |
for (var j = 0; j < vranges.length; j += 2) { |
1050 |
var rtop = vranges[j], rbot = vranges[j+1]; |
1051 |
if (rtop > bot || rbot < top) continue; |
1052 |
if (rtop <= top && rbot >= bot || |
1053 |
top <= rtop && bot >= rbot || |
1054 |
Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { |
1055 |
vranges[j] = Math.min(top, rtop); |
1056 |
vranges[j+1] = Math.max(bot, rbot); |
1057 |
return j; |
1058 |
} |
1059 |
} |
1060 |
vranges.push(top, bot); |
1061 |
return j; |
1062 |
} |
1063 |
|
1064 |
for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { |
1065 |
var size, node = cur; |
1066 |
// A widget might wrap, needs special care |
1067 |
if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) { |
1068 |
if (cur.firstChild.nodeType == 1) node = cur.firstChild; |
1069 |
var rects = node.getClientRects(), rLeft = rects[0], rRight = rects[rects.length - 1]; |
1070 |
if (rects.length > 1) { |
1071 |
var vCatLeft = categorizeVSpan(rLeft.top - outer.top, rLeft.bottom - outer.top); |
1072 |
var vCatRight = categorizeVSpan(rRight.top - outer.top, rRight.bottom - outer.top); |
1073 |
data[i] = {left: rLeft.left - outer.left, right: rRight.right - outer.left, |
1074 |
top: vCatLeft, topRight: vCatRight}; |
1075 |
continue; |
1076 |
} |
1077 |
} |
1078 |
size = getRect(node); |
1079 |
var vCat = categorizeVSpan(size.top - outer.top, size.bottom - outer.top); |
1080 |
var right = size.right; |
1081 |
if (cur.measureRight) right = getRect(cur.measureRight).left; |
1082 |
data[i] = {left: size.left - outer.left, right: right - outer.left, top: vCat}; |
1083 |
} |
1084 |
for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { |
1085 |
var vr = cur.top, vrRight = cur.topRight; |
1086 |
cur.top = vranges[vr]; cur.bottom = vranges[vr+1]; |
1087 |
if (vrRight != null) { cur.topRight = vranges[vrRight]; cur.bottomRight = vranges[vrRight+1]; } |
1088 |
} |
1089 |
return data; |
1090 |
} |
1091 |
|
1092 |
function measureLineWidth(cm, line) { |
1093 |
var hasBadSpan = false; |
1094 |
if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) { |
1095 |
var sp = line.markedSpans[i]; |
1096 |
if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true; |
1097 |
} |
1098 |
var cached = !hasBadSpan && findCachedMeasurement(cm, line); |
1099 |
if (cached) return measureChar(cm, line, line.text.length, cached.measure, "right").right; |
1100 |
|
1101 |
var pre = lineContent(cm, line); |
1102 |
var end = pre.appendChild(zeroWidthElement(cm.display.measure)); |
1103 |
removeChildrenAndAdd(cm.display.measure, pre); |
1104 |
return getRect(end).right - getRect(cm.display.lineDiv).left; |
1105 |
} |
1106 |
|
1107 |
function clearCaches(cm) { |
1108 |
cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; |
1109 |
cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; |
1110 |
if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; |
1111 |
cm.display.lineNumChars = null; |
1112 |
} |
1113 |
|
1114 |
function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } |
1115 |
function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } |
1116 |
|
1117 |
// Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page" |
1118 |
function intoCoordSystem(cm, lineObj, rect, context) { |
1119 |
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { |
1120 |
var size = widgetHeight(lineObj.widgets[i]); |
1121 |
rect.top += size; rect.bottom += size; |
1122 |
} |
1123 |
if (context == "line") return rect; |
1124 |
if (!context) context = "local"; |
1125 |
var yOff = heightAtLine(cm, lineObj); |
1126 |
if (context == "local") yOff += paddingTop(cm.display); |
1127 |
else yOff -= cm.display.viewOffset; |
1128 |
if (context == "page" || context == "window") { |
1129 |
var lOff = getRect(cm.display.lineSpace); |
1130 |
yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); |
1131 |
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); |
1132 |
rect.left += xOff; rect.right += xOff; |
1133 |
} |
1134 |
rect.top += yOff; rect.bottom += yOff; |
1135 |
return rect; |
1136 |
} |
1137 |
|
1138 |
// Context may be "window", "page", "div", or "local"/null |
1139 |
// Result is in "div" coords |
1140 |
function fromCoordSystem(cm, coords, context) { |
1141 |
if (context == "div") return coords; |
1142 |
var left = coords.left, top = coords.top; |
1143 |
// First move into "page" coordinate system |
1144 |
if (context == "page") { |
1145 |
left -= pageScrollX(); |
1146 |
top -= pageScrollY(); |
1147 |
} else if (context == "local" || !context) { |
1148 |
var localBox = getRect(cm.display.sizer); |
1149 |
left += localBox.left; |
1150 |
top += localBox.top; |
1151 |
} |
1152 |
|
1153 |
var lineSpaceBox = getRect(cm.display.lineSpace); |
1154 |
return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; |
1155 |
} |
1156 |
|
1157 |
function charCoords(cm, pos, context, lineObj, bias) { |
1158 |
if (!lineObj) lineObj = getLine(cm.doc, pos.line); |
1159 |
return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context); |
1160 |
} |
1161 |
|
1162 |
function cursorCoords(cm, pos, context, lineObj, measurement) { |
1163 |
lineObj = lineObj || getLine(cm.doc, pos.line); |
1164 |
if (!measurement) measurement = measureLine(cm, lineObj); |
1165 |
function get(ch, right) { |
1166 |
var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left"); |
1167 |
if (right) m.left = m.right; else m.right = m.left; |
1168 |
return intoCoordSystem(cm, lineObj, m, context); |
1169 |
} |
1170 |
function getBidi(ch, partPos) { |
1171 |
var part = order[partPos], right = part.level % 2; |
1172 |
if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { |
1173 |
part = order[--partPos]; |
1174 |
ch = bidiRight(part) - (part.level % 2 ? 0 : 1); |
1175 |
right = true; |
1176 |
} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { |
1177 |
part = order[++partPos]; |
1178 |
ch = bidiLeft(part) - part.level % 2; |
1179 |
right = false; |
1180 |
} |
1181 |
if (right && ch == part.to && ch > part.from) return get(ch - 1); |
1182 |
return get(ch, right); |
1183 |
} |
1184 |
var order = getOrder(lineObj), ch = pos.ch; |
1185 |
if (!order) return get(ch); |
1186 |
var partPos = getBidiPartAt(order, ch); |
1187 |
var val = getBidi(ch, partPos); |
1188 |
if (bidiOther != null) val.other = getBidi(ch, bidiOther); |
1189 |
return val; |
1190 |
} |
1191 |
|
1192 |
function PosWithInfo(line, ch, outside, xRel) { |
1193 |
var pos = new Pos(line, ch); |
1194 |
pos.xRel = xRel; |
1195 |
if (outside) pos.outside = true; |
1196 |
return pos; |
1197 |
} |
1198 |
|
1199 |
// Coords must be lineSpace-local |
1200 |
function coordsChar(cm, x, y) { |
1201 |
var doc = cm.doc; |
1202 |
y += cm.display.viewOffset; |
1203 |
if (y < 0) return PosWithInfo(doc.first, 0, true, -1); |
1204 |
var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; |
1205 |
if (lineNo > last) |
1206 |
return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); |
1207 |
if (x < 0) x = 0; |
1208 |
|
1209 |
for (;;) { |
1210 |
var lineObj = getLine(doc, lineNo); |
1211 |
var found = coordsCharInner(cm, lineObj, lineNo, x, y); |
1212 |
var merged = collapsedSpanAtEnd(lineObj); |
1213 |
var mergedPos = merged && merged.find(); |
1214 |
if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) |
1215 |
lineNo = mergedPos.to.line; |
1216 |
else |
1217 |
return found; |
1218 |
} |
1219 |
} |
1220 |
|
1221 |
function coordsCharInner(cm, lineObj, lineNo, x, y) { |
1222 |
var innerOff = y - heightAtLine(cm, lineObj); |
1223 |
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; |
1224 |
var measurement = measureLine(cm, lineObj); |
1225 |
|
1226 |
function getX(ch) { |
1227 |
var sp = cursorCoords(cm, Pos(lineNo, ch), "line", |
1228 |
lineObj, measurement); |
1229 |
wrongLine = true; |
1230 |
if (innerOff > sp.bottom) return sp.left - adjust; |
1231 |
else if (innerOff < sp.top) return sp.left + adjust; |
1232 |
else wrongLine = false; |
1233 |
return sp.left; |
1234 |
} |
1235 |
|
1236 |
var bidi = getOrder(lineObj), dist = lineObj.text.length; |
1237 |
var from = lineLeft(lineObj), to = lineRight(lineObj); |
1238 |
var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; |
1239 |
|
1240 |
if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); |
1241 |
// Do a binary search between these bounds. |
1242 |
for (;;) { |
1243 |
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { |
1244 |
var ch = x < fromX || x - fromX <= toX - x ? from : to; |
1245 |
var xDiff = x - (ch == from ? fromX : toX); |
1246 |
while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; |
1247 |
var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, |
1248 |
xDiff < 0 ? -1 : xDiff ? 1 : 0); |
1249 |
return pos; |
1250 |
} |
1251 |
var step = Math.ceil(dist / 2), middle = from + step; |
1252 |
if (bidi) { |
1253 |
middle = from; |
1254 |
for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); |
1255 |
} |
1256 |
var middleX = getX(middle); |
1257 |
if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} |
1258 |
else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} |
1259 |
} |
1260 |
} |
1261 |
|
1262 |
var measureText; |
1263 |
function textHeight(display) { |
1264 |
if (display.cachedTextHeight != null) return display.cachedTextHeight; |
1265 |
if (measureText == null) { |
1266 |
measureText = elt("pre"); |
1267 |
// Measure a bunch of lines, for browsers that compute |
1268 |
// fractional heights. |
1269 |
for (var i = 0; i < 49; ++i) { |
1270 |
measureText.appendChild(document.createTextNode("x")); |
1271 |
measureText.appendChild(elt("br")); |
1272 |
} |
1273 |
measureText.appendChild(document.createTextNode("x")); |
1274 |
} |
1275 |
removeChildrenAndAdd(display.measure, measureText); |
1276 |
var height = measureText.offsetHeight / 50; |
1277 |
if (height > 3) display.cachedTextHeight = height; |
1278 |
removeChildren(display.measure); |
1279 |
return height || 1; |
1280 |
} |
1281 |
|
1282 |
function charWidth(display) { |
1283 |
if (display.cachedCharWidth != null) return display.cachedCharWidth; |
1284 |
var anchor = elt("span", "x"); |
1285 |
var pre = elt("pre", [anchor]); |
1286 |
removeChildrenAndAdd(display.measure, pre); |
1287 |
var width = anchor.offsetWidth; |
1288 |
if (width > 2) display.cachedCharWidth = width; |
1289 |
return width || 10; |
1290 |
} |
1291 |
|
1292 |
// OPERATIONS |
1293 |
|
1294 |
// Operations are used to wrap changes in such a way that each |
1295 |
// change won't have to update the cursor and display (which would |
1296 |
// be awkward, slow, and error-prone), but instead updates are |
1297 |
// batched and then all combined and executed at once. |
1298 |
|
1299 |
var nextOpId = 0; |
1300 |
function startOperation(cm) { |
1301 |
cm.curOp = { |
1302 |
// An array of ranges of lines that have to be updated. See |
1303 |
// updateDisplay. |
1304 |
changes: [], |
1305 |
updateInput: null, |
1306 |
userSelChange: null, |
1307 |
textChanged: null, |
1308 |
selectionChanged: false, |
1309 |
cursorActivity: false, |
1310 |
updateMaxLine: false, |
1311 |
updateScrollPos: false, |
1312 |
id: ++nextOpId |
1313 |
}; |
1314 |
if (!delayedCallbackDepth++) delayedCallbacks = []; |
1315 |
} |
1316 |
|
1317 |
function endOperation(cm) { |
1318 |
var op = cm.curOp, doc = cm.doc, display = cm.display; |
1319 |
cm.curOp = null; |
1320 |
|
1321 |
if (op.updateMaxLine) computeMaxLength(cm); |
1322 |
if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { |
1323 |
var width = measureLineWidth(cm, display.maxLine); |
1324 |
display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; |
1325 |
display.maxLineChanged = false; |
1326 |
var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); |
1327 |
if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) |
1328 |
setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); |
1329 |
} |
1330 |
var newScrollPos, updated; |
1331 |
if (op.updateScrollPos) { |
1332 |
newScrollPos = op.updateScrollPos; |
1333 |
} else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible |
1334 |
var coords = cursorCoords(cm, doc.sel.head); |
1335 |
newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); |
1336 |
} |
1337 |
if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null) { |
1338 |
updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop); |
1339 |
if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop; |
1340 |
} |
1341 |
if (!updated && op.selectionChanged) updateSelection(cm); |
1342 |
if (op.updateScrollPos) { |
1343 |
display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop; |
1344 |
display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft; |
1345 |
alignHorizontally(cm); |
1346 |
if (op.scrollToPos) |
1347 |
scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin); |
1348 |
} else if (newScrollPos) { |
1349 |
scrollCursorIntoView(cm); |
1350 |
} |
1351 |
if (op.selectionChanged) restartBlink(cm); |
1352 |
|
1353 |
if (cm.state.focused && op.updateInput) |
1354 |
resetInput(cm, op.userSelChange); |
1355 |
|
1356 |
var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; |
1357 |
if (hidden) for (var i = 0; i < hidden.length; ++i) |
1358 |
if (!hidden[i].lines.length) signal(hidden[i], "hide"); |
1359 |
if (unhidden) for (var i = 0; i < unhidden.length; ++i) |
1360 |
if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); |
1361 |
|
1362 |
var delayed; |
1363 |
if (!--delayedCallbackDepth) { |
1364 |
delayed = delayedCallbacks; |
1365 |
delayedCallbacks = null; |
1366 |
} |
1367 |
if (op.textChanged) |
1368 |
signal(cm, "change", cm, op.textChanged); |
1369 |
if (op.cursorActivity) signal(cm, "cursorActivity", cm); |
1370 |
if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i](); |
1371 |
} |
1372 |
|
1373 |
// Wraps a function in an operation. Returns the wrapped function. |
1374 |
function operation(cm1, f) { |
1375 |
return function() { |
1376 |
var cm = cm1 || this, withOp = !cm.curOp; |
1377 |
if (withOp) startOperation(cm); |
1378 |
try { var result = f.apply(cm, arguments); } |
1379 |
finally { if (withOp) endOperation(cm); } |
1380 |
return result; |
1381 |
}; |
1382 |
} |
1383 |
function docOperation(f) { |
1384 |
return function() { |
1385 |
var withOp = this.cm && !this.cm.curOp, result; |
1386 |
if (withOp) startOperation(this.cm); |
1387 |
try { result = f.apply(this, arguments); } |
1388 |
finally { if (withOp) endOperation(this.cm); } |
1389 |
return result; |
1390 |
}; |
1391 |
} |
1392 |
function runInOp(cm, f) { |
1393 |
var withOp = !cm.curOp, result; |
1394 |
if (withOp) startOperation(cm); |
1395 |
try { result = f(); } |
1396 |
finally { if (withOp) endOperation(cm); } |
1397 |
return result; |
1398 |
} |
1399 |
|
1400 |
function regChange(cm, from, to, lendiff) { |
1401 |
if (from == null) from = cm.doc.first; |
1402 |
if (to == null) to = cm.doc.first + cm.doc.size; |
1403 |
cm.curOp.changes.push({from: from, to: to, diff: lendiff}); |
1404 |
} |
1405 |
|
1406 |
// INPUT HANDLING |
1407 |
|
1408 |
function slowPoll(cm) { |
1409 |
if (cm.display.pollingFast) return; |
1410 |
cm.display.poll.set(cm.options.pollInterval, function() { |
1411 |
readInput(cm); |
1412 |
if (cm.state.focused) slowPoll(cm); |
1413 |
}); |
1414 |
} |
1415 |
|
1416 |
function fastPoll(cm) { |
1417 |
var missed = false; |
1418 |
cm.display.pollingFast = true; |
1419 |
function p() { |
1420 |
var changed = readInput(cm); |
1421 |
if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} |
1422 |
else {cm.display.pollingFast = false; slowPoll(cm);} |
1423 |
} |
1424 |
cm.display.poll.set(20, p); |
1425 |
} |
1426 |
|
1427 |
// prevInput is a hack to work with IME. If we reset the textarea |
1428 |
// on every change, that breaks IME. So we look for changes |
1429 |
// compared to the previous content instead. (Modern browsers have |
1430 |
// events that indicate IME taking place, but these are not widely |
1431 |
// supported or compatible enough yet to rely on.) |
1432 |
function readInput(cm) { |
1433 |
var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; |
1434 |
if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false; |
1435 |
var text = input.value; |
1436 |
if (text == prevInput && posEq(sel.from, sel.to)) return false; |
1437 |
if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { |
1438 |
resetInput(cm, true); |
1439 |
return false; |
1440 |
} |
1441 |
|
1442 |
var withOp = !cm.curOp; |
1443 |
if (withOp) startOperation(cm); |
1444 |
sel.shift = false; |
1445 |
var same = 0, l = Math.min(prevInput.length, text.length); |
1446 |
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; |
1447 |
var from = sel.from, to = sel.to; |
1448 |
if (same < prevInput.length) |
1449 |
from = Pos(from.line, from.ch - (prevInput.length - same)); |
1450 |
else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) |
1451 |
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same))); |
1452 |
|
1453 |
var updateInput = cm.curOp.updateInput; |
1454 |
var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)), |
1455 |
origin: cm.state.pasteIncoming ? "paste" : "+input"}; |
1456 |
makeChange(cm.doc, changeEvent, "end"); |
1457 |
cm.curOp.updateInput = updateInput; |
1458 |
signalLater(cm, "inputRead", cm, changeEvent); |
1459 |
|
1460 |
if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; |
1461 |
else cm.display.prevInput = text; |
1462 |
if (withOp) endOperation(cm); |
1463 |
cm.state.pasteIncoming = false; |
1464 |
return true; |
1465 |
} |
1466 |
|
1467 |
function resetInput(cm, user) { |
1468 |
var minimal, selected, doc = cm.doc; |
1469 |
if (!posEq(doc.sel.from, doc.sel.to)) { |
1470 |
cm.display.prevInput = ""; |
1471 |
minimal = hasCopyEvent && |
1472 |
(doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); |
1473 |
var content = minimal ? "-" : selected || cm.getSelection(); |
1474 |
cm.display.input.value = content; |
1475 |
if (cm.state.focused) selectInput(cm.display.input); |
1476 |
if (ie && !ie_lt9) cm.display.inputHasSelection = content; |
1477 |
} else if (user) { |
1478 |
cm.display.prevInput = cm.display.input.value = ""; |
1479 |
if (ie && !ie_lt9) cm.display.inputHasSelection = null; |
1480 |
} |
1481 |
cm.display.inaccurateSelection = minimal; |
1482 |
} |
1483 |
|
1484 |
function focusInput(cm) { |
1485 |
if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) |
1486 |
cm.display.input.focus(); |
1487 |
} |
1488 |
|
1489 |
function isReadOnly(cm) { |
1490 |
return cm.options.readOnly || cm.doc.cantEdit; |
1491 |
} |
1492 |
|
1493 |
// EVENT HANDLERS |
1494 |
|
1495 |
function registerEventHandlers(cm) { |
1496 |
var d = cm.display; |
1497 |
on(d.scroller, "mousedown", operation(cm, onMouseDown)); |
1498 |
if (ie) |
1499 |
on(d.scroller, "dblclick", operation(cm, function(e) { |
1500 |
if (signalDOMEvent(cm, e)) return; |
1501 |
var pos = posFromMouse(cm, e); |
1502 |
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; |
1503 |
e_preventDefault(e); |
1504 |
var word = findWordAt(getLine(cm.doc, pos.line).text, pos); |
1505 |
extendSelection(cm.doc, word.from, word.to); |
1506 |
})); |
1507 |
else |
1508 |
on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); |
1509 |
on(d.lineSpace, "selectstart", function(e) { |
1510 |
if (!eventInWidget(d, e)) e_preventDefault(e); |
1511 |
}); |
1512 |
// Gecko browsers fire contextmenu *after* opening the menu, at |
1513 |
// which point we can't mess with it anymore. Context menu is |
1514 |
// handled in onMouseDown for Gecko. |
1515 |
if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); |
1516 |
|
1517 |
on(d.scroller, "scroll", function() { |
1518 |
if (d.scroller.clientHeight) { |
1519 |
setScrollTop(cm, d.scroller.scrollTop); |
1520 |
setScrollLeft(cm, d.scroller.scrollLeft, true); |
1521 |
signal(cm, "scroll", cm); |
1522 |
} |
1523 |
}); |
1524 |
on(d.scrollbarV, "scroll", function() { |
1525 |
if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); |
1526 |
}); |
1527 |
on(d.scrollbarH, "scroll", function() { |
1528 |
if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); |
1529 |
}); |
1530 |
|
1531 |
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); |
1532 |
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); |
1533 |
|
1534 |
function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } |
1535 |
on(d.scrollbarH, "mousedown", reFocus); |
1536 |
on(d.scrollbarV, "mousedown", reFocus); |
1537 |
// Prevent wrapper from ever scrolling |
1538 |
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); |
1539 |
|
1540 |
var resizeTimer; |
1541 |
function onResize() { |
1542 |
if (resizeTimer == null) resizeTimer = setTimeout(function() { |
1543 |
resizeTimer = null; |
1544 |
// Might be a text scaling operation, clear size caches. |
1545 |
d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null; |
1546 |
clearCaches(cm); |
1547 |
runInOp(cm, bind(regChange, cm)); |
1548 |
}, 100); |
1549 |
} |
1550 |
on(window, "resize", onResize); |
1551 |
// Above handler holds on to the editor and its data structures. |
1552 |
// Here we poll to unregister it when the editor is no longer in |
1553 |
// the document, so that it can be garbage-collected. |
1554 |
function unregister() { |
1555 |
for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {} |
1556 |
if (p) setTimeout(unregister, 5000); |
1557 |
else off(window, "resize", onResize); |
1558 |
} |
1559 |
setTimeout(unregister, 5000); |
1560 |
|
1561 |
on(d.input, "keyup", operation(cm, function(e) { |
1562 |
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
1563 |
if (e.keyCode == 16) cm.doc.sel.shift = false; |
1564 |
})); |
1565 |
on(d.input, "input", bind(fastPoll, cm)); |
1566 |
on(d.input, "keydown", operation(cm, onKeyDown)); |
1567 |
on(d.input, "keypress", operation(cm, onKeyPress)); |
1568 |
on(d.input, "focus", bind(onFocus, cm)); |
1569 |
on(d.input, "blur", bind(onBlur, cm)); |
1570 |
|
1571 |
function drag_(e) { |
1572 |
if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; |
1573 |
e_stop(e); |
1574 |
} |
1575 |
if (cm.options.dragDrop) { |
1576 |
on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); |
1577 |
on(d.scroller, "dragenter", drag_); |
1578 |
on(d.scroller, "dragover", drag_); |
1579 |
on(d.scroller, "drop", operation(cm, onDrop)); |
1580 |
} |
1581 |
on(d.scroller, "paste", function(e){ |
1582 |
if (eventInWidget(d, e)) return; |
1583 |
focusInput(cm); |
1584 |
fastPoll(cm); |
1585 |
}); |
1586 |
on(d.input, "paste", function() { |
1587 |
cm.state.pasteIncoming = true; |
1588 |
fastPoll(cm); |
1589 |
}); |
1590 |
|
1591 |
function prepareCopy() { |
1592 |
if (d.inaccurateSelection) { |
1593 |
d.prevInput = ""; |
1594 |
d.inaccurateSelection = false; |
1595 |
d.input.value = cm.getSelection(); |
1596 |
selectInput(d.input); |
1597 |
} |
1598 |
} |
1599 |
on(d.input, "cut", prepareCopy); |
1600 |
on(d.input, "copy", prepareCopy); |
1601 |
|
1602 |
// Needed to handle Tab key in KHTML |
1603 |
if (khtml) on(d.sizer, "mouseup", function() { |
1604 |
if (document.activeElement == d.input) d.input.blur(); |
1605 |
focusInput(cm); |
1606 |
}); |
1607 |
} |
1608 |
|
1609 |
function eventInWidget(display, e) { |
1610 |
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { |
1611 |
if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; |
1612 |
} |
1613 |
} |
1614 |
|
1615 |
function posFromMouse(cm, e, liberal) { |
1616 |
var display = cm.display; |
1617 |
if (!liberal) { |
1618 |
var target = e_target(e); |
1619 |
if (target == display.scrollbarH || target == display.scrollbarH.firstChild || |
1620 |
target == display.scrollbarV || target == display.scrollbarV.firstChild || |
1621 |
target == display.scrollbarFiller || target == display.gutterFiller) return null; |
1622 |
} |
1623 |
var x, y, space = getRect(display.lineSpace); |
1624 |
// Fails unpredictably on IE[67] when mouse is dragged around quickly. |
1625 |
try { x = e.clientX; y = e.clientY; } catch (e) { return null; } |
1626 |
return coordsChar(cm, x - space.left, y - space.top); |
1627 |
} |
1628 |
|
1629 |
var lastClick, lastDoubleClick; |
1630 |
function onMouseDown(e) { |
1631 |
if (signalDOMEvent(this, e)) return; |
1632 |
var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel; |
1633 |
sel.shift = e.shiftKey; |
1634 |
|
1635 |
if (eventInWidget(display, e)) { |
1636 |
if (!webkit) { |
1637 |
display.scroller.draggable = false; |
1638 |
setTimeout(function(){display.scroller.draggable = true;}, 100); |
1639 |
} |
1640 |
return; |
1641 |
} |
1642 |
if (clickInGutter(cm, e)) return; |
1643 |
var start = posFromMouse(cm, e); |
1644 |
|
1645 |
switch (e_button(e)) { |
1646 |
case 3: |
1647 |
if (captureMiddleClick) onContextMenu.call(cm, cm, e); |
1648 |
return; |
1649 |
case 2: |
1650 |
if (start) extendSelection(cm.doc, start); |
1651 |
setTimeout(bind(focusInput, cm), 20); |
1652 |
e_preventDefault(e); |
1653 |
return; |
1654 |
} |
1655 |
// For button 1, if it was clicked inside the editor |
1656 |
// (posFromMouse returning non-null), we have to adjust the |
1657 |
// selection. |
1658 |
if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} |
1659 |
|
1660 |
if (!cm.state.focused) onFocus(cm); |
1661 |
|
1662 |
var now = +new Date, type = "single"; |
1663 |
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { |
1664 |
type = "triple"; |
1665 |
e_preventDefault(e); |
1666 |
setTimeout(bind(focusInput, cm), 20); |
1667 |
selectLine(cm, start.line); |
1668 |
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { |
1669 |
type = "double"; |
1670 |
lastDoubleClick = {time: now, pos: start}; |
1671 |
e_preventDefault(e); |
1672 |
var word = findWordAt(getLine(doc, start.line).text, start); |
1673 |
extendSelection(cm.doc, word.from, word.to); |
1674 |
} else { lastClick = {time: now, pos: start}; } |
1675 |
|
1676 |
var last = start; |
1677 |
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && |
1678 |
!posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { |
1679 |
var dragEnd = operation(cm, function(e2) { |
1680 |
if (webkit) display.scroller.draggable = false; |
1681 |
cm.state.draggingText = false; |
1682 |
off(document, "mouseup", dragEnd); |
1683 |
off(display.scroller, "drop", dragEnd); |
1684 |
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { |
1685 |
e_preventDefault(e2); |
1686 |
extendSelection(cm.doc, start); |
1687 |
focusInput(cm); |
1688 |
} |
1689 |
}); |
1690 |
// Let the drag handler handle this. |
1691 |
if (webkit) display.scroller.draggable = true; |
1692 |
cm.state.draggingText = dragEnd; |
1693 |
// IE's approach to draggable |
1694 |
if (display.scroller.dragDrop) display.scroller.dragDrop(); |
1695 |
on(document, "mouseup", dragEnd); |
1696 |
on(display.scroller, "drop", dragEnd); |
1697 |
return; |
1698 |
} |
1699 |
e_preventDefault(e); |
1700 |
if (type == "single") extendSelection(cm.doc, clipPos(doc, start)); |
1701 |
|
1702 |
var startstart = sel.from, startend = sel.to, lastPos = start; |
1703 |
|
1704 |
function doSelect(cur) { |
1705 |
if (posEq(lastPos, cur)) return; |
1706 |
lastPos = cur; |
1707 |
|
1708 |
if (type == "single") { |
1709 |
extendSelection(cm.doc, clipPos(doc, start), cur); |
1710 |
return; |
1711 |
} |
1712 |
|
1713 |
startstart = clipPos(doc, startstart); |
1714 |
startend = clipPos(doc, startend); |
1715 |
if (type == "double") { |
1716 |
var word = findWordAt(getLine(doc, cur.line).text, cur); |
1717 |
if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend); |
1718 |
else extendSelection(cm.doc, startstart, word.to); |
1719 |
} else if (type == "triple") { |
1720 |
if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); |
1721 |
else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); |
1722 |
} |
1723 |
} |
1724 |
|
1725 |
var editorSize = getRect(display.wrapper); |
1726 |
// Used to ensure timeout re-tries don't fire when another extend |
1727 |
// happened in the meantime (clearTimeout isn't reliable -- at |
1728 |
// least on Chrome, the timeouts still happen even when cleared, |
1729 |
// if the clear happens after their scheduled firing time). |
1730 |
var counter = 0; |
1731 |
|
1732 |
function extend(e) { |
1733 |
var curCount = ++counter; |
1734 |
var cur = posFromMouse(cm, e, true); |
1735 |
if (!cur) return; |
1736 |
if (!posEq(cur, last)) { |
1737 |
if (!cm.state.focused) onFocus(cm); |
1738 |
last = cur; |
1739 |
doSelect(cur); |
1740 |
var visible = visibleLines(display, doc); |
1741 |
if (cur.line >= visible.to || cur.line < visible.from) |
1742 |
setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); |
1743 |
} else { |
1744 |
var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; |
1745 |
if (outside) setTimeout(operation(cm, function() { |
1746 |
if (counter != curCount) return; |
1747 |
display.scroller.scrollTop += outside; |
1748 |
extend(e); |
1749 |
}), 50); |
1750 |
} |
1751 |
} |
1752 |
|
1753 |
function done(e) { |
1754 |
counter = Infinity; |
1755 |
e_preventDefault(e); |
1756 |
focusInput(cm); |
1757 |
off(document, "mousemove", move); |
1758 |
off(document, "mouseup", up); |
1759 |
} |
1760 |
|
1761 |
var move = operation(cm, function(e) { |
1762 |
if (!ie && !e_button(e)) done(e); |
1763 |
else extend(e); |
1764 |
}); |
1765 |
var up = operation(cm, done); |
1766 |
on(document, "mousemove", move); |
1767 |
on(document, "mouseup", up); |
1768 |
} |
1769 |
|
1770 |
function clickInGutter(cm, e) { |
1771 |
var display = cm.display; |
1772 |
try { var mX = e.clientX, mY = e.clientY; } |
1773 |
catch(e) { return false; } |
1774 |
|
1775 |
if (mX >= Math.floor(getRect(display.gutters).right)) return false; |
1776 |
e_preventDefault(e); |
1777 |
if (!hasHandler(cm, "gutterClick")) return true; |
1778 |
|
1779 |
var lineBox = getRect(display.lineDiv); |
1780 |
if (mY > lineBox.bottom) return true; |
1781 |
mY -= lineBox.top - display.viewOffset; |
1782 |
|
1783 |
for (var i = 0; i < cm.options.gutters.length; ++i) { |
1784 |
var g = display.gutters.childNodes[i]; |
1785 |
if (g && getRect(g).right >= mX) { |
1786 |
var line = lineAtHeight(cm.doc, mY); |
1787 |
var gutter = cm.options.gutters[i]; |
1788 |
signalLater(cm, "gutterClick", cm, line, gutter, e); |
1789 |
break; |
1790 |
} |
1791 |
} |
1792 |
return true; |
1793 |
} |
1794 |
|
1795 |
// Kludge to work around strange IE behavior where it'll sometimes |
1796 |
// re-fire a series of drag-related events right after the drop (#1551) |
1797 |
var lastDrop = 0; |
1798 |
|
1799 |
function onDrop(e) { |
1800 |
var cm = this; |
1801 |
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) |
1802 |
return; |
1803 |
e_preventDefault(e); |
1804 |
if (ie) lastDrop = +new Date; |
1805 |
var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; |
1806 |
if (!pos || isReadOnly(cm)) return; |
1807 |
if (files && files.length && window.FileReader && window.File) { |
1808 |
var n = files.length, text = Array(n), read = 0; |
1809 |
var loadFile = function(file, i) { |
1810 |
var reader = new FileReader; |
1811 |
reader.onload = function() { |
1812 |
text[i] = reader.result; |
1813 |
if (++read == n) { |
1814 |
pos = clipPos(cm.doc, pos); |
1815 |
makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); |
1816 |
} |
1817 |
}; |
1818 |
reader.readAsText(file); |
1819 |
}; |
1820 |
for (var i = 0; i < n; ++i) loadFile(files[i], i); |
1821 |
} else { |
1822 |
// Don't do a replace if the drop happened inside of the selected text. |
1823 |
if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { |
1824 |
cm.state.draggingText(e); |
1825 |
// Ensure the editor is re-focused |
1826 |
setTimeout(bind(focusInput, cm), 20); |
1827 |
return; |
1828 |
} |
1829 |
try { |
1830 |
var text = e.dataTransfer.getData("Text"); |
1831 |
if (text) { |
1832 |
var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; |
1833 |
setSelection(cm.doc, pos, pos); |
1834 |
if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste"); |
1835 |
cm.replaceSelection(text, null, "paste"); |
1836 |
focusInput(cm); |
1837 |
onFocus(cm); |
1838 |
} |
1839 |
} |
1840 |
catch(e){} |
1841 |
} |
1842 |
} |
1843 |
|
1844 |
function onDragStart(cm, e) { |
1845 |
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } |
1846 |
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; |
1847 |
|
1848 |
var txt = cm.getSelection(); |
1849 |
e.dataTransfer.setData("Text", txt); |
1850 |
|
1851 |
// Use dummy image instead of default browsers image. |
1852 |
// Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. |
1853 |
if (e.dataTransfer.setDragImage && !safari) { |
1854 |
var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); |
1855 |
if (opera) { |
1856 |
img.width = img.height = 1; |
1857 |
cm.display.wrapper.appendChild(img); |
1858 |
// Force a relayout, or Opera won't use our image for some obscure reason |
1859 |
img._top = img.offsetTop; |
1860 |
} |
1861 |
e.dataTransfer.setDragImage(img, 0, 0); |
1862 |
if (opera) img.parentNode.removeChild(img); |
1863 |
} |
1864 |
} |
1865 |
|
1866 |
function setScrollTop(cm, val) { |
1867 |
if (Math.abs(cm.doc.scrollTop - val) < 2) return; |
1868 |
cm.doc.scrollTop = val; |
1869 |
if (!gecko) updateDisplay(cm, [], val); |
1870 |
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; |
1871 |
if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; |
1872 |
if (gecko) updateDisplay(cm, []); |
1873 |
startWorker(cm, 100); |
1874 |
} |
1875 |
function setScrollLeft(cm, val, isScroller) { |
1876 |
if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; |
1877 |
val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); |
1878 |
cm.doc.scrollLeft = val; |
1879 |
alignHorizontally(cm); |
1880 |
if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; |
1881 |
if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; |
1882 |
} |
1883 |
|
1884 |
// Since the delta values reported on mouse wheel events are |
1885 |
// unstandardized between browsers and even browser versions, and |
1886 |
// generally horribly unpredictable, this code starts by measuring |
1887 |
// the scroll effect that the first few mouse wheel events have, |
1888 |
// and, from that, detects the way it can convert deltas to pixel |
1889 |
// offsets afterwards. |
1890 |
// |
1891 |
// The reason we want to know the amount a wheel event will scroll |
1892 |
// is that it gives us a chance to update the display before the |
1893 |
// actual scrolling happens, reducing flickering. |
1894 |
|
1895 |
var wheelSamples = 0, wheelPixelsPerUnit = null; |
1896 |
// Fill in a browser-detected starting value on browsers where we |
1897 |
// know one. These don't have to be accurate -- the result of them |
1898 |
// being wrong would just be a slight flicker on the first wheel |
1899 |
// scroll (if it is large enough). |
1900 |
if (ie) wheelPixelsPerUnit = -.53; |
1901 |
else if (gecko) wheelPixelsPerUnit = 15; |
1902 |
else if (chrome) wheelPixelsPerUnit = -.7; |
1903 |
else if (safari) wheelPixelsPerUnit = -1/3; |
1904 |
|
1905 |
function onScrollWheel(cm, e) { |
1906 |
var dx = e.wheelDeltaX, dy = e.wheelDeltaY; |
1907 |
if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; |
1908 |
if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; |
1909 |
else if (dy == null) dy = e.wheelDelta; |
1910 |
|
1911 |
var display = cm.display, scroll = display.scroller; |
1912 |
// Quit if there's nothing to scroll here |
1913 |
if (!(dx && scroll.scrollWidth > scroll.clientWidth || |
1914 |
dy && scroll.scrollHeight > scroll.clientHeight)) return; |
1915 |
|
1916 |
// Webkit browsers on OS X abort momentum scrolls when the target |
1917 |
// of the scroll event is removed from the scrollable element. |
1918 |
// This hack (see related code in patchDisplay) makes sure the |
1919 |
// element is kept around. |
1920 |
if (dy && mac && webkit) { |
1921 |
for (var cur = e.target; cur != scroll; cur = cur.parentNode) { |
1922 |
if (cur.lineObj) { |
1923 |
cm.display.currentWheelTarget = cur; |
1924 |
break; |
1925 |
} |
1926 |
} |
1927 |
} |
1928 |
|
1929 |
// On some browsers, horizontal scrolling will cause redraws to |
1930 |
// happen before the gutter has been realigned, causing it to |
1931 |
// wriggle around in a most unseemly way. When we have an |
1932 |
// estimated pixels/delta value, we just handle horizontal |
1933 |
// scrolling entirely here. It'll be slightly off from native, but |
1934 |
// better than glitching out. |
1935 |
if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { |
1936 |
if (dy) |
1937 |
setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); |
1938 |
setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); |
1939 |
e_preventDefault(e); |
1940 |
display.wheelStartX = null; // Abort measurement, if in progress |
1941 |
return; |
1942 |
} |
1943 |
|
1944 |
if (dy && wheelPixelsPerUnit != null) { |
1945 |
var pixels = dy * wheelPixelsPerUnit; |
1946 |
var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; |
1947 |
if (pixels < 0) top = Math.max(0, top + pixels - 50); |
1948 |
else bot = Math.min(cm.doc.height, bot + pixels + 50); |
1949 |
updateDisplay(cm, [], {top: top, bottom: bot}); |
1950 |
} |
1951 |
|
1952 |
if (wheelSamples < 20) { |
1953 |
if (display.wheelStartX == null) { |
1954 |
display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; |
1955 |
display.wheelDX = dx; display.wheelDY = dy; |
1956 |
setTimeout(function() { |
1957 |
if (display.wheelStartX == null) return; |
1958 |
var movedX = scroll.scrollLeft - display.wheelStartX; |
1959 |
var movedY = scroll.scrollTop - display.wheelStartY; |
1960 |
var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || |
1961 |
(movedX && display.wheelDX && movedX / display.wheelDX); |
1962 |
display.wheelStartX = display.wheelStartY = null; |
1963 |
if (!sample) return; |
1964 |
wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); |
1965 |
++wheelSamples; |
1966 |
}, 200); |
1967 |
} else { |
1968 |
display.wheelDX += dx; display.wheelDY += dy; |
1969 |
} |
1970 |
} |
1971 |
} |
1972 |
|
1973 |
function doHandleBinding(cm, bound, dropShift) { |
1974 |
if (typeof bound == "string") { |
1975 |
bound = commands[bound]; |
1976 |
if (!bound) return false; |
1977 |
} |
1978 |
// Ensure previous input has been read, so that the handler sees a |
1979 |
// consistent view of the document |
1980 |
if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; |
1981 |
var doc = cm.doc, prevShift = doc.sel.shift, done = false; |
1982 |
try { |
1983 |
if (isReadOnly(cm)) cm.state.suppressEdits = true; |
1984 |
if (dropShift) doc.sel.shift = false; |
1985 |
done = bound(cm) != Pass; |
1986 |
} finally { |
1987 |
doc.sel.shift = prevShift; |
1988 |
cm.state.suppressEdits = false; |
1989 |
} |
1990 |
return done; |
1991 |
} |
1992 |
|
1993 |
function allKeyMaps(cm) { |
1994 |
var maps = cm.state.keyMaps.slice(0); |
1995 |
if (cm.options.extraKeys) maps.push(cm.options.extraKeys); |
1996 |
maps.push(cm.options.keyMap); |
1997 |
return maps; |
1998 |
} |
1999 |
|
2000 |
var maybeTransition; |
2001 |
function handleKeyBinding(cm, e) { |
2002 |
// Handle auto keymap transitions |
2003 |
var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; |
2004 |
clearTimeout(maybeTransition); |
2005 |
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { |
2006 |
if (getKeyMap(cm.options.keyMap) == startMap) { |
2007 |
cm.options.keyMap = (next.call ? next.call(null, cm) : next); |
2008 |
keyMapChanged(cm); |
2009 |
} |
2010 |
}, 50); |
2011 |
|
2012 |
var name = keyName(e, true), handled = false; |
2013 |
if (!name) return false; |
2014 |
var keymaps = allKeyMaps(cm); |
2015 |
|
2016 |
if (e.shiftKey) { |
2017 |
// First try to resolve full name (including 'Shift-'). Failing |
2018 |
// that, see if there is a cursor-motion command (starting with |
2019 |
// 'go') bound to the keyname without 'Shift-'. |
2020 |
handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);}) |
2021 |
|| lookupKey(name, keymaps, function(b) { |
2022 |
if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) |
2023 |
return doHandleBinding(cm, b); |
2024 |
}); |
2025 |
} else { |
2026 |
handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); }); |
2027 |
} |
2028 |
|
2029 |
if (handled) { |
2030 |
e_preventDefault(e); |
2031 |
restartBlink(cm); |
2032 |
if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } |
2033 |
signalLater(cm, "keyHandled", cm, name, e); |
2034 |
} |
2035 |
return handled; |
2036 |
} |
2037 |
|
2038 |
function handleCharBinding(cm, e, ch) { |
2039 |
var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), |
2040 |
function(b) { return doHandleBinding(cm, b, true); }); |
2041 |
if (handled) { |
2042 |
e_preventDefault(e); |
2043 |
restartBlink(cm); |
2044 |
signalLater(cm, "keyHandled", cm, "'" + ch + "'", e); |
2045 |
} |
2046 |
return handled; |
2047 |
} |
2048 |
|
2049 |
var lastStoppedKey = null; |
2050 |
function onKeyDown(e) { |
2051 |
var cm = this; |
2052 |
if (!cm.state.focused) onFocus(cm); |
2053 |
if (ie && e.keyCode == 27) { e.returnValue = false; } |
2054 |
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
2055 |
var code = e.keyCode; |
2056 |
// IE does strange things with escape. |
2057 |
cm.doc.sel.shift = code == 16 || e.shiftKey; |
2058 |
// First give onKeyEvent option a chance to handle this. |
2059 |
var handled = handleKeyBinding(cm, e); |
2060 |
if (opera) { |
2061 |
lastStoppedKey = handled ? code : null; |
2062 |
// Opera has no cut event... we try to at least catch the key combo |
2063 |
if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) |
2064 |
cm.replaceSelection(""); |
2065 |
} |
2066 |
} |
2067 |
|
2068 |
function onKeyPress(e) { |
2069 |
var cm = this; |
2070 |
if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
2071 |
var keyCode = e.keyCode, charCode = e.charCode; |
2072 |
if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} |
2073 |
if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; |
2074 |
var ch = String.fromCharCode(charCode == null ? keyCode : charCode); |
2075 |
if (this.options.electricChars && this.doc.mode.electricChars && |
2076 |
this.options.smartIndent && !isReadOnly(this) && |
2077 |
this.doc.mode.electricChars.indexOf(ch) > -1) |
2078 |
setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75); |
2079 |
if (handleCharBinding(cm, e, ch)) return; |
2080 |
if (ie && !ie_lt9) cm.display.inputHasSelection = null; |
2081 |
fastPoll(cm); |
2082 |
} |
2083 |
|
2084 |
function onFocus(cm) { |
2085 |
if (cm.options.readOnly == "nocursor") return; |
2086 |
if (!cm.state.focused) { |
2087 |
signal(cm, "focus", cm); |
2088 |
cm.state.focused = true; |
2089 |
if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) |
2090 |
cm.display.wrapper.className += " CodeMirror-focused"; |
2091 |
resetInput(cm, true); |
2092 |
} |
2093 |
slowPoll(cm); |
2094 |
restartBlink(cm); |
2095 |
} |
2096 |
function onBlur(cm) { |
2097 |
if (cm.state.focused) { |
2098 |
signal(cm, "blur", cm); |
2099 |
cm.state.focused = false; |
2100 |
cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", ""); |
2101 |
} |
2102 |
clearInterval(cm.display.blinker); |
2103 |
setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150); |
2104 |
} |
2105 |
|
2106 |
var detectingSelectAll; |
2107 |
function onContextMenu(cm, e) { |
2108 |
var display = cm.display, sel = cm.doc.sel; |
2109 |
if (eventInWidget(display, e)) return; |
2110 |
|
2111 |
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; |
2112 |
if (!pos || opera) return; // Opera is difficult. |
2113 |
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) |
2114 |
operation(cm, setSelection)(cm.doc, pos, pos); |
2115 |
|
2116 |
var oldCSS = display.input.style.cssText; |
2117 |
display.inputDiv.style.position = "absolute"; |
2118 |
display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + |
2119 |
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + |
2120 |
"border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; |
2121 |
focusInput(cm); |
2122 |
resetInput(cm, true); |
2123 |
// Adds "Select all" to context menu in FF |
2124 |
if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; |
2125 |
|
2126 |
function prepareSelectAllHack() { |
2127 |
if (display.input.selectionStart != null) { |
2128 |
var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value); |
2129 |
display.prevInput = " "; |
2130 |
display.input.selectionStart = 1; display.input.selectionEnd = extval.length; |
2131 |
} |
2132 |
} |
2133 |
function rehide() { |
2134 |
display.inputDiv.style.position = "relative"; |
2135 |
display.input.style.cssText = oldCSS; |
2136 |
if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; |
2137 |
slowPoll(cm); |
2138 |
|
2139 |
// Try to detect the user choosing select-all |
2140 |
if (display.input.selectionStart != null) { |
2141 |
if (!ie || ie_lt9) prepareSelectAllHack(); |
2142 |
clearTimeout(detectingSelectAll); |
2143 |
var i = 0, poll = function(){ |
2144 |
if (display.prevInput == " " && display.input.selectionStart == 0) |
2145 |
operation(cm, commands.selectAll)(cm); |
2146 |
else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); |
2147 |
else resetInput(cm); |
2148 |
}; |
2149 |
detectingSelectAll = setTimeout(poll, 200); |
2150 |
} |
2151 |
} |
2152 |
|
2153 |
if (ie && !ie_lt9) prepareSelectAllHack(); |
2154 |
if (captureMiddleClick) { |
2155 |
e_stop(e); |
2156 |
var mouseup = function() { |
2157 |
off(window, "mouseup", mouseup); |
2158 |
setTimeout(rehide, 20); |
2159 |
}; |
2160 |
on(window, "mouseup", mouseup); |
2161 |
} else { |
2162 |
setTimeout(rehide, 50); |
2163 |
} |
2164 |
} |
2165 |
|
2166 |
// UPDATING |
2167 |
|
2168 |
var changeEnd = CodeMirror.changeEnd = function(change) { |
2169 |
if (!change.text) return change.to; |
2170 |
return Pos(change.from.line + change.text.length - 1, |
2171 |
lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); |
2172 |
}; |
2173 |
|
2174 |
// Make sure a position will be valid after the given change. |
2175 |
function clipPostChange(doc, change, pos) { |
2176 |
if (!posLess(change.from, pos)) return clipPos(doc, pos); |
2177 |
var diff = (change.text.length - 1) - (change.to.line - change.from.line); |
2178 |
if (pos.line > change.to.line + diff) { |
2179 |
var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; |
2180 |
if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length); |
2181 |
return clipToLen(pos, getLine(doc, preLine).text.length); |
2182 |
} |
2183 |
if (pos.line == change.to.line + diff) |
2184 |
return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + |
2185 |
getLine(doc, change.to.line).text.length - change.to.ch); |
2186 |
var inside = pos.line - change.from.line; |
2187 |
return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); |
2188 |
} |
2189 |
|
2190 |
// Hint can be null|"end"|"start"|"around"|{anchor,head} |
2191 |
function computeSelAfterChange(doc, change, hint) { |
2192 |
if (hint && typeof hint == "object") // Assumed to be {anchor, head} object |
2193 |
return {anchor: clipPostChange(doc, change, hint.anchor), |
2194 |
head: clipPostChange(doc, change, hint.head)}; |
2195 |
|
2196 |
if (hint == "start") return {anchor: change.from, head: change.from}; |
2197 |
|
2198 |
var end = changeEnd(change); |
2199 |
if (hint == "around") return {anchor: change.from, head: end}; |
2200 |
if (hint == "end") return {anchor: end, head: end}; |
2201 |
|
2202 |
// hint is null, leave the selection alone as much as possible |
2203 |
var adjustPos = function(pos) { |
2204 |
if (posLess(pos, change.from)) return pos; |
2205 |
if (!posLess(change.to, pos)) return end; |
2206 |
|
2207 |
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; |
2208 |
if (pos.line == change.to.line) ch += end.ch - change.to.ch; |
2209 |
return Pos(line, ch); |
2210 |
}; |
2211 |
return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; |
2212 |
} |
2213 |
|
2214 |
function filterChange(doc, change, update) { |
2215 |
var obj = { |
2216 |
canceled: false, |
2217 |
from: change.from, |
2218 |
to: change.to, |
2219 |
text: change.text, |
2220 |
origin: change.origin, |
2221 |
cancel: function() { this.canceled = true; } |
2222 |
}; |
2223 |
if (update) obj.update = function(from, to, text, origin) { |
2224 |
if (from) this.from = clipPos(doc, from); |
2225 |
if (to) this.to = clipPos(doc, to); |
2226 |
if (text) this.text = text; |
2227 |
if (origin !== undefined) this.origin = origin; |
2228 |
}; |
2229 |
signal(doc, "beforeChange", doc, obj); |
2230 |
if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); |
2231 |
|
2232 |
if (obj.canceled) return null; |
2233 |
return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; |
2234 |
} |
2235 |
|
2236 |
// Replace the range from from to to by the strings in replacement. |
2237 |
// change is a {from, to, text [, origin]} object |
2238 |
function makeChange(doc, change, selUpdate, ignoreReadOnly) { |
2239 |
if (doc.cm) { |
2240 |
if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly); |
2241 |
if (doc.cm.state.suppressEdits) return; |
2242 |
} |
2243 |
|
2244 |
if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { |
2245 |
change = filterChange(doc, change, true); |
2246 |
if (!change) return; |
2247 |
} |
2248 |
|
2249 |
// Possibly split or suppress the update based on the presence |
2250 |
// of read-only spans in its range. |
2251 |
var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); |
2252 |
if (split) { |
2253 |
for (var i = split.length - 1; i >= 1; --i) |
2254 |
makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]}); |
2255 |
if (split.length) |
2256 |
makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate); |
2257 |
} else { |
2258 |
makeChangeNoReadonly(doc, change, selUpdate); |
2259 |
} |
2260 |
} |
2261 |
|
2262 |
function makeChangeNoReadonly(doc, change, selUpdate) { |
2263 |
var selAfter = computeSelAfterChange(doc, change, selUpdate); |
2264 |
addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); |
2265 |
|
2266 |
makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); |
2267 |
var rebased = []; |
2268 |
|
2269 |
linkedDocs(doc, function(doc, sharedHist) { |
2270 |
if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
2271 |
rebaseHist(doc.history, change); |
2272 |
rebased.push(doc.history); |
2273 |
} |
2274 |
makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); |
2275 |
}); |
2276 |
} |
2277 |
|
2278 |
function makeChangeFromHistory(doc, type) { |
2279 |
if (doc.cm && doc.cm.state.suppressEdits) return; |
2280 |
|
2281 |
var hist = doc.history; |
2282 |
var event = (type == "undo" ? hist.done : hist.undone).pop(); |
2283 |
if (!event) return; |
2284 |
|
2285 |
var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, |
2286 |
anchorAfter: event.anchorBefore, headAfter: event.headBefore, |
2287 |
generation: hist.generation}; |
2288 |
(type == "undo" ? hist.undone : hist.done).push(anti); |
2289 |
hist.generation = event.generation || ++hist.maxGeneration; |
2290 |
|
2291 |
var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); |
2292 |
|
2293 |
for (var i = event.changes.length - 1; i >= 0; --i) { |
2294 |
var change = event.changes[i]; |
2295 |
change.origin = type; |
2296 |
if (filter && !filterChange(doc, change, false)) { |
2297 |
(type == "undo" ? hist.done : hist.undone).length = 0; |
2298 |
return; |
2299 |
} |
2300 |
|
2301 |
anti.changes.push(historyChangeFromChange(doc, change)); |
2302 |
|
2303 |
var after = i ? computeSelAfterChange(doc, change, null) |
2304 |
: {anchor: event.anchorBefore, head: event.headBefore}; |
2305 |
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); |
2306 |
var rebased = []; |
2307 |
|
2308 |
linkedDocs(doc, function(doc, sharedHist) { |
2309 |
if (!sharedHist && indexOf(rebased, doc.history) == -1) { |
2310 |
rebaseHist(doc.history, change); |
2311 |
rebased.push(doc.history); |
2312 |
} |
2313 |
makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); |
2314 |
}); |
2315 |
} |
2316 |
} |
2317 |
|
2318 |
function shiftDoc(doc, distance) { |
2319 |
function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);} |
2320 |
doc.first += distance; |
2321 |
if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance); |
2322 |
doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor); |
2323 |
doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to); |
2324 |
} |
2325 |
|
2326 |
function makeChangeSingleDoc(doc, change, selAfter, spans) { |
2327 |
if (doc.cm && !doc.cm.curOp) |
2328 |
return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); |
2329 |
|
2330 |
if (change.to.line < doc.first) { |
2331 |
shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); |
2332 |
return; |
2333 |
} |
2334 |
if (change.from.line > doc.lastLine()) return; |
2335 |
|
2336 |
// Clip the change to the size of this doc |
2337 |
if (change.from.line < doc.first) { |
2338 |
var shift = change.text.length - 1 - (doc.first - change.from.line); |
2339 |
shiftDoc(doc, shift); |
2340 |
change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), |
2341 |
text: [lst(change.text)], origin: change.origin}; |
2342 |
} |
2343 |
var last = doc.lastLine(); |
2344 |
if (change.to.line > last) { |
2345 |
change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), |
2346 |
text: [change.text[0]], origin: change.origin}; |
2347 |
} |
2348 |
|
2349 |
change.removed = getBetween(doc, change.from, change.to); |
2350 |
|
2351 |
if (!selAfter) selAfter = computeSelAfterChange(doc, change, null); |
2352 |
if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); |
2353 |
else updateDoc(doc, change, spans, selAfter); |
2354 |
} |
2355 |
|
2356 |
function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { |
2357 |
var doc = cm.doc, display = cm.display, from = change.from, to = change.to; |
2358 |
|
2359 |
var recomputeMaxLength = false, checkWidthStart = from.line; |
2360 |
if (!cm.options.lineWrapping) { |
2361 |
checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line))); |
2362 |
doc.iter(checkWidthStart, to.line + 1, function(line) { |
2363 |
if (line == display.maxLine) { |
2364 |
recomputeMaxLength = true; |
2365 |
return true; |
2366 |
} |
2367 |
}); |
2368 |
} |
2369 |
|
2370 |
if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) |
2371 |
cm.curOp.cursorActivity = true; |
2372 |
|
2373 |
updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); |
2374 |
|
2375 |
if (!cm.options.lineWrapping) { |
2376 |
doc.iter(checkWidthStart, from.line + change.text.length, function(line) { |
2377 |
var len = lineLength(doc, line); |
2378 |
if (len > display.maxLineLength) { |
2379 |
display.maxLine = line; |
2380 |
display.maxLineLength = len; |
2381 |
display.maxLineChanged = true; |
2382 |
recomputeMaxLength = false; |
2383 |
} |
2384 |
}); |
2385 |
if (recomputeMaxLength) cm.curOp.updateMaxLine = true; |
2386 |
} |
2387 |
|
2388 |
// Adjust frontier, schedule worker |
2389 |
doc.frontier = Math.min(doc.frontier, from.line); |
2390 |
startWorker(cm, 400); |
2391 |
|
2392 |
var lendiff = change.text.length - (to.line - from.line) - 1; |
2393 |
// Remember that these lines changed, for updating the display |
2394 |
regChange(cm, from.line, to.line + 1, lendiff); |
2395 |
|
2396 |
if (hasHandler(cm, "change")) { |
2397 |
var changeObj = {from: from, to: to, |
2398 |
text: change.text, |
2399 |
removed: change.removed, |
2400 |
origin: change.origin}; |
2401 |
if (cm.curOp.textChanged) { |
2402 |
for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} |
2403 |
cur.next = changeObj; |
2404 |
} else cm.curOp.textChanged = changeObj; |
2405 |
} |
2406 |
} |
2407 |
|
2408 |
function replaceRange(doc, code, from, to, origin) { |
2409 |
if (!to) to = from; |
2410 |
if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } |
2411 |
if (typeof code == "string") code = splitLines(code); |
2412 |
makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); |
2413 |
} |
2414 |
|
2415 |
// POSITION OBJECT |
2416 |
|
2417 |
function Pos(line, ch) { |
2418 |
if (!(this instanceof Pos)) return new Pos(line, ch); |
2419 |
this.line = line; this.ch = ch; |
2420 |
} |
2421 |
CodeMirror.Pos = Pos; |
2422 |
|
2423 |
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} |
2424 |
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} |
2425 |
function copyPos(x) {return Pos(x.line, x.ch);} |
2426 |
|
2427 |
// SELECTION |
2428 |
|
2429 |
function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} |
2430 |
function clipPos(doc, pos) { |
2431 |
if (pos.line < doc.first) return Pos(doc.first, 0); |
2432 |
var last = doc.first + doc.size - 1; |
2433 |
if (pos.line > last) return Pos(last, getLine(doc, last).text.length); |
2434 |
return clipToLen(pos, getLine(doc, pos.line).text.length); |
2435 |
} |
2436 |
function clipToLen(pos, linelen) { |
2437 |
var ch = pos.ch; |
2438 |
if (ch == null || ch > linelen) return Pos(pos.line, linelen); |
2439 |
else if (ch < 0) return Pos(pos.line, 0); |
2440 |
else return pos; |
2441 |
} |
2442 |
function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} |
2443 |
|
2444 |
// If shift is held, this will move the selection anchor. Otherwise, |
2445 |
// it'll set the whole selection. |
2446 |
function extendSelection(doc, pos, other, bias) { |
2447 |
if (doc.sel.shift || doc.sel.extend) { |
2448 |
var anchor = doc.sel.anchor; |
2449 |
if (other) { |
2450 |
var posBefore = posLess(pos, anchor); |
2451 |
if (posBefore != posLess(other, anchor)) { |
2452 |
anchor = pos; |
2453 |
pos = other; |
2454 |
} else if (posBefore != posLess(pos, other)) { |
2455 |
pos = other; |
2456 |
} |
2457 |
} |
2458 |
setSelection(doc, anchor, pos, bias); |
2459 |
} else { |
2460 |
setSelection(doc, pos, other || pos, bias); |
2461 |
} |
2462 |
if (doc.cm) doc.cm.curOp.userSelChange = true; |
2463 |
} |
2464 |
|
2465 |
function filterSelectionChange(doc, anchor, head) { |
2466 |
var obj = {anchor: anchor, head: head}; |
2467 |
signal(doc, "beforeSelectionChange", doc, obj); |
2468 |
if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); |
2469 |
obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head); |
2470 |
return obj; |
2471 |
} |
2472 |
|
2473 |
// Update the selection. Last two args are only used by |
2474 |
// updateDoc, since they have to be expressed in the line |
2475 |
// numbers before the update. |
2476 |
function setSelection(doc, anchor, head, bias, checkAtomic) { |
2477 |
if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { |
2478 |
var filtered = filterSelectionChange(doc, anchor, head); |
2479 |
head = filtered.head; |
2480 |
anchor = filtered.anchor; |
2481 |
} |
2482 |
|
2483 |
var sel = doc.sel; |
2484 |
sel.goalColumn = null; |
2485 |
// Skip over atomic spans. |
2486 |
if (checkAtomic || !posEq(anchor, sel.anchor)) |
2487 |
anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); |
2488 |
if (checkAtomic || !posEq(head, sel.head)) |
2489 |
head = skipAtomic(doc, head, bias, checkAtomic != "push"); |
2490 |
|
2491 |
if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; |
2492 |
|
2493 |
sel.anchor = anchor; sel.head = head; |
2494 |
var inv = posLess(head, anchor); |
2495 |
sel.from = inv ? head : anchor; |
2496 |
sel.to = inv ? anchor : head; |
2497 |
|
2498 |
if (doc.cm) |
2499 |
doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = |
2500 |
doc.cm.curOp.cursorActivity = true; |
2501 |
|
2502 |
signalLater(doc, "cursorActivity", doc); |
2503 |
} |
2504 |
|
2505 |
function reCheckSelection(cm) { |
2506 |
setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); |
2507 |
} |
2508 |
|
2509 |
function skipAtomic(doc, pos, bias, mayClear) { |
2510 |
var flipped = false, curPos = pos; |
2511 |
var dir = bias || 1; |
2512 |
doc.cantEdit = false; |
2513 |
search: for (;;) { |
2514 |
var line = getLine(doc, curPos.line); |
2515 |
if (line.markedSpans) { |
2516 |
for (var i = 0; i < line.markedSpans.length; ++i) { |
2517 |
var sp = line.markedSpans[i], m = sp.marker; |
2518 |
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && |
2519 |
(sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { |
2520 |
if (mayClear) { |
2521 |
signal(m, "beforeCursorEnter"); |
2522 |
if (m.explicitlyCleared) { |
2523 |
if (!line.markedSpans) break; |
2524 |
else {--i; continue;} |
2525 |
} |
2526 |
} |
2527 |
if (!m.atomic) continue; |
2528 |
var newPos = m.find()[dir < 0 ? "from" : "to"]; |
2529 |
if (posEq(newPos, curPos)) { |
2530 |
newPos.ch += dir; |
2531 |
if (newPos.ch < 0) { |
2532 |
if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); |
2533 |
else newPos = null; |
2534 |
} else if (newPos.ch > line.text.length) { |
2535 |
if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); |
2536 |
else newPos = null; |
2537 |
} |
2538 |
if (!newPos) { |
2539 |
if (flipped) { |
2540 |
// Driven in a corner -- no valid cursor position found at all |
2541 |
// -- try again *with* clearing, if we didn't already |
2542 |
if (!mayClear) return skipAtomic(doc, pos, bias, true); |
2543 |
// Otherwise, turn off editing until further notice, and return the start of the doc |
2544 |
doc.cantEdit = true; |
2545 |
return Pos(doc.first, 0); |
2546 |
} |
2547 |
flipped = true; newPos = pos; dir = -dir; |
2548 |
} |
2549 |
} |
2550 |
curPos = newPos; |
2551 |
continue search; |
2552 |
} |
2553 |
} |
2554 |
} |
2555 |
return curPos; |
2556 |
} |
2557 |
} |
2558 |
|
2559 |
// SCROLLING |
2560 |
|
2561 |
function scrollCursorIntoView(cm) { |
2562 |
var coords = scrollPosIntoView(cm, cm.doc.sel.head, cm.options.cursorScrollMargin); |
2563 |
if (!cm.state.focused) return; |
2564 |
var display = cm.display, box = getRect(display.sizer), doScroll = null; |
2565 |
if (coords.top + box.top < 0) doScroll = true; |
2566 |
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; |
2567 |
if (doScroll != null && !phantom) { |
2568 |
var hidden = display.cursor.style.display == "none"; |
2569 |
if (hidden) { |
2570 |
display.cursor.style.display = ""; |
2571 |
display.cursor.style.left = coords.left + "px"; |
2572 |
display.cursor.style.top = (coords.top - display.viewOffset) + "px"; |
2573 |
} |
2574 |
display.cursor.scrollIntoView(doScroll); |
2575 |
if (hidden) display.cursor.style.display = "none"; |
2576 |
} |
2577 |
} |
2578 |
|
2579 |
function scrollPosIntoView(cm, pos, margin) { |
2580 |
if (margin == null) margin = 0; |
2581 |
for (;;) { |
2582 |
var changed = false, coords = cursorCoords(cm, pos); |
2583 |
var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.bottom + margin); |
2584 |
var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; |
2585 |
if (scrollPos.scrollTop != null) { |
2586 |
setScrollTop(cm, scrollPos.scrollTop); |
2587 |
if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; |
2588 |
} |
2589 |
if (scrollPos.scrollLeft != null) { |
2590 |
setScrollLeft(cm, scrollPos.scrollLeft); |
2591 |
if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; |
2592 |
} |
2593 |
if (!changed) return coords; |
2594 |
} |
2595 |
} |
2596 |
|
2597 |
function scrollIntoView(cm, x1, y1, x2, y2) { |
2598 |
var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); |
2599 |
if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); |
2600 |
if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); |
2601 |
} |
2602 |
|
2603 |
function calculateScrollPos(cm, x1, y1, x2, y2) { |
2604 |
var display = cm.display, snapMargin = textHeight(cm.display); |
2605 |
if (y1 < 0) y1 = 0; |
2606 |
var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; |
2607 |
var docBottom = cm.doc.height + paddingVert(display); |
2608 |
var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; |
2609 |
if (y1 < screentop) { |
2610 |
result.scrollTop = atTop ? 0 : y1; |
2611 |
} else if (y2 > screentop + screen) { |
2612 |
var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); |
2613 |
if (newTop != screentop) result.scrollTop = newTop; |
2614 |
} |
2615 |
|
2616 |
var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; |
2617 |
x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; |
2618 |
var gutterw = display.gutters.offsetWidth; |
2619 |
var atLeft = x1 < gutterw + 10; |
2620 |
if (x1 < screenleft + gutterw || atLeft) { |
2621 |
if (atLeft) x1 = 0; |
2622 |
result.scrollLeft = Math.max(0, x1 - 10 - gutterw); |
2623 |
} else if (x2 > screenw + screenleft - 3) { |
2624 |
result.scrollLeft = x2 + 10 - screenw; |
2625 |
} |
2626 |
return result; |
2627 |
} |
2628 |
|
2629 |
function updateScrollPos(cm, left, top) { |
2630 |
cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, |
2631 |
scrollTop: top == null ? cm.doc.scrollTop : top}; |
2632 |
} |
2633 |
|
2634 |
function addToScrollPos(cm, left, top) { |
2635 |
var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); |
2636 |
var scroll = cm.display.scroller; |
2637 |
pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); |
2638 |
pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); |
2639 |
} |
2640 |
|
2641 |
// API UTILITIES |
2642 |
|
2643 |
function indentLine(cm, n, how, aggressive) { |
2644 |
var doc = cm.doc; |
2645 |
if (how == null) how = "add"; |
2646 |
if (how == "smart") { |
2647 |
if (!cm.doc.mode.indent) how = "prev"; |
2648 |
else var state = getStateBefore(cm, n); |
2649 |
} |
2650 |
|
2651 |
var tabSize = cm.options.tabSize; |
2652 |
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); |
2653 |
var curSpaceString = line.text.match(/^\s*/)[0], indentation; |
2654 |
if (how == "smart") { |
2655 |
indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); |
2656 |
if (indentation == Pass) { |
2657 |
if (!aggressive) return; |
2658 |
how = "prev"; |
2659 |
} |
2660 |
} |
2661 |
if (how == "prev") { |
2662 |
if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); |
2663 |
else indentation = 0; |
2664 |
} else if (how == "add") { |
2665 |
indentation = curSpace + cm.options.indentUnit; |
2666 |
} else if (how == "subtract") { |
2667 |
indentation = curSpace - cm.options.indentUnit; |
2668 |
} else if (typeof how == "number") { |
2669 |
indentation = curSpace + how; |
2670 |
} |
2671 |
indentation = Math.max(0, indentation); |
2672 |
|
2673 |
var indentString = "", pos = 0; |
2674 |
if (cm.options.indentWithTabs) |
2675 |
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} |
2676 |
if (pos < indentation) indentString += spaceStr(indentation - pos); |
2677 |
|
2678 |
if (indentString != curSpaceString) |
2679 |
replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); |
2680 |
line.stateAfter = null; |
2681 |
} |
2682 |
|
2683 |
function changeLine(cm, handle, op) { |
2684 |
var no = handle, line = handle, doc = cm.doc; |
2685 |
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); |
2686 |
else no = lineNo(handle); |
2687 |
if (no == null) return null; |
2688 |
if (op(line, no)) regChange(cm, no, no + 1); |
2689 |
else return null; |
2690 |
return line; |
2691 |
} |
2692 |
|
2693 |
function findPosH(doc, pos, dir, unit, visually) { |
2694 |
var line = pos.line, ch = pos.ch, origDir = dir; |
2695 |
var lineObj = getLine(doc, line); |
2696 |
var possible = true; |
2697 |
function findNextLine() { |
2698 |
var l = line + dir; |
2699 |
if (l < doc.first || l >= doc.first + doc.size) return (possible = false); |
2700 |
line = l; |
2701 |
return lineObj = getLine(doc, l); |
2702 |
} |
2703 |
function moveOnce(boundToLine) { |
2704 |
var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); |
2705 |
if (next == null) { |
2706 |
if (!boundToLine && findNextLine()) { |
2707 |
if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); |
2708 |
else ch = dir < 0 ? lineObj.text.length : 0; |
2709 |
} else return (possible = false); |
2710 |
} else ch = next; |
2711 |
return true; |
2712 |
} |
2713 |
|
2714 |
if (unit == "char") moveOnce(); |
2715 |
else if (unit == "column") moveOnce(true); |
2716 |
else if (unit == "word" || unit == "group") { |
2717 |
var sawType = null, group = unit == "group"; |
2718 |
for (var first = true;; first = false) { |
2719 |
if (dir < 0 && !moveOnce(!first)) break; |
2720 |
var cur = lineObj.text.charAt(ch) || "\n"; |
2721 |
var type = isWordChar(cur) ? "w" |
2722 |
: !group ? null |
2723 |
: /\s/.test(cur) ? null |
2724 |
: "p"; |
2725 |
if (sawType && sawType != type) { |
2726 |
if (dir < 0) {dir = 1; moveOnce();} |
2727 |
break; |
2728 |
} |
2729 |
if (type) sawType = type; |
2730 |
if (dir > 0 && !moveOnce(!first)) break; |
2731 |
} |
2732 |
} |
2733 |
var result = skipAtomic(doc, Pos(line, ch), origDir, true); |
2734 |
if (!possible) result.hitSide = true; |
2735 |
return result; |
2736 |
} |
2737 |
|
2738 |
function findPosV(cm, pos, dir, unit) { |
2739 |
var doc = cm.doc, x = pos.left, y; |
2740 |
if (unit == "page") { |
2741 |
var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); |
2742 |
y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); |
2743 |
} else if (unit == "line") { |
2744 |
y = dir > 0 ? pos.bottom + 3 : pos.top - 3; |
2745 |
} |
2746 |
for (;;) { |
2747 |
var target = coordsChar(cm, x, y); |
2748 |
if (!target.outside) break; |
2749 |
if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } |
2750 |
y += dir * 5; |
2751 |
} |
2752 |
return target; |
2753 |
} |
2754 |
|
2755 |
function findWordAt(line, pos) { |
2756 |
var start = pos.ch, end = pos.ch; |
2757 |
if (line) { |
2758 |
if (pos.xRel < 0 || end == line.length) --start; else ++end; |
2759 |
var startChar = line.charAt(start); |
2760 |
var check = isWordChar(startChar) ? isWordChar |
2761 |
: /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} |
2762 |
: function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; |
2763 |
while (start > 0 && check(line.charAt(start - 1))) --start; |
2764 |
while (end < line.length && check(line.charAt(end))) ++end; |
2765 |
} |
2766 |
return {from: Pos(pos.line, start), to: Pos(pos.line, end)}; |
2767 |
} |
2768 |
|
2769 |
function selectLine(cm, line) { |
2770 |
extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); |
2771 |
} |
2772 |
|
2773 |
// PROTOTYPE |
2774 |
|
2775 |
// The publicly visible API. Note that operation(null, f) means |
2776 |
// 'wrap f in an operation, performed on its `this` parameter' |
2777 |
|
2778 |
CodeMirror.prototype = { |
2779 |
constructor: CodeMirror, |
2780 |
focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);}, |
2781 |
|
2782 |
setOption: function(option, value) { |
2783 |
var options = this.options, old = options[option]; |
2784 |
if (options[option] == value && option != "mode") return; |
2785 |
options[option] = value; |
2786 |
if (optionHandlers.hasOwnProperty(option)) |
2787 |
operation(this, optionHandlers[option])(this, value, old); |
2788 |
}, |
2789 |
|
2790 |
getOption: function(option) {return this.options[option];}, |
2791 |
getDoc: function() {return this.doc;}, |
2792 |
|
2793 |
addKeyMap: function(map, bottom) { |
2794 |
this.state.keyMaps[bottom ? "push" : "unshift"](map); |
2795 |
}, |
2796 |
removeKeyMap: function(map) { |
2797 |
var maps = this.state.keyMaps; |
2798 |
for (var i = 0; i < maps.length; ++i) |
2799 |
if ((typeof map == "string" ? maps[i].name : maps[i]) == map) { |
2800 |
maps.splice(i, 1); |
2801 |
return true; |
2802 |
} |
2803 |
}, |
2804 |
|
2805 |
addOverlay: operation(null, function(spec, options) { |
2806 |
var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); |
2807 |
if (mode.startState) throw new Error("Overlays may not be stateful."); |
2808 |
this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); |
2809 |
this.state.modeGen++; |
2810 |
regChange(this); |
2811 |
}), |
2812 |
removeOverlay: operation(null, function(spec) { |
2813 |
var overlays = this.state.overlays; |
2814 |
for (var i = 0; i < overlays.length; ++i) { |
2815 |
var cur = overlays[i].modeSpec; |
2816 |
if (cur == spec || typeof spec == "string" && cur.name == spec) { |
2817 |
overlays.splice(i, 1); |
2818 |
this.state.modeGen++; |
2819 |
regChange(this); |
2820 |
return; |
2821 |
} |
2822 |
} |
2823 |
}), |
2824 |
|
2825 |
indentLine: operation(null, function(n, dir, aggressive) { |
2826 |
if (typeof dir != "string" && typeof dir != "number") { |
2827 |
if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; |
2828 |
else dir = dir ? "add" : "subtract"; |
2829 |
} |
2830 |
if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); |
2831 |
}), |
2832 |
indentSelection: operation(null, function(how) { |
2833 |
var sel = this.doc.sel; |
2834 |
if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how); |
2835 |
var e = sel.to.line - (sel.to.ch ? 0 : 1); |
2836 |
for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); |
2837 |
}), |
2838 |
|
2839 |
// Fetch the parser token for a given character. Useful for hacks |
2840 |
// that want to inspect the mode state (say, for completion). |
2841 |
getTokenAt: function(pos, precise) { |
2842 |
var doc = this.doc; |
2843 |
pos = clipPos(doc, pos); |
2844 |
var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode; |
2845 |
var line = getLine(doc, pos.line); |
2846 |
var stream = new StringStream(line.text, this.options.tabSize); |
2847 |
while (stream.pos < pos.ch && !stream.eol()) { |
2848 |
stream.start = stream.pos; |
2849 |
var style = mode.token(stream, state); |
2850 |
} |
2851 |
return {start: stream.start, |
2852 |
end: stream.pos, |
2853 |
string: stream.current(), |
2854 |
className: style || null, // Deprecated, use 'type' instead |
2855 |
type: style || null, |
2856 |
state: state}; |
2857 |
}, |
2858 |
|
2859 |
getTokenTypeAt: function(pos) { |
2860 |
pos = clipPos(this.doc, pos); |
2861 |
var styles = getLineStyles(this, getLine(this.doc, pos.line)); |
2862 |
var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; |
2863 |
for (;;) { |
2864 |
var mid = (before + after) >> 1; |
2865 |
if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; |
2866 |
else if (styles[mid * 2 + 1] < ch) before = mid + 1; |
2867 |
else return styles[mid * 2 + 2]; |
2868 |
} |
2869 |
}, |
2870 |
|
2871 |
getStateAfter: function(line, precise) { |
2872 |
var doc = this.doc; |
2873 |
line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); |
2874 |
return getStateBefore(this, line + 1, precise); |
2875 |
}, |
2876 |
|
2877 |
cursorCoords: function(start, mode) { |
2878 |
var pos, sel = this.doc.sel; |
2879 |
if (start == null) pos = sel.head; |
2880 |
else if (typeof start == "object") pos = clipPos(this.doc, start); |
2881 |
else pos = start ? sel.from : sel.to; |
2882 |
return cursorCoords(this, pos, mode || "page"); |
2883 |
}, |
2884 |
|
2885 |
charCoords: function(pos, mode) { |
2886 |
return charCoords(this, clipPos(this.doc, pos), mode || "page"); |
2887 |
}, |
2888 |
|
2889 |
coordsChar: function(coords, mode) { |
2890 |
coords = fromCoordSystem(this, coords, mode || "page"); |
2891 |
return coordsChar(this, coords.left, coords.top); |
2892 |
}, |
2893 |
|
2894 |
lineAtHeight: function(height, mode) { |
2895 |
height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; |
2896 |
return lineAtHeight(this.doc, height + this.display.viewOffset); |
2897 |
}, |
2898 |
heightAtLine: function(line, mode) { |
2899 |
var end = false, last = this.doc.first + this.doc.size - 1; |
2900 |
if (line < this.doc.first) line = this.doc.first; |
2901 |
else if (line > last) { line = last; end = true; } |
2902 |
var lineObj = getLine(this.doc, line); |
2903 |
return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + |
2904 |
(end ? lineObj.height : 0); |
2905 |
}, |
2906 |
|
2907 |
defaultTextHeight: function() { return textHeight(this.display); }, |
2908 |
defaultCharWidth: function() { return charWidth(this.display); }, |
2909 |
|
2910 |
setGutterMarker: operation(null, function(line, gutterID, value) { |
2911 |
return changeLine(this, line, function(line) { |
2912 |
var markers = line.gutterMarkers || (line.gutterMarkers = {}); |
2913 |
markers[gutterID] = value; |
2914 |
if (!value && isEmpty(markers)) line.gutterMarkers = null; |
2915 |
return true; |
2916 |
}); |
2917 |
}), |
2918 |
|
2919 |
clearGutter: operation(null, function(gutterID) { |
2920 |
var cm = this, doc = cm.doc, i = doc.first; |
2921 |
doc.iter(function(line) { |
2922 |
if (line.gutterMarkers && line.gutterMarkers[gutterID]) { |
2923 |
line.gutterMarkers[gutterID] = null; |
2924 |
regChange(cm, i, i + 1); |
2925 |
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; |
2926 |
} |
2927 |
++i; |
2928 |
}); |
2929 |
}), |
2930 |
|
2931 |
addLineClass: operation(null, function(handle, where, cls) { |
2932 |
return changeLine(this, handle, function(line) { |
2933 |
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; |
2934 |
if (!line[prop]) line[prop] = cls; |
2935 |
else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false; |
2936 |
else line[prop] += " " + cls; |
2937 |
return true; |
2938 |
}); |
2939 |
}), |
2940 |
|
2941 |
removeLineClass: operation(null, function(handle, where, cls) { |
2942 |
return changeLine(this, handle, function(line) { |
2943 |
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; |
2944 |
var cur = line[prop]; |
2945 |
if (!cur) return false; |
2946 |
else if (cls == null) line[prop] = null; |
2947 |
else { |
2948 |
var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); |
2949 |
if (!found) return false; |
2950 |
var end = found.index + found[0].length; |
2951 |
line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; |
2952 |
} |
2953 |
return true; |
2954 |
}); |
2955 |
}), |
2956 |
|
2957 |
addLineWidget: operation(null, function(handle, node, options) { |
2958 |
return addLineWidget(this, handle, node, options); |
2959 |
}), |
2960 |
|
2961 |
removeLineWidget: function(widget) { widget.clear(); }, |
2962 |
|
2963 |
lineInfo: function(line) { |
2964 |
if (typeof line == "number") { |
2965 |
if (!isLine(this.doc, line)) return null; |
2966 |
var n = line; |
2967 |
line = getLine(this.doc, line); |
2968 |
if (!line) return null; |
2969 |
} else { |
2970 |
var n = lineNo(line); |
2971 |
if (n == null) return null; |
2972 |
} |
2973 |
return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, |
2974 |
textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, |
2975 |
widgets: line.widgets}; |
2976 |
}, |
2977 |
|
2978 |
getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};}, |
2979 |
|
2980 |
addWidget: function(pos, node, scroll, vert, horiz) { |
2981 |
var display = this.display; |
2982 |
pos = cursorCoords(this, clipPos(this.doc, pos)); |
2983 |
var top = pos.bottom, left = pos.left; |
2984 |
node.style.position = "absolute"; |
2985 |
display.sizer.appendChild(node); |
2986 |
if (vert == "over") { |
2987 |
top = pos.top; |
2988 |
} else if (vert == "above" || vert == "near") { |
2989 |
var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), |
2990 |
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); |
2991 |
// Default to positioning above (if specified and possible); otherwise default to positioning below |
2992 |
if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) |
2993 |
top = pos.top - node.offsetHeight; |
2994 |
else if (pos.bottom + node.offsetHeight <= vspace) |
2995 |
top = pos.bottom; |
2996 |
if (left + node.offsetWidth > hspace) |
2997 |
left = hspace - node.offsetWidth; |
2998 |
} |
2999 |
node.style.top = top + "px"; |
3000 |
node.style.left = node.style.right = ""; |
3001 |
if (horiz == "right") { |
3002 |
left = display.sizer.clientWidth - node.offsetWidth; |
3003 |
node.style.right = "0px"; |
3004 |
} else { |
3005 |
if (horiz == "left") left = 0; |
3006 |
else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; |
3007 |
node.style.left = left + "px"; |
3008 |
} |
3009 |
if (scroll) |
3010 |
scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); |
3011 |
}, |
3012 |
|
3013 |
triggerOnKeyDown: operation(null, onKeyDown), |
3014 |
|
3015 |
execCommand: function(cmd) {return commands[cmd](this);}, |
3016 |
|
3017 |
findPosH: function(from, amount, unit, visually) { |
3018 |
var dir = 1; |
3019 |
if (amount < 0) { dir = -1; amount = -amount; } |
3020 |
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
3021 |
cur = findPosH(this.doc, cur, dir, unit, visually); |
3022 |
if (cur.hitSide) break; |
3023 |
} |
3024 |
return cur; |
3025 |
}, |
3026 |
|
3027 |
moveH: operation(null, function(dir, unit) { |
3028 |
var sel = this.doc.sel, pos; |
3029 |
if (sel.shift || sel.extend || posEq(sel.from, sel.to)) |
3030 |
pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); |
3031 |
else |
3032 |
pos = dir < 0 ? sel.from : sel.to; |
3033 |
extendSelection(this.doc, pos, pos, dir); |
3034 |
}), |
3035 |
|
3036 |
deleteH: operation(null, function(dir, unit) { |
3037 |
var sel = this.doc.sel; |
3038 |
if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); |
3039 |
else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); |
3040 |
this.curOp.userSelChange = true; |
3041 |
}), |
3042 |
|
3043 |
findPosV: function(from, amount, unit, goalColumn) { |
3044 |
var dir = 1, x = goalColumn; |
3045 |
if (amount < 0) { dir = -1; amount = -amount; } |
3046 |
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { |
3047 |
var coords = cursorCoords(this, cur, "div"); |
3048 |
if (x == null) x = coords.left; |
3049 |
else coords.left = x; |
3050 |
cur = findPosV(this, coords, dir, unit); |
3051 |
if (cur.hitSide) break; |
3052 |
} |
3053 |
return cur; |
3054 |
}, |
3055 |
|
3056 |
moveV: operation(null, function(dir, unit) { |
3057 |
var sel = this.doc.sel; |
3058 |
var pos = cursorCoords(this, sel.head, "div"); |
3059 |
if (sel.goalColumn != null) pos.left = sel.goalColumn; |
3060 |
var target = findPosV(this, pos, dir, unit); |
3061 |
|
3062 |
if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); |
3063 |
extendSelection(this.doc, target, target, dir); |
3064 |
sel.goalColumn = pos.left; |
3065 |
}), |
3066 |
|
3067 |
toggleOverwrite: function(value) { |
3068 |
if (value != null && value == this.state.overwrite) return; |
3069 |
if (this.state.overwrite = !this.state.overwrite) |
3070 |
this.display.cursor.className += " CodeMirror-overwrite"; |
3071 |
else |
3072 |
this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); |
3073 |
}, |
3074 |
hasFocus: function() { return this.state.focused; }, |
3075 |
|
3076 |
scrollTo: operation(null, function(x, y) { |
3077 |
updateScrollPos(this, x, y); |
3078 |
}), |
3079 |
getScrollInfo: function() { |
3080 |
var scroller = this.display.scroller, co = scrollerCutOff; |
3081 |
return {left: scroller.scrollLeft, top: scroller.scrollTop, |
3082 |
height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, |
3083 |
clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; |
3084 |
}, |
3085 |
|
3086 |
scrollIntoView: operation(null, function(pos, margin) { |
3087 |
if (typeof pos == "number") pos = Pos(pos, 0); |
3088 |
if (!margin) margin = 0; |
3089 |
var coords = pos; |
3090 |
|
3091 |
if (!pos || pos.line != null) { |
3092 |
this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head; |
3093 |
this.curOp.scrollToPosMargin = margin; |
3094 |
coords = cursorCoords(this, this.curOp.scrollToPos); |
3095 |
} |
3096 |
var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin); |
3097 |
updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); |
3098 |
}), |
3099 |
|
3100 |
setSize: function(width, height) { |
3101 |
function interpret(val) { |
3102 |
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; |
3103 |
} |
3104 |
if (width != null) this.display.wrapper.style.width = interpret(width); |
3105 |
if (height != null) this.display.wrapper.style.height = interpret(height); |
3106 |
this.refresh(); |
3107 |
}, |
3108 |
|
3109 |
on: function(type, f) {on(this, type, f);}, |
3110 |
off: function(type, f) {off(this, type, f);}, |
3111 |
|
3112 |
operation: function(f){return runInOp(this, f);}, |
3113 |
|
3114 |
refresh: operation(null, function() { |
3115 |
clearCaches(this); |
3116 |
updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); |
3117 |
regChange(this); |
3118 |
}), |
3119 |
|
3120 |
swapDoc: operation(null, function(doc) { |
3121 |
var old = this.doc; |
3122 |
old.cm = null; |
3123 |
attachDoc(this, doc); |
3124 |
clearCaches(this); |
3125 |
resetInput(this, true); |
3126 |
updateScrollPos(this, doc.scrollLeft, doc.scrollTop); |
3127 |
return old; |
3128 |
}), |
3129 |
|
3130 |
getInputField: function(){return this.display.input;}, |
3131 |
getWrapperElement: function(){return this.display.wrapper;}, |
3132 |
getScrollerElement: function(){return this.display.scroller;}, |
3133 |
getGutterElement: function(){return this.display.gutters;} |
3134 |
}; |
3135 |
|
3136 |
// OPTION DEFAULTS |
3137 |
|
3138 |
var optionHandlers = CodeMirror.optionHandlers = {}; |
3139 |
|
3140 |
// The default configuration options. |
3141 |
var defaults = CodeMirror.defaults = {}; |
3142 |
|
3143 |
function option(name, deflt, handle, notOnInit) { |
3144 |
CodeMirror.defaults[name] = deflt; |
3145 |
if (handle) optionHandlers[name] = |
3146 |
notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; |
3147 |
} |
3148 |
|
3149 |
var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; |
3150 |
|
3151 |
// These two are, on init, called from the constructor because they |
3152 |
// have to be initialized before the editor can start at all. |
3153 |
option("value", "", function(cm, val) { |
3154 |
cm.setValue(val); |
3155 |
}, true); |
3156 |
option("mode", null, function(cm, val) { |
3157 |
cm.doc.modeOption = val; |
3158 |
loadMode(cm); |
3159 |
}, true); |
3160 |
|
3161 |
option("indentUnit", 2, loadMode, true); |
3162 |
option("indentWithTabs", false); |
3163 |
option("smartIndent", true); |
3164 |
option("tabSize", 4, function(cm) { |
3165 |
loadMode(cm); |
3166 |
clearCaches(cm); |
3167 |
regChange(cm); |
3168 |
}, true); |
3169 |
option("electricChars", true); |
3170 |
option("rtlMoveVisually", !windows); |
3171 |
|
3172 |
option("theme", "default", function(cm) { |
3173 |
themeChanged(cm); |
3174 |
guttersChanged(cm); |
3175 |
}, true); |
3176 |
option("keyMap", "default", keyMapChanged); |
3177 |
option("extraKeys", null); |
3178 |
|
3179 |
option("onKeyEvent", null); |
3180 |
option("onDragEvent", null); |
3181 |
|
3182 |
option("lineWrapping", false, wrappingChanged, true); |
3183 |
option("gutters", [], function(cm) { |
3184 |
setGuttersForLineNumbers(cm.options); |
3185 |
guttersChanged(cm); |
3186 |
}, true); |
3187 |
option("fixedGutter", true, function(cm, val) { |
3188 |
cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; |
3189 |
cm.refresh(); |
3190 |
}, true); |
3191 |
option("coverGutterNextToScrollbar", false, updateScrollbars, true); |
3192 |
option("lineNumbers", false, function(cm) { |
3193 |
setGuttersForLineNumbers(cm.options); |
3194 |
guttersChanged(cm); |
3195 |
}, true); |
3196 |
option("firstLineNumber", 1, guttersChanged, true); |
3197 |
option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); |
3198 |
option("showCursorWhenSelecting", false, updateSelection, true); |
3199 |
|
3200 |
option("readOnly", false, function(cm, val) { |
3201 |
if (val == "nocursor") {onBlur(cm); cm.display.input.blur();} |
3202 |
else if (!val) resetInput(cm, true); |
3203 |
}); |
3204 |
option("dragDrop", true); |
3205 |
|
3206 |
option("cursorBlinkRate", 530); |
3207 |
option("cursorScrollMargin", 0); |
3208 |
option("cursorHeight", 1); |
3209 |
option("workTime", 100); |
3210 |
option("workDelay", 100); |
3211 |
option("flattenSpans", true); |
3212 |
option("pollInterval", 100); |
3213 |
option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); |
3214 |
option("historyEventDelay", 500); |
3215 |
option("viewportMargin", 10, function(cm){cm.refresh();}, true); |
3216 |
option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true); |
3217 |
option("moveInputWithCursor", true, function(cm, val) { |
3218 |
if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; |
3219 |
}); |
3220 |
|
3221 |
option("tabindex", null, function(cm, val) { |
3222 |
cm.display.input.tabIndex = val || ""; |
3223 |
}); |
3224 |
option("autofocus", null); |
3225 |
|
3226 |
// MODE DEFINITION AND QUERYING |
3227 |
|
3228 |
// Known modes, by name and by MIME |
3229 |
var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; |
3230 |
|
3231 |
CodeMirror.defineMode = function(name, mode) { |
3232 |
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; |
3233 |
if (arguments.length > 2) { |
3234 |
mode.dependencies = []; |
3235 |
for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); |
3236 |
} |
3237 |
modes[name] = mode; |
3238 |
}; |
3239 |
|
3240 |
CodeMirror.defineMIME = function(mime, spec) { |
3241 |
mimeModes[mime] = spec; |
3242 |
}; |
3243 |
|
3244 |
CodeMirror.resolveMode = function(spec) { |
3245 |
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { |
3246 |
spec = mimeModes[spec]; |
3247 |
} else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { |
3248 |
var found = mimeModes[spec.name]; |
3249 |
spec = createObj(found, spec); |
3250 |
spec.name = found.name; |
3251 |
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { |
3252 |
return CodeMirror.resolveMode("application/xml"); |
3253 |
} |
3254 |
if (typeof spec == "string") return {name: spec}; |
3255 |
else return spec || {name: "null"}; |
3256 |
}; |
3257 |
|
3258 |
CodeMirror.getMode = function(options, spec) { |
3259 |
spec = CodeMirror.resolveMode(spec); |
3260 |
var mfactory = modes[spec.name]; |
3261 |
if (!mfactory) return CodeMirror.getMode(options, "text/plain"); |
3262 |
var modeObj = mfactory(options, spec); |
3263 |
if (modeExtensions.hasOwnProperty(spec.name)) { |
3264 |
var exts = modeExtensions[spec.name]; |
3265 |
for (var prop in exts) { |
3266 |
if (!exts.hasOwnProperty(prop)) continue; |
3267 |
if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; |
3268 |
modeObj[prop] = exts[prop]; |
3269 |
} |
3270 |
} |
3271 |
modeObj.name = spec.name; |
3272 |
return modeObj; |
3273 |
}; |
3274 |
|
3275 |
CodeMirror.defineMode("null", function() { |
3276 |
return {token: function(stream) {stream.skipToEnd();}}; |
3277 |
}); |
3278 |
CodeMirror.defineMIME("text/plain", "null"); |
3279 |
|
3280 |
var modeExtensions = CodeMirror.modeExtensions = {}; |
3281 |
CodeMirror.extendMode = function(mode, properties) { |
3282 |
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); |
3283 |
copyObj(properties, exts); |
3284 |
}; |
3285 |
|
3286 |
// EXTENSIONS |
3287 |
|
3288 |
CodeMirror.defineExtension = function(name, func) { |
3289 |
CodeMirror.prototype[name] = func; |
3290 |
}; |
3291 |
CodeMirror.defineDocExtension = function(name, func) { |
3292 |
Doc.prototype[name] = func; |
3293 |
}; |
3294 |
CodeMirror.defineOption = option; |
3295 |
|
3296 |
var initHooks = []; |
3297 |
CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; |
3298 |
|
3299 |
// MODE STATE HANDLING |
3300 |
|
3301 |
// Utility functions for working with state. Exported because modes |
3302 |
// sometimes need to do this. |
3303 |
function copyState(mode, state) { |
3304 |
if (state === true) return state; |
3305 |
if (mode.copyState) return mode.copyState(state); |
3306 |
var nstate = {}; |
3307 |
for (var n in state) { |
3308 |
var val = state[n]; |
3309 |
if (val instanceof Array) val = val.concat([]); |
3310 |
nstate[n] = val; |
3311 |
} |
3312 |
return nstate; |
3313 |
} |
3314 |
CodeMirror.copyState = copyState; |
3315 |
|
3316 |
function startState(mode, a1, a2) { |
3317 |
return mode.startState ? mode.startState(a1, a2) : true; |
3318 |
} |
3319 |
CodeMirror.startState = startState; |
3320 |
|
3321 |
CodeMirror.innerMode = function(mode, state) { |
3322 |
while (mode.innerMode) { |
3323 |
var info = mode.innerMode(state); |
3324 |
state = info.state; |
3325 |
mode = info.mode; |
3326 |
} |
3327 |
return info || {mode: mode, state: state}; |
3328 |
}; |
3329 |
|
3330 |
// STANDARD COMMANDS |
3331 |
|
3332 |
var commands = CodeMirror.commands = { |
3333 |
selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));}, |
3334 |
killLine: function(cm) { |
3335 |
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); |
3336 |
if (!sel && cm.getLine(from.line).length == from.ch) |
3337 |
cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); |
3338 |
else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); |
3339 |
}, |
3340 |
deleteLine: function(cm) { |
3341 |
var l = cm.getCursor().line; |
3342 |
cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); |
3343 |
}, |
3344 |
delLineLeft: function(cm) { |
3345 |
var cur = cm.getCursor(); |
3346 |
cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); |
3347 |
}, |
3348 |
undo: function(cm) {cm.undo();}, |
3349 |
redo: function(cm) {cm.redo();}, |
3350 |
goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, |
3351 |
goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, |
3352 |
goLineStart: function(cm) { |
3353 |
cm.extendSelection(lineStart(cm, cm.getCursor().line)); |
3354 |
}, |
3355 |
goLineStartSmart: function(cm) { |
3356 |
var cur = cm.getCursor(), start = lineStart(cm, cur.line); |
3357 |
var line = cm.getLineHandle(start.line); |
3358 |
var order = getOrder(line); |
3359 |
if (!order || order[0].level == 0) { |
3360 |
var firstNonWS = Math.max(0, line.text.search(/\S/)); |
3361 |
var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; |
3362 |
cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); |
3363 |
} else cm.extendSelection(start); |
3364 |
}, |
3365 |
goLineEnd: function(cm) { |
3366 |
cm.extendSelection(lineEnd(cm, cm.getCursor().line)); |
3367 |
}, |
3368 |
goLineRight: function(cm) { |
3369 |
var top = cm.charCoords(cm.getCursor(), "div").top + 5; |
3370 |
cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); |
3371 |
}, |
3372 |
goLineLeft: function(cm) { |
3373 |
var top = cm.charCoords(cm.getCursor(), "div").top + 5; |
3374 |
cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); |
3375 |
}, |
3376 |
goLineUp: function(cm) {cm.moveV(-1, "line");}, |
3377 |
goLineDown: function(cm) {cm.moveV(1, "line");}, |
3378 |
goPageUp: function(cm) {cm.moveV(-1, "page");}, |
3379 |
goPageDown: function(cm) {cm.moveV(1, "page");}, |
3380 |
goCharLeft: function(cm) {cm.moveH(-1, "char");}, |
3381 |
goCharRight: function(cm) {cm.moveH(1, "char");}, |
3382 |
goColumnLeft: function(cm) {cm.moveH(-1, "column");}, |
3383 |
goColumnRight: function(cm) {cm.moveH(1, "column");}, |
3384 |
goWordLeft: function(cm) {cm.moveH(-1, "word");}, |
3385 |
goGroupRight: function(cm) {cm.moveH(1, "group");}, |
3386 |
goGroupLeft: function(cm) {cm.moveH(-1, "group");}, |
3387 |
goWordRight: function(cm) {cm.moveH(1, "word");}, |
3388 |
delCharBefore: function(cm) {cm.deleteH(-1, "char");}, |
3389 |
delCharAfter: function(cm) {cm.deleteH(1, "char");}, |
3390 |
delWordBefore: function(cm) {cm.deleteH(-1, "word");}, |
3391 |
delWordAfter: function(cm) {cm.deleteH(1, "word");}, |
3392 |
delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, |
3393 |
delGroupAfter: function(cm) {cm.deleteH(1, "group");}, |
3394 |
indentAuto: function(cm) {cm.indentSelection("smart");}, |
3395 |
indentMore: function(cm) {cm.indentSelection("add");}, |
3396 |
indentLess: function(cm) {cm.indentSelection("subtract");}, |
3397 |
insertTab: function(cm) {cm.replaceSelection("\t", "end", "+input");}, |
3398 |
defaultTab: function(cm) { |
3399 |
if (cm.somethingSelected()) cm.indentSelection("add"); |
3400 |
else cm.replaceSelection("\t", "end", "+input"); |
3401 |
}, |
3402 |
transposeChars: function(cm) { |
3403 |
var cur = cm.getCursor(), line = cm.getLine(cur.line); |
3404 |
if (cur.ch > 0 && cur.ch < line.length - 1) |
3405 |
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), |
3406 |
Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); |
3407 |
}, |
3408 |
newlineAndIndent: function(cm) { |
3409 |
operation(cm, function() { |
3410 |
cm.replaceSelection("\n", "end", "+input"); |
3411 |
cm.indentLine(cm.getCursor().line, null, true); |
3412 |
})(); |
3413 |
}, |
3414 |
toggleOverwrite: function(cm) {cm.toggleOverwrite();} |
3415 |
}; |
3416 |
|
3417 |
// STANDARD KEYMAPS |
3418 |
|
3419 |
var keyMap = CodeMirror.keyMap = {}; |
3420 |
keyMap.basic = { |
3421 |
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", |
3422 |
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", |
3423 |
"Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", |
3424 |
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite" |
3425 |
}; |
3426 |
// Note that the save and find-related commands aren't defined by |
3427 |
// default. Unknown commands are simply ignored. |
3428 |
keyMap.pcDefault = { |
3429 |
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", |
3430 |
"Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", |
3431 |
"Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", |
3432 |
"Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", |
3433 |
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", |
3434 |
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore", |
3435 |
fallthrough: "basic" |
3436 |
}; |
3437 |
keyMap.macDefault = { |
3438 |
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", |
3439 |
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", |
3440 |
"Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore", |
3441 |
"Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", |
3442 |
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", |
3443 |
"Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", |
3444 |
fallthrough: ["basic", "emacsy"] |
3445 |
}; |
3446 |
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; |
3447 |
keyMap.emacsy = { |
3448 |
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", |
3449 |
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", |
3450 |
"Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", |
3451 |
"Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" |
3452 |
}; |
3453 |
|
3454 |
// KEYMAP DISPATCH |
3455 |
|
3456 |
function getKeyMap(val) { |
3457 |
if (typeof val == "string") return keyMap[val]; |
3458 |
else return val; |
3459 |
} |
3460 |
|
3461 |
function lookupKey(name, maps, handle) { |
3462 |
function lookup(map) { |
3463 |
map = getKeyMap(map); |
3464 |
var found = map[name]; |
3465 |
if (found === false) return "stop"; |
3466 |
if (found != null && handle(found)) return true; |
3467 |
if (map.nofallthrough) return "stop"; |
3468 |
|
3469 |
var fallthrough = map.fallthrough; |
3470 |
if (fallthrough == null) return false; |
3471 |
if (Object.prototype.toString.call(fallthrough) != "[object Array]") |
3472 |
return lookup(fallthrough); |
3473 |
for (var i = 0, e = fallthrough.length; i < e; ++i) { |
3474 |
var done = lookup(fallthrough[i]); |
3475 |
if (done) return done; |
3476 |
} |
3477 |
return false; |
3478 |
} |
3479 |
|
3480 |
for (var i = 0; i < maps.length; ++i) { |
3481 |
var done = lookup(maps[i]); |
3482 |
if (done) return done != "stop"; |
3483 |
} |
3484 |
} |
3485 |
function isModifierKey(event) { |
3486 |
var name = keyNames[event.keyCode]; |
3487 |
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; |
3488 |
} |
3489 |
function keyName(event, noShift) { |
3490 |
if (opera && event.keyCode == 34 && event["char"]) return false; |
3491 |
var name = keyNames[event.keyCode]; |
3492 |
if (name == null || event.altGraphKey) return false; |
3493 |
if (event.altKey) name = "Alt-" + name; |
3494 |
if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; |
3495 |
if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; |
3496 |
if (!noShift && event.shiftKey) name = "Shift-" + name; |
3497 |
return name; |
3498 |
} |
3499 |
CodeMirror.lookupKey = lookupKey; |
3500 |
CodeMirror.isModifierKey = isModifierKey; |
3501 |
CodeMirror.keyName = keyName; |
3502 |
|
3503 |
// FROMTEXTAREA |
3504 |
|
3505 |
CodeMirror.fromTextArea = function(textarea, options) { |
3506 |
if (!options) options = {}; |
3507 |
options.value = textarea.value; |
3508 |
if (!options.tabindex && textarea.tabindex) |
3509 |
options.tabindex = textarea.tabindex; |
3510 |
if (!options.placeholder && textarea.placeholder) |
3511 |
options.placeholder = textarea.placeholder; |
3512 |
// Set autofocus to true if this textarea is focused, or if it has |
3513 |
// autofocus and no other element is focused. |
3514 |
if (options.autofocus == null) { |
3515 |
var hasFocus = document.body; |
3516 |
// doc.activeElement occasionally throws on IE |
3517 |
try { hasFocus = document.activeElement; } catch(e) {} |
3518 |
options.autofocus = hasFocus == textarea || |
3519 |
textarea.getAttribute("autofocus") != null && hasFocus == document.body; |
3520 |
} |
3521 |
|
3522 |
function save() {textarea.value = cm.getValue();} |
3523 |
if (textarea.form) { |
3524 |
on(textarea.form, "submit", save); |
3525 |
// Deplorable hack to make the submit method do the right thing. |
3526 |
if (!options.leaveSubmitMethodAlone) { |
3527 |
var form = textarea.form, realSubmit = form.submit; |
3528 |
try { |
3529 |
var wrappedSubmit = form.submit = function() { |
3530 |
save(); |
3531 |
form.submit = realSubmit; |
3532 |
form.submit(); |
3533 |
form.submit = wrappedSubmit; |
3534 |
}; |
3535 |
} catch(e) {} |
3536 |
} |
3537 |
} |
3538 |
|
3539 |
textarea.style.display = "none"; |
3540 |
var cm = CodeMirror(function(node) { |
3541 |
textarea.parentNode.insertBefore(node, textarea.nextSibling); |
3542 |
}, options); |
3543 |
cm.save = save; |
3544 |
cm.getTextArea = function() { return textarea; }; |
3545 |
cm.toTextArea = function() { |
3546 |
save(); |
3547 |
textarea.parentNode.removeChild(cm.getWrapperElement()); |
3548 |
textarea.style.display = ""; |
3549 |
if (textarea.form) { |
3550 |
off(textarea.form, "submit", save); |
3551 |
if (typeof textarea.form.submit == "function") |
3552 |
textarea.form.submit = realSubmit; |
3553 |
} |
3554 |
}; |
3555 |
return cm; |
3556 |
}; |
3557 |
|
3558 |
// STRING STREAM |
3559 |
|
3560 |
// Fed to the mode parsers, provides helper functions to make |
3561 |
// parsers more succinct. |
3562 |
|
3563 |
// The character stream used by a mode's parser. |
3564 |
function StringStream(string, tabSize) { |
3565 |
this.pos = this.start = 0; |
3566 |
this.string = string; |
3567 |
this.tabSize = tabSize || 8; |
3568 |
this.lastColumnPos = this.lastColumnValue = 0; |
3569 |
} |
3570 |
|
3571 |
StringStream.prototype = { |
3572 |
eol: function() {return this.pos >= this.string.length;}, |
3573 |
sol: function() {return this.pos == 0;}, |
3574 |
peek: function() {return this.string.charAt(this.pos) || undefined;}, |
3575 |
next: function() { |
3576 |
if (this.pos < this.string.length) |
3577 |
return this.string.charAt(this.pos++); |
3578 |
}, |
3579 |
eat: function(match) { |
3580 |
var ch = this.string.charAt(this.pos); |
3581 |
if (typeof match == "string") var ok = ch == match; |
3582 |
else var ok = ch && (match.test ? match.test(ch) : match(ch)); |
3583 |
if (ok) {++this.pos; return ch;} |
3584 |
}, |
3585 |
eatWhile: function(match) { |
3586 |
var start = this.pos; |
3587 |
while (this.eat(match)){} |
3588 |
return this.pos > start; |
3589 |
}, |
3590 |
eatSpace: function() { |
3591 |
var start = this.pos; |
3592 |
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; |
3593 |
return this.pos > start; |
3594 |
}, |
3595 |
skipToEnd: function() {this.pos = this.string.length;}, |
3596 |
skipTo: function(ch) { |
3597 |
var found = this.string.indexOf(ch, this.pos); |
3598 |
if (found > -1) {this.pos = found; return true;} |
3599 |
}, |
3600 |
backUp: function(n) {this.pos -= n;}, |
3601 |
column: function() { |
3602 |
if (this.lastColumnPos < this.start) { |
3603 |
this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); |
3604 |
this.lastColumnPos = this.start; |
3605 |
} |
3606 |
return this.lastColumnValue; |
3607 |
}, |
3608 |
indentation: function() {return countColumn(this.string, null, this.tabSize);}, |
3609 |
match: function(pattern, consume, caseInsensitive) { |
3610 |
if (typeof pattern == "string") { |
3611 |
var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; |
3612 |
var substr = this.string.substr(this.pos, pattern.length); |
3613 |
if (cased(substr) == cased(pattern)) { |
3614 |
if (consume !== false) this.pos += pattern.length; |
3615 |
return true; |
3616 |
} |
3617 |
} else { |
3618 |
var match = this.string.slice(this.pos).match(pattern); |
3619 |
if (match && match.index > 0) return null; |
3620 |
if (match && consume !== false) this.pos += match[0].length; |
3621 |
return match; |
3622 |
} |
3623 |
}, |
3624 |
current: function(){return this.string.slice(this.start, this.pos);} |
3625 |
}; |
3626 |
CodeMirror.StringStream = StringStream; |
3627 |
|
3628 |
// TEXTMARKERS |
3629 |
|
3630 |
function TextMarker(doc, type) { |
3631 |
this.lines = []; |
3632 |
this.type = type; |
3633 |
this.doc = doc; |
3634 |
} |
3635 |
CodeMirror.TextMarker = TextMarker; |
3636 |
|
3637 |
TextMarker.prototype.clear = function() { |
3638 |
if (this.explicitlyCleared) return; |
3639 |
var cm = this.doc.cm, withOp = cm && !cm.curOp; |
3640 |
if (withOp) startOperation(cm); |
3641 |
var min = null, max = null; |
3642 |
for (var i = 0; i < this.lines.length; ++i) { |
3643 |
var line = this.lines[i]; |
3644 |
var span = getMarkedSpanFor(line.markedSpans, this); |
3645 |
if (span.to != null) max = lineNo(line); |
3646 |
line.markedSpans = removeMarkedSpan(line.markedSpans, span); |
3647 |
if (span.from != null) |
3648 |
min = lineNo(line); |
3649 |
else if (this.collapsed && !lineIsHidden(this.doc, line) && cm) |
3650 |
updateLineHeight(line, textHeight(cm.display)); |
3651 |
} |
3652 |
if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { |
3653 |
var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); |
3654 |
if (len > cm.display.maxLineLength) { |
3655 |
cm.display.maxLine = visual; |
3656 |
cm.display.maxLineLength = len; |
3657 |
cm.display.maxLineChanged = true; |
3658 |
} |
3659 |
} |
3660 |
|
3661 |
if (min != null && cm) regChange(cm, min, max + 1); |
3662 |
this.lines.length = 0; |
3663 |
this.explicitlyCleared = true; |
3664 |
if (this.atomic && this.doc.cantEdit) { |
3665 |
this.doc.cantEdit = false; |
3666 |
if (cm) reCheckSelection(cm); |
3667 |
} |
3668 |
if (withOp) endOperation(cm); |
3669 |
signalLater(this, "clear"); |
3670 |
}; |
3671 |
|
3672 |
TextMarker.prototype.find = function() { |
3673 |
var from, to; |
3674 |
for (var i = 0; i < this.lines.length; ++i) { |
3675 |
var line = this.lines[i]; |
3676 |
var span = getMarkedSpanFor(line.markedSpans, this); |
3677 |
if (span.from != null || span.to != null) { |
3678 |
var found = lineNo(line); |
3679 |
if (span.from != null) from = Pos(found, span.from); |
3680 |
if (span.to != null) to = Pos(found, span.to); |
3681 |
} |
3682 |
} |
3683 |
if (this.type == "bookmark") return from; |
3684 |
return from && {from: from, to: to}; |
3685 |
}; |
3686 |
|
3687 |
TextMarker.prototype.changed = function() { |
3688 |
var pos = this.find(), cm = this.doc.cm; |
3689 |
if (!pos || !cm) return; |
3690 |
var line = getLine(this.doc, pos.from.line); |
3691 |
clearCachedMeasurement(cm, line); |
3692 |
if (pos.from.line >= cm.display.showingFrom && pos.from.line < cm.display.showingTo) { |
3693 |
for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { |
3694 |
if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); |
3695 |
break; |
3696 |
} |
3697 |
runInOp(cm, function() { cm.curOp.selectionChanged = true; }); |
3698 |
} |
3699 |
}; |
3700 |
|
3701 |
TextMarker.prototype.attachLine = function(line) { |
3702 |
if (!this.lines.length && this.doc.cm) { |
3703 |
var op = this.doc.cm.curOp; |
3704 |
if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) |
3705 |
(op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); |
3706 |
} |
3707 |
this.lines.push(line); |
3708 |
}; |
3709 |
TextMarker.prototype.detachLine = function(line) { |
3710 |
this.lines.splice(indexOf(this.lines, line), 1); |
3711 |
if (!this.lines.length && this.doc.cm) { |
3712 |
var op = this.doc.cm.curOp; |
3713 |
(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); |
3714 |
} |
3715 |
}; |
3716 |
|
3717 |
function markText(doc, from, to, options, type) { |
3718 |
if (options && options.shared) return markTextShared(doc, from, to, options, type); |
3719 |
if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); |
3720 |
|
3721 |
var marker = new TextMarker(doc, type); |
3722 |
if (type == "range" && !posLess(from, to)) return marker; |
3723 |
if (options) copyObj(options, marker); |
3724 |
if (marker.replacedWith) { |
3725 |
marker.collapsed = true; |
3726 |
marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); |
3727 |
if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; |
3728 |
} |
3729 |
if (marker.collapsed) sawCollapsedSpans = true; |
3730 |
|
3731 |
if (marker.addToHistory) |
3732 |
addToHistory(doc, {from: from, to: to, origin: "markText"}, |
3733 |
{head: doc.sel.head, anchor: doc.sel.anchor}, NaN); |
3734 |
|
3735 |
var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine; |
3736 |
doc.iter(curLine, to.line + 1, function(line) { |
3737 |
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) |
3738 |
updateMaxLine = true; |
3739 |
var span = {from: null, to: null, marker: marker}; |
3740 |
size += line.text.length; |
3741 |
if (curLine == from.line) {span.from = from.ch; size -= from.ch;} |
3742 |
if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;} |
3743 |
if (marker.collapsed) { |
3744 |
if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch); |
3745 |
if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch); |
3746 |
else updateLineHeight(line, 0); |
3747 |
} |
3748 |
addMarkedSpan(line, span); |
3749 |
++curLine; |
3750 |
}); |
3751 |
if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { |
3752 |
if (lineIsHidden(doc, line)) updateLineHeight(line, 0); |
3753 |
}); |
3754 |
|
3755 |
if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); |
3756 |
|
3757 |
if (marker.readOnly) { |
3758 |
sawReadOnlySpans = true; |
3759 |
if (doc.history.done.length || doc.history.undone.length) |
3760 |
doc.clearHistory(); |
3761 |
} |
3762 |
if (marker.collapsed) { |
3763 |
if (collapsedAtStart != collapsedAtEnd) |
3764 |
throw new Error("Inserting collapsed marker overlapping an existing one"); |
3765 |
marker.size = size; |
3766 |
marker.atomic = true; |
3767 |
} |
3768 |
if (cm) { |
3769 |
if (updateMaxLine) cm.curOp.updateMaxLine = true; |
3770 |
if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed) |
3771 |
regChange(cm, from.line, to.line + 1); |
3772 |
if (marker.atomic) reCheckSelection(cm); |
3773 |
} |
3774 |
return marker; |
3775 |
} |
3776 |
|
3777 |
// SHARED TEXTMARKERS |
3778 |
|
3779 |
function SharedTextMarker(markers, primary) { |
3780 |
this.markers = markers; |
3781 |
this.primary = primary; |
3782 |
for (var i = 0, me = this; i < markers.length; ++i) { |
3783 |
markers[i].parent = this; |
3784 |
on(markers[i], "clear", function(){me.clear();}); |
3785 |
} |
3786 |
} |
3787 |
CodeMirror.SharedTextMarker = SharedTextMarker; |
3788 |
|
3789 |
SharedTextMarker.prototype.clear = function() { |
3790 |
if (this.explicitlyCleared) return; |
3791 |
this.explicitlyCleared = true; |
3792 |
for (var i = 0; i < this.markers.length; ++i) |
3793 |
this.markers[i].clear(); |
3794 |
signalLater(this, "clear"); |
3795 |
}; |
3796 |
SharedTextMarker.prototype.find = function() { |
3797 |
return this.primary.find(); |
3798 |
}; |
3799 |
|
3800 |
function markTextShared(doc, from, to, options, type) { |
3801 |
options = copyObj(options); |
3802 |
options.shared = false; |
3803 |
var markers = [markText(doc, from, to, options, type)], primary = markers[0]; |
3804 |
var widget = options.replacedWith; |
3805 |
linkedDocs(doc, function(doc) { |
3806 |
if (widget) options.replacedWith = widget.cloneNode(true); |
3807 |
markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); |
3808 |
for (var i = 0; i < doc.linked.length; ++i) |
3809 |
if (doc.linked[i].isParent) return; |
3810 |
primary = lst(markers); |
3811 |
}); |
3812 |
return new SharedTextMarker(markers, primary); |
3813 |
} |
3814 |
|
3815 |
// TEXTMARKER SPANS |
3816 |
|
3817 |
function getMarkedSpanFor(spans, marker) { |
3818 |
if (spans) for (var i = 0; i < spans.length; ++i) { |
3819 |
var span = spans[i]; |
3820 |
if (span.marker == marker) return span; |
3821 |
} |
3822 |
} |
3823 |
function removeMarkedSpan(spans, span) { |
3824 |
for (var r, i = 0; i < spans.length; ++i) |
3825 |
if (spans[i] != span) (r || (r = [])).push(spans[i]); |
3826 |
return r; |
3827 |
} |
3828 |
function addMarkedSpan(line, span) { |
3829 |
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; |
3830 |
span.marker.attachLine(line); |
3831 |
} |
3832 |
|
3833 |
function markedSpansBefore(old, startCh, isInsert) { |
3834 |
if (old) for (var i = 0, nw; i < old.length; ++i) { |
3835 |
var span = old[i], marker = span.marker; |
3836 |
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); |
3837 |
if (startsBefore || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) { |
3838 |
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); |
3839 |
(nw || (nw = [])).push({from: span.from, |
3840 |
to: endsAfter ? null : span.to, |
3841 |
marker: marker}); |
3842 |
} |
3843 |
} |
3844 |
return nw; |
3845 |
} |
3846 |
|
3847 |
function markedSpansAfter(old, endCh, isInsert) { |
3848 |
if (old) for (var i = 0, nw; i < old.length; ++i) { |
3849 |
var span = old[i], marker = span.marker; |
3850 |
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); |
3851 |
if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) { |
3852 |
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); |
3853 |
(nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, |
3854 |
to: span.to == null ? null : span.to - endCh, |
3855 |
marker: marker}); |
3856 |
} |
3857 |
} |
3858 |
return nw; |
3859 |
} |
3860 |
|
3861 |
function stretchSpansOverChange(doc, change) { |
3862 |
var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; |
3863 |
var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; |
3864 |
if (!oldFirst && !oldLast) return null; |
3865 |
|
3866 |
var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to); |
3867 |
// Get the spans that 'stick out' on both sides |
3868 |
var first = markedSpansBefore(oldFirst, startCh, isInsert); |
3869 |
var last = markedSpansAfter(oldLast, endCh, isInsert); |
3870 |
|
3871 |
// Next, merge those two ends |
3872 |
var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); |
3873 |
if (first) { |
3874 |
// Fix up .to properties of first |
3875 |
for (var i = 0; i < first.length; ++i) { |
3876 |
var span = first[i]; |
3877 |
if (span.to == null) { |
3878 |
var found = getMarkedSpanFor(last, span.marker); |
3879 |
if (!found) span.to = startCh; |
3880 |
else if (sameLine) span.to = found.to == null ? null : found.to + offset; |
3881 |
} |
3882 |
} |
3883 |
} |
3884 |
if (last) { |
3885 |
// Fix up .from in last (or move them into first in case of sameLine) |
3886 |
for (var i = 0; i < last.length; ++i) { |
3887 |
var span = last[i]; |
3888 |
if (span.to != null) span.to += offset; |
3889 |
if (span.from == null) { |
3890 |
var found = getMarkedSpanFor(first, span.marker); |
3891 |
if (!found) { |
3892 |
span.from = offset; |
3893 |
if (sameLine) (first || (first = [])).push(span); |
3894 |
} |
3895 |
} else { |
3896 |
span.from += offset; |
3897 |
if (sameLine) (first || (first = [])).push(span); |
3898 |
} |
3899 |
} |
3900 |
} |
3901 |
if (sameLine && first) { |
3902 |
// Make sure we didn't create any zero-length spans |
3903 |
for (var i = 0; i < first.length; ++i) |
3904 |
if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark") |
3905 |
first.splice(i--, 1); |
3906 |
if (!first.length) first = null; |
3907 |
} |
3908 |
|
3909 |
var newMarkers = [first]; |
3910 |
if (!sameLine) { |
3911 |
// Fill gap with whole-line-spans |
3912 |
var gap = change.text.length - 2, gapMarkers; |
3913 |
if (gap > 0 && first) |
3914 |
for (var i = 0; i < first.length; ++i) |
3915 |
if (first[i].to == null) |
3916 |
(gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); |
3917 |
for (var i = 0; i < gap; ++i) |
3918 |
newMarkers.push(gapMarkers); |
3919 |
newMarkers.push(last); |
3920 |
} |
3921 |
return newMarkers; |
3922 |
} |
3923 |
|
3924 |
function mergeOldSpans(doc, change) { |
3925 |
var old = getOldSpans(doc, change); |
3926 |
var stretched = stretchSpansOverChange(doc, change); |
3927 |
if (!old) return stretched; |
3928 |
if (!stretched) return old; |
3929 |
|
3930 |
for (var i = 0; i < old.length; ++i) { |
3931 |
var oldCur = old[i], stretchCur = stretched[i]; |
3932 |
if (oldCur && stretchCur) { |
3933 |
spans: for (var j = 0; j < stretchCur.length; ++j) { |
3934 |
var span = stretchCur[j]; |
3935 |
for (var k = 0; k < oldCur.length; ++k) |
3936 |
if (oldCur[k].marker == span.marker) continue spans; |
3937 |
oldCur.push(span); |
3938 |
} |
3939 |
} else if (stretchCur) { |
3940 |
old[i] = stretchCur; |
3941 |
} |
3942 |
} |
3943 |
return old; |
3944 |
} |
3945 |
|
3946 |
function removeReadOnlyRanges(doc, from, to) { |
3947 |
var markers = null; |
3948 |
doc.iter(from.line, to.line + 1, function(line) { |
3949 |
if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { |
3950 |
var mark = line.markedSpans[i].marker; |
3951 |
if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) |
3952 |
(markers || (markers = [])).push(mark); |
3953 |
} |
3954 |
}); |
3955 |
if (!markers) return null; |
3956 |
var parts = [{from: from, to: to}]; |
3957 |
for (var i = 0; i < markers.length; ++i) { |
3958 |
var mk = markers[i], m = mk.find(); |
3959 |
for (var j = 0; j < parts.length; ++j) { |
3960 |
var p = parts[j]; |
3961 |
if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue; |
3962 |
var newParts = [j, 1]; |
3963 |
if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) |
3964 |
newParts.push({from: p.from, to: m.from}); |
3965 |
if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) |
3966 |
newParts.push({from: m.to, to: p.to}); |
3967 |
parts.splice.apply(parts, newParts); |
3968 |
j += newParts.length - 1; |
3969 |
} |
3970 |
} |
3971 |
return parts; |
3972 |
} |
3973 |
|
3974 |
function collapsedSpanAt(line, ch) { |
3975 |
var sps = sawCollapsedSpans && line.markedSpans, found; |
3976 |
if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
3977 |
sp = sps[i]; |
3978 |
if (!sp.marker.collapsed) continue; |
3979 |
if ((sp.from == null || sp.from < ch) && |
3980 |
(sp.to == null || sp.to > ch) && |
3981 |
(!found || found.width < sp.marker.width)) |
3982 |
found = sp.marker; |
3983 |
} |
3984 |
return found; |
3985 |
} |
3986 |
function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); } |
3987 |
function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); } |
3988 |
|
3989 |
function visualLine(doc, line) { |
3990 |
var merged; |
3991 |
while (merged = collapsedSpanAtStart(line)) |
3992 |
line = getLine(doc, merged.find().from.line); |
3993 |
return line; |
3994 |
} |
3995 |
|
3996 |
function lineIsHidden(doc, line) { |
3997 |
var sps = sawCollapsedSpans && line.markedSpans; |
3998 |
if (sps) for (var sp, i = 0; i < sps.length; ++i) { |
3999 |
sp = sps[i]; |
4000 |
if (!sp.marker.collapsed) continue; |
4001 |
if (sp.from == null) return true; |
4002 |
if (sp.marker.replacedWith) continue; |
4003 |
if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) |
4004 |
return true; |
4005 |
} |
4006 |
} |
4007 |
function lineIsHiddenInner(doc, line, span) { |
4008 |
if (span.to == null) { |
4009 |
var end = span.marker.find().to, endLine = getLine(doc, end.line); |
4010 |
return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker)); |
4011 |
} |
4012 |
if (span.marker.inclusiveRight && span.to == line.text.length) |
4013 |
return true; |
4014 |
for (var sp, i = 0; i < line.markedSpans.length; ++i) { |
4015 |
sp = line.markedSpans[i]; |
4016 |
if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to && |
4017 |
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) && |
4018 |
lineIsHiddenInner(doc, line, sp)) return true; |
4019 |
} |
4020 |
} |
4021 |
|
4022 |
function detachMarkedSpans(line) { |
4023 |
var spans = line.markedSpans; |
4024 |
if (!spans) return; |
4025 |
for (var i = 0; i < spans.length; ++i) |
4026 |
spans[i].marker.detachLine(line); |
4027 |
line.markedSpans = null; |
4028 |
} |
4029 |
|
4030 |
function attachMarkedSpans(line, spans) { |
4031 |
if (!spans) return; |
4032 |
for (var i = 0; i < spans.length; ++i) |
4033 |
spans[i].marker.attachLine(line); |
4034 |
line.markedSpans = spans; |
4035 |
} |
4036 |
|
4037 |
// LINE WIDGETS |
4038 |
|
4039 |
var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { |
4040 |
for (var opt in options) if (options.hasOwnProperty(opt)) |
4041 |
this[opt] = options[opt]; |
4042 |
this.cm = cm; |
4043 |
this.node = node; |
4044 |
}; |
4045 |
function widgetOperation(f) { |
4046 |
return function() { |
4047 |
var withOp = !this.cm.curOp; |
4048 |
if (withOp) startOperation(this.cm); |
4049 |
try {var result = f.apply(this, arguments);} |
4050 |
finally {if (withOp) endOperation(this.cm);} |
4051 |
return result; |
4052 |
}; |
4053 |
} |
4054 |
LineWidget.prototype.clear = widgetOperation(function() { |
4055 |
var ws = this.line.widgets, no = lineNo(this.line); |
4056 |
if (no == null || !ws) return; |
4057 |
for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); |
4058 |
if (!ws.length) this.line.widgets = null; |
4059 |
updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); |
4060 |
regChange(this.cm, no, no + 1); |
4061 |
}); |
4062 |
LineWidget.prototype.changed = widgetOperation(function() { |
4063 |
var oldH = this.height; |
4064 |
this.height = null; |
4065 |
var diff = widgetHeight(this) - oldH; |
4066 |
if (!diff) return; |
4067 |
updateLineHeight(this.line, this.line.height + diff); |
4068 |
var no = lineNo(this.line); |
4069 |
regChange(this.cm, no, no + 1); |
4070 |
}); |
4071 |
|
4072 |
function widgetHeight(widget) { |
4073 |
if (widget.height != null) return widget.height; |
4074 |
if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) |
4075 |
removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); |
4076 |
return widget.height = widget.node.offsetHeight; |
4077 |
} |
4078 |
|
4079 |
function addLineWidget(cm, handle, node, options) { |
4080 |
var widget = new LineWidget(cm, node, options); |
4081 |
if (widget.noHScroll) cm.display.alignWidgets = true; |
4082 |
changeLine(cm, handle, function(line) { |
4083 |
(line.widgets || (line.widgets = [])).push(widget); |
4084 |
widget.line = line; |
4085 |
if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { |
4086 |
var aboveVisible = heightAtLine(cm, line) < cm.display.scroller.scrollTop; |
4087 |
updateLineHeight(line, line.height + widgetHeight(widget)); |
4088 |
if (aboveVisible) addToScrollPos(cm, 0, widget.height); |
4089 |
} |
4090 |
return true; |
4091 |
}); |
4092 |
return widget; |
4093 |
} |
4094 |
|
4095 |
// LINE DATA STRUCTURE |
4096 |
|
4097 |
// Line objects. These hold state related to a line, including |
4098 |
// highlighting info (the styles array). |
4099 |
function makeLine(text, markedSpans, estimateHeight) { |
4100 |
var line = {text: text}; |
4101 |
attachMarkedSpans(line, markedSpans); |
4102 |
line.height = estimateHeight ? estimateHeight(line) : 1; |
4103 |
return line; |
4104 |
} |
4105 |
|
4106 |
function updateLine(line, text, markedSpans, estimateHeight) { |
4107 |
line.text = text; |
4108 |
if (line.stateAfter) line.stateAfter = null; |
4109 |
if (line.styles) line.styles = null; |
4110 |
if (line.order != null) line.order = null; |
4111 |
detachMarkedSpans(line); |
4112 |
attachMarkedSpans(line, markedSpans); |
4113 |
var estHeight = estimateHeight ? estimateHeight(line) : 1; |
4114 |
if (estHeight != line.height) updateLineHeight(line, estHeight); |
4115 |
} |
4116 |
|
4117 |
function cleanUpLine(line) { |
4118 |
line.parent = null; |
4119 |
detachMarkedSpans(line); |
4120 |
} |
4121 |
|
4122 |
// Run the given mode's parser over a line, update the styles |
4123 |
// array, which contains alternating fragments of text and CSS |
4124 |
// classes. |
4125 |
function runMode(cm, text, mode, state, f) { |
4126 |
var flattenSpans = mode.flattenSpans; |
4127 |
if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; |
4128 |
var curStart = 0, curStyle = null; |
4129 |
var stream = new StringStream(text, cm.options.tabSize), style; |
4130 |
if (text == "" && mode.blankLine) mode.blankLine(state); |
4131 |
while (!stream.eol()) { |
4132 |
if (stream.pos > cm.options.maxHighlightLength) { |
4133 |
flattenSpans = false; |
4134 |
// Webkit seems to refuse to render text nodes longer than 57444 characters |
4135 |
stream.pos = Math.min(text.length, stream.start + 50000); |
4136 |
style = null; |
4137 |
} else { |
4138 |
style = mode.token(stream, state); |
4139 |
} |
4140 |
if (!flattenSpans || curStyle != style) { |
4141 |
if (curStart < stream.start) f(stream.start, curStyle); |
4142 |
curStart = stream.start; curStyle = style; |
4143 |
} |
4144 |
stream.start = stream.pos; |
4145 |
} |
4146 |
if (curStart < stream.pos) f(stream.pos, curStyle); |
4147 |
} |
4148 |
|
4149 |
function highlightLine(cm, line, state) { |
4150 |
// A styles array always starts with a number identifying the |
4151 |
// mode/overlays that it is based on (for easy invalidation). |
4152 |
var st = [cm.state.modeGen]; |
4153 |
// Compute the base array of styles |
4154 |
runMode(cm, line.text, cm.doc.mode, state, function(end, style) {st.push(end, style);}); |
4155 |
|
4156 |
// Run overlays, adjust style array. |
4157 |
for (var o = 0; o < cm.state.overlays.length; ++o) { |
4158 |
var overlay = cm.state.overlays[o], i = 1, at = 0; |
4159 |
runMode(cm, line.text, overlay.mode, true, function(end, style) { |
4160 |
var start = i; |
4161 |
// Ensure there's a token end at the current position, and that i points at it |
4162 |
while (at < end) { |
4163 |
var i_end = st[i]; |
4164 |
if (i_end > end) |
4165 |
st.splice(i, 1, end, st[i+1], i_end); |
4166 |
i += 2; |
4167 |
at = Math.min(end, i_end); |
4168 |
} |
4169 |
if (!style) return; |
4170 |
if (overlay.opaque) { |
4171 |
st.splice(start, i - start, end, style); |
4172 |
i = start + 2; |
4173 |
} else { |
4174 |
for (; start < i; start += 2) { |
4175 |
var cur = st[start+1]; |
4176 |
st[start+1] = cur ? cur + " " + style : style; |
4177 |
} |
4178 |
} |
4179 |
}); |
4180 |
} |
4181 |
|
4182 |
return st; |
4183 |
} |
4184 |
|
4185 |
function getLineStyles(cm, line) { |
4186 |
if (!line.styles || line.styles[0] != cm.state.modeGen) |
4187 |
line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); |
4188 |
return line.styles; |
4189 |
} |
4190 |
|
4191 |
// Lightweight form of highlight -- proceed over this line and |
4192 |
// update state, but don't save a style array. |
4193 |
function processLine(cm, line, state) { |
4194 |
var mode = cm.doc.mode; |
4195 |
var stream = new StringStream(line.text, cm.options.tabSize); |
4196 |
if (line.text == "" && mode.blankLine) mode.blankLine(state); |
4197 |
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { |
4198 |
mode.token(stream, state); |
4199 |
stream.start = stream.pos; |
4200 |
} |
4201 |
} |
4202 |
|
4203 |
var styleToClassCache = {}; |
4204 |
function styleToClass(style) { |
4205 |
if (!style) return null; |
4206 |
return styleToClassCache[style] || |
4207 |
(styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); |
4208 |
} |
4209 |
|
4210 |
function lineContent(cm, realLine, measure) { |
4211 |
var merged, line = realLine, empty = true; |
4212 |
while (merged = collapsedSpanAtStart(line)) |
4213 |
line = getLine(cm.doc, merged.find().from.line); |
4214 |
|
4215 |
var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure, |
4216 |
measure: null, measuredSomething: false, cm: cm}; |
4217 |
if (line.textClass) builder.pre.className = line.textClass; |
4218 |
|
4219 |
do { |
4220 |
if (line.text) empty = false; |
4221 |
builder.measure = line == realLine && measure; |
4222 |
builder.pos = 0; |
4223 |
builder.addToken = builder.measure ? buildTokenMeasure : buildToken; |
4224 |
if ((ie || webkit) && cm.getOption("lineWrapping")) |
4225 |
builder.addToken = buildTokenSplitSpaces(builder.addToken); |
4226 |
var next = insertLineContent(line, builder, getLineStyles(cm, line)); |
4227 |
if (measure && line == realLine && !builder.measuredSomething) { |
4228 |
measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); |
4229 |
builder.measuredSomething = true; |
4230 |
} |
4231 |
if (next) line = getLine(cm.doc, next.to.line); |
4232 |
} while (next); |
4233 |
|
4234 |
if (measure && !builder.measuredSomething && !measure[0]) |
4235 |
measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); |
4236 |
if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) |
4237 |
builder.pre.appendChild(document.createTextNode("\u00a0")); |
4238 |
|
4239 |
var order; |
4240 |
// Work around problem with the reported dimensions of single-char |
4241 |
// direction spans on IE (issue #1129). See also the comment in |
4242 |
// cursorCoords. |
4243 |
if (measure && ie && (order = getOrder(line))) { |
4244 |
var l = order.length - 1; |
4245 |
if (order[l].from == order[l].to) --l; |
4246 |
var last = order[l], prev = order[l - 1]; |
4247 |
if (last.from + 1 == last.to && prev && last.level < prev.level) { |
4248 |
var span = measure[builder.pos - 1]; |
4249 |
if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), |
4250 |
span.nextSibling); |
4251 |
} |
4252 |
} |
4253 |
|
4254 |
signal(cm, "renderLine", cm, realLine, builder.pre); |
4255 |
return builder.pre; |
4256 |
} |
4257 |
|
4258 |
var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g; |
4259 |
function buildToken(builder, text, style, startStyle, endStyle) { |
4260 |
if (!text) return; |
4261 |
if (!tokenSpecialChars.test(text)) { |
4262 |
builder.col += text.length; |
4263 |
var content = document.createTextNode(text); |
4264 |
} else { |
4265 |
var content = document.createDocumentFragment(), pos = 0; |
4266 |
while (true) { |
4267 |
tokenSpecialChars.lastIndex = pos; |
4268 |
var m = tokenSpecialChars.exec(text); |
4269 |
var skipped = m ? m.index - pos : text.length - pos; |
4270 |
if (skipped) { |
4271 |
content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); |
4272 |
builder.col += skipped; |
4273 |
} |
4274 |
if (!m) break; |
4275 |
pos += skipped + 1; |
4276 |
if (m[0] == "\t") { |
4277 |
var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; |
4278 |
content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); |
4279 |
builder.col += tabWidth; |
4280 |
} else { |
4281 |
var token = elt("span", "\u2022", "cm-invalidchar"); |
4282 |
token.title = "\\u" + m[0].charCodeAt(0).toString(16); |
4283 |
content.appendChild(token); |
4284 |
builder.col += 1; |
4285 |
} |
4286 |
} |
4287 |
} |
4288 |
if (style || startStyle || endStyle || builder.measure) { |
4289 |
var fullStyle = style || ""; |
4290 |
if (startStyle) fullStyle += startStyle; |
4291 |
if (endStyle) fullStyle += endStyle; |
4292 |
return builder.pre.appendChild(elt("span", [content], fullStyle)); |
4293 |
} |
4294 |
builder.pre.appendChild(content); |
4295 |
} |
4296 |
|
4297 |
function buildTokenMeasure(builder, text, style, startStyle, endStyle) { |
4298 |
var wrapping = builder.cm.options.lineWrapping; |
4299 |
for (var i = 0; i < text.length; ++i) { |
4300 |
var ch = text.charAt(i), start = i == 0; |
4301 |
if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) { |
4302 |
ch = text.slice(i, i + 2); |
4303 |
++i; |
4304 |
} else if (i && wrapping && spanAffectsWrapping(text, i)) { |
4305 |
builder.pre.appendChild(elt("wbr")); |
4306 |
} |
4307 |
var span = builder.measure[builder.pos] = |
4308 |
buildToken(builder, ch, style, |
4309 |
start && startStyle, i == text.length - 1 && endStyle); |
4310 |
// In IE single-space nodes wrap differently than spaces |
4311 |
// embedded in larger text nodes, except when set to |
4312 |
// white-space: normal (issue #1268). |
4313 |
if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && |
4314 |
i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) |
4315 |
span.style.whiteSpace = "normal"; |
4316 |
builder.pos += ch.length; |
4317 |
} |
4318 |
if (text.length) builder.measuredSomething = true; |
4319 |
} |
4320 |
|
4321 |
function buildTokenSplitSpaces(inner) { |
4322 |
function split(old) { |
4323 |
var out = " "; |
4324 |
for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; |
4325 |
out += " "; |
4326 |
return out; |
4327 |
} |
4328 |
return function(builder, text, style, startStyle, endStyle) { |
4329 |
return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle); |
4330 |
}; |
4331 |
} |
4332 |
|
4333 |
function buildCollapsedSpan(builder, size, widget) { |
4334 |
if (widget) { |
4335 |
if (!builder.display) widget = widget.cloneNode(true); |
4336 |
if (builder.measure) { |
4337 |
builder.measure[builder.pos] = size ? widget |
4338 |
: builder.pre.appendChild(zeroWidthElement(builder.cm.display.measure)); |
4339 |
builder.measuredSomething = true; |
4340 |
} |
4341 |
builder.pre.appendChild(widget); |
4342 |
} |
4343 |
builder.pos += size; |
4344 |
} |
4345 |
|
4346 |
// Outputs a number of spans to make up a line, taking highlighting |
4347 |
// and marked text into account. |
4348 |
function insertLineContent(line, builder, styles) { |
4349 |
var spans = line.markedSpans, allText = line.text, at = 0; |
4350 |
if (!spans) { |
4351 |
for (var i = 1; i < styles.length; i+=2) |
4352 |
builder.addToken(builder, allText.slice(at, at = styles[i]), styleToClass(styles[i+1])); |
4353 |
return; |
4354 |
} |
4355 |
|
4356 |
var len = allText.length, pos = 0, i = 1, text = "", style; |
4357 |
var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed; |
4358 |
for (;;) { |
4359 |
if (nextChange == pos) { // Update current marker set |
4360 |
spanStyle = spanEndStyle = spanStartStyle = ""; |
4361 |
collapsed = null; nextChange = Infinity; |
4362 |
var foundBookmark = null; |
4363 |
for (var j = 0; j < spans.length; ++j) { |
4364 |
var sp = spans[j], m = sp.marker; |
4365 |
if (sp.from <= pos && (sp.to == null || sp.to > pos)) { |
4366 |
if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } |
4367 |
if (m.className) spanStyle += " " + m.className; |
4368 |
if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; |
4369 |
if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; |
4370 |
if (m.collapsed && (!collapsed || collapsed.marker.size < m.size)) |
4371 |
collapsed = sp; |
4372 |
} else if (sp.from > pos && nextChange > sp.from) { |
4373 |
nextChange = sp.from; |
4374 |
} |
4375 |
if (m.type == "bookmark" && sp.from == pos && m.replacedWith) |
4376 |
foundBookmark = m.replacedWith; |
4377 |
} |
4378 |
if (collapsed && (collapsed.from || 0) == pos) { |
4379 |
buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, |
4380 |
collapsed.from != null && collapsed.marker.replacedWith); |
4381 |
if (collapsed.to == null) return collapsed.marker.find(); |
4382 |
} |
4383 |
if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark); |
4384 |
} |
4385 |
if (pos >= len) break; |
4386 |
|
4387 |
var upto = Math.min(len, nextChange); |
4388 |
while (true) { |
4389 |
if (text) { |
4390 |
var end = pos + text.length; |
4391 |
if (!collapsed) { |
4392 |
var tokenText = end > upto ? text.slice(0, upto - pos) : text; |
4393 |
builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, |
4394 |
spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : ""); |
4395 |
} |
4396 |
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} |
4397 |
pos = end; |
4398 |
spanStartStyle = ""; |
4399 |
} |
4400 |
text = allText.slice(at, at = styles[i++]); |
4401 |
style = styleToClass(styles[i++]); |
4402 |
} |
4403 |
} |
4404 |
} |
4405 |
|
4406 |
// DOCUMENT DATA STRUCTURE |
4407 |
|
4408 |
function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { |
4409 |
function spansFor(n) {return markedSpans ? markedSpans[n] : null;} |
4410 |
function update(line, text, spans) { |
4411 |
updateLine(line, text, spans, estimateHeight); |
4412 |
signalLater(line, "change", line, change); |
4413 |
} |
4414 |
|
4415 |
var from = change.from, to = change.to, text = change.text; |
4416 |
var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); |
4417 |
var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; |
4418 |
|
4419 |
// First adjust the line structure |
4420 |
if (from.ch == 0 && to.ch == 0 && lastText == "") { |
4421 |
// This is a whole-line replace. Treated specially to make |
4422 |
// sure line objects move the way they are supposed to. |
4423 |
for (var i = 0, e = text.length - 1, added = []; i < e; ++i) |
4424 |
added.push(makeLine(text[i], spansFor(i), estimateHeight)); |
4425 |
update(lastLine, lastLine.text, lastSpans); |
4426 |
if (nlines) doc.remove(from.line, nlines); |
4427 |
if (added.length) doc.insert(from.line, added); |
4428 |
} else if (firstLine == lastLine) { |
4429 |
if (text.length == 1) { |
4430 |
update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); |
4431 |
} else { |
4432 |
for (var added = [], i = 1, e = text.length - 1; i < e; ++i) |
4433 |
added.push(makeLine(text[i], spansFor(i), estimateHeight)); |
4434 |
added.push(makeLine(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); |
4435 |
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
4436 |
doc.insert(from.line + 1, added); |
4437 |
} |
4438 |
} else if (text.length == 1) { |
4439 |
update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); |
4440 |
doc.remove(from.line + 1, nlines); |
4441 |
} else { |
4442 |
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); |
4443 |
update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); |
4444 |
for (var i = 1, e = text.length - 1, added = []; i < e; ++i) |
4445 |
added.push(makeLine(text[i], spansFor(i), estimateHeight)); |
4446 |
if (nlines > 1) doc.remove(from.line + 1, nlines - 1); |
4447 |
doc.insert(from.line + 1, added); |
4448 |
} |
4449 |
|
4450 |
signalLater(doc, "change", doc, change); |
4451 |
setSelection(doc, selAfter.anchor, selAfter.head, null, true); |
4452 |
} |
4453 |
|
4454 |
function LeafChunk(lines) { |
4455 |
this.lines = lines; |
4456 |
this.parent = null; |
4457 |
for (var i = 0, e = lines.length, height = 0; i < e; ++i) { |
4458 |
lines[i].parent = this; |
4459 |
height += lines[i].height; |
4460 |
} |
4461 |
this.height = height; |
4462 |
} |
4463 |
|
4464 |
LeafChunk.prototype = { |
4465 |
chunkSize: function() { return this.lines.length; }, |
4466 |
removeInner: function(at, n) { |
4467 |
for (var i = at, e = at + n; i < e; ++i) { |
4468 |
var line = this.lines[i]; |
4469 |
this.height -= line.height; |
4470 |
cleanUpLine(line); |
4471 |
signalLater(line, "delete"); |
4472 |
} |
4473 |
this.lines.splice(at, n); |
4474 |
}, |
4475 |
collapse: function(lines) { |
4476 |
lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); |
4477 |
}, |
4478 |
insertInner: function(at, lines, height) { |
4479 |
this.height += height; |
4480 |
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); |
4481 |
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; |
4482 |
}, |
4483 |
iterN: function(at, n, op) { |
4484 |
for (var e = at + n; at < e; ++at) |
4485 |
if (op(this.lines[at])) return true; |
4486 |
} |
4487 |
}; |
4488 |
|
4489 |
function BranchChunk(children) { |
4490 |
this.children = children; |
4491 |
var size = 0, height = 0; |
4492 |
for (var i = 0, e = children.length; i < e; ++i) { |
4493 |
var ch = children[i]; |
4494 |
size += ch.chunkSize(); height += ch.height; |
4495 |
ch.parent = this; |
4496 |
} |
4497 |
this.size = size; |
4498 |
this.height = height; |
4499 |
this.parent = null; |
4500 |
} |
4501 |
|
4502 |
BranchChunk.prototype = { |
4503 |
chunkSize: function() { return this.size; }, |
4504 |
removeInner: function(at, n) { |
4505 |
this.size -= n; |
4506 |
for (var i = 0; i < this.children.length; ++i) { |
4507 |
var child = this.children[i], sz = child.chunkSize(); |
4508 |
if (at < sz) { |
4509 |
var rm = Math.min(n, sz - at), oldHeight = child.height; |
4510 |
child.removeInner(at, rm); |
4511 |
this.height -= oldHeight - child.height; |
4512 |
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } |
4513 |
if ((n -= rm) == 0) break; |
4514 |
at = 0; |
4515 |
} else at -= sz; |
4516 |
} |
4517 |
if (this.size - n < 25) { |
4518 |
var lines = []; |
4519 |
this.collapse(lines); |
4520 |
this.children = [new LeafChunk(lines)]; |
4521 |
this.children[0].parent = this; |
4522 |
} |
4523 |
}, |
4524 |
collapse: function(lines) { |
4525 |
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); |
4526 |
}, |
4527 |
insertInner: function(at, lines, height) { |
4528 |
this.size += lines.length; |
4529 |
this.height += height; |
4530 |
for (var i = 0, e = this.children.length; i < e; ++i) { |
4531 |
var child = this.children[i], sz = child.chunkSize(); |
4532 |
if (at <= sz) { |
4533 |
child.insertInner(at, lines, height); |
4534 |
if (child.lines && child.lines.length > 50) { |
4535 |
while (child.lines.length > 50) { |
4536 |
var spilled = child.lines.splice(child.lines.length - 25, 25); |
4537 |
var newleaf = new LeafChunk(spilled); |
4538 |
child.height -= newleaf.height; |
4539 |
this.children.splice(i + 1, 0, newleaf); |
4540 |
newleaf.parent = this; |
4541 |
} |
4542 |
this.maybeSpill(); |
4543 |
} |
4544 |
break; |
4545 |
} |
4546 |
at -= sz; |
4547 |
} |
4548 |
}, |
4549 |
maybeSpill: function() { |
4550 |
if (this.children.length <= 10) return; |
4551 |
var me = this; |
4552 |
do { |
4553 |
var spilled = me.children.splice(me.children.length - 5, 5); |
4554 |
var sibling = new BranchChunk(spilled); |
4555 |
if (!me.parent) { // Become the parent node |
4556 |
var copy = new BranchChunk(me.children); |
4557 |
copy.parent = me; |
4558 |
me.children = [copy, sibling]; |
4559 |
me = copy; |
4560 |
} else { |
4561 |
me.size -= sibling.size; |
4562 |
me.height -= sibling.height; |
4563 |
var myIndex = indexOf(me.parent.children, me); |
4564 |
me.parent.children.splice(myIndex + 1, 0, sibling); |
4565 |
} |
4566 |
sibling.parent = me.parent; |
4567 |
} while (me.children.length > 10); |
4568 |
me.parent.maybeSpill(); |
4569 |
}, |
4570 |
iterN: function(at, n, op) { |
4571 |
for (var i = 0, e = this.children.length; i < e; ++i) { |
4572 |
var child = this.children[i], sz = child.chunkSize(); |
4573 |
if (at < sz) { |
4574 |
var used = Math.min(n, sz - at); |
4575 |
if (child.iterN(at, used, op)) return true; |
4576 |
if ((n -= used) == 0) break; |
4577 |
at = 0; |
4578 |
} else at -= sz; |
4579 |
} |
4580 |
} |
4581 |
}; |
4582 |
|
4583 |
var nextDocId = 0; |
4584 |
var Doc = CodeMirror.Doc = function(text, mode, firstLine) { |
4585 |
if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); |
4586 |
if (firstLine == null) firstLine = 0; |
4587 |
|
4588 |
BranchChunk.call(this, [new LeafChunk([makeLine("", null)])]); |
4589 |
this.first = firstLine; |
4590 |
this.scrollTop = this.scrollLeft = 0; |
4591 |
this.cantEdit = false; |
4592 |
this.history = makeHistory(); |
4593 |
this.cleanGeneration = 1; |
4594 |
this.frontier = firstLine; |
4595 |
var start = Pos(firstLine, 0); |
4596 |
this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; |
4597 |
this.id = ++nextDocId; |
4598 |
this.modeOption = mode; |
4599 |
|
4600 |
if (typeof text == "string") text = splitLines(text); |
4601 |
updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); |
4602 |
}; |
4603 |
|
4604 |
Doc.prototype = createObj(BranchChunk.prototype, { |
4605 |
constructor: Doc, |
4606 |
iter: function(from, to, op) { |
4607 |
if (op) this.iterN(from - this.first, to - from, op); |
4608 |
else this.iterN(this.first, this.first + this.size, from); |
4609 |
}, |
4610 |
|
4611 |
insert: function(at, lines) { |
4612 |
var height = 0; |
4613 |
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; |
4614 |
this.insertInner(at - this.first, lines, height); |
4615 |
}, |
4616 |
remove: function(at, n) { this.removeInner(at - this.first, n); }, |
4617 |
|
4618 |
getValue: function(lineSep) { |
4619 |
var lines = getLines(this, this.first, this.first + this.size); |
4620 |
if (lineSep === false) return lines; |
4621 |
return lines.join(lineSep || "\n"); |
4622 |
}, |
4623 |
setValue: function(code) { |
4624 |
var top = Pos(this.first, 0), last = this.first + this.size - 1; |
4625 |
makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), |
4626 |
text: splitLines(code), origin: "setValue"}, |
4627 |
{head: top, anchor: top}, true); |
4628 |
}, |
4629 |
replaceRange: function(code, from, to, origin) { |
4630 |
from = clipPos(this, from); |
4631 |
to = to ? clipPos(this, to) : from; |
4632 |
replaceRange(this, code, from, to, origin); |
4633 |
}, |
4634 |
getRange: function(from, to, lineSep) { |
4635 |
var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); |
4636 |
if (lineSep === false) return lines; |
4637 |
return lines.join(lineSep || "\n"); |
4638 |
}, |
4639 |
|
4640 |
getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, |
4641 |
setLine: function(line, text) { |
4642 |
if (isLine(this, line)) |
4643 |
replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); |
4644 |
}, |
4645 |
removeLine: function(line) { |
4646 |
if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); |
4647 |
else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); |
4648 |
}, |
4649 |
|
4650 |
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, |
4651 |
getLineNumber: function(line) {return lineNo(line);}, |
4652 |
|
4653 |
lineCount: function() {return this.size;}, |
4654 |
firstLine: function() {return this.first;}, |
4655 |
lastLine: function() {return this.first + this.size - 1;}, |
4656 |
|
4657 |
clipPos: function(pos) {return clipPos(this, pos);}, |
4658 |
|
4659 |
getCursor: function(start) { |
4660 |
var sel = this.sel, pos; |
4661 |
if (start == null || start == "head") pos = sel.head; |
4662 |
else if (start == "anchor") pos = sel.anchor; |
4663 |
else if (start == "end" || start === false) pos = sel.to; |
4664 |
else pos = sel.from; |
4665 |
return copyPos(pos); |
4666 |
}, |
4667 |
somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);}, |
4668 |
|
4669 |
setCursor: docOperation(function(line, ch, extend) { |
4670 |
var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); |
4671 |
if (extend) extendSelection(this, pos); |
4672 |
else setSelection(this, pos, pos); |
4673 |
}), |
4674 |
setSelection: docOperation(function(anchor, head) { |
4675 |
setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor)); |
4676 |
}), |
4677 |
extendSelection: docOperation(function(from, to) { |
4678 |
extendSelection(this, clipPos(this, from), to && clipPos(this, to)); |
4679 |
}), |
4680 |
|
4681 |
getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);}, |
4682 |
replaceSelection: function(code, collapse, origin) { |
4683 |
makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); |
4684 |
}, |
4685 |
undo: docOperation(function() {makeChangeFromHistory(this, "undo");}), |
4686 |
redo: docOperation(function() {makeChangeFromHistory(this, "redo");}), |
4687 |
|
4688 |
setExtending: function(val) {this.sel.extend = val;}, |
4689 |
|
4690 |
historySize: function() { |
4691 |
var hist = this.history; |
4692 |
return {undo: hist.done.length, redo: hist.undone.length}; |
4693 |
}, |
4694 |
clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);}, |
4695 |
|
4696 |
markClean: function() { |
4697 |
this.cleanGeneration = this.changeGeneration(); |
4698 |
}, |
4699 |
changeGeneration: function() { |
4700 |
this.history.lastOp = this.history.lastOrigin = null; |
4701 |
return this.history.generation; |
4702 |
}, |
4703 |
isClean: function (gen) { |
4704 |
return this.history.generation == (gen || this.cleanGeneration); |
4705 |
}, |
4706 |
|
4707 |
getHistory: function() { |
4708 |
return {done: copyHistoryArray(this.history.done), |
4709 |
undone: copyHistoryArray(this.history.undone)}; |
4710 |
}, |
4711 |
setHistory: function(histData) { |
4712 |
var hist = this.history = makeHistory(this.history.maxGeneration); |
4713 |
hist.done = histData.done.slice(0); |
4714 |
hist.undone = histData.undone.slice(0); |
4715 |
}, |
4716 |
|
4717 |
markText: function(from, to, options) { |
4718 |
return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); |
4719 |
}, |
4720 |
setBookmark: function(pos, options) { |
4721 |
var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), |
4722 |
insertLeft: options && options.insertLeft}; |
4723 |
pos = clipPos(this, pos); |
4724 |
return markText(this, pos, pos, realOpts, "bookmark"); |
4725 |
}, |
4726 |
findMarksAt: function(pos) { |
4727 |
pos = clipPos(this, pos); |
4728 |
var markers = [], spans = getLine(this, pos.line).markedSpans; |
4729 |
if (spans) for (var i = 0; i < spans.length; ++i) { |
4730 |
var span = spans[i]; |
4731 |
if ((span.from == null || span.from <= pos.ch) && |
4732 |
(span.to == null || span.to >= pos.ch)) |
4733 |
markers.push(span.marker.parent || span.marker); |
4734 |
} |
4735 |
return markers; |
4736 |
}, |
4737 |
getAllMarks: function() { |
4738 |
var markers = []; |
4739 |
this.iter(function(line) { |
4740 |
var sps = line.markedSpans; |
4741 |
if (sps) for (var i = 0; i < sps.length; ++i) |
4742 |
if (sps[i].from != null) markers.push(sps[i].marker); |
4743 |
}); |
4744 |
return markers; |
4745 |
}, |
4746 |
|
4747 |
posFromIndex: function(off) { |
4748 |
var ch, lineNo = this.first; |
4749 |
this.iter(function(line) { |
4750 |
var sz = line.text.length + 1; |
4751 |
if (sz > off) { ch = off; return true; } |
4752 |
off -= sz; |
4753 |
++lineNo; |
4754 |
}); |
4755 |
return clipPos(this, Pos(lineNo, ch)); |
4756 |
}, |
4757 |
indexFromPos: function (coords) { |
4758 |
coords = clipPos(this, coords); |
4759 |
var index = coords.ch; |
4760 |
if (coords.line < this.first || coords.ch < 0) return 0; |
4761 |
this.iter(this.first, coords.line, function (line) { |
4762 |
index += line.text.length + 1; |
4763 |
}); |
4764 |
return index; |
4765 |
}, |
4766 |
|
4767 |
copy: function(copyHistory) { |
4768 |
var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); |
4769 |
doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; |
4770 |
doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, |
4771 |
shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; |
4772 |
if (copyHistory) { |
4773 |
doc.history.undoDepth = this.history.undoDepth; |
4774 |
doc.setHistory(this.getHistory()); |
4775 |
} |
4776 |
return doc; |
4777 |
}, |
4778 |
|
4779 |
linkedDoc: function(options) { |
4780 |
if (!options) options = {}; |
4781 |
var from = this.first, to = this.first + this.size; |
4782 |
if (options.from != null && options.from > from) from = options.from; |
4783 |
if (options.to != null && options.to < to) to = options.to; |
4784 |
var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); |
4785 |
if (options.sharedHist) copy.history = this.history; |
4786 |
(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); |
4787 |
copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; |
4788 |
return copy; |
4789 |
}, |
4790 |
unlinkDoc: function(other) { |
4791 |
if (other instanceof CodeMirror) other = other.doc; |
4792 |
if (this.linked) for (var i = 0; i < this.linked.length; ++i) { |
4793 |
var link = this.linked[i]; |
4794 |
if (link.doc != other) continue; |
4795 |
this.linked.splice(i, 1); |
4796 |
other.unlinkDoc(this); |
4797 |
break; |
4798 |
} |
4799 |
// If the histories were shared, split them again |
4800 |
if (other.history == this.history) { |
4801 |
var splitIds = [other.id]; |
4802 |
linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); |
4803 |
other.history = makeHistory(); |
4804 |
other.history.done = copyHistoryArray(this.history.done, splitIds); |
4805 |
other.history.undone = copyHistoryArray(this.history.undone, splitIds); |
4806 |
} |
4807 |
}, |
4808 |
iterLinkedDocs: function(f) {linkedDocs(this, f);}, |
4809 |
|
4810 |
getMode: function() {return this.mode;}, |
4811 |
getEditor: function() {return this.cm;} |
4812 |
}); |
4813 |
|
4814 |
Doc.prototype.eachLine = Doc.prototype.iter; |
4815 |
|
4816 |
// The Doc methods that should be available on CodeMirror instances |
4817 |
var dontDelegate = "iter insert remove copy getEditor".split(" "); |
4818 |
for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) |
4819 |
CodeMirror.prototype[prop] = (function(method) { |
4820 |
return function() {return method.apply(this.doc, arguments);}; |
4821 |
})(Doc.prototype[prop]); |
4822 |
|
4823 |
function linkedDocs(doc, f, sharedHistOnly) { |
4824 |
function propagate(doc, skip, sharedHist) { |
4825 |
if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { |
4826 |
var rel = doc.linked[i]; |
4827 |
if (rel.doc == skip) continue; |
4828 |
var shared = sharedHist && rel.sharedHist; |
4829 |
if (sharedHistOnly && !shared) continue; |
4830 |
f(rel.doc, shared); |
4831 |
propagate(rel.doc, doc, shared); |
4832 |
} |
4833 |
} |
4834 |
propagate(doc, null, true); |
4835 |
} |
4836 |
|
4837 |
function attachDoc(cm, doc) { |
4838 |
if (doc.cm) throw new Error("This document is already in use."); |
4839 |
cm.doc = doc; |
4840 |
doc.cm = cm; |
4841 |
estimateLineHeights(cm); |
4842 |
loadMode(cm); |
4843 |
if (!cm.options.lineWrapping) computeMaxLength(cm); |
4844 |
cm.options.mode = doc.modeOption; |
4845 |
regChange(cm); |
4846 |
} |
4847 |
|
4848 |
// LINE UTILITIES |
4849 |
|
4850 |
function getLine(chunk, n) { |
4851 |
n -= chunk.first; |
4852 |
while (!chunk.lines) { |
4853 |
for (var i = 0;; ++i) { |
4854 |
var child = chunk.children[i], sz = child.chunkSize(); |
4855 |
if (n < sz) { chunk = child; break; } |
4856 |
n -= sz; |
4857 |
} |
4858 |
} |
4859 |
return chunk.lines[n]; |
4860 |
} |
4861 |
|
4862 |
function getBetween(doc, start, end) { |
4863 |
var out = [], n = start.line; |
4864 |
doc.iter(start.line, end.line + 1, function(line) { |
4865 |
var text = line.text; |
4866 |
if (n == end.line) text = text.slice(0, end.ch); |
4867 |
if (n == start.line) text = text.slice(start.ch); |
4868 |
out.push(text); |
4869 |
++n; |
4870 |
}); |
4871 |
return out; |
4872 |
} |
4873 |
function getLines(doc, from, to) { |
4874 |
var out = []; |
4875 |
doc.iter(from, to, function(line) { out.push(line.text); }); |
4876 |
return out; |
4877 |
} |
4878 |
|
4879 |
function updateLineHeight(line, height) { |
4880 |
var diff = height - line.height; |
4881 |
for (var n = line; n; n = n.parent) n.height += diff; |
4882 |
} |
4883 |
|
4884 |
function lineNo(line) { |
4885 |
if (line.parent == null) return null; |
4886 |
var cur = line.parent, no = indexOf(cur.lines, line); |
4887 |
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { |
4888 |
for (var i = 0;; ++i) { |
4889 |
if (chunk.children[i] == cur) break; |
4890 |
no += chunk.children[i].chunkSize(); |
4891 |
} |
4892 |
} |
4893 |
return no + cur.first; |
4894 |
} |
4895 |
|
4896 |
function lineAtHeight(chunk, h) { |
4897 |
var n = chunk.first; |
4898 |
outer: do { |
4899 |
for (var i = 0, e = chunk.children.length; i < e; ++i) { |
4900 |
var child = chunk.children[i], ch = child.height; |
4901 |
if (h < ch) { chunk = child; continue outer; } |
4902 |
h -= ch; |
4903 |
n += child.chunkSize(); |
4904 |
} |
4905 |
return n; |
4906 |
} while (!chunk.lines); |
4907 |
for (var i = 0, e = chunk.lines.length; i < e; ++i) { |
4908 |
var line = chunk.lines[i], lh = line.height; |
4909 |
if (h < lh) break; |
4910 |
h -= lh; |
4911 |
} |
4912 |
return n + i; |
4913 |
} |
4914 |
|
4915 |
function heightAtLine(cm, lineObj) { |
4916 |
lineObj = visualLine(cm.doc, lineObj); |
4917 |
|
4918 |
var h = 0, chunk = lineObj.parent; |
4919 |
for (var i = 0; i < chunk.lines.length; ++i) { |
4920 |
var line = chunk.lines[i]; |
4921 |
if (line == lineObj) break; |
4922 |
else h += line.height; |
4923 |
} |
4924 |
for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { |
4925 |
for (var i = 0; i < p.children.length; ++i) { |
4926 |
var cur = p.children[i]; |
4927 |
if (cur == chunk) break; |
4928 |
else h += cur.height; |
4929 |
} |
4930 |
} |
4931 |
return h; |
4932 |
} |
4933 |
|
4934 |
function getOrder(line) { |
4935 |
var order = line.order; |
4936 |
if (order == null) order = line.order = bidiOrdering(line.text); |
4937 |
return order; |
4938 |
} |
4939 |
|
4940 |
// HISTORY |
4941 |
|
4942 |
function makeHistory(startGen) { |
4943 |
return { |
4944 |
// Arrays of history events. Doing something adds an event to |
4945 |
// done and clears undo. Undoing moves events from done to |
4946 |
// undone, redoing moves them in the other direction. |
4947 |
done: [], undone: [], undoDepth: Infinity, |
4948 |
// Used to track when changes can be merged into a single undo |
4949 |
// event |
4950 |
lastTime: 0, lastOp: null, lastOrigin: null, |
4951 |
// Used by the isClean() method |
4952 |
generation: startGen || 1, maxGeneration: startGen || 1 |
4953 |
}; |
4954 |
} |
4955 |
|
4956 |
function attachLocalSpans(doc, change, from, to) { |
4957 |
var existing = change["spans_" + doc.id], n = 0; |
4958 |
doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { |
4959 |
if (line.markedSpans) |
4960 |
(existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; |
4961 |
++n; |
4962 |
}); |
4963 |
} |
4964 |
|
4965 |
function historyChangeFromChange(doc, change) { |
4966 |
var histChange = {from: change.from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; |
4967 |
attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); |
4968 |
linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); |
4969 |
return histChange; |
4970 |
} |
4971 |
|
4972 |
function addToHistory(doc, change, selAfter, opId) { |
4973 |
var hist = doc.history; |
4974 |
hist.undone.length = 0; |
4975 |
var time = +new Date, cur = lst(hist.done); |
4976 |
|
4977 |
if (cur && |
4978 |
(hist.lastOp == opId || |
4979 |
hist.lastOrigin == change.origin && change.origin && |
4980 |
((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || |
4981 |
change.origin.charAt(0) == "*"))) { |
4982 |
// Merge this change into the last event |
4983 |
var last = lst(cur.changes); |
4984 |
if (posEq(change.from, change.to) && posEq(change.from, last.to)) { |
4985 |
// Optimized case for simple insertion -- don't want to add |
4986 |
// new changesets for every character typed |
4987 |
last.to = changeEnd(change); |
4988 |
} else { |
4989 |
// Add new sub-event |
4990 |
cur.changes.push(historyChangeFromChange(doc, change)); |
4991 |
} |
4992 |
cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; |
4993 |
} else { |
4994 |
// Can not be merged, start a new event. |
4995 |
cur = {changes: [historyChangeFromChange(doc, change)], |
4996 |
generation: hist.generation, |
4997 |
anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, |
4998 |
anchorAfter: selAfter.anchor, headAfter: selAfter.head}; |
4999 |
hist.done.push(cur); |
5000 |
hist.generation = ++hist.maxGeneration; |
5001 |
while (hist.done.length > hist.undoDepth) |
5002 |
hist.done.shift(); |
5003 |
} |
5004 |
hist.lastTime = time; |
5005 |
hist.lastOp = opId; |
5006 |
hist.lastOrigin = change.origin; |
5007 |
} |
5008 |
|
5009 |
function removeClearedSpans(spans) { |
5010 |
if (!spans) return null; |
5011 |
for (var i = 0, out; i < spans.length; ++i) { |
5012 |
if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } |
5013 |
else if (out) out.push(spans[i]); |
5014 |
} |
5015 |
return !out ? spans : out.length ? out : null; |
5016 |
} |
5017 |
|
5018 |
function getOldSpans(doc, change) { |
5019 |
var found = change["spans_" + doc.id]; |
5020 |
if (!found) return null; |
5021 |
for (var i = 0, nw = []; i < change.text.length; ++i) |
5022 |
nw.push(removeClearedSpans(found[i])); |
5023 |
return nw; |
5024 |
} |
5025 |
|
5026 |
// Used both to provide a JSON-safe object in .getHistory, and, when |
5027 |
// detaching a document, to split the history in two |
5028 |
function copyHistoryArray(events, newGroup) { |
5029 |
for (var i = 0, copy = []; i < events.length; ++i) { |
5030 |
var event = events[i], changes = event.changes, newChanges = []; |
5031 |
copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, |
5032 |
anchorAfter: event.anchorAfter, headAfter: event.headAfter}); |
5033 |
for (var j = 0; j < changes.length; ++j) { |
5034 |
var change = changes[j], m; |
5035 |
newChanges.push({from: change.from, to: change.to, text: change.text}); |
5036 |
if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { |
5037 |
if (indexOf(newGroup, Number(m[1])) > -1) { |
5038 |
lst(newChanges)[prop] = change[prop]; |
5039 |
delete change[prop]; |
5040 |
} |
5041 |
} |
5042 |
} |
5043 |
} |
5044 |
return copy; |
5045 |
} |
5046 |
|
5047 |
// Rebasing/resetting history to deal with externally-sourced changes |
5048 |
|
5049 |
function rebaseHistSel(pos, from, to, diff) { |
5050 |
if (to < pos.line) { |
5051 |
pos.line += diff; |
5052 |
} else if (from < pos.line) { |
5053 |
pos.line = from; |
5054 |
pos.ch = 0; |
5055 |
} |
5056 |
} |
5057 |
|
5058 |
// Tries to rebase an array of history events given a change in the |
5059 |
// document. If the change touches the same lines as the event, the |
5060 |
// event, and everything 'behind' it, is discarded. If the change is |
5061 |
// before the event, the event's positions are updated. Uses a |
5062 |
// copy-on-write scheme for the positions, to avoid having to |
5063 |
// reallocate them all on every rebase, but also avoid problems with |
5064 |
// shared position objects being unsafely updated. |
5065 |
function rebaseHistArray(array, from, to, diff) { |
5066 |
for (var i = 0; i < array.length; ++i) { |
5067 |
var sub = array[i], ok = true; |
5068 |
for (var j = 0; j < sub.changes.length; ++j) { |
5069 |
var cur = sub.changes[j]; |
5070 |
if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); } |
5071 |
if (to < cur.from.line) { |
5072 |
cur.from.line += diff; |
5073 |
cur.to.line += diff; |
5074 |
} else if (from <= cur.to.line) { |
5075 |
ok = false; |
5076 |
break; |
5077 |
} |
5078 |
} |
5079 |
if (!sub.copied) { |
5080 |
sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore); |
5081 |
sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter); |
5082 |
sub.copied = true; |
5083 |
} |
5084 |
if (!ok) { |
5085 |
array.splice(0, i + 1); |
5086 |
i = 0; |
5087 |
} else { |
5088 |
rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore); |
5089 |
rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter); |
5090 |
} |
5091 |
} |
5092 |
} |
5093 |
|
5094 |
function rebaseHist(hist, change) { |
5095 |
var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; |
5096 |
rebaseHistArray(hist.done, from, to, diff); |
5097 |
rebaseHistArray(hist.undone, from, to, diff); |
5098 |
} |
5099 |
|
5100 |
// EVENT OPERATORS |
5101 |
|
5102 |
function stopMethod() {e_stop(this);} |
5103 |
// Ensure an event has a stop method. |
5104 |
function addStop(event) { |
5105 |
if (!event.stop) event.stop = stopMethod; |
5106 |
return event; |
5107 |
} |
5108 |
|
5109 |
function e_preventDefault(e) { |
5110 |
if (e.preventDefault) e.preventDefault(); |
5111 |
else e.returnValue = false; |
5112 |
} |
5113 |
function e_stopPropagation(e) { |
5114 |
if (e.stopPropagation) e.stopPropagation(); |
5115 |
else e.cancelBubble = true; |
5116 |
} |
5117 |
function e_defaultPrevented(e) { |
5118 |
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; |
5119 |
} |
5120 |
function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} |
5121 |
CodeMirror.e_stop = e_stop; |
5122 |
CodeMirror.e_preventDefault = e_preventDefault; |
5123 |
CodeMirror.e_stopPropagation = e_stopPropagation; |
5124 |
|
5125 |
function e_target(e) {return e.target || e.srcElement;} |
5126 |
function e_button(e) { |
5127 |
var b = e.which; |
5128 |
if (b == null) { |
5129 |
if (e.button & 1) b = 1; |
5130 |
else if (e.button & 2) b = 3; |
5131 |
else if (e.button & 4) b = 2; |
5132 |
} |
5133 |
if (mac && e.ctrlKey && b == 1) b = 3; |
5134 |
return b; |
5135 |
} |
5136 |
|
5137 |
// EVENT HANDLING |
5138 |
|
5139 |
function on(emitter, type, f) { |
5140 |
if (emitter.addEventListener) |
5141 |
emitter.addEventListener(type, f, false); |
5142 |
else if (emitter.attachEvent) |
5143 |
emitter.attachEvent("on" + type, f); |
5144 |
else { |
5145 |
var map = emitter._handlers || (emitter._handlers = {}); |
5146 |
var arr = map[type] || (map[type] = []); |
5147 |
arr.push(f); |
5148 |
} |
5149 |
} |
5150 |
|
5151 |
function off(emitter, type, f) { |
5152 |
if (emitter.removeEventListener) |
5153 |
emitter.removeEventListener(type, f, false); |
5154 |
else if (emitter.detachEvent) |
5155 |
emitter.detachEvent("on" + type, f); |
5156 |
else { |
5157 |
var arr = emitter._handlers && emitter._handlers[type]; |
5158 |
if (!arr) return; |
5159 |
for (var i = 0; i < arr.length; ++i) |
5160 |
if (arr[i] == f) { arr.splice(i, 1); break; } |
5161 |
} |
5162 |
} |
5163 |
|
5164 |
function signal(emitter, type /*, values...*/) { |
5165 |
var arr = emitter._handlers && emitter._handlers[type]; |
5166 |
if (!arr) return; |
5167 |
var args = Array.prototype.slice.call(arguments, 2); |
5168 |
for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); |
5169 |
} |
5170 |
|
5171 |
var delayedCallbacks, delayedCallbackDepth = 0; |
5172 |
function signalLater(emitter, type /*, values...*/) { |
5173 |
var arr = emitter._handlers && emitter._handlers[type]; |
5174 |
if (!arr) return; |
5175 |
var args = Array.prototype.slice.call(arguments, 2); |
5176 |
if (!delayedCallbacks) { |
5177 |
++delayedCallbackDepth; |
5178 |
delayedCallbacks = []; |
5179 |
setTimeout(fireDelayed, 0); |
5180 |
} |
5181 |
function bnd(f) {return function(){f.apply(null, args);};}; |
5182 |
for (var i = 0; i < arr.length; ++i) |
5183 |
delayedCallbacks.push(bnd(arr[i])); |
5184 |
} |
5185 |
|
5186 |
function signalDOMEvent(cm, e) { |
5187 |
signal(cm, e.type, cm, e); |
5188 |
return e_defaultPrevented(e); |
5189 |
} |
5190 |
|
5191 |
function fireDelayed() { |
5192 |
--delayedCallbackDepth; |
5193 |
var delayed = delayedCallbacks; |
5194 |
delayedCallbacks = null; |
5195 |
for (var i = 0; i < delayed.length; ++i) delayed[i](); |
5196 |
} |
5197 |
|
5198 |
function hasHandler(emitter, type) { |
5199 |
var arr = emitter._handlers && emitter._handlers[type]; |
5200 |
return arr && arr.length > 0; |
5201 |
} |
5202 |
|
5203 |
CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; |
5204 |
|
5205 |
// MISC UTILITIES |
5206 |
|
5207 |
// Number of pixels added to scroller and sizer to hide scrollbar |
5208 |
var scrollerCutOff = 30; |
5209 |
|
5210 |
// Returned or thrown by various protocols to signal 'I'm not |
5211 |
// handling this'. |
5212 |
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; |
5213 |
|
5214 |
function Delayed() {this.id = null;} |
5215 |
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; |
5216 |
|
5217 |
// Counts the column offset in a string, taking tabs into account. |
5218 |
// Used mostly to find indentation. |
5219 |
function countColumn(string, end, tabSize, startIndex, startValue) { |
5220 |
if (end == null) { |
5221 |
end = string.search(/[^\s\u00a0]/); |
5222 |
if (end == -1) end = string.length; |
5223 |
} |
5224 |
for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { |
5225 |
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); |
5226 |
else ++n; |
5227 |
} |
5228 |
return n; |
5229 |
} |
5230 |
CodeMirror.countColumn = countColumn; |
5231 |
|
5232 |
var spaceStrs = [""]; |
5233 |
function spaceStr(n) { |
5234 |
while (spaceStrs.length <= n) |
5235 |
spaceStrs.push(lst(spaceStrs) + " "); |
5236 |
return spaceStrs[n]; |
5237 |
} |
5238 |
|
5239 |
function lst(arr) { return arr[arr.length-1]; } |
5240 |
|
5241 |
function selectInput(node) { |
5242 |
if (ios) { // Mobile Safari apparently has a bug where select() is broken. |
5243 |
node.selectionStart = 0; |
5244 |
node.selectionEnd = node.value.length; |
5245 |
} else { |
5246 |
// Suppress mysterious IE10 errors |
5247 |
try { node.select(); } |
5248 |
catch(_e) {} |
5249 |
} |
5250 |
} |
5251 |
|
5252 |
function indexOf(collection, elt) { |
5253 |
if (collection.indexOf) return collection.indexOf(elt); |
5254 |
for (var i = 0, e = collection.length; i < e; ++i) |
5255 |
if (collection[i] == elt) return i; |
5256 |
return -1; |
5257 |
} |
5258 |
|
5259 |
function createObj(base, props) { |
5260 |
function Obj() {} |
5261 |
Obj.prototype = base; |
5262 |
var inst = new Obj(); |
5263 |
if (props) copyObj(props, inst); |
5264 |
return inst; |
5265 |
} |
5266 |
|
5267 |
function copyObj(obj, target) { |
5268 |
if (!target) target = {}; |
5269 |
for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; |
5270 |
return target; |
5271 |
} |
5272 |
|
5273 |
function emptyArray(size) { |
5274 |
for (var a = [], i = 0; i < size; ++i) a.push(undefined); |
5275 |
return a; |
5276 |
} |
5277 |
|
5278 |
function bind(f) { |
5279 |
var args = Array.prototype.slice.call(arguments, 1); |
5280 |
return function(){return f.apply(null, args);}; |
5281 |
} |
5282 |
|
5283 |
var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; |
5284 |
function isWordChar(ch) { |
5285 |
return /\w/.test(ch) || ch > "\x80" && |
5286 |
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); |
5287 |
} |
5288 |
|
5289 |
function isEmpty(obj) { |
5290 |
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; |
5291 |
return true; |
5292 |
} |
5293 |
|
5294 |
var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/; |
5295 |
|
5296 |
// DOM UTILITIES |
5297 |
|
5298 |
function elt(tag, content, className, style) { |
5299 |
var e = document.createElement(tag); |
5300 |
if (className) e.className = className; |
5301 |
if (style) e.style.cssText = style; |
5302 |
if (typeof content == "string") setTextContent(e, content); |
5303 |
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); |
5304 |
return e; |
5305 |
} |
5306 |
|
5307 |
function removeChildren(e) { |
5308 |
for (var count = e.childNodes.length; count > 0; --count) |
5309 |
e.removeChild(e.firstChild); |
5310 |
return e; |
5311 |
} |
5312 |
|
5313 |
function removeChildrenAndAdd(parent, e) { |
5314 |
return removeChildren(parent).appendChild(e); |
5315 |
} |
5316 |
|
5317 |
function setTextContent(e, str) { |
5318 |
if (ie_lt9) { |
5319 |
e.innerHTML = ""; |
5320 |
e.appendChild(document.createTextNode(str)); |
5321 |
} else e.textContent = str; |
5322 |
} |
5323 |
|
5324 |
function getRect(node) { |
5325 |
return node.getBoundingClientRect(); |
5326 |
} |
5327 |
CodeMirror.replaceGetRect = function(f) { getRect = f; }; |
5328 |
|
5329 |
// FEATURE DETECTION |
5330 |
|
5331 |
// Detect drag-and-drop |
5332 |
var dragAndDrop = function() { |
5333 |
// There is *some* kind of drag-and-drop support in IE6-8, but I |
5334 |
// couldn't get it to work yet. |
5335 |
if (ie_lt9) return false; |
5336 |
var div = elt('div'); |
5337 |
return "draggable" in div || "dragDrop" in div; |
5338 |
}(); |
5339 |
|
5340 |
// For a reason I have yet to figure out, some browsers disallow |
5341 |
// word wrapping between certain characters *only* if a new inline |
5342 |
// element is started between them. This makes it hard to reliably |
5343 |
// measure the position of things, since that requires inserting an |
5344 |
// extra span. This terribly fragile set of tests matches the |
5345 |
// character combinations that suffer from this phenomenon on the |
5346 |
// various browsers. |
5347 |
function spanAffectsWrapping() { return false; } |
5348 |
if (gecko) // Only for "$'" |
5349 |
spanAffectsWrapping = function(str, i) { |
5350 |
return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; |
5351 |
}; |
5352 |
else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) |
5353 |
spanAffectsWrapping = function(str, i) { |
5354 |
return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); |
5355 |
}; |
5356 |
else if (webkit) |
5357 |
spanAffectsWrapping = function(str, i) { |
5358 |
if (i > 1 && str.charCodeAt(i - 1) == 45 && /\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) |
5359 |
return true; |
5360 |
return /[~!#%&*)=+}\]|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); |
5361 |
}; |
5362 |
|
5363 |
var knownScrollbarWidth; |
5364 |
function scrollbarWidth(measure) { |
5365 |
if (knownScrollbarWidth != null) return knownScrollbarWidth; |
5366 |
var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); |
5367 |
removeChildrenAndAdd(measure, test); |
5368 |
if (test.offsetWidth) |
5369 |
knownScrollbarWidth = test.offsetHeight - test.clientHeight; |
5370 |
return knownScrollbarWidth || 0; |
5371 |
} |
5372 |
|
5373 |
var zwspSupported; |
5374 |
function zeroWidthElement(measure) { |
5375 |
if (zwspSupported == null) { |
5376 |
var test = elt("span", "\u200b"); |
5377 |
removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); |
5378 |
if (measure.firstChild.offsetHeight != 0) |
5379 |
zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; |
5380 |
} |
5381 |
if (zwspSupported) return elt("span", "\u200b"); |
5382 |
else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); |
5383 |
} |
5384 |
|
5385 |
// See if "".split is the broken IE version, if so, provide an |
5386 |
// alternative way to split lines. |
5387 |
var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { |
5388 |
var pos = 0, result = [], l = string.length; |
5389 |
while (pos <= l) { |
5390 |
var nl = string.indexOf("\n", pos); |
5391 |
if (nl == -1) nl = string.length; |
5392 |
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); |
5393 |
var rt = line.indexOf("\r"); |
5394 |
if (rt != -1) { |
5395 |
result.push(line.slice(0, rt)); |
5396 |
pos += rt + 1; |
5397 |
} else { |
5398 |
result.push(line); |
5399 |
pos = nl + 1; |
5400 |
} |
5401 |
} |
5402 |
return result; |
5403 |
} : function(string){return string.split(/\r\n?|\n/);}; |
5404 |
CodeMirror.splitLines = splitLines; |
5405 |
|
5406 |
var hasSelection = window.getSelection ? function(te) { |
5407 |
try { return te.selectionStart != te.selectionEnd; } |
5408 |
catch(e) { return false; } |
5409 |
} : function(te) { |
5410 |
try {var range = te.ownerDocument.selection.createRange();} |
5411 |
catch(e) {} |
5412 |
if (!range || range.parentElement() != te) return false; |
5413 |
return range.compareEndPoints("StartToEnd", range) != 0; |
5414 |
}; |
5415 |
|
5416 |
var hasCopyEvent = (function() { |
5417 |
var e = elt("div"); |
5418 |
if ("oncopy" in e) return true; |
5419 |
e.setAttribute("oncopy", "return;"); |
5420 |
return typeof e.oncopy == 'function'; |
5421 |
})(); |
5422 |
|
5423 |
// KEY NAMING |
5424 |
|
5425 |
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", |
5426 |
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", |
5427 |
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", |
5428 |
46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", |
5429 |
186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", |
5430 |
221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", |
5431 |
63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; |
5432 |
CodeMirror.keyNames = keyNames; |
5433 |
(function() { |
5434 |
// Number keys |
5435 |
for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i); |
5436 |
// Alphabetic keys |
5437 |
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); |
5438 |
// Function keys |
5439 |
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; |
5440 |
})(); |
5441 |
|
5442 |
// BIDI HELPERS |
5443 |
|
5444 |
function iterateBidiSections(order, from, to, f) { |
5445 |
if (!order) return f(from, to, "ltr"); |
5446 |
for (var i = 0; i < order.length; ++i) { |
5447 |
var part = order[i]; |
5448 |
if (part.from < to && part.to > from || from == to && part.to == from) |
5449 |
f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); |
5450 |
} |
5451 |
} |
5452 |
|
5453 |
function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } |
5454 |
function bidiRight(part) { return part.level % 2 ? part.from : part.to; } |
5455 |
|
5456 |
function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } |
5457 |
function lineRight(line) { |
5458 |
var order = getOrder(line); |
5459 |
if (!order) return line.text.length; |
5460 |
return bidiRight(lst(order)); |
5461 |
} |
5462 |
|
5463 |
function lineStart(cm, lineN) { |
5464 |
var line = getLine(cm.doc, lineN); |
5465 |
var visual = visualLine(cm.doc, line); |
5466 |
if (visual != line) lineN = lineNo(visual); |
5467 |
var order = getOrder(visual); |
5468 |
var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); |
5469 |
return Pos(lineN, ch); |
5470 |
} |
5471 |
function lineEnd(cm, lineN) { |
5472 |
var merged, line; |
5473 |
while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) |
5474 |
lineN = merged.find().to.line; |
5475 |
var order = getOrder(line); |
5476 |
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); |
5477 |
return Pos(lineN, ch); |
5478 |
} |
5479 |
|
5480 |
function compareBidiLevel(order, a, b) { |
5481 |
var linedir = order[0].level; |
5482 |
if (a == linedir) return true; |
5483 |
if (b == linedir) return false; |
5484 |
return a < b; |
5485 |
} |
5486 |
var bidiOther; |
5487 |
function getBidiPartAt(order, pos) { |
5488 |
for (var i = 0, found; i < order.length; ++i) { |
5489 |
var cur = order[i]; |
5490 |
if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; } |
5491 |
if (cur.from == pos || cur.to == pos) { |
5492 |
if (found == null) { |
5493 |
found = i; |
5494 |
} else if (compareBidiLevel(order, cur.level, order[found].level)) { |
5495 |
bidiOther = found; |
5496 |
return i; |
5497 |
} else { |
5498 |
bidiOther = i; |
5499 |
return found; |
5500 |
} |
5501 |
} |
5502 |
} |
5503 |
bidiOther = null; |
5504 |
return found; |
5505 |
} |
5506 |
|
5507 |
function moveInLine(line, pos, dir, byUnit) { |
5508 |
if (!byUnit) return pos + dir; |
5509 |
do pos += dir; |
5510 |
while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); |
5511 |
return pos; |
5512 |
} |
5513 |
|
5514 |
// This is somewhat involved. It is needed in order to move |
5515 |
// 'visually' through bi-directional text -- i.e., pressing left |
5516 |
// should make the cursor go left, even when in RTL text. The |
5517 |
// tricky part is the 'jumps', where RTL and LTR text touch each |
5518 |
// other. This often requires the cursor offset to move more than |
5519 |
// one unit, in order to visually move one unit. |
5520 |
function moveVisually(line, start, dir, byUnit) { |
5521 |
var bidi = getOrder(line); |
5522 |
if (!bidi) return moveLogically(line, start, dir, byUnit); |
5523 |
var pos = getBidiPartAt(bidi, start), part = bidi[pos]; |
5524 |
var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); |
5525 |
|
5526 |
for (;;) { |
5527 |
if (target > part.from && target < part.to) return target; |
5528 |
if (target == part.from || target == part.to) { |
5529 |
if (getBidiPartAt(bidi, target) == pos) return target; |
5530 |
part = bidi[pos += dir]; |
5531 |
return (dir > 0) == part.level % 2 ? part.to : part.from; |
5532 |
} else { |
5533 |
part = bidi[pos += dir]; |
5534 |
if (!part) return null; |
5535 |
if ((dir > 0) == part.level % 2) |
5536 |
target = moveInLine(line, part.to, -1, byUnit); |
5537 |
else |
5538 |
target = moveInLine(line, part.from, 1, byUnit); |
5539 |
} |
5540 |
} |
5541 |
} |
5542 |
|
5543 |
function moveLogically(line, start, dir, byUnit) { |
5544 |
var target = start + dir; |
5545 |
if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir; |
5546 |
return target < 0 || target > line.text.length ? null : target; |
5547 |
} |
5548 |
|
5549 |
// Bidirectional ordering algorithm |
5550 |
// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm |
5551 |
// that this (partially) implements. |
5552 |
|
5553 |
// One-char codes used for character types: |
5554 |
// L (L): Left-to-Right |
5555 |
// R (R): Right-to-Left |
5556 |
// r (AL): Right-to-Left Arabic |
5557 |
// 1 (EN): European Number |
5558 |
// + (ES): European Number Separator |
5559 |
// % (ET): European Number Terminator |
5560 |
// n (AN): Arabic Number |
5561 |
// , (CS): Common Number Separator |
5562 |
// m (NSM): Non-Spacing Mark |
5563 |
// b (BN): Boundary Neutral |
5564 |
// s (B): Paragraph Separator |
5565 |
// t (S): Segment Separator |
5566 |
// w (WS): Whitespace |
5567 |
// N (ON): Other Neutrals |
5568 |
|
5569 |
// Returns null if characters are ordered as they appear |
5570 |
// (left-to-right), or an array of sections ({from, to, level} |
5571 |
// objects) in the order in which they occur visually. |
5572 |
var bidiOrdering = (function() { |
5573 |
// Character types for codepoints 0 to 0xff |
5574 |
var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; |
5575 |
// Character types for codepoints 0x600 to 0x6ff |
5576 |
var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; |
5577 |
function charType(code) { |
5578 |
if (code <= 0xff) return lowTypes.charAt(code); |
5579 |
else if (0x590 <= code && code <= 0x5f4) return "R"; |
5580 |
else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); |
5581 |
else if (0x700 <= code && code <= 0x8ac) return "r"; |
5582 |
else return "L"; |
5583 |
} |
5584 |
|
5585 |
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; |
5586 |
var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; |
5587 |
// Browsers seem to always treat the boundaries of block elements as being L. |
5588 |
var outerType = "L"; |
5589 |
|
5590 |
return function(str) { |
5591 |
if (!bidiRE.test(str)) return false; |
5592 |
var len = str.length, types = []; |
5593 |
for (var i = 0, type; i < len; ++i) |
5594 |
types.push(type = charType(str.charCodeAt(i))); |
5595 |
|
5596 |
// W1. Examine each non-spacing mark (NSM) in the level run, and |
5597 |
// change the type of the NSM to the type of the previous |
5598 |
// character. If the NSM is at the start of the level run, it will |
5599 |
// get the type of sor. |
5600 |
for (var i = 0, prev = outerType; i < len; ++i) { |
5601 |
var type = types[i]; |
5602 |
if (type == "m") types[i] = prev; |
5603 |
else prev = type; |
5604 |
} |
5605 |
|
5606 |
// W2. Search backwards from each instance of a European number |
5607 |
// until the first strong type (R, L, AL, or sor) is found. If an |
5608 |
// AL is found, change the type of the European number to Arabic |
5609 |
// number. |
5610 |
// W3. Change all ALs to R. |
5611 |
for (var i = 0, cur = outerType; i < len; ++i) { |
5612 |
var type = types[i]; |
5613 |
if (type == "1" && cur == "r") types[i] = "n"; |
5614 |
else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } |
5615 |
} |
5616 |
|
5617 |
// W4. A single European separator between two European numbers |
5618 |
// changes to a European number. A single common separator between |
5619 |
// two numbers of the same type changes to that type. |
5620 |
for (var i = 1, prev = types[0]; i < len - 1; ++i) { |
5621 |
var type = types[i]; |
5622 |
if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; |
5623 |
else if (type == "," && prev == types[i+1] && |
5624 |
(prev == "1" || prev == "n")) types[i] = prev; |
5625 |
prev = type; |
5626 |
} |
5627 |
|
5628 |
// W5. A sequence of European terminators adjacent to European |
5629 |
// numbers changes to all European numbers. |
5630 |
// W6. Otherwise, separators and terminators change to Other |
5631 |
// Neutral. |
5632 |
for (var i = 0; i < len; ++i) { |
5633 |
var type = types[i]; |
5634 |
if (type == ",") types[i] = "N"; |
5635 |
else if (type == "%") { |
5636 |
for (var end = i + 1; end < len && types[end] == "%"; ++end) {} |
5637 |
var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N"; |
5638 |
for (var j = i; j < end; ++j) types[j] = replace; |
5639 |
i = end - 1; |
5640 |
} |
5641 |
} |
5642 |
|
5643 |
// W7. Search backwards from each instance of a European number |
5644 |
// until the first strong type (R, L, or sor) is found. If an L is |
5645 |
// found, then change the type of the European number to L. |
5646 |
for (var i = 0, cur = outerType; i < len; ++i) { |
5647 |
var type = types[i]; |
5648 |
if (cur == "L" && type == "1") types[i] = "L"; |
5649 |
else if (isStrong.test(type)) cur = type; |
5650 |
} |
5651 |
|
5652 |
// N1. A sequence of neutrals takes the direction of the |
5653 |
// surrounding strong text if the text on both sides has the same |
5654 |
// direction. European and Arabic numbers act as if they were R in |
5655 |
// terms of their influence on neutrals. Start-of-level-run (sor) |
5656 |
// and end-of-level-run (eor) are used at level run boundaries. |
5657 |
// N2. Any remaining neutrals take the embedding direction. |
5658 |
for (var i = 0; i < len; ++i) { |
5659 |
if (isNeutral.test(types[i])) { |
5660 |
for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} |
5661 |
var before = (i ? types[i-1] : outerType) == "L"; |
5662 |
var after = (end < len - 1 ? types[end] : outerType) == "L"; |
5663 |
var replace = before || after ? "L" : "R"; |
5664 |
for (var j = i; j < end; ++j) types[j] = replace; |
5665 |
i = end - 1; |
5666 |
} |
5667 |
} |
5668 |
|
5669 |
// Here we depart from the documented algorithm, in order to avoid |
5670 |
// building up an actual levels array. Since there are only three |
5671 |
// levels (0, 1, 2) in an implementation that doesn't take |
5672 |
// explicit embedding into account, we can build up the order on |
5673 |
// the fly, without following the level-based algorithm. |
5674 |
var order = [], m; |
5675 |
for (var i = 0; i < len;) { |
5676 |
if (countsAsLeft.test(types[i])) { |
5677 |
var start = i; |
5678 |
for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} |
5679 |
order.push({from: start, to: i, level: 0}); |
5680 |
} else { |
5681 |
var pos = i, at = order.length; |
5682 |
for (++i; i < len && types[i] != "L"; ++i) {} |
5683 |
for (var j = pos; j < i;) { |
5684 |
if (countsAsNum.test(types[j])) { |
5685 |
if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); |
5686 |
var nstart = j; |
5687 |
for (++j; j < i && countsAsNum.test(types[j]); ++j) {} |
5688 |
order.splice(at, 0, {from: nstart, to: j, level: 2}); |
5689 |
pos = j; |
5690 |
} else ++j; |
5691 |
} |
5692 |
if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); |
5693 |
} |
5694 |
} |
5695 |
if (order[0].level == 1 && (m = str.match(/^\s+/))) { |
5696 |
order[0].from = m[0].length; |
5697 |
order.unshift({from: 0, to: m[0].length, level: 0}); |
5698 |
} |
5699 |
if (lst(order).level == 1 && (m = str.match(/\s+$/))) { |
5700 |
lst(order).to -= m[0].length; |
5701 |
order.push({from: len - m[0].length, to: len, level: 0}); |
5702 |
} |
5703 |
if (order[0].level != lst(order).level) |
5704 |
order.push({from: len, to: len, level: order[0].level}); |
5705 |
|
5706 |
return order; |
5707 |
}; |
5708 |
})(); |
5709 |
|
5710 |
// THE END |
5711 |
|
5712 |
CodeMirror.version = "3.14.0"; |
5713 |
|
5714 |
return CodeMirror; |
5715 |
})(); |