1
// All functions that need access to the editor's state live inside
2
// the CodeMirror function. Below that, at the bottom of the file,
3
// some utilities are defined.
5
// CodeMirror is the only global var we claim
6
var CodeMirror = (function() {
7
// This is the function that produces an editor instance. It's
8
// closure is used to store the editor state.
9
function CodeMirror(place, givenOptions) {
10
// Determine effective options based on given values and defaults.
11
var options = {}, defaults = CodeMirror.defaults;
12
for (var opt in defaults)
13
if (defaults.hasOwnProperty(opt))
14
options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
16
var targetDocument = options["document"];
17
// The element in which the editor lives.
18
var wrapper = targetDocument.createElement("div");
19
wrapper.className = "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : "");
20
// This mess creates the base DOM structure for the editor.
22
'<div style="overflow: hidden; position: relative; width: 3px; height: 0px;">' + // Wraps and hides input textarea
23
'<textarea style="position: absolute; padding: 0; width: 1px; height: 1em" wrap="off" ' +
24
'autocorrect="off" autocapitalize="off"></textarea></div>' +
25
'<div class="CodeMirror-scroll" tabindex="-1">' +
26
'<div style="position: relative">' + // Set to the height of the text, causes scrolling
27
'<div style="position: relative">' + // Moved around its parent to cover visible view
28
'<div class="CodeMirror-gutter"><div class="CodeMirror-gutter-text"></div></div>' +
29
// Provides positioning relative to (visible) text origin
30
'<div class="CodeMirror-lines"><div style="position: relative; z-index: 0">' +
31
'<div style="position: absolute; width: 100%; height: 0; overflow: hidden; visibility: hidden; outline: 5px auto none"></div>' +
32
'<pre class="CodeMirror-cursor"> </pre>' + // Absolutely positioned blinky cursor
33
'<div style="position: relative; z-index: -1"></div><div></div>' + // DIVs containing the selection and the actual code
34
'</div></div></div></div></div>';
35
if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
36
// I've never seen more elegant code in my life.
37
var inputDiv = wrapper.firstChild, input = inputDiv.firstChild,
38
scroller = wrapper.lastChild, code = scroller.firstChild,
39
mover = code.firstChild, gutter = mover.firstChild, gutterText = gutter.firstChild,
40
lineSpace = gutter.nextSibling.firstChild, measure = lineSpace.firstChild,
41
cursor = measure.nextSibling, selectionDiv = cursor.nextSibling,
42
lineDiv = selectionDiv.nextSibling;
44
// Needed to hide big blue blinking cursor on Mobile Safari
45
if (ios) input.style.width = "0px";
46
if (!webkit) lineSpace.draggable = true;
47
lineSpace.style.outline = "none";
48
if (options.tabindex != null) input.tabIndex = options.tabindex;
49
if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
51
// Check for problem with IE innerHTML not working when we have a
52
// P (or similar) parent node.
53
try { stringWidth("x"); }
55
if (e.message.match(/runtime/i))
56
e = new Error("A CodeMirror inside a P-style element does not work in Internet Explorer. (innerHTML bug)");
60
// Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
61
var poll = new Delayed(), highlight = new Delayed(), blinker;
63
// mode holds a mode API object. doc is the tree of Line objects,
64
// work an array of lines that should be parsed, and history the
65
// undo history (instance of History constructor).
66
var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), work, focused;
68
// The selection. These are always maintained to point at valid
69
// positions. Inverted is used to remember that the user is
70
// selecting bottom-to-top.
71
var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
72
// Selection-related flags. shiftSelecting obviously tracks
73
// whether the user is holding shift.
74
var shiftSelecting, lastClick, lastDoubleClick, lastScrollPos = 0, draggingText,
75
overwrite = false, suppressEdits = false;
76
// Variables used by startOperation/endOperation to track what
77
// happened during the operation.
78
var updateInput, userSelChange, changes, textChanged, selectionChanged, leaveInputAlone,
79
gutterDirty, callbacks;
80
// Current visible range (may be bigger than the view window).
81
var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0;
82
// bracketHighlighted is used to remember that a backet has been
84
var bracketHighlighted;
85
// Tracks the maximum line length so that the horizontal scrollbar
86
// can be kept static when scrolling.
87
var maxLine = "", maxWidth, tabText = computeTabText();
89
// Initialize the content.
90
operation(function(){setValue(options.value || ""); updateInput = false;})();
91
var history = new History();
93
// Register our event handlers.
94
connect(scroller, "mousedown", operation(onMouseDown));
95
connect(scroller, "dblclick", operation(onDoubleClick));
96
connect(lineSpace, "dragstart", onDragStart);
97
connect(lineSpace, "selectstart", e_preventDefault);
98
// Gecko browsers fire contextmenu *after* opening the menu, at
99
// which point we can't mess with it anymore. Context menu is
100
// handled in onMouseDown for Gecko.
101
if (!gecko) connect(scroller, "contextmenu", onContextMenu);
102
connect(scroller, "scroll", function() {
103
lastScrollPos = scroller.scrollTop;
105
if (options.fixedGutter) gutter.style.left = scroller.scrollLeft + "px";
106
if (options.onScroll) options.onScroll(instance);
108
connect(window, "resize", function() {updateDisplay(true);});
109
connect(input, "keyup", operation(onKeyUp));
110
connect(input, "input", fastPoll);
111
connect(input, "keydown", operation(onKeyDown));
112
connect(input, "keypress", operation(onKeyPress));
113
connect(input, "focus", onFocus);
114
connect(input, "blur", onBlur);
116
connect(scroller, "dragenter", e_stop);
117
connect(scroller, "dragover", e_stop);
118
connect(scroller, "drop", operation(onDrop));
119
connect(scroller, "paste", function(){focusInput(); fastPoll();});
120
connect(input, "paste", fastPoll);
121
connect(input, "cut", operation(function(){
122
if (!options.readOnly) replaceSelection("");
125
// IE throws unspecified error in certain cases, when
126
// trying to access activeElement before onload
127
var hasFocus; try { hasFocus = (targetDocument.activeElement == input); } catch(e) { }
128
if (hasFocus) setTimeout(onFocus, 20);
131
function isLine(l) {return l >= 0 && l < doc.size;}
132
// The instance object that we'll return. Mostly calls out to
133
// local functions in the CodeMirror function. Some do some extra
134
// range checking and/or clipping. operation is used to wrap the
135
// call so that changes it makes are tracked, and the display is
136
// updated afterwards.
137
var instance = wrapper.CodeMirror = {
139
setValue: operation(setValue),
140
getSelection: getSelection,
141
replaceSelection: operation(replaceSelection),
142
focus: function(){focusInput(); onFocus(); fastPoll();},
143
setOption: function(option, value) {
144
var oldVal = options[option];
145
options[option] = value;
146
if (option == "mode" || option == "indentUnit") loadMode();
147
else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();}
148
else if (option == "readOnly" && !value) {resetInput(true);}
149
else if (option == "theme") themeChanged();
150
else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)();
151
else if (option == "tabSize") operation(tabsChanged)();
152
if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" || option == "theme") {
157
getOption: function(option) {return options[option];},
158
undo: operation(undo),
159
redo: operation(redo),
160
indentLine: operation(function(n, dir) {
161
if (typeof dir != "string") {
162
if (dir == null) dir = options.smartIndent ? "smart" : "prev";
163
else dir = dir ? "add" : "subtract";
165
if (isLine(n)) indentLine(n, dir);
167
indentSelection: operation(indentSelected),
168
historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
169
clearHistory: function() {history = new History();},
170
matchBrackets: operation(function(){matchBrackets(true);}),
171
getTokenAt: operation(function(pos) {
173
return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), pos.ch);
175
getStateAfter: function(line) {
176
line = clipLine(line == null ? doc.size - 1: line);
177
return getStateBefore(line + 1);
179
cursorCoords: function(start){
180
if (start == null) start = sel.inverted;
181
return pageCoords(start ? sel.from : sel.to);
183
charCoords: function(pos){return pageCoords(clipPos(pos));},
184
coordsChar: function(coords) {
185
var off = eltOffset(lineSpace);
186
return coordsChar(coords.x - off.left, coords.y - off.top);
188
markText: operation(markText),
189
setBookmark: setBookmark,
190
setMarker: operation(addGutterMarker),
191
clearMarker: operation(removeGutterMarker),
192
setLineClass: operation(setLineClass),
193
hideLine: operation(function(h) {return setLineHidden(h, true);}),
194
showLine: operation(function(h) {return setLineHidden(h, false);}),
195
onDeleteLine: function(line, f) {
196
if (typeof line == "number") {
197
if (!isLine(line)) return null;
198
line = getLine(line);
200
(line.handlers || (line.handlers = [])).push(f);
204
addWidget: function(pos, node, scroll, vert, horiz) {
205
pos = localCoords(clipPos(pos));
206
var top = pos.yBot, left = pos.x;
207
node.style.position = "absolute";
208
code.appendChild(node);
209
if (vert == "over") top = pos.y;
210
else if (vert == "near") {
211
var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
212
hspace = Math.max(code.clientWidth, lineSpace.clientWidth) - paddingLeft();
213
if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight)
214
top = pos.y - node.offsetHeight;
215
if (left + node.offsetWidth > hspace)
216
left = hspace - node.offsetWidth;
218
node.style.top = (top + paddingTop()) + "px";
219
node.style.left = node.style.right = "";
220
if (horiz == "right") {
221
left = code.clientWidth - node.offsetWidth;
222
node.style.right = "0px";
224
if (horiz == "left") left = 0;
225
else if (horiz == "middle") left = (code.clientWidth - node.offsetWidth) / 2;
226
node.style.left = (left + paddingLeft()) + "px";
229
scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight);
232
lineCount: function() {return doc.size;},
234
getCursor: function(start) {
235
if (start == null) start = sel.inverted;
236
return copyPos(start ? sel.from : sel.to);
238
somethingSelected: function() {return !posEq(sel.from, sel.to);},
239
setCursor: operation(function(line, ch, user) {
240
if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user);
241
else setCursor(line, ch, user);
243
setSelection: operation(function(from, to, user) {
244
(user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from));
246
getLine: function(line) {if (isLine(line)) return getLine(line).text;},
247
getLineHandle: function(line) {if (isLine(line)) return getLine(line);},
248
setLine: operation(function(line, text) {
249
if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
251
removeLine: operation(function(line) {
252
if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
254
replaceRange: operation(replaceRange),
255
getRange: function(from, to) {return getRange(clipPos(from), clipPos(to));},
257
execCommand: function(cmd) {return commands[cmd](instance);},
258
// Stuff used by commands, probably not much use to outside code.
259
moveH: operation(moveH),
260
deleteH: operation(deleteH),
261
moveV: operation(moveV),
262
toggleOverwrite: function() {overwrite = !overwrite;},
264
posFromIndex: function(off) {
266
doc.iter(0, doc.size, function(line) {
267
var sz = line.text.length + 1;
268
if (sz > off) { ch = off; return true; }
272
return clipPos({line: lineNo, ch: ch});
274
indexFromPos: function (coords) {
275
if (coords.line < 0 || coords.ch < 0) return 0;
276
var index = coords.ch;
277
doc.iter(0, coords.line, function (line) {
278
index += line.text.length + 1;
282
scrollTo: function(x, y) {
283
if (x != null) scroller.scrollLeft = x;
284
if (y != null) scroller.scrollTop = y;
288
operation: function(f){return operation(f)();},
291
if (scroller.scrollHeight > lastScrollPos)
292
scroller.scrollTop = lastScrollPos;
294
getInputField: function(){return input;},
295
getWrapperElement: function(){return wrapper;},
296
getScrollerElement: function(){return scroller;},
297
getGutterElement: function(){return gutter;}
300
function getLine(n) { return getLineAt(doc, n); }
301
function updateLineHeight(line, height) {
303
var diff = height - line.height;
304
for (var n = line; n; n = n.parent) n.height += diff;
307
function setValue(code) {
308
var top = {line: 0, ch: 0};
309
updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length},
310
splitLines(code), top, top);
313
function getValue(code) {
315
doc.iter(0, doc.size, function(line) { text.push(line.text); });
316
return text.join("\n");
319
function onMouseDown(e) {
320
setShift(e_prop(e, "shiftKey"));
321
// Check whether this is a click in a widget
322
for (var n = e_target(e); n != wrapper; n = n.parentNode)
323
if (n.parentNode == code && n != mover) return;
325
// See if this is a click in the gutter
326
for (var n = e_target(e); n != wrapper; n = n.parentNode)
327
if (n.parentNode == gutterText) {
328
if (options.onGutterClick)
329
options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e);
330
return e_preventDefault(e);
333
var start = posFromMouse(e);
335
switch (e_button(e)) {
337
if (gecko && !mac) onContextMenu(e);
340
if (start) setCursor(start.line, start.ch, true);
343
// For button 1, if it was clicked inside the editor
344
// (posFromMouse returning non-null), we have to adjust the
346
if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
348
if (!focused) onFocus();
351
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
353
setTimeout(focusInput, 20);
354
return selectLine(start.line);
355
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
356
lastDoubleClick = {time: now, pos: start};
358
return selectWordAt(start);
359
} else { lastClick = {time: now, pos: start}; }
361
var last = start, going;
362
if (dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
363
!posLess(start, sel.from) && !posLess(sel.to, start)) {
364
// Let the drag handler handle this.
365
if (webkit) lineSpace.draggable = true;
366
var up = connect(targetDocument, "mouseup", operation(function(e2) {
367
if (webkit) lineSpace.draggable = false;
368
draggingText = false;
370
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
371
e_preventDefault(e2);
372
setCursor(start.line, start.ch, true);
380
setCursor(start.line, start.ch, true);
383
var cur = posFromMouse(e, true);
384
if (cur && !posEq(cur, last)) {
385
if (!focused) onFocus();
387
setSelectionUser(start, cur);
389
var visible = visibleLines();
390
if (cur.line >= visible.to || cur.line < visible.from)
391
going = setTimeout(operation(function(){extend(e);}), 150);
395
var move = connect(targetDocument, "mousemove", operation(function(e) {
400
var up = connect(targetDocument, "mouseup", operation(function(e) {
402
var cur = posFromMouse(e);
403
if (cur) setSelectionUser(start, cur);
410
function onDoubleClick(e) {
411
for (var n = e_target(e); n != wrapper; n = n.parentNode)
412
if (n.parentNode == gutterText) return e_preventDefault(e);
413
var start = posFromMouse(e);
415
lastDoubleClick = {time: +new Date, pos: start};
421
var pos = posFromMouse(e, true), files = e.dataTransfer.files;
422
if (!pos || options.readOnly) return;
423
if (files && files.length && window.FileReader && window.File) {
424
function loadFile(file, i) {
425
var reader = new FileReader;
426
reader.onload = function() {
427
text[i] = reader.result;
430
operation(function() {
431
var end = replaceRange(text.join(""), pos, pos);
432
setSelectionUser(pos, end);
436
reader.readAsText(file);
438
var n = files.length, text = Array(n), read = 0;
439
for (var i = 0; i < n; ++i) loadFile(files[i], i);
443
var text = e.dataTransfer.getData("Text");
445
var curFrom = sel.from, curTo = sel.to;
446
setSelectionUser(pos, pos);
447
if (draggingText) replaceRange("", curFrom, curTo);
448
replaceSelection(text);
455
function onDragStart(e) {
456
var txt = getSelection();
457
// This will reset escapeElement
459
e.dataTransfer.setDragImage(escapeElement, 0, 0);
460
e.dataTransfer.setData("Text", txt);
462
function handleKeyBinding(e) {
463
var name = keyNames[e_prop(e, "keyCode")], next = keyMap[options.keyMap].auto, bound, dropShift;
464
function handleNext() {
465
return next.call ? next.call(null, instance) : next;
467
if (name == null || e.altGraphKey) {
468
if (next) options.keyMap = handleNext();
471
if (e_prop(e, "altKey")) name = "Alt-" + name;
472
if (e_prop(e, "ctrlKey")) name = "Ctrl-" + name;
473
if (e_prop(e, "metaKey")) name = "Cmd-" + name;
474
if (e_prop(e, "shiftKey") &&
475
(bound = lookupKey("Shift-" + name, options.extraKeys, options.keyMap))) {
478
bound = lookupKey(name, options.extraKeys, options.keyMap);
480
if (typeof bound == "string") {
481
if (commands.propertyIsEnumerable(bound)) bound = commands[bound];
484
if (next && (bound || !isModifierKey(e))) options.keyMap = handleNext();
485
if (!bound) return false;
486
var prevShift = shiftSelecting;
488
if (options.readOnly) suppressEdits = true;
489
if (dropShift) shiftSelecting = null;
492
shiftSelecting = prevShift;
493
suppressEdits = false;
498
var lastStoppedKey = null;
499
function onKeyDown(e) {
500
if (!focused) onFocus();
501
if (ie && e.keyCode == 27) { e.returnValue = false; }
502
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
503
var code = e_prop(e, "keyCode");
504
// IE does strange things with escape.
505
setShift(code == 16 || e_prop(e, "shiftKey"));
506
// First give onKeyEvent option a chance to handle this.
507
var handled = handleKeyBinding(e);
509
lastStoppedKey = handled ? code : null;
510
// Opera has no cut event... we try to at least catch the key combo
511
if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
512
replaceSelection("");
515
function onKeyPress(e) {
516
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
517
var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
518
if (window.opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
519
if (window.opera && !e.which && handleKeyBinding(e)) return;
520
if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) {
521
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
522
if (mode.electricChars.indexOf(ch) > -1)
523
setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75);
527
function onKeyUp(e) {
528
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
529
if (e_prop(e, "keyCode") == 16) shiftSelecting = null;
533
if (options.readOnly == "nocursor") return;
535
if (options.onFocus) options.onFocus(instance);
537
if (wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
538
wrapper.className += " CodeMirror-focused";
539
if (!leaveInputAlone) resetInput(true);
546
if (options.onBlur) options.onBlur(instance);
548
if (bracketHighlighted)
549
operation(function(){
550
if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
552
wrapper.className = wrapper.className.replace(" CodeMirror-focused", "");
554
clearInterval(blinker);
555
setTimeout(function() {if (!focused) shiftSelecting = null;}, 150);
558
// Replace the range from from to to by the strings in newText.
559
// Afterwards, set the selection to selFrom, selTo.
560
function updateLines(from, to, newText, selFrom, selTo) {
561
if (suppressEdits) return;
564
doc.iter(from.line, to.line + 1, function(line) { old.push(line.text); });
565
history.addChange(from.line, newText.length, old);
566
while (history.done.length > options.undoDepth) history.done.shift();
568
updateLinesNoUndo(from, to, newText, selFrom, selTo);
570
function unredoHelper(from, to, dir) {
571
var set = from.pop(), len = set ? set.length : 0, out = [];
572
for (var i = dir > 0 ? 0 : len - 1, e = dir > 0 ? len : -1; i != e; i += dir) {
574
var replaced = [], end = change.start + change.added;
575
doc.iter(change.start, end, function(line) { replaced.push(line.text); });
576
out.push({start: change.start, added: change.old.length, old: replaced});
577
var pos = clipPos({line: change.start + change.old.length - 1,
578
ch: editEnd(replaced[replaced.length-1], change.old[change.old.length-1])});
579
updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length}, change.old, pos, pos);
584
function undo() {unredoHelper(history.done, history.undone, -1);}
585
function redo() {unredoHelper(history.undone, history.done, 1);}
587
function updateLinesNoUndo(from, to, newText, selFrom, selTo) {
588
if (suppressEdits) return;
589
var recomputeMaxLength = false, maxLineLength = maxLine.length;
590
if (!options.lineWrapping)
591
doc.iter(from.line, to.line, function(line) {
592
if (line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
594
if (from.line != to.line || newText.length > 1) gutterDirty = true;
596
var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
597
// First adjust the line structure, taking some care to leave highlighting intact.
598
if (from.ch == 0 && to.ch == 0 && newText[newText.length - 1] == "") {
599
// This is a whole-line replace. Treated specially to make
600
// sure line objects move the way they are supposed to.
601
var added = [], prevLine = null;
603
prevLine = getLine(from.line - 1);
604
prevLine.fixMarkEnds(lastLine);
605
} else lastLine.fixMarkStarts();
606
for (var i = 0, e = newText.length - 1; i < e; ++i)
607
added.push(Line.inheritMarks(newText[i], prevLine));
608
if (nlines) doc.remove(from.line, nlines, callbacks);
609
if (added.length) doc.insert(from.line, added);
610
} else if (firstLine == lastLine) {
611
if (newText.length == 1)
612
firstLine.replace(from.ch, to.ch, newText[0]);
614
lastLine = firstLine.split(to.ch, newText[newText.length-1]);
615
firstLine.replace(from.ch, null, newText[0]);
616
firstLine.fixMarkEnds(lastLine);
618
for (var i = 1, e = newText.length - 1; i < e; ++i)
619
added.push(Line.inheritMarks(newText[i], firstLine));
620
added.push(lastLine);
621
doc.insert(from.line + 1, added);
623
} else if (newText.length == 1) {
624
firstLine.replace(from.ch, null, newText[0]);
625
lastLine.replace(null, to.ch, "");
626
firstLine.append(lastLine);
627
doc.remove(from.line + 1, nlines, callbacks);
630
firstLine.replace(from.ch, null, newText[0]);
631
lastLine.replace(null, to.ch, newText[newText.length-1]);
632
firstLine.fixMarkEnds(lastLine);
633
for (var i = 1, e = newText.length - 1; i < e; ++i)
634
added.push(Line.inheritMarks(newText[i], firstLine));
635
if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks);
636
doc.insert(from.line + 1, added);
638
if (options.lineWrapping) {
639
var perLine = scroller.clientWidth / charWidth() - 3;
640
doc.iter(from.line, from.line + newText.length, function(line) {
641
if (line.hidden) return;
642
var guess = Math.ceil(line.text.length / perLine) || 1;
643
if (guess != line.height) updateLineHeight(line, guess);
646
doc.iter(from.line, i + newText.length, function(line) {
648
if (l.length > maxLineLength) {
649
maxLine = l; maxLineLength = l.length; maxWidth = null;
650
recomputeMaxLength = false;
653
if (recomputeMaxLength) {
654
maxLineLength = 0; maxLine = ""; maxWidth = null;
655
doc.iter(0, doc.size, function(line) {
657
if (l.length > maxLineLength) {
658
maxLineLength = l.length; maxLine = l;
664
// Add these lines to the work array, so that they will be
665
// highlighted. Adjust work lines if lines were added/removed.
666
var newWork = [], lendiff = newText.length - nlines - 1;
667
for (var i = 0, l = work.length; i < l; ++i) {
669
if (task < from.line) newWork.push(task);
670
else if (task > to.line) newWork.push(task + lendiff);
672
var hlEnd = from.line + Math.min(newText.length, 500);
673
highlightLines(from.line, hlEnd);
677
// Remember that these lines changed, for updating the display
678
changes.push({from: from.line, to: to.line + 1, diff: lendiff});
679
var changeObj = {from: from, to: to, text: newText};
681
for (var cur = textChanged; cur.next; cur = cur.next) {}
682
cur.next = changeObj;
683
} else textChanged = changeObj;
685
// Update the selection
686
function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
687
setSelection(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line));
689
// Make sure the scroll-size div has the correct height.
690
if (scroller.clientHeight)
691
code.style.height = (doc.height * textHeight() + 2 * paddingTop()) + "px";
694
function replaceRange(code, from, to) {
695
from = clipPos(from);
696
if (!to) to = from; else to = clipPos(to);
697
code = splitLines(code);
698
function adjustPos(pos) {
699
if (posLess(pos, from)) return pos;
700
if (!posLess(to, pos)) return end;
701
var line = pos.line + code.length - (to.line - from.line) - 1;
703
if (pos.line == to.line)
704
ch += code[code.length-1].length - (to.ch - (to.line == from.line ? from.ch : 0));
705
return {line: line, ch: ch};
708
replaceRange1(code, from, to, function(end1) {
710
return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
714
function replaceSelection(code, collapse) {
715
replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
716
if (collapse == "end") return {from: end, to: end};
717
else if (collapse == "start") return {from: sel.from, to: sel.from};
718
else return {from: sel.from, to: end};
721
function replaceRange1(code, from, to, computeSel) {
722
var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length;
723
var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
724
updateLines(from, to, code, newSel.from, newSel.to);
727
function getRange(from, to) {
728
var l1 = from.line, l2 = to.line;
729
if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);
730
var code = [getLine(l1).text.slice(from.ch)];
731
doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
732
code.push(getLine(l2).text.slice(0, to.ch));
733
return code.join("\n");
735
function getSelection() {
736
return getRange(sel.from, sel.to);
739
var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
740
function slowPoll() {
741
if (pollingFast) return;
742
poll.set(options.pollInterval, function() {
745
if (focused) slowPoll();
749
function fastPoll() {
754
var changed = readInput();
755
if (!changed && !missed) {missed = true; poll.set(60, p);}
756
else {pollingFast = false; slowPoll();}
762
// Previnput is a hack to work with IME. If we reset the textarea
763
// on every change, that breaks IME. So we look for changes
764
// compared to the previous content instead. (Modern browsers have
765
// events that indicate IME taking place, but these are not widely
766
// supported or compatible enough yet to rely on.)
768
function readInput() {
769
if (leaveInputAlone || !focused || hasSelection(input) || options.readOnly) return false;
770
var text = input.value;
771
if (text == prevInput) return false;
772
shiftSelecting = null;
773
var same = 0, l = Math.min(prevInput.length, text.length);
774
while (same < l && prevInput[same] == text[same]) ++same;
775
if (same < prevInput.length)
776
sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};
777
else if (overwrite && posEq(sel.from, sel.to))
778
sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))};
779
replaceSelection(text.slice(same), "end");
783
function resetInput(user) {
784
if (!posEq(sel.from, sel.to)) {
786
input.value = getSelection();
788
} else if (user) prevInput = input.value = "";
791
function focusInput() {
792
if (options.readOnly != "nocursor") input.focus();
795
function scrollEditorIntoView() {
796
if (!cursor.getBoundingClientRect) return;
797
var rect = cursor.getBoundingClientRect();
798
// IE returns bogus coordinates when the instance sits inside of an iframe and the cursor is hidden
799
if (ie && rect.top == rect.bottom) return;
800
var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
801
if (rect.top < 0 || rect.bottom > winH) cursor.scrollIntoView();
803
function scrollCursorIntoView() {
804
var cursor = localCoords(sel.inverted ? sel.from : sel.to);
805
var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
806
return scrollIntoView(x, cursor.y, x, cursor.yBot);
808
function scrollIntoView(x1, y1, x2, y2) {
809
var pl = paddingLeft(), pt = paddingTop(), lh = textHeight();
810
y1 += pt; y2 += pt; x1 += pl; x2 += pl;
811
var screen = scroller.clientHeight, screentop = scroller.scrollTop, scrolled = false, result = true;
812
if (y1 < screentop) {scroller.scrollTop = Math.max(0, y1 - 2*lh); scrolled = true;}
813
else if (y2 > screentop + screen) {scroller.scrollTop = y2 + lh - screen; scrolled = true;}
815
var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;
816
var gutterw = options.fixedGutter ? gutter.clientWidth : 0;
817
if (x1 < screenleft + gutterw) {
819
scroller.scrollLeft = Math.max(0, x1 - 10 - gutterw);
822
else if (x2 > screenw + screenleft - 3) {
823
scroller.scrollLeft = x2 + 10 - screenw;
825
if (x2 > code.clientWidth) result = false;
827
if (scrolled && options.onScroll) options.onScroll(instance);
831
function visibleLines() {
832
var lh = textHeight(), top = scroller.scrollTop - paddingTop();
833
var from_height = Math.max(0, Math.floor(top / lh));
834
var to_height = Math.ceil((top + scroller.clientHeight) / lh);
835
return {from: lineAtHeight(doc, from_height),
836
to: lineAtHeight(doc, to_height)};
838
// Uses a set of changes plus the current scroll position to
839
// determine which DOM updates have to be made, and makes the
841
function updateDisplay(changes, suppressCallback) {
842
if (!scroller.clientWidth) {
843
showingFrom = showingTo = displayOffset = 0;
846
// Compute the new visible window
847
var visible = visibleLines();
848
// Bail out if the visible area is already rendered and nothing changed.
849
if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) return;
850
var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);
851
if (showingFrom < from && from - showingFrom < 20) from = showingFrom;
852
if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo);
854
// Create a range of theoretically intact lines, and punch holes
855
// in that using the change info.
856
var intact = changes === true ? [] :
857
computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes);
858
// Clip off the parts that won't be visible
860
for (var i = 0; i < intact.length; ++i) {
861
var range = intact[i];
862
if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
863
if (range.to > to) range.to = to;
864
if (range.from >= range.to) intact.splice(i--, 1);
865
else intactLines += range.to - range.from;
867
if (intactLines == to - from) return;
868
intact.sort(function(a, b) {return a.domStart - b.domStart;});
870
var th = textHeight(), gutterDisplay = gutter.style.display;
871
lineDiv.style.display = "none";
872
patchDisplay(from, to, intact);
873
lineDiv.style.display = gutter.style.display = "";
875
// Position the mover div to align with the lines it's supposed
876
// to be showing (which will cover the visible display)
877
var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th;
878
// This is just a bogus formula that detects when the editor is
879
// resized or the font size changes.
880
if (different) lastSizeC = scroller.clientHeight + th;
881
showingFrom = from; showingTo = to;
882
displayOffset = heightAtLine(doc, from);
883
mover.style.top = (displayOffset * th) + "px";
884
if (scroller.clientHeight)
885
code.style.height = (doc.height * th + 2 * paddingTop()) + "px";
887
// Since this is all rather error prone, it is honoured with the
888
// only assertion in the whole file.
889
if (lineDiv.childNodes.length != showingTo - showingFrom)
890
throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) +
891
" nodes=" + lineDiv.childNodes.length);
893
if (options.lineWrapping) {
894
maxWidth = scroller.clientWidth;
895
var curNode = lineDiv.firstChild, heightChanged = false;
896
doc.iter(showingFrom, showingTo, function(line) {
898
var height = Math.round(curNode.offsetHeight / th) || 1;
899
if (line.height != height) {
900
updateLineHeight(line, height);
901
gutterDirty = heightChanged = true;
904
curNode = curNode.nextSibling;
907
code.style.height = (doc.height * th + 2 * paddingTop()) + "px";
909
if (maxWidth == null) maxWidth = stringWidth(maxLine);
910
if (maxWidth > scroller.clientWidth) {
911
lineSpace.style.width = maxWidth + "px";
912
// Needed to prevent odd wrapping/hiding of widgets placed in here.
913
code.style.width = "";
914
code.style.width = scroller.scrollWidth + "px";
916
lineSpace.style.width = code.style.width = "";
919
gutter.style.display = gutterDisplay;
920
if (different || gutterDirty) updateGutter();
922
if (!suppressCallback && options.onUpdate) options.onUpdate(instance);
926
function computeIntact(intact, changes) {
927
for (var i = 0, l = changes.length || 0; i < l; ++i) {
928
var change = changes[i], intact2 = [], diff = change.diff || 0;
929
for (var j = 0, l2 = intact.length; j < l2; ++j) {
930
var range = intact[j];
931
if (change.to <= range.from && change.diff)
932
intact2.push({from: range.from + diff, to: range.to + diff,
933
domStart: range.domStart});
934
else if (change.to <= range.from || change.from >= range.to)
937
if (change.from > range.from)
938
intact2.push({from: range.from, to: change.from, domStart: range.domStart});
939
if (change.to < range.to)
940
intact2.push({from: change.to + diff, to: range.to + diff,
941
domStart: range.domStart + (change.to - range.from)});
949
function patchDisplay(from, to, intact) {
950
// The first pass removes the DOM nodes that aren't intact.
951
if (!intact.length) lineDiv.innerHTML = "";
953
function killNode(node) {
954
var tmp = node.nextSibling;
955
node.parentNode.removeChild(node);
958
var domPos = 0, curNode = lineDiv.firstChild, n;
959
for (var i = 0; i < intact.length; ++i) {
961
while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
962
for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;}
964
while (curNode) curNode = killNode(curNode);
966
// This pass fills in the lines that actually changed.
967
var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from;
968
var scratch = targetDocument.createElement("div"), newElt;
969
doc.iter(from, to, function(line) {
970
if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
971
if (!nextIntact || nextIntact.from > j) {
972
if (line.hidden) var html = scratch.innerHTML = "<pre></pre>";
974
var html = '<pre>' + line.getHTML(tabText) + '</pre>';
975
// Kludge to make sure the styled element lies behind the selection (by z-index)
977
html = '<div style="position: relative"><pre class="' + line.className +
978
'" style="position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2"> </pre>' + html + "</div>";
980
scratch.innerHTML = html;
981
lineDiv.insertBefore(scratch.firstChild, curNode);
983
curNode = curNode.nextSibling;
989
function updateGutter() {
990
if (!options.gutter && !options.lineNumbers) return;
991
var hText = mover.offsetHeight, hEditor = scroller.clientHeight;
992
gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
993
var html = [], i = showingFrom;
994
doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
996
html.push("<pre></pre>");
998
var marker = line.gutterMarker;
999
var text = options.lineNumbers ? i + options.firstLineNumber : null;
1000
if (marker && marker.text)
1001
text = marker.text.replace("%N%", text != null ? text : "");
1002
else if (text == null)
1004
html.push((marker && marker.style ? '<pre class="' + marker.style + '">' : "<pre>"), text);
1005
for (var j = 1; j < line.height; ++j) html.push("<br/> ");
1006
html.push("</pre>");
1010
gutter.style.display = "none";
1011
gutterText.innerHTML = html.join("");
1012
var minwidth = String(doc.size).length, firstNode = gutterText.firstChild, val = eltText(firstNode), pad = "";
1013
while (val.length + pad.length < minwidth) pad += "\u00a0";
1014
if (pad) firstNode.insertBefore(targetDocument.createTextNode(pad), firstNode.firstChild);
1015
gutter.style.display = "";
1016
lineSpace.style.marginLeft = gutter.offsetWidth + "px";
1017
gutterDirty = false;
1019
function updateSelection() {
1020
var collapsed = posEq(sel.from, sel.to);
1021
var fromPos = localCoords(sel.from, true);
1022
var toPos = collapsed ? fromPos : localCoords(sel.to, true);
1023
var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
1024
var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
1025
inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
1026
inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
1028
cursor.style.top = headPos.y + "px";
1029
cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
1030
cursor.style.display = "";
1031
selectionDiv.style.display = "none";
1033
var sameLine = fromPos.y == toPos.y, html = "";
1034
function add(left, top, right, height) {
1035
html += '<div class="CodeMirror-selected" style="position: absolute; left: ' + left +
1036
'px; top: ' + top + 'px; right: ' + right + 'px; height: ' + height + 'px"></div>';
1038
if (sel.from.ch && fromPos.y >= 0) {
1039
var right = sameLine ? lineSpace.clientWidth - toPos.x : 0;
1040
add(fromPos.x, fromPos.y, right, th);
1042
var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
1043
var middleHeight = Math.min(toPos.y, lineSpace.clientHeight) - middleStart;
1044
if (middleHeight > 0.2 * th)
1045
add(0, middleStart, 0, middleHeight);
1046
if ((!sameLine || !sel.from.ch) && toPos.y < lineSpace.clientHeight - .5 * th)
1047
add(0, toPos.y, lineSpace.clientWidth - toPos.x, th);
1048
selectionDiv.innerHTML = html;
1049
cursor.style.display = "none";
1050
selectionDiv.style.display = "";
1054
function setShift(val) {
1055
if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
1056
else shiftSelecting = null;
1058
function setSelectionUser(from, to) {
1059
var sh = shiftSelecting && clipPos(shiftSelecting);
1061
if (posLess(sh, from)) from = sh;
1062
else if (posLess(to, sh)) to = sh;
1064
setSelection(from, to);
1065
userSelChange = true;
1067
// Update the selection. Last two args are only used by
1068
// updateLines, since they have to be expressed in the line
1069
// numbers before the update.
1070
function setSelection(from, to, oldFrom, oldTo) {
1072
if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
1073
if (posEq(sel.from, from) && posEq(sel.to, to)) return;
1074
if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
1076
// Skip over hidden lines.
1077
if (from.line != oldFrom) from = skipHidden(from, oldFrom, sel.from.ch);
1078
if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
1080
if (posEq(from, to)) sel.inverted = false;
1081
else if (posEq(from, sel.to)) sel.inverted = false;
1082
else if (posEq(to, sel.from)) sel.inverted = true;
1084
sel.from = from; sel.to = to;
1085
selectionChanged = true;
1087
function skipHidden(pos, oldLine, oldCh) {
1088
function getNonHidden(dir) {
1089
var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
1090
while (lNo != end) {
1091
var line = getLine(lNo);
1094
if (ch > oldCh || ch > line.text.length) ch = line.text.length;
1095
return {line: lNo, ch: ch};
1100
var line = getLine(pos.line);
1101
if (!line.hidden) return pos;
1102
if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
1103
else return getNonHidden(-1) || getNonHidden(1);
1105
function setCursor(line, ch, user) {
1106
var pos = clipPos({line: line, ch: ch || 0});
1107
(user ? setSelectionUser : setSelection)(pos, pos);
1110
function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
1111
function clipPos(pos) {
1112
if (pos.line < 0) return {line: 0, ch: 0};
1113
if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
1114
var ch = pos.ch, linelen = getLine(pos.line).text.length;
1115
if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
1116
else if (ch < 0) return {line: pos.line, ch: 0};
1120
function findPosH(dir, unit) {
1121
var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
1122
var lineObj = getLine(line);
1123
function findNextLine() {
1124
for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
1125
var lo = getLine(l);
1126
if (!lo.hidden) { line = l; lineObj = lo; return true; }
1129
function moveOnce(boundToLine) {
1130
if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
1131
if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
1136
if (unit == "char") moveOnce();
1137
else if (unit == "column") moveOnce(true);
1138
else if (unit == "word") {
1139
var sawWord = false;
1141
if (dir < 0) if (!moveOnce()) break;
1142
if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
1143
else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
1144
if (dir > 0) if (!moveOnce()) break;
1147
return {line: line, ch: ch};
1149
function moveH(dir, unit) {
1150
var pos = dir < 0 ? sel.from : sel.to;
1151
if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
1152
setCursor(pos.line, pos.ch, true);
1154
function deleteH(dir, unit) {
1155
if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
1156
else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
1157
else replaceRange("", sel.from, findPosH(dir, unit));
1158
userSelChange = true;
1160
var goalColumn = null;
1161
function moveV(dir, unit) {
1162
var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true);
1163
if (goalColumn != null) pos.x = goalColumn;
1164
if (unit == "page") dist = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
1165
else if (unit == "line") dist = textHeight();
1166
var target = coordsChar(pos.x, pos.y + dist * dir + 2);
1167
setCursor(target.line, target.ch, true);
1171
function selectWordAt(pos) {
1172
var line = getLine(pos.line).text;
1173
var start = pos.ch, end = pos.ch;
1174
while (start > 0 && isWordChar(line.charAt(start - 1))) --start;
1175
while (end < line.length && isWordChar(line.charAt(end))) ++end;
1176
setSelectionUser({line: pos.line, ch: start}, {line: pos.line, ch: end});
1178
function selectLine(line) {
1179
setSelectionUser({line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
1181
function indentSelected(mode) {
1182
if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
1183
var e = sel.to.line - (sel.to.ch ? 0 : 1);
1184
for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
1187
function indentLine(n, how) {
1188
if (!how) how = "add";
1189
if (how == "smart") {
1190
if (!mode.indent) how = "prev";
1191
else var state = getStateBefore(n);
1194
var line = getLine(n), curSpace = line.indentation(options.tabSize),
1195
curSpaceString = line.text.match(/^\s*/)[0], indentation;
1196
if (how == "prev") {
1197
if (n) indentation = getLine(n-1).indentation(options.tabSize);
1198
else indentation = 0;
1200
else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
1201
else if (how == "add") indentation = curSpace + options.indentUnit;
1202
else if (how == "subtract") indentation = curSpace - options.indentUnit;
1203
indentation = Math.max(0, indentation);
1204
var diff = indentation - curSpace;
1207
if (sel.from.line != n && sel.to.line != n) return;
1208
var indentString = curSpaceString;
1211
var indentString = "", pos = 0;
1212
if (options.indentWithTabs)
1213
for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
1214
while (pos < indentation) {++pos; indentString += " ";}
1217
replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
1220
function loadMode() {
1221
mode = CodeMirror.getMode(options, options.mode);
1222
doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
1226
function gutterChanged() {
1227
var visible = options.gutter || options.lineNumbers;
1228
gutter.style.display = visible ? "" : "none";
1229
if (visible) gutterDirty = true;
1230
else lineDiv.parentNode.style.marginLeft = 0;
1232
function wrappingChanged(from, to) {
1233
if (options.lineWrapping) {
1234
wrapper.className += " CodeMirror-wrap";
1235
var perLine = scroller.clientWidth / charWidth() - 3;
1236
doc.iter(0, doc.size, function(line) {
1237
if (line.hidden) return;
1238
var guess = Math.ceil(line.text.length / perLine) || 1;
1239
if (guess != 1) updateLineHeight(line, guess);
1241
lineSpace.style.width = code.style.width = "";
1243
wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
1244
maxWidth = null; maxLine = "";
1245
doc.iter(0, doc.size, function(line) {
1246
if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
1247
if (line.text.length > maxLine.length) maxLine = line.text;
1250
changes.push({from: 0, to: doc.size});
1252
function computeTabText() {
1253
for (var str = '<span class="cm-tab">', i = 0; i < options.tabSize; ++i) str += " ";
1254
return str + "</span>";
1256
function tabsChanged() {
1257
tabText = computeTabText();
1258
updateDisplay(true);
1260
function themeChanged() {
1261
scroller.className = scroller.className.replace(/\s*cm-s-\w+/g, "") +
1262
options.theme.replace(/(^|\s)\s*/g, " cm-s-");
1265
function TextMarker() { this.set = []; }
1266
TextMarker.prototype.clear = operation(function() {
1267
var min = Infinity, max = -Infinity;
1268
for (var i = 0, e = this.set.length; i < e; ++i) {
1269
var line = this.set[i], mk = line.marked;
1270
if (!mk || !line.parent) continue;
1271
var lineN = lineNo(line);
1272
min = Math.min(min, lineN); max = Math.max(max, lineN);
1273
for (var j = 0; j < mk.length; ++j)
1274
if (mk[j].set == this.set) mk.splice(j--, 1);
1276
if (min != Infinity)
1277
changes.push({from: min, to: max + 1});
1279
TextMarker.prototype.find = function() {
1281
for (var i = 0, e = this.set.length; i < e; ++i) {
1282
var line = this.set[i], mk = line.marked;
1283
for (var j = 0; j < mk.length; ++j) {
1285
if (mark.set == this.set) {
1286
if (mark.from != null || mark.to != null) {
1287
var found = lineNo(line);
1288
if (found != null) {
1289
if (mark.from != null) from = {line: found, ch: mark.from};
1290
if (mark.to != null) to = {line: found, ch: mark.to};
1296
return {from: from, to: to};
1299
function markText(from, to, className) {
1300
from = clipPos(from); to = clipPos(to);
1301
var tm = new TextMarker();
1302
function add(line, from, to, className) {
1303
getLine(line).addMark(new MarkedText(from, to, className, tm.set));
1305
if (from.line == to.line) add(from.line, from.ch, to.ch, className);
1307
add(from.line, from.ch, null, className);
1308
for (var i = from.line + 1, e = to.line; i < e; ++i)
1309
add(i, null, null, className);
1310
add(to.line, null, to.ch, className);
1312
changes.push({from: from.line, to: to.line + 1});
1316
function setBookmark(pos) {
1318
var bm = new Bookmark(pos.ch);
1319
getLine(pos.line).addMark(bm);
1323
function addGutterMarker(line, text, className) {
1324
if (typeof line == "number") line = getLine(clipLine(line));
1325
line.gutterMarker = {text: text, style: className};
1329
function removeGutterMarker(line) {
1330
if (typeof line == "number") line = getLine(clipLine(line));
1331
line.gutterMarker = null;
1335
function changeLine(handle, op) {
1336
var no = handle, line = handle;
1337
if (typeof handle == "number") line = getLine(clipLine(handle));
1338
else no = lineNo(handle);
1339
if (no == null) return null;
1340
if (op(line, no)) changes.push({from: no, to: no + 1});
1344
function setLineClass(handle, className) {
1345
return changeLine(handle, function(line) {
1346
if (line.className != className) {
1347
line.className = className;
1352
function setLineHidden(handle, hidden) {
1353
return changeLine(handle, function(line, no) {
1354
if (line.hidden != hidden) {
1355
line.hidden = hidden;
1356
updateLineHeight(line, hidden ? 0 : 1);
1357
var fline = sel.from.line, tline = sel.to.line;
1358
if (hidden && (fline == no || tline == no)) {
1359
var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
1360
var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
1361
setSelection(from, to);
1363
return (gutterDirty = true);
1368
function lineInfo(line) {
1369
if (typeof line == "number") {
1370
if (!isLine(line)) return null;
1372
line = getLine(line);
1373
if (!line) return null;
1376
var n = lineNo(line);
1377
if (n == null) return null;
1379
var marker = line.gutterMarker;
1380
return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
1381
markerClass: marker && marker.style, lineClass: line.className};
1384
function stringWidth(str) {
1385
measure.innerHTML = "<pre><span>x</span></pre>";
1386
measure.firstChild.firstChild.firstChild.nodeValue = str;
1387
return measure.firstChild.firstChild.offsetWidth || 10;
1389
// These are used to go from pixel positions to character
1390
// positions, taking varying character widths into account.
1391
function charFromX(line, x) {
1392
if (x <= 0) return 0;
1393
var lineObj = getLine(line), text = lineObj.text;
1394
function getX(len) {
1395
measure.innerHTML = "<pre><span>" + lineObj.getHTML(tabText, len) + "</span></pre>";
1396
return measure.firstChild.firstChild.offsetWidth;
1398
var from = 0, fromX = 0, to = text.length, toX;
1399
// Guess a suitable upper bound for our search.
1400
var estimated = Math.min(to, Math.ceil(x / charWidth()));
1402
var estX = getX(estimated);
1403
if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
1404
else {toX = estX; to = estimated; break;}
1406
if (x > toX) return to;
1407
// Try to guess a suitable lower bound as well.
1408
estimated = Math.floor(to * 0.8); estX = getX(estimated);
1409
if (estX < x) {from = estimated; fromX = estX;}
1410
// Do a binary search between these bounds.
1412
if (to - from <= 1) return (toX - x > x - fromX) ? from : to;
1413
var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
1414
if (middleX > x) {to = middle; toX = middleX;}
1415
else {from = middle; fromX = middleX;}
1419
var tempId = Math.floor(Math.random() * 0xffffff).toString(16);
1420
function measureLine(line, ch) {
1421
if (ch == 0) return {top: 0, left: 0};
1423
// Include extra text at the end to make sure the measured line is wrapped in the right way.
1424
if (options.lineWrapping) {
1425
var end = line.text.indexOf(" ", ch + 2);
1426
extra = htmlEscape(line.text.slice(ch + 1, end < 0 ? line.text.length : end + (ie ? 5 : 0)));
1428
measure.innerHTML = "<pre>" + line.getHTML(tabText, ch) +
1429
'<span id="CodeMirror-temp-' + tempId + '">' + htmlEscape(line.text.charAt(ch) || " ") + "</span>" +
1431
var elt = document.getElementById("CodeMirror-temp-" + tempId);
1432
var top = elt.offsetTop, left = elt.offsetLeft;
1433
// Older IEs report zero offsets for spans directly after a wrap
1434
if (ie && top == 0 && left == 0) {
1435
var backup = document.createElement("span");
1436
backup.innerHTML = "x";
1437
elt.parentNode.insertBefore(backup, elt.nextSibling);
1438
top = backup.offsetTop;
1440
return {top: top, left: left};
1442
function localCoords(pos, inLineWrap) {
1443
var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
1444
if (pos.ch == 0) x = 0;
1446
var sp = measureLine(getLine(pos.line), pos.ch);
1448
if (options.lineWrapping) y += Math.max(0, sp.top);
1450
return {x: x, y: y, yBot: y + lh};
1452
// Coords must be lineSpace-local
1453
function coordsChar(x, y) {
1455
var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
1456
var lineNo = lineAtHeight(doc, heightPos);
1457
if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length};
1458
var lineObj = getLine(lineNo), text = lineObj.text;
1459
var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;
1460
if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0};
1461
function getX(len) {
1462
var sp = measureLine(lineObj, len);
1464
var off = Math.round(sp.top / th);
1465
return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth);
1469
var from = 0, fromX = 0, to = text.length, toX;
1470
// Guess a suitable upper bound for our search.
1471
var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw));
1473
var estX = getX(estimated);
1474
if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
1475
else {toX = estX; to = estimated; break;}
1477
if (x > toX) return {line: lineNo, ch: to};
1478
// Try to guess a suitable lower bound as well.
1479
estimated = Math.floor(to * 0.8); estX = getX(estimated);
1480
if (estX < x) {from = estimated; fromX = estX;}
1481
// Do a binary search between these bounds.
1483
if (to - from <= 1) return {line: lineNo, ch: (toX - x > x - fromX) ? from : to};
1484
var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
1485
if (middleX > x) {to = middle; toX = middleX;}
1486
else {from = middle; fromX = middleX;}
1489
function pageCoords(pos) {
1490
var local = localCoords(pos, true), off = eltOffset(lineSpace);
1491
return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
1494
var cachedHeight, cachedHeightFor, measureText;
1495
function textHeight() {
1496
if (measureText == null) {
1497
measureText = "<pre>";
1498
for (var i = 0; i < 49; ++i) measureText += "x<br/>";
1499
measureText += "x</pre>";
1501
var offsetHeight = lineDiv.clientHeight;
1502
if (offsetHeight == cachedHeightFor) return cachedHeight;
1503
cachedHeightFor = offsetHeight;
1504
measure.innerHTML = measureText;
1505
cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
1506
measure.innerHTML = "";
1507
return cachedHeight;
1509
var cachedWidth, cachedWidthFor = 0;
1510
function charWidth() {
1511
if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
1512
cachedWidthFor = scroller.clientWidth;
1513
return (cachedWidth = stringWidth("x"));
1515
function paddingTop() {return lineSpace.offsetTop;}
1516
function paddingLeft() {return lineSpace.offsetLeft;}
1518
function posFromMouse(e, liberal) {
1519
var offW = eltOffset(scroller, true), x, y;
1520
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
1521
try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
1522
// This is a mess of a heuristic to try and determine whether a
1523
// scroll-bar was clicked or not, and to return null if one was
1525
if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
1527
var offL = eltOffset(lineSpace, true);
1528
return coordsChar(x - offL.left, y - offL.top);
1530
function onContextMenu(e) {
1531
var pos = posFromMouse(e);
1532
if (!pos || window.opera) return; // Opera is difficult.
1533
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
1534
operation(setCursor)(pos.line, pos.ch);
1536
var oldCSS = input.style.cssText;
1537
inputDiv.style.position = "absolute";
1538
input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
1539
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
1540
"border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
1541
leaveInputAlone = true;
1542
var val = input.value = getSelection();
1546
var newVal = splitLines(input.value).join("\n");
1547
if (newVal != val) operation(replaceSelection)(newVal, "end");
1548
inputDiv.style.position = "relative";
1549
input.style.cssText = oldCSS;
1550
leaveInputAlone = false;
1557
var mouseup = connect(window, "mouseup", function() {
1559
setTimeout(rehide, 20);
1563
setTimeout(rehide, 50);
1568
function restartBlink() {
1569
clearInterval(blinker);
1571
cursor.style.visibility = "";
1572
blinker = setInterval(function() {
1573
cursor.style.visibility = (on = !on) ? "" : "hidden";
1577
var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
1578
function matchBrackets(autoclear) {
1579
var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
1580
var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
1582
var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
1583
for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
1584
if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
1586
var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
1587
function scan(line, from, to) {
1588
if (!line.text) return;
1589
var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
1590
for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
1592
if (st[i+1] != null && st[i+1] != style) {pos += d * text.length; continue;}
1593
for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
1594
if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
1595
var match = matching[cur];
1596
if (match.charAt(1) == ">" == forward) stack.push(cur);
1597
else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
1598
else if (!stack.length) return {pos: pos, match: true};
1603
for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
1604
var line = getLine(i), first = i == head.line;
1605
var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
1608
if (!found) found = {pos: null, match: false};
1609
var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
1610
var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
1611
two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
1612
var clear = operation(function(){one.clear(); two && two.clear();});
1613
if (autoclear) setTimeout(clear, 800);
1614
else bracketHighlighted = clear;
1617
// Finds the line to start with when starting a parse. Tries to
1618
// find a line with a stateAfter, so that it can start with a
1619
// valid state. If that fails, it returns the line with the
1620
// smallest indentation, which tends to need the least context to
1622
function findStartLine(n) {
1623
var minindent, minline;
1624
for (var search = n, lim = n - 40; search > lim; --search) {
1625
if (search == 0) return 0;
1626
var line = getLine(search-1);
1627
if (line.stateAfter) return search;
1628
var indented = line.indentation(options.tabSize);
1629
if (minline == null || minindent > indented) {
1630
minline = search - 1;
1631
minindent = indented;
1636
function getStateBefore(n) {
1637
var start = findStartLine(n), state = start && getLine(start-1).stateAfter;
1638
if (!state) state = startState(mode);
1639
else state = copyState(mode, state);
1640
doc.iter(start, n, function(line) {
1641
line.highlight(mode, state, options.tabSize);
1642
line.stateAfter = copyState(mode, state);
1644
if (start < n) changes.push({from: start, to: n});
1645
if (n < doc.size && !getLine(n).stateAfter) work.push(n);
1648
function highlightLines(start, end) {
1649
var state = getStateBefore(start);
1650
doc.iter(start, end, function(line) {
1651
line.highlight(mode, state, options.tabSize);
1652
line.stateAfter = copyState(mode, state);
1655
function highlightWorker() {
1656
var end = +new Date + options.workTime;
1657
var foundWork = work.length;
1658
while (work.length) {
1659
if (!getLine(showingFrom).stateAfter) var task = showingFrom;
1660
else var task = work.pop();
1661
if (task >= doc.size) continue;
1662
var start = findStartLine(task), state = start && getLine(start-1).stateAfter;
1663
if (state) state = copyState(mode, state);
1664
else state = startState(mode);
1666
var unchanged = 0, compare = mode.compareStates, realChange = false,
1667
i = start, bail = false;
1668
doc.iter(i, doc.size, function(line) {
1669
var hadState = line.stateAfter;
1670
if (+new Date > end) {
1672
startWorker(options.workDelay);
1673
if (realChange) changes.push({from: task, to: i + 1});
1674
return (bail = true);
1676
var changed = line.highlight(mode, state, options.tabSize);
1677
if (changed) realChange = true;
1678
line.stateAfter = copyState(mode, state);
1680
if (hadState && compare(hadState, state)) return true;
1682
if (changed !== false || !hadState) unchanged = 0;
1683
else if (++unchanged > 3 && (!mode.indent || mode.indent(hadState, "") == mode.indent(state, "")))
1689
if (realChange) changes.push({from: task, to: i + 1});
1691
if (foundWork && options.onHighlightComplete)
1692
options.onHighlightComplete(instance);
1694
function startWorker(time) {
1695
if (!work.length) return;
1696
highlight.set(time, operation(highlightWorker));
1699
// Operations are used to wrap changes in such a way that each
1700
// change won't have to update the cursor and display (which would
1701
// be awkward, slow, and error-prone), but instead updates are
1702
// batched and then all combined and executed at once.
1703
function startOperation() {
1704
updateInput = userSelChange = textChanged = null;
1705
changes = []; selectionChanged = false; callbacks = [];
1707
function endOperation() {
1708
var reScroll = false, updated;
1709
if (selectionChanged) reScroll = !scrollCursorIntoView();
1710
if (changes.length) updated = updateDisplay(changes, true);
1712
if (selectionChanged) updateSelection();
1713
if (gutterDirty) updateGutter();
1715
if (reScroll) scrollCursorIntoView();
1716
if (selectionChanged) {scrollEditorIntoView(); restartBlink();}
1718
if (focused && !leaveInputAlone &&
1719
(updateInput === true || (updateInput !== false && selectionChanged)))
1720
resetInput(userSelChange);
1722
if (selectionChanged && options.matchBrackets)
1723
setTimeout(operation(function() {
1724
if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
1725
if (posEq(sel.from, sel.to)) matchBrackets(false);
1727
var tc = textChanged, cbs = callbacks; // these can be reset by callbacks
1728
if (selectionChanged && options.onCursorActivity)
1729
options.onCursorActivity(instance);
1730
if (tc && options.onChange && instance)
1731
options.onChange(instance, tc);
1732
for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
1733
if (updated && options.onUpdate) options.onUpdate(instance);
1735
var nestedOperation = 0;
1736
function operation(f) {
1738
if (!nestedOperation++) startOperation();
1739
try {var result = f.apply(this, arguments);}
1740
finally {if (!--nestedOperation) endOperation();}
1745
for (var ext in extensions)
1746
if (extensions.propertyIsEnumerable(ext) &&
1747
!instance.propertyIsEnumerable(ext))
1748
instance[ext] = extensions[ext];
1750
} // (end of function CodeMirror)
1752
// The default configuration options.
1753
CodeMirror.defaults = {
1758
indentWithTabs: false,
1763
electricChars: true,
1765
lineWrapping: false,
1772
onCursorActivity: null,
1773
onGutterClick: null,
1774
onHighlightComplete: null,
1776
onFocus: null, onBlur: null, onScroll: null,
1777
matchBrackets: false,
1783
document: window.document
1786
var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
1787
var mac = ios || /Mac/.test(navigator.platform);
1788
var win = /Win/.test(navigator.platform);
1790
// Known modes, by name and by MIME
1791
var modes = {}, mimeModes = {};
1792
CodeMirror.defineMode = function(name, mode) {
1793
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
1796
CodeMirror.defineMIME = function(mime, spec) {
1797
mimeModes[mime] = spec;
1799
CodeMirror.getMode = function(options, spec) {
1800
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
1801
spec = mimeModes[spec];
1802
if (typeof spec == "string")
1803
var mname = spec, config = {};
1804
else if (spec != null)
1805
var mname = spec.name, config = spec;
1806
var mfactory = modes[mname];
1808
if (window.console) console.warn("No mode " + mname + " found, falling back to plain text.");
1809
return CodeMirror.getMode(options, "text/plain");
1811
return mfactory(options, config || {});
1813
CodeMirror.listModes = function() {
1815
for (var m in modes)
1816
if (modes.propertyIsEnumerable(m)) list.push(m);
1819
CodeMirror.listMIMEs = function() {
1821
for (var m in mimeModes)
1822
if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
1826
var extensions = CodeMirror.extensions = {};
1827
CodeMirror.defineExtension = function(name, func) {
1828
extensions[name] = func;
1831
var commands = CodeMirror.commands = {
1832
selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
1833
killLine: function(cm) {
1834
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
1835
if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
1836
else cm.replaceRange("", from, sel ? to : {line: from.line});
1838
deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
1839
undo: function(cm) {cm.undo();},
1840
redo: function(cm) {cm.redo();},
1841
goDocStart: function(cm) {cm.setCursor(0, 0, true);},
1842
goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
1843
goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
1844
goLineStartSmart: function(cm) {
1845
var cur = cm.getCursor();
1846
var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
1847
cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
1849
goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
1850
goLineUp: function(cm) {cm.moveV(-1, "line");},
1851
goLineDown: function(cm) {cm.moveV(1, "line");},
1852
goPageUp: function(cm) {cm.moveV(-1, "page");},
1853
goPageDown: function(cm) {cm.moveV(1, "page");},
1854
goCharLeft: function(cm) {cm.moveH(-1, "char");},
1855
goCharRight: function(cm) {cm.moveH(1, "char");},
1856
goColumnLeft: function(cm) {cm.moveH(-1, "column");},
1857
goColumnRight: function(cm) {cm.moveH(1, "column");},
1858
goWordLeft: function(cm) {cm.moveH(-1, "word");},
1859
goWordRight: function(cm) {cm.moveH(1, "word");},
1860
delCharLeft: function(cm) {cm.deleteH(-1, "char");},
1861
delCharRight: function(cm) {cm.deleteH(1, "char");},
1862
delWordLeft: function(cm) {cm.deleteH(-1, "word");},
1863
delWordRight: function(cm) {cm.deleteH(1, "word");},
1864
indentAuto: function(cm) {cm.indentSelection("smart");},
1865
indentMore: function(cm) {cm.indentSelection("add");},
1866
indentLess: function(cm) {cm.indentSelection("subtract");},
1867
insertTab: function(cm) {cm.replaceSelection("\t", "end");},
1868
transposeChars: function(cm) {
1869
var cur = cm.getCursor(), line = cm.getLine(cur.line);
1870
if (cur.ch > 0 && cur.ch < line.length - 1)
1871
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
1872
{line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
1874
newlineAndIndent: function(cm) {
1875
cm.replaceSelection("\n", "end");
1876
cm.indentLine(cm.getCursor().line);
1878
toggleOverwrite: function(cm) {cm.toggleOverwrite();}
1881
var keyMap = CodeMirror.keyMap = {};
1883
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
1884
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
1885
"Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "indentMore", "Shift-Tab": "indentLess",
1886
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
1888
// Note that the save and find-related commands aren't defined by
1889
// default. Unknown commands are simply ignored.
1890
keyMap.pcDefault = {
1891
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
1892
"Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
1893
"Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
1894
"Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "Ctrl-S": "save", "Ctrl-F": "find",
1895
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
1896
fallthrough: "basic"
1898
keyMap.macDefault = {
1899
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
1900
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
1901
"Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
1902
"Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "Cmd-S": "save", "Cmd-F": "find",
1903
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
1904
fallthrough: ["basic", "emacsy"]
1906
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
1908
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
1909
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
1910
"Ctrl-V": "goPageUp", "Shift-Ctrl-V": "goPageDown", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft",
1911
"Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
1914
function lookupKey(name, extraMap, map) {
1915
function lookup(name, map, ft) {
1916
var found = map[name];
1917
if (found != null) return found;
1918
if (ft == null) ft = map.fallthrough;
1919
if (ft == null) return map.catchall;
1920
if (typeof ft == "string") return lookup(name, keyMap[ft]);
1921
for (var i = 0, e = ft.length; i < e; ++i) {
1922
found = lookup(name, keyMap[ft[i]]);
1923
if (found != null) return found;
1927
return extraMap ? lookup(name, extraMap, map) : lookup(name, keyMap[map]);
1929
function isModifierKey(event) {
1930
var name = keyNames[e_prop(event, "keyCode")];
1931
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
1934
CodeMirror.fromTextArea = function(textarea, options) {
1935
if (!options) options = {};
1936
options.value = textarea.value;
1937
if (!options.tabindex && textarea.tabindex)
1938
options.tabindex = textarea.tabindex;
1940
function save() {textarea.value = instance.getValue();}
1941
if (textarea.form) {
1942
// Deplorable hack to make the submit method do the right thing.
1943
var rmSubmit = connect(textarea.form, "submit", save, true);
1944
if (typeof textarea.form.submit == "function") {
1945
var realSubmit = textarea.form.submit;
1946
function wrappedSubmit() {
1948
textarea.form.submit = realSubmit;
1949
textarea.form.submit();
1950
textarea.form.submit = wrappedSubmit;
1952
textarea.form.submit = wrappedSubmit;
1956
textarea.style.display = "none";
1957
var instance = CodeMirror(function(node) {
1958
textarea.parentNode.insertBefore(node, textarea.nextSibling);
1960
instance.save = save;
1961
instance.getTextArea = function() { return textarea; };
1962
instance.toTextArea = function() {
1964
textarea.parentNode.removeChild(instance.getWrapperElement());
1965
textarea.style.display = "";
1966
if (textarea.form) {
1968
if (typeof textarea.form.submit == "function")
1969
textarea.form.submit = realSubmit;
1975
// Utility functions for working with state. Exported because modes
1976
// sometimes need to do this.
1977
function copyState(mode, state) {
1978
if (state === true) return state;
1979
if (mode.copyState) return mode.copyState(state);
1981
for (var n in state) {
1983
if (val instanceof Array) val = val.concat([]);
1988
CodeMirror.copyState = copyState;
1989
function startState(mode, a1, a2) {
1990
return mode.startState ? mode.startState(a1, a2) : true;
1992
CodeMirror.startState = startState;
1994
// The character stream used by a mode's parser.
1995
function StringStream(string, tabSize) {
1996
this.pos = this.start = 0;
1997
this.string = string;
1998
this.tabSize = tabSize || 8;
2000
StringStream.prototype = {
2001
eol: function() {return this.pos >= this.string.length;},
2002
sol: function() {return this.pos == 0;},
2003
peek: function() {return this.string.charAt(this.pos);},
2005
if (this.pos < this.string.length)
2006
return this.string.charAt(this.pos++);
2008
eat: function(match) {
2009
var ch = this.string.charAt(this.pos);
2010
if (typeof match == "string") var ok = ch == match;
2011
else var ok = ch && (match.test ? match.test(ch) : match(ch));
2012
if (ok) {++this.pos; return ch;}
2014
eatWhile: function(match) {
2015
var start = this.pos;
2016
while (this.eat(match)){}
2017
return this.pos > start;
2019
eatSpace: function() {
2020
var start = this.pos;
2021
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
2022
return this.pos > start;
2024
skipToEnd: function() {this.pos = this.string.length;},
2025
skipTo: function(ch) {
2026
var found = this.string.indexOf(ch, this.pos);
2027
if (found > -1) {this.pos = found; return true;}
2029
backUp: function(n) {this.pos -= n;},
2030
column: function() {return countColumn(this.string, this.start, this.tabSize);},
2031
indentation: function() {return countColumn(this.string, null, this.tabSize);},
2032
match: function(pattern, consume, caseInsensitive) {
2033
if (typeof pattern == "string") {
2034
function cased(str) {return caseInsensitive ? str.toLowerCase() : str;}
2035
if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
2036
if (consume !== false) this.pos += pattern.length;
2041
var match = this.string.slice(this.pos).match(pattern);
2042
if (match && consume !== false) this.pos += match[0].length;
2046
current: function(){return this.string.slice(this.start, this.pos);}
2048
CodeMirror.StringStream = StringStream;
2050
function MarkedText(from, to, className, set) {
2051
this.from = from; this.to = to; this.style = className; this.set = set;
2053
MarkedText.prototype = {
2054
attach: function(line) { this.set.push(line); },
2055
detach: function(line) {
2056
var ix = indexOf(this.set, line);
2057
if (ix > -1) this.set.splice(ix, 1);
2059
split: function(pos, lenBefore) {
2060
if (this.to <= pos && this.to != null) return null;
2061
var from = this.from < pos || this.from == null ? null : this.from - pos + lenBefore;
2062
var to = this.to == null ? null : this.to - pos + lenBefore;
2063
return new MarkedText(from, to, this.style, this.set);
2065
dup: function() { return new MarkedText(null, null, this.style, this.set); },
2066
clipTo: function(fromOpen, from, toOpen, to, diff) {
2067
if (this.from != null && this.from >= from)
2068
this.from = Math.max(to, this.from) + diff;
2069
if (this.to != null && this.to > from)
2070
this.to = to < this.to ? this.to + diff : from;
2071
if (fromOpen && to > this.from && (to < this.to || this.to == null))
2073
if (toOpen && (from < this.to || this.to == null) && (from > this.from || this.from == null))
2076
isDead: function() { return this.from != null && this.to != null && this.from >= this.to; },
2077
sameSet: function(x) { return this.set == x.set; }
2080
function Bookmark(pos) {
2081
this.from = pos; this.to = pos; this.line = null;
2083
Bookmark.prototype = {
2084
attach: function(line) { this.line = line; },
2085
detach: function(line) { if (this.line == line) this.line = null; },
2086
split: function(pos, lenBefore) {
2087
if (pos < this.from) {
2088
this.from = this.to = (this.from - pos) + lenBefore;
2092
isDead: function() { return this.from > this.to; },
2093
clipTo: function(fromOpen, from, toOpen, to, diff) {
2094
if ((fromOpen || from < this.from) && (toOpen || to > this.to)) {
2095
this.from = 0; this.to = -1;
2096
} else if (this.from > from) {
2097
this.from = this.to = Math.max(to, this.from) + diff;
2100
sameSet: function(x) { return false; },
2102
if (!this.line || !this.line.parent) return null;
2103
return {line: lineNo(this.line), ch: this.from};
2107
var found = indexOf(this.line.marked, this);
2108
if (found != -1) this.line.marked.splice(found, 1);
2114
// Line objects. These hold state related to a line, including
2115
// highlighting info (the styles array).
2116
function Line(text, styles) {
2117
this.styles = styles || [text, null];
2120
this.marked = this.gutterMarker = this.className = this.handlers = null;
2121
this.stateAfter = this.parent = this.hidden = null;
2123
Line.inheritMarks = function(text, orig) {
2124
var ln = new Line(text), mk = orig && orig.marked;
2126
for (var i = 0; i < mk.length; ++i) {
2127
if (mk[i].to == null && mk[i].style) {
2128
var newmk = ln.marked || (ln.marked = []), mark = mk[i];
2129
var nmark = mark.dup(); newmk.push(nmark); nmark.attach(ln);
2136
// Replace a piece of a line, keeping the styles around it intact.
2137
replace: function(from, to_, text) {
2138
var st = [], mk = this.marked, to = to_ == null ? this.text.length : to_;
2139
copyStyles(0, from, this.styles, st);
2140
if (text) st.push(text, null);
2141
copyStyles(to, this.text.length, this.styles, st);
2143
this.text = this.text.slice(0, from) + text + this.text.slice(to);
2144
this.stateAfter = null;
2146
var diff = text.length - (to - from);
2147
for (var i = 0; i < mk.length; ++i) {
2149
mark.clipTo(from == null, from || 0, to_ == null, to, diff);
2150
if (mark.isDead()) {mark.detach(this); mk.splice(i--, 1);}
2154
// Split a part off a line, keeping styles and markers intact.
2155
split: function(pos, textBefore) {
2156
var st = [textBefore, null], mk = this.marked;
2157
copyStyles(pos, this.text.length, this.styles, st);
2158
var taken = new Line(textBefore + this.text.slice(pos), st);
2160
for (var i = 0; i < mk.length; ++i) {
2162
var newmark = mark.split(pos, textBefore.length);
2164
if (!taken.marked) taken.marked = [];
2165
taken.marked.push(newmark); newmark.attach(taken);
2171
append: function(line) {
2172
var mylen = this.text.length, mk = line.marked, mymk = this.marked;
2173
this.text += line.text;
2174
copyStyles(0, line.text.length, line.styles, this.styles);
2176
for (var i = 0; i < mymk.length; ++i)
2177
if (mymk[i].to == null) mymk[i].to = mylen;
2179
if (mk && mk.length) {
2180
if (!mymk) this.marked = mymk = [];
2181
outer: for (var i = 0; i < mk.length; ++i) {
2184
for (var j = 0; j < mymk.length; ++j) {
2185
var mymark = mymk[j];
2186
if (mymark.to == mylen && mymark.sameSet(mark)) {
2187
mymark.to = mark.to == null ? null : mark.to + mylen;
2188
if (mymark.isDead()) {
2189
mymark.detach(this);
2199
if (mark.to != null) mark.to += mylen;
2203
fixMarkEnds: function(other) {
2204
var mk = this.marked, omk = other.marked;
2206
for (var i = 0; i < mk.length; ++i) {
2207
var mark = mk[i], close = mark.to == null;
2209
for (var j = 0; j < omk.length; ++j)
2210
if (omk[j].sameSet(mark)) {close = false; break;}
2212
if (close) mark.to = this.text.length;
2215
fixMarkStarts: function() {
2216
var mk = this.marked;
2218
for (var i = 0; i < mk.length; ++i)
2219
if (mk[i].from == null) mk[i].from = 0;
2221
addMark: function(mark) {
2223
if (this.marked == null) this.marked = [];
2224
this.marked.push(mark);
2225
this.marked.sort(function(a, b){return (a.from || 0) - (b.from || 0);});
2227
// Run the given mode's parser over a line, update the styles
2228
// array, which contains alternating fragments of text and CSS
2230
highlight: function(mode, state, tabSize) {
2231
var stream = new StringStream(this.text, tabSize), st = this.styles, pos = 0;
2232
var changed = false, curWord = st[0], prevWord;
2233
if (this.text == "" && mode.blankLine) mode.blankLine(state);
2234
while (!stream.eol()) {
2235
var style = mode.token(stream, state);
2236
var substr = this.text.slice(stream.start, stream.pos);
2237
stream.start = stream.pos;
2238
if (pos && st[pos-1] == style)
2239
st[pos-2] += substr;
2241
if (!changed && (st[pos+1] != style || (pos && st[pos-2] != prevWord))) changed = true;
2242
st[pos++] = substr; st[pos++] = style;
2243
prevWord = curWord; curWord = st[pos];
2245
// Give up when line is ridiculously long
2246
if (stream.pos > 5000) {
2247
st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
2251
if (st.length != pos) {st.length = pos; changed = true;}
2252
if (pos && st[pos-2] != prevWord) changed = true;
2253
// Short lines with simple highlights return null, and are
2254
// counted as changed by the driver because they are likely to
2255
// highlight the same way in various contexts.
2256
return changed || (st.length < 5 && this.text.length < 10 ? null : false);
2258
// Fetch the parser token for a given character. Useful for hacks
2259
// that want to inspect the mode state (say, for completion).
2260
getTokenAt: function(mode, state, ch) {
2261
var txt = this.text, stream = new StringStream(txt);
2262
while (stream.pos < ch && !stream.eol()) {
2263
stream.start = stream.pos;
2264
var style = mode.token(stream, state);
2266
return {start: stream.start,
2268
string: stream.current(),
2269
className: style || null,
2272
indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
2273
// Produces an HTML fragment for the line, taking selection,
2274
// marking, and highlighting into account.
2275
getHTML: function(tabText, endAt) {
2276
var html = [], first = true;
2277
function span(text, style) {
2279
// Work around a bug where, in some compat modes, IE ignores leading spaces
2280
if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
2282
if (style) html.push('<span class="', style, '">', htmlEscape(text).replace(/\t/g, tabText), "</span>");
2283
else html.push(htmlEscape(text).replace(/\t/g, tabText));
2285
var st = this.styles, allText = this.text, marked = this.marked;
2286
var len = allText.length;
2287
if (endAt != null) len = Math.min(endAt, len);
2288
function styleToClass(style) {
2289
if (!style) return null;
2290
return "cm-" + style.replace(/ +/g, " cm-");
2293
if (!allText && endAt == null)
2295
else if (!marked || !marked.length)
2296
for (var i = 0, ch = 0; ch < len; i+=2) {
2297
var str = st[i], style = st[i+1], l = str.length;
2298
if (ch + l > len) str = str.slice(0, len - ch);
2300
span(str, styleToClass(style));
2303
var pos = 0, i = 0, text = "", style, sg = 0;
2304
var nextChange = marked[0].from || 0, marks = [], markpos = 0;
2305
function advanceMarks() {
2307
while (markpos < marked.length &&
2308
((m = marked[markpos]).from == pos || m.from == null)) {
2309
if (m.style != null) marks.push(m);
2312
nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
2313
for (var i = 0; i < marks.length; ++i) {
2314
var to = marks[i].to || Infinity;
2315
if (to == pos) marks.splice(i--, 1);
2316
else nextChange = Math.min(to, nextChange);
2321
if (nextChange == pos) advanceMarks();
2322
var upto = Math.min(len, nextChange);
2325
var end = pos + text.length;
2326
var appliedStyle = style;
2327
for (var j = 0; j < marks.length; ++j)
2328
appliedStyle = (appliedStyle ? appliedStyle + " " : "") + marks[j].style;
2329
span(end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
2330
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
2333
text = st[i++]; style = styleToClass(st[i++]);
2337
return html.join("");
2339
cleanUp: function() {
2342
for (var i = 0, e = this.marked.length; i < e; ++i) this.marked[i].detach(this);
2345
// Utility used by replace and split above
2346
function copyStyles(from, to, source, dest) {
2347
for (var i = 0, pos = 0, state = 0; pos < to; i+=2) {
2348
var part = source[i], end = pos + part.length;
2350
if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]);
2351
if (end >= from) state = 1;
2353
else if (state == 1) {
2354
if (end > to) dest.push(part.slice(0, to - pos), source[i+1]);
2355
else dest.push(part, source[i+1]);
2361
// Data structure that holds the sequence of lines.
2362
function LeafChunk(lines) {
2365
for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
2366
lines[i].parent = this;
2367
height += lines[i].height;
2369
this.height = height;
2371
LeafChunk.prototype = {
2372
chunkSize: function() { return this.lines.length; },
2373
remove: function(at, n, callbacks) {
2374
for (var i = at, e = at + n; i < e; ++i) {
2375
var line = this.lines[i];
2376
this.height -= line.height;
2379
for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
2381
this.lines.splice(at, n);
2383
collapse: function(lines) {
2384
lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
2386
insertHeight: function(at, lines, height) {
2387
this.height += height;
2388
this.lines.splice.apply(this.lines, [at, 0].concat(lines));
2389
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
2391
iterN: function(at, n, op) {
2392
for (var e = at + n; at < e; ++at)
2393
if (op(this.lines[at])) return true;
2396
function BranchChunk(children) {
2397
this.children = children;
2398
var size = 0, height = 0;
2399
for (var i = 0, e = children.length; i < e; ++i) {
2400
var ch = children[i];
2401
size += ch.chunkSize(); height += ch.height;
2405
this.height = height;
2408
BranchChunk.prototype = {
2409
chunkSize: function() { return this.size; },
2410
remove: function(at, n, callbacks) {
2412
for (var i = 0; i < this.children.length; ++i) {
2413
var child = this.children[i], sz = child.chunkSize();
2415
var rm = Math.min(n, sz - at), oldHeight = child.height;
2416
child.remove(at, rm, callbacks);
2417
this.height -= oldHeight - child.height;
2418
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
2419
if ((n -= rm) == 0) break;
2423
if (this.size - n < 25) {
2425
this.collapse(lines);
2426
this.children = [new LeafChunk(lines)];
2427
this.children[0].parent = this;
2430
collapse: function(lines) {
2431
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
2433
insert: function(at, lines) {
2435
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
2436
this.insertHeight(at, lines, height);
2438
insertHeight: function(at, lines, height) {
2439
this.size += lines.length;
2440
this.height += height;
2441
for (var i = 0, e = this.children.length; i < e; ++i) {
2442
var child = this.children[i], sz = child.chunkSize();
2444
child.insertHeight(at, lines, height);
2445
if (child.lines && child.lines.length > 50) {
2446
while (child.lines.length > 50) {
2447
var spilled = child.lines.splice(child.lines.length - 25, 25);
2448
var newleaf = new LeafChunk(spilled);
2449
child.height -= newleaf.height;
2450
this.children.splice(i + 1, 0, newleaf);
2451
newleaf.parent = this;
2460
maybeSpill: function() {
2461
if (this.children.length <= 10) return;
2464
var spilled = me.children.splice(me.children.length - 5, 5);
2465
var sibling = new BranchChunk(spilled);
2466
if (!me.parent) { // Become the parent node
2467
var copy = new BranchChunk(me.children);
2469
me.children = [copy, sibling];
2472
me.size -= sibling.size;
2473
me.height -= sibling.height;
2474
var myIndex = indexOf(me.parent.children, me);
2475
me.parent.children.splice(myIndex + 1, 0, sibling);
2477
sibling.parent = me.parent;
2478
} while (me.children.length > 10);
2479
me.parent.maybeSpill();
2481
iter: function(from, to, op) { this.iterN(from, to - from, op); },
2482
iterN: function(at, n, op) {
2483
for (var i = 0, e = this.children.length; i < e; ++i) {
2484
var child = this.children[i], sz = child.chunkSize();
2486
var used = Math.min(n, sz - at);
2487
if (child.iterN(at, used, op)) return true;
2488
if ((n -= used) == 0) break;
2495
function getLineAt(chunk, n) {
2496
while (!chunk.lines) {
2497
for (var i = 0;; ++i) {
2498
var child = chunk.children[i], sz = child.chunkSize();
2499
if (n < sz) { chunk = child; break; }
2503
return chunk.lines[n];
2505
function lineNo(line) {
2506
if (line.parent == null) return null;
2507
var cur = line.parent, no = indexOf(cur.lines, line);
2508
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
2509
for (var i = 0, e = chunk.children.length; ; ++i) {
2510
if (chunk.children[i] == cur) break;
2511
no += chunk.children[i].chunkSize();
2516
function lineAtHeight(chunk, h) {
2519
for (var i = 0, e = chunk.children.length; i < e; ++i) {
2520
var child = chunk.children[i], ch = child.height;
2521
if (h < ch) { chunk = child; continue outer; }
2523
n += child.chunkSize();
2526
} while (!chunk.lines);
2527
for (var i = 0, e = chunk.lines.length; i < e; ++i) {
2528
var line = chunk.lines[i], lh = line.height;
2534
function heightAtLine(chunk, n) {
2537
for (var i = 0, e = chunk.children.length; i < e; ++i) {
2538
var child = chunk.children[i], sz = child.chunkSize();
2539
if (n < sz) { chunk = child; continue outer; }
2544
} while (!chunk.lines);
2545
for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
2549
// The history object 'chunks' changes that are made close together
2550
// and at almost the same time into bigger undoable units.
2551
function History() {
2553
this.done = []; this.undone = [];
2555
History.prototype = {
2556
addChange: function(start, added, old) {
2557
this.undone.length = 0;
2558
var time = +new Date, cur = this.done[this.done.length - 1], last = cur && cur[cur.length - 1];
2559
var dtime = time - this.time;
2560
if (dtime > 400 || !last) {
2561
this.done.push([{start: start, added: added, old: old}]);
2562
} else if (last.start > start + added || last.start + last.added < start - last.added + last.old.length) {
2563
cur.push({start: start, added: added, old: old});
2566
if (start < last.start) {
2567
for (var i = last.start - start - 1; i >= 0; --i)
2568
last.old.unshift(old[i]);
2569
last.added += last.start - start;
2572
else if (last.start < start) {
2573
oldoff = start - last.start;
2576
for (var i = last.added - oldoff, e = old.length; i < e; ++i)
2577
last.old.push(old[i]);
2578
if (last.added < added) last.added = added;
2584
function stopMethod() {e_stop(this);}
2585
// Ensure an event has a stop method.
2586
function addStop(event) {
2587
if (!event.stop) event.stop = stopMethod;
2591
function e_preventDefault(e) {
2592
if (e.preventDefault) e.preventDefault();
2593
else e.returnValue = false;
2595
function e_stopPropagation(e) {
2596
if (e.stopPropagation) e.stopPropagation();
2597
else e.cancelBubble = true;
2599
function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
2600
CodeMirror.e_stop = e_stop;
2601
CodeMirror.e_preventDefault = e_preventDefault;
2602
CodeMirror.e_stopPropagation = e_stopPropagation;
2604
function e_target(e) {return e.target || e.srcElement;}
2605
function e_button(e) {
2606
if (e.which) return e.which;
2607
else if (e.button & 1) return 1;
2608
else if (e.button & 2) return 3;
2609
else if (e.button & 4) return 2;
2612
// Allow 3rd-party code to override event properties by adding an override
2613
// object to an event object.
2614
function e_prop(e, prop) {
2615
var overridden = e.override && e.override.hasOwnProperty(prop);
2616
return overridden ? e.override[prop] : e[prop];
2619
// Event handler registration. If disconnect is true, it'll return a
2620
// function that unregisters the handler.
2621
function connect(node, type, handler, disconnect) {
2622
if (typeof node.addEventListener == "function") {
2623
node.addEventListener(type, handler, false);
2624
if (disconnect) return function() {node.removeEventListener(type, handler, false);};
2627
var wrapHandler = function(event) {handler(event || window.event);};
2628
node.attachEvent("on" + type, wrapHandler);
2629
if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
2632
CodeMirror.connect = connect;
2634
function Delayed() {this.id = null;}
2635
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
2637
// Detect drag-and-drop
2638
var dragAndDrop = function() {
2639
// IE8 has ondragstart and ondrop properties, but doesn't seem to
2640
// actually support ondragstart the way it's supposed to work.
2641
if (/MSIE [1-8]\b/.test(navigator.userAgent)) return false;
2642
var div = document.createElement('div');
2643
return "draggable" in div;
2646
var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
2647
var ie = /MSIE \d/.test(navigator.userAgent);
2648
var webkit = /WebKit\//.test(navigator.userAgent);
2651
// Feature-detect whether newlines in textareas are converted to \r\n
2653
var te = document.createElement("textarea");
2654
te.value = "foo\nbar";
2655
if (te.value.indexOf("\r") > -1) lineSep = "\r\n";
2658
// Counts the column offset in a string, taking tabs into account.
2659
// Used mostly to find indentation.
2660
function countColumn(string, end, tabSize) {
2662
end = string.search(/[^\s\u00a0]/);
2663
if (end == -1) end = string.length;
2665
for (var i = 0, n = 0; i < end; ++i) {
2666
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
2672
function computedStyle(elt) {
2673
if (elt.currentStyle) return elt.currentStyle;
2674
return window.getComputedStyle(elt, null);
2677
// Find the position of an element by following the offsetParent chain.
2678
// If screen==true, it returns screen (rather than page) coordinates.
2679
function eltOffset(node, screen) {
2680
var bod = node.ownerDocument.body;
2681
var x = 0, y = 0, skipBody = false;
2682
for (var n = node; n; n = n.offsetParent) {
2683
var ol = n.offsetLeft, ot = n.offsetTop;
2684
// Firefox reports weird inverted offsets when the body has a border.
2685
if (n == bod) { x += Math.abs(ol); y += Math.abs(ot); }
2686
else { x += ol, y += ot; }
2687
if (screen && computedStyle(n).position == "fixed")
2690
var e = screen && !skipBody ? null : bod;
2691
for (var n = node.parentNode; n != e; n = n.parentNode)
2692
if (n.scrollLeft != null) { x -= n.scrollLeft; y -= n.scrollTop;}
2693
return {left: x, top: y};
2695
// Use the faster and saner getBoundingClientRect method when possible.
2696
if (document.documentElement.getBoundingClientRect != null) eltOffset = function(node, screen) {
2697
// Take the parts of bounding client rect that we are interested in so we are able to edit if need be,
2698
// since the returned value cannot be changed externally (they are kept in sync as the element moves within the page)
2699
try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; }
2700
catch(e) { box = {top: 0, left: 0}; }
2702
// Get the toplevel scroll, working around browser differences.
2703
if (window.pageYOffset == null) {
2704
var t = document.documentElement || document.body.parentNode;
2705
if (t.scrollTop == null) t = document.body;
2706
box.top += t.scrollTop; box.left += t.scrollLeft;
2708
box.top += window.pageYOffset; box.left += window.pageXOffset;
2714
// Get a node's text content.
2715
function eltText(node) {
2716
return node.textContent || node.innerText || node.nodeValue || "";
2718
function selectInput(node) {
2719
if (ios) { // Mobile Safari apparently has a bug where select() is broken.
2720
node.selectionStart = 0;
2721
node.selectionEnd = node.value.length;
2722
} else node.select();
2725
// Operations on {line, ch} objects.
2726
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
2727
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
2728
function copyPos(x) {return {line: x.line, ch: x.ch};}
2730
var escapeElement = document.createElement("pre");
2731
function htmlEscape(str) {
2732
escapeElement.textContent = str;
2733
return escapeElement.innerHTML;
2735
// Recent (late 2011) Opera betas insert bogus newlines at the start
2736
// of the textContent, so we strip those.
2737
if (htmlEscape("a") == "\na")
2738
htmlEscape = function(str) {
2739
escapeElement.textContent = str;
2740
return escapeElement.innerHTML.slice(1);
2742
// Some IEs don't preserve tabs through innerHTML
2743
else if (htmlEscape("\t") != "\t")
2744
htmlEscape = function(str) {
2745
escapeElement.innerHTML = "";
2746
escapeElement.appendChild(document.createTextNode(str));
2747
return escapeElement.innerHTML;
2749
CodeMirror.htmlEscape = htmlEscape;
2751
// Used to position the cursor after an undo/redo by finding the
2752
// last edited character.
2753
function editEnd(from, to) {
2755
if (!from) return to.length;
2756
for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
2757
if (from.charAt(i) != to.charAt(j)) break;
2761
function indexOf(collection, elt) {
2762
if (collection.indexOf) return collection.indexOf(elt);
2763
for (var i = 0, e = collection.length; i < e; ++i)
2764
if (collection[i] == elt) return i;
2767
function isWordChar(ch) {
2768
return /\w/.test(ch) || ch.toUpperCase() != ch.toLowerCase();
2771
// See if "".split is the broken IE version, if so, provide an
2772
// alternative way to split lines.
2773
var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
2774
var pos = 0, nl, result = [];
2775
while ((nl = string.indexOf("\n", pos)) > -1) {
2776
result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl));
2779
result.push(string.slice(pos));
2781
} : function(string){return string.split(/\r?\n/);};
2782
CodeMirror.splitLines = splitLines;
2784
var hasSelection = window.getSelection ? function(te) {
2785
try { return te.selectionStart != te.selectionEnd; }
2786
catch(e) { return false; }
2788
try {var range = te.ownerDocument.selection.createRange();}
2790
if (!range || range.parentElement() != te) return false;
2791
return range.compareEndPoints("StartToEnd", range) != 0;
2794
CodeMirror.defineMode("null", function() {
2795
return {token: function(stream) {stream.skipToEnd();}};
2797
CodeMirror.defineMIME("text/plain", "null");
2799
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
2800
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
2801
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
2802
46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 186: ";", 187: "=", 188: ",",
2803
189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 63276: "PageUp",
2804
63277: "PageDown", 63275: "End", 63273: "Home", 63234: "Left", 63232: "Up", 63235: "Right",
2805
63233: "Down", 63302: "Insert", 63272: "Delete"};
2806
CodeMirror.keyNames = keyNames;
2809
for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
2811
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
2813
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
added
removed
web/home_static/nih-cloud-apr2012/NIHCloudDemo_Fast_files/codemirror.js
