/**
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
function OUTER(gscope) {
var DEBUG=true;//$$ build script replaces the string "var DEBUG=true;//$$" with "var DEBUG=false;"
var isSetUp = false;
var THE_TAB = ' ';//4
var MAX_LIST_LEVEL = 8;
var LINE_NUMBER_PADDING_RIGHT = 4;
var LINE_NUMBER_PADDING_LEFT = 4;
var MIN_LINEDIV_WIDTH = 20;
var EDIT_BODY_PADDING_TOP = 8;
var EDIT_BODY_PADDING_LEFT = 8;
var caughtErrors = [];
var thisAuthor = '';
var disposed = false;
var editorInfo = parent.editorInfo;
var iframe = window.frameElement;
var outerWin = iframe.ace_outerWin;
iframe.ace_outerWin = null; // prevent IE 6 memory leak
var sideDiv = iframe.nextSibling;
var lineMetricsDiv = sideDiv.nextSibling;
var overlaysdiv = lineMetricsDiv.nextSibling;
initLineNumbers();
var outsideKeyDown = function(evt) {};
var outsideKeyPress = function(evt) { return true; };
var outsideNotifyDirty = function() {};
// selFocusAtStart -- determines whether the selection extends "backwards", so that the focus
// point (controlled with the arrow keys) is at the beginning; not supported in IE, though
// native IE selections have that behavior (which we try not to interfere with).
// Must be false if selection is collapsed!
var rep = { lines: newSkipList(), selStart: null, selEnd: null, selFocusAtStart: false,
alltext: "", alines: [],
apool: new AttribPool() };
// lines, alltext, alines, and DOM are set up in setup()
if (undoModule.enabled) {
undoModule.apool = rep.apool;
}
var root, doc; // set in setup()
var isEditable = true;
var doesWrap = true;
var hasLineNumbers = true;
var isStyled = true;
// space around the innermost iframe element
var iframePadLeft = MIN_LINEDIV_WIDTH + LINE_NUMBER_PADDING_RIGHT + EDIT_BODY_PADDING_LEFT;
var iframePadTop = EDIT_BODY_PADDING_TOP;
var iframePadBottom = 0, iframePadRight = 0;
var console = (DEBUG && top.console);
if (! console) {
var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
"group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
console = {};
for (var i = 0; i < names.length; ++i)
console[names[i]] = function() {};
//console.error = function(str) { alert(str); };
}
var PROFILER = window.PROFILER;
if (!PROFILER) {
PROFILER = function() { return {start:noop, mark:noop, literal:noop, end:noop, cancel:noop}; };
}
function noop() {}
function identity(x) { return x; }
// "dmesg" is for displaying messages in the in-page output pane
// visible when "?djs=1" is appended to the pad URL. It generally
// remains a no-op unless djs is enabled, but we make a habit of
// only calling it in error cases or while debugging.
var dmesg = noop;
window.dmesg = noop;
var scheduler = parent;
var textFace = 'monospace';
var textSize = 12;
function textLineHeight() { return Math.round(textSize * 4/3); }
var dynamicCSS = null;
function initDynamicCSS() {
dynamicCSS = makeCSSManager("dynamicsyntax");
}
var changesetTracker = makeChangesetTracker(scheduler, rep.apool, {
withCallbacks: function(operationName, f) {
inCallStackIfNecessary(operationName, function() {
fastIncorp(1);
f({
setDocumentAttributedText: function(atext) {
setDocAText(atext);
},
applyChangesetToDocument: function(changeset, preferInsertionAfterCaret) {
var oldEventType = currentCallStack.editEvent.eventType;
currentCallStack.startNewEvent("nonundoable");
performDocumentApplyChangeset(changeset, preferInsertionAfterCaret);
currentCallStack.startNewEvent(oldEventType);
}
});
});
}
});
var authorInfos = {}; // presence of key determines if author is present in doc
function setAuthorInfo(author, info) {
if ((typeof author) != "string") {
throw new Error("setAuthorInfo: author ("+author+") is not a string");
}
if (! info) {
delete authorInfos[author];
if (dynamicCSS) {
dynamicCSS.removeSelectorStyle(getAuthorColorClassSelector(getAuthorClassName(author)));
}
}
else {
authorInfos[author] = info;
if (info.bgcolor) {
if (dynamicCSS) {
var bgcolor = info.bgcolor;
if ((typeof info.fade) == "number") {
bgcolor = fadeColor(bgcolor, info.fade);
}
dynamicCSS.selectorStyle(getAuthorColorClassSelector(
getAuthorClassName(author))).backgroundColor = bgcolor;
}
}
}
}
function getAuthorClassName(author) {
return "author-"+author.replace(/[^a-y0-9]/g, function(c) {
if (c == ".") return "-";
return 'z'+c.charCodeAt(0)+'z';
});
}
function className2Author(className) {
if (className.substring(0,7) == "author-") {
return className.substring(7).replace(/[a-y0-9]+|-|z.+?z/g, function(cc) {
if (cc == '-') return '.';
else if (cc.charAt(0) == 'z') {
return String.fromCharCode(Number(cc.slice(1,-1)));
}
else {
return cc;
}
});
}
return null;
}
function getAuthorColorClassSelector(oneClassName) {
return ".authorColors ."+oneClassName;
}
function setUpTrackingCSS() {
if (dynamicCSS) {
var backgroundHeight = lineMetricsDiv.offsetHeight;
var lineHeight = textLineHeight();
var extraBodding = 0;
var extraTodding = 0;
if (backgroundHeight < lineHeight) {
extraBodding = Math.ceil((lineHeight - backgroundHeight)/2);
extraTodding = lineHeight - backgroundHeight - extraBodding;
}
var spanStyle = dynamicCSS.selectorStyle("#innerdocbody span");
spanStyle.paddingTop = extraTodding+"px";
spanStyle.paddingBottom = extraBodding+"px";
}
}
function boldColorFromColor(lightColorCSS) {
var color = colorutils.css2triple(lightColorCSS);
// amp up the saturation to full
color = colorutils.saturate(color);
// normalize brightness based on luminosity
color = colorutils.scaleColor(color, 0, 0.5 / colorutils.luminosity(color));
return colorutils.triple2css(color);
}
function fadeColor(colorCSS, fadeFrac) {
var color = colorutils.css2triple(colorCSS);
color = colorutils.blend(color, [1,1,1], fadeFrac);
return colorutils.triple2css(color);
}
function doAlert(str) {
scheduler.setTimeout(function() { alert(str); }, 0);
}
var currentCallStack = null;
function inCallStack(type, action) {
if (disposed) return;
if (currentCallStack) {
console.error("Can't enter callstack "+type+", already in "+
currentCallStack.type);
}
var profiling = false;
function profileRest() {
profiling = true;
console.profile();
}
function newEditEvent(eventType) {
return {eventType:eventType, backset: null};
}
function submitOldEvent(evt) {
if (rep.selStart && rep.selEnd) {
var selStartChar =
rep.lines.offsetOfIndex(rep.selStart[0]) + rep.selStart[1];
var selEndChar =
rep.lines.offsetOfIndex(rep.selEnd[0]) + rep.selEnd[1];
evt.selStart = selStartChar;
evt.selEnd = selEndChar;
evt.selFocusAtStart = rep.selFocusAtStart;
}
if (undoModule.enabled) {
var undoWorked = false;
try {
if (evt.eventType == "setup" || evt.eventType == "importText" ||
evt.eventType == "setBaseText") {
undoModule.clearHistory();
}
else if (evt.eventType == "nonundoable") {
if (evt.changeset) {
undoModule.reportExternalChange(evt.changeset);
}
}
else {
undoModule.reportEvent(evt);
}
undoWorked = true;
}
finally {
if (! undoWorked) {
undoModule.enabled = false; // for safety
}
}
}
}
function startNewEvent(eventType, dontSubmitOld) {
var oldEvent = currentCallStack.editEvent;
if (! dontSubmitOld) {
submitOldEvent(oldEvent);
}
currentCallStack.editEvent = newEditEvent(eventType);
return oldEvent;
}
currentCallStack = {type: type, docTextChanged: false, selectionAffected: false,
userChangedSelection: false,
domClean: false, profileRest:profileRest,
isUserChange: false, // is this a "user change" type of call-stack
repChanged: false, editEvent: newEditEvent(type),
startNewEvent:startNewEvent};
var cleanExit = false;
var result;
try {
result = action();
//console.log("Just did action for: "+type);
cleanExit = true;
}
catch (e) {
caughtErrors.push({error: e, time: +new Date()});
dmesg(e.toString());
throw e;
}
finally {
var cs = currentCallStack;
//console.log("Finished action for: "+type);
if (cleanExit) {
submitOldEvent(cs.editEvent);
if (cs.domClean && cs.type != "setup") {
if (cs.isUserChange) {
if (cs.repChanged) parenModule.notifyChange();
else parenModule.notifyTick();
}
recolorModule.recolorLines();
if (cs.selectionAffected) {
updateBrowserSelectionFromRep();
}
if ((cs.docTextChanged || cs.userChangedSelection) && cs.type != "applyChangesToBase") {
scrollSelectionIntoView();
}
if (cs.docTextChanged && cs.type.indexOf("importText") < 0) {
outsideNotifyDirty();
}
}
}
else {
// non-clean exit
if (currentCallStack.type == "idleWorkTimer") {
idleWorkTimer.atLeast(1000);
}
}
currentCallStack = null;
if (profiling) console.profileEnd();
}
return result;
}
function inCallStackIfNecessary(type, action) {
if (! currentCallStack) {
inCallStack(type, action);
}
else {
action();
}
}
function recolorLineByKey(key) {
if (rep.lines.containsKey(key)) {
var offset = rep.lines.offsetOfKey(key);
var width = rep.lines.atKey(key).width;
recolorLinesInRange(offset, offset + width);
}
}
function getLineKeyForOffset(charOffset) {
return rep.lines.atOffset(charOffset).key;
}
var recolorModule = (function() {
var dirtyLineKeys = {};
var module = {};
module.setCharNeedsRecoloring = function(offset) {
if (offset >= rep.alltext.length) {
offset = rep.alltext.length-1;
}
dirtyLineKeys[getLineKeyForOffset(offset)] = true;
}
module.setCharRangeNeedsRecoloring = function(offset1, offset2) {
if (offset1 >= rep.alltext.length) {
offset1 = rep.alltext.length-1;
}
if (offset2 >= rep.alltext.length) {
offset2 = rep.alltext.length-1;
}
var firstEntry = rep.lines.atOffset(offset1);
var lastKey = rep.lines.atOffset(offset2).key;
dirtyLineKeys[lastKey] = true;
var entry = firstEntry;
while (entry && entry.key != lastKey) {
dirtyLineKeys[entry.key] = true;
entry = rep.lines.next(entry);
}
}
module.recolorLines = function() {
for(var k in dirtyLineKeys) {
recolorLineByKey(k);
}
dirtyLineKeys = {};
}
return module;
})();
var parenModule = (function() {
var module = {};
module.notifyTick = function() { handleFlashing(false); };
module.notifyChange = function() { handleFlashing(true); };
module.shouldNormalizeOnChar = function (c) {
if (parenFlashRep.active) {
// avoid highlight style from carrying on to typed text
return true;
}
c = String.fromCharCode(c);
return !! (bracketMap[c]);
}
var parenFlashRep = { active: false, whichChars: null, whichLineKeys: null, expireTime: null };
var bracketMap = {'(': 1, ')':-1, '[':2, ']':-2, '{':3, '}':-3};
var bracketRegex = /[{}\[\]()]/g;
function handleFlashing(docChanged) {
function getSearchRange(aroundLoc) {
var rng = getVisibleCharRange();
var d = 100; // minimum radius
var e = 3000; // maximum radius;
if (rng[0] > aroundLoc-d) rng[0] = aroundLoc-d;
if (rng[0] < aroundLoc-e) rng[0] = aroundLoc-e;
if (rng[0] < 0) rng[0] = 0;
if (rng[1] < aroundLoc+d) rng[1] = aroundLoc+d;
if (rng[1] > aroundLoc+e) rng[1] = aroundLoc+e;
if (rng[1] > rep.lines.totalWidth()) rng[1] = rep.lines.totalWidth();
return rng;
}
function findMatchingVisibleBracket(startLoc, forwards) {
var rng = getSearchRange(startLoc);
var str = rep.alltext.substring(rng[0], rng[1]);
var bstr = str.replace(bracketRegex, '('); // handy for searching
var loc = startLoc - rng[0];
var bracketState = [];
var foundParen = false;
var goodParen = false;
function nextLoc() {
if (loc < 0) return;
if (forwards) loc++; else loc--;
if (loc < 0 || loc >= str.length) loc = -1;
if (loc >= 0) {
if (forwards) loc = bstr.indexOf('(', loc);
else loc = bstr.lastIndexOf('(', loc);
}
}
while ((! foundParen) && (loc >= 0)) {
if (getCharType(loc + rng[0]) == "p") {
var b = bracketMap[str.charAt(loc)]; // -1, 1, -2, 2, -3, 3
var into = forwards;
var typ = b;
if (typ < 0) { into = ! into; typ = -typ; }
if (into) bracketState.push(typ);
else {
var recent = bracketState.pop();
if (recent != typ) {
foundParen = true; goodParen = false;
}
else if (bracketState.length == 0) {
foundParen = true; goodParen = true;
}
}
}
//console.log(bracketState.toSource());
if ((! foundParen) && (loc >= 0)) nextLoc();
}
if (! foundParen) return null;
return {chr: (loc + rng[0]), good: goodParen};
}
var r = parenFlashRep;
var charsToHighlight = null;
var linesToUnhighlight = null;
if (r.active && (docChanged || (now() > r.expireTime))) {
linesToUnhighlight = r.whichLineKeys;
r.active = false;
}
if ((! r.active) && docChanged && isCaret() && caretColumn() > 0) {
var caret = caretDocChar();
if (caret > 0 && getCharType(caret-1) == "p") {
var charBefore = rep.alltext.charAt(caret-1);
if (bracketMap[charBefore]) {
var lookForwards = (bracketMap[charBefore] > 0);
var findResult = findMatchingVisibleBracket(caret-1, lookForwards);
if (findResult) {
var mateLoc = findResult.chr;
var mateGood = findResult.good;
r.active = true;
charsToHighlight = {};
charsToHighlight[caret-1] = 'flash';
charsToHighlight[mateLoc] = (mateGood ? 'flash' : 'flashbad');
r.whichLineKeys = [];
r.whichLineKeys.push(getLineKeyForOffset(caret-1));
r.whichLineKeys.push(getLineKeyForOffset(mateLoc));
r.expireTime = now() + 4000;
newlyActive = true;
}
}
}
}
if (linesToUnhighlight) {
recolorLineByKey(linesToUnhighlight[0]);
recolorLineByKey(linesToUnhighlight[1]);
}
if (r.active && charsToHighlight) {
function f(txt, cls, next, ofst) {
var flashClass = charsToHighlight[ofst];
if (cls) {
next(txt, cls+" "+flashClass);
}
else next(txt, cls);
}
for(var c in charsToHighlight) {
recolorLinesInRange((+c), (+c)+1, null, f);
}
}
}
return module;
})();
function dispose() {
disposed = true;
if (idleWorkTimer) idleWorkTimer.never();
teardown();
}
function checkALines() {
return; // disable for speed
function error() { throw new Error("checkALines"); }
if (rep.alines.length != rep.lines.length()) {
error();
}
for(var i=0;i<rep.alines.length;i++) {
var aline = rep.alines[i];
var lineText = rep.lines.atIndex(i).text+"\n";
var lineTextLength = lineText.length;
var opIter = Changeset.opIterator(aline);
var alineLength = 0;
while (opIter.hasNext()) {
var o = opIter.next();
alineLength += o.chars;
if (opIter.hasNext()) {
if (o.lines != 0) error();
}
else {
if (o.lines != 1) error();
}
}
if (alineLength != lineTextLength) {
error();
}
}
}
function setWraps(newVal) {
doesWrap = newVal;
var dwClass = "doesWrap";
setClassPresence(root, "doesWrap", doesWrap);
scheduler.setTimeout(function() {
inCallStackIfNecessary("setWraps", function() {
fastIncorp(7);
recreateDOM();
fixView();
});
}, 0);
}
function setStyled(newVal) {
var oldVal = isStyled;
isStyled = !!newVal;
if (newVal != oldVal) {
if (! newVal) {
// clear styles
inCallStackIfNecessary("setStyled", function() {
fastIncorp(12);
var clearStyles = [];
for(var k in STYLE_ATTRIBS) {
clearStyles.push([k,'']);
}
performDocumentApplyAttributesToCharRange(0, rep.alltext.length, clearStyles);
});
}
}
}
function setTextFace(face) {
textFace = face;
root.style.fontFamily = textFace;
lineMetricsDiv.style.fontFamily = textFace;
scheduler.setTimeout(function() {
setUpTrackingCSS();
}, 0);
}
function setTextSize(size) {
textSize = size;
root.style.fontSize = textSize+"px";
root.style.lineHeight = textLineHeight()+"px";
sideDiv.style.lineHeight = textLineHeight()+"px";
lineMetricsDiv.style.fontSize = textSize+"px";
scheduler.setTimeout(function() {
setUpTrackingCSS();
}, 0);
}
function recreateDOM() {
// precond: normalized
recolorLinesInRange(0, rep.alltext.length);
}
function setEditable(newVal) {
isEditable = newVal;
// the following may fail, e.g. if iframe is hidden
if (! isEditable) {
setDesignMode(false);
}
else {
setDesignMode(true);
}
setClassPresence(root, "static", ! isEditable);
}
function enforceEditability() {
setEditable(isEditable);
}
function importText(text, undoable, dontProcess) {
var lines;
if (dontProcess) {
if (text.charAt(text.length-1) != "\n") {
throw new Error("new raw text must end with newline");
}
if (/[\r\t\xa0]/.exec(text)) {
throw new Error("new raw text must not contain CR, tab, or nbsp");
}
lines = text.substring(0, text.length-1).split('\n');
}
else {
lines = map(text.split('\n'), textify);
}
var newText = "\n";
if (lines.length > 0) {
newText = lines.join('\n')+'\n';
}
inCallStackIfNecessary("importText"+(undoable?"Undoable":""), function() {
setDocText(newText);
});
if (dontProcess && rep.alltext != text) {
throw new Error("mismatch error setting raw text in importText");
}
}
function importAText(atext, apoolJsonObj, undoable) {
atext = Changeset.cloneAText(atext);
if (apoolJsonObj) {
var wireApool = (new AttribPool()).fromJsonable(apoolJsonObj);
atext.attribs = Changeset.moveOpsToNewPool(atext.attribs, wireApool, rep.apool);
}
inCallStackIfNecessary("importText"+(undoable?"Undoable":""), function() {
setDocAText(atext);
});
}
function setDocAText(atext) {
fastIncorp(8);
var oldLen = rep.lines.totalWidth();
var numLines = rep.lines.length();
var upToLastLine = rep.lines.offsetOfIndex(numLines-1);
var lastLineLength = rep.lines.atIndex(numLines-1).text.length;
var assem = Changeset.smartOpAssembler();
var o = Changeset.newOp('-');
o.chars = upToLastLine;
o.lines = numLines-1;
assem.append(o);
o.chars = lastLineLength;
o.lines = 0;
assem.append(o);
Changeset.appendATextToAssembler(atext, assem);
var newLen = oldLen + assem.getLengthChange();
var changeset = Changeset.checkRep(
Changeset.pack(oldLen, newLen, assem.toString(),
atext.text.slice(0, -1)));
performDocumentApplyChangeset(changeset);
performSelectionChange([0,rep.lines.atIndex(0).lineMarker],
[0,rep.lines.atIndex(0).lineMarker]);
idleWorkTimer.atMost(100);
if (rep.alltext != atext.text) {
dmesg(htmlPrettyEscape(rep.alltext));
dmesg(htmlPrettyEscape(atext.text));
throw new Error("mismatch error setting raw text in setDocAText");
}
}
function setDocText(text) {
setDocAText(Changeset.makeAText(text));
}
function getDocText() {
var alltext = rep.alltext;
var len = alltext.length;
if (len > 0) len--; // final extra newline
return alltext.substring(0, len);
}
function exportText() {
if (currentCallStack && ! currentCallStack.domClean) {
inCallStackIfNecessary("exportText", function() { fastIncorp(2); });
}
return getDocText();
}
function editorChangedSize() {
fixView();
}
function setOnKeyPress(handler) {
outsideKeyPress = handler;
}
function setOnKeyDown(handler) {
outsideKeyDown = handler;
}
function setNotifyDirty(handler) {
outsideNotifyDirty = handler;
}
function getFormattedCode() {
if (currentCallStack && ! currentCallStack.domClean) {
inCallStackIfNecessary("getFormattedCode", incorporateUserChanges);
}
var buf = [];
if (rep.lines.length() > 0) {
// should be the case, even for empty file
var entry = rep.lines.atIndex(0);
while (entry) {
var domInfo = entry.domInfo;
buf.push((domInfo && domInfo.getInnerHTML()) ||
domline.processSpaces(domline.escapeHTML(entry.text),
doesWrap) ||
' ' /*empty line*/);
entry = rep.lines.next(entry);
}
}
return '<div class="syntax"><div>'+buf.join('</div>\n<div>')+
'</div></div>';
}
var CMDS = {
bold: function() { toggleAttributeOnSelection('bold'); },
italic: function() { toggleAttributeOnSelection('italic'); },
underline: function() { toggleAttributeOnSelection('underline'); },
strikethrough: function() { toggleAttributeOnSelection('strikethrough'); },
undo: function() { doUndoRedo('undo'); },
redo: function() { doUndoRedo('redo'); },
clearauthorship: function(prompt) {
if ((!(rep.selStart && rep.selEnd)) || isCaret()) {
if (prompt) {
prompt();
}
else {
performDocumentApplyAttributesToCharRange(0, rep.alltext.length,
[['author', '']]);
}
}
else {
setAttributeOnSelection('author', '');
}
},
insertunorderedlist: doInsertUnorderedList,
indent: function() {
if (! doIndentOutdent(false)) {
doInsertUnorderedList();
}
},
outdent: function() { doIndentOutdent(true); }
};
function execCommand(cmd) {
cmd = cmd.toLowerCase();
var cmdArgs = Array.prototype.slice.call(arguments, 1);
if (CMDS[cmd]) {
inCallStack(cmd, function() {
fastIncorp(9);
CMDS[cmd].apply(CMDS, cmdArgs);
});
}
}
editorInfo.ace_focus = focus;
editorInfo.ace_importText = importText;
editorInfo.ace_importAText = importAText;
editorInfo.ace_exportText = exportText;
editorInfo.ace_editorChangedSize = editorChangedSize;
editorInfo.ace_setOnKeyPress = setOnKeyPress;
editorInfo.ace_setOnKeyDown = setOnKeyDown;
editorInfo.ace_setNotifyDirty = setNotifyDirty;
editorInfo.ace_dispose = dispose;
editorInfo.ace_getFormattedCode = getFormattedCode;
editorInfo.ace_setEditable = setEditable;
editorInfo.ace_execCommand = execCommand;
editorInfo.ace_setProperty = function(key, value) {
var k = key.toLowerCase();
if (k == "wraps") {
setWraps(value);
}
else if (k == "showsauthorcolors") {
setClassPresence(root, "authorColors", !!value);
}
else if (k == "showsuserselections") {
setClassPresence(root, "userSelections", !!value);
}
else if (k == "showslinenumbers") {
hasLineNumbers = !!value;
setClassPresence(sideDiv, "sidedivhidden", ! hasLineNumbers);
fixView();
}
else if (k == "grayedout") {
setClassPresence(outerWin.document.body, "grayedout", !!value);
}
else if (k == "dmesg") {
dmesg = value;
window.dmesg = value;
}
else if (k == 'userauthor') {
thisAuthor = String(value);
}
else if (k == 'styled') {
setStyled(value);
}
else if (k == 'textface') {
setTextFace(value);
}
else if (k == 'textsize') {
setTextSize(value);
}
}
editorInfo.ace_setBaseText = function(txt) {
changesetTracker.setBaseText(txt);
};
editorInfo.ace_setBaseAttributedText = function(atxt, apoolJsonObj) {
setUpTrackingCSS();
changesetTracker.setBaseAttributedText(atxt, apoolJsonObj);
};
editorInfo.ace_applyChangesToBase = function(c, optAuthor, apoolJsonObj) {
changesetTracker.applyChangesToBase(c, optAuthor, apoolJsonObj);
};
editorInfo.ace_prepareUserChangeset = function() {
return changesetTracker.prepareUserChangeset();
};
editorInfo.ace_applyPreparedChangesetToBase = function() {
changesetTracker.applyPreparedChangesetToBase();
};
editorInfo.ace_setUserChangeNotificationCallback = function(f) {
changesetTracker.setUserChangeNotificationCallback(f);
};
editorInfo.ace_setAuthorInfo = function(author, info) {
setAuthorInfo(author, info);
};
editorInfo.ace_setAuthorSelectionRange = function(author, start, end) {
changesetTracker.setAuthorSelectionRange(author, start, end);
};
editorInfo.ace_getUnhandledErrors = function() {
return caughtErrors.slice();
};
editorInfo.ace_getDebugProperty = function(prop) {
if (prop == "debugger") {
// obfuscate "eval" so as not to scare yuicompressor
window['ev'+'al']("debugger");
}
else if (prop == "rep") {
return rep;
}
else if (prop == "window") {
return window;
}
else if (prop == "document") {
return document;
}
return undefined;
};
function now() { return (new Date()).getTime(); }
function newTimeLimit(ms) {
//console.debug("new time limit");
var startTime = now();
var lastElapsed = 0;
var exceededAlready = false;
var printedTrace = false;
var isTimeUp = function () {
if (exceededAlready) {
if ((! printedTrace)) {// && now() - startTime - ms > 300) {
//console.trace();
printedTrace = true;
}
return true;
}
var elapsed = now() - startTime;
if (elapsed > ms) {
exceededAlready = true;
//console.debug("time limit hit, before was %d/%d", lastElapsed, ms);
//console.trace();
return true;
}
else {
lastElapsed = elapsed;
return false;
}
}
isTimeUp.elapsed = function() { return now() - startTime; }
return isTimeUp;
}
function makeIdleAction(func) {
var scheduledTimeout = null;
var scheduledTime = 0;
function unschedule() {
if (scheduledTimeout) {
scheduler.clearTimeout(scheduledTimeout);
scheduledTimeout = null;
}
}
function reschedule(time) {
unschedule();
scheduledTime = time;
var delay = time - now();
if (delay < 0) delay = 0;
scheduledTimeout = scheduler.setTimeout(callback, delay);
}
function callback() {
scheduledTimeout = null;
// func may reschedule the action
func();
}
return {
atMost: function (ms) {
var latestTime = now() + ms;
if ((! scheduledTimeout) || scheduledTime > latestTime) {
reschedule(latestTime);
}
},
// atLeast(ms) will schedule the action if not scheduled yet.
// In other words, "infinity" is replaced by ms, even though
// it is technically larger.
atLeast: function (ms) {
var earliestTime = now()+ms;
if ((! scheduledTimeout) || scheduledTime < earliestTime) {
reschedule(earliestTime);
}
},
never: function() {
unschedule();
}
}
}
function fastIncorp(n) {
// normalize but don't do any lexing or anything
incorporateUserChanges(newTimeLimit(0));
}
function incorpIfQuick() {
var me = incorpIfQuick;
var failures = (me.failures || 0);
if (failures < 5) {
var isTimeUp = newTimeLimit(40);
var madeChanges = incorporateUserChanges(isTimeUp);
if (isTimeUp()) {
me.failures = failures+1;
}
return true;
}
else {
var skipCount = (me.skipCount || 0);
skipCount++;
if (skipCount == 20) {
skipCount = 0;
me.failures = 0;
}
me.skipCount = skipCount;
}
return false;
}
var idleWorkTimer = makeIdleAction(function() {
//if (! top.BEFORE) top.BEFORE = [];
//top.BEFORE.push(magicdom.root.dom.innerHTML);
if (! isEditable) return; // and don't reschedule
if (inInternationalComposition) {
// don't do idle input incorporation during international input composition
idleWorkTimer.atLeast(500);
return;
}
inCallStack("idleWorkTimer", function() {
var isTimeUp = newTimeLimit(250);
//console.time("idlework");
var finishedImportantWork = false;
var finishedWork = false;
try {
// isTimeUp() is a soft constraint for incorporateUserChanges,
// which always renormalizes the DOM, no matter how long it takes,
// but doesn't necessarily lex and highlight it
incorporateUserChanges(isTimeUp);
if (isTimeUp()) return;
updateLineNumbers(); // update line numbers if any time left
if (isTimeUp()) return;
var visibleRange = getVisibleCharRange();
var docRange = [0, rep.lines.totalWidth()];
//console.log("%o %o", docRange, visibleRange);
finishedImportantWork = true;
finishedWork = true;
}
finally {
//console.timeEnd("idlework");
if (finishedWork) {
idleWorkTimer.atMost(1000);
}
else if (finishedImportantWork) {
// if we've finished highlighting the view area,
// more highlighting could be counter-productive,
// e.g. if the user just opened a triple-quote and will soon close it.
idleWorkTimer.atMost(500);
}
else {
var timeToWait = Math.round(isTimeUp.elapsed() / 2);
if (timeToWait < 100) timeToWait = 100;
idleWorkTimer.atMost(timeToWait);
}
}
});
//if (! top.AFTER) top.AFTER = [];
//top.AFTER.push(magicdom.root.dom.innerHTML);
});
var _nextId = 1;
function uniqueId(n) {
// not actually guaranteed to be unique, e.g. if user copy-pastes
// nodes with ids
var nid = n.id;
if (nid) return nid;
return (n.id = "magicdomid"+(_nextId++));
}
function recolorLinesInRange(startChar, endChar, isTimeUp, optModFunc) {
if (endChar <= startChar) return;
if (startChar < 0 || startChar >= rep.lines.totalWidth()) return;
var lineEntry = rep.lines.atOffset(startChar); // rounds down to line boundary
var lineStart = rep.lines.offsetOfEntry(lineEntry);
var lineIndex = rep.lines.indexOfEntry(lineEntry);
var selectionNeedsResetting = false;
var firstLine = null;
var lastLine = null;
isTimeUp = (isTimeUp || noop);
// tokenFunc function; accesses current value of lineEntry and curDocChar,
// also mutates curDocChar
var curDocChar;
var tokenFunc = function(tokenText, tokenClass) {
lineEntry.domInfo.appendSpan(tokenText, tokenClass);
};
if (optModFunc) {
var f = tokenFunc;
tokenFunc = function(tokenText, tokenClass) {
optModFunc(tokenText, tokenClass, f, curDocChar);
curDocChar += tokenText.length;
};
}
while (lineEntry && lineStart < endChar && ! isTimeUp()) {
//var timer = newTimeLimit(200);
var lineEnd = lineStart + lineEntry.width;
curDocChar = lineStart;
lineEntry.domInfo.clearSpans();
getSpansForLine(lineEntry, tokenFunc, lineStart);
lineEntry.domInfo.finishUpdate();
markNodeClean(lineEntry.lineNode);
if (rep.selStart && rep.selStart[0] == lineIndex ||
rep.selEnd && rep.selEnd[0] == lineIndex) {
selectionNeedsResetting = true;
}
//if (timer()) console.dirxml(lineEntry.lineNode.dom);
if (firstLine === null) firstLine = lineIndex;
lastLine = lineIndex;
lineStart = lineEnd;
lineEntry = rep.lines.next(lineEntry);
lineIndex++;
}
if (selectionNeedsResetting) {
currentCallStack.selectionAffected = true;
}
//console.debug("Recolored line range %d-%d", firstLine, lastLine);
}
// like getSpansForRange, but for a line, and the func takes (text,class)
// instead of (width,class); excludes the trailing '\n' from
// consideration by func
function getSpansForLine(lineEntry, textAndClassFunc, lineEntryOffsetHint) {
var lineEntryOffset = lineEntryOffsetHint;
if ((typeof lineEntryOffset) != "number") {
lineEntryOffset = rep.lines.offsetOfEntry(lineEntry);
}
var text = lineEntry.text;
var width = lineEntry.width; // text.length+1
if (text.length == 0) {
// allow getLineStyleFilter to set line-div styles
var func = linestylefilter.getLineStyleFilter(
0, '', textAndClassFunc, rep.apool);
func('', '');
}
else {
var offsetIntoLine = 0;
var filteredFunc = linestylefilter.getFilterStack(text, textAndClassFunc, browser);
var lineNum = rep.lines.indexOfEntry(lineEntry);
var aline = rep.alines[lineNum];
filteredFunc = linestylefilter.getLineStyleFilter(
text.length, aline, filteredFunc, rep.apool);
filteredFunc(text, '');
}
}
function getCharType(charIndex) {
return '';
}
var observedChanges;
function clearObservedChanges() {
observedChanges = { cleanNodesNearChanges: {} };
}
clearObservedChanges();
function getCleanNodeByKey(key) {
var p = PROFILER("getCleanNodeByKey", false);
p.extra = 0;
var n = doc.getElementById(key);
// copying and pasting can lead to duplicate ids
while (n && isNodeDirty(n)) {
p.extra++;
n.id = "";
n = doc.getElementById(key);
}
p.literal(p.extra, "extra");
p.end();
return n;
}
function observeChangesAroundNode(node) {
// Around this top-level DOM node, look for changes to the document
// (from how it looks in our representation) and record them in a way
// that can be used to "normalize" the document (apply the changes to our
// representation, and put the DOM in a canonical form).
//top.console.log("observeChangesAroundNode(%o)", node);
var cleanNode;
var hasAdjacentDirtyness;
if (! isNodeDirty(node)) {
cleanNode = node;
var prevSib = cleanNode.previousSibling;
var nextSib = cleanNode.nextSibling;
hasAdjacentDirtyness = ((prevSib && isNodeDirty(prevSib))
|| (nextSib && isNodeDirty(nextSib)));
}
else {
// node is dirty, look for clean node above
var upNode = node.previousSibling;
while (upNode && isNodeDirty(upNode)) {
upNode = upNode.previousSibling;
}
if (upNode) {
cleanNode = upNode;
}
else {
var downNode = node.nextSibling;
while (downNode && isNodeDirty(downNode)) {
downNode = downNode.nextSibling;
}
if (downNode) {
cleanNode = downNode;
}
}
if (! cleanNode) {
// Couldn't find any adjacent clean nodes!
// Since top and bottom of doc is dirty, the dirty area will be detected.
return;
}
hasAdjacentDirtyness = true;
}
if (hasAdjacentDirtyness) {
// previous or next line is dirty
observedChanges.cleanNodesNearChanges['$'+uniqueId(cleanNode)] = true;
}
else {
// next and prev lines are clean (if they exist)
var lineKey = uniqueId(cleanNode);
var prevSib = cleanNode.previousSibling;
var nextSib = cleanNode.nextSibling;
var actualPrevKey = ((prevSib && uniqueId(prevSib)) || null);
var actualNextKey = ((nextSib && uniqueId(nextSib)) || null);
var repPrevEntry = rep.lines.prev(rep.lines.atKey(lineKey));
var repNextEntry = rep.lines.next(rep.lines.atKey(lineKey));
var repPrevKey = ((repPrevEntry && repPrevEntry.key) || null);
var repNextKey = ((repNextEntry && repNextEntry.key) || null);
if (actualPrevKey != repPrevKey || actualNextKey != repNextKey) {
observedChanges.cleanNodesNearChanges['$'+uniqueId(cleanNode)] = true;
}
}
}
function observeChangesAroundSelection() {
if (currentCallStack.observedSelection) return;
currentCallStack.observedSelection = true;
var p = PROFILER("getSelection", false);
var selection = getSelection();
p.end();
if (selection) {
function topLevel(n) {
if ((!n) || n == root) return null;
while (n.parentNode != root) {
n = n.parentNode;
}
return n;
}
var node1 = topLevel(selection.startPoint.node);
var node2 = topLevel(selection.endPoint.node);
if (node1) observeChangesAroundNode(node1);
if (node2 && node1 != node2) {
observeChangesAroundNode(node2);
}
}
}
function observeSuspiciousNodes() {
// inspired by Firefox bug #473255, where pasting formatted text
// causes the cursor to jump away, making the new HTML never found.
if (root.getElementsByTagName) {
var nds = root.getElementsByTagName("style");
for(var i=0;i<nds.length;i++) {
var n = nds[i];
while (n.parentNode && n.parentNode != root) {
n = n.parentNode;
}
if (n.parentNode == root) {
observeChangesAroundNode(n);
}
}
}
}
function incorporateUserChanges(isTimeUp) {
if (currentCallStack.domClean) return false;
inInternationalComposition = false; // if we need the document normalized, so be it
currentCallStack.isUserChange = true;
isTimeUp = (isTimeUp || function() { return false; });
if (DEBUG && top.DONT_INCORP || window.DEBUG_DONT_INCORP) return false;
var p = PROFILER("incorp", false);
//if (doc.body.innerHTML.indexOf("AppJet") >= 0)
//dmesg(htmlPrettyEscape(doc.body.innerHTML));
//if (top.RECORD) top.RECORD.push(doc.body.innerHTML);
// returns true if dom changes were made
if (! root.firstChild) {
root.innerHTML = "<div><!-- --></div>";
}
p.mark("obs");
observeChangesAroundSelection();
observeSuspiciousNodes();
p.mark("dirty");
var dirtyRanges = getDirtyRanges();
//console.log("dirtyRanges: "+toSource(dirtyRanges));
var dirtyRangesCheckOut = true;
var j = 0;
var a,b;
while (j < dirtyRanges.length) {
a = dirtyRanges[j][0];
b = dirtyRanges[j][1];
if (! ((a == 0 || getCleanNodeByKey(rep.lines.atIndex(a-1).key)) &&
(b == rep.lines.length() || getCleanNodeByKey(rep.lines.atIndex(b).key)))) {
dirtyRangesCheckOut = false;
break;
}
j++;
}
if (! dirtyRangesCheckOut) {
var numBodyNodes = root.childNodes.length;
for(var k=0;k<numBodyNodes;k++) {
var bodyNode = root.childNodes.item(k);
if ((bodyNode.tagName) && ((! bodyNode.id) || (! rep.lines.containsKey(bodyNode.id)))) {
observeChangesAroundNode(bodyNode);
}
}
dirtyRanges = getDirtyRanges();
}
clearObservedChanges();
p.mark("getsel");
var selection = getSelection();
//console.log(magicdom.root.dom.innerHTML);
//console.log("got selection: %o", selection);
var selStart, selEnd; // each one, if truthy, has [line,char] needed to set selection
var i = 0;
var splicesToDo = [];
var netNumLinesChangeSoFar = 0;
var toDeleteAtEnd = [];
p.mark("ranges");
p.literal(dirtyRanges.length, "numdirt");
var domInsertsNeeded = []; // each entry is [nodeToInsertAfter, [info1, info2, ...]]
while (i < dirtyRanges.length) {
var range = dirtyRanges[i];
a = range[0];
b = range[1];
var firstDirtyNode = (((a == 0) && root.firstChild) ||
getCleanNodeByKey(rep.lines.atIndex(a-1).key).nextSibling);
firstDirtyNode = (firstDirtyNode && isNodeDirty(firstDirtyNode) && firstDirtyNode);
var lastDirtyNode = (((b == rep.lines.length()) && root.lastChild) ||
getCleanNodeByKey(rep.lines.atIndex(b).key).previousSibling);
lastDirtyNode = (lastDirtyNode && isNodeDirty(lastDirtyNode) && lastDirtyNode);
if (firstDirtyNode && lastDirtyNode) {
var cc = makeContentCollector(isStyled, browser, rep.apool, null,
className2Author);
cc.notifySelection(selection);
var dirtyNodes = [];
for(var n = firstDirtyNode; n && ! (n.previousSibling &&
n.previousSibling == lastDirtyNode);
n = n.nextSibling) {
if (browser.msie) {
// try to undo IE's pesky and overzealous linkification
try { n.createTextRange().execCommand("unlink", false, null); }
catch (e) {}
}
cc.collectContent(n);
dirtyNodes.push(n);
}
cc.notifyNextNode(lastDirtyNode.nextSibling);
var lines = cc.getLines();
if ((lines.length <= 1 || lines[lines.length-1] !== "")
&& lastDirtyNode.nextSibling) {
// dirty region doesn't currently end a line, even taking the following node
// (or lack of node) into account, so include the following clean node.
// It could be SPAN or a DIV; basically this is any case where the contentCollector
// decides it isn't done.
// Note that this clean node might need to be there for the next dirty range.
//console.log("inclusive of "+lastDirtyNode.next().dom.tagName);
b++;
var cleanLine = lastDirtyNode.nextSibling;
cc.collectContent(cleanLine);
toDeleteAtEnd.push(cleanLine);
cc.notifyNextNode(cleanLine.nextSibling);
}
var ccData = cc.finish();
var ss = ccData.selStart;
var se = ccData.selEnd;
lines = ccData.lines;
var lineAttribs = ccData.lineAttribs;
var linesWrapped = ccData.linesWrapped;
if (linesWrapped > 0) {
doAlert("Editor warning: "+linesWrapped+" long line"+
(linesWrapped == 1 ? " was" : "s were")+" hard-wrapped into "+
ccData.numLinesAfter
+" lines.");
}
if (ss[0] >= 0) selStart = [ss[0]+a+netNumLinesChangeSoFar, ss[1]];
if (se[0] >= 0) selEnd = [se[0]+a+netNumLinesChangeSoFar, se[1]];
/*var oldLines = rep.alltext.substring(rep.lines.offsetOfIndex(a),
rep.lines.offsetOfIndex(b));
var newLines = lines.join('\n')+'\n';
dmesg("OLD: "+htmlPrettyEscape(oldLines));
dmesg("NEW: "+htmlPrettyEscape(newLines));*/
var entries = [];
var nodeToAddAfter = lastDirtyNode;
var lineNodeInfos = new Array(lines.length);
for(var k=0;k<lines.length;k++) {
var lineString = lines[k];
var newEntry = createDomLineEntry(lineString);
entries.push(newEntry);
lineNodeInfos[k] = newEntry.domInfo;
}
//var fragment = magicdom.wrapDom(document.createDocumentFragment());
domInsertsNeeded.push([nodeToAddAfter, lineNodeInfos]);
forEach(dirtyNodes, function (n) { toDeleteAtEnd.push(n); });
var spliceHints = {};
if (selStart) spliceHints.selStart = selStart;
if (selEnd) spliceHints.selEnd = selEnd;
splicesToDo.push([a+netNumLinesChangeSoFar, b-a, entries, lineAttribs, spliceHints]);
netNumLinesChangeSoFar += (lines.length - (b-a));
}
else if (b > a) {
splicesToDo.push([a+netNumLinesChangeSoFar, b-a, [], []]);
}
i++;
}
var domChanges = (splicesToDo.length > 0);
// update the representation
p.mark("splice");
forEach(splicesToDo, function (splice) {
doIncorpLineSplice(splice[0], splice[1], splice[2], splice[3], splice[4]);
});
//p.mark("relex");
//rep.lexer.lexCharRange(getVisibleCharRange(), function() { return false; });
//var isTimeUp = newTimeLimit(100);
// do DOM inserts
p.mark("insert");
forEach(domInsertsNeeded, function (ins) {
insertDomLines(ins[0], ins[1], isTimeUp);
});
p.mark("del");
// delete old dom nodes
forEach(toDeleteAtEnd, function (n) {
//var id = n.uniqueId();
// parent of n may not be "root" in IE due to non-tree-shaped DOM (wtf)
n.parentNode.removeChild(n);
//dmesg(htmlPrettyEscape(htmlForRemovedChild(n)));
//console.log("removed: "+id);
});
p.mark("findsel");
// if the nodes that define the selection weren't encountered during
// content collection, figure out where those nodes are now.
if (selection && !selStart) {
//if (domChanges) dmesg("selection not collected");
selStart = getLineAndCharForPoint(selection.startPoint);
}
if (selection && !selEnd) {
selEnd = getLineAndCharForPoint(selection.endPoint);
}
// selection from content collection can, in various ways, extend past final
// BR in firefox DOM, so cap the line
var numLines = rep.lines.length();
if (selStart && selStart[0] >= numLines) {
selStart[0] = numLines-1;
selStart[1] = rep.lines.atIndex(selStart[0]).text.length;
}
if (selEnd && selEnd[0] >= numLines) {
selEnd[0] = numLines-1;
selEnd[1] = rep.lines.atIndex(selEnd[0]).text.length;
}
p.mark("repsel");
// update rep
repSelectionChange(selStart, selEnd, selection && selection.focusAtStart);
// update browser selection
p.mark("browsel");
if (selection && (domChanges || isCaret())) {
// if no DOM changes (not this case), want to treat range selection delicately,
// e.g. in IE not lose which end of the selection is the focus/anchor;
// on the other hand, we may have just noticed a press of PageUp/PageDown
currentCallStack.selectionAffected = true;
}
currentCallStack.domClean = true;
p.mark("fixview");
fixView();
p.end("END");
return domChanges;
}
function htmlForRemovedChild(n) {
var div = doc.createElement("DIV");
div.appendChild(n);
return div.innerHTML;
}
var STYLE_ATTRIBS = {bold: true, italic: true, underline: true,
strikethrough: true, list: true};
var OTHER_INCORPED_ATTRIBS = {insertorder: true, author: true};
function isStyleAttribute(aname) {
return !! STYLE_ATTRIBS[aname];
}
function isIncorpedAttribute(aname) {
return (!! STYLE_ATTRIBS[aname]) || (!! OTHER_INCORPED_ATTRIBS[aname]);
}
function insertDomLines(nodeToAddAfter, infoStructs, isTimeUp) {
isTimeUp = (isTimeUp || function() { return false; });
var lastEntry;
var lineStartOffset;
if (infoStructs.length < 1) return;
var startEntry = rep.lines.atKey(uniqueId(infoStructs[0].node));
var endEntry = rep.lines.atKey(uniqueId(infoStructs[infoStructs.length-1].node));
var charStart = rep.lines.offsetOfEntry(startEntry);
var charEnd = rep.lines.offsetOfEntry(endEntry) + endEntry.width;
//rep.lexer.lexCharRange([charStart, charEnd], isTimeUp);
forEach(infoStructs, function (info) {
var p2 = PROFILER("insertLine", false);
var node = info.node;
var key = uniqueId(node);
var entry;
p2.mark("findEntry");
if (lastEntry) {
// optimization to avoid recalculation
var next = rep.lines.next(lastEntry);
if (next && next.key == key) {
entry = next;
lineStartOffset += lastEntry.width;
}
}
if (! entry) {
p2.literal(1, "nonopt");
entry = rep.lines.atKey(key);
lineStartOffset = rep.lines.offsetOfKey(key);
}
else p2.literal(0, "nonopt");
lastEntry = entry;
p2.mark("spans");
getSpansForLine(entry, function (tokenText, tokenClass) {
info.appendSpan(tokenText, tokenClass);
}, lineStartOffset, isTimeUp());
//else if (entry.text.length > 0) {
//info.appendSpan(entry.text, 'dirty');
//}
p2.mark("addLine");
info.prepareForAdd();
entry.lineMarker = info.lineMarker;
if (! nodeToAddAfter) {
root.insertBefore(node, root.firstChild);
}
else {
root.insertBefore(node, nodeToAddAfter.nextSibling);
}
nodeToAddAfter = node;
info.notifyAdded();
p2.mark("markClean");
markNodeClean(node);
p2.end();
});
}
function isCaret() {
return (rep.selStart && rep.selEnd && rep.selStart[0] == rep.selEnd[0] &&
rep.selStart[1] == rep.selEnd[1]);
}
// prereq: isCaret()
function caretLine() { return rep.selStart[0]; }
function caretColumn() { return rep.selStart[1]; }
function caretDocChar() {
return rep.lines.offsetOfIndex(caretLine()) + caretColumn();
}
function handleReturnIndentation() {
// on return, indent to level of previous line
if (isCaret() && caretColumn() == 0 && caretLine() > 0) {
var lineNum = caretLine();
var thisLine = rep.lines.atIndex(lineNum);
var prevLine = rep.lines.prev(thisLine);
var prevLineText = prevLine.text;
var theIndent = /^ *(?:)/.exec(prevLineText)[0];
if (/[\[\(\{]\s*$/.exec(prevLineText)) theIndent += THE_TAB;
var cs = Changeset.builder(rep.lines.totalWidth()).keep(
rep.lines.offsetOfIndex(lineNum), lineNum).insert(
theIndent, [['author',thisAuthor]], rep.apool).toString();
performDocumentApplyChangeset(cs);
performSelectionChange([lineNum, theIndent.length], [lineNum, theIndent.length]);
}
}
function setupMozillaCaretHack(lineNum) {
// This is really ugly, but by god, it works!
// Fixes annoying Firefox caret artifact (observed in 2.0.0.12
// and unfixed in Firefox 2 as of now) where mutating the DOM
// and then moving the caret to the beginning of a line causes
// an image of the caret to be XORed at the top of the iframe.
// The previous solution involved remembering to set the selection
// later, in response to the next event in the queue, which was hugely
// annoying.
// This solution: add a space character (0x20) to the beginning of the line.
// After setting the selection, remove the space.
var lineNode = rep.lines.atIndex(lineNum).lineNode;
var fc = lineNode.firstChild;
while (isBlockElement(fc) && fc.firstChild) {
fc = fc.firstChild;
}
var textNode;
if (isNodeText(fc)) {
fc.nodeValue = " "+fc.nodeValue;
textNode = fc;
}
else {
textNode = doc.createTextNode(" ");
fc.parentNode.insertBefore(textNode, fc);
}
markNodeClean(lineNode);
return { unhack: function() {
if (textNode.nodeValue == " ") {
textNode.parentNode.removeChild(textNode);
}
else {
textNode.nodeValue = textNode.nodeValue.substring(1);
}
markNodeClean(lineNode);
} };
}
function getPointForLineAndChar(lineAndChar) {
var line = lineAndChar[0];
var charsLeft = lineAndChar[1];
//console.log("line: %d, key: %s, node: %o", line, rep.lines.atIndex(line).key,
//getCleanNodeByKey(rep.lines.atIndex(line).key));
var lineEntry = rep.lines.atIndex(line);
charsLeft -= lineEntry.lineMarker;
if (charsLeft < 0) {
charsLeft = 0;
}
var lineNode = lineEntry.lineNode;
var n = lineNode;
var after = false;
if (charsLeft == 0) {
var index = 0;
if (browser.msie && line == (rep.lines.length()-1) && lineNode.childNodes.length == 0) {
// best to stay at end of last empty div in IE
index = 1;
}
return {node: lineNode, index:index, maxIndex:1};
}
while (!(n == lineNode && after)) {
if (after) {
if (n.nextSibling) {
n = n.nextSibling;
after = false;
}
else n = n.parentNode;
}
else {
if (isNodeText(n)) {
var len = n.nodeValue.length;
if (charsLeft <= len) {
return {node: n, index:charsLeft, maxIndex:len};
}
charsLeft -= len;
after = true;
}
else {
if (n.firstChild) n = n.firstChild;
else after = true;
}
}
}
return {node: lineNode, index:1, maxIndex:1};
}
function nodeText(n) {
return n.innerText || n.textContent || n.nodeValue || '';
}
function getLineAndCharForPoint(point) {
// Turn DOM node selection into [line,char] selection.
// This method has to work when the DOM is not pristine,
// assuming the point is not in a dirty node.
if (point.node == root) {
if (point.index == 0) {
return [0, 0];
}
else {
var N = rep.lines.length();
var ln = rep.lines.atIndex(N-1);
return [N-1, ln.text.length];
}
}
else {
var n = point.node;
var col = 0;
// if this part fails, it probably means the selection node
// was dirty, and we didn't see it when collecting dirty nodes.
if (isNodeText(n)) {
col = point.index;
}
else if (point.index > 0) {
col = nodeText(n).length;
}
var parNode, prevSib;
while ((parNode = n.parentNode) != root) {
if ((prevSib = n.previousSibling)) {
n = prevSib;
col += nodeText(n).length;
}
else {
n = parNode;
}
}
if (n.id == "") console.debug("BAD");
if (n.firstChild && isBlockElement(n.firstChild)) {
col += 1; // lineMarker
}
var lineEntry = rep.lines.atKey(n.id);
var lineNum = rep.lines.indexOfEntry(lineEntry);
return [lineNum, col];
}
}
function createDomLineEntry(lineString) {
var info = doCreateDomLine(lineString.length > 0);
var newNode = info.node;
return {key: uniqueId(newNode), text: lineString, lineNode: newNode,
domInfo: info, lineMarker: 0};
}
function canApplyChangesetToDocument(changes) {
return Changeset.oldLen(changes) == rep.alltext.length;
}
function performDocumentApplyChangeset(changes, insertsAfterSelection) {
doRepApplyChangeset(changes, insertsAfterSelection);
var requiredSelectionSetting = null;
if (rep.selStart && rep.selEnd) {
var selStartChar = rep.lines.offsetOfIndex(rep.selStart[0]) + rep.selStart[1];
var selEndChar = rep.lines.offsetOfIndex(rep.selEnd[0]) + rep.selEnd[1];
var result = Changeset.characterRangeFollow(changes, selStartChar, selEndChar,
insertsAfterSelection);
requiredSelectionSetting = [result[0], result[1], rep.selFocusAtStart];
}
var linesMutatee = {
splice: function(start, numRemoved, newLinesVA) {
domAndRepSplice(start, numRemoved,
map(Array.prototype.slice.call(arguments, 2),
function(s) { return s.slice(0,-1); }),
null);
},
get: function(i) { return rep.lines.atIndex(i).text+'\n'; },
length: function() { return rep.lines.length(); },
slice_notused: function(start, end) {
return map(rep.lines.slice(start, end), function(e) { return e.text+'\n'; });
}
};
Changeset.mutateTextLines(changes, linesMutatee);
checkALines();
if (requiredSelectionSetting) {
performSelectionChange(lineAndColumnFromChar(requiredSelectionSetting[0]),
lineAndColumnFromChar(requiredSelectionSetting[1]),
requiredSelectionSetting[2]);
}
function domAndRepSplice(startLine, deleteCount, newLineStrings, isTimeUp) {
// dgreensp 3/2009: the spliced lines may be in the middle of a dirty region,
// so if no explicit time limit, don't spend a lot of time highlighting
isTimeUp = (isTimeUp || newTimeLimit(50));
var keysToDelete = [];
if (deleteCount > 0) {
var entryToDelete = rep.lines.atIndex(startLine);
for(var i=0;i<deleteCount;i++) {
keysToDelete.push(entryToDelete.key);
entryToDelete = rep.lines.next(entryToDelete);
}
}
var lineEntries = map(newLineStrings, createDomLineEntry);
doRepLineSplice(startLine, deleteCount, lineEntries);
var nodeToAddAfter;
if (startLine > 0) {
nodeToAddAfter = getCleanNodeByKey(rep.lines.atIndex(startLine-1).key);
}
else nodeToAddAfter = null;
insertDomLines(nodeToAddAfter, map(lineEntries, function (entry) { return entry.domInfo; }),
isTimeUp);
forEach(keysToDelete, function (k) {
var n = doc.getElementById(k);
n.parentNode.removeChild(n);
});
if ((rep.selStart && rep.selStart[0] >= startLine && rep.selStart[0] <= startLine+deleteCount) ||
(rep.selEnd && rep.selEnd[0] >= startLine && rep.selEnd[0] <= startLine+deleteCount)) {
currentCallStack.selectionAffected = true;
}
}
}
function checkChangesetLineInformationAgainstRep(changes) {
return true; // disable for speed
var opIter = Changeset.opIterator(Changeset.unpack(changes).ops);
var curOffset = 0;
var curLine = 0;
var curCol = 0;
while (opIter.hasNext()) {
var o = opIter.next();
if (o.opcode == '-' || o.opcode == '=') {
curOffset += o.chars;
if (o.lines) {
curLine += o.lines;
curCol = 0;
}
else {
curCol += o.chars;
}
}
var calcLine = rep.lines.indexOfOffset(curOffset);
var calcLineStart = rep.lines.offsetOfIndex(calcLine);
var calcCol = curOffset - calcLineStart;
if (calcCol != curCol || calcLine != curLine) {
return false;
}
}
return true;
}
function doRepApplyChangeset(changes, insertsAfterSelection) {
Changeset.checkRep(changes);
if (Changeset.oldLen(changes) != rep.alltext.length)
throw new Error("doRepApplyChangeset length mismatch: "+
Changeset.oldLen(changes)+"/"+rep.alltext.length);
if (! checkChangesetLineInformationAgainstRep(changes)) {
throw new Error("doRepApplyChangeset line break mismatch");
}
(function doRecordUndoInformation(changes) {
var editEvent = currentCallStack.editEvent;
if (editEvent.eventType == "nonundoable") {
if (! editEvent.changeset) {
editEvent.changeset = changes;
}
else {
editEvent.changeset = Changeset.compose(editEvent.changeset, changes,
rep.apool);
}
}
else {
var inverseChangeset = Changeset.inverse(changes, {get: function(i) {
return rep.lines.atIndex(i).text+'\n';
}, length: function() { return rep.lines.length(); }},
rep.alines, rep.apool);
if (! editEvent.backset) {
editEvent.backset = inverseChangeset;
}
else {
editEvent.backset = Changeset.compose(inverseChangeset,
editEvent.backset, rep.apool);
}
}
})(changes);
//rep.alltext = Changeset.applyToText(changes, rep.alltext);
Changeset.mutateAttributionLines(changes, rep.alines, rep.apool);
if (changesetTracker.isTracking()) {
changesetTracker.composeUserChangeset(changes);
}
}
function lineAndColumnFromChar(x) {
var lineEntry = rep.lines.atOffset(x);
var lineStart = rep.lines.offsetOfEntry(lineEntry);
var lineNum = rep.lines.indexOfEntry(lineEntry);
return [lineNum, x - lineStart];
}
function performDocumentReplaceCharRange(startChar, endChar, newText) {
if (startChar == endChar && newText.length == 0) {
return;
}
// Requires that the replacement preserve the property that the
// internal document text ends in a newline. Given this, we
// rewrite the splice so that it doesn't touch the very last
// char of the document.
if (endChar == rep.alltext.length) {
if (startChar == endChar) {
// an insert at end
startChar--;
endChar--;
newText = '\n'+newText.substring(0, newText.length-1);
}
else if (newText.length == 0) {
// a delete at end
startChar--;
endChar--;
}
else {
// a replace at end
endChar--;
newText = newText.substring(0, newText.length-1);
}
}
performDocumentReplaceRange(lineAndColumnFromChar(startChar),
lineAndColumnFromChar(endChar),
newText);
}
function performDocumentReplaceRange(start, end, newText) {
//dmesg(String([start.toSource(),end.toSource(),newText.toSource()]));
// start[0]: <--- start[1] --->CCCCCCCCCCC\n
// CCCCCCCCCCCCCCCCCCCC\n
// CCCC\n
// end[0]: <CCC end[1] CCC>-------\n
var builder = Changeset.builder(rep.lines.totalWidth());
buildKeepToStartOfRange(builder, start);
buildRemoveRange(builder, start, end);
builder.insert(newText, [['author',thisAuthor]], rep.apool);
var cs = builder.toString();
performDocumentApplyChangeset(cs);
}
function performDocumentApplyAttributesToCharRange(start, end, attribs) {
if (end >= rep.alltext.length) {
end = rep.alltext.length-1;
}
performDocumentApplyAttributesToRange(lineAndColumnFromChar(start),
lineAndColumnFromChar(end), attribs);
}
function performDocumentApplyAttributesToRange(start, end, attribs) {
var builder = Changeset.builder(rep.lines.totalWidth());
buildKeepToStartOfRange(builder, start);
buildKeepRange(builder, start, end, attribs, rep.apool);
var cs = builder.toString();
performDocumentApplyChangeset(cs);
}
function buildKeepToStartOfRange(builder, start) {
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
builder.keep(startLineOffset, start[0]);
builder.keep(start[1]);
}
function buildRemoveRange(builder, start, end) {
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
var endLineOffset = rep.lines.offsetOfIndex(end[0]);
if (end[0] > start[0]) {
builder.remove(endLineOffset - startLineOffset - start[1], end[0] - start[0]);
builder.remove(end[1]);
}
else {
builder.remove(end[1] - start[1]);
}
}
function buildKeepRange(builder, start, end, attribs, pool) {
var startLineOffset = rep.lines.offsetOfIndex(start[0]);
var endLineOffset = rep.lines.offsetOfIndex(end[0]);
if (end[0] > start[0]) {
builder.keep(endLineOffset - startLineOffset - start[1], end[0] - start[0], attribs, pool);
builder.keep(end[1], 0, attribs, pool);
}
else {
builder.keep(end[1] - start[1], 0, attribs, pool);
}
}
function setAttributeOnSelection(attributeName, attributeValue) {
if (!(rep.selStart && rep.selEnd)) return;
performDocumentApplyAttributesToRange(rep.selStart, rep.selEnd,
[[attributeName, attributeValue]]);
}
function toggleAttributeOnSelection(attributeName) {
if (!(rep.selStart && rep.selEnd)) return;
var selectionAllHasIt = true;
var withIt = Changeset.makeAttribsString('+', [[attributeName, 'true']], rep.apool);
var withItRegex = new RegExp(withIt.replace(/\*/g,'\\*')+"(\\*|$)");
function hasIt(attribs) { return withItRegex.test(attribs); }
var selStartLine = rep.selStart[0];
var selEndLine = rep.selEnd[0];
for(var n=selStartLine; n<=selEndLine; n++) {
var opIter = Changeset.opIterator(rep.alines[n]);
var indexIntoLine = 0;
var selectionStartInLine = 0;
var selectionEndInLine = rep.lines.atIndex(n).text.length; // exclude newline
if (n == selStartLine) {
selectionStartInLine = rep.selStart[1];
}
if (n == selEndLine) {
selectionEndInLine = rep.selEnd[1];
}
while (opIter.hasNext()) {
var op = opIter.next();
var opStartInLine = indexIntoLine;
var opEndInLine = opStartInLine + op.chars;
if (! hasIt(op.attribs)) {
// does op overlap selection?
if (! (opEndInLine <= selectionStartInLine || opStartInLine >= selectionEndInLine)) {
selectionAllHasIt = false;
break;
}
}
indexIntoLine = opEndInLine;
}
if (! selectionAllHasIt) {
break;
}
}
if (selectionAllHasIt) {
performDocumentApplyAttributesToRange(rep.selStart, rep.selEnd,
[[attributeName,'']]);
}
else {
performDocumentApplyAttributesToRange(rep.selStart, rep.selEnd,
[[attributeName,'true']]);
}
}
function performDocumentReplaceSelection(newText) {
if (!(rep.selStart && rep.selEnd)) return;
performDocumentReplaceRange(rep.selStart, rep.selEnd, newText);
}
// Change the abstract representation of the document to have a different set of lines.
// Must be called after rep.alltext is set.
function doRepLineSplice(startLine, deleteCount, newLineEntries) {
forEach(newLineEntries, function (entry) { entry.width = entry.text.length+1; });
var startOldChar = rep.lines.offsetOfIndex(startLine);
var endOldChar = rep.lines.offsetOfIndex(startLine+deleteCount);
var oldRegionStart = rep.lines.offsetOfIndex(startLine);
var oldRegionEnd = rep.lines.offsetOfIndex(startLine+deleteCount);
rep.lines.splice(startLine, deleteCount, newLineEntries);
currentCallStack.docTextChanged = true;
currentCallStack.repChanged = true;
var newRegionEnd = rep.lines.offsetOfIndex(startLine + newLineEntries.length);
var newText = map(newLineEntries, function (e) { return e.text+'\n'; }).join('');
rep.alltext = rep.alltext.substring(0, startOldChar) + newText +
rep.alltext.substring(endOldChar, rep.alltext.length);
//var newTotalLength = rep.alltext.length;
//rep.lexer.updateBuffer(rep.alltext, oldRegionStart, oldRegionEnd - oldRegionStart,
//newRegionEnd - oldRegionStart);
}
function doIncorpLineSplice(startLine, deleteCount, newLineEntries, lineAttribs, hints) {
var startOldChar = rep.lines.offsetOfIndex(startLine);
var endOldChar = rep.lines.offsetOfIndex(startLine+deleteCount);
var oldRegionStart = rep.lines.offsetOfIndex(startLine);
var selStartHintChar, selEndHintChar;
if (hints && hints.selStart) {
selStartHintChar = rep.lines.offsetOfIndex(hints.selStart[0]) + hints.selStart[1] -
oldRegionStart;
}
if (hints && hints.selEnd) {
selEndHintChar = rep.lines.offsetOfIndex(hints.selEnd[0]) + hints.selEnd[1] -
oldRegionStart;
}
var newText = map(newLineEntries, function (e) { return e.text+'\n'; }).join('');
var oldText = rep.alltext.substring(startOldChar, endOldChar);
var oldAttribs = rep.alines.slice(startLine, startLine+deleteCount).join('');
var newAttribs = lineAttribs.join('|1+1')+'|1+1'; // not valid in a changeset
var analysis = analyzeChange(oldText, newText, oldAttribs, newAttribs,
selStartHintChar, selEndHintChar);
var commonStart = analysis[0];
var commonEnd = analysis[1];
var shortOldText = oldText.substring(commonStart, oldText.length - commonEnd);
var shortNewText = newText.substring(commonStart, newText.length - commonEnd);
var spliceStart = startOldChar+commonStart;
var spliceEnd = endOldChar-commonEnd;
var shiftFinalNewlineToBeforeNewText = false;
// adjust the splice to not involve the final newline of the document;
// be very defensive
if (shortOldText.charAt(shortOldText.length-1) == '\n' &&
shortNewText.charAt(shortNewText.length-1) == '\n') {
// replacing text that ends in newline with text that also ends in newline
// (still, after analysis, somehow)
shortOldText = shortOldText.slice(0,-1);
shortNewText = shortNewText.slice(0,-1);
spliceEnd--;
commonEnd++;
}
if (shortOldText.length == 0 && spliceStart == rep.alltext.length
&& shortNewText.length > 0) {
// inserting after final newline, bad
spliceStart--;
spliceEnd--;
shortNewText = '\n'+shortNewText.slice(0,-1);
shiftFinalNewlineToBeforeNewText = true;
}
if (spliceEnd == rep.alltext.length && shortOldText.length > 0 &&
shortNewText.length == 0) {
// deletion at end of rep.alltext
if (rep.alltext.charAt(spliceStart-1) == '\n') {
// (if not then what the heck? it will definitely lead
// to a rep.alltext without a final newline)
spliceStart--;
spliceEnd--;
}
}
if (! (shortOldText.length == 0 && shortNewText.length == 0)) {
var oldDocText = rep.alltext;
var oldLen = oldDocText.length;
var spliceStartLine = rep.lines.indexOfOffset(spliceStart);
var spliceStartLineStart = rep.lines.offsetOfIndex(spliceStartLine);
function startBuilder() {
var builder = Changeset.builder(oldLen);
builder.keep(spliceStartLineStart, spliceStartLine);
builder.keep(spliceStart - spliceStartLineStart);
return builder;
}
function eachAttribRun(attribs, func/*(startInNewText, endInNewText, attribs)*/) {
var attribsIter = Changeset.opIterator(attribs);
var textIndex = 0;
var newTextStart = commonStart;
var newTextEnd = newText.length - commonEnd - (shiftFinalNewlineToBeforeNewText ? 1 : 0);
while (attribsIter.hasNext()) {
var op = attribsIter.next();
var nextIndex = textIndex + op.chars;
if (!(nextIndex <= newTextStart || textIndex >= newTextEnd)) {
func(Math.max(newTextStart, textIndex), Math.min(newTextEnd, nextIndex), op.attribs);
}
textIndex = nextIndex;
}
}
var justApplyStyles = (shortNewText == shortOldText);
var theChangeset;
if (justApplyStyles) {
// create changeset that clears the incorporated styles on
// the existing text. we compose this with the
// changeset the applies the styles found in the DOM.
// This allows us to incorporate, e.g., Safari's native "unbold".
var incorpedAttribClearer = cachedStrFunc(function (oldAtts) {
return Changeset.mapAttribNumbers(oldAtts, function(n) {
var k = rep.apool.getAttribKey(n);
if (isStyleAttribute(k)) {
return rep.apool.putAttrib([k,'']);
}
return false;
});
});
var builder1 = startBuilder();
if (shiftFinalNewlineToBeforeNewText) {
builder1.keep(1, 1);
}
eachAttribRun(oldAttribs, function(start, end, attribs) {
builder1.keepText(newText.substring(start, end), incorpedAttribClearer(attribs));
});
var clearer = builder1.toString();
var builder2 = startBuilder();
if (shiftFinalNewlineToBeforeNewText) {
builder2.keep(1, 1);
}
eachAttribRun(newAttribs, function(start, end, attribs) {
builder2.keepText(newText.substring(start, end), attribs);
});
var styler = builder2.toString();
theChangeset = Changeset.compose(clearer, styler, rep.apool);
}
else {
var builder = startBuilder();
var spliceEndLine = rep.lines.indexOfOffset(spliceEnd);
var spliceEndLineStart = rep.lines.offsetOfIndex(spliceEndLine);
if (spliceEndLineStart > spliceStart) {
builder.remove(spliceEndLineStart - spliceStart, spliceEndLine - spliceStartLine);
builder.remove(spliceEnd - spliceEndLineStart);
}
else {
builder.remove(spliceEnd - spliceStart);
}
var isNewTextMultiauthor = false;
var authorAtt = Changeset.makeAttribsString(
'+', (thisAuthor ? [['author', thisAuthor]] : []), rep.apool);
var authorizer = cachedStrFunc(function(oldAtts) {
if (isNewTextMultiauthor) {
// prefer colors from DOM
return Changeset.composeAttributes(authorAtt, oldAtts, true, rep.apool);
}
else {
// use this author's color
return Changeset.composeAttributes(oldAtts, authorAtt, true, rep.apool);
}
});
var foundDomAuthor = '';
eachAttribRun(newAttribs, function(start, end, attribs) {
var a = Changeset.attribsAttributeValue(attribs, 'author', rep.apool);
if (a && a != foundDomAuthor) {
if (! foundDomAuthor) {
foundDomAuthor = a;
}
else {
isNewTextMultiauthor = true; // multiple authors in DOM!
}
}
});
if (shiftFinalNewlineToBeforeNewText) {
builder.insert('\n', authorizer(''));
}
eachAttribRun(newAttribs, function(start, end, attribs) {
builder.insert(newText.substring(start, end), authorizer(attribs));
});
theChangeset = builder.toString();
}
//dmesg(htmlPrettyEscape(theChangeset));
doRepApplyChangeset(theChangeset);
}
// do this no matter what, because we need to get the right
// line keys into the rep.
doRepLineSplice(startLine, deleteCount, newLineEntries);
checkALines();
}
function cachedStrFunc(func) {
var cache = {};
return function(s) {
if (! cache[s]) {
cache[s] = func(s);
}
return cache[s];
};
}
function analyzeChange(oldText, newText, oldAttribs, newAttribs, optSelStartHint, optSelEndHint) {
function incorpedAttribFilter(anum) {
return isStyleAttribute(rep.apool.getAttribKey(anum));
}
function attribRuns(attribs) {
var lengs = [];
var atts = [];
var iter = Changeset.opIterator(attribs);
while (iter.hasNext()) {
var op = iter.next();
lengs.push(op.chars);
atts.push(op.attribs);
}
return [lengs,atts];
}
function attribIterator(runs, backward) {
var lengs = runs[0];
var atts = runs[1];
var i = (backward ? lengs.length-1 : 0);
var j = 0;
return function next() {
while (j >= lengs[i]) {
if (backward) i--; else i++;
j = 0;
}
var a = atts[i];
j++;
return a;
};
}
var oldLen = oldText.length;
var newLen = newText.length;
var minLen = Math.min(oldLen, newLen);
var oldARuns = attribRuns(Changeset.filterAttribNumbers(oldAttribs, incorpedAttribFilter));
var newARuns = attribRuns(Changeset.filterAttribNumbers(newAttribs, incorpedAttribFilter));
var commonStart = 0;
var oldStartIter = attribIterator(oldARuns, false);
var newStartIter = attribIterator(newARuns, false);
while (commonStart < minLen) {
if (oldText.charAt(commonStart) == newText.charAt(commonStart) &&
oldStartIter() == newStartIter()) {
commonStart++;
}
else break;
}
var commonEnd = 0;
var oldEndIter = attribIterator(oldARuns, true);
var newEndIter = attribIterator(newARuns, true);
while (commonEnd < minLen) {
if (commonEnd == 0) {
// assume newline in common
oldEndIter(); newEndIter();
commonEnd++;
}
else if (oldText.charAt(oldLen-1-commonEnd) == newText.charAt(newLen-1-commonEnd) &&
oldEndIter() == newEndIter()) {
commonEnd++;
}
else break;
}
var hintedCommonEnd = -1;
if ((typeof optSelEndHint) == "number") {
hintedCommonEnd = newLen - optSelEndHint;
}
if (commonStart + commonEnd > oldLen) {
// ambiguous insertion
var minCommonEnd = oldLen - commonStart;
var maxCommonEnd = commonEnd;
if (hintedCommonEnd >= minCommonEnd && hintedCommonEnd <= maxCommonEnd) {
commonEnd = hintedCommonEnd;
}
else {
commonEnd = minCommonEnd;
}
commonStart = oldLen - commonEnd;
}
if (commonStart + commonEnd > newLen) {
// ambiguous deletion
var minCommonEnd = newLen - commonStart;
var maxCommonEnd = commonEnd;
if (hintedCommonEnd >= minCommonEnd && hintedCommonEnd <= maxCommonEnd) {
commonEnd = hintedCommonEnd;
}
else {
commonEnd = minCommonEnd;
}
commonStart = newLen - commonEnd;
}
return [commonStart, commonEnd];
}
function equalLineAndChars(a, b) {
if (!a) return !b;
if (!b) return !a;
return (a[0] == b[0] && a[1] == b[1]);
}
function performSelectionChange(selectStart, selectEnd, focusAtStart) {
if (repSelectionChange(selectStart, selectEnd, focusAtStart)) {
currentCallStack.selectionAffected = true;
}
}
// Change the abstract representation of the document to have a different selection.
// Should not rely on the line representation. Should not affect the DOM.
function repSelectionChange(selectStart, selectEnd, focusAtStart) {
focusAtStart = !! focusAtStart;
var newSelFocusAtStart = (focusAtStart &&
((! selectStart) || (! selectEnd) ||
(selectStart[0] != selectEnd[0]) ||
(selectStart[1] != selectEnd[1])));
if ((! equalLineAndChars(rep.selStart, selectStart)) ||
(! equalLineAndChars(rep.selEnd, selectEnd)) ||
(rep.selFocusAtStart != newSelFocusAtStart)) {
rep.selStart = selectStart;
rep.selEnd = selectEnd;
rep.selFocusAtStart = newSelFocusAtStart;
if (mozillaFakeArrows) mozillaFakeArrows.notifySelectionChanged();
currentCallStack.repChanged = true;
return true;
//console.log("selStart: %o, selEnd: %o, focusAtStart: %s", rep.selStart, rep.selEnd,
//String(!!rep.selFocusAtStart));
}
return false;
//console.log("%o %o %s", rep.selStart, rep.selEnd, rep.selFocusAtStart);
}
/*function escapeHTML(s) {
var re = /[&<>'"]/g; /']/; // stupid indentation thing
if (! re.MAP) {
// persisted across function calls!
re.MAP = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
};
}
return s.replace(re, function(c) { return re.MAP[c]; });
}*/
function doCreateDomLine(nonEmpty) {
if (browser.msie && (! nonEmpty)) {
var result = { node: null,
appendSpan: noop,
prepareForAdd: noop,
notifyAdded: noop,
clearSpans: noop,
finishUpdate: noop,
lineMarker: 0 };
var lineElem = doc.createElement("div");
result.node = lineElem;
result.notifyAdded = function() {
// magic -- settng an empty div's innerHTML to the empty string
// keeps it from collapsing. Apparently innerHTML must be set *after*
// adding the node to the DOM.
// Such a div is what IE 6 creates naturally when you make a blank line
// in a document of divs. However, when copy-and-pasted the div will
// contain a space, so we note its emptiness with a property.
lineElem.innerHTML = "";
// a primitive-valued property survives copy-and-paste
setAssoc(lineElem, "shouldBeEmpty", true);
// an object property doesn't
setAssoc(lineElem, "unpasted", {});
};
var lineClass = 'ace-line';
result.appendSpan = function(txt, cls) {
if ((! txt) && cls) {
// gain a whole-line style (currently to show insertion point in CSS)
lineClass = domline.addToLineClass(lineClass, cls);
}
// otherwise, ignore appendSpan, this is an empty line
};
result.clearSpans = function() {
lineClass = ''; // non-null to cause update
};
function writeClass() {
if (lineClass !== null) lineElem.className = lineClass;
}
result.prepareForAdd = writeClass;
result.finishUpdate = writeClass;
result.getInnerHTML = function() { return ""; };
return result;
}
else {
return domline.createDomLine(nonEmpty, doesWrap, browser, doc);
}
}
function textify(str) {
return str.replace(/[\n\r ]/g, ' ').replace(/\xa0/g, ' ').replace(/\t/g, ' ');
}
var _blockElems = { "div":1, "p":1, "pre":1, "li":1, "ol":1, "ul":1 };
function isBlockElement(n) {
return !!_blockElems[(n.tagName || "").toLowerCase()];
}
function getDirtyRanges() {
// based on observedChanges, return a list of ranges of original lines
// that need to be removed or replaced with new user content to incorporate
// the user's changes into the line representation. ranges may be zero-length,
// indicating inserted content. for example, [0,0] means content was inserted
// at the top of the document, while [3,4] means line 3 was deleted, modified,
// or replaced with one or more new lines of content. ranges do not touch.
var p = PROFILER("getDirtyRanges", false);
p.forIndices = 0;
p.consecutives = 0;
p.corrections = 0;
var cleanNodeForIndexCache = {};
var N = rep.lines.length(); // old number of lines
function cleanNodeForIndex(i) {
// if line (i) in the un-updated line representation maps to a clean node
// in the document, return that node.
// if (i) is out of bounds, return true. else return false.
if (cleanNodeForIndexCache[i] === undefined) {
p.forIndices++;
var result;
if (i < 0 || i >= N) {
result = true; // truthy, but no actual node
}
else {
var key = rep.lines.atIndex(i).key;
result = (getCleanNodeByKey(key) || false);
}
cleanNodeForIndexCache[i] = result;
}
return cleanNodeForIndexCache[i];
}
var isConsecutiveCache = {};
function isConsecutive(i) {
if (isConsecutiveCache[i] === undefined) {
p.consecutives++;
isConsecutiveCache[i] = (function() {
// returns whether line (i) and line (i-1), assumed to be map to clean DOM nodes,
// or document boundaries, are consecutive in the changed DOM
var a = cleanNodeForIndex(i-1);
var b = cleanNodeForIndex(i);
if ((!a) || (!b)) return false; // violates precondition
if ((a === true) && (b === true)) return ! root.firstChild;
if ((a === true) && b.previousSibling) return false;
if ((b === true) && a.nextSibling) return false;
if ((a === true) || (b === true)) return true;
return a.nextSibling == b;
})();
}
return isConsecutiveCache[i];
}
function isClean(i) {
// returns whether line (i) in the un-updated representation maps to a clean node,
// or is outside the bounds of the document
return !! cleanNodeForIndex(i);
}
// list of pairs, each representing a range of lines that is clean and consecutive
// in the changed DOM. lines (-1) and (N) are always clean, but may or may not
// be consecutive with lines in the document. pairs are in sorted order.
var cleanRanges = [[-1,N+1]];
function rangeForLine(i) {
// returns index of cleanRange containing i, or -1 if none
var answer = -1;
forEach(cleanRanges, function (r, idx) {
if (i >= r[1]) return false; // keep looking
if (i < r[0]) return true; // not found, stop looking
answer = idx;
return true; // found, stop looking
});
return answer;
}
function removeLineFromRange(rng, line) {
// rng is index into cleanRanges, line is line number
// precond: line is in rng
var a = cleanRanges[rng][0];
var b = cleanRanges[rng][1];
if ((a+1) == b) cleanRanges.splice(rng, 1);
else if (line == a) cleanRanges[rng][0]++;
else if (line == (b-1)) cleanRanges[rng][1]--;
else cleanRanges.splice(rng, 1, [a,line], [line+1,b]);
}
function splitRange(rng, pt) {
// precond: pt splits cleanRanges[rng] into two non-empty ranges
var a = cleanRanges[rng][0];
var b = cleanRanges[rng][1];
cleanRanges.splice(rng, 1, [a,pt], [pt,b]);
}
var correctedLines = {};
function correctlyAssignLine(line) {
if (correctedLines[line]) return true;
p.corrections++;
correctedLines[line] = true;
// "line" is an index of a line in the un-updated rep.
// returns whether line was already correctly assigned (i.e. correctly
// clean or dirty, according to cleanRanges, and if clean, correctly
// attached or not attached (i.e. in the same range as) the prev and next lines).
//console.log("correctly assigning: %d", line);
var rng = rangeForLine(line);
var lineClean = isClean(line);
if (rng < 0) {
if (lineClean) {
console.debug("somehow lost clean line");
}
return true;
}
if (! lineClean) {
// a clean-range includes this dirty line, fix it
removeLineFromRange(rng, line);
return false;
}
else {
// line is clean, but could be wrongly connected to a clean line
// above or below
var a = cleanRanges[rng][0];
var b = cleanRanges[rng][1];
var didSomething = false;
// we'll leave non-clean adjacent nodes in the clean range for the caller to
// detect and deal with. we deal with whether the range should be split
// just above or just below this line.
if (a < line && isClean(line-1) && ! isConsecutive(line)) {
splitRange(rng, line);
didSomething = true;
}
if (b > (line+1) && isClean(line+1) && ! isConsecutive(line+1)) {
splitRange(rng, line+1);
didSomething = true;
}
return ! didSomething;
}
}
function detectChangesAroundLine(line, reqInARow) {
// make sure cleanRanges is correct about line number "line" and the surrounding
// lines; only stops checking at end of document or after no changes need
// making for several consecutive lines. note that iteration is over old lines,
// so this operation takes time proportional to the number of old lines
// that are changed or missing, not the number of new lines inserted.
var correctInARow = 0;
var currentIndex = line;
while (correctInARow < reqInARow && currentIndex >= 0) {
if (correctlyAssignLine(currentIndex)) {
correctInARow++;
}
else correctInARow = 0;
currentIndex--;
}
correctInARow = 0;
currentIndex = line;
while (correctInARow < reqInARow && currentIndex < N) {
if (correctlyAssignLine(currentIndex)) {
correctInARow++;
}
else correctInARow = 0;
currentIndex++;
}
}
if (N == 0) {
p.cancel();
if (! isConsecutive(0)) {
splitRange(0, 0);
}
}
else {
p.mark("topbot");
detectChangesAroundLine(0,1);
detectChangesAroundLine(N-1,1);
p.mark("obs");
//console.log("observedChanges: "+toSource(observedChanges));
for (var k in observedChanges.cleanNodesNearChanges) {
var key = k.substring(1);
if (rep.lines.containsKey(key)) {
var line = rep.lines.indexOfKey(key);
detectChangesAroundLine(line,2);
}
}
p.mark("stats&calc");
p.literal(p.forIndices, "byidx");
p.literal(p.consecutives, "cons");
p.literal(p.corrections, "corr");
}
var dirtyRanges = [];
for(var r=0;r<cleanRanges.length-1;r++) {
dirtyRanges.push([cleanRanges[r][1], cleanRanges[r+1][0]]);
}
p.end();
return dirtyRanges;
}
function markNodeClean(n) {
// clean nodes have knownHTML that matches their innerHTML
var dirtiness = {};
dirtiness.nodeId = uniqueId(n);
dirtiness.knownHTML = n.innerHTML;
if (browser.msie) {
// adding a space to an "empty" div in IE designMode doesn't
// change the innerHTML of the div's parent; also, other
// browsers don't support innerText
dirtiness.knownText = n.innerText;
}
setAssoc(n, "dirtiness", dirtiness);
}
function isNodeDirty(n) {
var p = PROFILER("cleanCheck", false);
if (n.parentNode != root) return true;
var data = getAssoc(n, "dirtiness");
if (!data) return true;
if (n.id !== data.nodeId) return true;
if (browser.msie) {
if (n.innerText !== data.knownText) return true;
}
if (n.innerHTML !== data.knownHTML) return true;
p.end();
return false;
}
function getLineEntryTopBottom(entry, destObj) {
var dom = entry.lineNode;
var top = dom.offsetTop;
var height = dom.offsetHeight;
var obj = (destObj || {});
obj.top = top;
obj.bottom = (top+height);
return obj;
}
function getViewPortTopBottom() {
var theTop = getScrollY();
var doc = outerWin.document;
var height = doc.documentElement.clientHeight;
return {top:theTop, bottom:(theTop+height)};
}
function getVisibleLineRange() {
var viewport = getViewPortTopBottom();
//console.log("viewport top/bottom: %o", viewport);
var obj = {};
var start = rep.lines.search(function (e) {
return getLineEntryTopBottom(e, obj).bottom > viewport.top;
});
var end = rep.lines.search(function(e) {
return getLineEntryTopBottom(e, obj).top >= viewport.bottom;
});
if (end < start) end = start; // unlikely
//console.log(start+","+end);
return [start,end];
}
function getVisibleCharRange() {
var lineRange = getVisibleLineRange();
return [rep.lines.offsetOfIndex(lineRange[0]),
rep.lines.offsetOfIndex(lineRange[1])];
}
function handleClick(evt) {
inCallStack("handleClick", function() {
idleWorkTimer.atMost(200);
});
// only want to catch left-click
if ((! evt.ctrlKey) && (evt.button != 2) && (evt.button != 3)) {
// find A tag with HREF
function isLink(n) { return (n.tagName||'').toLowerCase() == "a" && n.href; }
var n = evt.target;
while (n && n.parentNode && ! isLink(n)) { n = n.parentNode; }
if (n && isLink(n)) {
try {
var newWindow = window.open(n.href, '_blank');
newWindow.focus();
}
catch (e) {
// absorb "user canceled" error in IE for certain prompts
}
evt.preventDefault();
}
}
}
function doReturnKey() {
if (! (rep.selStart && rep.selEnd)) {
return;
}
var lineNum = rep.selStart[0];
var listType = getLineListType(lineNum);
performDocumentReplaceSelection('\n');
if (listType) {
if (lineNum+1 < rep.lines.length()) {
setLineListType(lineNum+1, listType);
}
}
else {
handleReturnIndentation();
}
}
function doIndentOutdent(isOut) {
if (! (rep.selStart && rep.selEnd)) {
return false;
}
var firstLine, lastLine;
firstLine = rep.selStart[0];
lastLine = Math.max(firstLine,
rep.selEnd[0] - ((rep.selEnd[1] == 0) ? 1 : 0));
var mods = [];
var foundLists = false;
for(var n=firstLine;n<=lastLine;n++) {
var listType = getLineListType(n);
if (listType) {
listType = /([a-z]+)([12345678])/.exec(listType);
if (listType) {
foundLists = true;
var t = listType[1];
var level = Number(listType[2]);
var newLevel =
Math.max(1, Math.min(MAX_LIST_LEVEL,
level + (isOut ? -1 : 1)));
if (level != newLevel) {
mods.push([n, t+newLevel]);
}
}
}
}
if (mods.length > 0) {
setLineListTypes(mods);
}
return foundLists;
}
function doTabKey(shiftDown) {
if (! doIndentOutdent(shiftDown)) {
performDocumentReplaceSelection(THE_TAB);
}
}
function doDeleteKey(optEvt) {
var evt = optEvt || {};
var handled = false;
if (rep.selStart) {
if (isCaret()) {
var lineNum = caretLine();
var col = caretColumn();
var lineEntry = rep.lines.atIndex(lineNum);
var lineText = lineEntry.text;
var lineMarker = lineEntry.lineMarker;
if (/^ +$/.exec(lineText.substring(lineMarker, col))) {
var col2 = col - lineMarker;
var tabSize = THE_TAB.length;
var toDelete = ((col2 - 1) % tabSize)+1;
performDocumentReplaceRange([lineNum,col-toDelete],
[lineNum,col], '');
//scrollSelectionIntoView();
handled = true;
}
}
if (! handled) {
if (isCaret()) {
var theLine = caretLine();
var lineEntry = rep.lines.atIndex(theLine);
if (caretColumn() <= lineEntry.lineMarker) {
// delete at beginning of line
var action = 'delete_newline';
var prevLineListType =
(theLine > 0 ? getLineListType(theLine-1) : '');
var thisLineListType = getLineListType(theLine);
var prevLineEntry = (theLine > 0 &&
rep.lines.atIndex(theLine-1));
var prevLineBlank = (prevLineEntry &&
prevLineEntry.text.length ==
prevLineEntry.lineMarker);
if (thisLineListType) {
// this line is a list
/*if (prevLineListType) {
// prev line is a list too, remove this bullet
performDocumentReplaceRange([theLine-1, prevLineEntry.text.length],
[theLine, lineEntry.lineMarker], '');
}
else*/ if (prevLineBlank && ! prevLineListType) {
// previous line is blank, remove it
performDocumentReplaceRange([theLine-1, prevLineEntry.text.length],
[theLine, 0], '');
}
else {
// delistify
performDocumentReplaceRange([theLine, 0],
[theLine, lineEntry.lineMarker], '');
}
}
else if (theLine > 0) {
// remove newline
performDocumentReplaceRange([theLine-1, prevLineEntry.text.length],
[theLine, 0], '');
}
}
else {
var docChar = caretDocChar();
if (docChar > 0) {
if (evt.metaKey || evt.ctrlKey || evt.altKey) {
// delete as many unicode "letters or digits" in a row as possible;
// always delete one char, delete further even if that first char
// isn't actually a word char.
var deleteBackTo = docChar-1;
while (deleteBackTo > lineEntry.lineMarker &&
isWordChar(rep.alltext.charAt(deleteBackTo-1))) {
deleteBackTo--;
}
performDocumentReplaceCharRange(deleteBackTo, docChar, '');
}
else {
// normal delete
performDocumentReplaceCharRange(docChar-1, docChar, '');
}
}
}
}
else {
performDocumentReplaceSelection('');
}
}
}
}
// set of "letter or digit" chars is based on section 20.5.16 of the original Java Language Spec
var REGEX_WORDCHAR = /[\u0030-\u0039\u0041-\u005A\u0061-\u007A\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF\u0100-\u1FFF\u3040-\u9FFF\uF900-\uFDFF\uFE70-\uFEFE\uFF10-\uFF19\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFDC]/;
var REGEX_SPACE = /\s/;
function isWordChar(c) {
return !! REGEX_WORDCHAR.exec(c);
}
function isSpaceChar(c) {
return !! REGEX_SPACE.exec(c);
}
function moveByWordInLine(lineText, initialIndex, forwardNotBack) {
var i = initialIndex;
function nextChar() {
if (forwardNotBack) return lineText.charAt(i);
else return lineText.charAt(i-1);
}
function advance() { if (forwardNotBack) i++; else i--; }
function isDone() {
if (forwardNotBack) return i >= lineText.length;
else return i <= 0;
}
// On Mac and Linux, move right moves to end of word and move left moves to start;
// on Windows, always move to start of word.
// On Windows, Firefox and IE disagree on whether to stop for punctuation (FF says no).
if (browser.windows && forwardNotBack) {
while ((! isDone()) && isWordChar(nextChar())) { advance(); }
while ((! isDone()) && ! isWordChar(nextChar())) { advance(); }
}
else {
while ((! isDone()) && ! isWordChar(nextChar())) { advance(); }
while ((! isDone()) && isWordChar(nextChar())) { advance(); }
}
return i;
}
function handleKeyEvent(evt) {
if (DEBUG && top.DONT_INCORP) return;
/*if (evt.which == 48) {
//setEditable(! isEditable);
//doAlert(getInnerWidth());
//doAlert(doc.documentElement.innerWidth)
alert(eval(prompt()));
evt.preventDefault();
return;
}*/
/*if (evt.which == 48) {
alert(doc.body.innerHTML);
}*/
/*if (evt.which == 48 && evt.type == "keydown") {
var lineHeights = [];
function eachChild(node, func) {
if (node.firstChild) {
var n = node.firstChild;
while (n) {
func(n);
n = n.nextSibling;
}
}
}
eachChild(doc.body, function (n) {
if (n.clientHeight) {
lineHeights.push(n.clientHeight);
}
});
alert(lineHeights.join(','));
}*/
/*if (evt.which == 48) {
top.DONT_INCORP = true;
var cmdTarget = doc;
if (browser.msie) {
if (doc.selection) {
cmdTarget = doc.selection.createRange();
}
else cmdTarget = null;
}
if (cmdTarget) {
cmdTarget.execCommand("Bold", false, null);
}
alert(doc.body.innerHTML);
evt.preventDefault();
return;
}*/
/*if (evt.which == 48) {
if (evt.type == "keypress") {
top.console.log(window.getSelection().getRangeAt(0));
evt.preventDefault();
}
return;
}*/
/*if (evt.which == 48) {
if (evt.type == "keypress") {
inCallStack("bold", function() {
fastIncorp(9);
toggleAttributeOnSelection('bold');
});
evt.preventDefault();
}
return;
}*/
/*if (evt.which == 48) {
if (evt.type == "keypress") {
inCallStack("insertunorderedlist", function() {
fastIncorp(9);
doInsertUnorderedList();
});
evt.preventDefault();
}
return;
}*/
if (! isEditable) return;
var type = evt.type;
var charCode = evt.charCode;
var keyCode = evt.keyCode;
var mods = "";
if (evt.altKey) mods = mods+"A";
if (evt.ctrlKey) mods = mods+"C";
if (evt.shiftKey) mods = mods+"S";
if (evt.metaKey) mods = mods+"M";
var modsPrfx = "";
if (mods) modsPrfx = mods+"-";
var which = evt.which;
//dmesg("keyevent type: "+type+", which: "+which);
// Don't take action based on modifier keys going up and down.
// Modifier keys do not generate "keypress" events.
// 224 is the command-key under Mac Firefox.
// 91 is the Windows key in IE; it is ASCII for open-bracket but isn't the keycode for that key
// 20 is capslock in IE.
var isModKey = ((!charCode) &&
((type == "keyup") || (type == "keydown")) &&
(keyCode == 16 || keyCode == 17 || keyCode == 18 || keyCode == 20 || keyCode == 224
|| keyCode == 91));
if (isModKey) return;
var specialHandled = false;
var isTypeForSpecialKey = ((browser.msie || browser.safari) ?
(type == "keydown") : (type == "keypress"));
var isTypeForCmdKey = ((browser.msie || browser.safari) ? (type == "keydown") : (type == "keypress"));
var stopped = false;
inCallStack("handleKeyEvent", function() {
if (type == "keypress" ||
(isTypeForSpecialKey && keyCode == 13/*return*/)) {
// in IE, special keys don't send keypress, the keydown does the action
if (! outsideKeyPress(evt)) {
evt.preventDefault();
stopped = true;
}
}
else if (type == "keydown") {
outsideKeyDown(evt);
}
if (! stopped) {
if (isTypeForSpecialKey && keyCode == 8) {
// "delete" key; in mozilla, if we're at the beginning of a line, normalize now,
// or else deleting a blank line can take two delete presses.
// --
// we do deletes completely customly now:
// - allows consistent (and better) meta-delete behavior
// - normalizing and then allowing default behavior confused IE
// - probably eliminates a few minor quirks
fastIncorp(3);
evt.preventDefault();
doDeleteKey(evt);
specialHandled = true;
}
if ((!specialHandled) && isTypeForSpecialKey && keyCode == 13) {
// return key, handle specially;
// note that in mozilla we need to do an incorporation for proper return behavior anyway.
fastIncorp(4);
evt.preventDefault();
doReturnKey();
//scrollSelectionIntoView();
scheduler.setTimeout(function() {outerWin.scrollBy(-100,0);}, 0);
specialHandled = true;
}
if ((!specialHandled) && isTypeForSpecialKey && keyCode == 9 &&
! (evt.metaKey || evt.ctrlKey)) {
// tab
fastIncorp(5);
evt.preventDefault();
doTabKey(evt.shiftKey);
//scrollSelectionIntoView();
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "z" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-Z (undo)
fastIncorp(6);
evt.preventDefault();
if (evt.shiftKey) {
doUndoRedo("redo");
}
else {
doUndoRedo("undo");
}
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "y" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-Y (redo)
fastIncorp(10);
evt.preventDefault();
doUndoRedo("redo");
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "b" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-B (bold)
fastIncorp(13);
evt.preventDefault();
toggleAttributeOnSelection('bold');
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "i" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-I (italic)
fastIncorp(14);
evt.preventDefault();
toggleAttributeOnSelection('italic');
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "u" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-U (underline)
fastIncorp(15);
evt.preventDefault();
toggleAttributeOnSelection('underline');
specialHandled = true;
}
if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "h" &&
(evt.ctrlKey)) {
// cmd-H (backspace)
fastIncorp(20);
evt.preventDefault();
doDeleteKey();
specialHandled = true;
}
/*if ((!specialHandled) && isTypeForCmdKey &&
String.fromCharCode(which).toLowerCase() == "u" &&
(evt.metaKey || evt.ctrlKey)) {
// cmd-U
doc.body.innerHTML = '';
evt.preventDefault();
specialHandled = true;
}*/
if (mozillaFakeArrows && mozillaFakeArrows.handleKeyEvent(evt)) {
evt.preventDefault();
specialHandled = true;
}
}
if (type == "keydown") {
idleWorkTimer.atLeast(500);
}
else if (type == "keypress") {
if ((! specialHandled) && parenModule.shouldNormalizeOnChar(charCode)) {
idleWorkTimer.atMost(0);
}
else {
idleWorkTimer.atLeast(500);
}
}
else if (type == "keyup") {
var wait = 200;
idleWorkTimer.atLeast(wait);
idleWorkTimer.atMost(wait);
}
// Is part of multi-keystroke international character on Firefox Mac
var isFirefoxHalfCharacter =
(browser.mozilla && evt.altKey && charCode == 0 && keyCode == 0);
// Is part of multi-keystroke international character on Safari Mac
var isSafariHalfCharacter =
(browser.safari && evt.altKey && keyCode == 229);
if (thisKeyDoesntTriggerNormalize || isFirefoxHalfCharacter || isSafariHalfCharacter) {
idleWorkTimer.atLeast(3000); // give user time to type
// if this is a keydown, e.g., the keyup shouldn't trigger a normalize
thisKeyDoesntTriggerNormalize = true;
}
if ((! specialHandled) && (! thisKeyDoesntTriggerNormalize) &&
(! inInternationalComposition)) {
if (type != "keyup" || ! incorpIfQuick()) {
observeChangesAroundSelection();
}
}
if (type == "keyup") {
thisKeyDoesntTriggerNormalize = false;
}
});
}
var thisKeyDoesntTriggerNormalize = false;
function doUndoRedo(which) {
// precond: normalized DOM
if (undoModule.enabled) {
var whichMethod;
if (which == "undo") whichMethod = 'performUndo';
if (which == "redo") whichMethod = 'performRedo';
if (whichMethod) {
var oldEventType = currentCallStack.editEvent.eventType;
currentCallStack.startNewEvent(which);
undoModule[whichMethod](function(backset, selectionInfo) {
if (backset) {
performDocumentApplyChangeset(backset);
}
if (selectionInfo) {
performSelectionChange(lineAndColumnFromChar(selectionInfo.selStart),
lineAndColumnFromChar(selectionInfo.selEnd),
selectionInfo.selFocusAtStart);
}
var oldEvent = currentCallStack.startNewEvent(oldEventType, true);
return oldEvent;
});
}
}
}
/*function enforceNewTextTypedStyle() {
var sel = getSelection();
var n = (sel && sel.startPoint && sel.startPoint.node);
if (!n) return;
var isInOurNode = false;
while (n) {
if (n.tagName) {
var tag = n.tagName.toLowerCase();
if (tag == "b" || tag == "strong") {
isInOurNode = true;
break;
}
if (((typeof n.className) == "string") &&
n.className.toLowerCase().indexOf("Apple-style-span") >= 0) {
isInOurNode = true;
break;
}
}
n = n.parentNode;
}
if (! isInOurNode) {
doc.execCommand("Bold", false, null);
}
if (! browser.msie) {
var browserSelection = window.getSelection();
if (browserSelection && browserSelection.type != "None" &&
browserSelection.rangeCount !== 0) {
var range = browserSelection.getRangeAt(0);
var surrounder = doc.createElement("B");
range.surroundContents(surrounder);
range.selectNodeContents(surrounder);
browserSelection.removeAllRanges();
browserSelection.addRange(range);
}
}
}*/
function updateBrowserSelectionFromRep() {
// requires normalized DOM!
var selStart = rep.selStart, selEnd = rep.selEnd;
if (!(selStart && selEnd)) {
setSelection(null);
return;
}
var mozillaCaretHack = (false && browser.mozilla && selStart && selEnd &&
selStart[0] == selEnd[0]
&& selStart[1] == rep.lines.atIndex(selStart[0]).lineMarker
&& selEnd[1] == rep.lines.atIndex(selEnd[0]).lineMarker &&
setupMozillaCaretHack(selStart[0]));
var selection = {};
var ss = [selStart[0], selStart[1]];
if (mozillaCaretHack) ss[1] += 1;
selection.startPoint = getPointForLineAndChar(ss);
var se = [selEnd[0], selEnd[1]];
if (mozillaCaretHack) se[1] += 1;
selection.endPoint = getPointForLineAndChar(se);
selection.focusAtStart = !!rep.selFocusAtStart;
setSelection(selection);
if (mozillaCaretHack) {
mozillaCaretHack.unhack();
}
}
function getRepHTML() {
/*function lineWithSelection(text, lineNum) {
var haveSelStart = (rep.selStart && rep.selStart[0] == lineNum);
var haveSelEnd = (rep.selEnd && rep.selEnd[0] == lineNum);
var startCol = (haveSelStart && rep.selStart[1]);
var endCol = (haveSelEnd && rep.selEnd[1]);
var len = text.length;
if (haveSelStart && haveSelEnd && startCol == endCol) {
var color = "#000";
if (endCol == len) {
return '<span style="border-right: 1px solid '+color+'">'+
htmlEscape(text)+'</span>';
}
else {
return htmlEscape
}
}
}*/
return map(rep.lines.slice(), function (entry) {
var text = entry.text;
var content;
if (text.length == 0) {
content = '<span style="color: #aaa">--</span>';
}
else {
content = htmlPrettyEscape(text);
}
return '<div><code>'+content+'</div></code>';
}).join('');
}
function nodeMaxIndex(nd) {
if (isNodeText(nd)) return nd.nodeValue.length;
else return 1;
}
function hasIESelection() {
var browserSelection;
try { browserSelection = doc.selection; } catch (e) {}
if (! browserSelection) return false;
var origSelectionRange;
try { origSelectionRange = browserSelection.createRange(); } catch (e) {}
if (! origSelectionRange) return false;
var selectionParent = origSelectionRange.parentElement();
if (selectionParent.ownerDocument != doc) return false;
return true;
}
function getSelection() {
// returns null, or a structure containing startPoint and endPoint,
// each of which has node (a magicdom node), index, and maxIndex. If the node
// is a text node, maxIndex is the length of the text; else maxIndex is 1.
// index is between 0 and maxIndex, inclusive.
if (browser.msie) {
var browserSelection;
try { browserSelection = doc.selection; } catch (e) {}
if (! browserSelection) return null;
var origSelectionRange;
try { origSelectionRange = browserSelection.createRange(); } catch (e) {}
if (! origSelectionRange) return null;
var selectionParent = origSelectionRange.parentElement();
if (selectionParent.ownerDocument != doc) return null;
function newRange() {
return doc.body.createTextRange();
}
function rangeForElementNode(nd) {
var rng = newRange();
// doesn't work on text nodes
rng.moveToElementText(nd);
return rng;
}
function pointFromCollapsedRange(rng) {
var parNode = rng.parentElement();
var elemBelow = -1;
var elemAbove = parNode.childNodes.length;
var rangeWithin = rangeForElementNode(parNode);
if (rng.compareEndPoints("StartToStart", rangeWithin) == 0) {
return {node:parNode, index:0, maxIndex:1};
}
else if (rng.compareEndPoints("EndToEnd", rangeWithin) == 0) {
if (isBlockElement(parNode) && parNode.nextSibling) {
// caret after block is not consistent across browsers
// (same line vs next) so put caret before next node
return {node:parNode.nextSibling, index:0, maxIndex:1};
}
return {node:parNode, index:1, maxIndex:1};
}
else if (parNode.childNodes.length == 0) {
return {node:parNode, index:0, maxIndex:1};
}
for(var i=0;i<parNode.childNodes.length;i++) {
var n = parNode.childNodes.item(i);
if (! isNodeText(n)) {
var nodeRange = rangeForElementNode(n);
var startComp = rng.compareEndPoints("StartToStart", nodeRange);
var endComp = rng.compareEndPoints("EndToEnd", nodeRange);
if (startComp >= 0 && endComp <= 0) {
var index = 0;
if (startComp > 0) {
index = 1;
}
return {node:n, index:index, maxIndex:1};
}
else if (endComp > 0) {
if (i > elemBelow) {
elemBelow = i;
rangeWithin.setEndPoint("StartToEnd", nodeRange);
}
}
else if (startComp < 0) {
if (i < elemAbove) {
elemAbove = i;
rangeWithin.setEndPoint("EndToStart", nodeRange);
}
}
}
}
if ((elemAbove - elemBelow) == 1) {
if (elemBelow >= 0) {
return {node:parNode.childNodes.item(elemBelow), index:1, maxIndex:1};
}
else {
return {node:parNode.childNodes.item(elemAbove), index:0, maxIndex:1};
}
}
var idx = 0;
var r = rng.duplicate();
// infinite stateful binary search! call function for values 0 to inf,
// expecting the answer to be about 40. return index of smallest
// true value.
var indexIntoRange = binarySearchInfinite(40, function (i) {
// the search algorithm whips the caret back and forth,
// though it has to be moved relatively and may hit
// the end of the buffer
var delta = i-idx;
var moved = Math.abs(r.move("character", -delta));
// next line is work-around for fact that when moving left, the beginning
// of a text node is considered to be after the start of the parent element:
if (r.move("character", -1)) r.move("character", 1);
if (delta < 0) idx -= moved;
else idx += moved;
return (r.compareEndPoints("StartToStart", rangeWithin) <= 0);
});
// iterate over consecutive text nodes, point is in one of them
var textNode = elemBelow+1;
var indexLeft = indexIntoRange;
while (textNode < elemAbove) {
var tn = parNode.childNodes.item(textNode);
if (indexLeft <= tn.nodeValue.length) {
return {node:tn, index:indexLeft, maxIndex:tn.nodeValue.length};
}
indexLeft -= tn.nodeValue.length;
textNode++;
}
var tn = parNode.childNodes.item(textNode-1);
return {node:tn, index:tn.nodeValue.length, maxIndex:tn.nodeValue.length};
}
var selection = {};
if (origSelectionRange.compareEndPoints("StartToEnd", origSelectionRange) == 0) {
// collapsed
var pnt = pointFromCollapsedRange(origSelectionRange);
selection.startPoint = pnt;
selection.endPoint = {node:pnt.node, index:pnt.index, maxIndex:pnt.maxIndex};
}
else {
var start = origSelectionRange.duplicate();
start.collapse(true);
var end = origSelectionRange.duplicate();
end.collapse(false);
selection.startPoint = pointFromCollapsedRange(start);
selection.endPoint = pointFromCollapsedRange(end);
/*if ((!selection.startPoint.node.isText) && (!selection.endPoint.node.isText)) {
console.log(selection.startPoint.node.uniqueId()+","+
selection.startPoint.index+" / "+
selection.endPoint.node.uniqueId()+","+
selection.endPoint.index);
}*/
}
return selection;
}
else {
// non-IE browser
var browserSelection = window.getSelection();
if (browserSelection && browserSelection.type != "None" &&
browserSelection.rangeCount !== 0) {
var range = browserSelection.getRangeAt(0);
function isInBody(n) {
while (n && ! (n.tagName && n.tagName.toLowerCase() == "body")) {
n = n.parentNode;
}
return !!n;
}
function pointFromRangeBound(container, offset) {
if (! isInBody(container)) {
// command-click in Firefox selects whole document, HEAD and BODY!
return {node:root, index:0, maxIndex:1};
}
var n = container;
var childCount = n.childNodes.length;
if (isNodeText(n)) {
return {node:n, index:offset, maxIndex:n.nodeValue.length};
}
else if (childCount == 0) {
return {node:n, index:0, maxIndex:1};
}
// treat point between two nodes as BEFORE the second (rather than after the first)
// if possible; this way point at end of a line block-element is treated as
// at beginning of next line
else if (offset == childCount) {
var nd = n.childNodes.item(childCount-1);
var max = nodeMaxIndex(nd);
return {node:nd, index:max, maxIndex:max};
}
else {
var nd = n.childNodes.item(offset);
var max = nodeMaxIndex(nd);
return {node:nd, index:0, maxIndex:max};
}
}
var selection = {};
selection.startPoint = pointFromRangeBound(range.startContainer, range.startOffset);
selection.endPoint = pointFromRangeBound(range.endContainer, range.endOffset);
selection.focusAtStart = (((range.startContainer != range.endContainer) ||
(range.startOffset != range.endOffset)) &&
browserSelection.anchorNode &&
(browserSelection.anchorNode == range.endContainer) &&
(browserSelection.anchorOffset == range.endOffset));
return selection;
}
else return null;
}
}
function setSelection(selection) {
function copyPoint(pt) {
return {node:pt.node, index:pt.index, maxIndex:pt.maxIndex};
}
if (browser.msie) {
// Oddly enough, accessing scrollHeight fixes return key handling on IE 8,
// presumably by forcing some kind of internal DOM update.
doc.body.scrollHeight;
function moveToElementText(s, n) {
while (n.firstChild && ! isNodeText(n.firstChild)) {
n = n.firstChild;
}
s.moveToElementText(n);
}
function newRange() {
return doc.body.createTextRange();
}
function setCollapsedBefore(s, n) {
// s is an IE TextRange, n is a dom node
if (isNodeText(n)) {
// previous node should not also be text, but prevent inf recurs
if (n.previousSibling && ! isNodeText(n.previousSibling)) {
setCollapsedAfter(s, n.previousSibling);
}
else {
setCollapsedBefore(s, n.parentNode);
}
}
else {
moveToElementText(s, n);
// work around for issue that caret at beginning of line
// somehow ends up at end of previous line
if (s.move('character', 1)) {
s.move('character', -1);
}
s.collapse(true); // to start
}
}
function setCollapsedAfter(s, n) {
// s is an IE TextRange, n is a magicdom node
if (isNodeText(n)) {
// can't use end of container when no nextSibling (could be on next line),
// so use previousSibling or start of container and move forward.
setCollapsedBefore(s, n);
s.move("character", n.nodeValue.length);
}
else {
moveToElementText(s, n);
s.collapse(false); // to end
}
}
function getPointRange(point) {
var s = newRange();
var n = point.node;
if (isNodeText(n)) {
setCollapsedBefore(s, n);
s.move("character", point.index);
}
else if (point.index == 0) {
setCollapsedBefore(s, n);
}
else {
setCollapsedAfter(s, n);
}
return s;
}
if (selection) {
if (! hasIESelection()) {
return; // don't steal focus
}
var startPoint = copyPoint(selection.startPoint);
var endPoint = copyPoint(selection.endPoint);
// fix issue where selection can't be extended past end of line
// with shift-rightarrow or shift-downarrow
if (endPoint.index == endPoint.maxIndex && endPoint.node.nextSibling) {
endPoint.node = endPoint.node.nextSibling;
endPoint.index = 0;
endPoint.maxIndex = nodeMaxIndex(endPoint.node);
}
var range = getPointRange(startPoint);
range.setEndPoint("EndToEnd", getPointRange(endPoint));
// setting the selection in IE causes everything to scroll
// so that the selection is visible. if setting the selection
// definitely accomplishes nothing, don't do it.
function isEqualToDocumentSelection(rng) {
var browserSelection;
try { browserSelection = doc.selection; } catch (e) {}
if (! browserSelection) return false;
var rng2 = browserSelection.createRange();
if (rng2.parentElement().ownerDocument != doc) return false;
if (rng.compareEndPoints("StartToStart", rng2) !== 0) return false;
if (rng.compareEndPoints("EndToEnd", rng2) !== 0) return false;
return true;
}
if (! isEqualToDocumentSelection(range)) {
//dmesg(toSource(selection));
//dmesg(escapeHTML(doc.body.innerHTML));
range.select();
}
}
else {
try { doc.selection.empty(); } catch (e) {}
}
}
else {
// non-IE browser
var isCollapsed;
function pointToRangeBound(pt) {
var p = copyPoint(pt);
// Make sure Firefox cursor is deep enough; fixes cursor jumping when at top level,
// and also problem where cut/copy of a whole line selected with fake arrow-keys
// copies the next line too.
if (isCollapsed) {
function diveDeep() {
while (p.node.childNodes.length > 0) {
//&& (p.node == root || p.node.parentNode == root)) {
if (p.index == 0) {
p.node = p.node.firstChild;
p.maxIndex = nodeMaxIndex(p.node);
}
else if (p.index == p.maxIndex) {
p.node = p.node.lastChild;
p.maxIndex = nodeMaxIndex(p.node);
p.index = p.maxIndex;
}
else break;
}
}
// now fix problem where cursor at end of text node at end of span-like element
// with background doesn't seem to show up...
if (isNodeText(p.node) && p.index == p.maxIndex) {
var n = p.node;
while ((! n.nextSibling) && (n != root) && (n.parentNode != root)) {
n = n.parentNode;
}
if (n.nextSibling &&
(! ((typeof n.nextSibling.tagName) == "string" &&
n.nextSibling.tagName.toLowerCase() == "br")) &&
(n != p.node) && (n != root) && (n.parentNode != root)) {
// found a parent, go to next node and dive in
p.node = n.nextSibling;
p.maxIndex = nodeMaxIndex(p.node);
p.index = 0;
diveDeep();
}
}
// try to make sure insertion point is styled;
// also fixes other FF problems
if (! isNodeText(p.node)) {
diveDeep();
}
}
/*// make sure Firefox cursor is shallow enough;
// to fix problem where "return" between two spans doesn't move the caret to
// the next line
// (decided against)
while (!(p.node.isRoot || p.node.parent().isRoot || p.node.parent().parent().isRoot)) {
if (p.index == 0 && ! p.node.prev()) {
p.node = p.node.parent();
p.maxIndex = 1;
}
else if (p.index == p.maxIndex && ! p.node.next()) {
p.node = p.node.parent();
p.maxIndex = 1;
p.index = 1;
}
else break;
}
if ((! p.node.isRoot) && (!p.node.parent().isRoot) &&
(p.index == p.maxIndex) && p.node.next()) {
p.node = p.node.next();
p.maxIndex = nodeMaxIndex(p.node);
p.index = 0;
}*/
if (isNodeText(p.node)) {
return { container: p.node, offset: p.index };
}
else {
// p.index in {0,1}
return { container: p.node.parentNode, offset: childIndex(p.node) + p.index };
}
}
var browserSelection = window.getSelection();
if (browserSelection) {
browserSelection.removeAllRanges();
if (selection) {
isCollapsed = (selection.startPoint.node === selection.endPoint.node &&
selection.startPoint.index === selection.endPoint.index);
var start = pointToRangeBound(selection.startPoint);
var end = pointToRangeBound(selection.endPoint);
if ((!isCollapsed) && selection.focusAtStart && browserSelection.collapse && browserSelection.extend) {
// can handle "backwards"-oriented selection, shift-arrow-keys move start
// of selection
browserSelection.collapse(end.container, end.offset);
//console.trace();
//console.log(htmlPrettyEscape(rep.alltext));
//console.log("%o %o", rep.selStart, rep.selEnd);
//console.log("%o %d", start.container, start.offset);
browserSelection.extend(start.container, start.offset);
}
else {
var range = doc.createRange();
range.setStart(start.container, start.offset);
range.setEnd(end.container, end.offset);
browserSelection.removeAllRanges();
browserSelection.addRange(range);
}
}
}
}
}
function childIndex(n) {
var idx = 0;
while (n.previousSibling) {
idx++;
n = n.previousSibling;
}
return idx;
}
function fixView() {
// calling this method repeatedly should be fast
if (getInnerWidth() == 0 || getInnerHeight() == 0) {
return;
}
function setIfNecessary(obj, prop, value) {
if (obj[prop] != value) {
obj[prop] = value;
}
}
var lineNumberWidth = sideDiv.firstChild.offsetWidth;
var newSideDivWidth = lineNumberWidth + LINE_NUMBER_PADDING_LEFT;
if (newSideDivWidth < MIN_LINEDIV_WIDTH) newSideDivWidth = MIN_LINEDIV_WIDTH;
iframePadLeft = EDIT_BODY_PADDING_LEFT;
if (hasLineNumbers) iframePadLeft += newSideDivWidth + LINE_NUMBER_PADDING_RIGHT;
setIfNecessary(iframe.style, "left", iframePadLeft+"px");
setIfNecessary(sideDiv.style, "width", newSideDivWidth+"px");
for(var i=0;i<2;i++) {
var newHeight = root.clientHeight;
var newWidth = (browser.msie ? root.createTextRange().boundingWidth : root.clientWidth);
var viewHeight = getInnerHeight() - iframePadBottom - iframePadTop;
var viewWidth = getInnerWidth() - iframePadLeft - iframePadRight;
if (newHeight < viewHeight) {
newHeight = viewHeight;
if (browser.msie) setIfNecessary(outerWin.document.documentElement.style, 'overflowY', 'auto');
}
else {
if (browser.msie) setIfNecessary(outerWin.document.documentElement.style, 'overflowY', 'scroll');
}
if (doesWrap) {
newWidth = viewWidth;
}
else {
if (newWidth < viewWidth) newWidth = viewWidth;
}
if (newHeight > 32000) newHeight = 32000;
if (newWidth > 32000) newWidth = 32000;
setIfNecessary(iframe.style, "height", newHeight+"px");
setIfNecessary(iframe.style, "width", newWidth+"px");
setIfNecessary(sideDiv.style, "height", newHeight+"px");
}
if (browser.mozilla) {
if (! doesWrap) {
// the body:display:table-cell hack makes mozilla do scrolling
// correctly by shrinking the <body> to fit around its content,
// but mozilla won't act on clicks below the body. We keep the
// style.height property set to the viewport height (editor height
// not including scrollbar), so it will never shrink so that part of
// the editor isn't clickable.
var body = root;
var styleHeight = viewHeight+"px";
setIfNecessary(body.style, "height", styleHeight);
}
else {
setIfNecessary(root.style, "height", "");
}
}
// if near edge, scroll to edge
var scrollX = getScrollX();
var scrollY = getScrollY();
var win = outerWin;
var r = 20;
/*if (scrollX <= iframePadLeft+r) win.scrollBy(-iframePadLeft-r, 0);
else if (getPageWidth() - scrollX - getInnerWidth() <= iframePadRight+r)
scrollBy(iframePadRight+r, 0);*/
/*if (scrollY <= iframePadTop+r) win.scrollBy(0, -iframePadTop-r);
else if (getPageHeight() - scrollY - getInnerHeight() <= iframePadBottom+r)
scrollBy(0, iframePadBottom+r);*/
enforceEditability();
addClass(sideDiv, 'sidedivdelayed');
}
function getScrollXY() {
var win = outerWin;
var odoc = outerWin.document;
if (typeof(win.pageYOffset) == "number") {
return {x: win.pageXOffset, y: win.pageYOffset};
}
var docel = odoc.documentElement;
if (docel && typeof(docel.scrollTop) == "number") {
return {x:docel.scrollLeft, y:docel.scrollTop};
}
}
function getScrollX() {
return getScrollXY().x;
}
function getScrollY() {
return getScrollXY().y;
}
function setScrollX(x) {
outerWin.scrollTo(x, getScrollY());
}
function setScrollY(y) {
outerWin.scrollTo(getScrollX(), y);
}
function setScrollXY(x, y) {
outerWin.scrollTo(x, y);
}
var _teardownActions = [];
function teardown() {
forEach(_teardownActions, function (a) { a(); });
}
bindEventHandler(window, "load", setup);
function setDesignMode(newVal) {
try {
function setIfNecessary(target, prop, val) {
if (String(target[prop]).toLowerCase() != val) {
target[prop] = val;
return true;
}
return false;
}
if (browser.msie || browser.safari) {
setIfNecessary(root, 'contentEditable', (newVal ? 'true' : 'false'));
}
else {
var wasSet = setIfNecessary(doc, 'designMode', (newVal ? 'on' : 'off'));
if (wasSet && newVal && browser.opera) {
// turning on designMode clears event handlers
bindTheEventHandlers();
}
}
return true;
}
catch (e) {
return false;
}
}
var iePastedLines = null;
function handleIEPaste(evt) {
// Pasting in IE loses blank lines in a way that loses information;
// "one\n\ntwo\nthree" becomes "<p>one</p><p>two</p><p>three</p>",
// which becomes "one\ntwo\nthree". We can get the correct text
// from the clipboard directly, but we still have to let the paste
// happen to get the style information.
var clipText = window.clipboardData && window.clipboardData.getData("Text");
if (clipText && doc.selection) {
// this "paste" event seems to mess with the selection whether we try to
// stop it or not, so can't really do document-level manipulation now
// or in an idle call-stack. instead, use IE native manipulation
//function escapeLine(txt) {
//return processSpaces(escapeHTML(textify(txt)));
//}
//var newHTML = map(clipText.replace(/\r/g,'').split('\n'), escapeLine).join('<br>');
//doc.selection.createRange().pasteHTML(newHTML);
//evt.preventDefault();
//iePastedLines = map(clipText.replace(/\r/g,'').split('\n'), textify);
}
}
var inInternationalComposition = false;
function handleCompositionEvent(evt) {
// international input events, fired in FF3, at least; allow e.g. Japanese input
if (evt.type == "compositionstart") {
inInternationalComposition = true;
}
else if (evt.type == "compositionend") {
inInternationalComposition = false;
}
}
/*function handleTextEvent(evt) {
top.console.log("TEXT EVENT");
inCallStackIfNecessary("handleTextEvent", function() {
observeChangesAroundSelection();
});
}*/
function bindTheEventHandlers() {
bindEventHandler(window, "unload", teardown);
bindEventHandler(document, "keydown", handleKeyEvent);
bindEventHandler(document, "keypress", handleKeyEvent);
bindEventHandler(document, "keyup", handleKeyEvent);
bindEventHandler(document, "click", handleClick);
bindEventHandler(root, "blur", handleBlur);
if (browser.msie) {
bindEventHandler(document, "click", handleIEOuterClick);
}
if (browser.msie) bindEventHandler(root, "paste", handleIEPaste);
if ((! browser.msie) && document.documentElement) {
bindEventHandler(document.documentElement, "compositionstart", handleCompositionEvent);
bindEventHandler(document.documentElement, "compositionend", handleCompositionEvent);
}
/*bindEventHandler(window, "mousemove", function(e) {
if (e.pageX < 10) {
window.DEBUG_DONT_INCORP = (e.pageX < 2);
}
});*/
}
function handleIEOuterClick(evt) {
if ((evt.target.tagName||'').toLowerCase() != "html") {
return;
}
if (!(evt.pageY > root.clientHeight)) {
return;
}
// click below the body
inCallStack("handleOuterClick", function() {
// put caret at bottom of doc
fastIncorp(11);
if (isCaret()) { // don't interfere with drag
var lastLine = rep.lines.length()-1;
var lastCol = rep.lines.atIndex(lastLine).text.length;
performSelectionChange([lastLine,lastCol],[lastLine,lastCol]);
}
});
}
function getClassArray(elem, optFilter) {
var bodyClasses = [];
(elem.className || '').replace(/\S+/g, function (c) {
if ((! optFilter) || (optFilter(c))) {
bodyClasses.push(c);
}
});
return bodyClasses;
}
function setClassArray(elem, array) {
elem.className = array.join(' ');
}
function addClass(elem, className) {
var seen = false;
var cc = getClassArray(elem, function(c) { if (c == className) seen = true; return true; });
if (! seen) {
cc.push(className);
setClassArray(elem, cc);
}
}
function removeClass(elem, className) {
var seen = false;
var cc = getClassArray(elem, function(c) {
if (c == className) { seen = true; return false; } return true; });
if (seen) {
setClassArray(elem, cc);
}
}
function setClassPresence(elem, className, present) {
if (present) addClass(elem, className);
else removeClass(elem, className);
}
function setup() {
doc = document; // defined as a var in scope outside
inCallStack("setup", function() {
var body = doc.getElementById("innerdocbody");
root = body; // defined as a var in scope outside
if (browser.mozilla) addClass(root, "mozilla");
if (browser.safari) addClass(root, "safari");
if (browser.msie) addClass(root, "msie");
if (browser.msie) {
// cache CSS background images
try {
doc.execCommand("BackgroundImageCache", false, true);
}
catch (e) {
/* throws an error in some IE 6 but not others! */
}
}
setClassPresence(root, "authorColors", true);
setClassPresence(root, "doesWrap", doesWrap);
initDynamicCSS();
enforceEditability();
// set up dom and rep
while (root.firstChild) root.removeChild(root.firstChild);
var oneEntry = createDomLineEntry("");
doRepLineSplice(0, rep.lines.length(), [oneEntry]);
insertDomLines(null, [oneEntry.domInfo], null);
rep.alines = Changeset.splitAttributionLines(
Changeset.makeAttribution("\n"), "\n");
bindTheEventHandlers();
});
scheduler.setTimeout(function() {
parent.readyFunc(); // defined in code that sets up the inner iframe
}, 0);
isSetUp = true;
}
function focus() {
window.focus();
}
function handleBlur(evt) {
if (browser.msie) {
// a fix: in IE, clicking on a control like a button outside the
// iframe can "blur" the editor, causing it to stop getting
// events, though typing still affects it(!).
setSelection(null);
}
}
function bindEventHandler(target, type, func) {
var handler;
if ((typeof func._wrapper) != "function") {
func._wrapper = function(event) {
func(fixEvent(event || window.event || {}));
}
}
var handler = func._wrapper;
if (target.addEventListener)
target.addEventListener(type, handler, false);
else
target.attachEvent("on" + type, handler);
_teardownActions.push(function() {
unbindEventHandler(target, type, func);
});
}
function unbindEventHandler(target, type, func) {
var handler = func._wrapper;
if (target.removeEventListener)
target.removeEventListener(type, handler, false);
else
target.detachEvent("on" + type, handler);
}
/*forEach(['rep', 'getCleanNodeByKey', 'getDirtyRanges', 'isNodeDirty',
'getSelection', 'setSelection', 'updateBrowserSelectionFromRep',
'makeRecentSet', 'resetProfiler', 'getScrollXY', 'makeIdleAction'], function (k) {
top['_'+k] = eval(k);
});*/
function getSelectionPointX(point) {
// doesn't work in wrap-mode
var node = point.node;
var index = point.index;
function leftOf(n) { return n.offsetLeft; }
function rightOf(n) { return n.offsetLeft + n.offsetWidth; }
if (! isNodeText(node)) {
if (index == 0) return leftOf(node);
else return rightOf(node);
}
else {
// we can get bounds of element nodes, so look for those.
// allow consecutive text nodes for robustness.
var charsToLeft = index;
var charsToRight = node.nodeValue.length - index;
var n;
for(n = node.previousSibling; n && isNodeText(n); n = n.previousSibling)
charsToLeft += n.nodeValue;
var leftEdge = (n ? rightOf(n) : leftOf(node.parentNode));
for(n = node.nextSibling; n && isNodeText(n); n = n.nextSibling)
charsToRight += n.nodeValue;
var rightEdge = (n ? leftOf(n) : rightOf(node.parentNode));
var frac = (charsToLeft / (charsToLeft + charsToRight));
var pixLoc = leftEdge + frac*(rightEdge - leftEdge);
return Math.round(pixLoc);
}
}
function getPageHeight() {
var win = outerWin;
var odoc = win.document;
if (win.innerHeight && win.scrollMaxY) return win.innerHeight + win.scrollMaxY;
else if (odoc.body.scrollHeight > odoc.body.offsetHeight) return odoc.body.scrollHeight;
else return odoc.body.offsetHeight;
}
function getPageWidth() {
var win = outerWin;
var odoc = win.document;
if (win.innerWidth && win.scrollMaxX) return win.innerWidth + win.scrollMaxX;
else if (odoc.body.scrollWidth > odoc.body.offsetWidth) return odoc.body.scrollWidth;
else return odoc.body.offsetWidth;
}
function getInnerHeight() {
var win = outerWin;
var odoc = win.document;
var h;
if (browser.opera) h = win.innerHeight;
else h = odoc.documentElement.clientHeight;
if (h) return h;
// deal with case where iframe is hidden, hope that
// style.height of iframe container is set in px
return Number(editorInfo.frame.parentNode.style.height.replace(/[^0-9]/g,'')
|| 0);
}
function getInnerWidth() {
var win = outerWin;
var odoc = win.document;
return odoc.documentElement.clientWidth;
}
function scrollNodeVerticallyIntoView(node) {
// requires element (non-text) node;
// if node extends above top of viewport or below bottom of viewport (or top of scrollbar),
// scroll it the minimum distance needed to be completely in view.
var win = outerWin;
var odoc = outerWin.document;
var distBelowTop = node.offsetTop + iframePadTop - win.scrollY;
var distAboveBottom = win.scrollY + getInnerHeight() -
(node.offsetTop +iframePadTop + node.offsetHeight);
if (distBelowTop < 0) {
win.scrollBy(0, distBelowTop);
}
else if (distAboveBottom < 0) {
win.scrollBy(0, -distAboveBottom);
}
}
function scrollXHorizontallyIntoView(pixelX) {
var win = outerWin;
var odoc = outerWin.document;
pixelX += iframePadLeft;
var distInsideLeft = pixelX - win.scrollX;
var distInsideRight = win.scrollX + getInnerWidth() - pixelX;
if (distInsideLeft < 0) {
win.scrollBy(distInsideLeft, 0);
}
else if (distInsideRight < 0) {
win.scrollBy(-distInsideRight+1, 0);
}
}
function scrollSelectionIntoView() {
if (! rep.selStart) return;
fixView();
var focusLine = (rep.selFocusAtStart ? rep.selStart[0] : rep.selEnd[0]);
scrollNodeVerticallyIntoView(rep.lines.atIndex(focusLine).lineNode);
if (! doesWrap) {
var browserSelection = getSelection();
if (browserSelection) {
var focusPoint = (browserSelection.focusAtStart ? browserSelection.startPoint :
browserSelection.endPoint);
var selectionPointX = getSelectionPointX(focusPoint);
scrollXHorizontallyIntoView(selectionPointX);
fixView();
}
}
}
function getLineListType(lineNum) {
// get "list" attribute of first char of line
var aline = rep.alines[lineNum];
if (aline) {
var opIter = Changeset.opIterator(aline);
if (opIter.hasNext()) {
return Changeset.opAttributeValue(opIter.next(), 'list', rep.apool) || '';
}
}
return '';
}
function setLineListType(lineNum, listType) {
setLineListTypes([[lineNum, listType]]);
}
function setLineListTypes(lineNumTypePairsInOrder) {
var loc = [0,0];
var builder = Changeset.builder(rep.lines.totalWidth());
for(var i=0;i<lineNumTypePairsInOrder.length;i++) {
var pair = lineNumTypePairsInOrder[i];
var lineNum = pair[0];
var listType = pair[1];
buildKeepRange(builder, loc, (loc = [lineNum,0]));
if (getLineListType(lineNum)) {
// already a line marker
if (listType) {
// make different list type
buildKeepRange(builder, loc, (loc = [lineNum,1]),
[['list',listType]], rep.apool);
}
else {
// remove list marker
buildRemoveRange(builder, loc, (loc = [lineNum,1]));
}
}
else {
// currently no line marker
if (listType) {
// add a line marker
builder.insert('*', [['author', thisAuthor],
['insertorder', 'first'],
['list', listType]], rep.apool);
}
}
}
var cs = builder.toString();
if (! Changeset.isIdentity(cs)) {
performDocumentApplyChangeset(cs);
}
}
function doInsertUnorderedList() {
if (! (rep.selStart && rep.selEnd)) {
return;
}
var firstLine, lastLine;
firstLine = rep.selStart[0];
lastLine = Math.max(firstLine,
rep.selEnd[0] - ((rep.selEnd[1] == 0) ? 1 : 0));
var allLinesAreList = true;
for(var n=firstLine;n<=lastLine;n++) {
if (! getLineListType(n)) {
allLinesAreList = false;
break;
}
}
var mods = [];
for(var n=firstLine;n<=lastLine;n++) {
var t = getLineListType(n);
mods.push([n, allLinesAreList ? '' : (t ? t : 'bullet1')]);
}
setLineListTypes(mods);
}
var mozillaFakeArrows = (browser.mozilla && (function() {
// In Firefox 2, arrow keys are unstable while DOM-manipulating
// operations are going on. Specifically, if an operation
// (computation that ties up the event queue) is going on (in the
// call-stack of some event, like a timeout) that at some point
// mutates nodes involved in the selection, then the arrow
// keypress may (randomly) move the caret to the beginning or end
// of the document. If the operation also mutates the selection
// range, the old selection or the new selection may be used, or
// neither.
// As long as the arrow is pressed during the busy operation, it
// doesn't seem to matter that the keydown and keypress events
// aren't generated until afterwards, or that the arrow movement
// can still be stopped (meaning it hasn't been performed yet);
// Firefox must be preserving some old information about the
// selection or the DOM from when the key was initially pressed.
// However, it also doesn't seem to matter when the key was
// actually pressed relative to the time of the mutation within
// the prolonged operation. Also, even in very controlled tests
// (like a mutation followed by a long period of busyWaiting), the
// problem shows up often but not every time, with no discernable
// pattern. Who knows, it could have something to do with the
// caret-blinking timer, or DOM changes not being applied
// immediately.
// This problem, mercifully, does not show up at all in IE or
// Safari. My solution is to have my own, full-featured arrow-key
// implementation for Firefox.
// Note that the problem addressed here is potentially very subtle,
// especially if the operation is quick and is timed to usually happen
// when the user is idle.
// features:
// - 'up' and 'down' arrows preserve column when passing through shorter lines
// - shift-arrows extend the "focus" point, which may be start or end of range
// - the focus point is kept horizontally and vertically scrolled into view
// - arrows without shift cause caret to move to beginning or end of selection (left,right)
// or move focus point up or down a line (up,down)
// - command-(left,right,up,down) on Mac acts like (line-start, line-end, doc-start, doc-end)
// - takes wrapping into account when doesWrap is true, i.e. up-arrow and down-arrow move
// between the virtual lines within a wrapped line; this was difficult, and unfortunately
// requires mutating the DOM to get the necessary information
var savedFocusColumn = 0; // a value of 0 has no effect
var updatingSelectionNow = false;
function getVirtualLineView(lineNum) {
var lineNode = rep.lines.atIndex(lineNum).lineNode;
while (lineNode.firstChild && isBlockElement(lineNode.firstChild)) {
lineNode = lineNode.firstChild;
}
return makeVirtualLineView(lineNode);
}
function markerlessLineAndChar(line, chr) {
return [line, chr - rep.lines.atIndex(line).lineMarker];
}
function markerfulLineAndChar(line, chr) {
return [line, chr + rep.lines.atIndex(line).lineMarker];
}
return {
notifySelectionChanged: function() {
if (! updatingSelectionNow) {
savedFocusColumn = 0;
}
},
handleKeyEvent: function(evt) {
// returns "true" if handled
if (evt.type != "keypress") return false;
var keyCode = evt.keyCode;
if (keyCode < 37 || keyCode > 40) return false;
incorporateUserChanges();
if (!(rep.selStart && rep.selEnd)) return true;
// {byWord,toEnd,normal}
var moveMode = (evt.altKey ? "byWord" :
(evt.ctrlKey ? "byWord" :
(evt.metaKey ? "toEnd" :
"normal")));
var anchorCaret =
markerlessLineAndChar(rep.selStart[0], rep.selStart[1]);
var focusCaret =
markerlessLineAndChar(rep.selEnd[0], rep.selEnd[1]);
var wasCaret = isCaret();
if (rep.selFocusAtStart) {
var tmp = anchorCaret; anchorCaret = focusCaret; focusCaret = tmp;
}
var K_UP = 38, K_DOWN = 40, K_LEFT = 37, K_RIGHT = 39;
var dontMove = false;
if (wasCaret && ! evt.shiftKey) {
// collapse, will mutate both together
anchorCaret = focusCaret;
}
else if ((! wasCaret) && (! evt.shiftKey)) {
if (keyCode == K_LEFT) {
// place caret at beginning
if (rep.selFocusAtStart) anchorCaret = focusCaret;
else focusCaret = anchorCaret;
if (moveMode == "normal") dontMove = true;
}
else if (keyCode == K_RIGHT) {
// place caret at end
if (rep.selFocusAtStart) focusCaret = anchorCaret;
else anchorCaret = focusCaret;
if (moveMode == "normal") dontMove = true;
}
else {
// collapse, will mutate both together
anchorCaret = focusCaret;
}
}
if (! dontMove) {
function lineLength(i) {
var entry = rep.lines.atIndex(i);
return entry.text.length - entry.lineMarker;
}
function lineText(i) {
var entry = rep.lines.atIndex(i);
return entry.text.substring(entry.lineMarker);
}
if (keyCode == K_UP || keyCode == K_DOWN) {
var up = (keyCode == K_UP);
var canChangeLines = ((up && focusCaret[0]) ||
((!up) && focusCaret[0] < rep.lines.length()-1));
var virtualLineView, virtualLineSpot, canChangeVirtualLines = false;
if (doesWrap) {
virtualLineView = getVirtualLineView(focusCaret[0]);
virtualLineSpot = virtualLineView.getVLineAndOffsetForChar(focusCaret[1]);
canChangeVirtualLines = ((up && virtualLineSpot.vline > 0) ||
((!up) && virtualLineSpot.vline < (
virtualLineView.getNumVirtualLines() - 1)));
}
var newColByVirtualLineChange;
if (moveMode == "toEnd") {
if (up) {
focusCaret[0] = 0;
focusCaret[1] = 0;
}
else {
focusCaret[0] = rep.lines.length()-1;
focusCaret[1] = lineLength(focusCaret[0]);
}
}
else if (moveMode == "byWord") {
// move by "paragraph", a feature that Firefox lacks but IE and Safari both have
if (up) {
if (focusCaret[1] == 0 && canChangeLines) {
focusCaret[0]--;
focusCaret[1] = 0;
}
else focusCaret[1] = 0;
}
else {
var lineLen = lineLength(focusCaret[0]);
if (browser.windows) {
if (canChangeLines) {
focusCaret[0]++;
focusCaret[1] = 0;
}
else {
focusCaret[1] = lineLen;
}
}
else {
if (focusCaret[1] == lineLen && canChangeLines) {
focusCaret[0]++;
focusCaret[1] = lineLength(focusCaret[0]);
}
else {
focusCaret[1] = lineLen;
}
}
}
savedFocusColumn = 0;
}
else if (canChangeVirtualLines) {
var vline = virtualLineSpot.vline;
var offset = virtualLineSpot.offset;
if (up) vline--;
else vline++;
if (savedFocusColumn > offset) offset = savedFocusColumn;
else {
savedFocusColumn = offset;
}
var newSpot = virtualLineView.getCharForVLineAndOffset(vline, offset);
focusCaret[1] = newSpot.lineChar;
}
else if (canChangeLines) {
if (up) focusCaret[0]--;
else focusCaret[0]++;
var offset = focusCaret[1];
if (doesWrap) {
offset = virtualLineSpot.offset;
}
if (savedFocusColumn > offset) offset = savedFocusColumn;
else {
savedFocusColumn = offset;
}
if (doesWrap) {
var newLineView = getVirtualLineView(focusCaret[0]);
var vline = (up ? newLineView.getNumVirtualLines()-1 : 0);
var newSpot = newLineView.getCharForVLineAndOffset(vline, offset);
focusCaret[1] = newSpot.lineChar;
}
else {
var lineLen = lineLength(focusCaret[0]);
if (offset > lineLen) offset = lineLen;
focusCaret[1] = offset;
}
}
else {
if (up) focusCaret[1] = 0;
else focusCaret[1] = lineLength(focusCaret[0]);
savedFocusColumn = 0;
}
}
else if (keyCode == K_LEFT || keyCode == K_RIGHT) {
var left = (keyCode == K_LEFT);
if (left) {
if (moveMode == "toEnd") focusCaret[1] = 0;
else if (focusCaret[1] > 0) {
if (moveMode == "byWord") {
focusCaret[1] = moveByWordInLine(lineText(focusCaret[0]), focusCaret[1], false);
}
else {
focusCaret[1]--;
}
}
else if (focusCaret[0] > 0) {
focusCaret[0]--;
focusCaret[1] = lineLength(focusCaret[0]);
if (moveMode == "byWord") {
focusCaret[1] = moveByWordInLine(lineText(focusCaret[0]), focusCaret[1], false);
}
}
}
else {
var lineLen = lineLength(focusCaret[0]);
if (moveMode == "toEnd") focusCaret[1] = lineLen;
else if (focusCaret[1] < lineLen) {
if (moveMode == "byWord") {
focusCaret[1] = moveByWordInLine(lineText(focusCaret[0]), focusCaret[1], true);
}
else {
focusCaret[1]++;
}
}
else if (focusCaret[0] < rep.lines.length()-1) {
focusCaret[0]++;
focusCaret[1] = 0;
if (moveMode == "byWord") {
focusCaret[1] = moveByWordInLine(lineText(focusCaret[0]), focusCaret[1], true);
}
}
}
savedFocusColumn = 0;
}
}
var newSelFocusAtStart = ((focusCaret[0] < anchorCaret[0]) ||
(focusCaret[0] == anchorCaret[0] &&
focusCaret[1] < anchorCaret[1]));
var newSelStart = (newSelFocusAtStart ? focusCaret : anchorCaret);
var newSelEnd = (newSelFocusAtStart ? anchorCaret : focusCaret);
updatingSelectionNow = true;
performSelectionChange(markerfulLineAndChar(newSelStart[0],
newSelStart[1]),
markerfulLineAndChar(newSelEnd[0],
newSelEnd[1]),
newSelFocusAtStart);
updatingSelectionNow = false;
currentCallStack.userChangedSelection = true;
return true;
}
};
})());
// stolen from jquery-1.2.1
function fixEvent(event) {
// store a copy of the original event object
// and clone to set read-only properties
var originalEvent = event;
event = extend({}, originalEvent);
// add preventDefault and stopPropagation since
// they will not work on the clone
event.preventDefault = function() {
// if preventDefault exists run it on the original event
if (originalEvent.preventDefault)
originalEvent.preventDefault();
// otherwise set the returnValue property of the original event to false (IE)
originalEvent.returnValue = false;
};
event.stopPropagation = function() {
// if stopPropagation exists run it on the original event
if (originalEvent.stopPropagation)
originalEvent.stopPropagation();
// otherwise set the cancelBubble property of the original event to true (IE)
originalEvent.cancelBubble = true;
};
// Fix target property, if necessary
if ( !event.target && event.srcElement )
event.target = event.srcElement;
// check if target is a textnode (safari)
if (browser.safari && event.target.nodeType == 3)
event.target = originalEvent.target.parentNode;
// Add relatedTarget, if necessary
if ( !event.relatedTarget && event.fromElement )
event.relatedTarget = event.fromElement == event.target ? event.toElement : event.fromElement;
// Calculate pageX/Y if missing and clientX/Y available
if ( event.pageX == null && event.clientX != null ) {
var e = document.documentElement, b = document.body;
event.pageX = event.clientX + (e && e.scrollLeft || b.scrollLeft || 0);
event.pageY = event.clientY + (e && e.scrollTop || b.scrollTop || 0);
}
// Add which for key events
if ( !event.which && (event.charCode || event.keyCode) )
event.which = event.charCode || event.keyCode;
// Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs)
if ( !event.metaKey && event.ctrlKey )
event.metaKey = event.ctrlKey;
// Add which for click: 1 == left; 2 == middle; 3 == right
// Note: button is not normalized, so don't use it
if ( !event.which && event.button )
event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) ));
return event;
}
var lineNumbersShown;
var sideDivInner;
function initLineNumbers() {
lineNumbersShown = 1;
sideDiv.innerHTML =
'<table border="0" cellpadding="0" cellspacing="0" align="right">'+
'<tr><td id="sidedivinner"><div>1</div></td></tr></table>';
sideDivInner = outerWin.document.getElementById("sidedivinner");
}
function updateLineNumbers() {
var newNumLines = rep.lines.length();
if (newNumLines < 1) newNumLines = 1;
if (newNumLines != lineNumbersShown) {
var container = sideDivInner;
var odoc = outerWin.document;
while (lineNumbersShown < newNumLines) {
lineNumbersShown++;
var n = lineNumbersShown;
var div = odoc.createElement("DIV");
div.appendChild(odoc.createTextNode(String(n)));
container.appendChild(div);
}
while (lineNumbersShown > newNumLines) {
container.removeChild(container.lastChild);
lineNumbersShown--;
}
}
if (currentCallStack && currentCallStack.domClean) {
var a = sideDivInner.firstChild;
var b = doc.body.firstChild;
while (a && b) {
var h = (b.clientHeight || b.offsetHeight);
if (b.nextSibling) {
// when text is zoomed in mozilla, divs have fractional
// heights (though the properties are always integers)
// and the line-numbers don't line up unless we pay
// attention to where the divs are actually placed...
// (also: padding on TTs/SPANs in IE...)
h = b.nextSibling.offsetTop - b.offsetTop;
}
if (h) {
var hpx = h+"px";
if (a.style.height != hpx)
a.style.height = hpx;
}
a = a.nextSibling;
b = b.nextSibling;
}
}
}
};
OUTER(this);
