755 lines
22 KiB
JavaScript
755 lines
22 KiB
JavaScript
/**
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* Copyright 2009 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var global = this;
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function loadBroadcastJS()
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{
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// just in case... (todo: this must be somewhere else in the client code.)
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// Below Array#map code was direct pasted by AppJet/Etherpad, licence unknown. Possible source: http://www.tutorialspoint.com/javascript/array_map.htm
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if (!Array.prototype.map)
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{
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Array.prototype.map = function(fun /*, thisp*/ )
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{
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var len = this.length >>> 0;
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if (typeof fun != "function") throw new TypeError();
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var res = new Array(len);
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var thisp = arguments[1];
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for (var i = 0; i < len; i++)
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{
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if (i in this) res[i] = fun.call(thisp, this[i], i, this);
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}
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return res;
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};
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}
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// Below Array#forEach code was direct pasted by AppJet/Etherpad, licence unknown. Possible source: http://www.tutorialspoint.com/javascript/array_foreach.htm
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if (!Array.prototype.forEach)
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{
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Array.prototype.forEach = function(fun /*, thisp*/ )
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{
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var len = this.length >>> 0;
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if (typeof fun != "function") throw new TypeError();
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var thisp = arguments[1];
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for (var i = 0; i < len; i++)
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{
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if (i in this) fun.call(thisp, this[i], i, this);
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}
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};
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}
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// Below Array#indexOf code was direct pasted by AppJet/Etherpad, licence unknown. Possible source: http://www.tutorialspoint.com/javascript/array_indexof.htm
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if (!Array.prototype.indexOf)
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{
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Array.prototype.indexOf = function(elt /*, from*/ )
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{
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var len = this.length >>> 0;
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var from = Number(arguments[1]) || 0;
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from = (from < 0) ? Math.ceil(from) : Math.floor(from);
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if (from < 0) from += len;
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for (; from < len; from++)
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{
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if (from in this && this[from] === elt) return from;
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}
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return -1;
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};
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}
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function debugLog()
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{
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try
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{
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if (window.console) console.log.apply(console, arguments);
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}
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catch (e)
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{
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if (window.console) console.log("error printing: ", e);
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}
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}
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function randomString()
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{
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return "_" + Math.floor(Math.random() * 1000000);
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}
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// for IE
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if ($.browser.msie)
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{
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try
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{
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document.execCommand("BackgroundImageCache", false, true);
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}
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catch (e)
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{}
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}
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var userId = "hiddenUser" + randomString();
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var socketId;
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//var socket;
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var channelState = "DISCONNECTED";
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var appLevelDisconnectReason = null;
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var padContents = {
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currentRevision: clientVars.revNum,
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currentTime: clientVars.currentTime,
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currentLines: Changeset.splitTextLines(clientVars.initialStyledContents.atext.text),
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currentDivs: null,
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// to be filled in once the dom loads
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apool: (new AttribPool()).fromJsonable(clientVars.initialStyledContents.apool),
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alines: Changeset.splitAttributionLines(
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clientVars.initialStyledContents.atext.attribs, clientVars.initialStyledContents.atext.text),
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// generates a jquery element containing HTML for a line
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lineToElement: function(line, aline)
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{
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var element = document.createElement("div");
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var emptyLine = (line == '\n');
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var domInfo = domline.createDomLine(!emptyLine, true);
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linestylefilter.populateDomLine(line, aline, this.apool, domInfo);
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domInfo.prepareForAdd();
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element.className = domInfo.node.className;
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element.innerHTML = domInfo.node.innerHTML;
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element.id = Math.random();
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return $(element);
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},
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applySpliceToDivs: function(start, numRemoved, newLines)
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{
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// remove spliced-out lines from DOM
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for (var i = start; i < start + numRemoved && i < this.currentDivs.length; i++)
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{
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debugLog("removing", this.currentDivs[i].attr('id'));
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this.currentDivs[i].remove();
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}
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// remove spliced-out line divs from currentDivs array
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this.currentDivs.splice(start, numRemoved);
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var newDivs = [];
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for (var i = 0; i < newLines.length; i++)
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{
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newDivs.push(this.lineToElement(newLines[i], this.alines[start + i]));
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}
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// grab the div just before the first one
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var startDiv = this.currentDivs[start - 1] || null;
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// insert the div elements into the correct place, in the correct order
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for (var i = 0; i < newDivs.length; i++)
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{
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if (startDiv)
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{
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startDiv.after(newDivs[i]);
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}
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else
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{
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$("#padcontent").prepend(newDivs[i]);
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}
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startDiv = newDivs[i];
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}
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// insert new divs into currentDivs array
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newDivs.unshift(0); // remove 0 elements
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newDivs.unshift(start);
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this.currentDivs.splice.apply(this.currentDivs, newDivs);
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return this;
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},
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// splice the lines
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splice: function(start, numRemoved, newLinesVA)
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{
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var newLines = Array.prototype.slice.call(arguments, 2).map(
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function(s)
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{
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return s;
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});
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// apply this splice to the divs
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this.applySpliceToDivs(start, numRemoved, newLines);
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// call currentLines.splice, to keep the currentLines array up to date
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newLines.unshift(numRemoved);
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newLines.unshift(start);
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this.currentLines.splice.apply(this.currentLines, arguments);
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},
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// returns the contents of the specified line I
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get: function(i)
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{
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return this.currentLines[i];
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},
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// returns the number of lines in the document
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length: function()
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{
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return this.currentLines.length;
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},
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getActiveAuthors: function()
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{
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var self = this;
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var authors = [];
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var seenNums = {};
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var alines = self.alines;
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for (var i = 0; i < alines.length; i++)
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{
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Changeset.eachAttribNumber(alines[i], function(n)
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{
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if (!seenNums[n])
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{
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seenNums[n] = true;
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if (self.apool.getAttribKey(n) == 'author')
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{
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var a = self.apool.getAttribValue(n);
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if (a)
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{
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authors.push(a);
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}
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}
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}
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});
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}
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authors.sort();
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return authors;
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}
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};
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function callCatchingErrors(catcher, func)
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{
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try
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{
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wrapRecordingErrors(catcher, func)();
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}
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catch (e)
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{ /*absorb*/
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}
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}
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function wrapRecordingErrors(catcher, func)
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{
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return function()
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{
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try
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{
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return func.apply(this, Array.prototype.slice.call(arguments));
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}
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catch (e)
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{
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// caughtErrors.push(e);
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// caughtErrorCatchers.push(catcher);
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// caughtErrorTimes.push(+new Date());
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// console.dir({catcher: catcher, e: e});
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debugLog(e); // TODO(kroo): added temporary, to catch errors
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throw e;
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}
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};
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}
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function loadedNewChangeset(changesetForward, changesetBackward, revision, timeDelta)
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{
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var broadcasting = (BroadcastSlider.getSliderPosition() == revisionInfo.latest);
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debugLog("broadcasting:", broadcasting, BroadcastSlider.getSliderPosition(), revisionInfo.latest, revision);
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revisionInfo.addChangeset(revision, revision + 1, changesetForward, changesetBackward, timeDelta);
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BroadcastSlider.setSliderLength(revisionInfo.latest);
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if (broadcasting) applyChangeset(changesetForward, revision + 1, false, timeDelta);
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}
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/*
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At this point, we must be certain that the changeset really does map from
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the current revision to the specified revision. Any mistakes here will
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cause the whole slider to get out of sync.
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*/
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function applyChangeset(changeset, revision, preventSliderMovement, timeDelta)
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{
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// disable the next 'gotorevision' call handled by a timeslider update
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if (!preventSliderMovement)
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{
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goToRevisionIfEnabledCount++;
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BroadcastSlider.setSliderPosition(revision);
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}
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try
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{
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// must mutate attribution lines before text lines
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Changeset.mutateAttributionLines(changeset, padContents.alines, padContents.apool);
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}
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catch (e)
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{
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debugLog(e);
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}
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Changeset.mutateTextLines(changeset, padContents);
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padContents.currentRevision = revision;
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padContents.currentTime += timeDelta * 1000;
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debugLog('Time Delta: ', timeDelta)
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updateTimer();
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BroadcastSlider.setAuthors(padContents.getActiveAuthors().map(function(name)
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{
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return authorData[name];
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}));
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}
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function updateTimer()
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{
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var zpad = function(str, length)
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{
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str = str + "";
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while (str.length < length)
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str = '0' + str;
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return str;
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}
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var date = new Date(padContents.currentTime);
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var dateFormat = function()
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{
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var month = zpad(date.getMonth() + 1, 2);
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var day = zpad(date.getDate(), 2);
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var year = (date.getFullYear());
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var hours = zpad(date.getHours(), 2);
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var minutes = zpad(date.getMinutes(), 2);
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var seconds = zpad(date.getSeconds(), 2);
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return ([month, '/', day, '/', year, ' ', hours, ':', minutes, ':', seconds].join(""));
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}
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$('#timer').html(dateFormat());
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var revisionDate = ["Saved", ["Jan", "Feb", "March", "April", "May", "June", "July", "Aug", "Sept", "Oct", "Nov", "Dec"][date.getMonth()], date.getDate() + ",", date.getFullYear()].join(" ")
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$('#revision_date').html(revisionDate)
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}
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updateTimer();
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function goToRevision(newRevision)
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{
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padContents.targetRevision = newRevision;
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var self = this;
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var path = revisionInfo.getPath(padContents.currentRevision, newRevision);
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debugLog('newRev: ', padContents.currentRevision, path);
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if (path.status == 'complete')
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{
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var cs = path.changesets;
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debugLog("status: complete, changesets: ", cs, "path:", path);
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var changeset = cs[0];
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var timeDelta = path.times[0];
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for (var i = 1; i < cs.length; i++)
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{
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changeset = Changeset.compose(changeset, cs[i], padContents.apool);
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timeDelta += path.times[i];
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}
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if (changeset) applyChangeset(changeset, path.rev, true, timeDelta);
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}
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else if (path.status == "partial")
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{
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debugLog('partial');
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var sliderLocation = padContents.currentRevision;
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// callback is called after changeset information is pulled from server
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// this may never get called, if the changeset has already been loaded
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var update = function(start, end)
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{
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// if we've called goToRevision in the time since, don't goToRevision
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goToRevision(padContents.targetRevision);
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};
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// do our best with what we have...
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var cs = path.changesets;
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var changeset = cs[0];
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var timeDelta = path.times[0];
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for (var i = 1; i < cs.length; i++)
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{
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changeset = Changeset.compose(changeset, cs[i], padContents.apool);
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timeDelta += path.times[i];
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}
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if (changeset) applyChangeset(changeset, path.rev, true, timeDelta);
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if (BroadcastSlider.getSliderLength() > 10000)
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{
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var start = (Math.floor((newRevision) / 10000) * 10000); // revision 0 to 10
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changesetLoader.queueUp(start, 100);
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}
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if (BroadcastSlider.getSliderLength() > 1000)
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{
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var start = (Math.floor((newRevision) / 1000) * 1000); // (start from -1, go to 19) + 1
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changesetLoader.queueUp(start, 10);
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}
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start = (Math.floor((newRevision) / 100) * 100);
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changesetLoader.queueUp(start, 1, update);
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}
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BroadcastSlider.setAuthors(padContents.getActiveAuthors().map(function(name)
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{
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return authorData[name];
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}));
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}
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global.changesetLoader = {
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running: false,
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resolved: [],
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requestQueue1: [],
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requestQueue2: [],
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requestQueue3: [],
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reqCallbacks: [],
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queueUp: function(revision, width, callback)
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{
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if (revision < 0) revision = 0;
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// if(changesetLoader.requestQueue.indexOf(revision) != -1)
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// return; // already in the queue.
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if (changesetLoader.resolved.indexOf(revision + "_" + width) != -1) return; // already loaded from the server
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changesetLoader.resolved.push(revision + "_" + width);
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var requestQueue = width == 1 ? changesetLoader.requestQueue3 : width == 10 ? changesetLoader.requestQueue2 : changesetLoader.requestQueue1;
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requestQueue.push(
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{
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'rev': revision,
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'res': width,
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'callback': callback
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});
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if (!changesetLoader.running)
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{
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changesetLoader.running = true;
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setTimeout(changesetLoader.loadFromQueue, 10);
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}
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},
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loadFromQueue: function()
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{
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var self = changesetLoader;
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var requestQueue = self.requestQueue1.length > 0 ? self.requestQueue1 : self.requestQueue2.length > 0 ? self.requestQueue2 : self.requestQueue3.length > 0 ? self.requestQueue3 : null;
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if (!requestQueue)
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{
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self.running = false;
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return;
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}
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var request = requestQueue.pop();
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var granularity = request.res;
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var callback = request.callback;
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var start = request.rev;
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var requestID = Math.floor(Math.random() * 100000);
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/*var msg = { "component" : "timeslider",
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"type":"CHANGESET_REQ",
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"padId": padId,
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"token": token,
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"protocolVersion": 2,
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"data"
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{
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"start": start,
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"granularity": granularity
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}};
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socket.send(msg);*/
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sendSocketMsg("CHANGESET_REQ", {
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"start": start,
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"granularity": granularity,
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"requestID": requestID
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});
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self.reqCallbacks[requestID] = callback;
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/*debugLog("loadinging revision", start, "through ajax");
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$.getJSON("/ep/pad/changes/" + clientVars.padIdForUrl + "?s=" + start + "&g=" + granularity, function (data, textStatus)
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{
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if (textStatus !== "success")
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{
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console.log(textStatus);
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BroadcastSlider.showReconnectUI();
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}
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self.handleResponse(data, start, granularity, callback);
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setTimeout(self.loadFromQueue, 10); // load the next ajax function
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});*/
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},
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handleSocketResponse: function(message)
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{
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var self = changesetLoader;
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var start = message.data.start;
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var granularity = message.data.granularity;
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var callback = self.reqCallbacks[message.data.requestID];
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delete self.reqCallbacks[message.data.requestID];
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self.handleResponse(message.data, start, granularity, callback);
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setTimeout(self.loadFromQueue, 10);
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},
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handleResponse: function(data, start, granularity, callback)
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{
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debugLog("response: ", data);
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var pool = (new AttribPool()).fromJsonable(data.apool);
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for (var i = 0; i < data.forwardsChangesets.length; i++)
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{
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var astart = start + i * granularity - 1; // rev -1 is a blank single line
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var aend = start + (i + 1) * granularity - 1; // totalRevs is the most recent revision
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if (aend > data.actualEndNum - 1) aend = data.actualEndNum - 1;
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debugLog("adding changeset:", astart, aend);
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var forwardcs = Changeset.moveOpsToNewPool(data.forwardsChangesets[i], pool, padContents.apool);
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var backwardcs = Changeset.moveOpsToNewPool(data.backwardsChangesets[i], pool, padContents.apool);
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revisionInfo.addChangeset(astart, aend, forwardcs, backwardcs, data.timeDeltas[i]);
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}
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if (callback) callback(start - 1, start + data.forwardsChangesets.length * granularity - 1);
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}
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};
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function handleMessageFromServer()
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{
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debugLog("handleMessage:", arguments);
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var obj = arguments[0]['data'];
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var expectedType = "COLLABROOM";
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obj = JSON.parse(obj);
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if (obj['type'] == expectedType)
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{
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obj = obj['data'];
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if (obj['type'] == "NEW_CHANGES")
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{
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debugLog(obj);
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var changeset = Changeset.moveOpsToNewPool(
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obj.changeset, (new AttribPool()).fromJsonable(obj.apool), padContents.apool);
|
|
|
|
var changesetBack = Changeset.moveOpsToNewPool(
|
|
obj.changesetBack, (new AttribPool()).fromJsonable(obj.apool), padContents.apool);
|
|
|
|
loadedNewChangeset(changeset, changesetBack, obj.newRev - 1, obj.timeDelta);
|
|
}
|
|
else if (obj['type'] == "NEW_AUTHORDATA")
|
|
{
|
|
var authorMap = {};
|
|
authorMap[obj.author] = obj.data;
|
|
receiveAuthorData(authorMap);
|
|
BroadcastSlider.setAuthors(padContents.getActiveAuthors().map(function(name)
|
|
{
|
|
return authorData[name];
|
|
}));
|
|
}
|
|
else if (obj['type'] == "NEW_SAVEDREV")
|
|
{
|
|
var savedRev = obj.savedRev;
|
|
BroadcastSlider.addSavedRevision(savedRev.revNum, savedRev);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
debugLog("incorrect message type: " + obj['type'] + ", expected " + expectedType);
|
|
}
|
|
}
|
|
|
|
function handleSocketClosed(params)
|
|
{
|
|
debugLog("socket closed!", params);
|
|
socket = null;
|
|
|
|
BroadcastSlider.showReconnectUI();
|
|
// var reason = appLevelDisconnectReason || params.reason;
|
|
// var shouldReconnect = params.reconnect;
|
|
// if (shouldReconnect) {
|
|
// // determine if this is a tight reconnect loop due to weird connectivity problems
|
|
// // reconnectTimes.push(+new Date());
|
|
// var TOO_MANY_RECONNECTS = 8;
|
|
// var TOO_SHORT_A_TIME_MS = 10000;
|
|
// if (reconnectTimes.length >= TOO_MANY_RECONNECTS &&
|
|
// ((+new Date()) - reconnectTimes[reconnectTimes.length-TOO_MANY_RECONNECTS]) <
|
|
// TOO_SHORT_A_TIME_MS) {
|
|
// setChannelState("DISCONNECTED", "looping");
|
|
// }
|
|
// else {
|
|
// setChannelState("RECONNECTING", reason);
|
|
// setUpSocket();
|
|
// }
|
|
// }
|
|
// else {
|
|
// BroadcastSlider.showReconnectUI();
|
|
// setChannelState("DISCONNECTED", reason);
|
|
// }
|
|
}
|
|
|
|
function sendMessage(msg)
|
|
{
|
|
socket.postMessage(JSON.stringify(
|
|
{
|
|
type: "COLLABROOM",
|
|
data: msg
|
|
}));
|
|
}
|
|
|
|
/*function setUpSocket()
|
|
{
|
|
// required for Comet
|
|
if ((!$.browser.msie) && (!($.browser.mozilla && $.browser.version.indexOf("1.8.") == 0)))
|
|
{
|
|
document.domain = document.domain; // for comet
|
|
}
|
|
|
|
var success = false;
|
|
callCatchingErrors("setUpSocket", function ()
|
|
{
|
|
appLevelDisconnectReason = null;
|
|
|
|
socketId = String(Math.floor(Math.random() * 1e12));
|
|
socket = new WebSocket(socketId);
|
|
socket.onmessage = wrapRecordingErrors("socket.onmessage", handleMessageFromServer);
|
|
socket.onclosed = wrapRecordingErrors("socket.onclosed", handleSocketClosed);
|
|
socket.onopen = wrapRecordingErrors("socket.onopen", function ()
|
|
{
|
|
setChannelState("CONNECTED");
|
|
var msg = {
|
|
type: "CLIENT_READY",
|
|
roomType: 'padview',
|
|
roomName: 'padview/' + clientVars.viewId,
|
|
data: {
|
|
lastRev: clientVars.revNum,
|
|
userInfo: {
|
|
userId: userId
|
|
}
|
|
}
|
|
};
|
|
sendMessage(msg);
|
|
});
|
|
// socket.onhiccup = wrapRecordingErrors("socket.onhiccup", handleCometHiccup);
|
|
// socket.onlogmessage = function(x) {debugLog(x); };
|
|
socket.connect();
|
|
success = true;
|
|
});
|
|
if (success)
|
|
{
|
|
//initialStartConnectTime = +new Date();
|
|
}
|
|
else
|
|
{
|
|
abandonConnection("initsocketfail");
|
|
}
|
|
}*/
|
|
|
|
function setChannelState(newChannelState, moreInfo)
|
|
{
|
|
if (newChannelState != channelState)
|
|
{
|
|
channelState = newChannelState;
|
|
// callbacks.onChannelStateChange(channelState, moreInfo);
|
|
}
|
|
}
|
|
|
|
function abandonConnection(reason)
|
|
{
|
|
if (socket)
|
|
{
|
|
socket.onclosed = function()
|
|
{};
|
|
socket.onhiccup = function()
|
|
{};
|
|
socket.disconnect();
|
|
}
|
|
socket = null;
|
|
setChannelState("DISCONNECTED", reason);
|
|
}
|
|
|
|
/*window['onloadFuncts'] = [];
|
|
window.onload = function ()
|
|
{
|
|
window['isloaded'] = true;
|
|
window['onloadFuncts'].forEach(function (funct)
|
|
{
|
|
funct();
|
|
});
|
|
};*/
|
|
|
|
// to start upon window load, just push a function onto this array
|
|
//window['onloadFuncts'].push(setUpSocket);
|
|
//window['onloadFuncts'].push(function ()
|
|
fireWhenAllScriptsAreLoaded.push(function()
|
|
{
|
|
// set up the currentDivs and DOM
|
|
padContents.currentDivs = [];
|
|
$("#padcontent").html("");
|
|
for (var i = 0; i < padContents.currentLines.length; i++)
|
|
{
|
|
var div = padContents.lineToElement(padContents.currentLines[i], padContents.alines[i]);
|
|
padContents.currentDivs.push(div);
|
|
$("#padcontent").append(div);
|
|
}
|
|
debugLog(padContents.currentDivs);
|
|
});
|
|
|
|
// this is necessary to keep infinite loops of events firing,
|
|
// since goToRevision changes the slider position
|
|
var goToRevisionIfEnabledCount = 0;
|
|
var goToRevisionIfEnabled = function()
|
|
{
|
|
if (goToRevisionIfEnabledCount > 0)
|
|
{
|
|
goToRevisionIfEnabledCount--;
|
|
}
|
|
else
|
|
{
|
|
goToRevision.apply(goToRevision, arguments);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
BroadcastSlider.onSlider(goToRevisionIfEnabled);
|
|
|
|
(function()
|
|
{
|
|
for (var i = 0; i < clientVars.initialChangesets.length; i++)
|
|
{
|
|
var csgroup = clientVars.initialChangesets[i];
|
|
var start = clientVars.initialChangesets[i].start;
|
|
var granularity = clientVars.initialChangesets[i].granularity;
|
|
debugLog("loading changest on startup: ", start, granularity, csgroup);
|
|
changesetLoader.handleResponse(csgroup, start, granularity, null);
|
|
}
|
|
})();
|
|
|
|
var dynamicCSS = makeCSSManager('dynamicsyntax');
|
|
var authorData = {};
|
|
|
|
function receiveAuthorData(newAuthorData)
|
|
{
|
|
for (var author in newAuthorData)
|
|
{
|
|
var data = newAuthorData[author];
|
|
var bgcolor = typeof data.colorId == "number" ? clientVars.colorPalette[data.colorId] : data.colorId;
|
|
if (bgcolor && dynamicCSS)
|
|
{
|
|
dynamicCSS.selectorStyle('.' + linestylefilter.getAuthorClassName(author)).backgroundColor = bgcolor;
|
|
}
|
|
authorData[author] = data;
|
|
}
|
|
}
|
|
|
|
receiveAuthorData(clientVars.historicalAuthorData);
|
|
}
|