The contentcollector code is harder to adapt since it has the Changeset module as a dependency
This commit is contained in:
Lorenzo Gil Sanchez
parent
fd056cf09c
commit
09cb367d8e
1 changed files with 692 additions and 0 deletions
692
node/utils/contentcollector.js
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692
node/utils/contentcollector.js
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// THIS FILE IS ALSO AN APPJET MODULE: etherpad.collab.ace.contentcollector
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// %APPJET%: import("etherpad.collab.ace.easysync2.Changeset");
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// %APPJET%: import("etherpad.admin.plugins");
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/**
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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 Changeset = require("../utils/Changeset");
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var _MAX_LIST_LEVEL = 8;
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function sanitizeUnicode(s)
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{
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return s.replace(/[\uffff\ufffe\ufeff\ufdd0-\ufdef\ud800-\udfff]/g, '?');
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}
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function makeContentCollector(collectStyles, browser, apool, domInterface, className2Author)
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{
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browser = browser || {};
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var plugins_;
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if (typeof(plugins) != 'undefined')
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{
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plugins_ = plugins;
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}
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else
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{
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plugins_ = {callHook: function () {}};
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}
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var dom = domInterface || {
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isNodeText: function(n)
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{
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return (n.nodeType == 3);
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},
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nodeTagName: function(n)
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{
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return n.tagName;
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},
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nodeValue: function(n)
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{
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return n.nodeValue;
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},
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nodeNumChildren: function(n)
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{
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return n.childNodes.length;
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},
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nodeChild: function(n, i)
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{
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return n.childNodes.item(i);
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},
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nodeProp: function(n, p)
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{
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return n[p];
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},
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nodeAttr: function(n, a)
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{
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return n.getAttribute(a);
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},
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optNodeInnerHTML: function(n)
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{
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return n.innerHTML;
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}
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};
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var _blockElems = {
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"div": 1,
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"p": 1,
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"pre": 1,
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"li": 1
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};
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function isBlockElement(n)
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{
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return !!_blockElems[(dom.nodeTagName(n) || "").toLowerCase()];
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}
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function textify(str)
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{
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return sanitizeUnicode(
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str.replace(/[\n\r ]/g, ' ').replace(/\xa0/g, ' ').replace(/\t/g, ' '));
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}
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function getAssoc(node, name)
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{
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return dom.nodeProp(node, "_magicdom_" + name);
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}
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var lines = (function()
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{
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var textArray = [];
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var attribsArray = [];
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var attribsBuilder = null;
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var op = Changeset.newOp('+');
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var self = {
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length: function()
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{
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return textArray.length;
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},
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atColumnZero: function()
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{
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return textArray[textArray.length - 1] === "";
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},
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startNew: function()
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{
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textArray.push("");
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self.flush(true);
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attribsBuilder = Changeset.smartOpAssembler();
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},
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textOfLine: function(i)
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{
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return textArray[i];
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},
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appendText: function(txt, attrString)
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{
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textArray[textArray.length - 1] += txt;
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//dmesg(txt+" / "+attrString);
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op.attribs = attrString;
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op.chars = txt.length;
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attribsBuilder.append(op);
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},
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textLines: function()
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{
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return textArray.slice();
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},
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attribLines: function()
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{
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return attribsArray;
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},
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// call flush only when you're done
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flush: function(withNewline)
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{
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if (attribsBuilder)
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{
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attribsArray.push(attribsBuilder.toString());
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attribsBuilder = null;
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}
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}
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};
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self.startNew();
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return self;
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}());
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var cc = {};
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function _ensureColumnZero(state)
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{
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if (!lines.atColumnZero())
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{
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cc.startNewLine(state);
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}
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}
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var selection, startPoint, endPoint;
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var selStart = [-1, -1],
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selEnd = [-1, -1];
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var blockElems = {
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"div": 1,
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"p": 1,
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"pre": 1
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};
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function _isEmpty(node, state)
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{
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// consider clean blank lines pasted in IE to be empty
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if (dom.nodeNumChildren(node) == 0) return true;
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if (dom.nodeNumChildren(node) == 1 && getAssoc(node, "shouldBeEmpty") && dom.optNodeInnerHTML(node) == " " && !getAssoc(node, "unpasted"))
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{
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if (state)
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{
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var child = dom.nodeChild(node, 0);
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_reachPoint(child, 0, state);
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_reachPoint(child, 1, state);
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}
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return true;
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}
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return false;
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}
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function _pointHere(charsAfter, state)
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{
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var ln = lines.length() - 1;
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var chr = lines.textOfLine(ln).length;
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if (chr == 0 && state.listType && state.listType != 'none')
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{
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chr += 1; // listMarker
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}
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chr += charsAfter;
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return [ln, chr];
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}
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function _reachBlockPoint(nd, idx, state)
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{
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if (!dom.isNodeText(nd)) _reachPoint(nd, idx, state);
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}
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function _reachPoint(nd, idx, state)
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{
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if (startPoint && nd == startPoint.node && startPoint.index == idx)
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{
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selStart = _pointHere(0, state);
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}
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if (endPoint && nd == endPoint.node && endPoint.index == idx)
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{
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selEnd = _pointHere(0, state);
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}
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}
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cc.incrementFlag = function(state, flagName)
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{
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state.flags[flagName] = (state.flags[flagName] || 0) + 1;
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}
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cc.decrementFlag = function(state, flagName)
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{
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state.flags[flagName]--;
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}
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cc.incrementAttrib = function(state, attribName)
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{
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if (!state.attribs[attribName])
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{
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state.attribs[attribName] = 1;
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}
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else
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{
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state.attribs[attribName]++;
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}
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_recalcAttribString(state);
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}
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cc.decrementAttrib = function(state, attribName)
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{
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state.attribs[attribName]--;
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_recalcAttribString(state);
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}
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function _enterList(state, listType)
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{
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var oldListType = state.listType;
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state.listLevel = (state.listLevel || 0) + 1;
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if (listType != 'none')
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{
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state.listNesting = (state.listNesting || 0) + 1;
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}
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state.listType = listType;
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_recalcAttribString(state);
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return oldListType;
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}
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function _exitList(state, oldListType)
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{
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state.listLevel--;
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if (state.listType != 'none')
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{
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state.listNesting--;
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}
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state.listType = oldListType;
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_recalcAttribString(state);
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}
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function _enterAuthor(state, author)
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{
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var oldAuthor = state.author;
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state.authorLevel = (state.authorLevel || 0) + 1;
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state.author = author;
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_recalcAttribString(state);
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return oldAuthor;
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}
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function _exitAuthor(state, oldAuthor)
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{
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state.authorLevel--;
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state.author = oldAuthor;
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_recalcAttribString(state);
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}
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function _recalcAttribString(state)
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{
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var lst = [];
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for (var a in state.attribs)
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{
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if (state.attribs[a])
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{
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lst.push([a, 'true']);
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}
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}
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if (state.authorLevel > 0)
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{
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var authorAttrib = ['author', state.author];
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if (apool.putAttrib(authorAttrib, true) >= 0)
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{
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// require that author already be in pool
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// (don't add authors from other documents, etc.)
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lst.push(authorAttrib);
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}
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}
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state.attribString = Changeset.makeAttribsString('+', lst, apool);
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}
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function _produceListMarker(state)
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{
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lines.appendText('*', Changeset.makeAttribsString('+', [
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['list', state.listType],
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['insertorder', 'first']
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], apool));
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}
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cc.startNewLine = function(state)
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{
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if (state)
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{
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var atBeginningOfLine = lines.textOfLine(lines.length() - 1).length == 0;
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if (atBeginningOfLine && state.listType && state.listType != 'none')
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{
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_produceListMarker(state);
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}
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}
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lines.startNew();
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}
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cc.notifySelection = function(sel)
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{
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if (sel)
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{
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selection = sel;
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startPoint = selection.startPoint;
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endPoint = selection.endPoint;
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}
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};
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cc.doAttrib = function(state, na)
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{
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state.localAttribs = (state.localAttribs || []);
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state.localAttribs.push(na);
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cc.incrementAttrib(state, na);
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};
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cc.collectContent = function(node, state)
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{
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if (!state)
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{
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state = {
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flags: { /*name -> nesting counter*/
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},
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localAttribs: null,
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attribs: { /*name -> nesting counter*/
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},
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attribString: ''
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};
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}
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var localAttribs = state.localAttribs;
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state.localAttribs = null;
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var isBlock = isBlockElement(node);
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var isEmpty = _isEmpty(node, state);
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if (isBlock) _ensureColumnZero(state);
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var startLine = lines.length() - 1;
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_reachBlockPoint(node, 0, state);
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if (dom.isNodeText(node))
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{
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var txt = dom.nodeValue(node);
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var rest = '';
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var x = 0; // offset into original text
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if (txt.length == 0)
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{
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if (startPoint && node == startPoint.node)
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{
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selStart = _pointHere(0, state);
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}
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if (endPoint && node == endPoint.node)
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{
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selEnd = _pointHere(0, state);
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}
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}
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while (txt.length > 0)
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{
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var consumed = 0;
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if (state.flags.preMode)
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{
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var firstLine = txt.split('\n', 1)[0];
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consumed = firstLine.length + 1;
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rest = txt.substring(consumed);
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txt = firstLine;
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}
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else
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{ /* will only run this loop body once */
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}
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if (startPoint && node == startPoint.node && startPoint.index - x <= txt.length)
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{
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selStart = _pointHere(startPoint.index - x, state);
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}
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if (endPoint && node == endPoint.node && endPoint.index - x <= txt.length)
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{
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selEnd = _pointHere(endPoint.index - x, state);
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}
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var txt2 = txt;
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if ((!state.flags.preMode) && /^[\r\n]*$/.exec(txt))
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{
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// prevents textnodes containing just "\n" from being significant
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// in safari when pasting text, now that we convert them to
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// spaces instead of removing them, because in other cases
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// removing "\n" from pasted HTML will collapse words together.
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txt2 = "";
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}
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var atBeginningOfLine = lines.textOfLine(lines.length() - 1).length == 0;
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if (atBeginningOfLine)
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{
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// newlines in the source mustn't become spaces at beginning of line box
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txt2 = txt2.replace(/^\n*/, '');
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}
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if (atBeginningOfLine && state.listType && state.listType != 'none')
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{
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_produceListMarker(state);
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}
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lines.appendText(textify(txt2), state.attribString);
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x += consumed;
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txt = rest;
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if (txt.length > 0)
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{
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cc.startNewLine(state);
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}
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}
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}
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else
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{
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var tname = (dom.nodeTagName(node) || "").toLowerCase();
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if (tname == "br")
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{
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cc.startNewLine(state);
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}
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else if (tname == "script" || tname == "style")
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{
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// ignore
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}
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else if (!isEmpty)
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{
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var styl = dom.nodeAttr(node, "style");
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var cls = dom.nodeProp(node, "className");
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var isPre = (tname == "pre");
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if ((!isPre) && browser.safari)
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{
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isPre = (styl && /\bwhite-space:\s*pre\b/i.exec(styl));
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}
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if (isPre) cc.incrementFlag(state, 'preMode');
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var oldListTypeOrNull = null;
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var oldAuthorOrNull = null;
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if (collectStyles)
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{
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plugins_.callHook('collectContentPre', {
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cc: cc,
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state: state,
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tname: tname,
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styl: styl,
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cls: cls
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});
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if (tname == "b" || (styl && /\bfont-weight:\s*bold\b/i.exec(styl)) || tname == "strong")
|
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{
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cc.doAttrib(state, "bold");
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}
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if (tname == "i" || (styl && /\bfont-style:\s*italic\b/i.exec(styl)) || tname == "em")
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{
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cc.doAttrib(state, "italic");
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}
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if (tname == "u" || (styl && /\btext-decoration:\s*underline\b/i.exec(styl)) || tname == "ins")
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{
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cc.doAttrib(state, "underline");
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}
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if (tname == "s" || (styl && /\btext-decoration:\s*line-through\b/i.exec(styl)) || tname == "del")
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{
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cc.doAttrib(state, "strikethrough");
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}
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if (tname == "ul")
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{
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var type;
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var rr = cls && /(?:^| )list-(bullet[12345678])\b/.exec(cls);
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type = rr && rr[1] || "bullet" + String(Math.min(_MAX_LIST_LEVEL, (state.listNesting || 0) + 1));
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oldListTypeOrNull = (_enterList(state, type) || 'none');
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}
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else if ((tname == "div" || tname == "p") && cls && cls.match(/(?:^| )ace-line\b/))
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{
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oldListTypeOrNull = (_enterList(state, type) || 'none');
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}
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if (className2Author && cls)
|
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{
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var classes = cls.match(/\S+/g);
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if (classes && classes.length > 0)
|
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{
|
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for (var i = 0; i < classes.length; i++)
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{
|
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var c = classes[i];
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var a = className2Author(c);
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if (a)
|
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{
|
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oldAuthorOrNull = (_enterAuthor(state, a) || 'none');
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break;
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}
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||||
}
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}
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}
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}
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var nc = dom.nodeNumChildren(node);
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for (var i = 0; i < nc; i++)
|
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{
|
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var c = dom.nodeChild(node, i);
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cc.collectContent(c, state);
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}
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if (collectStyles)
|
||||
{
|
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plugins_.callHook('collectContentPost', {
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cc: cc,
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state: state,
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tname: tname,
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styl: styl,
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cls: cls
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||||
});
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}
|
||||
|
||||
if (isPre) cc.decrementFlag(state, 'preMode');
|
||||
if (state.localAttribs)
|
||||
{
|
||||
for (var i = 0; i < state.localAttribs.length; i++)
|
||||
{
|
||||
cc.decrementAttrib(state, state.localAttribs[i]);
|
||||
}
|
||||
}
|
||||
if (oldListTypeOrNull)
|
||||
{
|
||||
_exitList(state, oldListTypeOrNull);
|
||||
}
|
||||
if (oldAuthorOrNull)
|
||||
{
|
||||
_exitAuthor(state, oldAuthorOrNull);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (!browser.msie)
|
||||
{
|
||||
_reachBlockPoint(node, 1, state);
|
||||
}
|
||||
if (isBlock)
|
||||
{
|
||||
if (lines.length() - 1 == startLine)
|
||||
{
|
||||
cc.startNewLine(state);
|
||||
}
|
||||
else
|
||||
{
|
||||
_ensureColumnZero(state);
|
||||
}
|
||||
}
|
||||
|
||||
if (browser.msie)
|
||||
{
|
||||
// in IE, a point immediately after a DIV appears on the next line
|
||||
_reachBlockPoint(node, 1, state);
|
||||
}
|
||||
|
||||
state.localAttribs = localAttribs;
|
||||
};
|
||||
// can pass a falsy value for end of doc
|
||||
cc.notifyNextNode = function(node)
|
||||
{
|
||||
// an "empty block" won't end a line; this addresses an issue in IE with
|
||||
// typing into a blank line at the end of the document. typed text
|
||||
// goes into the body, and the empty line div still looks clean.
|
||||
// it is incorporated as dirty by the rule that a dirty region has
|
||||
// to end a line.
|
||||
if ((!node) || (isBlockElement(node) && !_isEmpty(node)))
|
||||
{
|
||||
_ensureColumnZero(null);
|
||||
}
|
||||
};
|
||||
// each returns [line, char] or [-1,-1]
|
||||
var getSelectionStart = function()
|
||||
{
|
||||
return selStart;
|
||||
};
|
||||
var getSelectionEnd = function()
|
||||
{
|
||||
return selEnd;
|
||||
};
|
||||
|
||||
// returns array of strings for lines found, last entry will be "" if
|
||||
// last line is complete (i.e. if a following span should be on a new line).
|
||||
// can be called at any point
|
||||
cc.getLines = function()
|
||||
{
|
||||
return lines.textLines();
|
||||
};
|
||||
|
||||
cc.finish = function()
|
||||
{
|
||||
lines.flush();
|
||||
var lineAttribs = lines.attribLines();
|
||||
var lineStrings = cc.getLines();
|
||||
|
||||
lineStrings.length--;
|
||||
lineAttribs.length--;
|
||||
|
||||
var ss = getSelectionStart();
|
||||
var se = getSelectionEnd();
|
||||
|
||||
function fixLongLines()
|
||||
{
|
||||
// design mode does not deal with with really long lines!
|
||||
var lineLimit = 2000; // chars
|
||||
var buffer = 10; // chars allowed over before wrapping
|
||||
var linesWrapped = 0;
|
||||
var numLinesAfter = 0;
|
||||
for (var i = lineStrings.length - 1; i >= 0; i--)
|
||||
{
|
||||
var oldString = lineStrings[i];
|
||||
var oldAttribString = lineAttribs[i];
|
||||
if (oldString.length > lineLimit + buffer)
|
||||
{
|
||||
var newStrings = [];
|
||||
var newAttribStrings = [];
|
||||
while (oldString.length > lineLimit)
|
||||
{
|
||||
//var semiloc = oldString.lastIndexOf(';', lineLimit-1);
|
||||
//var lengthToTake = (semiloc >= 0 ? (semiloc+1) : lineLimit);
|
||||
lengthToTake = lineLimit;
|
||||
newStrings.push(oldString.substring(0, lengthToTake));
|
||||
oldString = oldString.substring(lengthToTake);
|
||||
newAttribStrings.push(Changeset.subattribution(oldAttribString, 0, lengthToTake));
|
||||
oldAttribString = Changeset.subattribution(oldAttribString, lengthToTake);
|
||||
}
|
||||
if (oldString.length > 0)
|
||||
{
|
||||
newStrings.push(oldString);
|
||||
newAttribStrings.push(oldAttribString);
|
||||
}
|
||||
|
||||
function fixLineNumber(lineChar)
|
||||
{
|
||||
if (lineChar[0] < 0) return;
|
||||
var n = lineChar[0];
|
||||
var c = lineChar[1];
|
||||
if (n > i)
|
||||
{
|
||||
n += (newStrings.length - 1);
|
||||
}
|
||||
else if (n == i)
|
||||
{
|
||||
var a = 0;
|
||||
while (c > newStrings[a].length)
|
||||
{
|
||||
c -= newStrings[a].length;
|
||||
a++;
|
||||
}
|
||||
n += a;
|
||||
}
|
||||
lineChar[0] = n;
|
||||
lineChar[1] = c;
|
||||
}
|
||||
fixLineNumber(ss);
|
||||
fixLineNumber(se);
|
||||
linesWrapped++;
|
||||
numLinesAfter += newStrings.length;
|
||||
|
||||
newStrings.unshift(i, 1);
|
||||
lineStrings.splice.apply(lineStrings, newStrings);
|
||||
newAttribStrings.unshift(i, 1);
|
||||
lineAttribs.splice.apply(lineAttribs, newAttribStrings);
|
||||
}
|
||||
}
|
||||
return {
|
||||
linesWrapped: linesWrapped,
|
||||
numLinesAfter: numLinesAfter
|
||||
};
|
||||
}
|
||||
var wrapData = fixLongLines();
|
||||
|
||||
return {
|
||||
selStart: ss,
|
||||
selEnd: se,
|
||||
linesWrapped: wrapData.linesWrapped,
|
||||
numLinesAfter: wrapData.numLinesAfter,
|
||||
lines: lineStrings,
|
||||
lineAttribs: lineAttribs
|
||||
};
|
||||
}
|
||||
|
||||
return cc;
|
||||
}
|
||||
|
||||
exports.makeContentCollector = makeContentCollector;
|
||||
Loading…
Reference in a new issue