521 lines
16 KiB
JavaScript
521 lines
16 KiB
JavaScript
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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 _MAX_LIST_LEVEL = 8;
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function sanitizeUnicode(s) {
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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,
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className2Author) {
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browser = browser || {};
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var plugins_;
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if (typeof(plugins)!='undefined') {
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plugins_ = plugins;
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} else {
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plugins_ = parent.parent.plugins;
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}
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var dom = domInterface || {
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isNodeText: function(n) {
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return (n.nodeType == 3);
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},
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nodeTagName: function(n) {
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return n.tagName;
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},
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nodeValue: function(n) {
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return n.nodeValue;
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},
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nodeNumChildren: function(n) {
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return n.childNodes.length;
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},
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nodeChild: function(n, i) {
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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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return n[p];
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},
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nodeAttr: function(n, a) {
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return n.getAttribute(a);
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},
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optNodeInnerHTML: function(n) {
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return n.innerHTML;
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}
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};
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var _blockElems = { "div":1, "p":1, "pre":1, "li":1 };
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function isBlockElement(n) {
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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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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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return dom.nodeProp(node, "_magicdom_"+name);
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}
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var lines = (function() {
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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() { return textArray.length; },
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atColumnZero: function() {
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return textArray[textArray.length-1] === "";
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},
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startNew: function() {
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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) { return textArray[i]; },
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appendText: function(txt, attrString) {
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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() { return textArray.slice(); },
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attribLines: function() { return attribsArray; },
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// call flush only when you're done
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flush: function(withNewline) {
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if (attribsBuilder) {
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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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if (! lines.atColumnZero()) {
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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], selEnd = [-1,-1];
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var blockElems = { "div":1, "p":1, "pre":1 };
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function _isEmpty(node, state) {
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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 &&
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getAssoc(node, "shouldBeEmpty") && dom.optNodeInnerHTML(node) == " "
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&& ! getAssoc(node, "unpasted")) {
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if (state) {
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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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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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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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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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if (startPoint && nd == startPoint.node && startPoint.index == idx) {
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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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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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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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state.flags[flagName]--;
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}
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cc.incrementAttrib = function(state, attribName) {
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if (! state.attribs[attribName]) {
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state.attribs[attribName] = 1;
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}
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else {
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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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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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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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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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state.listLevel--;
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if (state.listType != 'none') {
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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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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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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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var lst = [];
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for(var a in state.attribs) {
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if (state.attribs[a]) {
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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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var authorAttrib = ['author', state.author];
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if (apool.putAttrib(authorAttrib, true) >= 0) {
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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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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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if (state) {
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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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_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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if (sel) {
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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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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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if (! state) {
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state = {flags: {/*name -> nesting counter*/},
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localAttribs: null,
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attribs: {/*name -> nesting counter*/},
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attribString: ''};
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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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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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if (startPoint && node == startPoint.node) {
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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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selEnd = _pointHere(0, state);
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}
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}
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while (txt.length > 0) {
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var consumed = 0;
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if (state.flags.preMode) {
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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 { /* will only run this loop body once */ }
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if (startPoint && node == startPoint.node &&
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startPoint.index-x <= txt.length) {
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selStart = _pointHere(startPoint.index-x, state);
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}
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if (endPoint && node == endPoint.node &&
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endPoint.index-x <= txt.length) {
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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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// 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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// 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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_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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cc.startNewLine(state);
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}
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}
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}
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else {
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var tname = (dom.nodeTagName(node) || "").toLowerCase();
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if (tname == "br") {
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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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// ignore
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}
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else if (! isEmpty) {
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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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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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plugins_.callHook('collectContentPre', {cc: cc, state:state, tname:tname, styl:styl, cls:cls});
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if (tname == "b" || (styl && /\bfont-weight:\s*bold\b/i.exec(styl)) ||
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tname == "strong") {
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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)) ||
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tname == "em") {
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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)) ||
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tname == "ins") {
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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)) ||
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tname == "del") {
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cc.doAttrib(state, "strikethrough");
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}
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if (tname == "ul") {
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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"+
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String(Math.min(_MAX_LIST_LEVEL, (state.listNesting||0)+1));
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oldListTypeOrNull = (_enterList(state, type) || 'none');
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}
|
||
|
|
else if ((tname == "div" || tname == "p") && cls &&
|
||
|
|
cls.match(/(?:^| )ace-line\b/)) {
|
||
|
|
oldListTypeOrNull = (_enterList(state, type) || 'none');
|
||
|
|
}
|
||
|
|
if (className2Author && cls) {
|
||
|
|
var classes = cls.match(/\S+/g);
|
||
|
|
if (classes && classes.length > 0) {
|
||
|
|
for(var i=0;i<classes.length;i++) {
|
||
|
|
var c = classes[i];
|
||
|
|
var a = className2Author(c);
|
||
|
|
if (a) {
|
||
|
|
oldAuthorOrNull = (_enterAuthor(state, a) || 'none');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var nc = dom.nodeNumChildren(node);
|
||
|
|
for(var i=0;i<nc;i++) {
|
||
|
|
var c = dom.nodeChild(node, i);
|
||
|
|
cc.collectContent(c, state);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (collectStyles) {
|
||
|
|
plugins_.callHook('collectContentPost', {cc: cc, state:state, tname:tname, styl:styl, cls:cls});
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|