mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/WikiEditor
synced 2024-11-15 03:35:58 +00:00
440 lines
11 KiB
JavaScript
440 lines
11 KiB
JavaScript
// THIS FILE HAS BEEN MODIFIED for use with the mediawiki wikiEditor
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// It no longer requires etherpad.collab.ace.easysync2.Changeset
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// THIS FILE WAS ORIGINALLY AN APPJET MODULE: etherpad.collab.ace.contentcollector
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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"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* 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( browser, domInterface ) {
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browser = browser || {};
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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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try {
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return n.nodeValue;
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} catch ( err ) {
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return '';
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}
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},
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nodeName : function(n) {
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return n.nodeName;
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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 = {
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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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return !!_blockElems[(dom.nodeTagName(n) || "").toLowerCase()];
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}
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function textify(str) {
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return sanitizeUnicode(str.replace(/[\n\r ]/g, ' ').replace(/\xa0/g,
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' ').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 self = {
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length : function() {
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return textArray.length;
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},
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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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},
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textOfLine : function(i) {
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return textArray[i];
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},
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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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},
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textLines : function() {
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return textArray.slice();
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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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};
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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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_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 = {
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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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// consider clean blank lines pasted in IE to be empty
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if (dom.nodeNumChildren(node) == 0)
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return true;
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if (dom.nodeNumChildren(node) == 1 && getAssoc(node, "shouldBeEmpty")
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&& 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))
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_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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function _incrementFlag(state, flagName) {
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state.flags[flagName] = (state.flags[flagName] || 0) + 1;
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}
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function _decrementFlag(state, flagName) {
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state.flags[flagName]--;
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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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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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}
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function _produceListMarker(state) {
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}
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function _startNewLine(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.collectContent = function(node, state) {
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if (!state) {
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state = {
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flags : {/* name -> nesting counter */}
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};
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}
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var isBlock = isBlockElement(node);
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var isEmpty = _isEmpty(node, state);
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if (isBlock)
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_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 (!browser.firefox || 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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} else { /* will only run this loop body once */
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}
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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
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// 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
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// 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
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// of line box
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txt2 = txt2.replace(/^\n*/, '');
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}
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if (atBeginningOfLine && state.listType
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&& state.listType != 'none') {
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_produceListMarker(state);
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}
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lines.appendText(textify(txt2));
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x += consumed;
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txt = rest;
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if (txt.length > 0) {
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_startNewLine(state);
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}
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}
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} else {
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var cls = dom.nodeProp(node, "className");
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var tname = (dom.nodeTagName(node) || "").toLowerCase();
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if (tname == "br") {
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_startNewLine(state);
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} else if (tname == "script" || tname == "style") {
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// ignore
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} else if (!isEmpty) {
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var styl = dom.nodeAttr(node, "style");
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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)
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_incrementFlag(state, 'preMode');
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var oldListTypeOrNull = null;
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var nc = dom.nodeNumChildren(node);
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for ( var i = 0; i < nc; i++) {
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var c = dom.nodeChild(node, i);
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//very specific IE case where it inserts <span lang="en"> which we want to ginore.
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//to reproduce copy content from wordpad andpaste into the middle of a line in IE
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if ( browser.msie && cls.indexOf('wikiEditor') >= 0 && dom.nodeName(c) == 'SPAN' && dom.nodeAttr(c, 'lang') == "" ) {
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continue;
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}
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cc.collectContent(c, state);
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}
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if (isPre)
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_decrementFlag(state, 'preMode');
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if (oldListTypeOrNull) {
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_exitList(state, oldListTypeOrNull);
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}
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}
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}
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if (!browser.msie) {
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_reachBlockPoint(node, 1, state);
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}
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if (isBlock) {
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if (lines.length() - 1 == startLine) {
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_startNewLine(state);
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} else {
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_ensureColumnZero(state);
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}
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}
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if (browser.msie) {
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// in IE, a point immediately after a DIV appears on the next line
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//_reachBlockPoint(node, 1, state);
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}
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};
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// can pass a falsy value for end of doc
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cc.notifyNextNode = function(node) {
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// an "empty block" won't end a line; this addresses an issue in IE with
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// typing into a blank line at the end of the document. typed text
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// goes into the body, and the empty line div still looks clean.
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// it is incorporated as dirty by the rule that a dirty region has
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// to end a line.
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if ((!node) || (isBlockElement(node) && !_isEmpty(node))) {
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_ensureColumnZero(null);
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}
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};
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// each returns [line, char] or [-1,-1]
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var getSelectionStart = function() {
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return selStart;
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};
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var getSelectionEnd = function() {
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return selEnd;
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};
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// returns array of strings for lines found, last entry will be "" if
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// last line is complete (i.e. if a following span should be on a new line).
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// can be called at any point
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cc.getLines = function() {
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return lines.textLines();
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};
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// cc.applyHints = function(hints) {
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// if (hints.pastedLines) {
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//
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// }
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// }
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cc.finish = function() {
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lines.flush();
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var lineStrings = cc.getLines();
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if ( lineStrings.length > 0 && !lineStrings[lineStrings.length - 1] ) {
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lineStrings.length--;
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}
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var ss = getSelectionStart();
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var se = getSelectionEnd();
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function fixLongLines() {
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// design mode does not deal with with really long lines!
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var lineLimit = 2000; // chars
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var buffer = 10; // chars allowed over before wrapping
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var linesWrapped = 0;
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var numLinesAfter = 0;
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for ( var i = lineStrings.length - 1; i >= 0; i--) {
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var oldString = lineStrings[i];
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if (oldString.length > lineLimit + buffer) {
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var newStrings = [];
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while (oldString.length > lineLimit) {
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// var semiloc = oldString.lastIndexOf(';',
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// lineLimit-1);
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// var lengthToTake = (semiloc >= 0 ? (semiloc+1) :
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// lineLimit);
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lengthToTake = lineLimit;
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newStrings.push(oldString.substring(0, lengthToTake));
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oldString = oldString.substring(lengthToTake);
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}
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if (oldString.length > 0) {
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newStrings.push(oldString);
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}
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function fixLineNumber(lineChar) {
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if (lineChar[0] < 0)
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return;
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var n = lineChar[0];
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var c = lineChar[1];
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if (n > i) {
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n += (newStrings.length - 1);
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} else if (n == i) {
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var a = 0;
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while (c > newStrings[a].length) {
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c -= newStrings[a].length;
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a++;
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}
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n += a;
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}
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lineChar[0] = n;
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lineChar[1] = c;
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}
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fixLineNumber(ss);
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fixLineNumber(se);
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linesWrapped++;
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numLinesAfter += newStrings.length;
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newStrings.unshift(i, 1);
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lineStrings.splice.apply(lineStrings, newStrings);
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}
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}
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return {
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linesWrapped : linesWrapped,
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numLinesAfter : numLinesAfter
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};
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}
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var wrapData = fixLongLines();
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return {
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selStart : ss,
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selEnd : se,
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linesWrapped : wrapData.linesWrapped,
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numLinesAfter : wrapData.numLinesAfter,
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lines : lineStrings
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};
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};
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return cc;
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}
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