554 lines
15 KiB
JavaScript
554 lines
15 KiB
JavaScript
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define("dijit/_editor/range", [
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"dojo/_base/array", // array.every
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"dojo/_base/declare", // declare
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"dojo/_base/lang", // lang.isArray
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"dojo/_base/window", // win.global
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".." // for exporting symbols to dijit, TODO: remove in 2.0
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], function(array, declare, lang, win, dijit){
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// module:
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// dijit/_editor/range
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// summary:
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// W3C range API
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dijit.range={};
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dijit.range.getIndex = function(/*DomNode*/node, /*DomNode*/parent){
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// dojo.profile.start("dijit.range.getIndex");
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var ret = [], retR = [];
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var onode = node;
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var pnode, n;
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while(node != parent){
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var i = 0;
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pnode = node.parentNode;
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while((n = pnode.childNodes[i++])){
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if(n === node){
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--i;
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break;
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}
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}
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//if(i>=pnode.childNodes.length){
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//dojo.debug("Error finding index of a node in dijit.range.getIndex");
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//}
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ret.unshift(i);
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retR.unshift(i - pnode.childNodes.length);
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node = pnode;
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}
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//normalized() can not be called so often to prevent
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//invalidating selection/range, so we have to detect
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//here that any text nodes in a row
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if(ret.length > 0 && onode.nodeType == 3){
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n = onode.previousSibling;
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while(n && n.nodeType == 3){
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ret[ret.length - 1]--;
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n = n.previousSibling;
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}
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n = onode.nextSibling;
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while(n && n.nodeType == 3){
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retR[retR.length - 1]++;
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n = n.nextSibling;
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}
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}
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// dojo.profile.end("dijit.range.getIndex");
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return {o: ret, r:retR};
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};
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dijit.range.getNode = function(/*Array*/index, /*DomNode*/parent){
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if(!lang.isArray(index) || index.length == 0){
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return parent;
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}
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var node = parent;
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// if(!node)debugger
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array.every(index, function(i){
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if(i >= 0 && i < node.childNodes.length){
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node = node.childNodes[i];
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}else{
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node = null;
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//console.debug('Error: can not find node with index',index,'under parent node',parent );
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return false; //terminate array.every
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}
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return true; //carry on the every loop
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});
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return node;
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};
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dijit.range.getCommonAncestor = function(n1, n2, root){
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root = root || n1.ownerDocument.body;
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var getAncestors = function(n){
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var as = [];
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while(n){
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as.unshift(n);
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if(n !== root){
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n = n.parentNode;
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}else{
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break;
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}
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}
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return as;
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};
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var n1as = getAncestors(n1);
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var n2as = getAncestors(n2);
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var m = Math.min(n1as.length, n2as.length);
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var com = n1as[0]; //at least, one element should be in the array: the root (BODY by default)
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for(var i = 1; i < m; i++){
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if(n1as[i] === n2as[i]){
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com = n1as[i]
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}else{
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break;
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}
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}
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return com;
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};
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dijit.range.getAncestor = function(/*DomNode*/node, /*RegEx?*/regex, /*DomNode?*/root){
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root = root || node.ownerDocument.body;
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while(node && node !== root){
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var name = node.nodeName.toUpperCase();
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if(regex.test(name)){
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return node;
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}
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node = node.parentNode;
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}
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return null;
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};
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dijit.range.BlockTagNames = /^(?:P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|OL|UL|LI|DT|DE)$/;
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dijit.range.getBlockAncestor = function(/*DomNode*/node, /*RegEx?*/regex, /*DomNode?*/root){
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root = root || node.ownerDocument.body;
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regex = regex || dijit.range.BlockTagNames;
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var block = null, blockContainer;
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while(node && node !== root){
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var name = node.nodeName.toUpperCase();
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if(!block && regex.test(name)){
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block = node;
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}
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if(!blockContainer && (/^(?:BODY|TD|TH|CAPTION)$/).test(name)){
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blockContainer = node;
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}
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node = node.parentNode;
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}
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return {blockNode:block, blockContainer:blockContainer || node.ownerDocument.body};
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};
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dijit.range.atBeginningOfContainer = function(/*DomNode*/container, /*DomNode*/node, /*Int*/offset){
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var atBeginning = false;
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var offsetAtBeginning = (offset == 0);
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if(!offsetAtBeginning && node.nodeType == 3){ //if this is a text node, check whether the left part is all space
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if(/^[\s\xA0]+$/.test(node.nodeValue.substr(0, offset))){
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offsetAtBeginning = true;
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}
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}
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if(offsetAtBeginning){
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var cnode = node;
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atBeginning = true;
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while(cnode && cnode !== container){
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if(cnode.previousSibling){
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atBeginning = false;
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break;
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}
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cnode = cnode.parentNode;
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}
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}
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return atBeginning;
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};
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dijit.range.atEndOfContainer = function(/*DomNode*/container, /*DomNode*/node, /*Int*/offset){
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var atEnd = false;
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var offsetAtEnd = (offset == (node.length || node.childNodes.length));
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if(!offsetAtEnd && node.nodeType == 3){ //if this is a text node, check whether the right part is all space
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if(/^[\s\xA0]+$/.test(node.nodeValue.substr(offset))){
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offsetAtEnd = true;
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}
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}
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if(offsetAtEnd){
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var cnode = node;
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atEnd = true;
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while(cnode && cnode !== container){
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if(cnode.nextSibling){
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atEnd = false;
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break;
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}
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cnode = cnode.parentNode;
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}
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}
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return atEnd;
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};
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dijit.range.adjacentNoneTextNode = function(startnode, next){
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var node = startnode;
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var len = (0 - startnode.length) || 0;
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var prop = next ? 'nextSibling' : 'previousSibling';
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while(node){
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if(node.nodeType != 3){
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break;
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}
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len += node.length;
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node = node[prop];
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}
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return [node,len];
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};
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dijit.range._w3c = Boolean(window['getSelection']);
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dijit.range.create = function(/*Window?*/window){
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if(dijit.range._w3c){
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return (window || win.global).document.createRange();
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}else{//IE
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return new dijit.range.W3CRange;
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}
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};
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dijit.range.getSelection = function(/*Window*/win, /*Boolean?*/ignoreUpdate){
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if(dijit.range._w3c){
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return win.getSelection();
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}else{//IE
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var s = new dijit.range.ie.selection(win);
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if(!ignoreUpdate){
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s._getCurrentSelection();
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}
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return s;
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}
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};
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if(!dijit.range._w3c){
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dijit.range.ie = {
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cachedSelection: {},
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selection: function(win){
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this._ranges = [];
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this.addRange = function(r, /*boolean*/internal){
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this._ranges.push(r);
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if(!internal){
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r._select();
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}
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this.rangeCount = this._ranges.length;
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};
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this.removeAllRanges = function(){
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//don't detach, the range may be used later
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// for(var i=0;i<this._ranges.length;i++){
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// this._ranges[i].detach();
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// }
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this._ranges = [];
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this.rangeCount = 0;
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};
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var _initCurrentRange = function(){
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var r = win.document.selection.createRange();
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var type = win.document.selection.type.toUpperCase();
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if(type == "CONTROL"){
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//TODO: multiple range selection(?)
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return new dijit.range.W3CRange(dijit.range.ie.decomposeControlRange(r));
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}else{
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return new dijit.range.W3CRange(dijit.range.ie.decomposeTextRange(r));
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}
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};
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this.getRangeAt = function(i){
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return this._ranges[i];
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};
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this._getCurrentSelection = function(){
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this.removeAllRanges();
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var r = _initCurrentRange();
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if(r){
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this.addRange(r, true);
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this.isCollapsed = r.collapsed;
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}else{
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this.isCollapsed = true;
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}
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};
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},
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decomposeControlRange: function(range){
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var firstnode = range.item(0), lastnode = range.item(range.length - 1);
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var startContainer = firstnode.parentNode, endContainer = lastnode.parentNode;
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var startOffset = dijit.range.getIndex(firstnode, startContainer).o[0];
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var endOffset = dijit.range.getIndex(lastnode, endContainer).o[0] + 1;
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return [startContainer, startOffset,endContainer, endOffset];
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},
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getEndPoint: function(range, end){
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var atmrange = range.duplicate();
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atmrange.collapse(!end);
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var cmpstr = 'EndTo' + (end ? 'End' : 'Start');
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var parentNode = atmrange.parentElement();
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var startnode, startOffset, lastNode;
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if(parentNode.childNodes.length > 0){
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array.every(parentNode.childNodes, function(node, i){
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var calOffset;
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if(node.nodeType != 3){
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atmrange.moveToElementText(node);
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if(atmrange.compareEndPoints(cmpstr, range) > 0){
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//startnode = node.previousSibling;
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if(lastNode && lastNode.nodeType == 3){
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//where shall we put the start? in the text node or after?
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startnode = lastNode;
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calOffset = true;
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}else{
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startnode = parentNode;
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startOffset = i;
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return false;
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}
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}else{
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if(i == parentNode.childNodes.length - 1){
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startnode = parentNode;
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startOffset = parentNode.childNodes.length;
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return false;
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}
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}
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}else{
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if(i == parentNode.childNodes.length - 1){//at the end of this node
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startnode = node;
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calOffset = true;
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}
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}
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// try{
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if(calOffset && startnode){
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var prevnode = dijit.range.adjacentNoneTextNode(startnode)[0];
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if(prevnode){
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startnode = prevnode.nextSibling;
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}else{
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startnode = parentNode.firstChild; //firstChild must be a text node
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}
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var prevnodeobj = dijit.range.adjacentNoneTextNode(startnode);
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prevnode = prevnodeobj[0];
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var lenoffset = prevnodeobj[1];
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if(prevnode){
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atmrange.moveToElementText(prevnode);
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atmrange.collapse(false);
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}else{
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atmrange.moveToElementText(parentNode);
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}
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atmrange.setEndPoint(cmpstr, range);
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startOffset = atmrange.text.length - lenoffset;
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return false;
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}
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// }catch(e){ debugger }
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lastNode = node;
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return true;
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});
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}else{
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startnode = parentNode;
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startOffset = 0;
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}
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//if at the end of startnode and we are dealing with start container, then
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//move the startnode to nextSibling if it is a text node
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//TODO: do this for end container?
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if(!end && startnode.nodeType == 1 && startOffset == startnode.childNodes.length){
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var nextnode = startnode.nextSibling;
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if(nextnode && nextnode.nodeType == 3){
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startnode = nextnode;
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startOffset = 0;
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}
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}
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return [startnode, startOffset];
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},
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setEndPoint: function(range, container, offset){
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//text node
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var atmrange = range.duplicate(), node, len;
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if(container.nodeType != 3){ //normal node
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if(offset > 0){
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node = container.childNodes[offset - 1];
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if(node){
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if(node.nodeType == 3){
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container = node;
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offset = node.length;
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//pass through
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}else{
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if(node.nextSibling && node.nextSibling.nodeType == 3){
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container = node.nextSibling;
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offset = 0;
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//pass through
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}else{
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atmrange.moveToElementText(node.nextSibling ? node : container);
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var parent = node.parentNode;
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var tempNode = parent.insertBefore(node.ownerDocument.createTextNode(' '), node.nextSibling);
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atmrange.collapse(false);
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parent.removeChild(tempNode);
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}
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}
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}
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||
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|
}else{
|
||
|
|
atmrange.moveToElementText(container);
|
||
|
|
atmrange.collapse(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(container.nodeType == 3){
|
||
|
|
var prevnodeobj = dijit.range.adjacentNoneTextNode(container);
|
||
|
|
var prevnode = prevnodeobj[0];
|
||
|
|
len = prevnodeobj[1];
|
||
|
|
if(prevnode){
|
||
|
|
atmrange.moveToElementText(prevnode);
|
||
|
|
atmrange.collapse(false);
|
||
|
|
//if contentEditable is not inherit, the above collapse won't make the end point
|
||
|
|
//in the correctly position: it always has a -1 offset, so compensate it
|
||
|
|
if(prevnode.contentEditable != 'inherit'){
|
||
|
|
len++;
|
||
|
|
}
|
||
|
|
}else{
|
||
|
|
atmrange.moveToElementText(container.parentNode);
|
||
|
|
atmrange.collapse(true);
|
||
|
|
}
|
||
|
|
|
||
|
|
offset += len;
|
||
|
|
if(offset > 0){
|
||
|
|
if(atmrange.move('character', offset) != offset){
|
||
|
|
console.error('Error when moving!');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return atmrange;
|
||
|
|
},
|
||
|
|
decomposeTextRange: function(range){
|
||
|
|
var tmpary = dijit.range.ie.getEndPoint(range);
|
||
|
|
var startContainer = tmpary[0], startOffset = tmpary[1];
|
||
|
|
var endContainer = tmpary[0], endOffset = tmpary[1];
|
||
|
|
|
||
|
|
if(range.htmlText.length){
|
||
|
|
if(range.htmlText == range.text){ //in the same text node
|
||
|
|
endOffset = startOffset + range.text.length;
|
||
|
|
}else{
|
||
|
|
tmpary = dijit.range.ie.getEndPoint(range, true);
|
||
|
|
endContainer = tmpary[0],endOffset = tmpary[1];
|
||
|
|
// if(startContainer.tagName == "BODY"){
|
||
|
|
// startContainer = startContainer.firstChild;
|
||
|
|
// }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return [startContainer, startOffset, endContainer, endOffset];
|
||
|
|
},
|
||
|
|
setRange: function(range, startContainer, startOffset, endContainer, endOffset, collapsed){
|
||
|
|
var start = dijit.range.ie.setEndPoint(range, startContainer, startOffset);
|
||
|
|
|
||
|
|
range.setEndPoint('StartToStart', start);
|
||
|
|
if(!collapsed){
|
||
|
|
var end = dijit.range.ie.setEndPoint(range, endContainer, endOffset);
|
||
|
|
}
|
||
|
|
range.setEndPoint('EndToEnd', end || start);
|
||
|
|
|
||
|
|
return range;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
declare("dijit.range.W3CRange",null, {
|
||
|
|
constructor: function(){
|
||
|
|
if(arguments.length>0){
|
||
|
|
this.setStart(arguments[0][0],arguments[0][1]);
|
||
|
|
this.setEnd(arguments[0][2],arguments[0][3]);
|
||
|
|
}else{
|
||
|
|
this.commonAncestorContainer = null;
|
||
|
|
this.startContainer = null;
|
||
|
|
this.startOffset = 0;
|
||
|
|
this.endContainer = null;
|
||
|
|
this.endOffset = 0;
|
||
|
|
this.collapsed = true;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
_updateInternal: function(){
|
||
|
|
if(this.startContainer !== this.endContainer){
|
||
|
|
this.commonAncestorContainer = dijit.range.getCommonAncestor(this.startContainer, this.endContainer);
|
||
|
|
}else{
|
||
|
|
this.commonAncestorContainer = this.startContainer;
|
||
|
|
}
|
||
|
|
this.collapsed = (this.startContainer === this.endContainer) && (this.startOffset == this.endOffset);
|
||
|
|
},
|
||
|
|
setStart: function(node, offset){
|
||
|
|
offset=parseInt(offset);
|
||
|
|
if(this.startContainer === node && this.startOffset == offset){
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
delete this._cachedBookmark;
|
||
|
|
|
||
|
|
this.startContainer = node;
|
||
|
|
this.startOffset = offset;
|
||
|
|
if(!this.endContainer){
|
||
|
|
this.setEnd(node, offset);
|
||
|
|
}else{
|
||
|
|
this._updateInternal();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
setEnd: function(node, offset){
|
||
|
|
offset=parseInt(offset);
|
||
|
|
if(this.endContainer === node && this.endOffset == offset){
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
delete this._cachedBookmark;
|
||
|
|
|
||
|
|
this.endContainer = node;
|
||
|
|
this.endOffset = offset;
|
||
|
|
if(!this.startContainer){
|
||
|
|
this.setStart(node, offset);
|
||
|
|
}else{
|
||
|
|
this._updateInternal();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
setStartAfter: function(node, offset){
|
||
|
|
this._setPoint('setStart', node, offset, 1);
|
||
|
|
},
|
||
|
|
setStartBefore: function(node, offset){
|
||
|
|
this._setPoint('setStart', node, offset, 0);
|
||
|
|
},
|
||
|
|
setEndAfter: function(node, offset){
|
||
|
|
this._setPoint('setEnd', node, offset, 1);
|
||
|
|
},
|
||
|
|
setEndBefore: function(node, offset){
|
||
|
|
this._setPoint('setEnd', node, offset, 0);
|
||
|
|
},
|
||
|
|
_setPoint: function(what, node, offset, ext){
|
||
|
|
var index = dijit.range.getIndex(node, node.parentNode).o;
|
||
|
|
this[what](node.parentNode, index.pop()+ext);
|
||
|
|
},
|
||
|
|
_getIERange: function(){
|
||
|
|
var r = (this._body || this.endContainer.ownerDocument.body).createTextRange();
|
||
|
|
dijit.range.ie.setRange(r, this.startContainer, this.startOffset, this.endContainer, this.endOffset, this.collapsed);
|
||
|
|
return r;
|
||
|
|
},
|
||
|
|
getBookmark: function(){
|
||
|
|
this._getIERange();
|
||
|
|
return this._cachedBookmark;
|
||
|
|
},
|
||
|
|
_select: function(){
|
||
|
|
var r = this._getIERange();
|
||
|
|
r.select();
|
||
|
|
},
|
||
|
|
deleteContents: function(){
|
||
|
|
var s = this.startContainer, r = this._getIERange();
|
||
|
|
if(s.nodeType === 3 && !this.startOffset){
|
||
|
|
//if the range starts at the beginning of a
|
||
|
|
//text node, move it to before the textnode
|
||
|
|
//to make sure the range is still valid
|
||
|
|
//after deleteContents() finishes
|
||
|
|
this.setStartBefore(s);
|
||
|
|
}
|
||
|
|
r.pasteHTML('');
|
||
|
|
this.endContainer = this.startContainer;
|
||
|
|
this.endOffset = this.startOffset;
|
||
|
|
this.collapsed = true;
|
||
|
|
},
|
||
|
|
cloneRange: function(){
|
||
|
|
var r = new dijit.range.W3CRange([this.startContainer,this.startOffset,
|
||
|
|
this.endContainer,this.endOffset]);
|
||
|
|
r._body = this._body;
|
||
|
|
return r;
|
||
|
|
},
|
||
|
|
detach: function(){
|
||
|
|
this._body = null;
|
||
|
|
this.commonAncestorContainer = null;
|
||
|
|
this.startContainer = null;
|
||
|
|
this.startOffset = 0;
|
||
|
|
this.endContainer = null;
|
||
|
|
this.endOffset = 0;
|
||
|
|
this.collapsed = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
} //if(!dijit.range._w3c)
|
||
|
|
|
||
|
|
|
||
|
|
return dijit.range;
|
||
|
|
});
|