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root / trunk / web / dojo / dojox / data / OpmlStore.js @ 12

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/*
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        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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        Available via Academic Free License >= 2.1 OR the modified BSD license.
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        see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.data.OpmlStore"]){
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dojo._hasResource["dojox.data.OpmlStore"]=true;
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dojo.provide("dojox.data.OpmlStore");
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dojo.require("dojo.data.util.filter");
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dojo.require("dojo.data.util.simpleFetch");
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dojo.declare("dojox.data.OpmlStore",null,{constructor:function(_1){
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this._xmlData=null;
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this._arrayOfTopLevelItems=[];
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this._arrayOfAllItems=[];
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this._metadataNodes=null;
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this._loadFinished=false;
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this.url=_1.url;
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this._opmlData=_1.data;
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if(_1.label){
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this.label=_1.label;
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}
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this._loadInProgress=false;
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this._queuedFetches=[];
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this._identityMap={};
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this._identCount=0;
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this._idProp="_I";
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if(_1&&"urlPreventCache" in _1){
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this.urlPreventCache=_1.urlPreventCache?true:false;
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}
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},label:"text",url:"",urlPreventCache:false,_assertIsItem:function(_2){
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if(!this.isItem(_2)){
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throw new Error("dojo.data.OpmlStore: a function was passed an item argument that was not an item");
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}
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},_assertIsAttribute:function(_3){
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if(!dojo.isString(_3)){
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throw new Error("dojox.data.OpmlStore: a function was passed an attribute argument that was not an attribute object nor an attribute name string");
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}
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},_removeChildNodesThatAreNotElementNodes:function(_4,_5){
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var _6=_4.childNodes;
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if(_6.length===0){
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return;
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}
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var _7=[];
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var i,_8;
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for(i=0;i<_6.length;++i){
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_8=_6[i];
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if(_8.nodeType!=1){
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_7.push(_8);
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}
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}
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for(i=0;i<_7.length;++i){
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_8=_7[i];
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_4.removeChild(_8);
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}
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if(_5){
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for(i=0;i<_6.length;++i){
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_8=_6[i];
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this._removeChildNodesThatAreNotElementNodes(_8,_5);
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}
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}
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},_processRawXmlTree:function(_9){
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this._loadFinished=true;
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this._xmlData=_9;
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var _a=_9.getElementsByTagName("head");
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var _b=_a[0];
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if(_b){
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this._removeChildNodesThatAreNotElementNodes(_b);
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this._metadataNodes=_b.childNodes;
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}
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var _c=_9.getElementsByTagName("body");
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var _d=_c[0];
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if(_d){
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this._removeChildNodesThatAreNotElementNodes(_d,true);
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var _e=_c[0].childNodes;
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for(var i=0;i<_e.length;++i){
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var _f=_e[i];
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if(_f.tagName=="outline"){
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this._identityMap[this._identCount]=_f;
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this._identCount++;
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this._arrayOfTopLevelItems.push(_f);
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this._arrayOfAllItems.push(_f);
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this._checkChildNodes(_f);
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}
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}
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}
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},_checkChildNodes:function(_10){
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if(_10.firstChild){
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for(var i=0;i<_10.childNodes.length;i++){
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var _11=_10.childNodes[i];
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if(_11.tagName=="outline"){
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this._identityMap[this._identCount]=_11;
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this._identCount++;
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this._arrayOfAllItems.push(_11);
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this._checkChildNodes(_11);
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}
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}
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}
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},_getItemsArray:function(_12){
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if(_12&&_12.deep){
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return this._arrayOfAllItems;
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}
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return this._arrayOfTopLevelItems;
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},getValue:function(_13,_14,_15){
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this._assertIsItem(_13);
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this._assertIsAttribute(_14);
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if(_14=="children"){
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return (_13.firstChild||_15);
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}else{
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var _16=_13.getAttribute(_14);
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return (_16!==undefined)?_16:_15;
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}
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},getValues:function(_17,_18){
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this._assertIsItem(_17);
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this._assertIsAttribute(_18);
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var _19=[];
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if(_18=="children"){
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for(var i=0;i<_17.childNodes.length;++i){
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_19.push(_17.childNodes[i]);
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}
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}else{
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if(_17.getAttribute(_18)!==null){
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_19.push(_17.getAttribute(_18));
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}
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}
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return _19;
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},getAttributes:function(_1a){
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this._assertIsItem(_1a);
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var _1b=[];
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var _1c=_1a;
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var _1d=_1c.attributes;
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for(var i=0;i<_1d.length;++i){
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var _1e=_1d.item(i);
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_1b.push(_1e.nodeName);
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}
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if(_1c.childNodes.length>0){
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_1b.push("children");
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}
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return _1b;
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},hasAttribute:function(_1f,_20){
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return (this.getValues(_1f,_20).length>0);
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},containsValue:function(_21,_22,_23){
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var _24=undefined;
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if(typeof _23==="string"){
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_24=dojo.data.util.filter.patternToRegExp(_23,false);
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}
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return this._containsValue(_21,_22,_23,_24);
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},_containsValue:function(_25,_26,_27,_28){
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var _29=this.getValues(_25,_26);
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for(var i=0;i<_29.length;++i){
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var _2a=_29[i];
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if(typeof _2a==="string"&&_28){
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return (_2a.match(_28)!==null);
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}else{
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if(_27===_2a){
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return true;
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}
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}
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}
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return false;
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},isItem:function(_2b){
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return (_2b&&_2b.nodeType==1&&_2b.tagName=="outline"&&_2b.ownerDocument===this._xmlData);
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},isItemLoaded:function(_2c){
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return this.isItem(_2c);
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},loadItem:function(_2d){
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},getLabel:function(_2e){
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if(this.isItem(_2e)){
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return this.getValue(_2e,this.label);
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}
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return undefined;
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},getLabelAttributes:function(_2f){
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return [this.label];
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},_fetchItems:function(_30,_31,_32){
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var _33=this;
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var _34=function(_35,_36){
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var _37=null;
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if(_35.query){
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_37=[];
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var _38=_35.queryOptions?_35.queryOptions.ignoreCase:false;
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var _39={};
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for(var key in _35.query){
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var _3a=_35.query[key];
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if(typeof _3a==="string"){
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_39[key]=dojo.data.util.filter.patternToRegExp(_3a,_38);
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}
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}
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for(var i=0;i<_36.length;++i){
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var _3b=true;
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var _3c=_36[i];
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for(var key in _35.query){
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var _3a=_35.query[key];
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if(!_33._containsValue(_3c,key,_3a,_39[key])){
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_3b=false;
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}
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}
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if(_3b){
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_37.push(_3c);
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}
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}
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}else{
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if(_36.length>0){
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_37=_36.slice(0,_36.length);
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}
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}
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_31(_37,_35);
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};
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if(this._loadFinished){
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_34(_30,this._getItemsArray(_30.queryOptions));
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}else{
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if(this._loadInProgress){
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this._queuedFetches.push({args:_30,filter:_34});
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}else{
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if(this.url!==""){
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this._loadInProgress=true;
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var _3d={url:_33.url,handleAs:"xml",preventCache:_33.urlPreventCache};
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var _3e=dojo.xhrGet(_3d);
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_3e.addCallback(function(_3f){
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_33._processRawXmlTree(_3f);
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_34(_30,_33._getItemsArray(_30.queryOptions));
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_33._handleQueuedFetches();
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});
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_3e.addErrback(function(_40){
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throw _40;
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});
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}else{
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if(this._opmlData){
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this._processRawXmlTree(this._opmlData);
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this._opmlData=null;
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_34(_30,this._getItemsArray(_30.queryOptions));
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}else{
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throw new Error("dojox.data.OpmlStore: No OPML source data was provided as either URL or XML data input.");
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}
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}
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}
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}
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},getFeatures:function(){
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var _41={"dojo.data.api.Read":true,"dojo.data.api.Identity":true};
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return _41;
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},getIdentity:function(_42){
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if(this.isItem(_42)){
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for(var i in this._identityMap){
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if(this._identityMap[i]===_42){
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return i;
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}
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}
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}
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return null;
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},fetchItemByIdentity:function(_43){
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if(!this._loadFinished){
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var _44=this;
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if(this.url!==""){
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if(this._loadInProgress){
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this._queuedFetches.push({args:_43});
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}else{
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this._loadInProgress=true;
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var _45={url:_44.url,handleAs:"xml"};
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var _46=dojo.xhrGet(_45);
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_46.addCallback(function(_47){
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var _48=_43.scope?_43.scope:dojo.global;
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try{
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_44._processRawXmlTree(_47);
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var _49=_44._identityMap[_43.identity];
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if(!_44.isItem(_49)){
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_49=null;
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}
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if(_43.onItem){
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_43.onItem.call(_48,_49);
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}
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_44._handleQueuedFetches();
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}
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catch(error){
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if(_43.onError){
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_43.onError.call(_48,error);
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}
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}
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});
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_46.addErrback(function(_4a){
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this._loadInProgress=false;
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if(_43.onError){
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var _4b=_43.scope?_43.scope:dojo.global;
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_43.onError.call(_4b,_4a);
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}
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});
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}
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}else{
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if(this._opmlData){
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this._processRawXmlTree(this._opmlData);
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this._opmlData=null;
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var _4c=this._identityMap[_43.identity];
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if(!_44.isItem(_4c)){
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_4c=null;
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}
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if(_43.onItem){
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var _4d=_43.scope?_43.scope:dojo.global;
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_43.onItem.call(_4d,_4c);
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}
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}
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}
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}else{
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var _4c=this._identityMap[_43.identity];
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if(!this.isItem(_4c)){
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_4c=null;
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}
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if(_43.onItem){
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var _4d=_43.scope?_43.scope:dojo.global;
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_43.onItem.call(_4d,_4c);
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}
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}
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},getIdentityAttributes:function(_4e){
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return null;
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},_handleQueuedFetches:function(){
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if(this._queuedFetches.length>0){
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for(var i=0;i<this._queuedFetches.length;i++){
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var _4f=this._queuedFetches[i];
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var _50=_4f.args;
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var _51=_4f.filter;
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if(_51){
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_51(_50,this._getItemsArray(_50.queryOptions));
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}else{
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this.fetchItemByIdentity(_50);
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}
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}
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this._queuedFetches=[];
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}
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},close:function(_52){
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}});
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dojo.extend(dojox.data.OpmlStore,dojo.data.util.simpleFetch);
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}