root / trunk / web / dojo / dojox / data / AtomReadStore.js @ 13
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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.AtomReadStore"]){ |
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dojo._hasResource["dojox.data.AtomReadStore"]=true; |
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dojo.provide("dojox.data.AtomReadStore");
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dojo.require("dojo.data.util.simpleFetch");
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dojo.require("dojo.data.util.filter");
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dojo.require("dojo.date.stamp");
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dojo.experimental("dojox.data.AtomReadStore");
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dojo.declare("dojox.data.AtomReadStore",null,{constructor:function(_1){ |
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if(_1){
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this.url=_1.url;
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this.rewriteUrl=_1.rewriteUrl;
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this.label=_1.label||this.label; |
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this.sendQuery=(_1.sendQuery||_1.sendquery||this.sendQuery); |
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this.unescapeHTML=_1.unescapeHTML;
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if("urlPreventCache" in _1){ |
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this.urlPreventCache=_1.urlPreventCache?true:false; |
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} |
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} |
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if(!this.url){ |
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throw new Error("AtomReadStore: a URL must be specified when creating the data store"); |
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} |
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},url:"",label:"title",sendQuery:false,unescapeHTML:false,urlPreventCache:false,getValue:function(_2,_3,_4){ |
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this._assertIsItem(_2);
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this._assertIsAttribute(_3);
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this._initItem(_2);
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_3=_3.toLowerCase(); |
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if(!_2._attribs[_3]&&!_2._parsed){
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this._parseItem(_2);
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_2._parsed=true;
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} |
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var _5=_2._attribs[_3];
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if(!_5&&_3=="summary"){ |
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var _6=this.getValue(_2,"content"); |
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var _7=new RegExp("/(<([^>]+)>)/g","i"); |
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var _8=_6.text.replace(_7,""); |
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_5={text:_8.substring(0,Math.min(400,_8.length)),type:"text"};
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_2._attribs[_3]=_5; |
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} |
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if(_5&&this.unescapeHTML){ |
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if((_3=="content"||_3=="summary"||_3=="subtitle")&&!_2["_"+_3+"Escaped"]){ |
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_5.text=this._unescapeHTML(_5.text);
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_2["_"+_3+"Escaped"]=true; |
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} |
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} |
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return _5?dojo.isArray(_5)?_5[0]:_5:_4; |
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},getValues:function(_9,_a){ |
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this._assertIsItem(_9);
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this._assertIsAttribute(_a);
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this._initItem(_9);
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_a=_a.toLowerCase(); |
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if(!_9._attribs[_a]){
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this._parseItem(_9);
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} |
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var _b=_9._attribs[_a];
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return _b?((_b.length!==undefined&&typeof (_b)!=="string")?_b:[_b]):undefined; |
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},getAttributes:function(_c){ |
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this._assertIsItem(_c);
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if(!_c._attribs){
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this._initItem(_c);
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this._parseItem(_c);
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} |
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var _d=[];
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for(var x in _c._attribs){ |
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_d.push(x); |
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} |
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return _d;
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},hasAttribute:function(_e,_f){ |
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return (this.getValue(_e,_f)!==undefined); |
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},containsValue:function(_10,_11,_12){ |
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var _13=this.getValues(_10,_11); |
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for(var i=0;i<_13.length;i++){ |
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if((typeof _12==="string")){ |
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if(_13[i].toString&&_13[i].toString()===_12){
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return true; |
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} |
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}else{
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if(_13[i]===_12){
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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(_14){ |
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if(_14&&_14.element&&_14.store&&_14.store===this){ |
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return true; |
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} |
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return false; |
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},isItemLoaded:function(_15){ |
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return this.isItem(_15); |
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},loadItem:function(_16){ |
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},getFeatures:function(){ |
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var _17={"dojo.data.api.Read":true}; |
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return _17;
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},getLabel:function(_18){ |
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if((this.label!=="")&&this.isItem(_18)){ |
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var _19=this.getValue(_18,this.label); |
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if(_19&&_19.text){
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return _19.text;
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}else{
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if(_19){
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return _19.toString();
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}else{
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return undefined; |
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} |
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} |
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} |
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return undefined; |
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},getLabelAttributes:function(_1a){ |
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if(this.label!==""){ |
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return [this.label]; |
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} |
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return null; |
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},getFeedValue:function(_1b,_1c){ |
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var _1d=this.getFeedValues(_1b,_1c); |
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if(dojo.isArray(_1d)){
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return _1d[0]; |
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} |
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return _1d;
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},getFeedValues:function(_1e,_1f){ |
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if(!this.doc){ |
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return _1f;
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} |
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if(!this._feedMetaData){ |
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this._feedMetaData={element:this.doc.getElementsByTagName("feed")[0],store:this,_attribs:{}}; |
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this._parseItem(this._feedMetaData); |
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} |
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return this._feedMetaData._attribs[_1e]||_1f; |
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},_initItem:function(_20){ |
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if(!_20._attribs){
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_20._attribs={};
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} |
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},_fetchItems:function(_21,_22,_23){ |
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var url=this._getFetchUrl(_21); |
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if(!url){
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_23(new Error("No URL specified.")); |
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return;
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} |
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var _24=(!this.sendQuery?_21:null); |
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var _25=this; |
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var _26=function(_27){ |
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_25.doc=_27; |
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var _28=_25._getItems(_27,_24);
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var _29=_21.query;
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if(_29){
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if(_29.id){
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_28=dojo.filter(_28,function(_2a){
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return (_25.getValue(_2a,"id")==_29.id); |
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}); |
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}else{
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if(_29.category){
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_28=dojo.filter(_28,function(_2b){
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var _2c=_25.getValues(_2b,"category"); |
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if(!_2c){
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return false; |
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} |
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return dojo.some(_2c,"return item.term=='"+_29.category+"'"); |
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}); |
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} |
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} |
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} |
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if(_28&&_28.length>0){ |
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_22(_28,_21); |
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}else{
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_22([],_21); |
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} |
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}; |
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if(this.doc){ |
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_26(this.doc);
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}else{
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var _2d={url:url,handleAs:"xml",preventCache:this.urlPreventCache}; |
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var _2e=dojo.xhrGet(_2d);
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_2e.addCallback(_26); |
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_2e.addErrback(function(_2f){
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_23(_2f,_21); |
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}); |
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} |
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},_getFetchUrl:function(_30){ |
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if(!this.sendQuery){ |
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return this.url; |
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} |
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var _31=_30.query;
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if(!_31){
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return this.url; |
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} |
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if(dojo.isString(_31)){
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return this.url+_31; |
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} |
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var _32=""; |
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for(var _33 in _31){ |
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var _34=_31[_33];
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if(_34){
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if(_32){
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_32+="&";
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} |
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_32+=(_33+"="+_34);
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} |
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} |
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if(!_32){
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return this.url; |
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} |
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var _35=this.url; |
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if(_35.indexOf("?")<0){ |
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_35+="?";
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}else{
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_35+="&";
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} |
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return _35+_32;
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},_getItems:function(_36,_37){ |
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if(this._items){ |
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return this._items; |
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} |
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var _38=[];
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var _39=[];
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if(_36.childNodes.length<1){ |
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this._items=_38;
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return _38;
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} |
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var _3a=dojo.filter(_36.childNodes,"return item.tagName && item.tagName.toLowerCase() == 'feed'"); |
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var _3b=_37.query;
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if(!_3a||_3a.length!=1){ |
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return _38;
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} |
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_39=dojo.filter(_3a[0].childNodes,"return item.tagName && item.tagName.toLowerCase() == 'entry'"); |
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if(_37.onBegin){
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_37.onBegin(_39.length,this.sendQuery?_37:{});
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} |
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for(var i=0;i<_39.length;i++){ |
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var _3c=_39[i];
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if(_3c.nodeType!=1){ |
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continue;
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} |
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_38.push(this._getItem(_3c));
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} |
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this._items=_38;
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return _38;
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},close:function(_3d){ |
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},_getItem:function(_3e){ |
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return {element:_3e,store:this}; |
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},_parseItem:function(_3f){ |
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var _40=_3f._attribs;
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var _41=this; |
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var _42,_43;
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function _44(_45){ |
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var txt=_45.textContent||_45.innerHTML||_45.innerXML;
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if(!txt&&_45.childNodes[0]){ |
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var _46=_45.childNodes[0]; |
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if(_46&&(_46.nodeType==3||_46.nodeType==4)){ |
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txt=_45.childNodes[0].nodeValue;
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} |
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} |
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return txt;
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}; |
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function _47(_48){ |
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return {text:_44(_48),type:_48.getAttribute("type")}; |
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}; |
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dojo.forEach(_3f.element.childNodes,function(_49){
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var _4a=_49.tagName?_49.tagName.toLowerCase():""; |
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switch(_4a){
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case "title": |
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_40[_4a]={text:_44(_49),type:_49.getAttribute("type")};
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break;
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case "subtitle": |
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case "summary": |
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case "content": |
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_40[_4a]=_47(_49); |
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break;
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case "author": |
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var _4b,_4c;
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dojo.forEach(_49.childNodes,function(_4d){
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if(!_4d.tagName){
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return;
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} |
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switch(_4d.tagName.toLowerCase()){
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case "name": |
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_4b=_4d; |
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break;
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case "uri": |
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_4c=_4d; |
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break;
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} |
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}); |
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var _4e={};
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if(_4b&&_4b.length==1){ |
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_4e.name=_44(_4b[0]);
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} |
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if(_4c&&_4c.length==1){ |
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_4e.uri=_44(_4c[0]);
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} |
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_40[_4a]=_4e; |
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break;
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case "id": |
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_40[_4a]=_44(_49); |
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break;
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case "updated": |
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_40[_4a]=dojo.date.stamp.fromISOString(_44(_49)); |
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break;
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case "published": |
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_40[_4a]=dojo.date.stamp.fromISOString(_44(_49)); |
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break;
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case "category": |
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if(!_40[_4a]){
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_40[_4a]=[]; |
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} |
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_40[_4a].push({scheme:_49.getAttribute("scheme"),term:_49.getAttribute("term")});
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break;
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case "link": |
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if(!_40[_4a]){
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_40[_4a]=[]; |
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} |
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var _4f={rel:_49.getAttribute("rel"),href:_49.getAttribute("href"),type:_49.getAttribute("type")}; |
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_40[_4a].push(_4f); |
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if(_4f.rel=="alternate"){ |
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_40["alternate"]=_4f;
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} |
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break;
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default:
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break;
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} |
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}); |
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},_unescapeHTML:function(_50){ |
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_50=_50.replace(/’/m,"'").replace(/″/m,"\"").replace(/</m,">").replace(/>/m,"<").replace(/&/m,"&"); |
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return _50;
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},_assertIsItem:function(_51){ |
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if(!this.isItem(_51)){ |
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throw new Error("dojox.data.AtomReadStore: Invalid item argument."); |
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} |
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},_assertIsAttribute:function(_52){ |
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if(typeof _52!=="string"){ |
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throw new Error("dojox.data.AtomReadStore: Invalid attribute argument."); |
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} |
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}}); |
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dojo.extend(dojox.data.AtomReadStore,dojo.data.util.simpleFetch); |
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} |