root / trunk / web / dojo / dojox / data / AtomReadStore.js @ 9
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| 1 | 9 | andrej.cim | /*
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| 2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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| 3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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| 4 | see: http://dojotoolkit.org/license for details
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| 5 | */
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| 6 | |||
| 7 | |||
| 8 | if(!dojo._hasResource["dojox.data.AtomReadStore"]){ |
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| 9 | dojo._hasResource["dojox.data.AtomReadStore"]=true; |
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| 10 | dojo.provide("dojox.data.AtomReadStore");
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| 11 | dojo.require("dojo.data.util.simpleFetch");
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| 12 | dojo.require("dojo.data.util.filter");
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| 13 | dojo.require("dojo.date.stamp");
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| 14 | dojo.experimental("dojox.data.AtomReadStore");
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| 15 | dojo.declare("dojox.data.AtomReadStore",null,{constructor:function(_1){ |
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| 16 | if(_1){
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| 17 | this.url=_1.url;
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| 18 | this.rewriteUrl=_1.rewriteUrl;
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| 19 | this.label=_1.label||this.label; |
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| 20 | this.sendQuery=(_1.sendQuery||_1.sendquery||this.sendQuery); |
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| 21 | this.unescapeHTML=_1.unescapeHTML;
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| 22 | if("urlPreventCache" in _1){ |
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| 23 | this.urlPreventCache=_1.urlPreventCache?true:false; |
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| 24 | } |
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| 25 | } |
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| 26 | if(!this.url){ |
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| 27 | throw new Error("AtomReadStore: a URL must be specified when creating the data store"); |
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| 28 | } |
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| 29 | },url:"",label:"title",sendQuery:false,unescapeHTML:false,urlPreventCache:false,getValue:function(_2,_3,_4){ |
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| 30 | this._assertIsItem(_2);
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| 31 | this._assertIsAttribute(_3);
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| 32 | this._initItem(_2);
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| 33 | _3=_3.toLowerCase(); |
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| 34 | if(!_2._attribs[_3]&&!_2._parsed){
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| 35 | this._parseItem(_2);
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| 36 | _2._parsed=true;
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| 37 | } |
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| 38 | var _5=_2._attribs[_3];
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| 39 | if(!_5&&_3=="summary"){ |
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| 40 | var _6=this.getValue(_2,"content"); |
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| 41 | var _7=new RegExp("/(<([^>]+)>)/g","i"); |
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| 42 | var _8=_6.text.replace(_7,""); |
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| 43 | _5={text:_8.substring(0,Math.min(400,_8.length)),type:"text"};
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| 44 | _2._attribs[_3]=_5; |
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| 45 | } |
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| 46 | if(_5&&this.unescapeHTML){ |
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| 47 | if((_3=="content"||_3=="summary"||_3=="subtitle")&&!_2["_"+_3+"Escaped"]){ |
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| 48 | _5.text=this._unescapeHTML(_5.text);
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| 49 | _2["_"+_3+"Escaped"]=true; |
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| 50 | } |
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| 51 | } |
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| 52 | return _5?dojo.isArray(_5)?_5[0]:_5:_4; |
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| 53 | },getValues:function(_9,_a){ |
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| 54 | this._assertIsItem(_9);
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| 55 | this._assertIsAttribute(_a);
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| 56 | this._initItem(_9);
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| 57 | _a=_a.toLowerCase(); |
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| 58 | if(!_9._attribs[_a]){
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| 59 | this._parseItem(_9);
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| 60 | } |
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| 61 | var _b=_9._attribs[_a];
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| 62 | return _b?((_b.length!==undefined&&typeof (_b)!=="string")?_b:[_b]):undefined; |
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| 63 | },getAttributes:function(_c){ |
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| 64 | this._assertIsItem(_c);
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| 65 | if(!_c._attribs){
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| 66 | this._initItem(_c);
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| 67 | this._parseItem(_c);
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| 68 | } |
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| 69 | var _d=[];
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| 70 | for(var x in _c._attribs){ |
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| 71 | _d.push(x); |
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| 72 | } |
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| 73 | return _d;
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| 74 | },hasAttribute:function(_e,_f){ |
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| 75 | return (this.getValue(_e,_f)!==undefined); |
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| 76 | },containsValue:function(_10,_11,_12){ |
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| 77 | var _13=this.getValues(_10,_11); |
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| 78 | for(var i=0;i<_13.length;i++){ |
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| 79 | if((typeof _12==="string")){ |
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| 80 | if(_13[i].toString&&_13[i].toString()===_12){
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| 81 | return true; |
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| 82 | } |
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| 83 | }else{
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| 84 | if(_13[i]===_12){
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| 85 | return true; |
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| 86 | } |
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| 87 | } |
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| 88 | } |
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| 89 | return false; |
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| 90 | },isItem:function(_14){ |
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| 91 | if(_14&&_14.element&&_14.store&&_14.store===this){ |
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| 92 | return true; |
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| 93 | } |
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| 94 | return false; |
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| 95 | },isItemLoaded:function(_15){ |
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| 96 | return this.isItem(_15); |
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| 97 | },loadItem:function(_16){ |
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| 98 | },getFeatures:function(){ |
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| 99 | var _17={"dojo.data.api.Read":true}; |
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| 100 | return _17;
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| 101 | },getLabel:function(_18){ |
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| 102 | if((this.label!=="")&&this.isItem(_18)){ |
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| 103 | var _19=this.getValue(_18,this.label); |
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| 104 | if(_19&&_19.text){
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| 105 | return _19.text;
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| 106 | }else{
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| 107 | if(_19){
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| 108 | return _19.toString();
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| 109 | }else{
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| 110 | return undefined; |
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| 111 | } |
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| 112 | } |
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| 113 | } |
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| 114 | return undefined; |
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| 115 | },getLabelAttributes:function(_1a){ |
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| 116 | if(this.label!==""){ |
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| 117 | return [this.label]; |
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| 118 | } |
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| 119 | return null; |
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| 120 | },getFeedValue:function(_1b,_1c){ |
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| 121 | var _1d=this.getFeedValues(_1b,_1c); |
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| 122 | if(dojo.isArray(_1d)){
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| 123 | return _1d[0]; |
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| 124 | } |
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| 125 | return _1d;
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| 126 | },getFeedValues:function(_1e,_1f){ |
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| 127 | if(!this.doc){ |
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| 128 | return _1f;
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| 129 | } |
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| 130 | if(!this._feedMetaData){ |
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| 131 | this._feedMetaData={element:this.doc.getElementsByTagName("feed")[0],store:this,_attribs:{}}; |
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| 132 | this._parseItem(this._feedMetaData); |
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| 133 | } |
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| 134 | return this._feedMetaData._attribs[_1e]||_1f; |
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| 135 | },_initItem:function(_20){ |
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| 136 | if(!_20._attribs){
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| 137 | _20._attribs={};
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| 138 | } |
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| 139 | },_fetchItems:function(_21,_22,_23){ |
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| 140 | var url=this._getFetchUrl(_21); |
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| 141 | if(!url){
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| 142 | _23(new Error("No URL specified.")); |
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| 143 | return;
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| 144 | } |
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| 145 | var _24=(!this.sendQuery?_21:null); |
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| 146 | var _25=this; |
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| 147 | var _26=function(_27){ |
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| 148 | _25.doc=_27; |
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| 149 | var _28=_25._getItems(_27,_24);
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| 150 | var _29=_21.query;
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| 151 | if(_29){
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| 152 | if(_29.id){
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| 153 | _28=dojo.filter(_28,function(_2a){
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| 154 | return (_25.getValue(_2a,"id")==_29.id); |
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| 155 | }); |
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| 156 | }else{
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| 157 | if(_29.category){
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| 158 | _28=dojo.filter(_28,function(_2b){
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| 159 | var _2c=_25.getValues(_2b,"category"); |
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| 160 | if(!_2c){
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| 161 | return false; |
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| 162 | } |
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| 163 | return dojo.some(_2c,"return item.term=='"+_29.category+"'"); |
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| 164 | }); |
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| 165 | } |
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| 166 | } |
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| 167 | } |
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| 168 | if(_28&&_28.length>0){ |
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| 169 | _22(_28,_21); |
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| 170 | }else{
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| 171 | _22([],_21); |
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| 172 | } |
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| 173 | }; |
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| 174 | if(this.doc){ |
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| 175 | _26(this.doc);
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| 176 | }else{
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| 177 | var _2d={url:url,handleAs:"xml",preventCache:this.urlPreventCache}; |
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| 178 | var _2e=dojo.xhrGet(_2d);
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| 179 | _2e.addCallback(_26); |
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| 180 | _2e.addErrback(function(_2f){
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| 181 | _23(_2f,_21); |
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| 182 | }); |
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| 183 | } |
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| 184 | },_getFetchUrl:function(_30){ |
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| 185 | if(!this.sendQuery){ |
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| 186 | return this.url; |
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| 187 | } |
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| 188 | var _31=_30.query;
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| 189 | if(!_31){
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| 190 | return this.url; |
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| 191 | } |
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| 192 | if(dojo.isString(_31)){
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| 193 | return this.url+_31; |
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| 194 | } |
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| 195 | var _32=""; |
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| 196 | for(var _33 in _31){ |
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| 197 | var _34=_31[_33];
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| 198 | if(_34){
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| 199 | if(_32){
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| 200 | _32+="&";
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| 201 | } |
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| 202 | _32+=(_33+"="+_34);
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| 203 | } |
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| 204 | } |
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| 205 | if(!_32){
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| 206 | return this.url; |
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| 207 | } |
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| 208 | var _35=this.url; |
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| 209 | if(_35.indexOf("?")<0){ |
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| 210 | _35+="?";
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| 211 | }else{
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| 212 | _35+="&";
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| 213 | } |
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| 214 | return _35+_32;
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| 215 | },_getItems:function(_36,_37){ |
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| 216 | if(this._items){ |
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| 217 | return this._items; |
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| 218 | } |
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| 219 | var _38=[];
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| 220 | var _39=[];
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| 221 | if(_36.childNodes.length<1){ |
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| 222 | this._items=_38;
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| 223 | return _38;
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| 224 | } |
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| 225 | var _3a=dojo.filter(_36.childNodes,"return item.tagName && item.tagName.toLowerCase() == 'feed'"); |
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| 226 | var _3b=_37.query;
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| 227 | if(!_3a||_3a.length!=1){ |
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| 228 | return _38;
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| 229 | } |
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| 230 | _39=dojo.filter(_3a[0].childNodes,"return item.tagName && item.tagName.toLowerCase() == 'entry'"); |
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| 231 | if(_37.onBegin){
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| 232 | _37.onBegin(_39.length,this.sendQuery?_37:{});
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| 233 | } |
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| 234 | for(var i=0;i<_39.length;i++){ |
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| 235 | var _3c=_39[i];
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| 236 | if(_3c.nodeType!=1){ |
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| 237 | continue;
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| 238 | } |
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| 239 | _38.push(this._getItem(_3c));
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| 240 | } |
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| 241 | this._items=_38;
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| 242 | return _38;
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| 243 | },close:function(_3d){ |
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| 244 | },_getItem:function(_3e){ |
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| 245 | return {element:_3e,store:this}; |
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| 246 | },_parseItem:function(_3f){ |
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| 247 | var _40=_3f._attribs;
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| 248 | var _41=this; |
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| 249 | var _42,_43;
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| 250 | function _44(_45){ |
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| 251 | var txt=_45.textContent||_45.innerHTML||_45.innerXML;
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| 252 | if(!txt&&_45.childNodes[0]){ |
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| 253 | var _46=_45.childNodes[0]; |
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| 254 | if(_46&&(_46.nodeType==3||_46.nodeType==4)){ |
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| 255 | txt=_45.childNodes[0].nodeValue;
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| 256 | } |
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| 257 | } |
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| 258 | return txt;
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| 259 | }; |
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| 260 | function _47(_48){ |
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| 261 | return {text:_44(_48),type:_48.getAttribute("type")}; |
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| 262 | }; |
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| 263 | dojo.forEach(_3f.element.childNodes,function(_49){
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| 264 | var _4a=_49.tagName?_49.tagName.toLowerCase():""; |
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| 265 | switch(_4a){
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| 266 | case "title": |
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| 267 | _40[_4a]={text:_44(_49),type:_49.getAttribute("type")};
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| 268 | break;
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| 269 | case "subtitle": |
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| 270 | case "summary": |
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| 271 | case "content": |
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| 272 | _40[_4a]=_47(_49); |
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| 273 | break;
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| 274 | case "author": |
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| 275 | var _4b,_4c;
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| 276 | dojo.forEach(_49.childNodes,function(_4d){
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| 277 | if(!_4d.tagName){
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| 278 | return;
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| 279 | } |
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| 280 | switch(_4d.tagName.toLowerCase()){
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| 281 | case "name": |
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| 282 | _4b=_4d; |
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| 283 | break;
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| 284 | case "uri": |
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| 285 | _4c=_4d; |
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| 286 | break;
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| 287 | } |
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| 288 | }); |
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| 289 | var _4e={};
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| 290 | if(_4b&&_4b.length==1){ |
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| 291 | _4e.name=_44(_4b[0]);
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| 292 | } |
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| 293 | if(_4c&&_4c.length==1){ |
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| 294 | _4e.uri=_44(_4c[0]);
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| 295 | } |
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| 296 | _40[_4a]=_4e; |
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| 297 | break;
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| 298 | case "id": |
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| 299 | _40[_4a]=_44(_49); |
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| 300 | break;
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| 301 | case "updated": |
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| 302 | _40[_4a]=dojo.date.stamp.fromISOString(_44(_49)); |
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| 303 | break;
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| 304 | case "published": |
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| 305 | _40[_4a]=dojo.date.stamp.fromISOString(_44(_49)); |
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| 306 | break;
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| 307 | case "category": |
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| 308 | if(!_40[_4a]){
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| 309 | _40[_4a]=[]; |
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| 310 | } |
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| 311 | _40[_4a].push({scheme:_49.getAttribute("scheme"),term:_49.getAttribute("term")});
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| 312 | break;
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| 313 | case "link": |
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| 314 | if(!_40[_4a]){
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| 315 | _40[_4a]=[]; |
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| 316 | } |
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| 317 | var _4f={rel:_49.getAttribute("rel"),href:_49.getAttribute("href"),type:_49.getAttribute("type")}; |
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| 318 | _40[_4a].push(_4f); |
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| 319 | if(_4f.rel=="alternate"){ |
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| 320 | _40["alternate"]=_4f;
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| 321 | } |
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| 322 | break;
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| 323 | default:
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| 324 | break;
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| 325 | } |
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| 326 | }); |
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| 327 | },_unescapeHTML:function(_50){ |
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| 328 | _50=_50.replace(/’/m,"'").replace(/″/m,"\"").replace(/</m,">").replace(/>/m,"<").replace(/&/m,"&"); |
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| 329 | return _50;
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| 330 | },_assertIsItem:function(_51){ |
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| 331 | if(!this.isItem(_51)){ |
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| 332 | throw new Error("dojox.data.AtomReadStore: Invalid item argument."); |
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| 333 | } |
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| 334 | },_assertIsAttribute:function(_52){ |
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| 335 | if(typeof _52!=="string"){ |
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| 336 | throw new Error("dojox.data.AtomReadStore: Invalid attribute argument."); |
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| 337 | } |
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| 338 | }}); |
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| 339 | dojo.extend(dojox.data.AtomReadStore,dojo.data.util.simpleFetch); |
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| 340 | } |