root / trunk / web / dojo / dojox / data / OpmlStore.js
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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.OpmlStore"]){ |
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| 9 | dojo._hasResource["dojox.data.OpmlStore"]=true; |
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| 10 | dojo.provide("dojox.data.OpmlStore");
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| 11 | dojo.require("dojo.data.util.filter");
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| 12 | dojo.require("dojo.data.util.simpleFetch");
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| 13 | dojo.declare("dojox.data.OpmlStore",null,{constructor:function(_1){ |
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| 14 | this._xmlData=null; |
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| 15 | this._arrayOfTopLevelItems=[];
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| 16 | this._arrayOfAllItems=[];
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| 17 | this._metadataNodes=null; |
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| 18 | this._loadFinished=false; |
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| 19 | this.url=_1.url;
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| 20 | this._opmlData=_1.data;
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| 21 | if(_1.label){
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| 22 | this.label=_1.label;
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| 23 | } |
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| 24 | this._loadInProgress=false; |
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| 25 | this._queuedFetches=[];
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| 26 | this._identityMap={};
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| 27 | this._identCount=0; |
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| 28 | this._idProp="_I"; |
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| 29 | if(_1&&"urlPreventCache" in _1){ |
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| 30 | this.urlPreventCache=_1.urlPreventCache?true:false; |
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| 31 | } |
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| 32 | },label:"text",url:"",urlPreventCache:false,_assertIsItem:function(_2){ |
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| 33 | if(!this.isItem(_2)){ |
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| 34 | throw new Error("dojo.data.OpmlStore: a function was passed an item argument that was not an item"); |
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| 35 | } |
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| 36 | },_assertIsAttribute:function(_3){ |
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| 37 | if(!dojo.isString(_3)){
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| 38 | 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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| 39 | } |
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| 40 | },_removeChildNodesThatAreNotElementNodes:function(_4,_5){ |
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| 41 | var _6=_4.childNodes;
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| 42 | if(_6.length===0){ |
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| 43 | return;
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| 44 | } |
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| 45 | var _7=[];
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| 46 | var i,_8;
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| 47 | for(i=0;i<_6.length;++i){ |
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| 48 | _8=_6[i]; |
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| 49 | if(_8.nodeType!=1){ |
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| 50 | _7.push(_8); |
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| 51 | } |
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| 52 | } |
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| 53 | for(i=0;i<_7.length;++i){ |
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| 54 | _8=_7[i]; |
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| 55 | _4.removeChild(_8); |
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| 56 | } |
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| 57 | if(_5){
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| 58 | for(i=0;i<_6.length;++i){ |
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| 59 | _8=_6[i]; |
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| 60 | this._removeChildNodesThatAreNotElementNodes(_8,_5);
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| 61 | } |
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| 62 | } |
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| 63 | },_processRawXmlTree:function(_9){ |
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| 64 | this._loadFinished=true; |
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| 65 | this._xmlData=_9;
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| 66 | var _a=_9.getElementsByTagName("head"); |
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| 67 | var _b=_a[0]; |
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| 68 | if(_b){
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| 69 | this._removeChildNodesThatAreNotElementNodes(_b);
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| 70 | this._metadataNodes=_b.childNodes;
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| 71 | } |
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| 72 | var _c=_9.getElementsByTagName("body"); |
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| 73 | var _d=_c[0]; |
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| 74 | if(_d){
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| 75 | this._removeChildNodesThatAreNotElementNodes(_d,true); |
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| 76 | var _e=_c[0].childNodes; |
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| 77 | for(var i=0;i<_e.length;++i){ |
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| 78 | var _f=_e[i];
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| 79 | if(_f.tagName=="outline"){ |
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| 80 | this._identityMap[this._identCount]=_f; |
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| 81 | this._identCount++;
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| 82 | this._arrayOfTopLevelItems.push(_f);
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| 83 | this._arrayOfAllItems.push(_f);
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| 84 | this._checkChildNodes(_f);
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| 85 | } |
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| 86 | } |
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| 87 | } |
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| 88 | },_checkChildNodes:function(_10){ |
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| 89 | if(_10.firstChild){
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| 90 | for(var i=0;i<_10.childNodes.length;i++){ |
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| 91 | var _11=_10.childNodes[i];
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| 92 | if(_11.tagName=="outline"){ |
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| 93 | this._identityMap[this._identCount]=_11; |
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| 94 | this._identCount++;
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| 95 | this._arrayOfAllItems.push(_11);
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| 96 | this._checkChildNodes(_11);
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| 97 | } |
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| 98 | } |
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| 99 | } |
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| 100 | },_getItemsArray:function(_12){ |
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| 101 | if(_12&&_12.deep){
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| 102 | return this._arrayOfAllItems; |
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| 103 | } |
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| 104 | return this._arrayOfTopLevelItems; |
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| 105 | },getValue:function(_13,_14,_15){ |
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| 106 | this._assertIsItem(_13);
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| 107 | this._assertIsAttribute(_14);
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| 108 | if(_14=="children"){ |
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| 109 | return (_13.firstChild||_15);
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| 110 | }else{
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| 111 | var _16=_13.getAttribute(_14);
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| 112 | return (_16!==undefined)?_16:_15; |
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| 113 | } |
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| 114 | },getValues:function(_17,_18){ |
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| 115 | this._assertIsItem(_17);
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| 116 | this._assertIsAttribute(_18);
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| 117 | var _19=[];
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| 118 | if(_18=="children"){ |
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| 119 | for(var i=0;i<_17.childNodes.length;++i){ |
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| 120 | _19.push(_17.childNodes[i]); |
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| 121 | } |
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| 122 | }else{
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| 123 | if(_17.getAttribute(_18)!==null){ |
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| 124 | _19.push(_17.getAttribute(_18)); |
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| 125 | } |
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| 126 | } |
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| 127 | return _19;
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| 128 | },getAttributes:function(_1a){ |
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| 129 | this._assertIsItem(_1a);
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| 130 | var _1b=[];
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| 131 | var _1c=_1a;
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| 132 | var _1d=_1c.attributes;
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| 133 | for(var i=0;i<_1d.length;++i){ |
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| 134 | var _1e=_1d.item(i);
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| 135 | _1b.push(_1e.nodeName); |
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| 136 | } |
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| 137 | if(_1c.childNodes.length>0){ |
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| 138 | _1b.push("children");
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| 139 | } |
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| 140 | return _1b;
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| 141 | },hasAttribute:function(_1f,_20){ |
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| 142 | return (this.getValues(_1f,_20).length>0); |
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| 143 | },containsValue:function(_21,_22,_23){ |
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| 144 | var _24=undefined; |
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| 145 | if(typeof _23==="string"){ |
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| 146 | _24=dojo.data.util.filter.patternToRegExp(_23,false);
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| 147 | } |
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| 148 | return this._containsValue(_21,_22,_23,_24); |
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| 149 | },_containsValue:function(_25,_26,_27,_28){ |
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| 150 | var _29=this.getValues(_25,_26); |
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| 151 | for(var i=0;i<_29.length;++i){ |
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| 152 | var _2a=_29[i];
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| 153 | if(typeof _2a==="string"&&_28){ |
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| 154 | return (_2a.match(_28)!==null); |
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| 155 | }else{
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| 156 | if(_27===_2a){
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| 157 | return true; |
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| 158 | } |
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| 159 | } |
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| 160 | } |
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| 161 | return false; |
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| 162 | },isItem:function(_2b){ |
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| 163 | return (_2b&&_2b.nodeType==1&&_2b.tagName=="outline"&&_2b.ownerDocument===this._xmlData); |
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| 164 | },isItemLoaded:function(_2c){ |
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| 165 | return this.isItem(_2c); |
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| 166 | },loadItem:function(_2d){ |
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| 167 | },getLabel:function(_2e){ |
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| 168 | if(this.isItem(_2e)){ |
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| 169 | return this.getValue(_2e,this.label); |
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| 170 | } |
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| 171 | return undefined; |
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| 172 | },getLabelAttributes:function(_2f){ |
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| 173 | return [this.label]; |
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| 174 | },_fetchItems:function(_30,_31,_32){ |
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| 175 | var _33=this; |
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| 176 | var _34=function(_35,_36){ |
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| 177 | var _37=null; |
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| 178 | if(_35.query){
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| 179 | _37=[]; |
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| 180 | var _38=_35.queryOptions?_35.queryOptions.ignoreCase:false; |
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| 181 | var _39={};
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| 182 | for(var key in _35.query){ |
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| 183 | var _3a=_35.query[key];
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| 184 | if(typeof _3a==="string"){ |
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| 185 | _39[key]=dojo.data.util.filter.patternToRegExp(_3a,_38); |
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| 186 | } |
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| 187 | } |
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| 188 | for(var i=0;i<_36.length;++i){ |
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| 189 | var _3b=true; |
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| 190 | var _3c=_36[i];
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| 191 | for(var key in _35.query){ |
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| 192 | var _3a=_35.query[key];
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| 193 | if(!_33._containsValue(_3c,key,_3a,_39[key])){
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| 194 | _3b=false;
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| 195 | } |
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| 196 | } |
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| 197 | if(_3b){
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| 198 | _37.push(_3c); |
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| 199 | } |
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| 200 | } |
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| 201 | }else{
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| 202 | if(_36.length>0){ |
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| 203 | _37=_36.slice(0,_36.length);
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| 204 | } |
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| 205 | } |
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| 206 | _31(_37,_35); |
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| 207 | }; |
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| 208 | if(this._loadFinished){ |
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| 209 | _34(_30,this._getItemsArray(_30.queryOptions));
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| 210 | }else{
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| 211 | if(this._loadInProgress){ |
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| 212 | this._queuedFetches.push({args:_30,filter:_34}); |
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| 213 | }else{
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| 214 | if(this.url!==""){ |
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| 215 | this._loadInProgress=true; |
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| 216 | var _3d={url:_33.url,handleAs:"xml",preventCache:_33.urlPreventCache}; |
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| 217 | var _3e=dojo.xhrGet(_3d);
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| 218 | _3e.addCallback(function(_3f){
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| 219 | _33._processRawXmlTree(_3f); |
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| 220 | _34(_30,_33._getItemsArray(_30.queryOptions)); |
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| 221 | _33._handleQueuedFetches(); |
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| 222 | }); |
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| 223 | _3e.addErrback(function(_40){
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| 224 | throw _40;
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| 225 | }); |
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| 226 | }else{
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| 227 | if(this._opmlData){ |
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| 228 | this._processRawXmlTree(this._opmlData); |
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| 229 | this._opmlData=null; |
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| 230 | _34(_30,this._getItemsArray(_30.queryOptions));
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| 231 | }else{
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| 232 | throw new Error("dojox.data.OpmlStore: No OPML source data was provided as either URL or XML data input."); |
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| 233 | } |
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| 234 | } |
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| 235 | } |
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| 236 | } |
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| 237 | },getFeatures:function(){ |
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| 238 | var _41={"dojo.data.api.Read":true,"dojo.data.api.Identity":true}; |
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| 239 | return _41;
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| 240 | },getIdentity:function(_42){ |
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| 241 | if(this.isItem(_42)){ |
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| 242 | for(var i in this._identityMap){ |
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| 243 | if(this._identityMap[i]===_42){ |
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| 244 | return i;
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| 245 | } |
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| 246 | } |
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| 247 | } |
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| 248 | return null; |
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| 249 | },fetchItemByIdentity:function(_43){ |
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| 250 | if(!this._loadFinished){ |
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| 251 | var _44=this; |
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| 252 | if(this.url!==""){ |
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| 253 | if(this._loadInProgress){ |
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| 254 | this._queuedFetches.push({args:_43}); |
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| 255 | }else{
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| 256 | this._loadInProgress=true; |
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| 257 | var _45={url:_44.url,handleAs:"xml"}; |
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| 258 | var _46=dojo.xhrGet(_45);
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| 259 | _46.addCallback(function(_47){
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| 260 | var _48=_43.scope?_43.scope:dojo.global;
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| 261 | try{
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| 262 | _44._processRawXmlTree(_47); |
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| 263 | var _49=_44._identityMap[_43.identity];
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| 264 | if(!_44.isItem(_49)){
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| 265 | _49=null;
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| 266 | } |
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| 267 | if(_43.onItem){
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| 268 | _43.onItem.call(_48,_49); |
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| 269 | } |
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| 270 | _44._handleQueuedFetches(); |
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| 271 | } |
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| 272 | catch(error){
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| 273 | if(_43.onError){
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| 274 | _43.onError.call(_48,error); |
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| 275 | } |
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| 276 | } |
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| 277 | }); |
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| 278 | _46.addErrback(function(_4a){
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| 279 | this._loadInProgress=false; |
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| 280 | if(_43.onError){
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| 281 | var _4b=_43.scope?_43.scope:dojo.global;
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| 282 | _43.onError.call(_4b,_4a); |
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| 283 | } |
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| 284 | }); |
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| 285 | } |
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| 286 | }else{
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| 287 | if(this._opmlData){ |
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| 288 | this._processRawXmlTree(this._opmlData); |
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| 289 | this._opmlData=null; |
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| 290 | var _4c=this._identityMap[_43.identity]; |
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| 291 | if(!_44.isItem(_4c)){
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| 292 | _4c=null;
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| 293 | } |
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| 294 | if(_43.onItem){
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| 295 | var _4d=_43.scope?_43.scope:dojo.global;
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| 296 | _43.onItem.call(_4d,_4c); |
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| 297 | } |
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| 298 | } |
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| 299 | } |
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| 300 | }else{
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| 301 | var _4c=this._identityMap[_43.identity]; |
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| 302 | if(!this.isItem(_4c)){ |
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| 303 | _4c=null;
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| 304 | } |
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| 305 | if(_43.onItem){
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| 306 | var _4d=_43.scope?_43.scope:dojo.global;
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| 307 | _43.onItem.call(_4d,_4c); |
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| 308 | } |
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| 309 | } |
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| 310 | },getIdentityAttributes:function(_4e){ |
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| 311 | return null; |
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| 312 | },_handleQueuedFetches:function(){ |
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| 313 | if(this._queuedFetches.length>0){ |
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| 314 | for(var i=0;i<this._queuedFetches.length;i++){ |
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| 315 | var _4f=this._queuedFetches[i]; |
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| 316 | var _50=_4f.args;
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| 317 | var _51=_4f.filter;
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| 318 | if(_51){
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| 319 | _51(_50,this._getItemsArray(_50.queryOptions));
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| 320 | }else{
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| 321 | this.fetchItemByIdentity(_50);
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| 322 | } |
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| 323 | } |
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| 324 | this._queuedFetches=[];
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| 325 | } |
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| 326 | },close:function(_52){ |
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| 327 | }}); |
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| 328 | dojo.extend(dojox.data.OpmlStore,dojo.data.util.simpleFetch); |
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| 329 | } |