data.js

ext js demo ext学习资料

Ext.data.Field=function(_1){if(typeof _1=="string"){_1={name:_1};}Ext.apply(this,_1);if(!this.type){this.type="auto";}var st=Ext.data.SortTypes;if(typeof this.sortType=="string"){this.sortType=st[this.sortType];}if(!this.sortType){switch(this.type){case"string":this.sortType=st.asUCString;break;case"date":this.sortType=st.asDate;break;default:this.sortType=st.none;}}var _3=/[\$,%]/g;if(!this.convert){var cv,_5=this.dateFormat;switch(this.type){case"":case"auto":case undefined:cv=function(v){return v;};break;case"string":cv=function(v){return(v===undefined||v===null)?"":String(v);};break;case"int":cv=function(v){return v!==undefined&&v!==null&&v!==""?parseInt(String(v).replace(_3,""),10):"";};break;case"float":cv=function(v){return v!==undefined&&v!==null&&v!==""?parseFloat(String(v).replace(_3,""),10):"";};break;case"bool":case"boolean":cv=function(v){return v===true||v==="true"||v==1;};break;case"date":cv=function(v){if(!v){return"";}if(v instanceof Date){return v;}if(_5){if(_5=="timestamp"){return new Date(v*1000);}return Date.parseDate(v,_5);}var _c=Date.parse(v);return _c?new Date(_c):null;};break;}this.convert=cv;}};Ext.data.Field.prototype={dateFormat:null,defaultValue:"",mapping:null,sortType:null,sortDir:"ASC"};

Ext.data.DataReader=function(_1,_2){this.meta=_1;this.recordType=_2 instanceof Array?Ext.data.Record.create(_2):_2;};Ext.data.DataReader.prototype={};

Ext.data.DataProxy=function(){this.addEvents({beforeload:true,load:true,loadexception:true});Ext.data.DataProxy.superclass.constructor.call(this);};Ext.extend(Ext.data.DataProxy,Ext.util.Observable);

Ext.data.MemoryProxy=function(_1){Ext.data.MemoryProxy.superclass.constructor.call(this);this.data=_1;};Ext.extend(Ext.data.MemoryProxy,Ext.data.DataProxy,{load:function(_2,_3,_4,_5,_6){_2=_2||{};var _7;try{_7=_3.readRecords(this.data);}catch(e){this.fireEvent("loadexception",this,_6,null,e);_4.call(_5,null,_6,false);return;}_4.call(_5,_7,_6,true);},update:function(_8,_9){}});

Ext.data.HttpProxy=function(_1){Ext.data.HttpProxy.superclass.constructor.call(this);this.conn=_1;this.useAjax=!_1||!_1.events;};Ext.extend(Ext.data.HttpProxy,Ext.data.DataProxy,{getConnection:function(){return this.useAjax?Ext.Ajax:this.conn;},load:function(_2,_3,_4,_5,_6){if(this.fireEvent("beforeload",this,_2)!==false){var o={params:_2||{},request:{callback:_4,scope:_5,arg:_6},reader:_3,callback:this.loadResponse,scope:this};if(this.useAjax){Ext.applyIf(o,this.conn);if(this.activeRequest){Ext.Ajax.abort(this.activeRequest);}this.activeRequest=Ext.Ajax.request(o);}else{this.conn.request(o);}}else{_4.call(_5||this,null,_6,false);}},loadResponse:function(o,_9,_a){delete this.activeRequest;if(!_9){this.fireEvent("loadexception",this,o,_a);o.request.callback.call(o.request.scope,null,o.request.arg,false);return;}var _b;try{_b=o.reader.read(_a);}catch(e){this.fireEvent("loadexception",this,o,_a,e);o.request.callback.call(o.request.scope,null,o.request.arg,false);return;}this.fireEvent("load",this,o,o.request.arg);o.request.callback.call(o.request.scope,_b,o.request.arg,true);},update:function(_c){},updateResponse:function(_d){}});

Ext.data.ScriptTagProxy=function(_1){Ext.data.ScriptTagProxy.superclass.constructor.call(this);Ext.apply(this,_1);this.head=document.getElementsByTagName("head")[0];};Ext.data.ScriptTagProxy.TRANS_ID=1000;Ext.extend(Ext.data.ScriptTagProxy,Ext.data.DataProxy,{timeout:30000,callbackParam:"callback",nocache:true,load:function(_2,_3,_4,_5,_6){if(this.fireEvent("beforeload",this,_2)!==false){var p=Ext.urlEncode(Ext.apply(_2,this.extraParams));var _8=this.url;_8+=(_8.indexOf("?")!=-1?"&":"?")+p;if(this.nocache){_8+="&_dc="+(new Date().getTime());}var _9=++Ext.data.ScriptTagProxy.TRANS_ID;var _a={id:_9,cb:"stcCallback"+_9,scriptId:"stcScript"+_9,params:_2,arg:_6,url:_8,callback:_4,scope:_5,reader:_3};var _b=this;window[_a.cb]=function(o){_b.handleResponse(o,_a);};_8+=String.format("&{0}={1}",this.callbackParam,_a.cb);if(this.autoAbort!==false){this.abort();}_a.timeoutId=this.handleFailure.defer(this.timeout,this,[_a]);var _d=document.createElement("script");_d.setAttribute("src",_8);_d.setAttribute("type","text/javascript");_d.setAttribute("id",_a.scriptId);this.head.appendChild(_d);this.trans=_a;}else{_4.call(_5||this,null,_6,false);}},isLoading:function(){return this.trans?true:false;},abort:function(){if(this.isLoading()){this.destroyTrans(this.trans);}},destroyTrans:function(_e,_f){this.head.removeChild(document.getElementById(_e.scriptId));clearTimeout(_e.timeoutId);if(_f){window[_e.cb]=undefined;try{delete window[_e.cb];}catch(e){}}else{window[_e.cb]=function(){window[_e.cb]=undefined;try{delete window[_e.cb];}catch(e){}};}},handleResponse:function(o,_11){this.trans=false;this.destroyTrans(_11,true);var _12;try{_12=_11.reader.readRecords(o);}catch(e){this.fireEvent("loadexception",this,o,_11.arg,e);_11.callback.call(_11.scope||window,null,_11.arg,false);return;}this.fireEvent("load",this,o,_11.arg);_11.callback.call(_11.scope||window,_12,_11.arg,true);},handleFailure:function(_13){this.trans=false;this.destroyTrans(_13,false);this.fireEvent("loadexception",this,null,_13.arg);_13.callback.call(_13.scope||window,null,_13.arg,false);}});

Ext.data.JsonReader=function(_1,_2){_1=_1||{};Ext.data.JsonReader.superclass.constructor.call(this,_1,_2||_1.fields);};Ext.extend(Ext.data.JsonReader,Ext.data.DataReader,{read:function(_3){var _4=_3.responseText;var o=eval("("+_4+")");if(!o){throw{message:"JsonReader.read: Json object not found"};}if(o.metaData){delete this.ef;this.meta=o.metaData;this.recordType=Ext.data.Record.create(o.metaData.fields);this.onMetaChange(this.meta,this.recordType,o);}return this.readRecords(o);},onMetaChange:function(_6,_7,o){},simpleAccess:function(_9,_a){return _9[_a];},getJsonAccessor:function(){var re=/[\[\.]/;return function(_c){try{return(re.test(_c))?new Function("obj","return obj."+_c):function(_d){return _d[_c];};}catch(e){}return Ext.emptyFn;};}(),readRecords:function(o){this.jsonData=o;var s=this.meta,_10=this.recordType,f=_10.prototype.fields,fi=f.items,fl=f.length;if(!this.ef){if(s.totalProperty){this.getTotal=this.getJsonAccessor(s.totalProperty);}if(s.successProperty){this.getSuccess=this.getJsonAccessor(s.successProperty);}this.getRoot=s.root?this.getJsonAccessor(s.root):function(p){return p;};if(s.id){var g=this.getJsonAccessor(s.id);this.getId=function(rec){var r=g(rec);return(r===undefined||r==="")?null:r;};}else{this.getId=function(){return null;};}this.ef=[];for(var i=0;i<fl;i++){f=fi[i];var map=(f.mapping!==undefined&&f.mapping!==null)?f.mapping:f.name;this.ef[i]=this.getJsonAccessor(map);}}var _1a=this.getRoot(o),c=_1a.length,_1c=c,_1d=true;if(s.totalProperty){var v=parseInt(this.getTotal(o),10);if(!isNaN(v)){_1c=v;}}if(s.successProperty){var v=this.getSuccess(o);if(v===false||v==="false"){_1d=false;}}var _1f=[];for(var i=0;i<c;i++){var n=_1a[i];var _21={};var id=this.getId(n);for(var j=0;j<fl;j++){f=fi[j];var v=this.ef[j](n);_21[f.name]=f.convert((v!==undefined)?v:f.defaultValue);}var _24=new _10(_21,id);_24.json=n;_1f[i]=_24;}return{success:_1d,records:_1f,totalRecords:_1c};}});

Ext.data.XmlReader=function(_1,_2){_1=_1||{};Ext.data.XmlReader.superclass.constructor.call(this,_1,_2||_1.fields);};Ext.extend(Ext.data.XmlReader,Ext.data.DataReader,{read:function(_3){var _4=_3.responseXML;if(!_4){throw{message:"XmlReader.read: XML Document not available"};}return this.readRecords(_4);},readRecords:function(_5){this.xmlData=_5;var _6=_5.documentElement||_5;var q=Ext.DomQuery;var _8=this.recordType,_9=_8.prototype.fields;var _a=this.meta.id;var _b=0,_c=true;if(this.meta.totalRecords){_b=q.selectNumber(this.meta.totalRecords,_6,0);}if(this.meta.success){var sv=q.selectValue(this.meta.success,_6,true);_c=sv!==false&&sv!=="false";}var _e=[];var ns=q.select(this.meta.record,_6);for(var i=0,len=ns.length;i<len;i++){var n=ns[i];var _13={};var id=_a?q.selectValue(_a,n):undefined;for(var j=0,_16=_9.length;j<_16;j++){var f=_9.items[j];var v=q.selectValue(f.mapping||f.name,n,f.defaultValue);v=f.convert(v);_13[f.name]=v;}var _19=new _8(_13,id);_19.node=n;_e[_e.length]=_19;}return{success:_c,records:_e,totalRecords:_b||_e.length};}});

Ext.data.ArrayReader=function(_1,_2){Ext.data.ArrayReader.superclass.constructor.call(this,_1,_2);};Ext.extend(Ext.data.ArrayReader,Ext.data.JsonReader,{readRecords:function(o){var _4=this.meta?this.meta.id:null;var _5=this.recordType,_6=_5.prototype.fields;var _7=[];var _8=o;for(var i=0;i<_8.length;i++){var n=_8[i];var _b={};var id=((_4||_4===0)&&n[_4]!==undefined&&n[_4]!==""?n[_4]:null);for(var j=0,_e=_6.length;j<_e;j++){var f=_6.items[j];var k=f.mapping!==undefined&&f.mapping!==null?f.mapping:j;var v=n[k]!==undefined?n[k]:f.defaultValue;v=f.convert(v);_b[f.name]=v;}var _12=new _5(_b,id);_12.json=n;_7[_7.length]=_12;}return{records:_7,totalRecords:_7.length};}});