ext window 速度优化

来源：互联网发布：互联网寒冬知乎编辑：程序博客网时间：2024/05/21 14:49

关闭时，尽量使用hide事件，把new Ext.Window()设置为全局对象，在要调用的界面进行创建一次后，把创建对象变量保存起来，以便下次使用，只对数据做操作。

CPC.WFBILL = Ext.extend(CPC.BaseForm,{
   selm:null,
   procs:null,
   ClassName: null,
   formclass:null,
   init: function(){
       CPC.WFBILL.superclass.init.call(this);
       try {
           var objconf={};
           if(this.procs)
               objconf = {operright:this.procs.operright};
           this.billObj=null;
           if(this.formclass != null){
               this.billObj= this.formclass;
           }else{
               this.billObj= eval('new '+this.ClassName+'(objconf)');
           }
       }catch(e){alert("脚本加载失败，请检查网络连接或刷新浏览器!"+e.message)}
       var panel=this.billObj.getPanel();
       var bh=document.body.clientHeight*0.9;
       if(bh<500)bh=500;
        this.win=new Ext.Window({
           //width:920,
           ////modify by daiwei. 2011-05-23.修改点击单据号弹出框宽度.
           width:'90%',//mainForm.tabPanel.getSize().width-120,
           maximizable:true,
           animateTarget:true,
           draggable:false,
           expandOnShow:false,
           monitorResize:false,
           resizable:false,
           //maximized:true,
           height: 570,
           title: this.selm.get('objname'),
           layout:'fit',
           modal:true,
           buttons:[{text:'取消',scope:this,handler:function(){this.win.hide()}}],
           items:panel,
           closeAction:'hide',
           listeners : {
                   scope : this,
                   'beforeshow' : function(a,b) {
                       if(this.formclass == null){
                               this.billObj.is_billwf=true;
                                this.billObj.selectFirstRow =true;
                                this.billObj.setSqlWhere(this.billObj.pkFieldName+"= "+ this.selm.get('objid'));
                                this.billObj.search();
                           }
                   },/*'show':function(){
                           billObj.panel.setActiveTab(billObj.wfPanel);
                   },*/'maximize':function(win){
                       win.doLayout();
                   },'hide':function(){
                       if (this.callback)
                           this.callback.call(this);
                   }
               }
        });

       if(panel.topToolbar)
           this.disableBar(panel.topToolbar)
   },
   search_data:function(ClassName,selm,formclass){
       var wftempid_new=selm.data['wftempid'];
       var wftempid_old=this.selm.data['wftempid'];
       this.ClassName = ClassName;
       this.selm =selm;
       this.formclass=formclass;
       this.win.setTitle(this.selm.get('objname'));
       if(wftempid_new != wftempid_old || this.formclass != null){
           try {
               var objconf={};
               if(this.procs)
                   objconf = {operright:this.procs.operright};
               this.billObj=null;
               if(this.formclass != null){
                   this.billObj= this.formclass;
               }else{
                   this.billObj= eval('new '+this.ClassName+'(objconf)');
               }
           }catch(e){alert("脚本加载失败，请检查网络连接或刷新浏览器!"+e.message)}
           var panel=this.billObj.getPanel();
           this.win.remove(this.win.items.items[0]);
           this.win.add(panel);
           this.win.doLayout();
       }
   },
   //禁用工具栏按钮
   disableBar: function(bbar){
       if(bbar.items){
           bbar.items.each(function(button) {
               if(button.setDisabled)
                   button.setDisabled(true);
           }, this);
       }else{
           for (var i = 0; i < bbar.length; i++) {
               if(bbar[i].setDisabled)bbar[i].setDisabled(true);
           }
       }
   },
   getPanel: function(){
       return this.win;
   });

调用对象方法:

var self = this;

    if(typeof this.wfbill == 'undefined'){
                                               this.wfbill = new CPC.WFBILL({
                                                   ClassName : confobj.formclass,
                                                   selm : selm,
                                                   formclass:formclass,
                                                   callback:function(){
                                                        self.refresh2();
                                                   }
                                               });
                                       }else{
                                           this.wfbill.search_data(confobj.formclass,selm,formclass);
                                       }
                                       this.wfbill.getPanel().show();