Extjs 4.2 树结点右键菜单（全选，反选，撤销)

自己写的最新版本extjs4.2的树结点的操作，记录一下，以后可能会用到。

var tree = new Ext.tree.TreePanel({flex: 1,animate: true,  autoScroll: true,anchor: '100% 93%',store: new Ext.data.TreeStore({root:{expanded: true,text:'A',children:[{expanded: true,text:'1',children:[{text:'2',icon:'sysimg/icon/image.gif',leaf:true,id:'1_1',checked:false},{text:'3',icon:'sysimg/icon/layout.gif',leaf:true,id:'1_2',checked:false},{text:'4',icon:'sysimg/icon/image_add.png',leaf:true,id:'1_3',checked:false},{text:'5',icon:'sysimg/icon/out.gif',leaf:true,id:'1_4',checked:false},{text:'6',icon:'sysimg/icon/leave.gif',leaf:true,id:'1_5',checked:false},{text:'7',icon:'sysimg/icon/preview_16x16.gif',leaf:true,id:'1_5',checked:false},{text:'8',icon:'sysimg/icon/upload.gif',leaf:true,id:'1_7',checked:false},{text:'9',icon:'sysimg/icon/users--exclamation.gif',leaf:true,id:'1_8',checked:false},{text:'10',icon:'sysimg/icon/Pixies_020.gif',leaf:true,id:'1_9',checked:false}]},{expanded: true,text:'B',children:[{text:'11',icon:'sysimg/icon/Pixies_023.gif',leaf:true,id:'2_1',checked:false},{text:'12',icon:'sysimg/icon/Pixies_017.gif',leaf:true,id:'2_2',checked:false}]},{expanded: true,text:'C',children:[{text:'13',icon:'sysimg/icon/users--arrow.gif',leaf:true,id:'3_1',checked:false},{text:'14',icon:'sysimg/icon/users.gif',leaf:true,id:'3_2',checked:false},{text:'15',icon:'sysimg/icon/hammer.gif',leaf:true,id:'3_3',checked:false},{text:'16',icon:'sysimg/icon/bandaid--arrow.gif',leaf:true,id:'3_4',checked:false},{text:'17',icon:'sysimg/icon/user_go.gif',leaf:true,id:'3_5',checked:false},{text:'18',icon:'sysimg/icon/cog.gif',leaf:true,id:'3_6',checked:false},{text:'19',icon:'sysimg/icon/publish.gif',leaf:true,id:'3_7',checked:false},{text:'20',icon:'sysimg/icon/users--exclamation.gif',leaf:true,id:'3_8',checked:false},{text:'21',icon:'sysimg/icon/user-black.gif',leaf:true,id:'3_9',checked:false},{text:'22',icon:'sysimg/icon/leaf.gif',leaf:true,id:'3_10',checked:false}]}]}}),listeners:{'itemcontextmenu':function(menutree,record,items,index,e){e.preventDefault();e.stopEvent();//判断是否为叶子结点if(record.data.leaf==false){var nodemenu = new Ext.menu.Menu({floating:true,items:[{text:'全选',handler:function(){for( var i =0;i<record.data.children.length;++i){//设置结点checked属性为truerecord.childNodes[i].set('checked',true);}}},{text:'反选',handler:function(){for( var i =0;i<record.data.children.length;++i){if(record.childNodes[i].data.checked == false) {//设置结点checked属性为truerecord.childNodes[i].set('checked',true)}else {//设置结点checked属性为truerecord.childNodes[i].set('checked',false);}}}},{text:'撤销全部',handler:function(){for( var i =0;i<record.data.children.length;++i){//设置结点checked属性为falserecord.childNodes[i].set('checked',false);}}}]});nodemenu.showAt(e.getXY());}}}});