Extjs Tree容易使用

一、

效果图:

js部分：

var isgn = false;
		var modifyColumn = new Ext.Button({
	   	 	id:'modifyColumn',
	        text: "展开",
	        iconCls:'btn_expand',
	        listeners:{
			 	click:function(){
		 			var gridM = Ext.getCmp('grid').getColumnModel();
		 			for (var i = 14 ; i < 26 ; i++){
		 				gridM.setHidden(i,isgn);
		 			}
		 			if(isgn){
		 				this.setText("展开");
		 				this.setIconClass('btn_expand');
			 			isgn = false;
			 		}else{
			 			this.setText("收缩");
			 			this.setIconClass('btn_collapse');
				 		isgn = true;
				 	}
		 		}
		 	}
	    });

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二、Tree

效果图：

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js部分：

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function loadTree(){
		try{
		 //重写TreePanel,支持check复选框
		 Ext.override(Ext.tree.TreeNodeUI, {
			toggleCheck:function (value) {
			var cb = this.checkbox;
			if (cb) {
				cb.checked = (value === undefined ? !cb.checked : value);
				this.node.attributes.checked = cb.checked;
				this.fireEvent("checkchange", this.node, cb.checked);
				}
			}
		}); 
		if(treePanel)return ;
		
		treePanel=new Ext.tree.TreePanel({
			id: treePanel,
			xtype:'treepanel',
			split:true,
			border:true,
			width:300,
			height:500,
			collapsible:false,
			autoScroll:true,
			animate: true,// 动画效果
      enableDD: false,// 是否支持拖拽效果
      containerScroll: true,// 是否支持滚动条
			bodyStyle : 'margin:0px',
			loadMask: {msg: '数据加载中...'},
			applyTo:'tree',
			
			//定义根节点  异步加载根节点 
			root: new Ext.tree.AsyncTreeNode({id:'root', expanded: true}),
			loader: new Ext.tree.TreeLoader({dataUrl: urlpath + '/project/manage/edit/uItemMember.do?action=getDptUsers&check=false'}),
			
			rootVisible:false,
			
			// 设置树的点击事件
			listeners: {
				//单击选中复选框,在点击添加按钮 添加人员
		        'click': function(node) {
		        	if(!node.isLeaf){
		        		dptId = node.id;
						    dptName = node.text;
						   //查询部门下的人员
					     store.load({params:{
							     dptId:dptId,
							     dpt:dptName
						   }}); 
		        	}else{
		        		//设置UI状态为选中状态
				    	   node.getUI().toggleCheck(true);
				    	  //设置节点属性为选中状态
				    	   node.attributes.checked = true;
		        	}
		    	},
		    	//双击直接添加人员
		    	'dblclick':function(node,e){
		    		if(!node.id != 1 && node.isLeaf()){
		    			var userid = node.id.substring(0,node.id.length-6);//去掉UItemMemberController.java中添加的666888
		    			var name = node.text;
		    			var dpt = node.parentNode.text;
		    			var phone = node.attributes.phone;
		    			var email = node.attributes.email;
		    			var roleid = '';
		    			
		    			var record = new Ext.data.Record({
							userid : userid,
							name : name,
							phone : phone,
							email : email,
							roleid : roleid,
							dpt : dpt
						});

					   var rightstore = Ext.getCmp("rightPanel").getStore();
					   var arr = new Array();
					   for(var ii=0; ii < rightstore.getCount(); ii++){
						   var rightRecord = rightstore.getAt(ii);
						   var userId = rightRecord.get("userid");
						   arr[ii] = userId;
						   
					   }
					   var j = in_array(arr, userid);
					   if(j == -1){
					   		var len = rightstore.getCount();
						   	if((len>0 && isMultiple=='0') ||'${pmName}' == 'yes'){
								rightStore.removeAll();
						   	}
					    	rightStore.insert(rightStore.getCount(),record);
					   }
		    		}
		        }
			}
		});
		//第一个true是自动展开所有子节点，第二个true是以动画效果展开树  
		//treePanel.getRootNode().expand(true,true); 
		
		if('${pmName}' == 'yes' ||'${isMultiple}'=='0'){ //修改项目经理
			//使单位树上的复选框只可选中一个
			treePanel.on('checkchange', function(node, checked) {       
	            node.attributes.checked = checked;   
	          var chs  = treePanel.getChecked();  
	          for(var i = 0; i < chs.length; i++) {  
	             if (chs[i].attributes['id'] != node.attributes['id']){  
	                chs[i].ui.toggleCheck(!checked);   
	             }  
	        }}, treePanel); 	
		}
	  }catch(e){Ext.Msg.alert("提示错误信息",e.message);}	
	};

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后台java部分：

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StringBuffer sbfUser = new StringBuffer();
		sbfUser.append("[");
		if (users != null && users.size() > 0) {
			for (User user : users) {
				sbfUser.append("{");
				sbfUser.append("id:'" + user.getId() + "666888'," + "sex:'"
						+ user.getSex() + "'," + "phone:'" + user.getMphone()
						+ "'," + "email:'" + user.getEmail() + "'," + "text:'"
						+ user.getName() + "'," + "leaf:" + true + ","
						+ "icon:'" + basePath
						+ "/themes/default/images/employee.png" + "',"
						+ "checked:" + checked + "," + "singleClickExpand:"
						+ true);// ",checked:"+checked+ 树上出现复选框
				sbfUser.append("},");
			}
		}

		StringBuffer sbfDpt = new StringBuffer();
		boolean leaf = false;
		if (subDptList != null && subDptList.size() > 0) {
			for (Dpt subDpt : subDptList) {
				sbfDpt.append("{");
				if (subDpt.getDptid() == 1) {
					sbfDpt.append("id:'" + subDpt.getDptid() + "',text:'"
							+ subDpt.getDptname() + "',expanded:true,leaf:"
							+ leaf + ",singleClickExpand:" + true);
				} else {
					sbfDpt.append("id:'" + subDpt.getDptid() + "',text:'"
							+ subDpt.getDptname() + "',leaf:" + leaf
							+ ",singleClickExpand:" + true);// ",checked:"+checked 树上出现复选框
				}

				sbfDpt.append("},");
			}
			String str = sbfDpt.substring(0, sbfDpt.lastIndexOf(","));
			//清空sbfDpt下一次再使用
			sbfDpt.delete(0, sbfDpt.length());
			sbfDpt.append(str);
		}

		StringBuffer sbfDptUser = new StringBuffer();
		sbfDptUser.append(sbfUser).append(sbfDpt).append("]");

		AjaxUtils._write(response, sbfDptUser);

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