Extjs4.x Ext.tree.Panel基本树控件的使用案例、源码

Ext.define('WMS.model.VPTree', {
extend: 'Ext.data.Model',
fields: [
{ name: 'url', type: 'string' },
{ name: 'text', type: 'string' },
{ name: 'key', type: 'string' }
]
});

/// <reference path="http://www.cnblogs.com/Ext.js" />
Ext.define("WMS.store.VPTreeMenu", {
extend: 'Ext.data.TreeStore',
autoLoad: true,
model: 'WMS.model.VPTree',
root: {
text: '功能节点',
id: 'root',
expanded: true
},
proxy: {
type: 'ajax',
api: {
read: '/Admin/Main/GetMenu'
},
reader: {
type: 'json'
}
}
});

Ext.define("WMS.view.Tree", {
extend: 'Ext.tree.Panel',
alias: 'widget.wmsTree',
title: "功能导航",
margins: '0 0 0 3',
width: 200,
region: 'west',
animate: true,
store: 'VPTreeMenu',
autoScroll: true,
rootVisible: false,
loadMsg:true,
collapsible: true,//是否可以折叠
split: true
});

/// <summary>
/// 获取系统的模块
/// </summary>
/// <returns></returns>
public string GetMenuModule()
{
//根据用户获取所有的角色
//根据角色获取所有的功能
//根据SystemId构造树
List<WMS_Module> Module = dal.GetMenu(AuthToken.CurrentUser.Id.ToString()).ToList();
List<WMS_Module> fatherList = Module.FindAll(c => c.ParentId == AuthToken.SystemGuid).OrderBy(c => c.ModuleIndex).ToList();
List<WMS_Module> childList = Module.FindAll(c => c.ParentId != AuthToken.SystemGuid).OrderBy(c => c.ModuleIndex).ToList();
return "[" + CreateMenuTree(fatherList, childList).ToString().TrimEnd(',') + "]";
}

//递归
private StringBuilder CreateMenuTree(List<WMS_Module> fatherList, List<WMS_Module> childList)
{
StringBuilder sb = new StringBuilder();
foreach (WMS_Module menu in fatherList)
{
StringBuilder sub = new StringBuilder();
//核心
string guid = menu.Id.ToString("D").ToUpper();
List<WMS_Module> stack = childList.FindAll(c => c.ParentId == guid).OrderBy(c => c.ModuleIndex).ToList();
if (stack.Count > 0) //说明是父节点
{
sub.Append("{text:'" + menu.ModuleName + "',expanded:true,id:'" + menu.Id.ToString() + "',children: [");
sub.Append(CreateMenuTree(stack, childList).ToString().TrimEnd(',') + "]},");
}
else //说明是子节点
{
sub.Append("{text:'" + menu.ModuleName + "',url:'" + menu.ModuleUrl + "',key:'"+menu.ModuleKey+"',leaf:true,iconCls:'" + menu.ModuleIcon + "',id:'" + menu.Id.ToString() + "'},");
}
sb.Append(sub);
}
return sb;
}