Ext复选框树的操作，节点清空

首先创建了一个树，有一个对树所有复选框清空的方法。

1.  //初始化机构树
2.  var tree;
3. var hasSearchResult=false;
4. function initDeptFirstNode()
5. {
6.     //在加载树的时候初始化自动搜索控件
7.     initAutoComplete();
8.     var hasloadNodeHashTable=new Hashtable();
9.     Tree = Ext.tree;
10.     tree = new Tree.TreePanel({
11.         el:'div_center1_left_carimonitor1_1', 
12.         autoScroll:true,     
13.         height:'100%',
14.         animate:false,
15.         border :false
16.         }); 
17.     var root = new Tree.TreeNode({
18.         checked:false,   
19.         expanded:true,      
20.         icon:"images/menu/jigou2.gif"
21.     });
22.     OrgTreeManage.getOrgTreeRoot(function(value){
23.         //alert("从登录信息中得到的机构代号为："+value.c_orgno);
24.           root.setText(value.c_orgshortname);
25.           root.id=value.c_orgno;         
26.         }); 
27.     tree.setRootNode(root);
28.     tree.render();
29.     //单击的时候给地图端送数据，加载机构信息
30.     tree.on("click",function(node)
31.      {      
32.      });
33.      //双击拓展树节点
34.      tree.on("dblclick",function(node)
35.     {       
36.         node.getUI().checkbox.checked=false;    
37.         if(!hasloadNodeHashTable.contains(node.id)){
38.             hasloadNodeHashTable.add(node.id,node); 
39.              OrgTreeManage.getOrgTreeLeaf(node.id,function(value){
40.                 for(var i=0;i<value.length;i++){
41.                     var newnode=new Ext.tree.TreeNode({
42.                         id:value[i].c_orgno,
43.                         expanded:true,
44.                         checked:false,                      
45.                         text:value[i].c_orgshortname,
46.                         icon:"images/menu/jigou2.gif"
47.                     });
48.                     node.appendChild(newnode);
49.                 }
50.              });
51.         }   
52.     });
53.     //树的勾选操作 
54.     //这里执行两边checkchange事件来检查节点操作，移除未勾选的节点
55.      var nodeArr=new Hashtable();
56.          tree.on('checkchange', function(node, checked) {
57.             //当所点击节点被选中的时候   
58.         if(hasSearchResult==true){
59.             clearMapView();
60.         }           
61.         var nodeslength=0;  
62.         if(node.getUI().checkbox.checked){
63.             //添加该节点的显示
64.             nodeArr.add(node.id,node);
65.             nodeslength=node.childNodes.length;
66.             OrgInfoManage.getOrgDetails(node.id,function(value){
67.                   var Institute = new Object();
68.                   Institute["index"]=value.c_orgno;
69.                   Institute["lon"]=value.c_jing;
70.                   Institute["lat"]=value.c_wei;
71.                   Institute["institutename"]=value.c_orgname;
72.                   Institute["c_orgshortname"]=value.c_orgshortname;
73.                   Institute["c_preorgshortname"]=value.c_preorgshortname;
74.                   Institute["c_phone"]=value.c_phone;
75.                   Institute["c_mail"]=value.c_mail;
76.                   if(nodeslength==0){
77.                     AddMarkerToInstitute(Institute,true);
78.                   }else{
79.                     AddMarkerToInstitute(Institute,false);
80.                     var o =new OpenLayers.LonLat(112.987,28.1899);
81.                     map.setCenter(o,5);
82.                   }
83.                 });
84.              for(var i=0;i<nodeslength;i++){
85.                 //将节点中所有子节点设置为true；
86.                 node.childNodes[i].getUI().checkbox.checked=true;
87.                 nodeArr.add(node.childNodes[i].id,node) 
88.                 //添加所有子节点的显示
89.                 OrgInfoManage.getOrgDetails(node.childNodes[i].id,function(value){
90.                   var Institute = new Object();
91.                   Institute["index"]=value.c_orgno;
92.                   Institute["lon"]=value.c_jing;
93.                   Institute["lat"]=value.c_wei;
94.                   Institute["institutename"]=value.c_orgname;
95.                   Institute["c_orgshortname"]=value.c_orgshortname;
96.                   Institute["c_preorgshortname"]=value.c_preorgshortname;
97.                   Institute["c_phone"]=value.c_phone;
98.                   Institute["c_mail"]=value.c_mail;
99.                   if(nodeslength>1){
100.                     AddMarkerToInstitute(Institute,false);
101.                   }
102.                   if(nodeslength==1){
103.                     AddMarkerToInstitute(Institute,true);
104.                   }
105.                 });
106.              }
107.         }else{
108.             //当选中节点取消选中的时候
109.             nodeslength=node.childNodes.length;
110.             //这里记录子节点的数目。如果点选了分支节点，并且有多个分支节点的时候，将地图缩放到默认的状态
111.             nodeArr.remove(node.id);
112.             OrgInfoManage.getOrgDetails(node.id,function(value){
113.                   var instituteid;
114.                   instituteid=value.c_orgno;
115.                   try{
116.                   RemoveMarkerFromInstitute(instituteid);
117.                   }catch(e){}
118.                 });
119.              for(var i=0;i<nodeslength;i++){
120.                 //将节点中所有子节点设置为false；
121.                 node.childNodes[i].getUI().checkbox.checked=false;  
122.                 nodeArr.remove(node.childNodes[i].id)
123.                 //取消子节点的显示  
124.                 OrgInfoManage.getOrgDetails(node.childNodes[i].id,function(value){
125.                   var instituteid;
126.                   instituteid=value.c_orgno;
127.                   try{
128.                     RemoveMarkerFromInstitute(instituteid);
129.                   }catch(e){}
130.                 });
131.              }
132.         }
133.        }, tree);  
134.       tree.on("contextmenu",function(node,e){
135.             var ctxMenu = new Ext.menu.Menu({
136.                             items: [
137.                                 {
138.                                     id:'id_orgDetails',  
139.                                     handler:function(){orgDetails(node);},     
140.                                     text: "查看该机构详细信息"
141.                                 },
142.                                 {
143.                                     id:'id_orgIncome',  
144.                                     handler:function(){orgIncome(node);},     
145.                                     text: "查看该机构营收情况"
146.                                 }
147.                              ]
148.                  });
149.             ctxMenu.showAt(e.getXY());      
150.      });
151.     function orgDetails(node){
152.         openWindow("manage/marketing/orgInfoManage/details.html?id="+node.id+"",'机构详情',450,170); 
153.     }
154.     function orgIncome(node){
155.         openWindow("manage/marketing/orgBranchIncomeManage/main.html?id="+node.id+"",'机构收入',600,480); 
156.     }           
157. }
158. //清空所有复选框
159. function clearChildNodeChecked(node){
160.     if(node.childNodes.length!=0){
161.         for(var i=0;i<node.childNodes.length;i++){
162.                 node.childNodes[i].getUI().checkbox.checked=false;
163.                 clearChildNodeChecked(node.childNodes[i]);
164.             }
165.     }
166. }