extjs关于treePanel+chekBox全部选中以及清空选中问题探讨

//树
var treePanel = new Ext.tree.TreePanel({
id:'ptree',
region:'west',
layout:'anchor',
border:false,
rootVisible: false,
root:{},
listeners:{
render: function() {
authorityTree(treePanel); /*渲染树*/
},
checkchange: function(node, state) {
if (node.parentNode != null) {
//选中子节点让相应的父节点选中
var pNode = node.parentNode;
if (state || treePanel.getChecked(id, pNode) == "") {
pNode.ui.toggleCheck(state);// 触发父节点被选中
pNode.attributes.checked = state;
}
}
treeId = node.attributes.id;
treeName = node.attributes.text;
}
}
});
//操作按钮
tbar: [{
id: 'btnQingKong',
text: '清空',
iconCls: 'winupdate-icon',
handler: function() {
var nodes = Ext.getCmp('ptree').getChecked();
if (nodes && nodes.length) {
for (var i = 0; i < nodes.length; i++) {
//设置UI状态为未选中状态
nodes[i].getUI().toggleCheck(false);
//设置节点属性为未选中状态
nodes[i].attributes.checked = false;
}
}
}
},{
id: 'btnQuanXuan',
text: '全选',
iconCls: 'winupdate-icon',
handler: function() {
var nodeT = Ext.getCmp('ptree').getRootNode();
treeCheckTrue(nodeT);
}
}]
/**
*checkTree全选
*/
var treeCheckTrue = function(node)
{
node.eachChild(function (child) {
child.getUI().toggleCheck(true);
child.attributes.checked = true;
treeCheckTrue(child);
});
}
/**
*checkTree清空
*/
var treeCheckfalse = function(tree)
{
var nodes = tree.getChecked();
if(nodes && nodes.length){
for(var i=0;i<nodes.length;i++){
//设置UI状态为未选中状态
nodes[i].getUI().toggleCheck(false);
//设置节点属性为未选中状态
nodes[i].attributes.checked=false;
}
}
}