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;
}
}
}