extjs学习四treePanel
树的使用是很频繁的，对树节点的各种操作。和数据库的互动操作。
tree.html:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<title>树的展示</title>
<!-- Ext -->
<link rel="stylesheet" type="text/css" href="ext4/resources/css/ext-all.css" />
<script type="text/javascript" src="ext4/bootstrap.js">
</script>
<script type="text/javascript" src="ext4/locale/ext-lang-zh_CN.js">
</script>
<!-- tree.jsp page -->
<link rel="stylesheet" type="text/css" href="ext4/ux/css/TabScrollerMenu.css" />
<script type="text/javascript" src="forever.js">
</script>
<script type="text/javascript" src="tree-simple.js">
</script>
<script type="text/javascript" src="tree-check.js">
</script>
<script type="text/javascript" src="tree-app.js">
</script>
</head>
<body>
</body>
</html>
forever.js是工具类：
Ext.ns("org.forever.util");
Ext.define('org.forever.util.TreeUtil', {
extend: 'Object',
userName: '默认值',//属性
constructor: function(config){//构造函数
Ext.apply(this, config);
}
});
//递归更新节点的选中状态
org.forever.util.TreeUtil.updateCheckStatus = function(parentNode, checked){
Ext.each(parentNode.childNodes, function(childNode, index, allItems){
//Ext.Msg.alert('节点信息',node.get('text')+';index=' + index);
childNode.set('checked', checked);
org.forever.util.TreeUtil.updateCheckStatus(childNode, checked);
});
}
tree-app.js是程序的初始化代码：
Ext.Loader.setConfig({
enabled: true
});
Ext.Loader.setPath('Ext.ux', 'ext4/ux/');
Ext.onReady(function(){
var tabscrollermenu = Ext.create('Ext.ux.TabScrollerMenu', {
ptype: 'tabscrollermenu',
maxText: 15,
pageSize: 10
});
var simpleTreePanel = createSimpleTree();
var checkTreePanel = createCheckTree();
var tabPanel = Ext.create('Ext.tab.Panel', {
region: 'center',
activeTab: 1,
plugins: [tabscrollermenu],
items: [simpleTreePanel, checkTreePanel]
});
Ext.create('Ext.Window', {
title: 'tree app',
width: 500,
height: 400,
x: 100,
y: 100,
bodyStyle: 'padding: 5px;',
layout: 'border',
items: [tabPanel]
}).show();
});
tree-simple.js是创建一个简单的树，对节点提取值进行操作。
function createSimpleTree(){
var treeStore;
var treePanel;
var toolbarPanel;
store = Ext.create('Ext.data.TreeStore', {
root: {
expanded: true,
text: "根节点",
children: [{
text: "1-1",
leaf: true
}, {
text: "1-2",
expanded: true,
children: [{
text: "2-1",
leaf: true
}, {
text: "2-2",
leaf: true
}]
}, {
text: "1-3",
leaf: true
}]
}
});
//工具条面板
toolbarPanel = new Ext.panel.Panel({
dockedItems: [{
xtype: 'toolbar',
items: [{
text: '选中节点值',
handler: function(){
var selectionMode = treePanel.getSelectionModel();
var modeType = selectionMode.getSelectionMode();//SINGLE, MULTI or SIMPLE
var selection = selectionMode.getSelection();//获取选中的值
if (selection.length == 1) {
Ext.MessageBox.show({
title: '节点操作',
msg: "选中节点的值：" + selection[0].data.text,
icon: Ext.MessageBox.INFO
});
}
else {
Ext.MessageBox.show({
title: '节点操作',
msg: '没有选中的节点',
icon: Ext.MessageBox.INFO
});
}
}
}]
}]
});
//树面板
treePanel = Ext.create('Ext.tree.Panel', {
title: 'simple-tree',
store: store,
closable: true,
rootVisible: true,//显示根节点
dockedItems: [toolbarPanel],
listeners: {
itemclick: function(view, record, item, index, e){//用了select这个事件不会触发。
Ext.MessageBox.show({
title: '节点操作',
msg: 'itemclick：index=' + index + ",text=" + record.data.text,
icon: Ext.MessageBox.INFO
});
}
}
//renderTo: 'simple-tree-div'//<div id="simple-tree-div"></div>
});
//注册事件操作
treePanel.getSelectionModel().on('select', function(selModel, record){
Ext.MessageBox.show({
title: '节点操作',
msg: 'select：modeType=' + selModel.mode + ",text=" + record.data.text,
icon: Ext.MessageBox.INFO
});
});
return treePanel;
}
tree-check.js是带复选框的树，提取选中的树的值：
function createCheckTree(){
var treeStore;
var treePanel;
var toolbarPanel;
store = Ext.create('Ext.data.TreeStore', {
root: {
checked: false,
expanded: true,
text: "根节点",
children: [{
checked: false,
text: "1-1",
leaf: true
}, {
checked: false,
text: "1-2",
expanded: true,
children: [{
checked: false,
text: "2-1",
leaf: true
}, {
checked: false,
text: "2-2",
children: [{
checked: false,
text: "2-2-1",
leaf: true
}, {
checked: false,
text: "2-2-2",
leaf: true
}]
}]
}, {
checked: false,
text: "1-3",
leaf: true
}]
}
});
toolbarPanel = new Ext.panel.Panel({
dockedItems: [{
xtype: 'toolbar',
items: [{
text: '选中节点值',
handler: function(target, e){
var records = treePanel.getView().getChecked(), names = [];
Ext.Array.each(records, function(rec){
names.push(rec.get('text'));
});
if (records.length > 0) {
Ext.MessageBox.show({
title: 'Selected Nodes',
msg: names.join('<br />'),
icon: Ext.MessageBox.INFO
});
}
else {
Ext.MessageBox.show({
title: '节点操作',
msg: '没有选中的节点',
icon: Ext.MessageBox.INFO
});
}
}
}]
}]
});
treePanel = Ext.create('Ext.tree.Panel', {
title: 'check-tree',
store: store,
animate: true,
closable: true,
rootVisible: true,
dockedItems: [toolbarPanel],
listeners: {
itemclick: function(view, record, item, index, e){
},
checkchange: function(node, checked){
org.forever.util.TreeUtil.updateCheckStatus(node, checked);
}
}
});
return treePanel;
}
