日期:2014-05-16  浏览次数:20355 次

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