Yii Framework 开发教程(19) UI 组件 TreeView示例

CTreeView用来显示具有层次结构的数据，使用TreeView 通过设置Data属性。Data为具有下面结构的数组：

• ext: string, 树节点的文本.
• expanded: boolean,可选，表示该节点是否展开.
• id: string, 可选，该节点ID.
• hasChildren: boolean, 可选，缺省为False,当为True表示该节点含有子节点.
• children: array,可选，子节点数组。.
• htmlOptions: array, HTML选项。

到目前为止我们还没有介绍读取数据库，因此本例使用Hard Code的数据如下：

array(
  'text' =>  '<a id="27" href="#">World:4</a>' ,
  'id' =>  '27' ,
  'hasChildren' =>  true,
  'children' =>
	array
	  (
		array(
		  'text' =>  '<a id="1" href="#">Europa:3</a>' ,
		  'id' =>  '1' ,
		  'hasChildren' =>  true,
		  'children' =>
			array
		(
			array(
				'text' =>  '<a id="3" href="#">Germany:3</a>' ,
				'id' =>  '3' ,
				'hasChildren' =>  true,
				'children' =>
				array
				(
					array(
						'text' =>  '<a id="15" href="#">Munich:0</a>' ,
						'id' =>  '15' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="16" href="#">Stuttgart:0</a>' ,
						'id' =>  '16' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="5" href="#">Berlin:0</a>' ,
						'id' =>  '5' ,
						'hasChildren' =>  false,
						)
					)),
			array(
				'text' =>  '<a id="2" href="#">Norway:3</a>' ,
				'id' =>  '2' ,
				'hasChildren' =>  true,
				'children' =>
				array
				(
					array(
						'text' =>  '<a id="10" href="#">Stavanger:0</a>' ,
						'id' =>  '10' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="12" href="#">Oslo:0</a>' ,
						'id' =>  '12' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="11" href="#">Bergen:0</a>' ,
						'id' =>  '11' ,
						'hasChildren' =>  false,
						))),
			array(
				'text' =>  '<a id="4" href="#">United Kingdom:2</a>' ,
				'id' =>  '4' ,
				'hasChildren' =>  true,
				'children' =>
				array(

					array(
						'text' =>  '<a id="13" href="#">London:0</a>' ,
						'id' =>  '13' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="14" href="#">Manchester:0</a>' ,
						'id' =>  '14' ,
						'hasChildren' =>  false,
						))),
			array(
				'text' =>  '<a id="7" href="#">Asia:3</a>' ,
				'id' =>  '7' ,
				'hasChildren' =>  true,
				'children' =>
				array
				(
					array(
						'text' =>  '<a id="18" href="#">Japan:0</a>' ,
						'id' =>  '18' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="20" href="#">China:0</a>' ,
						'id' =>  '20' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="19" href="#">Indonesia:0</a>' ,
						'id' =>  '19' ,
						'hasChildren' =>  false,
						)
					)),
			array(
				'text' =>  '<a id="9" href="#">America:4</a>' ,
				'id' =>  '9' ,
				'hasChildren' =>  true,
				'children' =>
				array
				(
					array(
						'text' =>  '<a id="23" href="#">Canada:0</a>' ,
						'id' =>  '23' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="24" href="#">United States:0</a>' ,
						'id' =>  '24' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="25" href="#">Mexico:0</a>' ,
						'id' =>  '25' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="26" href="#">Argentina:0</a>',
						'id' =>  '26' ,
						'hasChildren' =>  false,
						))),
			array(
				'text' =>  '<a id="8" href="#">Africa:2</a>' ,
				'id' =>  '8' ,
				'hasChildren' =>  true,
				'children' =>
				array(

					array(
						'text' =>  '<a id="22" href="#">Kenya:0</a>' ,
						'id' =>  '22' ,
						'hasChildren' =>  false,
						),
					array(
						'text' =>  '<a id="21" href="#">Tanzania:0</a>' ,
						'id' =>  '21' ,
						'hasChildren' =>  false
						)
					)
				)
			)))));

这里为每个节点的文本都添加了一个链接，同时也演示了使用JQuery响应节点的点击事件，这是通过客户端JavaScripts来实现的。
修改View定义

<?php
$cs=Yii::app()->clientScript;
$cs->registerScript('menuTreeClick', "
	jQuery('#menu-treeview a').click(function() {
		alert('Node #'+this.id+' was clicked!');
		return false;
	});
");

$this->widget('CTreeView',array(
	'id'=>'menu-treeview',
	'data'=>DataModel::getDummyData(),

	'control'=>'#treecontrol',
	'animated'=>'fast',
	'collapsed'=>true,
	'htmlOptions'=>array(
				'class'=>'filetree'
				)
			));
?>

clientScript的registerScript用来做客户端定义JavaScripts。

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