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	<title>中文Flex例子 &#187; expandItem</title>
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	<description>中文Adobe Flex例子,Flex实例教程,RIA资源,全文检索技术,算法和数据结构</description>
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		<title>Flex中如何利用expandItem()和expandChildrenOf()展开或关闭Tree的各层节点的例子</title>
		<link>http://blog.minidx.com/2008/12/27/1835.html</link>
		<comments>http://blog.minidx.com/2008/12/27/1835.html#comments</comments>
		<pubDate>Sat, 27 Dec 2008 09:31:51 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Tree]]></category>
		<category><![CDATA[expandChildrenOf()]]></category>
		<category><![CDATA[expandItem]]></category>
		<category><![CDATA[isbranch]]></category>
		<category><![CDATA[Tree.]]></category>

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		<description><![CDATA[接下来的例子演示了Flex中如何利用expandItem()和expandChildrenOf()展开，或关闭Tree的各层节点。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; private function tree_expandItem(evt:MouseEvent):void {
&#160; &#160; &#160; &#160; &#160; &#160; if (tree.selectedItem &#38;amp;&#38;amp; tree.dataDescriptor.isBranch(tree.selectedItem)) {
&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; tree.expandItem(tree.selectedItem, checkBox.selected);
&#160; &#160; &#160; &#160; &#160; &#160; }
&#160; &#160; &#160; &#160; }
&#160;
&#160; [...]]]></description>
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		<item>
		<title>Flex中如何通过ComboBox对Tree中介点进行选择展开处理的例子</title>
		<link>http://blog.minidx.com/2008/12/25/1820.html</link>
		<comments>http://blog.minidx.com/2008/12/25/1820.html#comments</comments>
		<pubDate>Thu, 25 Dec 2008 13:33:21 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Tree]]></category>
		<category><![CDATA[expandItem]]></category>
		<category><![CDATA[getItemIndex]]></category>
		<category><![CDATA[isItemOpen]]></category>
		<category><![CDATA[scrollToIndex()]]></category>
		<category><![CDATA[Tree.]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/?p=1820</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何通过ComboBox，对Tree中介点进行选择展开处理。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.ListEvent;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function comboBox_change(evt:ListEvent):void {
&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; var team:String = ComboBox(evt.currentTarget).selectedItem.@label;
&#160; &#160; &#160; &#160; &#160; &#160; [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Flex中如何利用itemDoubleClick事件在双击Tree节点时展开该节点项目的例子</title>
		<link>http://blog.minidx.com/2008/12/25/1818.html</link>
		<comments>http://blog.minidx.com/2008/12/25/1818.html#comments</comments>
		<pubDate>Thu, 25 Dec 2008 13:26:30 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Tree]]></category>
		<category><![CDATA[doubleClickEnabled]]></category>
		<category><![CDATA[expandItem]]></category>
		<category><![CDATA[isItemOpen]]></category>
		<category><![CDATA[itemDoubleClick]]></category>
		<category><![CDATA[selectedItem]]></category>
		<category><![CDATA[Tree.]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/?p=1818</guid>
		<description><![CDATA[接下来的例子演示了Flex中如何利用itemDoubleClick事件，在双击Tree节点时展开该节点项目。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;horizontal&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;
&#160; &#160; &#160; &#160; creationComplete=&#34;init();&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import mx.events.ListEvent;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private function tree_itemDoubleClick(evt:ListEvent):void {
&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; var node:XML = tree.selectedItem as [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Flex的树形控件(Tree Control)中如何通过点击行进行展开/缩进的例子</title>
		<link>http://blog.minidx.com/2008/04/06/694.html</link>
		<comments>http://blog.minidx.com/2008/04/06/694.html#comments</comments>
		<pubDate>Sun, 06 Apr 2008 00:58:29 +0000</pubDate>
		<dc:creator>Minidxer</dc:creator>
				<category><![CDATA[Flex]]></category>
		<category><![CDATA[dataDescriptor]]></category>
		<category><![CDATA[expandItem]]></category>
		<category><![CDATA[getChildren]]></category>
		<category><![CDATA[isbranch]]></category>
		<category><![CDATA[isItemOpen]]></category>
		<category><![CDATA[Tree.]]></category>
		<category><![CDATA[树形控件]]></category>

		<guid isPermaLink="false">http://blog.minidx.com/2008/04/06/694.html</guid>
		<description><![CDATA[接下来的例子演示了如何通过点击行来替代点击箭头图标展开/缩进树形控件(Tree Control)中的项目。
让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：









下面是完整代码(或点击这里察看)：
Download: main.mxml&#60;?xml version=&#34;1.0&#34; encoding=&#34;utf-8&#34;?&#62;
&#60;mx:Application&#160;xmlns:mx=&#34;http://www.adobe.com/2006/mxml&#34;
&#160; &#160; &#160; &#160; layout=&#34;vertical&#34;
&#160; &#160; &#160; &#160; verticalAlign=&#34;middle&#34;
&#160; &#160; &#160; &#160; backgroundColor=&#34;white&#34;&#62;
&#160;
&#160; &#160; &#60;mx:Script&#62;
&#160; &#160; &#160; &#160; &#60;![CDATA[
&#160; &#160; &#160; &#160; &#160; &#160; import&#160;mx.collections.ICollectionView;
&#160; &#160; &#160; &#160; &#160; &#160; import&#160;mx.events.ListEvent;
&#160;
&#160; &#160; &#160; &#160; &#160; &#160; private&#160;function tree_itemClick(evt:ListEvent):void {
&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; var&#160;item:Object = Tree(evt.currentTarget).selectedItem;
&#160; &#160; [...]]]></description>
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