<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/12/01/determining-the-first-visible-item-in-a-flex-tree-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
		layout="vertical"
		verticalAlign="middle"
		backgroundColor="white" viewSourceURL="srcview/index.html">

	<mx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			import mx.events.ListEvent;

			private function tree_creationComplete(evt:FlexEvent):void {
				tree.expandChildrenOf(xmlDP, true);
			}

			private function comboBox_change(evt:ListEvent):void {
				tree.firstVisibleItem = comboBox.selectedItem;
			}
		]]>
	</mx:Script>

	<mx:XML id="xmlDP">
		<node>
			<node label="1.a" />
			<node label="1.b" />
			<node label="1.c">
				<node label="1.c.i" />
				<node label="1.c.ii" />
				<node label="1.c.iii" />
				<node label="1.c.iv" />
				<node label="1.c.v" />
			</node>
			<node label="1.d" />
			<node label="1.e">
				<node label="1.e.i" />
				<node label="1.e.ii" />
				<node label="1.e.iii">
					<node label="1.e.iii.A" />
				</node>
				<node label="1.e.iv" />
			</node>
			<node label="1.f" />
		</node>
	</mx:XML>

	<mx:ApplicationControlBar dock="true">
		<mx:Form styleName="plain">
			<mx:FormItem label="firstVisibleItem:">
				<mx:ComboBox id="comboBox"
						dataProvider="{xmlDP..node}"
						labelField="@label"
						change="comboBox_change(event);" />
			</mx:FormItem>
		</mx:Form>
	</mx:ApplicationControlBar>

	<mx:Tree id="tree"
			dataProvider="{xmlDP}"
			labelField="@label"
			showRoot="false"
			alternatingItemColors="[#EEEEEE, #FFFFFF]"
			width="50%"
			rowCount="6"
			creationComplete="tree_creationComplete(event);" />

</mx:Application>

