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2009-04-14

Drag Drop Treeview nodes in Flex

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/29/dragging-and-dropping-items-in-a-flex-tree-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">

<mx:XML id="xmlDP">
<root>
<para label="Paragraph 1" isBranch="true">
<node label="Lorem ipsum dolor sit amet, consectetuer adipiscing elit." />
<node label="Cras porttitor nunc a pede." />
<node label="Nulla ac magna non risus accumsan egestas." />
<node label="Aenean pretium porta felis." />
<node label="Sed massa." />
</para>
<para label="Paragraph 2" isBranch="true">
<node label="Pellentesque pretium eros id odio tincidunt lobortis." />
<node label="Praesent vitae dolor eget nisl adipiscing pretium." />
<node label="Fusce nonummy dignissim risus." />
<node label="Nunc sodales, lectus vitae nonummy cursus, augue lectus auctor orci, vel aliquet enim neque vel eros." />
<node label="Donec laoreet euismod libero." />
<node label="Etiam ut lectus." />
</para>
<para label="Paragraph 3" isBranch="true">
<node label="Maecenas ut nibh eu diam viverra suscipit." />
<node label="Pellentesque auctor, turpis vel lobortis suscipit, neque tortor tristique nibh, venenatis suscipit nisl nisl eget magna." />
<node label="Donec interdum." />
<node label="Praesent diam." />
</para>
<para label="Paragraph 4" isBranch="true">
<node label="Proin nulla." />
<node label="Morbi tincidunt, sapien in sollicitudin venenatis, nibh tortor pretium ante, non pharetra urna dolor et libero." />
<node label="In malesuada risus at neque." />
</para>
<para label="Paragraph 5" isBranch="true" />
</root>
</mx:XML>

<mx:Tree id="tree"
dataProvider="{xmlDP}"
labelField="@label"
showRoot="false"
verticalScrollPolicy="on"
alternatingItemColors="[#FFFFFF,#EEEEEE]"
showScrollTips="true"
dragEnabled="true"
dropEnabled="true"
dragMoveEnabled="true"
width="300"
rowCount="6" />

</mx:Application>
Output:

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