Dragging and dropping items in a Flex Tree control

The following example shows you how you can reorder nodes in a Flex Tree control by setting the dragEnabled, dropEnabled, and dragMoveEnabled properties.

Full code after the jump.

View MXML

<?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>

View source is enabled in the following example.