The following example shows how you can change the selection duration and selection easing function on a Tree control in Flex by setting the selectionDuration and selectionEasingFunction styles.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/26/changing-the-selection-duration-and-easing-function-on-a-flex-tree-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            import mx.effects.easing.*;
        ]]>
    </mx:Script>

    <mx:XMLListCollection id="xmlListColl">
        <mx:source>
            <mx:XMLList>
                <node label="One">
                    <node label="One.1" />
                    <node label="One.2" />
                    <node label="One.3" />
                </node>
                <node label="Two">
                    <node label="Two.1" />
                    <node label="Two.2" />
                    <node label="Two.3" />
                </node>
            </mx:XMLList>
        </mx:source>
    </mx:XMLListCollection>

    <mx:Tree id="tree"
            dataProvider="{xmlListColl}"
            labelField="@label"
            selectionColor="haloBlue"
            textSelectedColor="white"
            selectionDuration="3000"
            selectionEasingFunction="Bounce.easeInOut"
            fontSize="24"
            fontWeight="bold"
            rowHeight="40"
            rowCount="4"
            width="300" />

</mx:Application>

View source is enabled in the following example.

 
About The Author

Peter deHaan

Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.

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