DefaultTileListEffect  - AS3 Flex

<?xml version="1.0"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Script>
        <![CDATA[
            import mx.effects.DefaultTileListEffect;
            import mx.effects.easing.Elastic;
            import mx.collections.ArrayCollection;
            import mx.effects.Move;

            [Bindable]
            private var myDP:ArrayCollection = new ArrayCollection(
                ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P']);

            private function deleteItems():void {
                // As each item is removed, the index of the other items changes.
                // So first get the items to delete, then determine their indices
                // as you remove them.
                var toRemove:Array = [];
                for (var i:int = 0; i < tlist0.selectedItems.length; i++)
                    toRemove.push(tlist0.selectedItems[i]);
                for (i = 0; i < toRemove.length; i++)
                    myDP.removeItemAt(myDP.getItemIndex(toRemove[i]));
            }

            private var zcount:int = 0;
            private function addItems():void {
                myDP.addItemAt("Z"+zcount++,Math.min(2,myDP.length));
            }
        ]]>
    </fx:Script>

    <!-- Define an instance of the DefaultTileListEffect effect,
         and set its moveDuration and color properties. -->

    <fx:Declarations>
        <mx:DefaultTileListEffect id="myDTLE"
            moveDuration="100"
            color="0x0000ff"/>
    </fx:Declarations>

    <s:Panel title="Halo DefaultTileListEffect Example" width="75%" height="75%">
        <s:VGroup left="20" right="20" top="20" bottom="20">

            <mx:TileList id="tlist0"
                height="100%" width="100%"
                columnCount="4" rowCount="4"
                fontSize="18" fontWeight="bold"
                direction="horizontal"
                dataProvider="{myDP}"
                allowMultipleSelection="true"
                offscreenExtraRowsOrColumns="2"
                itemsChangeEffect="{myDTLE}" />

            <s:Button
                label="Delete selected item(s)"
                click="deleteItems();"/>
            <s:Button
                label="Add item"
                click="addItems();"/>
         </s:VGroup>
    </s:Panel>
</s:Application>