<?xml version="1.0"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

-->
<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.DefaultListEffect;
            import mx.collections.ArrayCollection;

            [Bindable]
            private var myDP:ArrayCollection = new ArrayCollection(
                ['A','B','C','D','E','F','G','H']);

            private function deleteItem():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 < list0.selectedItems.length; i++)
                    toRemove.push(list0.selectedItems[i]);
                for (i = 0; i < toRemove.length; i++)
                    myDP.removeItemAt(myDP.getItemIndex(toRemove[i]));
            }

            private var zcount:int = 0;
            private function addItem():void {
                // Always add the new item after the third item,
                // or after the last item if the length is less than 3.
                myDP.addItemAt("Z"+zcount++,Math.min(3,myDP.length));
            }
        ]]>
    </fx:Script>

    <!-- Define an instance of the DefaultListEffect effect,
         and set its fadeOutDuration and color properties. -->
    <fx:Declarations>
        <mx:DefaultListEffect id="myDLE"
            fadeOutDuration="1000"
            color="0x0000ff"/>
    </fx:Declarations>

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

            <mx:List id="list0"
                width="150"
                dataProvider="{myDP}"
                variableRowHeight="true"
                fontSize="18"
                allowMultipleSelection="true"
                itemsChangeEffect="{myDLE}"/>

            <s:Button
                label="Delete item"
                click="deleteItem();"/>
            <s:Button
                label="Add item"
                click="addItem();"/>
        </s:VGroup>

    </s:Panel>
</s:Application>