mustella/tests/mx/collections/AsyncListView/SWFs/assets/PagedDataComp9.mxml

<?xml version="1.0" encoding="utf-8"?>
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  this work for additional information regarding copyright ownership.
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  distributed under the License is distributed on an "AS IS" BASIS,
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  limitations under the License.

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<s:Group
	xmlns:fx="http://ns.adobe.com/mxml/2009"
	xmlns:mx="library://ns.adobe.com/flex/mx"
	xmlns:s="library://ns.adobe.com/flex/spark"
	xmlns:local="assets.*">

	<!-- 
		This one has useVirtualLayout = false.
	-->

	<fx:Script>
		<![CDATA[

		import flash.events.Event;
		import mx.collections.*;
		import mx.collections.errors.*;
		import mx.events.CollectionEvent;
		import spark.components.*;
		import spark.components.supportClasses.DropDownController;
		
		import flash.events.TimerEvent;
		import flash.utils.Timer;

		private var t:Timer;

		// These are new in this component so we can sort.
		public var lcv:ListCollectionView;
		public var theSort:Sort;
		
		// Public so we can access it, e.g., to be sure it dispatches events.
		public var alv:AsyncListView; 

		// The ever famous simulator.
		public var theSimulator:ItemPendingErrorSimulator;
		
		// Added items start at 5000 so we can tell which ones those are.
		public var addedItems:int = 5000;

		// To use as a local data provider.
		public var ac:ArrayCollection = new ArrayCollection([{info:'thing 0'},{info:'thing 1'},{info:'thing 2'},{info:'thing 3'},{info:'thing 4'}]);

		/**
		*	This allows you to set a bunch of parameters.
		**/
		public function setup( responseDelay:int = 500,
								numItems:int = 100,
								numPreloadedPages:int = 0,
								pageSize:int = 1,
								mode:String = 'manual',
								failureProbability:int = 0,
								createPendingItemFunction:Boolean = true,
								createFailedItemFunction:Boolean = true):void{

			theSimulator = new ItemPendingErrorSimulator(); 

			theSimulator.responseDelay = responseDelay;
			theSimulator.numItems = numItems;
			theSimulator.numPreloadedPages = numPreloadedPages;
			theSimulator.pageSize = pageSize;
			theSimulator.mode = mode;
			theSimulator.failureProbability = failureProbability;
			theSimulator.objectFactory = theObjectFactory;
			theSimulator.reset();

			alv = new AsyncListView(theSimulator);
			
			if(createPendingItemFunction)
				alv.createPendingItemFunction = pendingFunction;
	
			if(createFailedItemFunction)
				alv.createFailedItemFunction = errorFunction;		

			lcv = new ListCollectionView(alv);

			theList.dataProvider = lcv;
		}

		/**
		*	This allows you to set a bunch of parameters and
		*	specify the pending and error functions.
		**/
		public function setup2( responseDelay:int = 500,
								numItems:int = 100,
								numPreloadedPages:int = 0,
								pageSize:int = 1,
								mode:String = 'manual',
								failureProbability:int = 0,
								createPendingItemFunction:Function = null,
								createFailedItemFunction:Function = null):void{

			theSimulator = new ItemPendingErrorSimulator(); 

			theSimulator.responseDelay = responseDelay;
			theSimulator.numItems = numItems;
			theSimulator.numPreloadedPages = numPreloadedPages;
			theSimulator.pageSize = pageSize;
			theSimulator.mode = mode;
			theSimulator.failureProbability = failureProbability;
			theSimulator.objectFactory = theObjectFactory;
			theSimulator.reset();

			alv = new AsyncListView(theSimulator);
			
			if(createPendingItemFunction != null)
				alv.createPendingItemFunction = createPendingItemFunction;
	
			if(createFailedItemFunction != null)
				alv.createFailedItemFunction = createFailedItemFunction;		

			theList.dataProvider = alv;
		}

		/**
		*	This setup updates the original AsyncListView object
		*	instead of replacing it.
		**/
		public function setup3( responseDelay:int = 500,
								numItems:int = 100,
								numPreloadedPages:int = 0,
								pageSize:int = 1,
								mode:String = 'manual',
								failureProbability:int = 0,
								createPendingItemFunction:Boolean = true,
								createFailedItemFunction:Boolean = true):void{

			theSimulator = new ItemPendingErrorSimulator(); 

			theSimulator.responseDelay = responseDelay;
			theSimulator.numItems = numItems;
			theSimulator.numPreloadedPages = numPreloadedPages;
			theSimulator.pageSize = pageSize;
			theSimulator.mode = mode;
			theSimulator.failureProbability = failureProbability;
			theSimulator.objectFactory = theObjectFactory;
			theSimulator.reset();

			alv.list = theSimulator;
			
			if(createPendingItemFunction)
				alv.createPendingItemFunction = pendingFunction;
	
			if(createFailedItemFunction)
				alv.createFailedItemFunction = errorFunction;		

			theList.dataProvider = alv;
		}

		public function pendingFunction(i:int, obj:Object):Object{
			return {info: "item " + i.toString() + " pending", status: "pending"};
		}

		public function errorFunction(i:int, obj:Object):Object{
			return {info: "item " + i.toString() + " failed", status: "failed"};
		}

		public function theObjectFactory(i:int):Object{
			return {info: "item " + i.toString() + " present", status: "present"};
		}

		public function sort(reverse:Boolean = false):void{
			theSort = new Sort();
			theSort.fields = [new SortField("info", true)];

			if(reverse)
				theSort.reverse();

			lcv.sort = theSort;			
			lcv.refresh();
		}

		public function doTest():void{
			setup();
			theList.openDropDown();

			t = new Timer(2000);
			t.addEventListener(TimerEvent.TIMER, handleTimerEvent);
			t.start();
		}
		
		public function handleTimerEvent(obj:*):void{
			trace("theList.dataGroup.getElementAt(0).label: " + Object(theList.dataGroup.getElementAt(0)).label);

		}

		]]>
	</fx:Script>
	<s:VGroup>
		<s:ComboBox id="theList" useVirtualLayout="true" labelField="info" />
	</s:VGroup>
</s:Group>