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POSpark List SelectedIndex doesn't update
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  1. POSpark List SelectedIndex doesn't update
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    copied!<p>So my problem is the selectedIndex isn't updated when i use nextSlide() and prevSlide(), which are executed when i click on two buttons. SelectedIndex works when i click on the elements in the List. What am i doing wrong? do i have to dispatch some events? Are there any tricks to doing it with buttons?</p> <p>This is my playlist class</p> <pre><code>public class Playlist extends List { private var dispatcher:Dispatcher; public function Playlist() { super(); this.dragEnabled = true; this.dragMoveEnabled = true; this.dropEnabled = true; this.allowMultipleSelection = true; this.dispatcher = new Dispatcher(); } public function handleSelection(event:PlaylistEvent):void { if (event.type == PlaylistEvent.ITEMS_SELECTED){ selectItem(event.index, event.count); selectedIndex = event.index; } } private function selectItem(index:Number, count:Number):void { var tempArray:Array = this.dataProvider.toArray(); var indiceVector:Vector.&lt;int&gt; = new Vector.&lt;int&gt;(); var itemVector:Vector.&lt;Object&gt; = new Vector.&lt;Object&gt;(); var n:int = 1; for (var i:int=0;i&lt;tempArray.length;i++){ var item:PlaylistItem = tempArray[i]; if (i&lt;index) deselectItem(item); else if (i&lt;index+count) { item.Selected=true; indiceVector[count-n] = i; itemVector[count-n++] = item; } else deselectItem(item); } selectedItems = itemVector; selectedIndices = indiceVector; } private function deselectItem(item:PlaylistItem):void { item.Selected = false; } public function nextSlide():void { if (dataProvider.length == 0) return; var index:int = selectedIndex; if (index &lt; 0) { var event1:PlaylistEvent = new PlaylistEvent(PlaylistEvent.ITEMS_SELECTED, 0, 1); dispatcher.dispatchEvent(event1); return; } var item:PlaylistItem = PlaylistItem(dataProvider.getItemAt(index)); if (index &lt; dataProvider.length-1) { trace("going to index", index+1); var event:PlaylistEvent = new PlaylistEvent(PlaylistEvent.ITEMS_SELECTED, index+1, 1); dispatcher.dispatchEvent(event); return; } } public function previousSlide():void { if (dataProvider.length == 0) return; var index:int = selectedIndex; if (index &lt; 0) { var event1:PlaylistEvent = new PlaylistEvent(PlaylistEvent.ITEMS_SELECTED, 0, 1); dispatcher.dispatchEvent(event1); return; } var item:PlaylistItem = PlaylistItem(dataProvider.getItemAt(index)); if (index &gt; 0) { var event:PlaylistEvent = new PlaylistEvent(PlaylistEvent.ITEMS_SELECTED, index-1, 1); dispatcher.dispatchEvent(event); return; } } } } </code></pre> <p>This is my mate EventMap</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;mate:EventMap xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:mate="http://mate.asfusion.com/" xmlns:air="de.websector.mate.extensions.air.*"&gt; &lt;fx:Script&gt; &lt;![CDATA[ import components.Playlist; import events.PlaylistEvent; import mx.controls.Alert; import mx.events.*; import mx.logging.*; import mx.logging.Log; import spark.components.Application; private var logger:ILogger; private function initLogger():void{ logger = Log.getLogger("MainEventMap"); trace("started init maineventmap"); } ]]&gt; &lt;/fx:Script&gt; &lt;fx:Declarations&gt; &lt;mate:EventHandlers type="{FlexEvent.APPLICATION_COMPLETE}"&gt; &lt;mate:InlineInvoker method="initLogger"/&gt; &lt;mate:ObjectBuilder generator="{MainManager}"/&gt; &lt;mate:EventAnnouncer type="{InitEvent.SYSTEM_INIT_COMPLETE}" /&gt; &lt;/mate:EventHandlers&gt; &lt;mate:Injectors target="{Playlist}"&gt; &lt;mate:PropertyInjector targetKey="dataProvider" source="{MainManager}" sourceKey="playlistItems" /&gt; &lt;/mate:Injectors&gt; &lt;mate:Injectors target="{MainManager}"&gt; &lt;mate:PropertyInjector targetKey="playlist" source="{Playlist}" /&gt; &lt;/mate:Injectors&gt; &lt;!-- Playlist events! __________________________________________________________________________________________________--&gt; &lt;mate:EventHandlers type="{PlaylistEvent.ITEMS_SELECTED}"&gt; &lt;mate:MethodInvoker generator="{Playlist}" method="handleSelection" arguments="{event}" /&gt; &lt;/mate:EventHandlers&gt; &lt;/fx:Declarations&gt; &lt;/mate:EventMap&gt; </code></pre>
 

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