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POFlex Tree scrolling goes buggy after adding custom TreeItemRenderer
 

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  1. POFlex Tree scrolling goes buggy after adding custom TreeItemRenderer
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    <p>I have the follow code - as TreeItemRenderer</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;mx:TreeItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:solar="*"&gt; &lt;fx:Script&gt; &lt;![CDATA[ import mx.containers.Canvas; import mx.containers.VBox; import mx.controls.Alert; import mx.controls.Button; import mx.controls.CheckBox; import mx.controls.Tree; import mx.controls.listClasses.BaseListData; import mx.controls.treeClasses.TreeListData; import mx.core.mx_internal; use namespace mx_internal; protected var buttonBox : VBox; override protected function createChildren() : void { super.createChildren(); setStyle( "verticalAlign", "top" ); this.addEventListener( MouseEvent.CLICK, mouseHandler ); } protected function mouseHandler( event : MouseEvent ) : void { if( data.@buttonsVisible == "true" ) data.@buttonsVisible = "false" else data.@buttonsVisible = "true"; showButtons(); } private function showButtons() : void { if( true ) { if( buttonBox == null ) { buttonBox = new VBox(); buttonBox.setStyle( "verticalGap", 0 ); addChild( buttonBox ); var b1 : Button = new Button(); b1.percentWidth = 100; b1.label = "block"; buttonBox.addChild( b1 ); var b2 : Button = new Button(); b2.percentWidth = 100; b2.label = "block1"; buttonBox.addChild( b2 ); var b3 : Button = new Button(); b3.percentWidth = 100; b3.label = "block"; buttonBox.addChild( b3 ); } } else if( buttonBox != null ) { removeChild( buttonBox ); buttonBox = null; } invalidateSize(); invalidateDisplayList(); } override public function set listData( value : BaseListData ) : void { super.listData = value; if( listData ) { showButtons(); } } override protected function measure() : void { super.measure(); if( buttonBox != null ) { //buttonBox.visible = buttonBox.includeInLayout =( !isOpening &amp;&amp; isOpen ) ; var b : Boolean = false; if( data.@buttonsVisible != null ) b = data.@buttonsVisible == "true"; buttonBox.visible = buttonBox.includeInLayout = b; if( buttonBox.visible ) { buttonBox.y = measuredHeight; measuredHeight += buttonBox.measuredHeight; } } } override protected function updateDisplayList( unscaledWidth : Number, unscaledHeight : Number ) : void { super.updateDisplayList( unscaledWidth, unscaledHeight ); if( buttonBox != null ) { buttonBox.x = 40; buttonBox.setActualSize( unscaledWidth - buttonBox.x, unscaledHeight ); } } ]]&gt; &lt;/fx:Script&gt; &lt;/mx:TreeItemRenderer&gt; </code></pre> <p>The application code is as follow :</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;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" minWidth="955" minHeight="600"&gt; &lt;fx:Declarations&gt; &lt;!-- Place non-visual elements (e.g., services, value objects) here --&gt; &lt;/fx:Declarations&gt; &lt;mx:Tree x="289" y="0" width="377" height="599" labelField="@label" itemRenderer="iRR" variableRowHeight="true"&gt; &lt;mx:dataProvider&gt; &lt;fx:XMLList xmlns=""&gt; &lt;folder state="unchecked" label="Marketing Collateral" isBranch="true" &gt; &lt;folder state="unchecked" isBranch="true" label="Media, PR, and Communications" &gt; &lt;folder state="unchecked" isBranch="false" label="Article Reprint Disclaimers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Articles Reprints" /&gt; &lt;folder state="unchecked" isBranch="false" label="Interviews and Transcripts" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Kits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Releases" /&gt; &lt;folder state="unchecked" isBranch="false" label="Quick Hits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Rep Talking Points" /&gt; &lt;folder state="unchecked" isBranch="false" label="Special Updates" /&gt; &lt;folder state="unchecked" isBranch="false" label="White Papers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Article Reprint Disclaimers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Articles Reprints" /&gt; &lt;folder state="unchecked" isBranch="false" label="Interviews and Transcripts" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Kits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Releases" /&gt; &lt;folder state="unchecked" isBranch="false" label="Quick Hits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Rep Talking Points" /&gt; &lt;folder state="unchecked" isBranch="false" label="Special Updates" /&gt; &lt;folder state="unchecked" isBranch="false" label="White Papers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Article Reprint Disclaimers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Articles Reprints" /&gt; &lt;folder state="unchecked" isBranch="false" label="Interviews and Transcripts" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Kits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Releases" /&gt; &lt;folder state="unchecked" isBranch="false" label="Quick Hits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Rep Talking Points" /&gt; &lt;folder state="unchecked" isBranch="false" label="Special Updates" /&gt; &lt;folder state="unchecked" isBranch="false" label="White Papers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Article Reprint Disclaimers" /&gt; &lt;folder state="unchecked" isBranch="false" label="Articles Reprints" /&gt; &lt;folder state="unchecked" isBranch="false" label="Interviews and Transcripts" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Kits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Press Releases" /&gt; &lt;folder state="unchecked" isBranch="false" label="Quick Hits" /&gt; &lt;folder state="unchecked" isBranch="false" label="Rep Talking Points" /&gt; &lt;folder state="unchecked" isBranch="false" label="Special Updates" /&gt; &lt;folder state="unchecked" isBranch="false" label="White Papers" /&gt; &lt;/folder&gt; &lt;folder state="unchecked" isBranch="true" label="Forms and Applications" &gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;/folder&gt; &lt;folder state="unchecked" isBranch="true" label="Forms and Applications" &gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;/folder&gt; &lt;folder state="unchecked" isBranch="true" label="Forms and Applications" &gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;folder state="unchecked" isBranch="false" label="Applications" /&gt; &lt;folder state="unchecked" isBranch="false" label="Forms" /&gt; &lt;/folder&gt; &lt;/folder&gt; &lt;/fx:XMLList&gt; &lt;/mx:dataProvider&gt; &lt;/mx:Tree&gt; &lt;/s:Application&gt; </code></pre> <ul> <li>The code basically works for a bit but after a few items been opened - it fail, and scrolling becaming buggy. Please help.</li> </ul>
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    1. USYordan Yanakiev
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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