[flexcoders] possible nested repeater bug??

Jaime Bermudez Thu, 02 Nov 2006 19:12:53 -0800

Hi flexcoders,

I've come across a potential bug in an app I'm working on, but perhaps I'm doing something wrong. I have an array of VOs where each VO has an array of children VOs. I'm using a nested repeater to represent this structure. The user can add parents and children - this is when some strange behavior occurs. Some repeater rows in the nested repeater appear blank. I tried the whole dummy UI object filler to no avail. Here's a sample app that illustrates the problem. Just add a few parents and then add children and you'll see a lot of repeated rows. Any help would be appreciated:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
layout="absolute"
width="100%"
height="100%"
    creationComplete="init()"
>

<mx:Panel id="main"
  width="100%"
  height="100%"
     title="Testing representing complex structure in nested repeater"
     >

     <mx:Repeater id="rpParents"
     dataProvider="{this.dpParent}">
     <mx:HBox width="100%">
      <mx:Text id="txtParentName"
        width="100%"
        paddingLeft="100"
        text="{rpParents.currentItem.name}"
        />
    <mx:Button id="btnAddChild"
     label="Add a child to this parent node"
     click="this.handleAddChildClick(event);"
     />
     </mx:HBox>
   <mx:Repeater id="rpChildren"
    dataProvider="{ rpParents.currentItem.children}"
    >
      <mx:Text id="txtChildName"
        width="100%"
        paddingLeft="200"
        text="{ rpChildren.currentItem.name}"
        />
   </mx:Repeater>
     </mx:Repeater>

  <mx:ControlBar
   width="100%"
   horizontalAlign="right">
   <mx:Button id="btnClearParents"
       label="Clear all parents"
       click="this.dpParent = new ArrayCollection();"
    />
   <mx:Button id="btnAddParentNode"
       label="Add a new parent node"
       click="handleAddParentClick();"
    />
  </mx:ControlBar>
</mx:Panel>

<mx:Script>
  <![CDATA[
   import mx.collections.ArrayCollection;
   import mx.core.UIComponent;

   [Bindable]
   public var dpParent:ArrayCollection;

   public function init() : void
   {
    dpParent = new ArrayCollection();
   }

   public function handleAddParentClick():void
   {
    var newParent:Object = new Object();
    newParent.name = "Parent number " + (dpParent.length + 1);
    newParent.children = new ArrayCollection();

    this.dpParent.addItem(newParent);
   }

   public function handleAddChildClick(event:MouseEvent):void
   {
    var parent:Object = UIComponent(event.currentTarget).getRepeaterItem();
    var newChild:Object = new Object();
    newChild.name = "Child number " + (ArrayCollection(parent.children).length + 1);

    ArrayCollection(parent.children).addItem(newChild);
   }
  ]]>
</mx:Script>

</mx:Application>

Thanks,

Jaime

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[flexcoders] possible nested repeater bug??

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