You are not tackling this right.
The component does not create the title bar as a child.
The skin will do that.
Check this out:
(1) Do the component in ActionScript. Declare the expected elements that the
skin will define as variables. Define their behaviors and properties in the
partAdded function.
package com.mycompany {
[SkinState("normal")]
public class HostComponent extends SkinnableContainer
{
[SkinPart(required="false")]
public var titleBar:IReportTitleBar
override protected function partAdded(partName:String,instance:Object):void
{
if (instance == titleBar)
{
titleBar.label = "My Label";
// or use Binding:
BindingUtils.bindPropert(titleBar,"label",this,titleBarLabel);
}
}
}
// don't forget the partRemoved function, too
}
(2) Then, the skin only defines the titleBar using convenient MXML.
<s:SparkSkin >
<fx:Metadata>
[HostComponent("com.mycompany.HostComponent")]
</fx:Metadata>
<s:states>
<s:State name="normal"/>
</s:states>
<controls:DCDocTitleBar id="titleBar" />
</s:SparkSkin>
--- In flexcoders@yahoogroups.com, "amiller.demandlending" <amil...@...> wrote:
>
> Hi Everyone,
>
> I have a sub-component which uses a String binding on a Label. The bindings
> works fine if I do not use a skinClass on the host component. If I do use a
> SparkSkin, my bindings do not execute on the sub-component. Instead, I get
> the value which I initialized it to.
>
> Am I doing something wrong, or is this expected behavior?
>
> If this is expected behavior, then what is the purpose of a SparkSkin if I
> have to explicitly redeclare all my control code in the skin?
>
> I could just be misunderstanding the intended usage, but from what I
> understood in the docs it seems like a very powerful new feature.
>
> Would anyone be able to enlighten me on the topic a bit more?
>
>
> Here is the trimmed code for my host/sub
>
> Host Component
> ----
> <s:SkinnableContainer skinClass="demand.skins.DSDoc" >
> <fx:Metadata>
> [SkinState("normal")]
> </fx:Metadata>
> <fx:Script>
> <![CDATA[
> [SkinPart(required="false")]
> public var titleBar:IReportTitleBar
>
> override protected function createChildren():void
> {
> if (!_titleBar)
> {
> _titleBar = new DCDocTitleBar();
>
> this.addElementAt(IVisualElement(_titleBar), 0);
> }
> super.createChildren();
> }
> ]]>
> </fx:Script>
> </s:SkinnableContainer>
> ---
>
> The title bar sub-component
> ----
> <s:SkinnableContainer >
> <fx:Script>
> <![CDATA[
> [Bindable]
> public var label:String="Incorrect Label";
> ]]>
> </fx:Script>
> <s:Label text="{this.label}"/>
> </s:SkinnableContainer>
> ----
>
> The host component skin
> ----
> <s:SparkSkin >
> <fx:Metadata>
> [HostComponent("demand.reports.DRDoc")]
> </fx:Metadata>
> <s:states>
> <s:State name="normal"/>
> </s:states>
> <controls:DCDocTitleBar id="titleBar" />
> </s:SparkSkin>
> ----
>
>
> Thanks in advance!
>
> ~Aaron
>
