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POFlex 4 Skin: Change skin based on parent containers state
 

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  1. POFlex 4 Skin: Change skin based on parent containers state
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    <p>I have a custom component <em>ExpandCollapseMenu</em> that extends <em>SkinnableContainer</em>. This component can have state "normal" or "expanded".<br> Inside this component I have buttons, with different skin based on ExpandCollapseMenu's state.<br> This works fine when defining the buttons inside ExpandCollapsMenu's skin class:</p> <pre><code>&lt;s:Group id="contentGroup" top="20" left="10" right="10" bottom="10"&gt; &lt;s:layout&gt; &lt;s:VerticalLayout/&gt; &lt;/s:layout&gt; &lt;component:ExpandCollapseMenuButton label="Foo" skinClass.expanded="component.ExpandCollapseMenuButtonExpandedSkin" skinClass.normal="component.ExpandCollapseMenuButtonSkin" /&gt; &lt;/s:Group&gt; </code></pre> <p>But I don't want to define the buttons inside ExpandCollapsMenu's skin class, I want to define them where I use ExpandCollapseMenu. Like this:</p> <pre><code>&lt;component:ExpandCollapseMenu skinClass="component.ExpandCollapseMenuSkin"&gt; &lt;component:ExpandCollapseMenuButton label="Foo" /&gt; &lt;/component:ExpandCollapseMenu&gt; </code></pre> <p>At this level, I can't reference <em>skinclass.expanded</em>, but I got it working by using CSS like this:</p> <pre><code>component|ExpandCollapseMenu:expanded component|ExpandCollapseMenuButton { skinClass: ClassReference("component.ExpandCollapseMenuButtonExpandedSkin"); } component|ExpandCollapseMenu:normal component|ExpandCollapseMenuButton { skinClass: ClassReference("component.ExpandCollapseMenuButtonSkin"); } </code></pre> <p>Is this a good way to change skin based on parent containers state? Or is there a better way?</p>
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    1. COCan I ask what you're trying to do? Your methods are very non-standard and I think there might be a better way of doing this.
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    2. COCreate a vertical menu panel, with buttons, toggle buttons etc. All menu elements have a narrow and wide state. Mouseover menu panel = show wide version of all buttons, mouseout = show narrow version.
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    3. COHow is the narrow version different than the wide version? Also, when changing states, why are you changing skins?! You do know that Flex skins can have states as well right? They're based on the component states (which can be overwritten/modified). I suggest you read up on skin states and would instead have the children check what's their size to change states between wide and narrow since the parent wouldn't need to 'tell' them.
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