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From "Alfie Kirkpatrick (JIRA)" <j...@apache.org>
Subject [jira] Commented: (TAP5-103) provide access to component parameters from within mixins
Date Thu, 02 Jul 2009 09:49:47 GMT

    [ https://issues.apache.org/jira/browse/TAP5-103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12726411#action_12726411

Alfie Kirkpatrick commented on TAP5-103:

I have voted for this issue because I also think Howard's idea of somehow linking parameters
together would be really elegant if achievable.

But isn't there a simple workaround where we just duplicate the parameter between the mixin
and the container? I have a zone parameter on my overlay mixin so if I mix it with another
component that also has a zone parameter I need:

    <t:actionlink zone="zone1" overlay.zone="zone1">...</t:actionlink>

In my case it is a literal but if it was a property binding, wouldn't changes to the property
be propogated between the component and the mixin?

> provide access to component parameters from within mixins
> ---------------------------------------------------------
>                 Key: TAP5-103
>                 URL: https://issues.apache.org/jira/browse/TAP5-103
>             Project: Tapestry 5
>          Issue Type: New Feature
>    Affects Versions: 5.0.15
>            Reporter: Kristian Marinkovic
> A mixin can't access the parameters of a component because the Bindings property of the
InternalComponentResourcesImpl class is private and the respective interface does not provide
a access method. 
> I was trying to create a mixin that would render only the value of a form element  (without
the tags) when it was in a certain state. There also might be use cases where mixins are used
to collect data from the components they are attached and therefore also needs access to the
components parameters.
> see threads:
> http://www.nabble.com/Antwort%3A--T5--how-to-read-the-value-of-a-component-parameter-within-a-mixin-tf4487995.html
> http://www.nabble.com/-T5--how-to-read-the-value-of-a-component-parameter-within-a-mixin-tf4487597.html

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