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https://issues.apache.org/jira/browse/TAP5-103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727625#action_12727625
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Robert Zeigler commented on TAP5-103:
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That's only true if the user provides an explicit binding. Often, the user will
rely on component-provided defaults, and a mixin may want to alter those
defaults, or at least have clean access to the values.
> 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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