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https://issues.apache.org/jira/browse/TAP5-801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Drobiazko closed TAP5-801.
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Resolution: Fixed
Fix Version/s: 5.2.0.0
> Add Trigger component to trigger a component event during rendering
> -------------------------------------------------------------------
>
> Key: TAP5-801
> URL: https://issues.apache.org/jira/browse/TAP5-801
> Project: Tapestry 5
> Issue Type: New Feature
> Components: tapestry-component-report
> Affects Versions: 5.1.0.5
> Reporter: Howard M. Lewis Ship
> Assignee: Igor Drobiazko
> Priority: Minor
> Fix For: 5.2.0.0
>
>
> It would be nice if it were possible to trigger an arbitrary component event
> during rendering; this is often useful to add JavaScript to a page (via calls
> to the RenderSupport environmental).
> Currently this can be accomplished using Delegator and providing a Renderable
> object (as an anonymous inner class) ... but that's ugly, i.e.
> <t:delegate to="wireEventHandlers"/>
> public Renderable getWireEventHandlers()
> {
> return new Renderable()
> {
> public void render(MarkupWriter writer)
> {
> ...
> }
> };
> }
> I would rather something like:
> <t:triggerevent event="wireEventHandlers"/>
> void onWireEventHandlers()
> {
> ...
> }
> The MarkupWriter could be passed as the event context, for handlers that need
> to write markup as well as perform other functions.
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