The RenderNotification Mixin should documented with an example
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Key: TAP5-1707
URL: https://issues.apache.org/jira/browse/TAP5-1707
Project: Tapestry 5
Issue Type: Improvement
Components: tapestry-core
Affects Versions: 5.3
Reporter: Steve Eynon
Priority: Trivial
The RenderNotification Mixin seems to be an idiomatic way to generate render
phase 'like' events during an Ajax rendering. But alas the concept is a tricky
one with a couple of gotchas and could really do with a worked example (in the
JavaDocs) to fully explain its usage.
The email thread is :
http://tapestry.1045711.n5.nabble.com/T5-2-Looking-For-A-RenderNotification-Mixin-Example-td4917771.html
I've picked out some relevant bits...
I would like some pre and post render events to be fired on a component after
it's handled an Ajax event and returned a Zone which it contains.
<div t:type="Zone" id="zone">
<div t:type="Any" t:mixins="RenderNotification">
<!-- zone content ->
</div>
</div>
When the Any component renders as a whole, it receives the render phase methods
which are picked up the Mixin. The Mixin then fires its own component events
with the same name, which bubble up the component hierarchy.
But the beforeRender and afterRender triggered by this mixins are not render
events, so they should be handled by onBeforeRender[FromComponentId] and
onAfterRender[FromComponentId] methods or @OnEvent(value = "afterRender",
component = "id"). In both cases, the component id is optional.
Nice one - I may have overlooked the onBeginRender() vs beginRender().
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