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https://issues.apache.org/jira/browse/TAP5-1870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13640131#comment-13640131
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Paul Stanton commented on TAP5-1870:
------------------------------------
I've figured out that
JavaScriptSupport.addScript
a) works if called from setupRender/afterRender whether XHR or not
b) does not work when called from XHR event handlers
AjaxResponseRenderer.addCallback
a) works for XHR event handlers
b) does not work if called from setupRender/afterRender in an XHR request
Therefore, in the case of the setupRender/afterRender in an XHR request is
tricky .. One must detect that this is the context of the call.
> javascript added while in the render phase of a component from an ajax
> request is never executed
> ------------------------------------------------------------------------------------------------
>
> Key: TAP5-1870
> URL: https://issues.apache.org/jira/browse/TAP5-1870
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.3.2, 5.3.4
> Reporter: Paul Stanton
> Labels: ajax, javascript, zone
>
> When a zone update occurs, the 'setupRender' is called for each component
> contained by that zone.
> If a script is added to ajaxResponseRenderer within the 'setupRender' method
> it is never executed on the page.
> eg:
> public class MyPage
> {
> void onSomeEvent()
> {
> ajaxResponseRenderer.addRender(myZone); // myZone contains a
> MyComponent in the tml
> }
> }
> public class MyComponent
> {
> void setupRender()
> {
> if (request.isXHR())
> ajaxResponseRenderer.addCallback(new JavaScriptCallback() {
> public void run(JavaScriptSupport javascriptSupport) {
> javascriptSupport.addScript("alert('here');");}});
> }
> }
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