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https://issues.apache.org/jira/browse/TAP5-1861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720031#comment-13720031
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Howard M. Lewis Ship commented on TAP5-1861:
--------------------------------------------
No, we still have this issue.
I can definitely see the need for a facade to handle this situation. Probably,
the JavaScriptSupport interface could be used; most methods would throw an
IllegalStateException, a few, such as require(), would capture results and add
them to AjaxResponseRenderer.
> Wrap javascript call rendering apis for interoperability and convenience
> ------------------------------------------------------------------------
>
> Key: TAP5-1861
> URL: https://issues.apache.org/jira/browse/TAP5-1861
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.3.2
> Reporter: Paul Stanton
> Labels: ajax, javascript
>
> Vast improvements to the ajax and javascript rendering API's have made things
> much easier to use in tapestry 5.2+, however I still think there is room for
> improvement. I find I can't work without this 'helper' service I designed to
> standardise script call rendering between xhr and non-xhr requests. The main
> motivation/benefit is that a set of functionality can now be called in either
> (xhr/non-xhr) context and still work. It also has the benefit of building the
> necessary JavaScriptCallback in the xhr context. In my opinion, this makes
> user code much tidier:
> public class JavascriptHelperImpl implements JavascriptHelper
> {
> @Inject
> private AjaxResponseRenderer ajaxResponseRenderer;
> @Inject
> private Request request;
> @Inject
> private JavaScriptSupport jsSupport;
> @Override
> public void addScript(final String format, final Object... args)
> {
> if (!request.isXHR())
> {
> jsSupport.addScript(format, args);
> return;
> }
> ajaxResponseRenderer.addCallback(new JavaScriptCallback()
> {
> @Override
> public void run(JavaScriptSupport javascriptSupport)
> {
> javascriptSupport.addScript(format, args);
> }
> });
> }
> }
> There may or may not be additional opportunity with the other methods such as
> 'addInitializerCall' but I haven't needed to.
> This code is free for anyone (including apache/tapestry) to use.
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