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https://issues.apache.org/jira/browse/TAP5-194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Drobiazko reassigned TAP5-194:
-----------------------------------
Assignee: Igor Drobiazko
> Submit Button missing context and image support
> -----------------------------------------------
>
> Key: TAP5-194
> URL: https://issues.apache.org/jira/browse/TAP5-194
> Project: Tapestry 5
> Issue Type: Improvement
> Affects Versions: 5.0.15
> Reporter: Cherry Development
> Assignee: Igor Drobiazko
> Attachments: SubmitContext.java
>
>
> The Submit component has two major deficiencies:
> 1) You cannot use an image submit ( <input type="image" /> )
> 2) You cannot pass any context into the button's "selected" event handler.
> Issue 1 currently requires you to create your own submit button type, though
> this is simple if you don't mind copy/pasting the current Submit class and
> changing one line.
> Issue 2 is a much bigger problem. If you have a submit button in a loop and
> need to know (for example) which item was current in the loop when it was
> rendered, you have to set "defer" to false, then record the context
> information in your onSelected handler. You often can't perform a useful
> action directly in your deferred onSelected handler because you shouldn't
> change the structure of your bound data in the middle of a form submit, or
> because you should not perform your action until you're assured the form has
> validated.
> So, you now have to record the context that you need to perform the action,
> PLUS the action that needs to be performed, and then perform it all inside of
> your onSuccess handler! Frankly, this seems so inelegant as to have been an
> oversight.
> On the Tapestry Wiki, at
> http://wiki.apache.org/tapestry/Tapestry5SubmitContextComponent there is a
> basic implementation, though it has several weaknesses:
> 1) It was written for 5.0.4 and doesn't compile without changing a few minor
> things, nor does it support RenderDisabled.
> 2) It only supports a single context parameter and it makes no effort to
> properly encode it when rendered to the client.
> So, based on the concept used on the wiki code (namely, using a <hidden>
> field to store the context) I made a few small modifications to the Tapestry
> 5.0.11 Submit.java class that I will attach to this issue.
> I grant ownership of the attached code to the Apache Software Foundation.
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