[jira] Closed: (TAPESTRY-1476) Component events for input translation and validation

["Howard M. Lewis Ship (JIRA)" <de...@tapestry.apache.org>]

     [ https://issues.apache.org/jira/browse/TAPESTRY-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Howard M. Lewis Ship closed TAPESTRY-1476.
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       Resolution: Fixed
    Fix Version/s: 5.0.7

> Component events for input translation and validation
> -----------------------------------------------------
>
>                 Key: TAPESTRY-1476
>                 URL: https://issues.apache.org/jira/browse/TAPESTRY-1476
>             Project: Tapestry
>          Issue Type: New Feature
>    Affects Versions: 5.0
>            Reporter: Howard M. Lewis Ship
>            Assignee: Howard M. Lewis Ship
>             Fix For: 5.0.7
>
>
> It seems to me we could leverage the existing component event hierarchy to allow for tightly customized input translation and parsing.
> I would propose three component events:
> "toclient" : corresponds to Translator.toClient().  Passed an object as the context (possibly null), result must be a String.
> "parseclient": corresponds to Translator.parseClient().  Passed a string as the context, returns an object or throws ValidationException.
> "validate": corresponds to Validator.validateInput().  Passed an object (provided by the translator).  No return value.  May throw ValidationException.
> We'll have to come up with a better mechanism for allowing event handler methods to throw an exception.  Currently, I suspect, that you would get Javassist compile errors if you try!

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