[TAPESTRY-1476] Component events for input translation and validation

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.0
• Fix Version/s: 5.0.7
• Assignee: Howard Lewis Ship
• Reporter: Howard Lewis Ship
• Created: 17/May/07 23:50
• Updated: 16/Nov/07 18:46
• Resolved: 16/Nov/07 18:46

Description

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!