FormButtonBinding is there a replacement?

[rohdef]

In the old GXT 2 days, I used FormButtonBinding a lot, to make my buttons enable and disable themselves depending on if a FormPanel was valid or invalid.

However I see that the class doesn't exist any more, and also a lot of examples have moved away from the FormPanel. That's all fine apart from two useful details: VerticalLayoutContainer does not have an isValid for fast and easy validation and the missing FormButtonBinding as previously mentioned.

I could create something similar myself, but then some questions occurs:

• There must be a reason for moving away from FormPanel for the examples? Does it mean I shouldn't use it, unless I need to submit data to some non-GWT-service?
• Is there a replacement for FormButtonBinding? If not there's probably a good reason for it's removal?
• Is there a good way to achieve this functionality? Some method, class or similar I just don't find?

[PhiLho]

I mentioned today GWT-Pectin which seems well suited to this usage. I don't know how it overlaps with existing validation facilities of GXT3. Disclaimer: I haven't really used this library yet, I just find the demo quite convincing...

[rohdef]

GWT-Pectin looks promising, I'll give it a try as soon as I've tested the current changes to my code

[rohdef]

On a further look it looks overly complex for what I need. It would be way faster to just extend the FormPanel and just add events to the added fields and then do the magic on those.

[iran]

I miss FormButtonBinding too. Seems like we're all gonna have to do our own implementations to get that functionality... =/