PrimeRevenue/tent — pull request #52 by niallfallon (2012-10-24 10:30:25+00:00)
Title: Feature/error buttons

Buttons now have a 'validate' property. This will cause all widgets in the same form to validate themselves and report any errors to the MessagePanel. If there are errors, the button will be disabled and its action will not be triggered. When all widget validations have been passed, the button will become enabled.