AlertDialog doesn't trap tabs or set focus to the button
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Key: TAPESTRY-1102
URL: http://issues.apache.org/jira/browse/TAPESTRY-1102
Project: Tapestry
Issue Type: Bug
Components: JavaScript
Affects Versions: 4.1.1
Reporter: Greg Woolsey
The AlertDialog widget used by the validation framework has a couple of
navigation issues:
1) When it comes up, the "OK" button doesn't have the focus, but it appears to
the user to be the only active page element.
2) Users can tab and shift-tab away from the dialog and enter data in form
fields behind the bakground iframe. This is non-intuitive, and almost always
undesired behavior.
It appears from the parent class, DoJo's Dialog.js that giving the button a
tabIndex, setting it as this.tabStart, and setting initial focus to it should
fix these.
Hard-core would be to trap all keystrokes and stop any key event that wasn't
space or enter, but that's probably more of a hammer than is needed.
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