AjaxEventBehavior and associated components should feature Hot Key integration
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Key: WICKET-538
URL: https://issues.apache.org/jira/browse/WICKET-538
Project: Wicket
Issue Type: Improvement
Components: wicket
Environment: Java 2.6.20-15-generic, Java 6
Reporter: Julian Klappenbach
Priority: Minor
The idea of hot keys was actually born of the desire to trap keyhits on a top
level basis (body.onKeyDown) to ensure that focus issues would not interfere
with appropriate default processing. Basically, if one is working with a
ModalWindow, both <CR> and <ESC> should invoke the behavior established by
decades of UI history. In order to achieve this, I've constructed a javascript
map, which associates keycodes generated through keydown events with Ajax
calls. Initially, the focus was just for forms and ModalWindows. But I soon
discovered that the functionality could be extended to general hotkeys, where
specific keys could be tied to ajax behaviors (swapping panels, invoking submit
behavior, etc). The benefit to the approach of having body.onKeyDown dispatch
key events to a map is that there is a 1:n mapping of behaviors. Also, it
removes the necessity of having to assign handlers to each component within a
form or page, which is a rather heavy handed exercise. The complete solution
would require modifications to AjaxEventBehavior, as well as some a few of the
Ajax based components with the intent of establishing a corresponding keycode
to trigger the event from the keyboard. I realize that this is a rather
special case, bu it is still one that both solves pressing issues with the
current implementation, as well as providing hot keys, which should be of value
to the greater user community.
I have completed most of the changes and would be more than happy to offer my
code up for review.
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