Keyboard shortcuts and navigation are indispensable time savers for an application's frequent and power users. Who among us has not quickly learned the keyboard shortcuts for performing common tasks within an application that we use regularly?
Unfortunately, one of the more common complaints against web-based applications is that they are, in many instances, lacking when it comes to supporting keyboard shortcuts and navigation. Frankly, the lack of keyboard support (both shortcuts and navigation) is something that has annoyed me about the Zimbra Collaboration Suite (ZCS), and it is something that I have been wanting to add to both Kabuki (the Zimbra Ajax Toolkit) and the ZCS; however, I didn't want to just stuff in some basic keyboard shortcuts and call it a day. Instead, I wanted to have a go at implementing the same level of keyboard support that most traditional UI toolkits and desktop applications support. This actually turned out to involve quite a bit of work - for example, since only input elements may have focus (in most browsers) we needed to simulate and track focus for toolkit components which frequently have no native input element associated with them - but at the end of the day, I think it was worth the effort.
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