New tab-completion implementation

[GoogleCodeExporter]

When there are multiple results for a tab-completion, enter tab completion
mode:

Display a tooltip with a combo box listing the matches. Use arrow keys to
select the name, but continue to process user-input to narrow the search.
Tab and enter will choose the selected user and exit tab completion mode.
If typing causes the list to be narrowed to one result, instantly select it.

Extra Credit: An 'undo' action will return the text box to the state it was
in prior to when tab was pressed.

Original issue reported on code.google.com by sco...@gmail.com on 23 Nov 2007 at 7:39

[GoogleCodeExporter]

Do not make Enter a confirmation key. It will prevent people from sending 
words, when what they want to send 
is the beginning of someone's username.

Ex: person wants to type "king" when someone's username is "king-george" It 
will keep autocompleting king-
george, without letting the person only send "king"

Original comment by berzerk...@gmail.com on 23 Nov 2007 at 7:45

[GoogleCodeExporter]

This needs quite a bit more testing before it can be verified, but I've tested 
it to
work in Windows and OSX.

Original comment by sco...@gmail.com on 25 Nov 2007 at 11:17

• Changed state: Fixed