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Event/Focus/Key Listener Problem.

Posted on 1998-06-01
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Last Modified: 2010-04-16
I am trying to write a java GUI application where one of the screen is to have several buttons.  I want to make it where I can simply type in (using the keyboard) a specified key and have the focus transfer from one key to the specified key.  For example, if key "A" has the focus and I want key "C" to gain the focus from key "A", I just want to press key C on the keyboard and not use the mouse.  This application is written for a power user I guess.
I can make the focus traverse the button list so that's not what I want, I want the focus to pass button B if its presently on button A and I type C on the keyboard.
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Question by:visa
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5 Comments
 

Author Comment

by:visa
ID: 1221849
Edited text of question
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Expert Comment

by:evijay
ID: 1221850
Write a focus manager class which maintains a list of buttons (vector) whose focus need to be
managed. This focus manager class implements the KeyListener interface. It registers itself as a valid keylistener for all the buttons in the list. Also, register this focusmanager class as key listener to the  parent of all the buttons When a key event occurs on a button, the focus manager class callback gets called. In this keyPress method, send the focus to appropriate component using requestFocus method of that component (button).
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niges earned 30 total points
ID: 1221851
evijay: as that is a correct answer, why didn't you post it as an answer...

--nige

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Expert Comment

by:niges
ID: 1221852
D'oh please reject that answer, I meant it as a comment not answer.

--Nige
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Author Comment

by:visa
ID: 1221853
I understand the solution for the most part, but I do not understand fully the part about the "parent" of the buttons.  I don't exactly understand what this "parent" is.  Please clarify this to me.  Thanks.

Visa
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