Listening to OTHER keypress event while using JLIST

Posted on 2003-03-30
Medium Priority
Last Modified: 2008-02-01
Hi Experts,
  I am using JLIST (javax.swing.*) to implement some functionality. My code listens to the UPARROW and DNARROW key automatically. Now I want to listen to other keys (like LEFTARROW and RTARROW) in my program to implement some other functionality (Like starting/stopping timer). I tried the following:

"frame.addKeyListener(translation)" where translation implements KeyListener. But since I'm using JLIST, I'm unable to listen to these keypress events.

Please help.
- Namit
Question by:namitkabra
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LVL 35

Accepted Solution

TimYates earned 700 total points
ID: 8235306
Assuming your list is called "jList1", this should work...


final String LEFT_ARROW = "left-arrow";
final String RIGHT_ARROW = "right-arrow";

jList1.getInputMap( JComponent.WHEN_IN_FOCUSED_WINDOW ).put( KeyStroke.getKeyStroke( KeyEvent.VK_LEFT, 0), LEFT_ARROW );
jList1.getActionMap().put( LEFT_ARROW, new AbstractAction()
          public void actionPerformed(ActionEvent event)
            System.out.println( "Left pressed on list" ) ;
        } );
jList1.getInputMap( JComponent.WHEN_IN_FOCUSED_WINDOW ).put( KeyStroke.getKeyStroke( KeyEvent.VK_RIGHT, 0), RIGHT_ARROW );
jList1.getActionMap().put( RIGHT_ARROW, new AbstractAction()
          public void actionPerformed(ActionEvent event)
            System.out.println( "Right pressed on list" ) ;
        } );

Author Comment

ID: 8246851

Thanks a lot TimYates. You are a life saviour!!!

Initially it was'nt working. Then I changed the JComponent.WHEN_IN_FOCUSED_WINDOW to JComponent.WHEN_FOCUSED and it did the trick!!!

PS: Thanks experts-exchange
LVL 35

Expert Comment

ID: 8248329
:-)  Glad I could help :-)

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