com.lightdev.app.shtm
Class FrmMain.RepeatKeyWatcher

java.lang.Object
  com.lightdev.app.shtm.FrmMain.RepeatKeyWatcher

All Implemented Interfaces:

java.awt.event.KeyListener, java.util.EventListener

Enclosing class:

FrmMain

public class FrmMain.RepeatKeyWatcher
extends java.lang.Object
implements java.awt.event.KeyListener

watch for key events that are automatically repeated due to the user holding down a key.

When a key is held down by the user, every keyPressed event is followed by a keyTyped event and a keyReleased event although the key is actually still down. I.e. it can not be determined by a keyReleased event if a key actually is released, which is why this implementation is necessary.

Constructor Summary

FrmMain.RepeatKeyWatcher(long delay)
construct a RepeatKeyWatcher

Method Summary

boolean	isRepeating() indicate whether or not a key is being held down
void	keyPressed(java.awt.event.KeyEvent e) handle a keyPressed event by cancelling the previous release task (if any) and indicating repeated key press as applicable.
void	keyReleased(java.awt.event.KeyEvent e) handle a keyReleased event by scheduling a ReleaseTask.
void	keyTyped(java.awt.event.KeyEvent e)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FrmMain.RepeatKeyWatcher

public FrmMain.RepeatKeyWatcher(long delay)

construct a RepeatKeyWatcher

Parameters:

delay - the delay in milliseconds until a keyReleased event should be handled

Method Detail

keyPressed

public void keyPressed(java.awt.event.KeyEvent e)

handle a keyPressed event by cancelling the previous release task (if any) and indicating repeated key press as applicable.

Specified by:

keyPressed in interface java.awt.event.KeyListener

keyReleased

public void keyReleased(java.awt.event.KeyEvent e)

handle a keyReleased event by scheduling a ReleaseTask.

Specified by:

keyReleased in interface java.awt.event.KeyListener

keyTyped

public void keyTyped(java.awt.event.KeyEvent e)

Specified by:

keyTyped in interface java.awt.event.KeyListener

isRepeating

public boolean isRepeating()

indicate whether or not a key is being held down

Returns:

true if a key is being held down, false if not