lava.gui
Class KeystrokeBuffer

java.lang.Object
  |
  +--java.awt.event.KeyAdapter
        |
        +--lava.gui.KeystrokeBuffer

All Implemented Interfaces:

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

public class KeystrokeBuffer

extends java.awt.event.KeyAdapter

Buffers component keystrokes.

Details: A KeystrokeBuffer is a KeyAdapter that listens for and buffers all keyTyped calls. Calls to getKey return the next buffered character, or block until a character is typed. This class is thread-safe.

Version:

1999.04.24

Field Summary

protected FifoQueue

queue The keyTyped buffer.

Constructor Summary

KeystrokeBuffer()
Constructs an instance of KeystrokeBuffer.

Method Summary

int	getKey() Returns the next character in the buffer, or blocks for a character if the queue is empty.
void	keyTyped(java.awt.event.KeyEvent e) Converts the given KeyEvent into a character and stored it in the buffer.

Methods inherited from class java.awt.event.KeyAdapter

keyPressed, keyReleased

Methods inherited from class java.lang.Object

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

Field Detail

queue

protected FifoQueue queue

The keyTyped buffer. Keytyped events are converted into Character objects and stored in this queue.

Constructor Detail

KeystrokeBuffer

public KeystrokeBuffer()

Constructs an instance of KeystrokeBuffer.

Method Detail

keyTyped

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

Converts the given KeyEvent into a character and stored it in the buffer.

Overrides:

keyTyped in class java.awt.event.KeyAdapter

Parameters:

e - the KeyEvent

getKey

public int getKey()

Returns the next character in the buffer, or blocks for a character if the queue is empty.

Returns:

the next character