EditablePlot.UndoListener

java.lang.Object
- ptolemy.plot.EditablePlot.UndoListener

All Implemented Interfaces:

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

Enclosing class:

EditablePlot
```
public class EditablePlot.UndoListener
extends java.lang.Object
implements java.awt.event.KeyListener
```
Control-Z is undo and Control-Y is redo.

Constructor Summary

Constructors
Constructor Description

UndoListener()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`keyPressed(java.awt.event.KeyEvent e)`	Handle Control, Z or Y being pressed with by calling undo() or redo().
`void`	`keyReleased(java.awt.event.KeyEvent e)`	Handle Control being released.
`void`	`keyTyped(java.awt.event.KeyEvent e)`	Ignored by this class.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UndoListener
```
public UndoListener()
```
- Method Detail
  - keyPressed
```
public void keyPressed(java.awt.event.KeyEvent e)
```
    Handle Control, Z or Y being pressed with by calling undo() or redo().
    
    Specified by:
    
    keyPressed in interface java.awt.event.KeyListener
    
    Parameters:
    
    e - The KeyEvent.
  - keyReleased
```
public void keyReleased(java.awt.event.KeyEvent e)
```
    Handle Control being released.
    
    Specified by:
    
    keyReleased in interface java.awt.event.KeyListener
    
    Parameters:
    
    e - The KeyEvent.
  - keyTyped
```
public void keyTyped(java.awt.event.KeyEvent e)
```
    Ignored by this class. The keyTyped method is broken in jdk 1.1.4. It always gets "unknown key code".
    
    Specified by:
    
    keyTyped in interface java.awt.event.KeyListener
    
    Parameters:
    
    e - Ignored by this method.