org.jscroll.widgets
Class DesktopListener

java.lang.Object
  |
  +--org.jscroll.widgets.DesktopListener

All Implemented Interfaces:

ActionListener, ComponentListener, EventListener

public class DesktopListener

extends Object

implements ComponentListener, ActionListener

This class provides common Component and Action Listeners for other objects in the system.

Version:

1.0 11-Aug-2001

Author:

Tom Tessier

Constructor Summary

DesktopListener(DesktopMediator desktopMediator)
creates the DesktopListener object.

Method Summary

void	actionPerformed(ActionEvent e) common actionPerformed method that responds to both button and menu events.
void	componentHidden(ComponentEvent e) interface placeholder
void	componentMoved(ComponentEvent e) updates the preferred size of the desktop when a component is moved
void	componentResized(ComponentEvent e) updates the preferred size of the desktop when either an internal frame or the scrollable desktop pane itself is resized
void	componentShown(ComponentEvent e) revalidates the desktop to ensure the viewport has the proper height/width settings when a new component is shown upon the desktop

Methods inherited from class java.lang.Object

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

Constructor Detail

DesktopListener

public DesktopListener(DesktopMediator desktopMediator)

creates the DesktopListener object.

Parameters:

desktopMediator - a reference to the DesktopMediator object

Method Detail

componentResized

public void componentResized(ComponentEvent e)

updates the preferred size of the desktop when either an internal frame or the scrollable desktop pane itself is resized

Specified by:

componentResized in interface ComponentListener

Parameters:

e - the ComponentEvent

componentShown

public void componentShown(ComponentEvent e)

revalidates the desktop to ensure the viewport has the proper height/width settings when a new component is shown upon the desktop

Specified by:

componentShown in interface ComponentListener

Parameters:

e - the ComponentEvent

componentMoved

public void componentMoved(ComponentEvent e)

updates the preferred size of the desktop when a component is moved

Specified by:

componentMoved in interface ComponentListener

Parameters:

e - the ComponentEvent

componentHidden

public void componentHidden(ComponentEvent e)

interface placeholder

Specified by:

componentHidden in interface ComponentListener

Parameters:

e - the ComponentEvent

actionPerformed

public void actionPerformed(ActionEvent e)

common actionPerformed method that responds to both button and menu events. If no action command provided in the ActionEvent, selects the frame associated with the current button / menu item (if any).

Specified by:

actionPerformed in interface ActionListener

Parameters:

e - the ActionEvent