Package edu.cnu.mdi.component

Class DrawnComponentManager

java.lang.Object

edu.cnu.mdi.component.DrawnComponentManager

public final class DrawnComponentManager
extends Object

Shared animation manager for drawn buttons.

The manager owns one Swing Timer. Animated buttons register when they become displayable and unregister when removed from the Swing hierarchy. The timer stops when no animated buttons remain.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_DELAY	Milliseconds between animation frames, roughly 30 frames per second.

Method Summary

Modifier and Type	Method	Description
long	getFrameCount()	Returns the number of elapsed animation frames.
static DrawnComponentManager	getInstance()	Returns the shared animation manager.
void	register(AbstractButton button)	Registers a button for animation repainting.
void	unregister(AbstractButton button)	Unregisters a button from animation repainting.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_DELAY

public static final int DEFAULT_DELAY

Milliseconds between animation frames, roughly 30 frames per second.

See Also:

• Constant Field Values

Method Details

getInstance

public static DrawnComponentManager getInstance()

Returns the shared animation manager.

Returns:

the singleton manager

register

public void register(AbstractButton button)

Registers a button for animation repainting.

Parameters:

button - the button to repaint on animation frames

unregister

public void unregister(AbstractButton button)

Unregisters a button from animation repainting.

Parameters:

button - the button to unregister

getFrameCount

public long getFrameCount()

Returns the number of elapsed animation frames.

Returns:

the current frame count