bibliothek.gui.dock.dockable
Class DockableStateListenerManager

java.lang.Object
  bibliothek.gui.dock.dockable.DockableStateListenerManager

public class DockableStateListenerManager
extends java.lang.Object

A handler for invoking DockableStateListeners. Can be used by Dockables.
Note:

• This listener does not create any new information, it only combines events from other listeners.
• This listener receives its events delayed in order to put as much information as possible into one event.
• Due to this delay, this listener may seem to receive events too late. However, once all events are received, the state described by this listener and by other listeners matches again.

Author:

Benjamin Sigg

Constructor Summary

DockableStateListenerManager(Dockable dockable)
Creates a new manager.

Method Summary

void	addListener(DockableStateListener listener) Adds a listener to this observer.
void	checkVisibility() Rechecks the visibility state and may fire an event if the visibility changed.
void	event(int flags) Informs this observer that dockable changed.
protected boolean	hasListeners() Tells whether there is at least one DockableStateListener registered.
protected void	install() Activates this observer.
void	removeListener(DockableStateListener listener) Removes a listener from this observer
protected void	uninstall() Deactivates this observer.

Methods inherited from class java.lang.Object

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

Constructor Detail

DockableStateListenerManager

public DockableStateListenerManager(Dockable dockable)

Creates a new manager.

Parameters:

dockable - the observed element

Method Detail

checkVisibility

public void checkVisibility()

Rechecks the visibility state and may fire an event if the visibility changed.

addListener

public void addListener(DockableStateListener listener)

Adds a listener to this observer.

Parameters:

listener - the new listener

removeListener

public void removeListener(DockableStateListener listener)

Removes a listener from this observer

Parameters:

listener - the listener to remove

hasListeners

protected boolean hasListeners()

Tells whether there is at least one DockableStateListener registered.

Returns:

whether there is at least one listener

event

public void event(int flags)

Informs this observer that dockable changed. The flags are created using the constants from DockableStateEvent.

Parameters:

flags - the changes

install

protected void install()

Activates this observer.

uninstall

protected void uninstall()

Deactivates this observer.