bibliothek.gui.dock.control.focus

Class FocusTracker

java.lang.Object

bibliothek.gui.dock.control.focus.FocusTracker

public class FocusTracker
extends Object

A focus tracker keeps information about the last focused Component of some Container.

Author:

Benjamin Sigg

Constructor Summary

Constructors

Constructor and Description
FocusTracker(Component root) Creates a new focus tracker.

Method Summary

Modifier and Type	Method and Description
protected void	add(Component component) Adds listeners to component and its children to track the focus.
void	destroy() Removes any listeners this FocusTracker added anywhere allowing this FocusTracker to be collected by the garbage collector.
Component	getLastFocused() Gets the last component that was focused
protected void	remove(Component component) Removes listeners from component and its children.

Methods inherited from class java.lang.Object

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

Constructor Detail

FocusTracker

public FocusTracker(Component root)

Creates a new focus tracker.

Parameters:

root - the root container whose children can be focused

Method Detail

destroy

public void destroy()

Removes any listeners this FocusTracker added anywhere allowing this FocusTracker to be collected by the garbage collector.

getLastFocused

public Component getLastFocused()

Gets the last component that was focused

Returns:

the last component, can be null, will be a child of the root container or the root container itself

add

protected void add(Component component)

Adds listeners to component and its children to track the focus.

Parameters:

component - the component and its children to track

remove

protected void remove(Component component)

Removes listeners from component and its children.

Parameters:

component - the component to remove