org.openstreetmap.josm.gui.util

Class AdjustmentSynchronizer

java.lang.Object

org.openstreetmap.josm.gui.util.AdjustmentSynchronizer

All Implemented Interfaces:

AdjustmentListener, EventListener

public class AdjustmentSynchronizer
extends Object
implements AdjustmentListener

Synchronizes scrollbar adjustments between a set of Adjustables. Whenever the adjustment of one of the registered Adjustables is updated the adjustment of the other registered Adjustables is adjusted too.

Since:

6147

Field Summary

Fields

Modifier and Type	Field and Description
private Map<Adjustable,Boolean>	enabledMap
private Observable	observable
private List<Adjustable>	synchronizedAdjustables

Constructor Summary

Constructors

Constructor and Description
AdjustmentSynchronizer() Constructs a new AdjustmentSynchronizer

Method Summary

Modifier and Type	Method and Description
void	adapt(JCheckBox view, Adjustable adjustable) Wires a JCheckBox to the adjustment synchronizer, in such a way that: state changes in the checkbox control whether the adjustable participates in synchronized adjustment state changes in this AdjustmentSynchronizer are reflected in the JCheckBox
void	adjustmentValueChanged(AdjustmentEvent e) Event handler for AdjustmentEvents
protected boolean	isParticipatingInSynchronizedScrolling(Adjustable adjustable) Returns true if an adjustable is participating in synchronized scrolling
void	participateInSynchronizedScrolling(Adjustable adjustable) Registers an Adjustable for participation in synchronized scrolling.
protected void	setParticipatingInSynchronizedScrolling(Adjustable adjustable, boolean isParticipating) Sets whether adjustable participates in adjustment synchronization or not

Methods inherited from class java.lang.Object

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

Field Detail

synchronizedAdjustables

private final List<Adjustable> synchronizedAdjustables

enabledMap

private final Map<Adjustable,Boolean> enabledMap

observable

private final Observable observable

Constructor Detail

AdjustmentSynchronizer

public AdjustmentSynchronizer()

Constructs a new AdjustmentSynchronizer

Method Detail

participateInSynchronizedScrolling

public void participateInSynchronizedScrolling(Adjustable adjustable)

Registers an Adjustable for participation in synchronized scrolling.

Parameters:

adjustable - the adjustable

adjustmentValueChanged

public void adjustmentValueChanged(AdjustmentEvent e)

Event handler for AdjustmentEvents

Specified by:

adjustmentValueChanged in interface AdjustmentListener

setParticipatingInSynchronizedScrolling

protected void setParticipatingInSynchronizedScrolling(Adjustable adjustable,
                                                       boolean isParticipating)

Sets whether adjustable participates in adjustment synchronization or not

Parameters:

adjustable - the adjustable

isParticipatingInSynchronizedScrolling

protected boolean isParticipatingInSynchronizedScrolling(Adjustable adjustable)
                                                  throws IllegalStateException

Returns true if an adjustable is participating in synchronized scrolling

Parameters:

adjustable - the adjustable

Returns:

true, if the adjustable is participating in synchronized scrolling, false otherwise

Throws:

IllegalStateException - thrown, if adjustable is not registered for synchronized scrolling

adapt

public void adapt(JCheckBox view,
                  Adjustable adjustable)

Wires a JCheckBox to the adjustment synchronizer, in such a way that:

state changes in the checkbox control whether the adjustable participates in synchronized adjustment

state changes in this AdjustmentSynchronizer are reflected in the JCheckBox

Parameters:

view - the checkbox to control whether an adjustable participates in synchronized adjustment

adjustable - the adjustable

Throws:

IllegalArgumentException - thrown, if view is null

IllegalArgumentException - thrown, if adjustable is null