Package org.openstreetmap.josm.data.projection

Class ProjectionRegistry

java.lang.Object

org.openstreetmap.josm.data.projection.ProjectionRegistry

public final class ProjectionRegistry
extends java.lang.Object

Registry for a single, global projection instance.

Since:

14120

Field Summary

Fields

Modifier and Type	Field	Description
private static ProjectionBoundsProvider	boundsProvider
private static java.util.List<java.lang.ref.WeakReference<ProjectionChangeListener>>	listeners
private static Projection	proj	The projection method used.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ProjectionRegistry()

Method Summary

Modifier and Type	Method	Description
static void	addProjectionChangeListener(ProjectionChangeListener listener)	Register a projection change listener.
static void	clearProjectionChangeListeners()	Remove all projection change listeners.
private static void	fireProjectionChanged(Projection oldValue, Projection newValue, Bounds oldBounds)
static ProjectionBoundsProvider	getBoundsProvider()	Returns the bounds provider called in projection events.
static Projection	getProjection()	Replies the current projection.
static void	removeProjectionChangeListener(ProjectionChangeListener listener)	Removes a projection change listener.
static void	setboundsProvider(ProjectionBoundsProvider provider)	Sets the bounds provider called in projection events.
static void	setProjection(Projection p)	Sets the current projection

Methods inherited from class java.lang.Object

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

Field Detail

proj

private static volatile Projection proj

The projection method used. Use getProjection() and setProjection(Projection) for access. Use setProjection(Projection) in order to trigger a projection change event.

boundsProvider

private static ProjectionBoundsProvider boundsProvider

listeners

private static final java.util.List<java.lang.ref.WeakReference<ProjectionChangeListener>> listeners

Constructor Detail

ProjectionRegistry

private ProjectionRegistry()

Method Detail

getProjection

public static Projection getProjection()

Replies the current projection.

Returns:

the currently active projection

setProjection

public static void setProjection(Projection p)

Sets the current projection

Parameters:

p - the projection

fireProjectionChanged

private static void fireProjectionChanged(Projection oldValue,
                                          Projection newValue,
                                          Bounds oldBounds)

addProjectionChangeListener

public static void addProjectionChangeListener(ProjectionChangeListener listener)

Register a projection change listener. The listener is registered to be weak, so keep a reference of it if you want it to be preserved.

Parameters:

listener - the listener. Ignored if null.

removeProjectionChangeListener

public static void removeProjectionChangeListener(ProjectionChangeListener listener)

Removes a projection change listener.

Parameters:

listener - the listener. Ignored if null.

clearProjectionChangeListeners

public static void clearProjectionChangeListeners()

Remove all projection change listeners. For testing purposes only.

getBoundsProvider

public static ProjectionBoundsProvider getBoundsProvider()

Returns the bounds provider called in projection events.

Returns:

the bounds provider

setboundsProvider

public static void setboundsProvider(ProjectionBoundsProvider provider)

Sets the bounds provider called in projection events. Must not be null

Parameters:

provider - the bounds provider