org.openstreetmap.josm.data.osm.visitor.paint.relations

Class MultipolygonCache

java.lang.Object

org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache

All Implemented Interfaces:

DataSetListener, ProjectionChangeListener, SelectionChangedListener, MapView.LayerChangeListener

public final class MultipolygonCache
extends java.lang.Object
implements DataSetListener, MapView.LayerChangeListener, ProjectionChangeListener, SelectionChangedListener

A memory cache for Multipolygon objects.

Since:

4623

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<NavigatableComponent,java.util.Map<DataSet,java.util.Map<Relation,Multipolygon>>>	cache
private static MultipolygonCache	INSTANCE
private java.util.Collection<Multipolygon.PolyData>	selectedPolyData

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MultipolygonCache()

Method Summary

Modifier and Type	Method and Description
void	activeLayerChange(Layer oldLayer, Layer newLayer) Notifies this listener that the active layer has changed.
void	clear() Clears the whole cache.
void	clear(DataSet ds) Clears the cache for the given dataset.
void	clear(NavigatableComponent nc) Clears the cache for the given navigatable component.
void	dataChanged(DataChangedEvent event) Called after big changes in dataset.
private void	dispatchEvent(AbstractDatasetChangedEvent event, Relation r, java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)
Multipolygon	get(NavigatableComponent nc, Relation r) Gets a multipolygon from cache.
Multipolygon	get(NavigatableComponent nc, Relation r, boolean forceRefresh) Gets a multipolygon from cache.
static MultipolygonCache	getInstance() Replies the unique instance.
private java.util.Collection<java.util.Map<Relation,Multipolygon>>	getMapsFor(DataSet ds)
private static boolean	isMultipolygon(OsmPrimitive p)
void	layerAdded(Layer newLayer) Notifies this listener that a layer has been added.
void	layerRemoved(Layer oldLayer) Notifies this listener that a layer has been removed.
void	nodeMoved(NodeMovedEvent event) A node's coordinates were modified.
void	otherDatasetChange(AbstractDatasetChangedEvent event) Minor dataset change, currently only changeset id changed is supported, but can be extended in future.
void	primitivesAdded(PrimitivesAddedEvent event) A bunch of primitives were added into the DataSet, or existing deleted/invisible primitives were resurrected.
void	primitivesRemoved(PrimitivesRemovedEvent event) A bunch of primitives were removed from the DataSet, or preexisting primitives were marked as deleted.
private void	processEvent(AbstractDatasetChangedEvent event, Relation r, java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)
void	projectionChanged(Projection oldValue, Projection newValue)
void	relationMembersChanged(RelationMembersChangedEvent event) A relation's members have changed.
private void	removeMultipolygonFrom(Relation r, java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)
void	selectionChanged(java.util.Collection<? extends OsmPrimitive> newSelection) Informs the listener that the selection in the dataset has changed.
void	tagsChanged(TagsChangedEvent event) There was some change in the tag set of a primitive.
private void	updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event)
private void	updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event, java.util.Collection<? extends OsmPrimitive> primitives, DataSet ds)
private java.util.Collection<java.util.Map<Relation,Multipolygon>>	updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event, java.util.Collection<? extends OsmPrimitive> primitives, DataSet ds, java.util.Collection<java.util.Map<Relation,Multipolygon>> initialMaps)
void	wayNodesChanged(WayNodesChangedEvent event) A way's node list was changed.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

private static final MultipolygonCache INSTANCE

cache

private final java.util.Map<NavigatableComponent,java.util.Map<DataSet,java.util.Map<Relation,Multipolygon>>> cache

selectedPolyData

private final java.util.Collection<Multipolygon.PolyData> selectedPolyData

Constructor Detail

MultipolygonCache

private MultipolygonCache()

Method Detail

getInstance

public static final MultipolygonCache getInstance()

Replies the unique instance.

Returns:

the unique instance

get

public final Multipolygon get(NavigatableComponent nc,
                              Relation r)

Gets a multipolygon from cache.

Parameters:

nc - The navigatable component

r - The multipolygon relation

Returns:

A multipolygon object for the given relation, or null

get

public final Multipolygon get(NavigatableComponent nc,
                              Relation r,
                              boolean forceRefresh)

Gets a multipolygon from cache.

Parameters:

nc - The navigatable component

r - The multipolygon relation

forceRefresh - if true, a new object will be created even of present in cache

Returns:

A multipolygon object for the given relation, or null

clear

public final void clear(NavigatableComponent nc)

Clears the cache for the given navigatable component.

Parameters:

nc - the navigatable component

clear

public final void clear(DataSet ds)

Clears the cache for the given dataset.

Parameters:

ds - the data set

clear

public final void clear()

Clears the whole cache.

getMapsFor

private final java.util.Collection<java.util.Map<Relation,Multipolygon>> getMapsFor(DataSet ds)

isMultipolygon

private static final boolean isMultipolygon(OsmPrimitive p)

updateMultipolygonsReferringTo

private final void updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event)

updateMultipolygonsReferringTo

private final void updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event,
                                                  java.util.Collection<? extends OsmPrimitive> primitives,
                                                  DataSet ds)

updateMultipolygonsReferringTo

private final java.util.Collection<java.util.Map<Relation,Multipolygon>> updateMultipolygonsReferringTo(AbstractDatasetChangedEvent event,
                                                                                                        java.util.Collection<? extends OsmPrimitive> primitives,
                                                                                                        DataSet ds,
                                                                                                        java.util.Collection<java.util.Map<Relation,Multipolygon>> initialMaps)

processEvent

private final void processEvent(AbstractDatasetChangedEvent event,
                                Relation r,
                                java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)

dispatchEvent

private final void dispatchEvent(AbstractDatasetChangedEvent event,
                                 Relation r,
                                 java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)

removeMultipolygonFrom

private final void removeMultipolygonFrom(Relation r,
                                          java.util.Collection<java.util.Map<Relation,Multipolygon>> maps)

primitivesAdded

public void primitivesAdded(PrimitivesAddedEvent event)

Description copied from interface: DataSetListener

A bunch of primitives were added into the DataSet, or existing deleted/invisible primitives were resurrected.

Specified by:

primitivesAdded in interface DataSetListener

Parameters:

event - An event for an collection of newly-visible primitives

primitivesRemoved

public void primitivesRemoved(PrimitivesRemovedEvent event)

Description copied from interface: DataSetListener

A bunch of primitives were removed from the DataSet, or preexisting primitives were marked as deleted.

Specified by:

primitivesRemoved in interface DataSetListener

Parameters:

event - An event for an collection of newly-invisible primitives

tagsChanged

public void tagsChanged(TagsChangedEvent event)

Description copied from interface: DataSetListener

There was some change in the tag set of a primitive. It can have been a tag addition, tag removal or change in tag value.

Specified by:

tagsChanged in interface DataSetListener

Parameters:

event - the event for the primitive, whose tags were affected.

nodeMoved

public void nodeMoved(NodeMovedEvent event)

Description copied from interface: DataSetListener

A node's coordinates were modified.

Specified by:

nodeMoved in interface DataSetListener

Parameters:

event - The event for the node that was moved.

wayNodesChanged

public void wayNodesChanged(WayNodesChangedEvent event)

Description copied from interface: DataSetListener

A way's node list was changed.

Specified by:

wayNodesChanged in interface DataSetListener

Parameters:

event - The event for the way that was modified.

relationMembersChanged

public void relationMembersChanged(RelationMembersChangedEvent event)

Description copied from interface: DataSetListener

A relation's members have changed.

Specified by:

relationMembersChanged in interface DataSetListener

Parameters:

event - The event for the relation that was modified.

otherDatasetChange

public void otherDatasetChange(AbstractDatasetChangedEvent event)

Description copied from interface: DataSetListener

Minor dataset change, currently only changeset id changed is supported, but can be extended in future.

Specified by:

otherDatasetChange in interface DataSetListener

Parameters:

event - the event for data modification

dataChanged

public void dataChanged(DataChangedEvent event)

Description copied from interface: DataSetListener

Called after big changes in dataset. Usually other events are stopped using Dataset.beginUpdate() and after operation is completed (Dataset.endUpdate()), DataSetListener.dataChanged(DataChangedEvent event) is called.

Specified by:

dataChanged in interface DataSetListener

activeLayerChange

public void activeLayerChange(Layer oldLayer,
                              Layer newLayer)

Description copied from interface: MapView.LayerChangeListener

Notifies this listener that the active layer has changed.

Specified by:

activeLayerChange in interface MapView.LayerChangeListener

Parameters:

oldLayer - The previous active layer

newLayer - The new activer layer

layerAdded

public void layerAdded(Layer newLayer)

Description copied from interface: MapView.LayerChangeListener

Notifies this listener that a layer has been added.

Specified by:

layerAdded in interface MapView.LayerChangeListener

Parameters:

newLayer - The new added layer

layerRemoved

public void layerRemoved(Layer oldLayer)

Description copied from interface: MapView.LayerChangeListener

Notifies this listener that a layer has been removed.

Specified by:

layerRemoved in interface MapView.LayerChangeListener

Parameters:

oldLayer - The old removed layer

projectionChanged

public void projectionChanged(Projection oldValue,
                              Projection newValue)

Specified by:

projectionChanged in interface ProjectionChangeListener

selectionChanged

public void selectionChanged(java.util.Collection<? extends OsmPrimitive> newSelection)

Description copied from interface: SelectionChangedListener

Informs the listener that the selection in the dataset has changed.

Specified by:

selectionChanged in interface SelectionChangedListener

Parameters:

newSelection - The new selection.