Package com.bc.ceres.glayer.support

Class AbstractLayerListener

java.lang.Object

com.bc.ceres.glayer.support.AbstractLayerListener

All Implemented Interfaces:

LayerListener

Direct Known Subclasses:

LayerViewInvalidationListener

public abstract class AbstractLayerListener
extends Object
implements LayerListener

An (empty) LayerListener implementation.

Version:

$revision$ $date$

Constructor Summary

Constructors

Constructor	Description
AbstractLayerListener()

Method Summary

Modifier and Type	Method	Description
void	handleLayerDataChanged(Layer layer, Rectangle2D modelRegion)	Called if the data of the given layer has changed.
void	handleLayerPropertyChanged(Layer layer, PropertyChangeEvent event)	Called if a property of the given layer has changed.
void	handleLayersAdded(Layer parentLayer, Layer[] childLayers)	Called if a new layer has been added to a collection layer.
void	handleLayersRemoved(Layer parentLayer, Layer[] childLayers)	Called if an existing layer has been removed from a collection layer.
protected boolean	isVisibleChangeEvent(PropertyChangeEvent propertyChangeEvent)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractLayerListener

public AbstractLayerListener()

Method Detail

handleLayerPropertyChanged

public void handleLayerPropertyChanged(Layer layer,
                                       PropertyChangeEvent event)

Called if a property of the given layer has changed. The source of the property change event may be either the layer itself or its configuration (see Layer.getConfiguration()).

Specified by:

handleLayerPropertyChanged in interface LayerListener

Parameters:

layer - The layer which triggered the change.

event - The layer property change event.

handleLayerDataChanged

public void handleLayerDataChanged(Layer layer,
                                   Rectangle2D modelRegion)

Called if the data of the given layer has changed.

Specified by:

handleLayerDataChanged in interface LayerListener

Parameters:

layer - The layer which triggered the change.

modelRegion - The region in model coordinates which are affected by the change. May be null, if not available.

handleLayersAdded

public void handleLayersAdded(Layer parentLayer,
                              Layer[] childLayers)

Called if a new layer has been added to a collection layer.

Specified by:

handleLayersAdded in interface LayerListener

Parameters:

parentLayer - The parent layer which triggered the change.

childLayers - The child layers added.

handleLayersRemoved

public void handleLayersRemoved(Layer parentLayer,
                                Layer[] childLayers)

Called if an existing layer has been removed from a collection layer.

Specified by:

handleLayersRemoved in interface LayerListener

Parameters:

parentLayer - The parent layer which triggered the change.

childLayers - The child layers removed.

isVisibleChangeEvent

protected boolean isVisibleChangeEvent(PropertyChangeEvent propertyChangeEvent)

Parameters:

propertyChangeEvent - A property change event fired by a Layer.

Returns:

true if the change event is visible, e.g. causes (re)rendering of some kind of view