/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.swing.event;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.util.ArrayList;
import java.util.List;
import org.geotools.swing.MapPane;
/**
* Receives mouse events from a MapPane instance, converts them to
* MapPaneMouseEvents, and sends these to the active map pane
* tools.
*
* @author Michael Bedward
* @since 8.0
*
* @source $URL$
* @version $Id$
*/
public class DefaultMapMouseEventDispatcher implements MapMouseEventDispatcher {
private MapPane mapPane;
private List<MapMouseListener> listeners;
/**
* Creates a new manager instance to work with the specified map pane.
*
* @param mapPane the map pane
*/
public DefaultMapMouseEventDispatcher(MapPane mapPane) {
this.mapPane = mapPane;
this.listeners = new ArrayList<MapMouseListener>();
}
/**
* {@inheritDoc}
*/
@Override
public boolean addMouseListener(MapMouseListener listener) {
if (listener == null) {
throw new IllegalArgumentException("listener must not be null");
}
if (!listeners.contains(listener)) {
return listeners.add(listener);
} else {
return false;
}
}
/**
* {@inheritDoc}
*/
@Override
public boolean removeMouseListener(MapMouseListener listener) {
if (listener == null) {
throw new IllegalArgumentException("listener must not be null");
}
return listeners.remove(listener);
}
/**
* {@inheritDoc}
*/
@Override
public void removeAllListeners() {
listeners.clear();
}
/**
* Receives a mouse clicked event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseClicked(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseClicked(mapEv);
}
}
}
/**
* Receives a mouse pressed event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mousePressed(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMousePressed(mapEv);
}
}
}
/**
* Receives a mouse released event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseReleased(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseReleased(mapEv);
}
}
}
/**
* Receives a mouse entered event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseEntered(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseEntered(mapEv);
}
}
}
/**
* Receives a mouse exited event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseExited(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseExited(mapEv);
}
}
}
/**
* Receives a mouse dragged event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseDragged(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseDragged(mapEv);
}
}
}
/**
* Receives a mouse moved event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseMoved(MouseEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseMoved(mapEv);
}
}
}
/**
* Receives a mouse wheel event and sends a derived {@linkplain MapMouseEvent}
* to listeners.
*
* @param ev the input event
*/
@Override
public void mouseWheelMoved(MouseWheelEvent ev) {
MapMouseEvent mapEv = convertEvent(ev);
if (mapEv != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseWheelMoved(mapEv);
}
}
}
/**
* {@inheritDoc}
*/
@Override
public MapMouseEvent convertEvent(MouseEvent ev) {
MapMouseEvent mapEv = null;
if (mapPane.getScreenToWorldTransform() != null) {
mapEv = new MapMouseEvent(mapPane, ev);
}
return mapEv;
}
/**
* {@inheritDoc}
*/
@Override
public MapMouseEvent convertEvent(MouseWheelEvent ev) {
MapMouseEvent mapEv = null;
if (mapPane.getScreenToWorldTransform() != null) {
mapEv = new MapMouseEvent(mapPane, ev);
}
return mapEv;
}
}