/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2003-2008, 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.tool;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import java.util.HashSet;
import java.util.ResourceBundle;
import java.util.Set;
import javax.swing.event.MouseInputListener;
import org.geotools.swing.JMapPane;
import org.geotools.swing.event.MapMouseEvent;
import org.geotools.swing.event.MapMouseListener;
/**
* Receives mouse events from a JMapPane instance, converts them to
* JMapPaneMouseEvents, and sends these to the active map pane
* tools.
*
* @author Michael Bedward
* @since 2.6
* @source $URL$
* @version $Id$
*/
public class MapToolManager implements MouseInputListener, MouseWheelListener {
private static final ResourceBundle stringRes = ResourceBundle.getBundle("org/geotools/swing/Text");
private JMapPane mapPane;
private Set<MapMouseListener> listeners = new HashSet<MapMouseListener>();
private CursorTool cursorTool;
/**
* Constructor
*
* @param pane the map pane that owns this listener
*/
public MapToolManager(JMapPane pane) {
this.mapPane = pane;
}
/**
* Unset the current cursor tool
*/
public void setNoCursorTool() {
listeners.remove(cursorTool);
cursorTool = null;
}
/**
* Set the active cursor tool
*
* @param tool the tool to set
* @return true if successful; false otherwise
* @throws IllegalArgumentException if the tool argument is null
*/
public boolean setCursorTool(CursorTool tool) {
if (tool == null) {
throw new IllegalArgumentException(stringRes.getString("arg_null_error"));
}
if (cursorTool != null) {
listeners.remove(cursorTool);
}
cursorTool = tool;
cursorTool.setMapPane(mapPane);
return listeners.add(tool);
}
/**
* Get the active cursor tool
*
* @return live reference to the active cursor tool or {@code null} if no
* tool is active
*/
public CursorTool getCursorTool() {
return cursorTool;
}
/**
* Add a listener for JMapPaneMouseEvents
*
* @param listener the listener to add
* @return true if successful; false otherwise
* @throws IllegalArgumentException if the tool argument is null
*/
public boolean addMouseListener(MapMouseListener listener) {
if (listener == null) {
throw new IllegalArgumentException(stringRes.getString("arg_null_error"));
}
return listeners.add(listener);
}
/**
* Remove a MapMouseListener from the active listeners
*
* @param listener the listener to remove
* @return true if successful; false otherwise
* @throws IllegalArgumentException if the tool argument is null
*/
public boolean removeMouseListener(MapMouseListener listener) {
if (listener == null) {
throw new IllegalArgumentException(stringRes.getString("arg_null_error"));
}
return listeners.remove(listener);
}
public void mouseClicked(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseClicked(ev);
}
}
}
public void mousePressed(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMousePressed(ev);
}
}
}
public void mouseReleased(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseReleased(ev);
}
}
}
public void mouseEntered(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseEntered(ev);
}
}
}
public void mouseExited(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseExited(ev);
}
}
}
public void mouseDragged(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseDragged(ev);
}
}
}
public void mouseMoved(MouseEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseMoved(ev);
}
}
}
public void mouseWheelMoved(MouseWheelEvent e) {
MapMouseEvent ev = convertEvent(e);
if (ev != null) {
for (MapMouseListener listener : listeners) {
listener.onMouseWheelMoved(ev);
}
}
}
private MapMouseEvent convertEvent(MouseEvent e) {
MapMouseEvent ev = null;
if (mapPane.getScreenToWorldTransform() != null) {
ev = new MapMouseEvent(mapPane, e);
}
return ev;
}
private MapMouseEvent convertEvent(MouseWheelEvent e) {
MapMouseEvent ev = null;
if (mapPane.getScreenToWorldTransform() != null) {
ev = new MapMouseEvent(mapPane, e);
}
return ev;
}
}