/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2004, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.tools.edit.activator;
import java.awt.Color;
import org.locationtech.udig.core.IProvider;
import org.locationtech.udig.project.BlackboardEvent;
import org.locationtech.udig.project.IBlackboard;
import org.locationtech.udig.project.IBlackboardListener;
import org.locationtech.udig.project.ui.render.displayAdapter.MapMouseEvent;
import org.locationtech.udig.project.ui.render.displayAdapter.MapMouseMotionListener;
import org.locationtech.udig.project.ui.render.displayAdapter.ViewportPane;
import org.locationtech.udig.tools.edit.Activator;
import org.locationtech.udig.tools.edit.EditPlugin;
import org.locationtech.udig.tools.edit.EditState;
import org.locationtech.udig.tools.edit.EditToolHandler;
import org.locationtech.udig.tools.edit.commands.DrawEditGeomsCommand;
import org.locationtech.udig.tools.edit.commands.StyleStrategy;
import org.locationtech.udig.tools.edit.preferences.PreferenceUtil;
import org.locationtech.udig.tools.edit.support.Point;
import org.locationtech.udig.tools.edit.support.PrimitiveShape;
/**
*
* Adds a DrawGeomsCommand to the draw commands and invalidates it at the end.
*
* @author jones
* @since 1.1.0
*/
public class DrawGeomsActivator implements Activator {
protected DrawEditGeomsCommand command;
private DrawType type;
private boolean showMouseLocation = true;
private MapMouseMotionListener listener;
protected ViewportPane pane;
protected EditToolHandler handler;
private IBlackboardListener mapBBListener;
/**
* Returns true if the mouse position will be shown. Default is true.
*
* @return Returns true if the mouse position will be shown. Default is true.
*/
public boolean isShowMouseLocation() {
return this.showMouseLocation;
}
/**
* @param showMouseLocation The showMouseLocation to set.
*/
public void setShowMouseLocation( boolean showMouseLocation ) {
this.showMouseLocation = showMouseLocation;
}
/**
*
* @param type
*/
public DrawGeomsActivator( DrawType type ) {
this.type = type;
}
public void activate( final EditToolHandler handler ) {
this.handler = handler;
command = new DrawEditGeomsCommand(handler);
StyleStrategy colorizationStrategy = command.getColorizationStrategy();
colorizationStrategy.setFill(new IProvider<Color>(){
public Color get( Object... params ) {
return PreferenceUtil.instance().getDrawGeomsFill();
}
});
colorizationStrategy.setLine(new IProvider<Color>(){
public Color get( Object... params ) {
return PreferenceUtil.instance().getDrawGeomsLine();
}
});
pane = handler.getContext().getViewportPane();
addMouseListener();
handler.getContext().getViewportPane().addDrawCommand(command);
}
private void removeMouseListener() {
if (pane != null && listener != null)
pane.removeMouseMotionListener(listener);
listener = null;
handler.getContext().getMap().getBlackboard().removeListener(mapBBListener);
}
protected void addMouseListener() {
listener = new MapMouseMotionListener(){
public void mouseMoved( MapMouseEvent event ) {
if (type == DrawType.POINT || !showMouseLocation)
return;
if (listener != this) {
((ViewportPane) event.source).removeMouseMotionListener(this);
}
boolean change = false;
if (handler.getCurrentState() == EditState.CREATING)
change = command.setCurrentLocation(Point.valueOf(event.x, event.y), handler
.getCurrentShape());
else
change = command.setCurrentLocation(null, null);
if (change)
handler.repaint();
}
public void mouseDragged( MapMouseEvent event ) {
mouseMoved(event);
}
public void mouseHovered( MapMouseEvent event ) {
}
};
pane.addMouseMotionListener(listener);
mapBBListener = new IBlackboardListener(){
public void blackBoardCleared( IBlackboard source ) {
if (mapBBListener != this) {
source.removeListener(this);
}
command.setCurrentLocation(null, null);
}
public void blackBoardChanged( BlackboardEvent event ) {
if (mapBBListener != this) {
event.getSource().removeListener(this);
}
if (EditToolHandler.CURRENT_SHAPE.equals(event.getKey())) {
command.setCurrentLocation(null, (PrimitiveShape) event.getNewValue());
}
}
};
handler.getContext().getMap().getBlackboard().addListener(mapBBListener);
}
public void deactivate( EditToolHandler handler ) {
if (command != null)
command.setValid(false);
mapBBListener = null;
listener = null;
removeMouseListener();
}
public void handleActivateError( EditToolHandler handler, Throwable error ) {
EditPlugin.log("Error creating and sending command", error); //$NON-NLS-1$
}
public void handleDeactivateError( EditToolHandler handler, Throwable error ) {
EditPlugin.log("Error invalidating command", error); //$NON-NLS-1$
}
public enum DrawType {
POLYGON, LINE, POINT
}
}