/*
* @(#)ConnectionTool.java
*
* Project: JHotdraw - a GUI framework for technical drawings
* http://www.jhotdraw.org
* http://jhotdraw.sourceforge.net
* Copyright: � by the original author(s) and all contributors
* License: Lesser GNU Public License (LGPL)
* http://www.opensource.org/licenses/lgpl-license.html
*/
package org.jhotdraw.contrib;
import org.jhotdraw.standard.ConnectionTool;
import org.jhotdraw.standard.SingleFigureEnumerator;
import org.jhotdraw.framework.*;
import org.jhotdraw.figures.*;
import java.awt.event.MouseEvent;
import java.awt.*;
/**
* @author Wolfram Kaiser <mrfloppy@sourceforge.net>
* @version <$CURRENT_VERSION$>
*/
public class SplitConnectionTool extends ConnectionTool {
public SplitConnectionTool(DrawingEditor newDrawingEditor, ConnectionFigure newPrototype) {
super(newDrawingEditor, newPrototype);
}
public void mouseDown(MouseEvent e, int x, int y) {
setView((DrawingView)e.getSource());
int ex = e.getX();
int ey = e.getY();
if (getTargetFigure() == null) {
setTargetFigure(findConnectableFigure(ex, ey, drawing()));
}
else {
if (getAddedFigure() == null) {
setConnection(createConnection());
setStartConnector(findConnector(ex, ey, getTargetFigure()));
getConnection().connectStart(getStartConnector());
getConnection().startPoint(ex, ey);
setAddedFigure(view().add(getConnection()));
}
Figure c = findTarget(ex, ey, drawing());
if (c != null) {
// end connection figure found
setEndConnector(findConnector(ex, ex, c));
getConnection().connectEnd(getEndConnector());
getConnection().endPoint(ex, ey);
setUndoActivity(createUndoActivity());
getUndoActivity().setAffectedFigures(
new SingleFigureEnumerator(getAddedFigure()));
getConnection().updateConnection();
init();
editor().toolDone();
}
else {
// split connection where the mouse click took place
if (getEndConnector() == null) {
Figure tempEndFigure = new NullFigure();
tempEndFigure.basicDisplayBox(new Point(ex, ey), new Point(ex, ey));
setEndConnector(new NullConnector(tempEndFigure));
getConnection().connectEnd(getEndConnector());
getConnection().endPoint(ex, ey);
getConnection().updateConnection();
}
else {
((PolyLineFigure)getConnection()).addPoint(ex, ey);
}
}
}
}
public void mouseUp(MouseEvent e, int x, int y) {
// usually do nothing: tool is still active
if (e.getClickCount() == 2) {
init();
editor().toolDone();
}
}
public void mouseMove(MouseEvent e, int x, int y) {
// avoid tracking connectors
}
public void mouseDrag(MouseEvent e, int x, int y) {
// avoid tracking connectors
}
public void deactivate() {
if (getConnection() != null) {
view().remove(getConnection());
}
super.deactivate();
init();
}
protected void init() {
setConnection(null);
setStartConnector(null);
setEndConnector(null);
setAddedFigure(null);
setTargetFigure(null);
}
}