/*
* The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
* for visualizing and manipulating spatial features with geometry and attributes.
*
* Copyright (C) 2003 Vivid Solutions
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* For more information, contact:
*
* Integrated Systems Analysts, Inc.
* 630C Anchors St., Suite 101
* Fort Walton Beach, Florida
* USA
*
* (850)862-7321
*/
package org.openjump.util.python.pythonexampleclasses;
import java.awt.event.MouseEvent;
import org.openjump.core.ui.plugin.edittoolbox.cursortools.ConstrainedMultiClickTool;
import com.vividsolutions.jts.geom.Coordinate;
/**
* Whereas a MultiClickTool looks for a double-click to end the gesture,
* an NClickTool looks for a certain number of points to end the gesture.
*/
public abstract class ConstrainedNClickTool extends ConstrainedMultiClickTool {
protected int n = 1; //number of clicks at which to finish the drawing
public ConstrainedNClickTool()
{
}
protected Coordinate getModelSource() {
return (Coordinate) getCoordinates().get(0);
}
protected Coordinate getModelDestination() {
return (Coordinate) getCoordinates().get(n-1);
}
protected boolean isFinishingRelease(MouseEvent e) {
//A double click will generate two events: one with click-count = 1,
//and one with click-count = n. We just want to finish the gesture
//once, so handle the click-count = 1 case, and ignore the others.
//[Jon Aquino]
return (((e.getClickCount() == 1) && shouldGestureFinish()) || super.isFinishingRelease(e));
}
private boolean shouldGestureFinish() {
return (getCoordinates().size() == n);
}
}