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/* GraphViewer.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* 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.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.help;
import be.ugent.caagt.swirl.dnd.LocalTransferHandler;
import java.awt.Dimension;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import javax.swing.JLabel;
import org.grinvin.gui.components.GraphComponent;
import org.grinvin.list.graphs.GraphListElement;
import org.grinvin.list.HasSelectableValues;
import org.grinvin.gui.dnd.SelectionDragHandler;
/**
* Component for displaying a graph in the {@link InlineGraphViewer}. The image can be dragged as a
* {@link GraphListElement }.
*/
public class GraphViewer extends GraphComponent implements MouseMotionListener, HasSelectableValues {
// shared transfer handler
private static final LocalTransferHandler TRANSFER_HANDLER;
static {
TRANSFER_HANDLER = new LocalTransferHandler();
TRANSFER_HANDLER.setDragHandler(new SelectionDragHandler(GraphListElement.class));
}
public GraphViewer(){
setPreferredSize(new Dimension(200, 200));
setMinimumSize(new Dimension(200, 200));
setVerticalTextPosition(JLabel.BOTTOM);
addMouseMotionListener(this);
setTransferHandler(TRANSFER_HANDLER);
}
public GraphListElement[] getSelectedValues () {
return new GraphListElement[] { getElement() };
}
/*============================================================
* DRAG SUPPORT
*============================================================*/
// implements MouseMotionListener
public void mouseDragged(MouseEvent e) {
// TODO: is this the way to initiate dragging?
//if (dragEnabled) {
TRANSFER_HANDLER.exportAsDrag(GraphViewer.this, e,
TRANSFER_HANDLER.COPY);
//}
}
// implements MouseMotionListener
public void mouseMoved(MouseEvent e) {
// do nothing
}
}
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