/*
* TV-Browser
* Copyright (C) 04-2003 Martin Oberhauser (darras@users.sourceforge.net)
*
* 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.
*
* CVS information:
* $RCSfile$
* $Source$
* $Date: 2011-03-26 17:33:19 +0100 (Sat, 26 Mar 2011) $
* $Author: bananeweizen $
* $Revision: 6970 $
*/
package util.ui;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSource;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.DefaultListSelectionModel;
import javax.swing.JList;
import javax.swing.SwingUtilities;
import javax.swing.ToolTipManager;
/**
* This class implements a MouseListener for DnD in JLists.
*
* @author René Mach
*
*/
public class DragAndDropMouseListener extends MouseAdapter {
private int mLastSelectedIndex = 0;
private JList mSource, mTarget;
private ListDropAction mAction;
private DragGestureListener mListener;
/**
*
* @param source
* The source list of DnD.
* @param target
* The target list of DnD.
* @param action
* The action of DnD.
* @param listener
* The GestureListener of DnD.
*/
public DragAndDropMouseListener(JList source, JList target,
ListDropAction action, DragGestureListener listener) {
mSource = source;
mTarget = target;
mAction = action;
mListener = listener;
restore();
}
/**
* Rebuilds the correct MouseListener behavior.
*/
public void restore() {
MouseListener[] listeners = mSource.getMouseListeners();
for (int i = 0; i < listeners.length; i++) {
if(!(listeners[i] instanceof ToolTipManager)) {
mSource.removeMouseListener(listeners[i]);
}
}
MouseMotionListener[] mlisteners = mSource.getMouseMotionListeners();
for (int i = 0; i < mlisteners.length; i++) {
if(!(mlisteners[i] instanceof ToolTipManager)) {
mSource.removeMouseMotionListener(mlisteners[i]);
}
}
(new DragSource()).createDefaultDragGestureRecognizer(mSource,
DnDConstants.ACTION_MOVE, mListener);
mSource.addMouseListener(this);
}
public void mouseClicked(MouseEvent e) {
if (mSource.isEnabled() && !mSource.hasFocus()) {
mSource.requestFocusInWindow();
}
if (mSource.isEnabled() && SwingUtilities.isLeftMouseButton(e)
&& e.getClickCount() == 2 && mSource != mTarget) {
int index = mSource.locationToIndex(e.getPoint());
mSource.setSelectedIndex(index);
mAction.drop(mSource, mTarget, 0, true);
mLastSelectedIndex = index;
}
}
// Rebuild the selection of the JList with the needed
// functions.
public void mousePressed(MouseEvent e) {
if (mSource.isEnabled()) {
if (e.isShiftDown() && SwingUtilities.isLeftMouseButton(e)) {
int index = mSource.locationToIndex(e.getPoint());
mSource.setSelectionInterval(index, mLastSelectedIndex);
} else if (!e.isControlDown() && !e.isShiftDown()
&& SwingUtilities.isLeftMouseButton(e)) {
DefaultListSelectionModel model = (DefaultListSelectionModel) mSource
.getSelectionModel();
int index = mSource.locationToIndex(e.getPoint());
if (!model.isSelectedIndex(index)) {
mSource.setSelectedIndex(index);
mLastSelectedIndex = index;
}
}
}
}
// Rebuild the selection of the JList with the needed
// functions.
public void mouseReleased(MouseEvent e) {
int index = mSource.locationToIndex(e.getPoint());
if (mSource.isEnabled()) {
if (e.isControlDown() && SwingUtilities.isLeftMouseButton(e)) {
DefaultListSelectionModel model = (DefaultListSelectionModel) mSource
.getSelectionModel();
if (model.isSelectedIndex(index)) {
model.removeSelectionInterval(index, index);
} else {
model.addSelectionInterval(index, index);
}
mLastSelectedIndex = index;
} else if (!e.isShiftDown() && !e.isControlDown()
&& SwingUtilities.isLeftMouseButton(e)) {
mSource.setSelectedIndex(index);
mLastSelectedIndex = index;
}
}
}
}