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/*
* $Id: TreeRolloverController.java 3100 2008-10-14 22:33:10Z rah003 $
*
* Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.rollover;
import java.awt.Cursor;
import java.awt.Point;
import java.awt.Rectangle;
import javax.swing.JTree;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreePath;
/**
* listens to rollover properties.
* Repaints effected component regions.
* Updates link cursor.
*
* @author Jeanette Winzenburg
*/
public class TreeRolloverController extends RolloverController {
private Cursor oldCursor;
// -------------------------------------JTree rollover
@Override
protected void rollover(Point oldLocation, Point newLocation) {
// JW: conditional repaint not working?
// component.repaint();
if (oldLocation != null) {
Rectangle r = component.getRowBounds(oldLocation.y);
if (r != null) {
r.x = 0;
r.width = component.getWidth();
component.repaint(r);
}
}
if (newLocation != null) {
Rectangle r = component.getRowBounds(newLocation.y);
if (r != null) {
r.x = 0;
r.width = component.getWidth();
component.repaint(r);
}
}
setRolloverCursor(newLocation);
}
private void setRolloverCursor(Point location) {
if (hasRollover(location)) {
if (oldCursor == null) {
oldCursor = component.getCursor();
component.setCursor(Cursor
.getPredefinedCursor(Cursor.HAND_CURSOR));
}
} else {
if (oldCursor != null) {
component.setCursor(oldCursor);
oldCursor = null;
}
}
}
@Override
protected RolloverRenderer getRolloverRenderer(Point location, boolean prepare) {
TreeCellRenderer renderer = component.getCellRenderer();
RolloverRenderer rollover = renderer instanceof RolloverRenderer
? (RolloverRenderer) renderer : null;
if ((rollover != null) && !rollover.isEnabled()) {
rollover = null;
}
if ((rollover != null) && prepare) {
TreePath path = component.getPathForRow(location.y);
Object element = path != null ? path.getLastPathComponent() : null;
renderer.getTreeCellRendererComponent(component, element, false,
false, false,
location.y, false);
}
return rollover;
}
@Override
protected Point getFocusedCell() {
// TODO Auto-generated method stub
return null;
}
}