org.jdesktop.swingx.rollover.ListRolloverController Maven / Gradle / Ivy
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/*
* $Id: ListRolloverController.java 3707 2010-07-08 19:19:25Z kschaefe $
*
* 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.JList;
import javax.swing.ListCellRenderer;
/**
* listens to rollover properties. Repaints effected component regions.
* Updates link cursor.
*
* @author Jeanette Winzenburg
*/
public class ListRolloverController extends RolloverController {
private Cursor oldCursor;
// --------------------------------- JList rollover
@Override
protected void rollover(Point oldLocation, Point newLocation) {
// PENDING JW - track down the -1 in location.y
if (oldLocation != null) {
Rectangle r = component.getCellBounds(oldLocation.y, oldLocation.y);
// LOG.info("old index/cellbounds: " + index + "/" + r);
if (r != null) {
component.repaint(r);
}
}
if (newLocation != null) {
Rectangle r = component.getCellBounds(newLocation.y, newLocation.y);
// LOG.info("new index/cellbounds: " + index + "/" + r);
if (r != null) {
component.repaint(r);
}
}
setRolloverCursor(newLocation);
}
/**
* something weird: cursor in JList behaves different from JTable?
* Hmm .. no: using the table code snippets seems to fix #503-swingx
* @param location
*/
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;
}
}
// if (hasRollover(location)) {
// oldCursor = component.getCursor();
// component.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
// } else {
// component.setCursor(oldCursor);
// oldCursor = null;
// }
}
@Override
protected RolloverRenderer getRolloverRenderer(Point location,
boolean prepare) {
ListCellRenderer renderer = component.getCellRenderer();
RolloverRenderer rollover = renderer instanceof RolloverRenderer
? (RolloverRenderer) renderer : null;
if ((rollover != null) && !rollover.isEnabled()) {
rollover = null;
}
if ((rollover != null) && prepare) {
Object element = component.getModel().getElementAt(location.y);
renderer.getListCellRendererComponent(component, element,
location.y, false, true);
}
return rollover;
}
@Override
protected Point getFocusedCell() {
int leadRow = component.getLeadSelectionIndex();
if (leadRow < 0)
return null;
return new Point(0, leadRow);
}
}