/*
* Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.java.swing.plaf.motif;
import sun.swing.SwingUtilities2;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicPopupMenuUI;
/**
* A Motif L&F implementation of PopupMenuUI.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is appropriate
* for short term storage or RMI between applications running the same
* version of Swing. A future release of Swing will provide support for
* long term persistence.
*
* @author Georges Saab
* @author Rich Schiavi
*/
public class MotifPopupMenuUI extends BasicPopupMenuUI {
private static Border border = null;
private Font titleFont = null;
public static ComponentUI createUI(JComponent x) {
return new MotifPopupMenuUI();
}
/* This has to deal with the fact that the title may be wider than
the widest child component.
*/
public Dimension getPreferredSize(JComponent c) {
LayoutManager layout = c.getLayout();
Dimension d = layout.preferredLayoutSize(c);
String title = ((JPopupMenu)c).getLabel();
if (titleFont == null) {
UIDefaults table = UIManager.getLookAndFeelDefaults();
titleFont = table.getFont("PopupMenu.font");
}
FontMetrics fm = c.getFontMetrics(titleFont);
int stringWidth = 0;
if (title!=null) {
stringWidth += SwingUtilities2.stringWidth(c, fm, title);
}
if (d.width < stringWidth) {
d.width = stringWidth + 8;
Insets i = c.getInsets();
if (i!=null) {
d.width += i.left + i.right;
}
if (border != null) {
i = border.getBorderInsets(c);
d.width += i.left + i.right;
}
return d;
}
return null;
}
protected ChangeListener createChangeListener(JPopupMenu m) {
return new ChangeListener() {
public void stateChanged(ChangeEvent e) {}
};
}
public boolean isPopupTrigger(MouseEvent e) {
return ((e.getID()==MouseEvent.MOUSE_PRESSED)
&& ((e.getModifiers() & MouseEvent.BUTTON3_MASK)!=0));
}
}