1 /*
   2  * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.java.swing.plaf.motif;
  27 
  28 import javax.swing.*;
  29 import javax.swing.plaf.basic.BasicOptionPaneUI;
  30 import javax.swing.plaf.ComponentUI;
  31 import java.awt.Color;
  32 import java.awt.Component;
  33 import java.awt.Container;
  34 import java.awt.Dimension;
  35 import java.awt.Graphics;
  36 import java.awt.Insets;
  37 import java.awt.Rectangle;
  38 
  39 /**
  40  * Provides the CDE/Motif look and feel for a JOptionPane.
  41  * <p>
  42  * <strong>Warning:</strong>
  43  * Serialized objects of this class will not be compatible with
  44  * future Swing releases.  The current serialization support is appropriate
  45  * for short term storage or RMI between applications running the same
  46  * version of Swing.  A future release of Swing will provide support for
  47  * long term persistence.
  48  *
  49  * @author Scott Violet
  50  */
  51 public class MotifOptionPaneUI extends BasicOptionPaneUI
  52 {
  53     /**
  54       * Creates a new MotifOptionPaneUI instance.
  55       */
  56     public static ComponentUI createUI(JComponent x) {
  57         return new MotifOptionPaneUI();
  58     }
  59 
  60     /**
  61      * Creates and returns a Container containin the buttons. The buttons
  62      * are created by calling <code>getButtons</code>.
  63      */
  64     protected Container createButtonArea() {
  65         Container          b = super.createButtonArea();
  66 
  67         if(b != null && b.getLayout() instanceof ButtonAreaLayout) {
  68             ((ButtonAreaLayout)b.getLayout()).setCentersChildren(false);
  69         }
  70         return b;
  71     }
  72 
  73     /**
  74      * Returns null, CDE/Motif does not impose a minimum size.
  75      */
  76     public Dimension getMinimumOptionPaneSize() {
  77         return null;
  78     }
  79 
  80     protected Container createSeparator() {
  81         return new JPanel() {
  82 
  83             public Dimension getPreferredSize() {
  84                 return new Dimension(10, 2);
  85             }
  86 
  87             public void paint(Graphics g) {
  88                 int width = getWidth();
  89                 g.setColor(Color.darkGray);
  90                 g.drawLine(0, 0, width, 0);
  91                 g.setColor(Color.white);
  92                 g.drawLine(0, 1, width, 1);
  93             }
  94         };
  95     }
  96 
  97     /**
  98      * Creates and adds a JLabel representing the icon returned from
  99      * <code>getIcon</code> to <code>top</code>. This is messaged from
 100      * <code>createMessageArea</code>
 101      */
 102     protected void addIcon(Container top) {
 103         /* Create the icon. */
 104         Icon                  sideIcon = getIcon();
 105 
 106         if (sideIcon != null) {
 107             JLabel            iconLabel = new JLabel(sideIcon);
 108 
 109             iconLabel.setVerticalAlignment(SwingConstants.CENTER);
 110             top.add(iconLabel, "West");
 111         }
 112     }
 113 
 114 }