001/* MetalComboBoxEditor.java
002   Copyright (C) 2005 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package javax.swing.plaf.metal;
040
041import java.awt.Component;
042import java.awt.Dimension;
043import java.awt.Graphics;
044import java.awt.Insets;
045
046import javax.swing.JTextField;
047import javax.swing.border.AbstractBorder;
048import javax.swing.plaf.basic.BasicComboBoxEditor;
049import javax.swing.plaf.metal.MetalLookAndFeel;
050
051/**
052 * An editor used by the {@link MetalComboBoxUI} class.
053 */
054public class MetalComboBoxEditor extends BasicComboBoxEditor
055{
056  /**
057   * A border used for the {@link JTextField} component.
058   */
059  static class MetalComboBoxEditorBorder extends AbstractBorder
060  {
061    /**
062     * Creates a new border instance.
063     */
064    public MetalComboBoxEditorBorder()
065    {
066      // Nothing to do here.
067    }
068    
069    /**
070     * Paints the border for the specified component.
071     * 
072     * @param c  the component (ignored).
073     * @param g  the graphics device.
074     * @param x  the x-coordinate.
075     * @param y  the y-coordinate.
076     * @param w  the width.
077     * @param h  the height.
078     */
079    public void paintBorder(Component c, Graphics g, int x, int y, int w, 
080        int h)
081    {
082      g.translate(x, y);
083      if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme)
084        {
085          g.setColor(MetalLookAndFeel.getControlDarkShadow());
086          g.drawLine(0, 0, w - 1, 0);
087          g.drawLine(0, 0, 0, h - 1);
088          g.drawLine(0, h - 1, w - 1, h - 1);
089          g.setColor(MetalLookAndFeel.getControlShadow());
090          g.drawLine(1, 1, w - 2, 1);
091          g.drawLine(1, 1, 1, h - 2);
092          g.drawLine(1, h - 2, w - 1, h - 2);
093          g.drawLine(w - 1, 1, w - 1, h - 2);
094        }
095      else
096        {
097          g.setColor(MetalLookAndFeel.getControlDarkShadow());
098          g.drawLine(0, 0, w - 1, 0);
099          g.drawLine(0, 0, 0, h - 2);
100          g.drawLine(0, h - 2, w - 1, h - 2);
101          g.setColor(MetalLookAndFeel.getControlHighlight());
102          g.drawLine(1, 1, w - 1, 1);
103          g.drawLine(1, 1, 1, h - 1);
104          g.drawLine(1, h - 1, w - 1, h - 1);
105          g.setColor(MetalLookAndFeel.getControl());
106          g.drawLine(1, h - 2, 1, h - 2);
107        }
108      g.translate(-x, -y);
109    }
110
111    /**
112     * Measures the width of this border.
113     *
114     * @param c the component whose border is to be measured.
115     *
116     * @return an Insets object whose <code>left</code>, <code>right</code>,
117     *         <code>top</code> and <code>bottom</code> fields indicate the
118     *         width of the border at the respective edge, which is zero
119     *         for the default implementation provided by AbstractButton.
120     *
121     * @see #getBorderInsets(java.awt.Component, java.awt.Insets)
122     */
123    public Insets getBorderInsets(Component c)
124    {
125      return editorBorderInsets;
126    }    
127  }
128    
129  /**
130   * A subclass of {@link MetalComboBoxEditor} that implements the 
131   * {@link javax.swing.plaf.UIResource} interface.
132   */
133  public static class UIResource extends MetalComboBoxEditor
134    implements javax.swing.plaf.UIResource
135  {
136    /**
137     * Creates a new instance.
138     */
139    public UIResource()
140    {
141      // Nothing to do here.
142    }
143  }
144
145  /**
146   * A special textfield implementation for the MetalComboBoxEditor.
147   */
148  private class EditorTextField extends JTextField
149  {
150    EditorTextField(String s, int columns)
151    {
152      super(s, columns);
153    }
154
155    /**
156     * Tests seem to show that the textfield in MetalComboBoxEditors have
157     * a height + 4.
158     */
159    public Dimension getPreferredSize()
160    {
161      Dimension size = super.getPreferredSize();
162      size.height += 4;
163      return size;
164    }
165
166    /**
167     * Tests seem to show that the textfield in MetalComboBoxEditors have
168     * a height + 4.
169     */
170    public Dimension getMinimumSize()
171    {
172      Dimension size = super.getMinimumSize();
173      size.height += 4;
174      return size;
175    }
176  }
177
178  /** The editor's border insets. */
179  protected static Insets editorBorderInsets = new Insets(2, 2, 2, 0);
180  
181  /**
182   * Creates a new editor.
183   */
184  public MetalComboBoxEditor()
185  {
186    editor = new EditorTextField("", 9);
187    editor.setBorder(new MetalComboBoxEditorBorder());
188  }
189  
190}