001    /* MetalComboBoxEditor.java
002       Copyright (C) 2005 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    
039    package javax.swing.plaf.metal;
040    
041    import java.awt.Component;
042    import java.awt.Dimension;
043    import java.awt.Graphics;
044    import java.awt.Insets;
045    
046    import javax.swing.JTextField;
047    import javax.swing.border.AbstractBorder;
048    import javax.swing.plaf.basic.BasicComboBoxEditor;
049    import javax.swing.plaf.metal.MetalLookAndFeel;
050    
051    /**
052     * An editor used by the {@link MetalComboBoxUI} class.
053     */
054    public 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    }