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From-SVN: r102074

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diff --git a/libjava/classpath/javax/swing/Box.java b/libjava/classpath/javax/swing/Box.java
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+/* Box.java --
+   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing;
+
+import java.awt.AWTError;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.LayoutManager;
+
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+
+/**
+ * A component that uses a {@link BoxLayout} as Layout Manager.
+ *
+ * In addition to that, this class provides a set of static methods for
+ * creating some filler components ('struts' and 'glue') for use in
+ * containers that are laid out using BoxLayout.
+ *
+ * @author Ronald Veldema (rveldema@cs.vu.nl)
+ */
+public class Box extends JComponent implements Accessible
+{
+  private static final long serialVersionUID = 1525417495883046342L;
+  
+  // FIXME: disable to make libjava compile; visibility rules are broken
+  protected class AccessibleBox // extends Container.AccessibleAWTContainer
+  {
+    private static final long serialVersionUID = -7775079816389931944L;
+  
+    protected AccessibleBox()
+    {
+    }
+    
+    public AccessibleRole getAccessibleRole()
+    {
+      return null;
+    }
+  }
+
+  /**
+   * A component that servers as a filler in BoxLayout controlled containers.
+   */
+  public static class Filler extends JComponent implements Accessible
+  {
+    private static final long serialVersionUID = -1204263191910183998L;
+  
+    // FIXME: disable to make libjava compile; visibility rules are broken
+    protected class AccessibleBoxFiller // extends Component.AccessibleAWTComponent
+    {
+      private static final long serialVersionUID = 164963348357479321L;
+      
+      protected AccessibleBoxFiller()
+      {
+      }
+      
+      public AccessibleRole getAccessibleRole()
+      {
+        return null;
+      }
+    }
+    
+    protected AccessibleContext accessibleContext;
+    
+    private transient Dimension min, pref, max;
+    
+    /**
+     * Creates a new instance of Filler.
+     *
+     * @param min the minimum size of the filler.
+     * @param pref the preferred size of the filler.
+     * @param max the maximum size of the filler.
+     */
+    public Filler(Dimension min, Dimension pref, Dimension max)
+    {
+      changeShape(min, pref, max);
+    }
+    
+    /**
+     * Changes the dimensions of this Filler.
+     *
+     * @param min the new minimum size of the filler.
+     * @param pref the new preferred size of the filler.
+     * @param max the new maximum size of the filler.
+     */
+    public void changeShape(Dimension min, Dimension pref, Dimension max)
+    {
+      this.min = min;
+      this.pref = pref;
+      this.max = max;    
+    }
+    
+    public AccessibleContext getAccessibleContext()
+    {
+      // FIXME: disable to make libjava compile; visibility rules are broken      
+      //      if (accessibleContext == null)
+      //        accessibleContext = new AccessibleBoxFiller();
+      return accessibleContext;
+    }
+    
+    /**
+     * Returns the maximum size of this Filler.
+     *
+     * @return the maximum size of this Filler.
+     */
+    public Dimension getMaximumSize()
+    {
+      return max;
+    }
+    
+    /**
+     * Returns the minimum size of this Filler.
+     *
+     * @return the minimum size of this Filler.
+     */
+    public Dimension getMinimumSize()
+    {
+      return min;
+    }
+    
+    /**
+     * Returns the preferred size of this Filler.
+     *
+     * @return the preferred size of this Filler.
+     */
+    public Dimension getPreferredSize()
+    {
+      return pref;
+    }
+  }
+  
+  /**
+   * Creates a new Box component, that lays out its children according
+   * to the <code>axis</code> parameter.
+   *
+   * @param axis the orientation of the BoxLayout.
+   *
+   * @see BoxLayout#X_AXIS
+   * @see BoxLayout#Y_AXIS
+   * @see BoxLayout#LINE_AXIS
+   * @see BoxLayout#PAGE_AXIS
+   */
+  public Box(int axis)
+  {
+    super.setLayout(new BoxLayout(this, axis));	
+  }
+  
+  /**
+   * Creates a filler component which acts as glue between components.
+   * It does not take space unless some extra space is available. If extra
+   * space is available, this component can expand in both X and Y directions.
+   *
+   * @return a glue-like filler component.
+   */
+  public static Component createGlue()
+  {
+    Filler glue = new Filler(new Dimension(0,0), new Dimension(0,0),
+                             new Dimension(Short.MAX_VALUE,Short.MAX_VALUE)
+                             );
+    return glue;
+  }
+  
+  public static Box createHorizontalBox()
+  {
+    return new Box(BoxLayout.X_AXIS);
+  }
+  
+  /**
+   * Creates a filler component which acts as glue between components.
+   * It does not take space unless some extra space is available. If extra
+   * space is available, this component can expand in the X direction.
+   *
+   * @return a glue-like filler component.
+   */
+  public static Component createHorizontalGlue()
+  {
+    Filler glue = new Filler(new Dimension(0,0), new Dimension(0,0),
+                             new Dimension(Short.MAX_VALUE, 0)
+                             );
+    return glue;
+  }
+  
+  /**
+   * Creates a filler component which acts as strut between components.
+   * It will fill exactly the specified horizontal size.
+   *
+   * @param width the width of this strut in pixels.
+   *
+   * @return a strut-like filler component.
+   */
+  public static Component createHorizontalStrut(int width)
+  {
+    Filler strut = new Filler(new Dimension(width, 0),
+                              new Dimension(width, 0),
+                              new Dimension(width, Integer.MAX_VALUE));
+    return strut;
+  }
+  
+  public static Component createRigidArea(Dimension d)
+  {
+    return new Filler(d, d, d);
+  }
+  
+  public static Box createVerticalBox()
+  {
+    return new Box(BoxLayout.Y_AXIS);
+  }
+  
+  /**
+   * Creates a filler component which acts as glue between components.
+   * It does not take space unless some extra space is available. If extra
+   * space is available, this component can expand in the Y direction.
+   *
+   * @return a glue-like filler component.
+   */
+  public static Component createVerticalGlue()
+  {
+    return createGlue();
+  }
+  
+  /**
+   * Creates a filler component which acts as strut between components.
+   * It will fill exactly the specified vertical size.
+   *
+   * @param height the height of this strut in pixels.
+   *
+   * @return a strut-like filler component.
+   */
+  public static Component createVerticalStrut(int height)
+  {
+    Filler strut = new Filler(new Dimension(0, height),
+                              new Dimension(0, height),
+                              new Dimension(Integer.MAX_VALUE, height));
+    return strut;
+  }
+  
+  public void setLayout(LayoutManager l)
+  {
+    throw new AWTError("Not allowed to set layout managers for boxes.");
+  }
+  
+  public AccessibleContext getAccessibleContext()
+  {
+    //     if (accessibleContext == null)
+    //       accessibleContext = new AccessibleBox();
+    return accessibleContext;
+  }
+  
+  
+}