old-autovect-branch/libjava/classpath/javax/swing/plaf/multi/MultiMenuBarUI.java

   1 /* MultiMenuBarUI.java --
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package javax.swing.plaf.multi;
  39
  40 import java.awt.Dimension;
  41 import java.awt.Graphics;
  42 import java.util.Iterator;
  43 import java.util.Vector;
  44
  45 import javax.accessibility.Accessible;
  46 import javax.swing.JComponent;
  47 import javax.swing.LookAndFeel;
  48 import javax.swing.UIManager;
  49 import javax.swing.plaf.ComponentUI;
  50 import javax.swing.plaf.MenuBarUI;
  51
  52 /**
  53  * A UI delegate that that coordinates multiple {@link MenuBarUI}
  54  * instances, one from the primary look and feel, and one or more from the
  55  * auxiliary look and feel(s).
  56  *
  57  * @see UIManager#addAuxiliaryLookAndFeel(LookAndFeel)
  58  */
  59 public class MultiMenuBarUI extends MenuBarUI
  60 {
  61
  62   /** A list of references to the actual component UIs. */
  63   protected Vector uis;
  64
  65   /**
  66    * Creates a new <code>MultiMenuBarUI</code> instance.
  67    *
  68    * @see #createUI(JComponent)
  69    */
  70   public MultiMenuBarUI()
  71   {
  72     uis = new Vector();
  73   }
  74
  75   /**
  76    * Creates a delegate object for the specified component.  If any auxiliary
  77    * look and feels support this component, a <code>MultiMenuBarUI</code> is
  78    * returned, otherwise the UI from the default look and feel is returned.
  79    *
  80    * @param target  the component.
  81    *
  82    * @see MultiLookAndFeel#createUIs(ComponentUI, Vector, JComponent)
  83    */
  84   public static ComponentUI createUI(JComponent target)
  85   {
  86     MultiMenuBarUI mui = new MultiMenuBarUI();
  87     return MultiLookAndFeel.createUIs(mui, mui.uis, target);
  88   }
  89
  90   /**
  91    * Calls the {@link ComponentUI#installUI(JComponent)} method for all
  92    * the UI delegates managed by this <code>MultiMenuBarUI</code>.
  93    *
  94    * @param c  the component.
  95    */
  96   public void installUI(JComponent c)
  97   {
  98     Iterator iterator = uis.iterator();
  99     while (iterator.hasNext())
 100     {
 101       ComponentUI ui = (ComponentUI) iterator.next();
 102       ui.installUI(c);
 103     }
 104   }
 105
 106   /**
 107    * Calls the {@link ComponentUI#uninstallUI(JComponent)} method for all
 108    * the UI delegates managed by this <code>MultiMenuBarUI</code>.
 109    *
 110    * @param c  the component.
 111    */
 112   public void uninstallUI(JComponent c)
 113   {
 114     Iterator iterator = uis.iterator();
 115     while (iterator.hasNext())
 116     {
 117       ComponentUI ui = (ComponentUI) iterator.next();
 118       ui.uninstallUI(c);
 119     }
 120   }
 121
 122   /**
 123    * Returns an array containing the UI delegates managed by this
 124    * <code>MultiMenuBarUI</code>.  The first item in the array is always
 125    * the UI delegate from the installed default look and feel.
 126    *
 127    * @return An array of UI delegates.
 128    */
 129   public ComponentUI[] getUIs()
 130   {
 131     return MultiLookAndFeel.uisToArray(uis);
 132   }
 133
 134   /**
 135    * Calls the {@link ComponentUI#contains(JComponent, int, int)} method for all
 136    * the UI delegates managed by this <code>MultiMenuBarUI</code>,
 137    * returning the result for the UI delegate from the primary look and
 138    * feel.
 139    *
 140    * @param c  the component.
 141    * @param x  the x-coordinate.
 142    * @param y  the y-coordinate.
 143    *
 144    * @return <code>true</code> if the specified (x, y) coordinate falls within
 145    *         the bounds of the component as rendered by the UI delegate in the
 146    *         primary look and feel, and <code>false</code> otherwise.
 147    */
 148   public boolean contains(JComponent c, int x, int y)
 149   {
 150     boolean result = false;
 151     Iterator iterator = uis.iterator();
 152     // first UI delegate provides the return value
 153     if (iterator.hasNext())
 154       {
 155         ComponentUI ui = (ComponentUI) iterator.next();
 156         result = ui.contains(c, x, y);
 157       }
 158     // return values from auxiliary UI delegates are ignored
 159     while (iterator.hasNext())
 160       {
 161         ComponentUI ui = (ComponentUI) iterator.next();
 162         /* boolean ignored = */ ui.contains(c, x, y);
 163       }
 164     return result;
 165   }
 166
 167   /**
 168    * Calls the {@link ComponentUI#update(Graphics, JComponent)} method for all
 169    * the UI delegates managed by this <code>MultiMenuBarUI</code>.
 170    *
 171    * @param g  the graphics device.
 172    * @param c  the component.
 173    */
 174   public void update(Graphics g, JComponent c)
 175   {
 176     Iterator iterator = uis.iterator();
 177     while (iterator.hasNext())
 178     {
 179       ComponentUI ui = (ComponentUI) iterator.next();
 180       ui.update(g, c);
 181     }
 182   }
 183
 184   /**
 185    * Calls the <code>paint(Graphics, JComponent)</code> method for all the UI
 186    * delegates managed by this <code>MultiMenuBarUI</code>.
 187    *
 188    * @param g  the graphics device.
 189    * @param c  the component.
 190    */
 191   public void paint(Graphics g, JComponent c)
 192   {
 193     Iterator iterator = uis.iterator();
 194     while (iterator.hasNext())
 195     {
 196       ComponentUI ui = (ComponentUI) iterator.next();
 197       ui.paint(g, c);
 198     }
 199   }
 200
 201   /**
 202    * Calls the {@link ComponentUI#getPreferredSize(JComponent)} method for all
 203    * the UI delegates managed by this <code>MultiMenuBarUI</code>,
 204    * returning the preferred size for the UI delegate from the primary look and
 205    * feel.
 206    *
 207    * @param c  the component.
 208    *
 209    * @return The preferred size returned by the UI delegate from the primary
 210    *         look and feel.
 211    */
 212   public Dimension getPreferredSize(JComponent c)
 213   {
 214     Dimension result = null;
 215     Iterator iterator = uis.iterator();
 216     // first UI delegate provides the return value
 217     if (iterator.hasNext())
 218       {
 219         ComponentUI ui = (ComponentUI) iterator.next();
 220         result = ui.getPreferredSize(c);
 221       }
 222     // return values from auxiliary UI delegates are ignored
 223     while (iterator.hasNext())
 224       {
 225         ComponentUI ui = (ComponentUI) iterator.next();
 226         /* Dimension ignored = */ ui.getPreferredSize(c);
 227       }
 228     return result;
 229   }
 230
 231   /**
 232    * Calls the {@link ComponentUI#getMinimumSize(JComponent)} method for all
 233    * the UI delegates managed by this <code>MultiMenuBarUI</code>,
 234    * returning the minimum size for the UI delegate from the primary look and
 235    * feel.
 236    *
 237    * @param c  the component.
 238    *
 239    * @return The minimum size returned by the UI delegate from the primary
 240    *         look and feel.
 241    */
 242   public Dimension getMinimumSize(JComponent c)
 243   {
 244     Dimension result = null;
 245     Iterator iterator = uis.iterator();
 246     // first UI delegate provides the return value
 247     if (iterator.hasNext())
 248       {
 249         ComponentUI ui = (ComponentUI) iterator.next();
 250         result = ui.getMinimumSize(c);
 251       }
 252     // return values from auxiliary UI delegates are ignored
 253     while (iterator.hasNext())
 254       {
 255         ComponentUI ui = (ComponentUI) iterator.next();
 256         /* Dimension ignored = */ ui.getMinimumSize(c);
 257       }
 258     return result;
 259   }
 260
 261   /**
 262    * Calls the {@link ComponentUI#getMaximumSize(JComponent)} method for all
 263    * the UI delegates managed by this <code>MultiMenuBarUI</code>,
 264    * returning the maximum size for the UI delegate from the primary look and
 265    * feel.
 266    *
 267    * @param c  the component.
 268    *
 269    * @return The maximum size returned by the UI delegate from the primary
 270    *         look and feel.
 271    */
 272   public Dimension getMaximumSize(JComponent c)
 273   {
 274     Dimension result = null;
 275     Iterator iterator = uis.iterator();
 276     // first UI delegate provides the return value
 277     if (iterator.hasNext())
 278       {
 279         ComponentUI ui = (ComponentUI) iterator.next();
 280         result = ui.getMaximumSize(c);
 281       }
 282     // return values from auxiliary UI delegates are ignored
 283     while (iterator.hasNext())
 284       {
 285         ComponentUI ui = (ComponentUI) iterator.next();
 286         /* Dimension ignored = */ ui.getMaximumSize(c);
 287       }
 288     return result;
 289   }
 290
 291   /**
 292    * Calls the {@link ComponentUI#getAccessibleChildrenCount(JComponent)} method
 293    * for all the UI delegates managed by this <code>MultiMenuBarUI</code>,
 294    * returning the count for the UI delegate from the primary look and
 295    * feel.
 296    *
 297    * @param c  the component.
 298    *
 299    * @return The count returned by the UI delegate from the primary
 300    *         look and feel.
 301    */
 302   public int getAccessibleChildrenCount(JComponent c)
 303   {
 304     int result = 0;
 305     Iterator iterator = uis.iterator();
 306     // first UI delegate provides the return value
 307     if (iterator.hasNext())
 308       {
 309         ComponentUI ui = (ComponentUI) iterator.next();
 310         result = ui.getAccessibleChildrenCount(c);
 311       }
 312     // return values from auxiliary UI delegates are ignored
 313     while (iterator.hasNext())
 314       {
 315         ComponentUI ui = (ComponentUI) iterator.next();
 316         /* int ignored = */ ui.getAccessibleChildrenCount(c);
 317       }
 318     return result;
 319   }
 320
 321   /**
 322    * Calls the {@link ComponentUI#getAccessibleChild(JComponent, int)} method
 323    * for all the UI delegates managed by this <code>MultiMenuBarUI</code>,
 324    * returning the child for the UI delegate from the primary look and
 325    * feel.
 326    *
 327    * @param c  the component
 328    * @param i  the child index.
 329    *
 330    * @return The child returned by the UI delegate from the primary
 331    *         look and feel.
 332    */
 333   public Accessible getAccessibleChild(JComponent c, int i)
 334   {
 335     Accessible result = null;
 336     Iterator iterator = uis.iterator();
 337     // first UI delegate provides the return value
 338     if (iterator.hasNext())
 339       {
 340         ComponentUI ui = (ComponentUI) iterator.next();
 341         result = ui.getAccessibleChild(c, i);
 342       }
 343     // return values from auxiliary UI delegates are ignored
 344     while (iterator.hasNext())
 345       {
 346         ComponentUI ui = (ComponentUI) iterator.next();
 347         /* Accessible ignored = */ ui.getAccessibleChild(c, i);
 348       }
 349     return result;
 350   }
 351
 352 }