libjava/javax/swing/JFrame.java

   1 /* JFrame.java --
   2    Copyright (C) 2002, 2004 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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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
  39 package javax.swing;
  40
  41 import java.awt.AWTEvent;
  42 import java.awt.BorderLayout;
  43 import java.awt.Component;
  44 import java.awt.Container;
  45 import java.awt.Dimension;
  46 import java.awt.Frame;
  47 import java.awt.Graphics;
  48 import java.awt.LayoutManager;
  49 import java.awt.event.KeyEvent;
  50 import java.awt.event.WindowEvent;
  51
  52 import javax.accessibility.AccessibleContext;
  53
  54 /**
  55  * Unlike JComponent derivatives, JFrame inherits from
  56  * java.awt.Frame. But also lets a look-and-feel component to its work.
  57  *
  58  * @author Ronald Veldema (rveldema@cs.vu.nl)
  59  */
  60 public class JFrame extends Frame implements WindowConstants, RootPaneContainer
  61 {
  62     protected  AccessibleContext accessibleContext;
  63
  64     private int close_action = HIDE_ON_CLOSE;
  65
  66
  67     /***************************************************
  68      *
  69      *  initia
  70      *
  71      *
  72      *************/
  73
  74
  75     public JFrame()
  76     {
  77         super("JFrame");
  78         frameInit();
  79     }
  80
  81     public JFrame(String title)
  82     {
  83         super(title);
  84         frameInit();
  85     }
  86
  87
  88     /***************************************************
  89      *
  90      *
  91      *  methods, this part is shared with JDialog, JFrame
  92      *
  93      *
  94      *************/
  95
  96
  97     private boolean checking;
  98     protected  JRootPane         rootPane;
  99
 100
 101     protected  void frameInit()
 102     {
 103       super.setLayout(new BorderLayout(1, 1));
 104       enableEvents(AWTEvent.WINDOW_EVENT_MASK);
 105       getRootPane(); // will do set/create
 106     }
 107
 108   public Dimension getPreferredSize()
 109   {
 110     Dimension d = super.getPreferredSize();
 111     return d;
 112   }
 113
 114     JMenuBar getJMenuBar()
 115     {    return getRootPane().getJMenuBar();   }
 116
 117     void setJMenuBar(JMenuBar menubar)
 118     {    getRootPane().setJMenuBar(menubar); }
 119
 120
 121   public  void setLayout(LayoutManager manager)
 122   {    super.setLayout(manager);  }
 123
 124   public void setLayeredPane(JLayeredPane layeredPane)
 125     {   getRootPane().setLayeredPane(layeredPane);   }
 126
 127   public JLayeredPane getLayeredPane()
 128     {   return getRootPane().getLayeredPane();     }
 129
 130   public JRootPane getRootPane()
 131     {
 132         if (rootPane == null)
 133             setRootPane(createRootPane());
 134         return rootPane;
 135     }
 136
 137   public void setRootPane(JRootPane root)
 138     {
 139         if (rootPane != null)
 140             remove(rootPane);
 141
 142         rootPane = root;
 143         add(rootPane, BorderLayout.CENTER);
 144     }
 145
 146   public JRootPane createRootPane()
 147     {   return new JRootPane();    }
 148
 149   public Container getContentPane()
 150     {    return getRootPane().getContentPane();     }
 151
 152   public void setContentPane(Container contentPane)
 153     {    getRootPane().setContentPane(contentPane);    }
 154
 155   public Component getGlassPane()
 156     {    return getRootPane().getGlassPane();   }
 157
 158   public void setGlassPane(Component glassPane)
 159     {   getRootPane().setGlassPane(glassPane);   }
 160
 161
 162     protected  void addImpl(Component comp, Object constraints, int index)
 163     {   super.addImpl(comp, constraints, index);    }
 164
 165
 166     public void remove(Component comp)
 167     {   getContentPane().remove(comp);  }
 168
 169     protected  boolean isRootPaneCheckingEnabled()
 170     {    return checking;        }
 171
 172
 173     protected  void setRootPaneCheckingEnabled(boolean enabled)
 174     { checking = enabled;  }
 175
 176
 177     public void update(Graphics g)
 178     {   paint(g);  }
 179
 180     protected  void processKeyEvent(KeyEvent e)
 181     {   super.processKeyEvent(e);    }
 182
 183     /////////////////////////////////////////////////////////////////////////////////
 184
 185   public AccessibleContext getAccessibleContext()
 186   {
 187     return accessibleContext;
 188   }
 189
 190     public int getDefaultCloseOperation()
 191     {    return close_action;   }
 192
 193
 194
 195     protected  String paramString()
 196     {   return "JFrame";     }
 197
 198
 199     protected  void processWindowEvent(WindowEvent e)
 200     {
 201         super.processWindowEvent(e);
 202         switch (e.getID())
 203             {
 204             case WindowEvent.WINDOW_CLOSING:
 205                 {
 206                     switch(close_action)
 207                         {
 208                         case EXIT_ON_CLOSE:
 209                             {
 210                                 System.exit(0);
 211                                 break;
 212                             }
 213                         case DISPOSE_ON_CLOSE:
 214                             {
 215                                 dispose();
 216                                 break;
 217                             }
 218                         case HIDE_ON_CLOSE:
 219                             {
 220                                 setVisible(false);
 221                                 break;
 222                             }
 223                         case DO_NOTHING_ON_CLOSE:
 224                             break;
 225                         }
 226                     break;
 227                 }
 228
 229             case WindowEvent.WINDOW_CLOSED:
 230             case WindowEvent.WINDOW_OPENED:
 231             case WindowEvent.WINDOW_ICONIFIED:
 232             case WindowEvent.WINDOW_DEICONIFIED:
 233             case WindowEvent.WINDOW_ACTIVATED:
 234             case WindowEvent.WINDOW_DEACTIVATED:
 235                 break;
 236             }
 237     }
 238
 239     /**
 240      * Defines what happens when this frame is closed. Can be one off
 241      * <code>EXIT_ON_CLOSE</code>,
 242      * <code>DISPOSE_ON_CLOSE</code>,
 243      * <code>HIDE_ON_CLOSE</code> or
 244      * <code>DO_NOTHING_ON_CLOSE</code>.
 245      * The default is <code>HIDE_ON_CLOSE</code>.
 246      * When <code>EXIT_ON_CLOSE</code> is specified this method calls
 247      * <code>SecurityManager.checkExit(0)</code> which might throw a
 248      * <code>SecurityException</code>. When the specified operation is
 249      * not one of the above a <code>IllegalArgumentException</code> is
 250      * thrown.
 251      */
 252     public void setDefaultCloseOperation(int operation)
 253     {
 254       SecurityManager sm = System.getSecurityManager();
 255       if (sm != null && operation == EXIT_ON_CLOSE)
 256         sm.checkExit(0);
 257
 258       if (operation != EXIT_ON_CLOSE && operation != DISPOSE_ON_CLOSE
 259           && operation != HIDE_ON_CLOSE && operation != DO_NOTHING_ON_CLOSE)
 260         throw new IllegalArgumentException("operation = " + operation);
 261
 262       close_action = operation;
 263     }
 264
 265 }