old-autovect-branch/libjava/classpath/gnu/java/awt/peer/gtk/GtkTextFieldPeer.java

   1 /* GtkTextFieldPeer.java -- Implements TextFieldPeer with GTK
   2    Copyright (C) 1998, 1999, 2002 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
  39 package gnu.java.awt.peer.gtk;
  40
  41 import java.awt.AWTEvent;
  42 import java.awt.Dimension;
  43 import java.awt.Font;
  44 import java.awt.FontMetrics;
  45 import java.awt.Rectangle;
  46 import java.awt.TextField;
  47 import java.awt.event.KeyEvent;
  48 import java.awt.im.InputMethodRequests;
  49 import java.awt.peer.TextFieldPeer;
  50 import java.awt.peer.TextComponentPeer;
  51
  52 public class GtkTextFieldPeer extends GtkComponentPeer
  53   implements TextComponentPeer, TextFieldPeer
  54 {
  55   native void create (int width);
  56   native void gtkWidgetSetBackground (int red, int green, int blue);
  57   native void gtkWidgetSetForeground (int red, int green, int blue);
  58
  59   public native void connectSignals ();
  60
  61   public native int getCaretPosition ();
  62   public native void setCaretPosition (int pos);
  63   public native int getSelectionStart ();
  64   public native int getSelectionEnd ();
  65   public native String getText ();
  66   public native void select (int start, int end);
  67   public native void setEditable (boolean state);
  68   public native void setText (String text);
  69
  70   public int getIndexAtPoint(int x, int y)
  71   {
  72     // FIXME
  73     return 0;
  74   }
  75
  76   public Rectangle getCharacterBounds (int pos)
  77   {
  78     // FIXME
  79     return null;
  80   }
  81
  82   public long filterEvents (long filter)
  83   {
  84     // FIXME
  85     return filter;
  86   }
  87
  88   void create ()
  89   {
  90     Font f = awtComponent.getFont ();
  91
  92     // By default, Sun sets a TextField's font when its peer is
  93     // created.  If f != null then the peer's font is set by
  94     // GtkComponent.create.
  95     if (f == null)
  96       {
  97         f = new Font ("Dialog", Font.PLAIN, 12);
  98         awtComponent.setFont (f);
  99       }
 100
 101     FontMetrics fm = getFontMetrics (f);
 102
 103     TextField tf = ((TextField) awtComponent);
 104     int cols = tf.getColumns ();
 105
 106     int text_width = cols * fm.getMaxAdvance ();
 107
 108     create (text_width);
 109
 110     setEditable (tf.isEditable ());
 111   }
 112
 113   native int gtkEntryGetBorderWidth ();
 114
 115   native void gtkWidgetModifyFont (String name, int style, int size);
 116
 117   public GtkTextFieldPeer (TextField tf)
 118   {
 119     super (tf);
 120
 121     setText (tf.getText ());
 122     setCaretPosition (0);
 123
 124     if (tf.echoCharIsSet ())
 125       setEchoChar (tf.getEchoChar ());
 126   }
 127
 128   public Dimension getMinimumSize (int cols)
 129   {
 130     return minimumSize (cols);
 131   }
 132
 133   public Dimension getPreferredSize (int cols)
 134   {
 135     return preferredSize (cols);
 136   }
 137
 138   public native void setEchoChar (char c);
 139
 140   // Deprecated
 141   public Dimension minimumSize (int cols)
 142   {
 143     int dim[] = new int[2];
 144
 145     gtkWidgetGetPreferredDimensions (dim);
 146
 147     Font f = awtComponent.getFont ();
 148     if (f == null)
 149       return new Dimension (2 * gtkEntryGetBorderWidth (), dim[1]);
 150
 151     FontMetrics fm = getFontMetrics (f);
 152
 153     int text_width = cols * fm.getMaxAdvance ();
 154
 155     int width = text_width + 2 * gtkEntryGetBorderWidth ();
 156
 157     return new Dimension (width, dim[1]);
 158   }
 159
 160   public Dimension preferredSize (int cols)
 161   {
 162     int dim[] = new int[2];
 163
 164     gtkWidgetGetPreferredDimensions (dim);
 165
 166     Font f = awtComponent.getFont ();
 167     if (f == null)
 168       return new Dimension (2 * gtkEntryGetBorderWidth (), dim[1]);
 169
 170     FontMetrics fm = getFontMetrics (f);
 171
 172     int text_width = cols * fm.getMaxAdvance ();
 173
 174     int width = text_width + 2 * gtkEntryGetBorderWidth ();
 175
 176     return new Dimension (width, dim[1]);
 177   }
 178
 179   public void setEchoCharacter (char c)
 180   {
 181     setEchoChar (c);
 182   }
 183
 184   public void handleEvent (AWTEvent e)
 185   {
 186     if (e.getID () == KeyEvent.KEY_PRESSED)
 187       {
 188         KeyEvent ke = (KeyEvent) e;
 189
 190         if (!ke.isConsumed ()
 191             && ke.getKeyCode () == KeyEvent.VK_ENTER)
 192           postActionEvent (getText (), ke.getModifiersEx ());
 193       }
 194
 195     super.handleEvent (e);
 196   }
 197   public InputMethodRequests getInputMethodRequests()
 198   {
 199       // FIXME: implement
 200     return null;
 201   }
 202 }