libjava/gnu/java/awt/peer/gtk/GtkListPeer.java

   1 /* GtkListPeer.java -- Implements ListPeer with GTK
   2    Copyright (C) 1998, 1999 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 gnu.java.awt.peer.gtk;
  40
  41 import java.awt.AWTEvent;
  42 import java.awt.Dimension;
  43 import java.awt.List;
  44 import java.awt.event.KeyEvent;
  45 import java.awt.event.MouseEvent;
  46 import java.awt.peer.ListPeer;
  47
  48 public class GtkListPeer extends GtkComponentPeer
  49   implements ListPeer
  50 {
  51   void create ()
  52   {
  53     List list = (List) awtComponent;
  54
  55     create (list.getRows ());
  56
  57     setMultipleMode (list.isMultipleMode ());
  58   }
  59
  60   native void create (int rows);
  61   native void connectJObject ();
  62   native void connectSignals ();
  63   native void gtkWidgetModifyFont (String name, int style, int size);
  64   native void gtkWidgetRequestFocus ();
  65
  66   native void getSize (int rows, int visibleRows, int dims[]);
  67
  68   public GtkListPeer (List list)
  69   {
  70     super (list);
  71
  72     setMultipleMode (list.isMultipleMode ());
  73
  74     if (list.getItemCount () > 0)
  75       append (list.getItems ());
  76   }
  77
  78   native void append (String items[]);
  79
  80   public native void add (String item, int index);
  81
  82   public void addItem (String item, int index)
  83   {
  84     add (item, index);
  85   }
  86
  87   public void clear ()
  88   {
  89     removeAll ();
  90   }
  91
  92   public native void delItems (int start, int end);
  93   public native void deselect (int index);
  94
  95   public Dimension getMinimumSize (int rows)
  96   {
  97     return minimumSize (rows);
  98   }
  99
 100   public Dimension getPreferredSize (int rows)
 101   {
 102     return preferredSize (rows);
 103   }
 104
 105   public native int[] getSelectedIndexes ();
 106   public native void makeVisible (int index);
 107
 108   public Dimension minimumSize (int rows)
 109   {
 110     int dims[] = new int[2];
 111
 112     int visibleRows = ((List) awtComponent).getRows();
 113     getSize (rows, visibleRows, dims);
 114     return new Dimension (dims[0], dims[1]);
 115   }
 116
 117   public Dimension preferredSize (int rows)
 118   {
 119     int dims[] = new int[2];
 120
 121     int visibleRows = ((List) awtComponent).getRows();
 122     getSize (rows, visibleRows, dims);
 123     return new Dimension (dims[0], dims[1]);
 124   }
 125
 126   public void removeAll ()
 127   {
 128     delItems (0, -1);
 129   }
 130
 131   public native void select (int index);
 132   public native void setMultipleMode (boolean b);
 133
 134   public void setMultipleSelections (boolean b)
 135   {
 136     setMultipleMode (b);
 137   }
 138
 139   public void handleEvent (AWTEvent e)
 140   {
 141     if (e.getID () == MouseEvent.MOUSE_CLICKED && isEnabled ())
 142       {
 143         // Only generate the ActionEvent on the second click of a
 144         // multiple click.
 145         MouseEvent me = (MouseEvent) e;
 146         if (!me.isConsumed ()
 147             && (me.getModifiersEx () & MouseEvent.BUTTON1_DOWN_MASK) != 0
 148             && me.getClickCount() == 2)
 149           {
 150             String selectedItem = ((List) awtComponent).getSelectedItem ();
 151
 152             // Double-click only generates an Action event if
 153             // something is selected.
 154             if (selectedItem != null)
 155               postActionEvent (((List) awtComponent).getSelectedItem (),
 156                                me.getModifiersEx ());
 157           }
 158       }
 159
 160     if (e.getID () == KeyEvent.KEY_PRESSED)
 161       {
 162         KeyEvent ke = (KeyEvent) e;
 163         if (!ke.isConsumed () && ke.getKeyCode () == KeyEvent.VK_ENTER)
 164           {
 165             String selectedItem = ((List) awtComponent).getSelectedItem ();
 166
 167             // Enter only generates an Action event if something is
 168             // selected.
 169             if (selectedItem != null)
 170               postActionEvent (selectedItem, ke.getModifiersEx ());
 171           }
 172       }
 173
 174     super.handleEvent (e);
 175   }
 176
 177   protected void postItemEvent (int item, int stateChange)
 178   {
 179     postItemEvent (new Integer (item), stateChange);
 180   }
 181 }