Source for gnu.java.awt.peer.gtk.GtkListPeer

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