Source for gnu.java.awt.peer.qt.QtListPeer

   1: /* QtListPeer.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 gnu.java.awt.peer.qt;
  39: 
  40: import java.awt.Dimension;
  41: import java.awt.List;
  42: import java.awt.event.ActionEvent;
  43: import java.awt.event.ItemEvent;
  44: import java.awt.peer.ListPeer;
  45: 
  46: public class QtListPeer extends QtComponentPeer implements ListPeer
  47: {
  48:   public QtListPeer( QtToolkit kit, List owner )
  49:   {
  50:     super( kit, owner );
  51:   }
  52: 
  53:   public native void init();
  54: 
  55:   protected void setup()
  56:   {
  57:     super.setup();
  58:     List o = (List)owner;
  59:     // Multiple selection
  60:     setMultipleMode(o.isMultipleMode());
  61:     // Add initial list items.
  62:     String[] items = o.getItems();
  63:     for (int i = 0; i < items.length; i++)
  64:       add(items[i], i);
  65: 
  66:     // Initial selections.
  67:     int[] selected = o.getSelectedIndexes();
  68:     for (int i = 0; i < selected.length; i++)
  69:       select(selected[i]);
  70: 
  71:     // If no initial selection, use 0.
  72:     if(selected.length == 0 && items.length > 0)
  73:       select( 0 );
  74:   }
  75: 
  76:   private boolean ignoreNextSelect = false;
  77: 
  78:   /**
  79:    * Called back when a row is selected. -1 if no row is selected.
  80:    */
  81:   private void fireChoice( int index )
  82:   {
  83:     ignoreNextSelect = true;
  84:     if( index == -1)
  85:       ((List)owner).deselect( ((List)owner).getSelectedIndex() );
  86:       else
  87:         {
  88:           ((List)owner).select( index );
  89:           ItemEvent e = new ItemEvent((List)owner,
  90:                                       ItemEvent.ITEM_STATE_CHANGED,
  91:                                       ""+index,
  92:                                       ItemEvent.SELECTED);
  93:           QtToolkit.eventQueue.postEvent(e);
  94:         }
  95:   }
  96: 
  97:   /**
  98:    * Called back when an item is double-clicked.
  99:    */
 100:   private void itemDoubleClicked( int index, int modifiers )
 101:   {
 102:     ActionEvent e = new ActionEvent(owner,
 103:                                     ActionEvent.ACTION_PERFORMED,
 104:                                     ((List)owner).getItem( index ),
 105:                                     System.currentTimeMillis(),
 106:                                     modifiers);
 107:     QtToolkit.eventQueue.postEvent(e);
 108:   }
 109: 
 110:   private native void select(int index, boolean selected);
 111: 
 112:   // ************ Public methods *********************
 113: 
 114:   public native void add(String item, int index);
 115: 
 116:   public void addItem(String item, int index)
 117:   {
 118:     add(item, index);
 119:   }
 120: 
 121:   public void clear()
 122:   {
 123:     removeAll();
 124:   }
 125: 
 126:   /**
 127:    * Deletes items from the starting index to the ending index (inclusive).
 128:    */
 129:   public native void delItems(int start_index, int end_index);
 130: 
 131:   public void deselect(int index)
 132:   {
 133:     if( ignoreNextSelect == true )
 134:       ignoreNextSelect = false;
 135:     else
 136:       select(index, false);
 137:   }
 138: 
 139:   public native int[] getSelectedIndexes();
 140: 
 141:   public native void makeVisible(int index);
 142: 
 143:   public Dimension minimumSize(int s)
 144:   {
 145:     return getMinimumSize(s);
 146:   }
 147: 
 148:   public Dimension preferredSize(int s)
 149:   {
 150:     return getPreferredSize(s);
 151:   }
 152: 
 153:   public void removeAll()
 154:   {
 155:     delItems(0, ((List)owner).getItemCount() - 1);
 156:   }
 157: 
 158:   public void select(int index)
 159:   {
 160:     if( ignoreNextSelect == true )
 161:       ignoreNextSelect = false;
 162:     else
 163:       select(index, true);
 164:   }
 165: 
 166:   /**
 167:    * Sets multiple-selection mode.
 168:    * Note there's a bug in multiple selection in Qt 4.0.0, use 4.0.1.
 169:    */
 170:   public native void setMultipleMode(boolean multi);
 171: 
 172:   public void setMultipleSelections(boolean multi)
 173:   {
 174:     setMultipleMode(multi);
 175:   }
 176: 
 177:   public Dimension getPreferredSize(int s)
 178:   {
 179:     // FIXME
 180:     return getPreferredSize();
 181:   }
 182: 
 183:   public Dimension getMinimumSize(int s)
 184:   {
 185:     // FIXME
 186:     return getMinimumSize();
 187:   }
 188: }