| /* GtkCheckboxGroupPeer.java - Wrap a CheckboxGroup |
| Copyright (C) 2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.awt.peer.gtk; |
| |
| import java.awt.CheckboxGroup; |
| import java.util.WeakHashMap; |
| |
| // Note that there is no peer interface for a CheckboxGroup. We |
| // introduce our own in order to make it easier to keep a piece of |
| // native state for each one. |
| public class GtkCheckboxGroupPeer extends GtkGenericPeer |
| { |
| // This maps from a CheckboxGroup to the native peer. |
| private static WeakHashMap map = new WeakHashMap (); |
| |
| // Find the native peer corresponding to a CheckboxGroup. |
| public static synchronized GtkCheckboxGroupPeer |
| getCheckboxGroupPeer (CheckboxGroup group) |
| { |
| if (group == null) |
| return null; |
| GtkCheckboxGroupPeer nat = (GtkCheckboxGroupPeer) map.get (group); |
| if (nat == null) |
| { |
| nat = new GtkCheckboxGroupPeer (); |
| map.put (group, nat); |
| } |
| return nat; |
| } |
| |
| private GtkCheckboxGroupPeer () |
| { |
| // We don't need any special state here. Note that we can't store |
| // a reference to the java-side CheckboxGroup. That would mean |
| // they could never be collected. |
| super (null); |
| } |
| |
| // Dispose of our native resources. |
| public native void dispose (); |
| |
| // Remove a given checkbox from this group. |
| public native void remove (GtkCheckboxPeer box); |
| |
| // When collected, clean up the native state. |
| protected void finalize () |
| { |
| dispose (); |
| } |
| } |