| /* GtkCheckboxPeer.java -- Implements CheckboxPeer with GTK |
| Copyright (C) 1998, 1999, 2002, 2003 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.Checkbox; |
| import java.awt.CheckboxGroup; |
| import java.awt.peer.CheckboxPeer; |
| |
| public class GtkCheckboxPeer extends GtkComponentPeer |
| implements CheckboxPeer |
| { |
| // Group from last time it was set. |
| public GtkCheckboxGroupPeer old_group; |
| // The current state of the GTK checkbox. |
| private boolean currentState; |
| |
| public native void create (GtkCheckboxGroupPeer group); |
| public native void nativeSetCheckboxGroup (GtkCheckboxGroupPeer group); |
| public native void connectSignals (); |
| native void gtkWidgetModifyFont (String name, int style, int size); |
| native void gtkButtonSetLabel (String label); |
| native void gtkToggleButtonSetActive (boolean is_active); |
| |
| public GtkCheckboxPeer (Checkbox c) |
| { |
| super (c); |
| } |
| |
| // FIXME: we must be able to switch between a checkbutton and a |
| // radiobutton dynamically. |
| public void create () |
| { |
| Checkbox checkbox = (Checkbox) awtComponent; |
| CheckboxGroup g = checkbox.getCheckboxGroup (); |
| old_group = GtkCheckboxGroupPeer.getCheckboxGroupPeer (g); |
| create (old_group); |
| gtkToggleButtonSetActive (checkbox.getState ()); |
| gtkButtonSetLabel (checkbox.getLabel ()); |
| } |
| |
| public void setState (boolean state) |
| { |
| if (currentState != state) |
| gtkToggleButtonSetActive (state); |
| } |
| |
| public void setLabel (String label) |
| { |
| gtkButtonSetLabel (label); |
| } |
| |
| public void setCheckboxGroup (CheckboxGroup group) |
| { |
| GtkCheckboxGroupPeer gp |
| = GtkCheckboxGroupPeer.getCheckboxGroupPeer (group); |
| if (gp != old_group) |
| { |
| if (old_group != null) |
| old_group.remove (this); |
| nativeSetCheckboxGroup (gp); |
| old_group = gp; |
| } |
| } |
| |
| // Override the superclass postItemEvent so that the peer doesn't |
| // need information that we have. |
| public void postItemEvent (Object item, int stateChange) |
| { |
| Checkbox currentCheckBox = ((Checkbox)awtComponent); |
| // A firing of the event is only desired if the state has changed due to a |
| // button press. The currentCheckBox's state must be different from the |
| // one that the stateChange is changing to. |
| // stateChange = 1 if it goes from false -> true |
| // stateChange = 2 if it goes from true -> false |
| if (( !currentCheckBox.getState() && stateChange == 1) |
| || (currentCheckBox.getState() && stateChange == 2)) |
| { |
| super.postItemEvent (awtComponent, stateChange); |
| currentState = !currentCheckBox.getState(); |
| currentCheckBox.setState(currentState); |
| } |
| } |
| |
| public void dispose () |
| { |
| // Notify the group so that the native state can be cleaned up |
| // appropriately. |
| if (old_group != null) |
| old_group.remove (this); |
| super.dispose (); |
| } |
| } |