1 /* GtkCheckboxPeer.java -- Implements CheckboxPeer with GTK
2 Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
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)
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.
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
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
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. */
39 package gnu
.java
.awt
.peer
.gtk
;
41 import java
.awt
.Checkbox
;
42 import java
.awt
.CheckboxGroup
;
43 import java
.awt
.peer
.CheckboxPeer
;
45 public class GtkCheckboxPeer
extends GtkComponentPeer
46 implements CheckboxPeer
48 // Group from last time it was set.
49 public GtkCheckboxGroupPeer old_group
;
50 // The current state of the GTK checkbox.
51 private boolean currentState
;
52 private boolean changing
= false;
54 public native void create (GtkCheckboxGroupPeer group
);
55 public native void nativeSetCheckboxGroup (GtkCheckboxGroupPeer group
);
56 public native void connectSignals ();
57 native void gtkWidgetModifyFont (String name
, int style
, int size
);
58 native void gtkButtonSetLabel (String label
);
59 native void gtkToggleButtonSetActive (boolean is_active
);
61 public GtkCheckboxPeer (Checkbox c
)
66 // FIXME: we must be able to switch between a checkbutton and a
67 // radiobutton dynamically.
70 Checkbox checkbox
= (Checkbox
) awtComponent
;
71 CheckboxGroup g
= checkbox
.getCheckboxGroup ();
72 old_group
= GtkCheckboxGroupPeer
.getCheckboxGroupPeer (g
);
74 gtkToggleButtonSetActive (checkbox
.getState ());
75 gtkButtonSetLabel (checkbox
.getLabel ());
78 public void setState (boolean state
)
80 // prevent item_toggled_cb -> postItemEvent ->
81 // awtComponent.setState -> this.setState ->
82 // gtkToggleButtonSetActive self-deadlock on the GDK lock.
83 if (changing
&& Thread
.currentThread() == GtkToolkit
.mainThread
)
89 if (currentState
!= state
)
90 gtkToggleButtonSetActive (state
);
93 public void setLabel (String label
)
95 gtkButtonSetLabel (label
);
98 public void setCheckboxGroup (CheckboxGroup group
)
100 GtkCheckboxGroupPeer gp
101 = GtkCheckboxGroupPeer
.getCheckboxGroupPeer (group
);
104 if (old_group
!= null)
105 old_group
.remove (this);
106 nativeSetCheckboxGroup (gp
);
111 // Override the superclass postItemEvent so that the peer doesn't
112 // need information that we have.
113 // called back by native side: item_toggled_cb
114 public void postItemEvent (Object item
, int stateChange
)
116 Checkbox currentCheckBox
= ((Checkbox
)awtComponent
);
117 // A firing of the event is only desired if the state has changed due to a
118 // button press. The currentCheckBox's state must be different from the
119 // one that the stateChange is changing to.
120 // stateChange = 1 if it goes from false -> true
121 // stateChange = 2 if it goes from true -> false
122 if (( !currentCheckBox
.getState() && stateChange
== 1)
123 || (currentCheckBox
.getState() && stateChange
== 2))
125 super.postItemEvent (awtComponent
, stateChange
);
126 currentState
= !currentCheckBox
.getState();
128 currentCheckBox
.setState(currentState
);
132 public void dispose ()
134 // Notify the group so that the native state can be cleaned up
136 if (old_group
!= null)
137 old_group
.remove (this);