1 files changed, 128 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/peer/gtk/GtkCheckboxPeer.java b/libjava/classpath/gnu/java/awt/peer/gtk/GtkCheckboxPeer.java
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+/* 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., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 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 ();
+  }
+}