[cp-patches] FYI: Added ButtonChangeListener to javax.swing.AbstractButton

[Roman Kennke]

I added the inner class ButtonChangeListener to javax.swing.AbstractButton.

2005-05-13  Roman Kennke  <address@hidden>

       * javax/swing/AbstractButton
       (ButtonChangeListener): Added this inner class.


/Roman

Index: javax/swing/AbstractButton.java
===================================================================
RCS file: /cvsroot/classpath/classpath/javax/swing/AbstractButton.java,v
retrieving revision 1.27
diff -u -r1.27 AbstractButton.java
--- javax/swing/AbstractButton.java     28 Jan 2005 12:12:54 -0000      1.27
+++ javax/swing/AbstractButton.java     13 May 2005 11:49:57 -0000
@@ -47,6 +47,7 @@
 import java.awt.event.ActionListener;
 import java.awt.event.ItemEvent;
 import java.awt.event.ItemListener;
+import java.io.Serializable;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 
@@ -152,7 +153,23 @@
   implements ItemSelectable, SwingConstants
 {
   private static final long serialVersionUID = -937921345538462020L;
-  
+
+  /**
+   * An extension of ChangeListener to be serializable.
+   */
+  protected class ButtonChangeListener
+    implements ChangeListener, Serializable
+  {
+    /**
+     * Notified when the target of the listener changes its state.
+     *
+     * @param ev the ChangeEvent describing the change
+     */
+    public void stateChanged(ChangeEvent ev)
+    {
+    }
+  }
+
   /** The icon displayed by default. */
   Icon default_icon;