Created ActionEvent-derived class that allows an argument to be posted

along with an action.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@528 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/swing/event/CommandEvent.java

@@ -0,0 +1,33 @@
+//
+// $Id: CommandEvent.java,v 1.1 2001/12/20 00:38:03 mdb Exp $
+
+package com.samskivert.swing;
+
+import java.awt.event.ActionEvent;
+
+/**
+ * An action event with an associated argument. Often times with
+ * controllers, one wants to post a command with an associated object
+ * (which we call the argument), but action event provides no mechanism to
+ * do so. So this class is provided for such situations.
+ */
+public class CommandEvent extends ActionEvent
+{
+    public CommandEvent (Object source, String command, Object argument)
+    {
+        super(source, ActionEvent.ACTION_PERFORMED, command);
+        _argument = argument;
+    }
+
+    /**
+     * Returns the argument provided to the command event at construct
+     * time.
+     */
+    public Object getArgument ()
+    {
+        return _argument;
+    }
+
+    /** The argument to this command event. */
+    protected Object _argument;
+}