1 files changed, 72 insertions, 0 deletions
diff --git a/bundles/org.eclipse.osgi/supplement/src/org/eclipse/osgi/framework/eventmgr/EventListeners.java b/bundles/org.eclipse.osgi/supplement/src/org/eclipse/osgi/framework/eventmgr/EventListeners.java
new file mode 100644
index 000000000..2dc9c5a58
--- /dev/null
+++ b/bundles/org.eclipse.osgi/supplement/src/org/eclipse/osgi/framework/eventmgr/EventListeners.java
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ * Copyright (c) 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.osgi.framework.eventmgr;
+
+/**
+ * This class manages the list of listeners.
+ * Listeners may be added or removed as necessary.
+ */
+
+public class EventListeners
+{
+    /**
+     * This field contains the listener list.
+     */
+    ListenerList list;
+
+    /**
+     * Constructor for EventListeners. An empty list of listeners is created.
+     *
+     */
+    public EventListeners()
+    {
+        list = null;
+    }
+
+    /**
+     * This method is called to add a listener to the list.
+     *
+     * @param listener This is the listener object to be added to the list.
+     * @param listenerObject This is an optional listener-specific object.
+     * This object will be passed to the EventSource along with the listener
+     * when the listener is to be called.
+     */
+    public synchronized void addListener(Object listener, Object listenerObject)
+    {
+        if (listener != null)
+        {
+            list = ListenerList.addListener(list, listener, listenerObject);
+        }
+    }
+
+    /**
+     * This method is called to remove a listener from the list.
+     *
+     * @param listener This is the listener object to be removed from the list.
+     */
+    public synchronized void removeListener(Object listener)
+    {
+        if (listener != null)
+        {
+            list = ListenerList.removeListener(list, listener);
+        }
+    }
+
+    /**
+     * This method is called to remove all listeners from the list.
+     */
+    public synchronized void removeAllListeners()
+    {
+        list = null;
+    }
+}
+