1 files changed, 120 insertions, 0 deletions
diff --git a/engine/src/networking/com/jme3/network/base/MessageListenerRegistry.java b/engine/src/networking/com/jme3/network/base/MessageListenerRegistry.java
new file mode 100644
index 0000000..c861786
--- /dev/null
+++ b/engine/src/networking/com/jme3/network/base/MessageListenerRegistry.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2011 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jme3.network.base;
+
+import com.jme3.network.Message;
+import com.jme3.network.MessageListener;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ *  Keeps track of message listeners registered to specific
+ *  types or to any type.
+ *
+ *  @version   $Revision: 8843 $
+ *  @author    Paul Speed
+ */
+public class MessageListenerRegistry<S> implements MessageListener<S>
+{
+    static Logger log = Logger.getLogger(MessageListenerRegistry.class.getName());
+    
+    private List<MessageListener<? super S>> listeners = new CopyOnWriteArrayList<MessageListener<? super S>>();
+    private Map<Class,List<MessageListener<? super S>>> typeListeners 
+                    = new ConcurrentHashMap<Class,List<MessageListener<? super S>>>(); 
+
+    public MessageListenerRegistry()
+    {
+    }
+ 
+    public void messageReceived( S source, Message m )
+    {
+        boolean delivered = false;
+        
+        for( MessageListener<? super S> l : listeners ) {
+            l.messageReceived( source, m );
+            delivered = true;
+        }
+        
+        for( MessageListener<? super S> l : getListeners(m.getClass(),false) ) {
+            l.messageReceived( source, m );
+            delivered = true;
+        }
+        
+        if( !delivered ) {
+            log.log( Level.INFO, "Received message had no registered listeners: {0}", m );
+        }
+    }
+ 
+    protected List<MessageListener<? super S>> getListeners( Class c, boolean create )
+    {
+        List<MessageListener<? super S>> result = typeListeners.get(c);
+        if( result == null && create ) {
+            result = new CopyOnWriteArrayList<MessageListener<? super S>>();
+            typeListeners.put( c, result );
+        }
+        
+        if( result == null ) {
+            result = Collections.emptyList();
+        }
+        return result;   
+    }
+    
+    public void addMessageListener( MessageListener<? super S> listener )
+    {
+        listeners.add(listener);
+    } 
+
+    public void removeMessageListener( MessageListener<? super S> listener )
+    {
+        listeners.remove(listener);
+    } 
+
+    public void addMessageListener( MessageListener<? super S> listener, Class... classes )
+    {
+        for( Class c : classes ) {
+            getListeners(c, true).add(listener);
+        }
+    } 
+
+    public void removeMessageListener( MessageListener<? super S> listener, Class... classes )
+    {
+        for( Class c : classes ) {
+            getListeners(c, false).remove(listener);
+        }
+    }
+}