--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/util/plugin/PluginContext.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,139 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1999-2001 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 WALT DISNEY INTERNET GROUP OR ITS
+ * 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.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */	
+package com.go.trove.util.plugin;
+
+import com.go.trove.util.PropertyMap;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Plugin can reference other Plugins through the PluginContext. If a Plugin is
+ * not immediately available the Plugin can register itself as a listener with 
+ * the PluginContext so as to be notified when new Plugins are added to the 
+ * PluginContext. When Plugins are fully initialized and want to make 
+ * themselves available to other Plugins they should add themselves to the 
+ * PluginContext.
+ *
+ * @author Scott Jappinen
+ * @version <!--$$Revision: 1.1 $-->-<!--$$JustDate:--> 01/03/23 <!-- $-->
+ */
+public class PluginContext {
+    
+    private List mPluginListeners;
+    private Map mPluginMap;
+    
+    public PluginContext() {
+        mPluginListeners = new ArrayList();
+        mPluginMap = new HashMap(7);
+    }
+   
+    /**
+     * Adds a PluginListener to the PluginContext. Plugins or anything
+     * else that want to listen to PluginEvents should add themselves
+     * to the PluginContext through this method.
+     *
+     * @param listener the PluginListener to be added.
+     */
+    public void addPluginListener(PluginListener listener) {
+        if (!mPluginListeners.contains(listener)) {
+            mPluginListeners.add(listener);
+        }
+    }
+    
+    /**
+     * Adds a Plugin to the PluginContext. Plugins that want to make
+     * themselves available to other Plugins should add themselves
+     * to the PluginContext through this method. All PluginListeners
+     * will be notified of the new addition.
+     *
+     * @param plugin the Plugin to be added.
+     */
+    public void addPlugin(Plugin plugin) {
+        if (!mPluginMap.containsKey(plugin.getName())) {
+            mPluginMap.put(plugin.getName(), plugin);
+            PluginEvent event = new PluginEvent(this, plugin);
+            firePluginAddedEvent(event);
+        }
+    }
+
+    /**
+     * Returns a Plugin by name.
+     *
+     * @param name the name of the Plugin.
+     * @return Plugin the Plugin object.
+     */
+    public Plugin getPlugin(String name) {
+        return (Plugin) mPluginMap.get(name);
+    }
+    
+    /**
+     * Returns a Map of all of the Plugins.
+     *
+     * @return Map the map of Plugins.
+     */
+    public Map getPlugins() {
+        return new HashMap(mPluginMap);		
+    }	
+    
+    /* Notifies all PluginListeners of a Plugin being added to this class.
+     */
+    protected void firePluginAddedEvent(PluginEvent event) {
+        PluginListener[] listeners = new PluginListener[mPluginListeners.size()];
+        listeners = (PluginListener[]) mPluginListeners.toArray(listeners);
+        for (int i=0; i < listeners.length; i++) {			
+            listeners[i].pluginAdded(event);
+        }
+    }
+}