diff -r 76a2435edfd4 -r de1630741fbe phonebookui/pbkcommonui/src/cntextensionmanager.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonebookui/pbkcommonui/src/cntextensionmanager.cpp	Mon May 03 12:24:20 2010 +0300
@@ -0,0 +1,124 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include <QPluginLoader>
+#include <QtGui>
+#include <cntuiextensionfactory.h>
+#include "cntextensionmanager.h"
+
+CntExtensionManager::CntExtensionManager( QObject* aParent ):
+    mPluginsLoaded(false)
+{
+    setParent(aParent);
+}
+
+CntExtensionManager::~CntExtensionManager()
+{
+    unloadExtensionPlugins();
+}
+
+
+int CntExtensionManager::pluginCount()
+{
+    loadExtensionPlugins();
+    return mPlugins.count();
+}
+    
+CntUiExtensionFactory* CntExtensionManager::pluginAt( int index)
+{
+    loadExtensionPlugins();
+    QPluginLoader* pluginLoader = mPlugins[index];
+    QObject *plugin = pluginLoader->instance();
+    if (plugin)
+        {
+            return qobject_cast<CntUiExtensionFactory*>(plugin);
+        }
+    return NULL;
+}
+
+CntUiExtensionFactory* CntExtensionManager::servicePlugin(int serviceId)
+{
+    foreach(QPluginLoader* pluginLoader, mPlugins )
+    {
+        QObject *plugin = pluginLoader->instance();
+        if (plugin)
+        {
+            CntUiExtensionFactory* interfacePlugin = qobject_cast<CntUiExtensionFactory*>(plugin);
+            if(interfacePlugin && interfacePlugin->hasService(serviceId))
+            {
+                return interfacePlugin;
+            }
+        }
+    }
+    return NULL;
+}
+
+void CntExtensionManager::loadExtensionPlugins()
+{
+    if(mPluginsLoaded)
+    {
+        // Plugins already loaded, just return.
+        return;
+    }
+    // TBD: extension should be loaded when they are first time needed.
+    // This is needed due to performance impact on contacts startup.
+    // Also framework should provide means to load new plugins
+    // in runtime. It is very likely use case that new plugins will be
+    // installed in runtime while contacts is running => new plugin should
+    // be loaded when it is added to file system (assuming that this
+    // extension API will be open for 3rd party plugins)
+
+    QDir pluginsDir(QLibraryInfo::location(QLibraryInfo::PluginsPath));
+    foreach (QString fileName, pluginsDir.entryList(QDir::Files))
+        {
+        // Create plugin loader
+        QPluginLoader* pluginLoader = new QPluginLoader( 
+                pluginsDir.absoluteFilePath(fileName));
+        if ( pluginLoader->load() )
+            {
+            QObject *plugin = pluginLoader->instance();
+            if (plugin)
+                {
+                CntUiExtensionFactory* interface = qobject_cast<CntUiExtensionFactory*>(plugin);        
+                if ( interface )
+                    {
+                    mPlugins.append(pluginLoader);
+                    }
+                }
+            }
+        // If plugin loader was not for our plugins, delete loader handle
+        if ( !mPlugins.contains( pluginLoader ) )
+            {
+            pluginLoader->unload();
+            delete pluginLoader;
+            }
+        }
+    mPluginsLoaded = true;
+}
+
+void CntExtensionManager::unloadExtensionPlugins()
+{
+    // Unload plugins and clear plugin array
+    foreach (QPluginLoader* pluginLoader, mPlugins)
+        {
+        pluginLoader->unload();
+        delete pluginLoader;
+        }   
+    mPlugins.clear();  
+    mPluginsLoaded = false;  
+}
+