--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpx/collectionframework/collectionengine/inc/mpxcollectionpluginhandler.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,171 @@
+/*
+* Copyright (c) 2006 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:  Plugin handler
+*
+*/
+
+
+#ifndef CMPXCOLLECTIONPLUGINHANDLER_H
+#define CMPXCOLLECTIONPLUGINHANDLER_H
+
+#include <mpxpluginhandlerbase.h>
+#include <mpxcollectionframeworkdefs.h>
+
+class CMPXCollectionPlugin;
+class MMPXCollectionPluginObserver;
+
+/**
+*   Processes plug-ins
+*/
+NONSHARABLE_CLASS(CMPXCollectionPluginHandler) : public CMPXPluginHandlerBase
+    {
+public:
+    /**
+    *  Two-phased constructor.
+    *
+    *  @param aPluginObserver plugin observer
+    *  @param aObserver plugin handler observer
+    *  @return Constructed object
+    */
+    static CMPXCollectionPluginHandler* NewL(MMPXCollectionPluginObserver& aPluginObserver,
+        MMPXPluginHandlerObserver& aObserver);
+
+    /**
+    *  Destructor
+    */
+    ~CMPXCollectionPluginHandler();
+
+public:
+    /**
+    *  Returns currently loaded plug-in, or NULL if none
+    *
+    *  @return plugin object interface
+    */
+    inline CMPXCollectionPlugin* Plugin();
+
+    /**
+    * Get all currently loaded plugins
+    * @return array of loaded plugins
+    */
+    TArray<CMPXCollectionPlugin*> LoadedPlugins();
+
+   /**
+    *  Remove task for one client which is the observer of tasks
+    *  @aCallback the observer of the tasks to be removed
+    */
+    void RemoveTask(TAny* aCallback);
+
+    /**
+    * Retrieve the list of non cachable attributes for a plugin
+    * @param aPlugin UID of the plugin
+    */
+    const TArray<TUid> NonCacheableAttributesL( const TUid& aPluginId );
+
+    /**
+    * Check if a plugin is cachable in the collection cache
+    * @param aPlugin
+    */
+    TBool PluginCachable( const TUid& aPluginId );
+
+    /**
+    *  Returns the loaded plugin by implementation uid.
+    *
+    *  @param aUid implementation uid of the plugin
+    *  @return plugin pointer if plugin already loaded or NULL if not loaded
+    */
+    CMPXCollectionPlugin* LoadedPlugin(const TUid& aUid);
+
+private:
+
+    /**
+    * From Base CMPXPluginHandlerBase
+    *  Resolves a plugin
+    */
+    void ResolvePluginL();
+
+    /**
+    * From Base CMPXPluginHandlerBase
+    * Constructs the collection plugin info
+    */
+    CMPXPluginInfo* ConstructPluginInfoLC( const CImplementationInformation& aData  );
+
+    /**
+    * @see CMPXPluginHandlerBase
+    */
+    TBool IsPluginLoaded(const TUid& aPluginUid);
+
+    /**
+    * @see CMPXPluginHandlerBase
+    */
+    void LoadPluginL(const TUid& aPluginUid);
+
+
+    /**
+    * From Base CMPXPluginHandlerBase
+    *  Unloads a plugin
+    *  @param aUid identifies the plugin
+    */
+    void UnloadPlugin(const TUid& aUid);
+
+
+    /**
+    *  Create the plugin object given UID
+    *
+    *  @param UID of the plugin
+    *  @return plugin object
+    */
+    CMPXCollectionPlugin* CreateCollectionPluginL(const TUid& aUid);
+
+    /**
+    *  Returns the loaded plugin index corresponding to the UID.
+    *
+    *  @param aUid implementation uid of the plugin
+    *  @return plugin index in iLoadedPlugins or KErrNotFound
+    */
+    TInt LoadedPluginIndex(const TUid& aUid);
+
+    /**
+    *  Unloads the plugin at a specified index.
+    *  @param aIndex index of the plugin in iLoadedPlugins
+    */
+    void UnloadPlugin(TInt aIndex);
+
+private:
+
+    /**
+    *  2nd phase contructor
+    */
+    void ConstructL();
+
+    /**
+    *  C++ constructor
+    *
+    *  @param aPluginObserver plugin observer
+    *  @param aObserver plugin handler observer
+    */
+    CMPXCollectionPluginHandler(MMPXCollectionPluginObserver& aPluginObserver,
+        MMPXPluginHandlerObserver& aObserver);
+
+private:
+    MMPXCollectionPluginObserver* iPluginObserver; //Not Owned
+    RPointerArray<CMPXCollectionPlugin> iLoadedPlugins;
+
+    // Most recently Selected plugin
+    //
+    CMPXCollectionPlugin* iPlugin;
+    };
+
+#include "mpxcollectionpluginhandler.inl"
+
+#endif // CMPXCOLLECTIONPLUGINHANDLER_H