--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/PresenceManager2/SrcCommon/RGenericObserverArrayBase.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,159 @@
+/*
+* Copyright (c) 2004 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:  Generic observer array.
+*
+*/
+
+#ifndef __RGENERICOBSERVERARRAYBASE_H__
+#define __RGENERICOBSERVERARRAYBASE_H__
+
+//  INCLUDES
+#include <E32Base.h>
+
+
+
+// CLASS DECLARATION
+/**
+ * Observer notify mediator base.
+ *
+ * Base interface to manage observer notifications
+ * and notify errors. Typical implementation will
+ * forward notifications to actual type specific
+ * mediator.
+ *
+ * Main idea behind the notify mediator is encapsulate
+ * the observer array management from actual observer
+ * type specific details. (Type specific details will
+ * be implemented by the concrete mediator.) Usage
+ * of mediator base interface allows generic
+ * observer array implementation.
+ *
+ * @since 3.0
+ */
+class MGenObserverNotifyMediatorBase
+    {
+    public:
+
+        /**
+         * Observer notification.
+         * This member is internal and not intended for use.
+         */
+        virtual void MediateNotifyL( TAny* aObserverToNotify ) = 0;
+
+
+        /**
+         * Observer notification from error.
+         * This member is internal and not intended for use.
+         */
+        virtual void MediateNotifyError( TAny* aObserverToNotify, TInt aLeaveError ) = 0;
+
+
+    protected:
+
+        /**
+         * Protected destructor.
+         */
+        virtual ~MGenObserverNotifyMediatorBase() {}
+    };
+
+
+
+
+// CLASS DECLARATION
+/**
+ * Generic observer array.
+ *
+ * Generic observer array to manage observers
+ * and notify them. Observers are managed as
+ * typeless TAny pointers. Notification is done
+ * trough generic MGenObserverNotifyMediatorBase
+ * notify mediator.
+ *
+ * @since 3.0
+ */
+NONSHARABLE_CLASS( RGenericObserverArrayBase ) :
+        private RPointerArrayBase   // CSI: 70 #
+    {
+protected: //protected members for derived classes
+
+    /**
+     * C++ constructor.
+     * This member is internal and not intended for use.
+     */
+    RGenericObserverArrayBase();
+
+    /**
+     * Closes the array and frees all memory allocated to it.
+     * This member is internal and not intended for use.
+     */
+    void Close();
+
+    /**
+     * Adds observer.
+     * This member is internal and not intended for use.
+     */
+    TInt AddObserver( const TAny* aObserver );
+
+    /**
+     * Removes observer.
+     * This member is internal and not intended for use.
+     */
+    TInt RemoveObserver( const TAny* aObserver );
+
+    /**
+     * Gets observer count.
+     * This member is internal and not intended for use.
+     */
+    TInt Count();
+
+    /**
+     * Observer notify implementation.
+     * This member is internal and not intended for use.
+     */
+    void NotifyObservers( MGenObserverNotifyMediatorBase& aNotifyMediator );
+
+
+    /**
+     * Observer notify implementation.
+     * This member is internal and not intended for use.
+     */
+    void NotifyErrorObservers( MGenObserverNotifyMediatorBase& aNotifyMediator,
+                               TInt aError );
+
+    /**
+     * Observer notify implementation.
+     * This member is internal and not intended for use.
+     */
+    TBool IsNotifyLoopRunning() const;
+
+
+private: //private helpers
+
+    /**
+     * Private helper.
+     * This member is internal and not intended for use.
+     */
+    void FinalizeObsArrayAfterNotifyLoop();
+
+
+private: //Data
+
+    //OWN: Flag describing the observer array state
+    TBool iNotifyLoopRunning;
+    };
+
+#endif      //__RGenericObserverArrayBase_H__
+//  End of File
+
+