--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/landmarks/locationlandmarks/server/inc/EPos_CPosLmEventHandler.h	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,162 @@
+/*
+* Copyright (c) 2005 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: class to handle event notification to subscribers.
+*
+*
+*/
+
+
+#ifndef CPOSLMEVENTHANDLER_H
+#define CPOSLMEVENTHANDLER_H
+
+// INCLUDES
+#include <e32base.h>
+#include <EPos_Landmarks.h>
+
+// CLASS DECLARATION
+
+/**
+* This class handles event notification to subscribers.
+*/
+class CPosLmEventHandler : public CBase
+    {
+
+    /**
+    * Specifies which events that should be removed from the event queue in
+    * @p RemoveEvents.
+    */
+    enum TRemoveEventType
+        {
+        ESpecificLandmarks = 0,
+        ESpecificCategories,
+        ENewDefaultDbs
+        };
+
+    public:  // Constructor & Destructor
+
+        /**
+        * Two-phased constructor.
+        */
+        static CPosLmEventHandler* NewL();
+
+        /**
+        * Destructor.
+        */
+        ~CPosLmEventHandler();
+
+    public:     // New functions
+
+        /**
+        * If there is at least one event waiting in the event queue, this
+        * message will be completed directly. Otherwise the message will be
+        * put on hold until an event arrives.
+        *
+        * @param aMessagePtr A message.
+        */
+        void HandleRequestForEventL(
+        /* IN */        const RMessagePtr2& aMessage
+        );
+
+        /**
+        * Called when a landmark operation has generated an event.
+        * If there is a message waiting for an event it will be completed
+        * directly. Otherwise this event will be put in the event queue.
+        *
+        * @param aEvent An event.
+        */
+        void HandleIncomingEventL(
+        /* IN */        TPosLmEvent aEvent
+        );
+
+        /**
+        * Completes an outstanding event if it exists.
+        *
+        * @param aError The error code to complete with.
+        */
+        void CompleteAnyOutStandingRequest(
+        /* IN */        TInt aError
+        );
+
+    private:
+
+        /**
+        * C++ default constructor.
+        */
+        CPosLmEventHandler();
+
+        void WriteEventAndComplete(
+        /* IN */        const RMessagePtr2& aMessage,
+        /* IN */        TPosLmEvent aEvent
+        );
+
+        void AddToEventQueueL(
+        /* IN */        TPosLmEvent aEvent
+        );
+
+        TBool MergeEventsIfPossibleL(
+        /* IN */        TPosLmEvent aEvent
+        );
+
+        void HandleUnknownEvent(
+        /* IN */        TPosLmEventType aEventInQueue,
+        /* IN */        TBool aExpression,
+        /* IN/OUT */    TBool& aAddEvent,
+        /* IN/OUT */    TInt& aIndex
+        );
+
+        void HandleSpecificEvent(
+        /* IN */        TPosLmEventType aEventInQueue,
+        /* IN */        TPosLmEventType aCompareEventType,
+        /* IN/OUT */    TBool& aAddEvent,
+        /* IN/OUT */    TInt& aNoOfSpecificCats,
+        /* IN/OUT */    TInt& aNoOfSpecificLms
+        );
+
+        TBool IsSpecificLandmark(
+        /* IN */        TPosLmEventType aEventType
+        );
+
+        TBool IsSpecificCategory(
+        /* IN */        TPosLmEventType aEventType
+        );
+
+        /**
+        * Removes events of a specified type from the queue.
+        *
+        * @param aRemoveType A type of events to remove from the queue.
+        * @param aQueuePosition Holds the queue position where the first
+        *   occurrence of the event type was found. Set to KErrNotFound if
+        *   no events was found. Note: the event at that position was removed,
+        *   but another event may have been moved to that position.
+        */
+        void RemoveEvents(
+        /* IN */        TRemoveEventType aRemoveType,
+        /* OUT */       TInt& aQueuePosition
+        );
+
+        // By default, prohibit copy constructor
+        CPosLmEventHandler( const CPosLmEventHandler& );
+        // Prohibit assigment operator
+        CPosLmEventHandler& operator= ( const CPosLmEventHandler& );
+
+    private:    // Data
+
+        RArray<TPosLmEvent> iEventQueue;
+        RMessagePtr2 iHoldingMessage;
+
+    };
+
+#endif  // CPOSLMEVENTHANDLER_H
+
+// End of File