--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/meetingui/meetingrequestutils/inc/CMRUtilsGraveyardCleaner.h	Tue Feb 02 10:12:19 2010 +0200
@@ -0,0 +1,161 @@
+/*
+* 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 for cleaning up unnecessary tombstones.
+*
+*/
+
+
+
+#ifndef __CMRUTILSGRAVEYARDCLEANER_H__
+#define __CMRUTILSGRAVEYARDCLEANER_H__
+
+//  INCLUDES
+#include <e32base.h>
+#include <calprogresscallback.h>
+
+// FORWARD DECLARATIONS
+class CMRUtilsCalDbBase;
+class CCalIter;
+class CCalEntry;
+
+// CLASS DECLARATION
+
+/**
+* This class performs cleanup for tombstone database asynchronously in the
+* background. Caller doesn't need to involve this after starting the operation.
+* This class assumes that databases given are fully initialized.
+*/
+class CMRUtilsGraveyardCleaner : public CBase, public MCalProgressCallBack
+    {
+    public: // Data types
+
+        /**
+        * State of the cleaner object.
+        */
+        enum TCleanerState
+            {
+            ENotActive,
+            EResurrectedItemsCleanup,
+            ETimeLimitCleanup
+            };
+                
+    public: // Constructors and destructors
+
+
+        /**
+        * Symbian two-phased constructor.
+        * @param aNormalDb database reference
+        * @param aTombsDb database reference
+        * @return instantiated object
+        */
+        static CMRUtilsGraveyardCleaner* NewL(
+            const CMRUtilsCalDbBase& aNormalDb,
+            CMRUtilsCalDbBase& aTombsDb );        
+
+        /**
+        * Destructor.
+        */
+        ~CMRUtilsGraveyardCleaner();
+        
+    public: // New functions 
+
+        /**
+        * Starts asynchronous cleanup of tombstones which should be deleted
+        * based on given history time limit, or which have been resurrected
+        * and exist now in the normal database.
+        * @param aTimeLimitUtc older tombstones are deleted using CCalEntryView,
+        *        user should give Time::NullTTime() if no time limit is used
+        */
+        void StartIdleCleanupL( TTime aTimeLimitUtc ); 
+        
+        /**
+        * Returns current state of the cleanup object. This method mainly
+        * intended for testing purposes.     
+        * @return current state
+        */
+        TCleanerState CurrentStateL() const;
+    
+    protected: // New functions
+    
+        /**
+        * TCallback method called by the idle cleaner to perform one step.
+        * @param aCleaner object, ownership not transferred
+        * @return 1 if not finished, 0 if finished 
+        */
+        static TInt StepL( TAny* aCleaner );
+        
+        /**
+        * Helper method for performing one step of clean up task.
+        * @return 1 if not finished, 0 if finished 
+        */
+        TInt DoStepL();
+        
+        /**
+        * Helper which deletes a tombstone entry if it appears to be resurrected,
+        * i.e. it is found from the normal database as well.
+        * @param aUid specifies entry to check
+        */
+        void CleanupIfResurrectedL( const TDesC8& aUid );
+        
+    protected: // From MCalProgressCallBack
+    
+    	void Progress( TInt aPercentageCompleted );
+		
+        TBool NotifyProgress();
+        
+        void Completed( TInt aError );
+    
+    protected: // Constructors and destructors
+    
+        /**
+        * C++ default constructor.
+        * @param aNormalDb database reference
+        * @param aTombsDb database reference        
+        */
+        CMRUtilsGraveyardCleaner( const CMRUtilsCalDbBase& aNormalDb,
+                                  CMRUtilsCalDbBase& aTombsDb );
+
+        /**
+        *  Constructor, second phase.
+        */
+        void ConstructL();            
+        
+    protected: // data
+        
+        // Database reference
+        const CMRUtilsCalDbBase& iNormalDb;
+        
+        // Database reference
+        CMRUtilsCalDbBase& iTombsDb;
+        
+        // Uid of entry currently investigated
+        TPtrC8 iCurrentEntryUid;
+            
+        // State of the cleaner object
+        TCleanerState iState;
+        
+        // Time criterion for cleanup
+        TTime iTimeLimitUtc;
+        
+        // Idle cleaner, own            
+        CIdle* iIdleCleaner;   
+        
+        // Iterator for tombstone db, own
+        CCalIter* iTombsEntryIterator;        
+    };
+
+#endif // __CMRUTILSGRAVEYARDCLEANER_H__
+
+// End of File