/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  

*

*/

#ifndef __CALENDARDELETEENTRY_H

#define __CALENDARDELETEENTRY_H

class CAsyncRequestObserver;

/**

 * This class provides functionality for deleting calendar entries.

*/

class CCalendarDeleteEntry : public CCalendarASyncRequest/*, public CActive*/

	{

	/**

	 * TDeleteOption enum represents the delete options.

	*/

	enum TDeleteOption

		{

		EDeleteAll = 0,

		EDeleteGUid,

		EDeleteLUid,

		EDeleteTimeRange,

		EDeleteTmRngGUid,

		EDeleteTmRngLUid

		};

	public:

		/**

		* Two-phased constructor.

		* @param CCalendarSessionInfo* a calendar session information.

		* @param aFilter* Filter object. Function takes the ownership.

		* @param MCalCallbackBase* 

		*/

		static CCalendarDeleteEntry* NewL( CCalendarSessionInfo* aSessionInfo, 

											CCalendarFilter* aFilter, 

											CAsyncRequestObserver* aAsyncRequestObserver = NULL,

											MCalCallbackBase* aNotifyCallback = NULL );

	    /**

	    * Destructor.

	    */

		virtual ~CCalendarDeleteEntry();

		/**

		* Delete Entries

		*/

		void DeleteL();

	private:

		/** 

	     * Default  constructor.

	     * @param aSessionInfo  It is an object of CCalSession Class which

	     *        represents a channel of communication between a client thread  

	     *        and the calendar Server thread .

	     * @param aNotifyCallback It is a callback notification

	    */

		CCalendarDeleteEntry( CCalendarSessionInfo* aSessionInfo, 

										CAsyncRequestObserver* aAsyncRequestObserver = NULL, 

										MCalCallbackBase* aNotifyCallback = NULL );

		void ConstructL( CCalendarFilter* aFilter );

		/** 

	     * Initializes delete option based in input filter

	    */

		void InitializeDeleteOptionL();

		/**

		* Start Deleting Entries

		*/

		void StartDeleteL();

		/**

		* Delete All Entries with in calendar

		*/

		void DeleteAllL();

		/**

		* Delete Entries based in GlobalUid/LocalUid

	     * @param aLocalUid Deletion will Local Uid based if this is true.

		*/

		void DeleteUidL( TBool aLocalUid );

		/**

		* Delete Instances based on Time Range

		*/

		void DeleteTimeRangeL();

		/**

		* Delete Instances based on Time Range and Global Uid

		*/

		void DeleteTimeRangeWithGlobalUidL();

		/**

		* Delete Instances based on Time Range and Local Uid

		*/

		void DeleteTimeRangeWithLocalUidL();

		/**

		 * Inherited from CActive class 

		*/ 

    	virtual void DoCancel();

		/**

		 * Inherited from CActive class 

		*/ 

        virtual void RunL();

		/**

		 * Activates the request and call SetActive() function

		*/ 

		void ActivateRequest(TInt aReason);

		/**

		 * Gives the result for notification request.

		*/ 

		void NotifyRequestResult(TInt aReason);

	private:

		/**

		 * Calendar server session

		 * Not own.

		*/ 

		CCalendarSessionInfo* iSessionInfo;

		/**

		 * Callback Object

		*/ 

		MCalCallbackBase* iNotifyCallback;

		/**

		 * Filter Object

		*/ 

		CCalendarFilter* iFilter;

		/**

		 * Asynchronous request observer, Used to get infromed of completion or request

		*/ 

		CAsyncRequestObserver* 	iAsyncRequestObserver;

		/**

		 * Delete option selected, derived from Filter

		*/ 

		TDeleteOption iDeleteOption;

	};

#endif __CALENDARDELETEENTRY_H