/*

* Copyright (c) 2009 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: Attachment fetch utility class for event viewers and editors

*

*/

#ifndef CMRATTACHMENTUI_H

#define CMRATTACHMENTUI_H

// INCLUDES

#include <e32base.h>

#include <f32file.h> // RFs

#include <mediafiletypes.hrh> // TMediaFileType

#include <aknprogressdialog.h> // MProgressDialogCallback

#include <mmgfetchverifier.h>

#include <maknfileselectionobserver.h>

// FORWARD DECLARATIONS

class MESMRCalEntry;

class CMRAttachmentProgressInfo;

class CMRFileManager;

class CMRGrid;

// CLASS DECLARATIONS

/**

 * Observer for the attachment operation

 */

class MMRAttachmentUiObserver

	{

	public:

		virtual void AttachmentOperationCompleted( MDesC16Array& aArray ) = 0;

	protected:

		virtual ~MMRAttachmentUiObserver() { }

	};

/**

 * Class for attachment operation results

 */

class TAttachmentOpResult

	{

	public:

		inline TAttachmentOpResult() : iFiles( NULL ){}

	public:

		MDesC16Array* iFiles;

	};

/**

 * Facade class for the attachment related ui operations

 */

NONSHARABLE_CLASS( CMRAttachmentUi ): public CBase, public MProgressDialogCallback, 

                         public MMGFetchVerifier, public MAknFileSelectionObserver

	{

	public:

		/**

		 * Static c'tor

		 */

		IMPORT_C static CMRAttachmentUi* NewL();

		/**

		 * D'tor

		 */

		IMPORT_C ~CMRAttachmentUi();

	public: // Interface

		/**

		 * Launches Attachment Fetch UI

		 * Works synchronously

		 * @param aEntry Entry that will updated with attachments

		 * @return System wide error code

		 */

		IMPORT_C TInt LaunchFetchUi( MESMRCalEntry& aEntry );

		/**

		 * Launches Attachment Fetch UI

		 * Works synchronously

		 * @param aEntry Entry which attachments will be listed.

		 * 					Attachments can be added by user also.

		 * @return System wide error code

		 */

		IMPORT_C TInt LaunchViewerUi( MESMRCalEntry& aEntry );

		/**

		 * Add observer

		 * @param aObserver Observer for attachment process

		 */

		IMPORT_C void SetObserver( MMRAttachmentUiObserver& aObserver );

		IMPORT_C TAttachmentOpResult LatestOperationResult();

	public: // From MProgressDialogCallback

		void DialogDismissedL( TInt aButtonId );

	public: // From MMGFetchVerifier

	    TBool VerifySelectionL( const MDesCArray* aSelectedFiles );

	public: // From MAknFileSelectionObserver

	    TBool OkToExitL( const TDesC& aDriveAndPath, const TEntry& aEntry );

	private: // Implementation

		CMRAttachmentUi();

		void ConstructL();

		void DoLaunchFetchUiL();

		void DoLaunchViewerUiL();

		TMediaFileType ResolveAttachmentTypeL();

		void StartCopyOpL();

		void UpdateEntryL();

		TBool FileDrmProtectedL( RFile& aFile );

		TBool IsDuplicateNameL( const TDesC& aSelectedFile );

	private: // Data

		/// Ref: Currently active entry

		MESMRCalEntry* iEntry;

		/// Own: file server sesssion handle

		RFs iFsSession;

		/// Own: Progress bar

		CMRAttachmentProgressInfo* iProgress;

		/// Own: File count for files to be copied

		TInt iFileCount;

		/// Own: Array of files to be copied

		CDesCArrayFlat* iFilesToCopy;

		/// Own: Array of files to be added without copy

		CDesCArrayFlat* iFilesToAdd;

		/// Own: File copy manager

		CMRFileManager* iManager;

		/// Ref: Attachment ui process observer reference

		MMRAttachmentUiObserver* iObserver;

	};

#endif // CMRATTACHMENTUI_H

// End of file