/*

* Copyright (c) 2002-2006 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:  A helper class for making correctness and DRM checkups to the

*                tones to be used as alert tones.

*

*/

#ifndef CPROENGTONEHANDLER_H

#define CPROENGTONEHANDLER_H

//  INCLUDES

#include <f32file.h> // CBase, RFs

#include <apmstd.h> // KMaxDataTypeLength

#include <data_caging_path_literals.hrh>

#include <ProfileEng.hrh> // TProfileSettingId

// FORWARD DECLARATIONS

class DRMCommon;

class CDRMHelper;

class CProEngMediaVariation;

// CLASS DECLARATION

/**

*  A helper class for making correctness and DRM checkups to the

*  tones to be used as alert tones.

*  Registers DRM protected tones as automated content

*  and removes old content from automated content list.

*  Shows a content activation query and other DRM related

*  notes if necessary.

*

*  @lib ProfileEngine.lib

*  @since Series 60 3.1

*/

NONSHARABLE_CLASS( CProEngToneHandler ) : public CBase

    {

    public:  // Constructors and destructor

        // Two-phased constructors.

        static CProEngToneHandler* NewL();

        static CProEngToneHandler* NewLC();

        // Destructor.

        ~CProEngToneHandler();

    public: // New functions

        /**

         * Checks that the given tone file exists and that it is

         * a legal file to be used as a ringing or alert tone.

         * @since 3.1

         * @param aFileName Full path and filename of the file to be checked.

         * @param aToneType Type of tone to check, see: ProfileEng.hrh

         * @return KErrNone if the file can be used as a ringing or alert tone,

         *         KErrNotFound if the file cannot be found,

         *         KErrNotSupported if a file is of an unsupported type or

         *         KErrPermissionDenied if the file is not allowed

         *         to be used as a ringing or alert tone.

         *         KErrGeneral if DRM rights are insufficient.

		 *		   KErrArgument if the file is DRM protected

		 *		   audio/mp4 and those are not allowed as ringingtones.

		 *         KErrTooBig if file size exceeded file size limit.

         */

        TInt CheckToneFileL( const TDesC& aFileName, TInt aToneType );

        /**

         * Adds the file to automated content list and removes the old file

         * from automated content list.

         * Called by CProEngProfileImpl::CommitChangeL after the changes has

         * been committed in the underlying Profiles Engine.

         * @since 3.1

         * @param aSettingId setting id which identifies which tone (ringing

         *                   tone, sms tone etc.) this automated content

         *                   handling operation concerns.

         * @param aFileName Full path and filename of the tone to be used

         *                  as the new ringing or alert tone.

         * @param aOldFileName Full path and filename of the previous tone used

         *                  as the ringing or alert tone.

         * @return KErrNone, if succesful, otherwise a system-wide error code.

         */

        TInt HandleAutomatedContent( TProfileSettingId aSettingId,

                                     const TDesC& aFileName,

                                     const TDesC& aOldFileName);

    protected:  // New functions

        /**

         * Helper function for CheckToneFileL. This function does most of the

         * actual checking.

         * @since 3.1

         * @param aFileName Full path and filename of the file to be checked.

         * @param aToneType Type of tone to check, see: ProfileEng.hrh

         * @return KErrNone if the file can be used as a ringing or alert tone,

         *         KErrNotFound if the file cannot be found,

         *         KErrNotSupported if a file is of an unsupported type or

         *         KErrPermissionDenied if the file is not allowed

         *         to be used as a ringing or alert tone.

         *         KErrGeneral if DRM rights are insufficient.

		 *		   KErrArgument if the file is DRM protected

		 *		   audio/mp4 and those are not allowed as ringingtones.

		 *         KErrTooBig if file size exceeded file size limit.

         */

        TInt DoCheckToneFileL( const TDesC& aFileName, TInt aToneType );

        /**

         * Checks if a DRM protected file can be used as a ringing or alert tone.

         * @since 3.1

         * @param aFileName Full path and filename of the file to be checked.

         * @return KErrNone if the file can be used as a ringing or alert tone or

         *         KErrGeneral if DRM rights are insufficient.

         */

        TInt CheckProtectedFileL( const TDesC& aFileName );

        /**

         * Tells whether a file can be registered as automated content or not.

         * If DRM is not supported, returns always EFalse.

         * @since 3.1

         * @param aFileName File to be registered as automated content.

         * @return Returns ETrue if aFileName can be set as automated content.

         *         Returns EFalse if can't or DRM is not supported.

         */

        TBool CanSetAutomated( const TDesC& aFileName );

        /**

         * Asks user if he/she wants to activate unactivated content.

         * Shows a query. Does nothing if DRM is not supported.

         * @since 3.1

         * @param aFileName File to be registered as automated content.

         * @return Returns KErrCancel if user cancels the query.

         */

        TInt AskAutomated( const TDesC& aFileName );

        /**

         * Registers a file to automated content list without any queries.

         * Errors are omitted. Does nothing if DRM is not supported.

         * @since 3.1

         * @param aSettingId setting id which identifies which tone (ringing

         *                   tone, sms tone etc.) this automated content

         *                   setting operation concerns.

         * @param aFileName File to be registered as automated content.

         * @return KErrNone, if succesful, otherwise a system-wide error code.

         */

        TInt SetAutomated( TProfileSettingId aSettingId,

                           const TDesC& aFileName );

        /**

         * Removes a file from automated content list.

         * Errors are omitted. Does nothing if DRM is not supported.

         * @since 3.1

         * @param aFileName File to be removed from automated content list.

         */

        void RemoveAutomated( const TDesC& aFileName );

        /**

         * Returns whether a file is protected content or not.

         * Returns always EFalse if DRM is not supported.

         * @since 3.1

         * @param aFileName The file name.

         * @return Returns whether the file is protected content or not.

         */

        TBool IsProtected( const TDesC& aFileName ) const;

        /**

         * Returns whether a file is protected content or not.

         * Returns always EFalse if DRM is not supported.

         * @since 3.1

         * @param aFileName The file name.

         * @return Returns whether the file is protected content or not.

         */

        TBool IsProtectedL( const TDesC& aFileName ) const;

		/**

         * Displays an error note.

         * @since 3.1

         * @param aResourceId Resource ID to a TBUF resource.

         */

        void ShowErrorNoteL( TInt aResourceId );

        /**

         * Checks if tone file's size is larger than the size limit.

         * @since 3.1

         * @param aFileName The path to the file.

         * @return KErrNone   if the file can be used as a ringing tone.

         *         KErrTooBig if the file size limit is exceeded.

         */

        TInt CheckFileSizeLimit( const TDesC& aFileName ) const;

        /**

         * Checks if tone file's size is larger than the size limit.

         * @since 3.1

         * @return KErrNone   if the file can be used as a ringing tone.

         *         KErrTooBig if the file size limit is exceeded.

         */

        TInt CheckToneFileSize( const TDesC& aFile, TInt aSizeLimitKB ) const;

        /**

         * Reads tone file size limit from cenrep.

         * @since 3.1

         * @return leaves on error

         */

        void GetMaxToneFileSizeL( TInt& aMaxSizeKB ) const;

    private:

        /// Default constructor

        CProEngToneHandler();

        /// 2nd phase constructor

        void ConstructL();

        /// Constructor for the DRM objects

        void DrmConstructL();

        /// Destructor for the DRM objects

        void ReleaseDrm();

        /// Called by SetAutomated

        TInt SetAutomatedL( TProfileSettingId aSettingId,

                           const TDesC& aFileName );

    private:    // Data

        /// Owns: DRM Helper client.

        CDRMHelper* iDrmHelper;

        /// Owns: DRM Common client

        DRMCommon* iDrmCommon;

        /// File Server client.

        RFs iFs;

        /// Mime-type handling:

        CProEngMediaVariation* iMediaVariation;

        /// voice call file size limit

        TInt iToneFileSizeLimitKB;

    };

#endif      // CPROENGTONEHANDLER_H

// End of File