/*
* 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: Media Fetch plug-in for audio files
*
*/

#ifndef AUDIOFETCHER_H
#define AUDIOFETCHER_H


// INCLUDES
#include <badesca.h>
#include <f32file.h>
#include <mediafetchimplementation.h>
#include <MMGFetchCanceler.h> // MMGFetchCanceler


// CLASS DECLARATION

/**
 *  Media Fetch plug-in for audio files
 *
 *  Implements the Media Fetch Implementation API
 *
 *  @lib AudioFetcher.lib
 *  @since S60 5.0
 */
NONSHARABLE_CLASS( CAudioFetcher ) :	public CMediaFetchImplementation,
										public MMGFetchCanceler 
                                                                                  														
	{
	
	public: //constructor and desctructor

		/**
		* Two-phased constructor.
		*
		* @since 5.0
		* @return Pointer to newly created object.
		*/
		static CAudioFetcher* NewL();
		
		/**
		* Destructor.
		*/
		virtual ~CAudioFetcher();
		
	protected:	// from CMediaFetchImplementation

		/**
		* By default fetcher is single selection fetcher.
		* If multi-selection is enabled then plug-in should display a
		* multi-selection fetcher and allow user to select several items.
		* @param aMultiSelect if ETrue then multiselection fetcher is enabled
		*/
		void SetMultiSelectionL( TBool aMultiSelect );

		/**
		* Not in requirement
		* @param aMimeTypes plug-in should show only files with given Mime types
		*/
		void SetMimeTypesL( const MDesCArray& aMimeTypes );

		/**
		* Plug-in should use given text as selection key (SK1) label
		* @param aSelectionSoftkey Custom selection softkey label
		*/
		void SetSelectionSoftkeyL( const TDesC& aSelectionSoftkey );

		/**
		* Plug-in should use given text as heading
		* @param aTitle Custom title text for fetcher
		*/
		void SetHeadingL( const TDesC& aTitle );

		/**
		* Plug-in should call this interface before selection is done.
		* if MMGFetchVerifier::VerifySelectionL() returns ETrue
		* then the user's selection should be accepted and the fetcher
		* closed. If EFalse is returned then user should change the current
		* selection before it can be accepted and the fetcher closed.
		* @param aVerifier See MMGFetchVerifier.h
		*/
		void SetVerifierL( MMGFetchVerifier& aVerifier );

		/**
		* Plug-in should return canceler interface.
		* @param aCanceler See MMGFetchCanceler.h
		*/
		void GetCancelerL( MMGFetchCanceler*& aCanceler );

		/**
		* Plug-in should launch fetcher popup for given media type.
		* @param aSelectedFiles plug-in appends selected files to this array
		* @param aMediaType plug-in should display only files with this media type
		* return ETrue if user selected file(s), EFalse if use cancelled.
		*/
		TBool LaunchL( CDesCArray& aSelectedFiles, TMediaFileType aMediaType );
    

	private : // Constructor and desctructor  
	
		/**
		* C++ default constructor.
		*/
		CAudioFetcher();
		 
		/**
		* By default Symbian 2nd phase constructor is private.
		*/
		void ConstructL();

	private: // New Functions
	    
	    /**
	     * Gets the resource filename
	     */
	    void GetResourceFilenameL( TFileName& aResFile );

		/** 
		* @return view title when fetcher is opened for selecting audio
		*/
		HBufC* TitleForAudioFetcherL() const;
		
		/**
		 * @return view title when fetcher is opened for selecting any media files
		 */
		HBufC* TitleForAnyMediaFileFetcherL() const;

		/** 
		* @param aSingleSelectionTitleResourceId Resource id for view title when 
		*                                        single selection is active
		* @param aMultiSelectionTitleResourceId Resource id for view title when 
		*                                       multiselection is active
		* @return view title depending whether fetcher is in multiselection or 
		*         single selection mode, and whether client has defined the title
		*/
		HBufC* TitleL( TInt aSingleSelectionTitleResourceId ) const;   
        
		
	private: // From MMGFetchCanceler

		/**
		* @see MMGFetchCanceler
		*/
 		void CancelFetcherL();
 
	private: // Data

		// Resource offset
		TInt   iResourceOffset;
        
		// media type   
		TMediaFileType iMediaType;
	
		TBool iIsMultiSelection;

		/**
		* Left softkey label
		* Own.
		*/
		HBufC* iSelectionSoftkey;

		/**
		* Popup heading text
		* Own.
		*/
		HBufC* iTitle;
   
		/**
		* Verifier
		*/
		MMGFetchVerifier* iVerifier;
		};

#endif // AUDIOFETCHER_H

// End of File