/*

* 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: 

*

*/

#ifndef AUDIOFETCHERDIALOG_H

#define AUDIOFETCHERDIALOG_H

// INCLUDES

#include <e32base.h>

#include <aknlists.h>

#include <AknDialog.h>

#include <coedef.h>

#include <eikcmobs.h>

#include <MediaFileTypes.hrh>

#include "audiofetcherlisthandler.h"

#include "audiofetcherfilehandler.h"

#include "audiofetcherdialogutils.h"

// FORWARD DECLARATIONS

class MMGFetchVerifier;

class CAknInputBlock;

/**

* CAudioFetcherDialog

*

* CAudioFetcherDialog provides UI for selecting audio files.

*/

NONSHARABLE_CLASS ( CAudioFetcherDialog ) : public CAknDialog,

                                             public MEikListBoxObserver,/*

                                             public MCoeForegroundObserver,*/

                                             public MEikCommandObserver,

                                             public MAudioFetcherListHandlerObserver,

                                             public MAudioFetcherFileHandlerObserver

	{

	 public:  // Constructors and destructor

		/**

		* Two-phased constructor.

		* @param reference to an array where the selected files are set

        * @param selection verifier interface

        * @param the title for the dialog

		*/

        static CAudioFetcherDialog* NewL(

            CDesCArray& aSelectedFiles, 

            MMGFetchVerifier* aVerifier,

            const TDesC& aTitle,

            TBool aMultiSelectionEnabled, 

            TMediaFileType aMediaType );

        /**

        * Destructor.

        */

        virtual ~CAudioFetcherDialog();     

	private: // Constructors

	    /**

        * Symbian 2nd phase constructor

		*/

        void ConstructL();

        /**

        * C++ default constructor.

        */

        CAudioFetcherDialog(

            CDesCArray& aSelectedFiles, MMGFetchVerifier* aVerifier, const TDesC& aTitle, 

            TBool aMultiSelectionEnabled, TMediaFileType aMediaType);

	private:

		/**

		* @ref CCoeControl::SizeChanged

		*/

		void SizeChanged();

	    /**

	    *  From the base class.

	    * Handles menu events.

	    * @param  aCommandId Command id.

	    * @return None.

	    */

	    void ProcessCommandL( TInt aCommandId );

        //void HandleGainingForeground() {};

        //void HandleLosingForeground(){};

	    /**

        * From MEikListBoxObserver, called by framework.

        * @param aListBox.

        * @param aEventType.

        * @return None

        */

        void HandleListBoxEventL( CEikListBox* aListBox, TListBoxEvent aEventType );

        /**

        * Initializes the dialog's controls before the dialog is sized and 

        * layed out.

        */

		void PreLayoutDynInitL();

        /**

         * Initializes the dialog's controls after the dialog has been sized 

         * but before it has been activated.

         */

		void PostLayoutDynInitL();

		TInt CurrentItemListIndex();

		void GetListItemText( TInt aListboxIndex, TDes& aText );

		void SetIconsL();

		void SetIconFileNameL( const TDesC& aName, TDes& aFullName );

		TInt StorageTypeIcon( TInt aListboxIndex );

		TInt MediaTypeIcon( TInt aListboxIndex );

		CGulIcon* IconL(TAknsItemID aId, const TDesC& aFileName,

		                TInt aFileIndex, TInt aFileMaskIndex);

		void UpdateListBoxL();

        /**

        * From the base class.

        * Called by framework before exiting the dialog.

        * @param aButtonId Button id.

        * @return ETrue to exit\ EFalse to not to exit.

        */

        TBool OkToExitL( TInt aButtonId );

        /**

        * From the base class.

        * Called by framework when dialog is activated.

        * @param None.

        * @return None.

        */

        void ActivateL();

        /**

        * From the base class.

        * Called by framework before menu is shown.

        * @param aResourceId Menu resource id.

        * @param aMenuPane Pointer to the menu.

        * @return None.

        */

        void  DynInitMenuPaneL(TInt aResourceId, CEikMenuPane *aMenuPane) ;

        /**

        * From the base class.

        * Called by framework for key event handling.

        * @param aKeyEvent.

        * @param aType.

        * @return Return code.

        */

        TKeyResponse OfferKeyEventL(const TKeyEvent& /*aKeyEvent*/,TEventCode /*aType*/);

        /**

        * From base class.

        * Called when UI layout changes. 

        * @param aType.

        * @return None.

        */

        void HandleResourceChange( TInt aType );

        virtual CCoeControl* ComponentControl( TInt aIndex ) const;

        virtual TInt CountComponentControls() const;

    private:   // from MAudioFetcherFileHandlerObserver

        void HandleFileEventL( TInt aEvent, TInt aError );

        TPtrC ConstructListboxItem( TInt aListboxIndex );

        TInt ListboxItemCount();

    private:

        /**

         * Query audio files from MdS

         */

        void QueryL();

        TBool HandleListSelectionL();

        static TInt CloseDialog( TAny *aObj );

        void CloseDialogWithDelayL();

    private:

	    // listbox

	    CAknSingleGraphicStyleListBox* iListBox;

	   // long buffers for listbox items

	   TBuf<128> iListboxItemText1;

	   TBuf<256> iListboxItemText2;

	    // long buffers for icon file names

	    TFileName iIconFileName;

	    // for title and icon handling

	    CStatusPaneHandler* iStatusPaneHandler;

	    TBuf<128> iDialogTitle;

    	// metadata engine wrapper

    	CAudioFetcherFileHandler* iFileHandler;

    	CAudioFetcherListHandler* iListHandler;

        // Selected items array

        // Not Own. Owned by the client

        CDesCArray& iSelectedFiles;

        MMGFetchVerifier* iVerifier;

        // is metadata databse open

        TBool iDatabaseOpen;

        /// Ref: the title

        const TDesC& iTitle;         

        HBufC* iEmptyListText;

        // Holds the status pane layout resource ID

        TInt iCurrentLayoutResId;

        TBool iMultiSelectionEnabled;

        // for closing dialog

        CIdle* iIdle;

        CAknInputBlock* iInputBlock;

        TMediaFileType iMediaType;

	};

#endif // AUDIOFETCHERDIALOG_H

// End of File