/*

* Copyright (c) 2002 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: 

*     Declares a wait note wrapper.

*

*/

#ifndef CAknWaitNoteWrapper_H

#define CAknWaitNoteWrapper_H

// INCLUDES

#include <e32base.h>

#include <AknProgressDialog.h>

// CONSTANTS

class CAknWaitDialog;

// CLASS DECLARATION

/**

 * Abstract process divided into steps.

 */

class MAknBackgroundProcess

    {

    public: // interface

        /**

         * Completes one cycle of the process.

         */

        virtual void StepL()=0;

        /**

         * Return true when the process is done.

         */

        virtual TBool IsProcessDone() const =0;

        /**

         * Callback when the process is finished.

         */

        virtual void ProcessFinished() { }

        /**

        * Callback when the dialog is dismissed

        */

        virtual void DialogDismissedL(TInt /*aButtonId*/) { }

        /**

         * Handles error occurred in StepL

         * @param aError error code that occurred

         * @return translated error code. If this is != KErrNone process will be stopped.

         */

        virtual TInt CycleError(TInt aError) { return aError; }

    };

/**

 * CAknWaitNoteWrapper class.

 */

NONSHARABLE_CLASS(CAknWaitNoteWrapper) : private CActive, private MProgressDialogCallback

    {

    public: // constructor and destructor

        IMPORT_C static CAknWaitNoteWrapper* NewL();

        IMPORT_C ~CAknWaitNoteWrapper();

    public: // interface

        /**

         * Executes the wait note and calls the cycle callback.

		 *

		 * @param aResId                Resource id for the dialog.

         * @param aBackgroundProcess    Callback interface.

         * @param aVisibilityDelayOff   If set ETrue the dialog will be visible

         *                              immediality. Use only when the length of

         *                              the process is ALWAYS over 1.5 seconds.

         * @param aTone                 Will be played when the dialog is shown.

         *

		 * @return true if success, false if wait note was canceled.

         */

        IMPORT_C TBool ExecuteL(TInt aResId, MAknBackgroundProcess& aBackgroundProcess,

            TBool aVisibilityDelayOff = EFalse, const CAknNoteDialog::TTone& aTone = CAknNoteDialog::ENoTone); 

		 /**

         * Executes the wait note and calls the cycle callback.

		 * Dynamically set note prompt.

		 *

		 * @param aResId                Resource id for the dialog.

         * @param aBackgroundProcess    Callback interface.

         * @param aPrompt               Note Prompt

		 * @param aVisibilityDelayOff   If set ETrue the dialog will be visible

         *                              immediality. Use only when the length of

         *                              the process is ALWAYS over 1.5 seconds.

         * @param aTone                 Will be played when the dialog is shown.

         *

		 * @return true if success, false if wait note was canceled.

         */

        IMPORT_C TBool ExecuteL(TInt aResId, MAknBackgroundProcess& aBackgroundProcess,

			const TDesC& aPrompt, TBool aVisibilityDelayOff = EFalse, const CAknNoteDialog::TTone& aTone = CAknNoteDialog::ENoTone); 

		/**

		* Return pointer to dialog

		*/

		inline CAknWaitDialog* WaitDialog() const; 

    private: // from CActive

	    void DoCancel();

	    void RunL();

        TInt RunError(TInt aError);

    private:  // from MProgressDialogCallback

        void DialogDismissedL(TInt aButtonId);

    private: // implementation

        class CWaitNote;

        CAknWaitNoteWrapper();

        void NextCycle();

		TBool NextCycleAndReturnL();

		void CreateDialogL(TBool aVisibilityDelayOff, const CAknNoteDialog::TTone& aTone);

    private: // data members

        /// Ref: callback to client

        MAknBackgroundProcess* iBackgroundProcess;

        /// Own: error code from RunL

        TInt iRunError;

        /// Own: wait note dialog

        CAknWaitDialog* iWaitDialog;

        /// Own: is dialog dismissed

        TBool iIsDialogCanceled;

		/// Own: scheduler wait object, safe to use as direct member data.

		CActiveSchedulerWait iWait;

		///Event generator for this AO (interval is zero seconds)

		RTimer iTimer;

    };

CAknWaitDialog* CAknWaitNoteWrapper::WaitDialog() const { return iWaitDialog;}

#endif

// End of File