/*

* 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:  Interface for service request

*

*/

#ifndef CSERVICEREQUEST_H

#define CSERVICEREQUEST_H

//  INCLUDES

#include <e32std.h>

#include <e32base.h>

#include <AknProgressDialog.h> 

// FORWARD DECLARATIONS

class MServiceRequestObserver;

class CAknWaitDialog;

class RConeResourceLoader;

// CLASS DECLARATION

/**

*  Interface for service request

*

* -Create instance by calling the static NewL method. User must implement the

*  observer interface MServiceRequestObserver. Cancelling the wait note is 

*  informed through this API.

*

*  iServiceRequest = CServiceRequest::NewL( *this );

*

*

* -The instance can be deleted at any time and all notes are dismissed.

*

*  delete iServiceRequest;

*

*

* -The wait note can be launched by calling StartL function:

*

*  iServiceRequest->StartL();

*

*  By default the text "Requesting" is used, but the user may give the text

*  as a parameter:

*

*  iServiceRequest->StartL( _L("Please wait...") );

*

*  Call to the StartL function will delete own notes visible at the call time.

*

*

* -Wait note can deleteted by calling the ShowCompletionNoteL function. This removes

*  all own notes. If the user wants to show a completion note for the request,

*  the parameter aShowNote must be set to ETrue. Creation of a new note may leave.

*  By deafult the Supplementary Service UI specification texts and note types are

*  used. The user may override some parameters, like note type and text. By default,

*  the error code is converted into note, e.g.:

*      KErrNone, Global confirmation note "Done"

*      KErrCancel, Local information note "Request not confirmed"

*      KErrAccessDenied, Global information note "Not allowed"

*  and so on.

*

*

*

*  @lib ServiceRequest.lib

*  @since 1.2

*/

class CServiceRequest : public CActive, public MProgressDialogCallback

    {

    public:  // Constructors and destructor

        // Used note types

        enum TSerqNoteType

            {

            ESerqDefault,

            ESerqLocalInformationNote,

            ESerqLocalConfirmationNote,

            ESerqGlobalInformationNote,

            ESerqGlobalErrorNote,

            ESerqGlobalConfirmationNote

            };

        /**

        * Two-phased constructor.

        * @param aObserver Oberver to inform cancelling.

        * @return New CServiceRequest object.

        */

        IMPORT_C static CServiceRequest* NewL( MServiceRequestObserver& aObserver );

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CServiceRequest();

    public: // New functions

        /**

        * Starts a wait note.

        * @since 1.2

        * @param aText "Requesting" text is used, if this descriptor's

        *              lenght is zero.

        */

        IMPORT_C void StartL( const TDesC& aText = KNullDesC() );

        /**

        * Removes wait note and shows new note if wanted.

        * If aShowNote = EFalse, this function won't leave!

        * Removal of the wait note is guaranteed in leave cases also.

        * @since 1.2

        * @param aShowNote ETrue: a note is shown 

        *                  EFalse: no additional note is shown

        * @param aError Used in default notes. The default note type and used

        *               text is decided based on this value. These vales are

        *               overridden if note type or used text is geven as a

        *               parameter.

        * @param aNoteType Type of the note. If EDefault is used, then the

        *                  aError parameter is checked.

        * @param aText Given text. If lenght is zero, aError parameter is checked.

        */

        IMPORT_C void ShowCompletionNoteL( 

            TBool aShowNote = ETrue,

            TInt aError = KErrNone,

            TSerqNoteType aNoteType = ESerqDefault,

            const TDesC& aText = KNullDesC() );

    protected: // From baseclasses

        // From MProgressDialogCallback

        void DialogDismissedL( TInt aButtonId );

        // From CActive

        void RunL();

        // From CActive

        void DoCancel();

        /**

        * From CActive

        * @param aError

        * @return TInt

        */

        TInt RunError(TInt aError);

    private:

        /**

        * C++ default constructor.

        */

        CServiceRequest( MServiceRequestObserver& aObserver );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * Zeroes data members

        */

        void Reset();

        /**

        * Gets default note implementation for give error value.

        */

        static void GetDefaultNote( 

            const TInt aError , 

            TSerqNoteType& aNoteType , 

            TInt& aResourceId );

        /**

        * Launches given note. Text is fetched from iNoteText.

        */

        void LaunchNoteL( const TSerqNoteType aNoteType);

    private:    // Data

        // Service request observer

        MServiceRequestObserver& iObserver;

        // Requesting wait note:

        CAknWaitDialog* iRequestingNote;

        // Resource loader

        RConeResourceLoader* iResourceLoader;

        // Text for note

        HBufC* iNoteText;

        // Enables instance deletion in call back.

        TBool* iDestroyed;

        // Reserved pointer for future extension

        TAny* iReserved;

    };

#endif      // CSERVICEREQUEST_H   

// End of File