/*

* 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:  Declarations for Notepad Viewer Application UI class.

*

*/

#ifndef NOTEPADVIEWERAPPUI_H

#define NOTEPADVIEWERAPPUI_H

// INCLUDES

#include <aknappui.h>

// FORWARD DECLARATIONS

class CNotepadViewerDialog;

class CNotepadApi;

// CLASS DECLARATION

/**

* Notepad Viewer application UI class.

* 

*/

class CNotepadViewerAppUi : public CAknAppUi

    {

    public: // Constructors and destructor

        /**

        * Second phase onstructor.

        */      

        void ConstructL();

        /**

        * Destructor.

        */      

        virtual ~CNotepadViewerAppUi();

    private: // Functions from base classes

        /**

        * From CEikAppUi.

        * Takes care of command handling.

        *

        * @param aCommand command to be handled

        */

        void HandleCommandL(TInt aCommand);

        /**

        * From CEikAppUi.

        * Command line processing.

        *

        * When DocumentHandler wants to launch NpdViewer as a standalone

        * application, it use RApaLsSession::StartDocument(filename, ...).

        *

        * CEikonEnv::ConstructAppFromCommandLineL(...), at first, pass 

        * the filename information to ProcessCommandParametersL 

        * correctly. But default CEikAppUi::ProcessCommandParametersL 

        * overwrite it's reference parameter (TFileName& aDocumentName) to 

        * application's defualt document name such as "NpdViewer.ini".

        * (In EikAppUi.cpp, 

        * Application()->GetDefaultDocumentFileName(aDocumentName);

        * do this). 

        * So,  when CEikonEnv::ConstructAppFromCommandLineL(...) calls

        * CApaDocument::OpenFileL(...), the filename information from 

        * Document Handler had been lost.

        * 

        * On the other hand, when DocumentHandler wants to launch NpdViewer 

        * as a embeded application, it use CApaDocument::OpenFileL() directly 

        * and never call ProcessCommandParametersL.

        *

        * So, in order to pass a correct filename information to OpenFileL 

        * in both case, we decide to override this function.

        *

        * @param aCommand command. (ignored)

        * @param aDocumentName Filename.

        * @param aTail optional command line parampeter. (ignored)

        * @return ETrue if aDocumentName file exists.

        */

        TBool ProcessCommandParametersL(

            TApaCommand aCommand,

            TFileName& aDocumentName,

            const TDesC8& aTail);

        /**

        * From CEikAppUi.

        * Start fileviewer with specified filename.

        * Both standalone and embeded case, this function is really called 

        *

        * @param aFilename Filename to view.

        */

        void OpenFileL(const TDesC& aFilename);

	public:

        /**

        * Start fileviewer with specified file handle.

        * Both standalone and embeded case, this function is really called 

        *

        * @param aFile File handle.

        */

        void OpenFileL(RFile& aFile);

    private: // Data

        CNotepadApi* iApi; // own

        TBool iCurrentFileOpened; // To avoid reopening of same file.

    };

#endif // NOTEPADVIEWERAPPUI_H

// End of File