/*

* 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:  This dialog is used for Attachment handling.

*

*/

#ifndef MSGMAILVIEWERATTACHMENTS_H

#define MSGMAILVIEWERATTACHMENTS_H

//  INCLUDES

#include <MsgViewAttachmentsDialog.h>

#include <msvapi.h> // MMsvSessionObserver

#include "MMsgMailAttachmentDialogObserver.h"

// FORWARD DECLARATIONS

class CMsgMailViewerDocument;

// CLASS DECLARATION

/**

*  Dialog for attachments.

*  Mail attachments are handled from this dialog.

*/

class CMsgMailViewerAttachmentsDlg :public CMsgViewAttachmentsDialog, 

    public MMsvSessionObserver

    {

    public:  // Constructors and destructor

        /**

        * NewL

        * @param aTitle Dialog title text

        * @param aAttachmentModel a reference to attachment model

        * @param aDocument a reference to app document.

        */

        static CMsgMailViewerAttachmentsDlg* NewL(

        	TDesC& aTitle,

            CMsgAttachmentModel& aAttachmentModel, 

            CMsgMailViewerDocument& aDocument,

            MMsgMailAttachmentDialogObserver& aDlgObserver

            );

        /**

        * Destructor

        */

        ~CMsgMailViewerAttachmentsDlg();

        /**

        * NotifySizeChanged, calls SizeChanged() method of

        * dialog's listbox

        * 

        */

        void NotifySizeChanged();

        /**

        * Updates all attachments fetched flags

        * in attachment model.

        * 

        */

        void UpdateAttachmentsFetchFlags();

        /**

        * From MEikListBoxObserverClass

        */

        void HandleListBoxEventL( 

            CEikListBox* aListBox, TListBoxEvent aEventType );

        /**

        * Updates list of attatchments if attatchment 

        * dialog is opened before all attatchments 

        * are loaded.

        */

        void UpdateAttatchmentListL();

    private: // Implementation

        void UpdateChangedAttachmentsL(

            const CMsvEntrySelection& aChangedEntries );

		void FetchRemoteAttachmentL( TInt aIndex );

        void UpdateModelInfoL( TInt aIndex );

        void OpenAttachmentL();

        void DoFetchOrOpenL( TInt aIndex );

        void DoProcessCommandL( TInt aCommandId );

        void DoSendViaL();

        void PurgeAttachmentL( TInt aIndex );

        TBool CanRemoveAttachment( CMsgAttachmentInfo& aInfo );

        void SetMiddleSoftKeyLabelL( 

            TInt aResourceId, 

            TInt aCommandId );

        void UpdateMiddleSoftKeyL( TInt aIndex );   

    private: // Constructor

        CMsgMailViewerAttachmentsDlg(

            TDesC& aTitle,

            CMsgAttachmentModel& aAttachmentModel, 

            CMsgMailViewerDocument& aDocument,

            MMsgMailAttachmentDialogObserver& aDlgObserver );

        /**

        * 2nd phase constructor

        */

        void ConstructL();

    private: // Functions from base classes

        /// from CAknDialog

        void DynInitMenuPaneL(TInt aMenuId, CEikMenuPane* aMenuPane);

        /// From CCoeControl

        TKeyResponse OfferKeyEventL(

            const TKeyEvent& aKeyEvent,TEventCode aType);

        /// from CAknDialog

        void ProcessCommandL(TInt aCommandId);

        /// From CCoeControl

		void GetHelpContext( TCoeHelpContext& aContext) const;

        /// From MMsvSessionObserver

        void HandleSessionEventL(TMsvSessionEvent aEvent, 

            TAny* aArg1, TAny* aArg2, TAny* aArg3);

        //From CEikDialog

        TBool OkToExitL(TInt aButtonId);

    private:    // Data

        /**

        * A reference to the application Document.

        */

        CMsgMailViewerDocument& iDocument;

        /// Internal status flags

        TInt iFlags;

        /**

        * Ref: application UI object.

        */

        MMsgMailAttachmentDialogObserver& iDlgObserver;

    };

#endif      // MSGMAILVIEWATTACHMENTS_H

// End of File