/*

* Copyright (c) 2003 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:  Contact data container observer interface

*

*/

#ifndef MCAMAINVIEWOBSERVERPC_H

#define MCAMAINVIEWOBSERVERPC_H

#include <e32std.h>

//#include "TStorageManagerGlobals.h"

#include "TEnumsPC.h"

// CLASS DECLARATION

/**

 *  Interface for observer

 *

 *  @lib wvuiprocess.dll

 *  @since 3.0

 */

class MCAMainViewObserverPC

    {

    public: // New functions

        /**

         * Called when a contact is deleted.

         * @param aId The ID of the deleted contact

         * @param aFromPEC, ETrue, if event is coming from PEC

         */

        virtual void HandleDelete( const TDesC& aContactId ,

                                   TEnumsPC::TItem type ) = 0;

        /**

         * Called when a contact is added.

         * @param aList. List for contact that was added.

         * @param aContact The contact which was added

         * @param aFromPEC, ETrue, if event is coming from PEC

         */

        virtual void HandleAddition( TEnumsPC::TItem type,

                                     TInt aIndex ) = 0;

        /**

         * Called when a contact or list is about to change, or has been changed.

         * @param aList List that is changed. Can be NULL if contact is changed.

         * @param aContact Contact that is changed. Can be NULL if list is changed

         * @param aEventType The type of event: EStorageEventPreChange before

         * the change (contact still has the old information), or

         * EStorageEventPostChange after the change took place

         * (contact has new information)

         */

        // the itemtype is type of list item at the hand..

        // the changetype is event that has occured due to call from engine....

        virtual void HandleChange( TEnumsPC::TItem type, TInt aIndex,

                                   TEnumsPC::TChange changeType ) = 0;

        virtual void HandleWatcherEvent( const TDesC &  aString ,

                                         TEnumsPC::TOnlineStatus aOnlineStatus ) = 0;

        /**

        * Gets called when invite event occurs.

        * @param aEvent Type of event.

        * @param aUserId userid of the sender

        * @param aMessage invite message

        */

        virtual void HandleInvitationEventL( TEnumsPC::TInviteType aInviteType,

                                             const TDesC& aUserId,

                                             const TDesC& aMessage ) = 0;

        /**

         * Gets called when we received response to our invitation

         * @param aAcceptance Accepted or rejected

         * @param aUserId User Id of the response sender

         * @param aGroupName group name

         * @param aResponse response text

         */

        virtual void HandleInvitationResponse( TBool aAcceptance,

                                               const TDesC& aUserId,

                                               const TDesC& aGroupName,

                                               const TDesC& aResponse ) = 0;

        /**

        * Handles setting changes.

        * @param aChangedSettingEnum specifies the changed setting.

        */

        virtual void HandleSettingsChangeL( TInt aChangedSettingEnum ) = 0;

        /**

         * Virtual destructor

         */

        virtual ~MCAMainViewObserverPC() {};

    };

#endif      // MCAMAINVIEWOBSERVERPC_H

// End of File