1 /*

     2 * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Observer interface to handle chat container changes.

    15 *

    16 */

    17 

    18 

    19 #ifndef __MCACHATOBSERVER_H__

    20 #define __MCACHATOBSERVER_H__

    21 

    22 //  INCLUDES

    23 #include <e32def.h>

    24 

    25 //	FORWARD CLASS DECLERATIONS

    26 class MCAMessage;

    27 

    28 // CLASS DECLARATION

    29 

    30 /**

    31  *  Observer interface to handle messages container changes.

    32  *

    33  *  @lib CAEngine.dll

    34  *  @since 3.0

    35  */

    36 class MCAChatObserver

    37     {

    38 

    39     public: // Definitions

    40 

    41         /**

    42          * Events for observer to handle.

    43          */

    44         enum TChatEventType

    45             {

    46             EGroupListChanged,

    47             EChatListChanged,

    48             ESendListChanged,

    49             EUnreadCountChanged, // Happens with new message and when messages are read.

    50             EMemoryLow,

    51             EEventNotSpecified

    52             };

    53 

    54     public: // Interface

    55 

    56         /**

    57          * Handle events.

    58          * @param aEvent Event to handle.

    59          * @param aMessage, Event occurred because of message

    60          */

    61         virtual void HandleChatEvent( TChatEventType aEvent, MCAMessage* aMessage = NULL ) = 0;

    62 

    63     protected: // For protection.

    64 

    65         /**

    66          * Destructor

    67          */

    68         virtual ~MCAChatObserver() {}

    69     };

    70 

    71 #endif      // __MCACHATOBSERVER_H__

    72 

    73 // End of File