1 /*

     2 * Copyright (c) 2008 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 for the plugin handler.

    15 *

    16 */

    17 

    18 

    19 #ifndef MPXPLUGINHANDLEROBSERVER_H

    20 #define MPXPLUGINHANDLEROBSERVER_H

    21 

    22 // INCLUDES

    23 #include <e32std.h>

    24 

    25 /**

    26 *  Mix-in class for callback.

    27 *

    28 *  @lib mpxcommon.lib

    29 */

    30 NONSHARABLE_CLASS(MMPXPluginHandlerObserver)

    31     {

    32 public:

    33     enum TPluginHandlerEvents

    34         {

    35         EPluginAdd,             // generated after the plugin DLL is copied

    36         EPluginUpdateStart,     // generated before the plugin DLL is unloaded (if already loaded)

    37         EPluginUpdateEnd,       // generated after the new plugin version is loaded (if old version was loaded)

    38         EPluginRemove           // generated after the plugin DLL is removed but before the plugin instance is unloaded

    39         };

    40 

    41 public:

    42     /**

    43     * Indicates a change in the plugins managed by the handler.

    44     *

    45     * @since S60 3.2.3

    46     * @param aEvent event code

    47     * @param aPluginUid plugin this event is related to

    48     * @param aLoaded ETrue if the plugin is loaded, EFalse otherwise

    49     * @param aData data associated with the event, its meaning depends on the event:

    50     *          EPluginAdd - new plugin version

    51     *          EPluginUpdateStart - new plugin version

    52     *          EPluginUpdateEnd - new plugin version

    53     *          EPluginRemove - old plugin version

    54     */

    55     virtual void HandlePluginHandlerEvent(TPluginHandlerEvents aEvent, const TUid& aPluginUid,

    56         TBool aLoaded, TInt aData) = 0;

    57     };

    58 

    59 #endif // MPXPLUGINHANDLEROBSERVER_H