1 /*

     2 * Copyright (c) 2006 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:  plugin monitor observer

    15 *

    16 */

    17 

    18 

    19 #ifndef MMPXPLUGINMONITOROBSERVER_H

    20 #define MMPXPLUGINMONITOROBSERVER_H

    21 

    22 /**

    23 *  Observer interface for a plugin monitor.

    24 *

    25 *  @lib mpxcommon.lib

    26 */

    27 NONSHARABLE_CLASS(MMPXPluginMonitorObserver)

    28     {

    29     public:

    30 

    31         /**

    32         *  Callback whenever there is a change in loaded plugins. This is

    33         *  called from CMPXPluginMonitor::RunL and should not be a long

    34         *  running task.

    35         *

    36         *  @since S60 3.2.3

    37         */

    38         virtual void PluginsChangedL() = 0;

    39 

    40         /**

    41         *  Indicates that a plugin should be unloaded if it is loaded by the observer.

    42         *  This call is made when a plugin update is detected by a plugin handler and

    43         *  after all old plugin instances are unloaded the plugin handler can load the

    44         *  new plugin version. All plugin handlers should maintain the reference count

    45         *  for the plugin, as they will get a PluginsChangedL notification following one

    46         *  or multiple HandlePluginUnload calls and they will need to know what plugins

    47         *  were loaded before the update so they can be reloaded.

    48         *

    49         *  @since S60 3.2.3

    50         */

    51         virtual void HandlePluginUnload(const TUid& aPluginUid) = 0;

    52     };

    53 

    54 #endif      // MMPXPLUGINMONITOROBSERVER_H

    55 

    56