musicplayer_plat/music_content_publisher_plugin_api/inc/mcpplugin.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2008-2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Music Content Publisher Plugin interface definition
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*
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*/
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#ifndef C_MCPPLUGIN_H
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#define C_MCPPLUGIN_H
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#include <e32base.h>
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/**
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 * The interface class for all MCP plugins
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 * Plugins are responsible for updating data and actions to the Music Widget
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 * and Music Suite.
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 *
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 * The implementator of this interface should implement Deactivate function that 
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 * will be invoked when the plugin is preempted by another plugin.
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 *
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 * IMPORTANT NOTE: 
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 * It is recommended that the plugin does not publish data while not active.
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 * After calling Deactivate on the plugin it should change its state to
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 * not active.
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 *
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 */
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class CMCPPlugin : public CBase
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    {
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public:
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    /** 
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     * Triggers Deactivation Process.
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     * Note: This should return immediatelly.
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     *       Just a change of state variable is recommended.
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     */
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    virtual void Deactivate() = 0;
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    /** 
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     * Announces a change on the skin.
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     * Note: Plugins should republish all the skinned icons.
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     *       Called only on the active plugin, plugins are responsible to
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     *       republish all the icons when they become active.
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     */
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    virtual void SkinChanged() {};
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    };
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#endif // C_MCPPLUGIN_H