musicplayer_plat/music_content_publisher_plugin_api/inc/mcppluginobserver.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:  Manages MCP plugins, and content publishing.
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*
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*/
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#ifndef M_MCPPLUGINOBSERVER_H
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#define M_MCPPLUGINOBSERVER_H
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class CLiwDefaultMap;
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class CMCPPlugin;
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class TAknsItemID;
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/**
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 * Music Widget and Music Suite Image Destinations.
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 * 
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 * 9.1 Music Widget has two panels, The left panel contains an image:
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 * TMCPImageDestination:EMusicWidgetImage1.
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 * If we publish an empty image here the default icon will be displayed.
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 * The right panel contains a toolbar with 3 buttons:
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 * TMCPImageDestination:EMusicWidgetToolbarB1, 
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 * TMCPImageDestination:EMusicWidgetToolbarB2,
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 * TMCPImageDestination:EMusicWidgetToolbarB3.
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 * 
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 * 9.1 Music Suite has a top row that displays information about the current
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 * playing and last played. This row contains an image:
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 * TMCPImageDestination:EMusicMenuMusicInfoImage1
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 */
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enum TMCPImageDestination
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    {
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     EMusicWidgetImage1 = 1000
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     ,EMusicWidgetToolbarB1
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     ,EMusicWidgetToolbarB2
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     ,EMusicWidgetToolbarB3
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     ,EMusicMenuMusicInfoImage1 = 1100
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    };
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/**
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 * Music Widget and Music Suite Text Destinations.
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 * 
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 * 9.1 Music Widget has two panels, The right panel contains two text items:
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 * TMCPTextDestination:EMusicWidgetText1, 
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 * TMCPTextDestination:EMusicWidgetDefaultText.
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 * If we publish a EMusicWidgetDefaultText the toolbar will not be displayed.
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 * To show the toolbar and the text information row : EMusicWidgetText1 we 
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 * should publish empty text to the EMusicWidgetDefaultText
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 * 
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 * 9.1 Music Suite has a top row that displays information about the current
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 * playing and last played. This row contains two lines:
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 * TMCPTextDestination:EMusicMenuMusicInfoLine1
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 * TMCPTextDestination:EMusicMenuMusicInfoLine2
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 */
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enum TMCPTextDestination
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    {
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     EMusicWidgetText1 = 2000
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     ,EMusicWidgetDefaultText
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     ,EMusicMenuMusicInfoLine1 = 2100
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     ,EMusicMenuMusicInfoLine2
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    };
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/**
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 * Music Widget and Music Suite Trigger Destinations.
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 * 
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 * 9.1 Music Widget has two panels, The left panel contains an image where we
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 * can install an action: 
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 * TMCPTriggerDestination:EMusicWidgetTrigger1
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 * When the toolbar is hiden because there is a default text the panel
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 * functions as a button where we can install:
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 * TMCPTriggerDestination:EMusicWidgetTrigger2
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 * When there is no default text on the right panel it contains a toolbar with
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 * 3 buttons where we can install the following actions:
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 * TMCPTriggerDestination:EMusicWidgetTB1Trigger, 
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 * TMCPTriggerDestination:EMusicWidgetTB2Trigger,
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 * TMCPTriggerDestination:EMusicWidgetTB3Trigger.
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 * 
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 * 9.1 Music Suite has a top row that displays information about the current
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 * playing and last played, when this item is selected the following action
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 * will be triggered:
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 * TMCPTriggerDestination:EMusicMenuMusicInfoTrigger
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 */
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enum TMCPTriggerDestination
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    {
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     EMusicWidgetTrigger1 = 3000
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     ,EMusicWidgetTrigger2
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     ,EMusicWidgetTB1Trigger
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     ,EMusicWidgetTB2Trigger
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     ,EMusicWidgetTB3Trigger
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     ,EMusicMenuMusicInfoTrigger =3100
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    };
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/**
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 *  Observer interface, to be implemented by the Music Content Publisher.
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 *  This interface is to be used to inform the music content publisher of
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 *  changes on the plugin that need to be propagated to the Music Widget UI
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 *  or the Music suite UI. 
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 *  @since S60 5.0
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 */
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class MMCPPluginObserver
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    {
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public:
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    /**
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     * Called when an image needs to be updated.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     * @param aDestination Where the image is to be placed.
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     * @param aImagePath Source path of the Image.
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     */
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    virtual void PublishImageL(CMCPPlugin* aPlugin,
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            TMCPImageDestination aDestination, 
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            const TDesC& aImagePath) = 0;
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    /**
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     * Called when an image needs to be updated.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     * @param aDestination Where the image is to be placed.
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     * @param aBitmapHandle Bitmap handle to the image.
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     *        the bitmaps should be preseverd by the plugins.
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     * @param aMaskBitmapHandle Mask Bitmap handle for the image.
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     */
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    virtual void PublishImageL(CMCPPlugin* aPlugin, 
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            TMCPImageDestination aDestination,
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            TInt aBitmapHandle,
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            TInt aMaskBitmapHandle = NULL) = 0;
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    /**
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     * Called when an image needs to be updated.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     * @param aDestination Where the image is to be placed.
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     * @param aID major and minor Skin ID info.
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     * @param aFilename fallback mif/mbm file.
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     * @param aFileBitmapId bitmap id within the fallback file.
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     * @param aFileMaskId mask id within the fallback file.
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     * NOTE:This keeps a cache of the skined incons, sizes are 
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     *      calculated on the observer based on the widget version.
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     */
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    virtual void PublishImageL(CMCPPlugin* aPlugin, 
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            TMCPImageDestination aDestination,
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            const TAknsItemID& aID,
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            const TDesC& aFilename,
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            const TInt aFileBitmapId,
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            const TInt aFileMaskId ) = 0;
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    /**
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     * Called when a text needs to be updated.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     * @param aDestination Where the text is to be placed.
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     * @param aText Descriptor containing the text.
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     */
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    virtual void PublishTextL( CMCPPlugin* aPlugin, 
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            TMCPTextDestination aDestination, 
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            const TDesC& aText ) = 0;
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    /**
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     * Called when an action needs to be updated.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     * @param aDestination Destination trigger that should launch the action.
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     * @param aTrigerMap LIW Map containint the action that can be interpreted
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     * by the specified action handler plugin.
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     */
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    virtual void PublishActionL( CMCPPlugin* aPlugin, 
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            TMCPTriggerDestination aDestination, 
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            CLiwDefaultMap* aTrigerMap ) = 0;
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    /**
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     * Called when a plugin becomes active.
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     *
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     * @since S60 5.0
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     * @param aPlugin Where the mesage is coming from.
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     */
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    virtual void BecameActiveL( CMCPPlugin* aPlugin ) = 0;
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    /**
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     * Called when a plugin becomes active.
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     *
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     * @since S60 5.0
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     * @param aDst The image destination.
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     * @return The size of the image destination.
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     * NOTE: this should be used to query the size of the image destination.
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     *       Resizing is responsibility of the plugin in the case of 
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     *       bitmap handle publishing.
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     */
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    virtual TSize GetImageDestinationSize(TMCPImageDestination aDst) = 0;
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    };
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#endif /*MCPPLUGINOBSERVER_H*/