/*

 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

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

 * which accompanies this distribution, and is available

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

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  Message Preview Handler

 *

 */

#ifndef _C_CS_PREVIEW_PLUGIN_HANDLER_H_

#define _C_CS_PREVIEW_PLUGIN_HANDLER_H_

//SYSTEM INCLUDES

#include <msvapi.h>

#include <f32file.h>

#include <thumbnailmanager.h>

#include <thumbnailmanagerobserver.h>

#include <thumbnaildata.h>

#include <sqldb.h>

//USER INCLUDES

#include "ccspreviewplugin.h"

#include "UniDataModel.h"

// FORWARD DECLARATION

class CCsPlugin;

class CMsvSession;

class MCsPluginEventObserver;

class MMsvSessionObserver;

class CCsConversationEntry;

class CCsPreviewPlugin;

class CClientMtmRegistry;

class CMmsClientMtm;

/*

 * Thumbnail Request Data

 */

struct ThumbnailRequestData

    {

    /*

     * Request Id

     */

    TThumbnailRequestId iRequestId;

    /*

     * Message Id

     */

    TMsvId iMsgId;

    };

/**

 *  This class interacts with MsvServer to fetch message data

 */

class CCsPreviewPluginHandler : public CBase,

        public MMsvSessionObserver,

        public MUniDataModelObserver,

        public MThumbnailManagerObserver

    {

public:

    /**

     * Two phase construction

     */

    static CCsPreviewPluginHandler* NewL(CCsPreviewPlugin *aMsgObserver);

    /**

     * Destructor

     */

    virtual ~CCsPreviewPluginHandler();

public:

    //MMsvSessionObserver

    /**

     * Handles the MsvServer updates. Implemented for MMsvSessionObserver

     */

    void HandleSessionEventL(TMsvSessionEvent aEvent, TAny* aArg1,

            TAny* aArg2, TAny* aArg3);

public:

    //MUniDataModelObserver

    /**

     */

    void RestoreReady(TInt aParseResult, TInt aError);

public:

    // Callbacks from MThumbnailManagerObserver for getting thumbnails

    void ThumbnailPreviewReady(MThumbnailData& aThumbnail,

            TThumbnailRequestId aId);

    void ThumbnailReady(TInt aError, MThumbnailData& aThumbnail,

            TThumbnailRequestId aId);

public:

    /*

     * Compare by request Id.

     */

    static TBool CompareByRequestId(const ThumbnailRequestData& aFirst,

            const ThumbnailRequestData& aSecond);

private:

    /**

     * Constructor   

     */

    CCsPreviewPluginHandler();

    /**

     * 2nd phase construtor

     */

    void ConstructL(CCsPreviewPlugin *aMsgPlugin);

    /**

     * Process each entry

     *@param aSelection, CMsvEntrySelections

     */

    void HandleEventL(CMsvEntrySelection* aSelection);

    /**

     * Bind bodytext to sql statement.

     *@param sqlStmt, RSqlStatement

     *@param attachmentId, TMsvAttachmentId

     */

    void BindBodyText(RSqlStatement& sqlStmt, TMsvAttachmentId attachmentId);

    /**

     * Get Thumbnail data from attachment

     *@param attachmentId, TMsvAttachmentId

     *@param mimeType, 

     *@param msgId, message id

     */

    void GetThumbNailL(TMsvAttachmentId attachmentId, TDesC8& mimeType,

            TMsvId msgId);

    /*

     * Process Thumbnail data

     * @param aThumbnail MThumbnailData

     * @param aId TThumbnailRequestId

     */

    void HandleThumbnailReadyL(MThumbnailData& aThumbnail,

            TThumbnailRequestId aId);

private:

    //Data

    /**

     * MsvServer session object

     * Own

     */

    CMsvSession* iSession;

    /**

     * iMsgObserver

     * The Observer interface

     * Not Own.

     */

    CCsPreviewPlugin *iMsgObserver;

    /**

     * Mtm registry object

     * Own

     */

    CClientMtmRegistry* iMtmRegistry;

    /**

     * Mms client mtm object

     * Own.

     */

    CMmsClientMtm* iMmsMtm;

    /*

     * File session

     */

    RFs ifsSession;

    /*

     * Thumbnail request array.

     * Own

     */

    RArray<ThumbnailRequestData> iThumbnailRequestArray;

    /*

     * Thumbnail manager.

     * Own

     */

    CThumbnailManager* iThumbnailManager;

    /*

     * Sqlite DB Handle

     */

    RSqlDatabase iSqlDb;

    };

#endif // _C_CS_PREVIEW_PLUGIN_HANDLER_H_