messagingapp/msgui/appengine/inc/conversationsengine.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 15:11:31 +0300
branchRCL_3
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permissions -rw-r--r--
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/*
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 * Copyright (c) 2009 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:
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 *
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 */
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#ifndef CONVERSATIONS_ENGINE_H
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#define CONVERSATIONS_ENGINE_H
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// INCLUDES
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#include <QObject>
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#include <QStandardItemModel>
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#include <sqldb.h>
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#ifdef BUILD_DLL
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#define CONVERSATIONS_ENGINE_API_EXPORT Q_DECL_EXPORT
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#else
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#define CONVERSATIONS_ENGINE_API_EXPORT Q_DECL_IMPORT
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#endif
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class ConversationsSummaryModel;
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class ConversationsModel;
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class DraftsModel;
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class ConversationMsgStoreHandler;
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class ConversationsEnginePrivate;
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/**
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 * This is a singleton class which
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 * implements the models for the model/view framework.
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 * The models hold data for the conversations fetched from the
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 * server.
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 *
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 */
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class CONVERSATIONS_ENGINE_API_EXPORT ConversationsEngine : public QObject
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{
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    Q_OBJECT
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public:
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    /**
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     * Returns pointer to sole instance.
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     * @return ConversationEngine object
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     */
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    static ConversationsEngine* instance();
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    /**
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     * Destructor
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     */
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    virtual ~ConversationsEngine();
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public:
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    /**
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     * Returns Conversations Summary Model instance
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     */
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    QStandardItemModel* getConversationsSummaryModel();
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    /**
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     * Returns Conversations Model instance
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     */
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    QStandardItemModel* getConversationsModel();
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    /**
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     * Returns drafts Model instance
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     */
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    QStandardItemModel* getDraftsModel();
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    /**
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     * Get all conversations.
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     * @param conversationId, conversationId
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     * @return returns true if call is successful
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     */
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    bool getConversations(qint64 conversationId);
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    /**
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     * Deregisters the current conversationId and clears the model
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     * @return returns true if call is successful
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     */
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    bool clearConversations();
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    /**
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     * Delete all conversations.
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     * @param conversationId, conversationId
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     * @return returns true if call is successful
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     */    
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    bool deleteConversations(qint64 conversationId);
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    /**
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     * Delete all messages.
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     * @param msgIdList, message list.
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     */  
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    void deleteMessages(QList<int>& msgIdList);
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    /**
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     * Delete all draft messages.
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     */
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    void deleteAllDraftMessages();
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    /**
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     * Marks all the unread conversations to read
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     * @param conversationId, conversationId
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     * @return returns true if call is successful
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     */        
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    bool markConversationRead(qint64 conversationId);
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    /**
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     * Mark messages as read.
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     * @param msgIdList, message list.
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     * @return returns true if call is successful
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     */      
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    bool markMessagesRead(QList<int>& msgIdList);
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    /**
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     * Get Contact details name.
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     * @param conversationId, conversationId
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     * @param displayName, Name
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     */  
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    void getContactDetails(qint64 conversationId,
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        QString& displayName,
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        QString& address);
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    /**
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     * Get conversationId for a given address.
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     * @param address, Phone number
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     * @return conversation id
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     */  
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    qint64 getConversationIdFromAddress(QString address);
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    /**
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     * Get current conversation id.
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     */  
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    qint64 getCurrentConversationId();
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    /**
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     * Get conversationId for a given contactId.
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     * @param contactId, Contact Id
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     * @return conversation id
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     */ 
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    qint64 getConversationIdFromContactId(qint32 contactId);
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    /**
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     * Emits conversationModelPopulated signal
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     */ 
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    void emitConversationModelPopulated();
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    /**
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     * Emits conversationModelUpdated signal
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     */ 
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    void emitConversationModelUpdated();
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    /**
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     * Updates the new conversation id for list view
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     */
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    void emitOpenConversationViewIdUpdate(int newConversationId);
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    void disableRegisterationForCVEvents();
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    /**
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     * Emits conversationListModelPopulated signal
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     */ 
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    void emitConversationListModelPopulated();
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    /**
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     * Emits conversationListModelEntryDeleted
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     */
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    void emitConversationListModelEntryDeleted( int conversationId );
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    /**
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     *  Starts fetching remaing conversations
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     */
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    void fetchMoreConversations();
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    /**
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     *  Resend a failed message
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	 *@param  messageId qint32 the Id of the message to be sent
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	 *@return bool true if succeeded
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     */
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    bool resendMessage(qint32 messageId);
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    /**
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     * Download a specified message
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     * @param messageId qint32 the Id of the message 
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     * @return KErrNone if Download request is successful, 
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     *         KErrNotFound if settings are not available,
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     *         KErrGeneral for other cases
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     */
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    int downloadMessage(qint32 messageId);  
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    /**
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     * Query if the download operation be performed for
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     * a message notification entry
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     * @param aId, message notification id
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     * @return true if download operation is possible
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     */
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    bool downloadOperationSupported(qint32 messageId);
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    /**
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     * Mark message as read and get the message type
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     * @param messageId  message Id 
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     * @param msgType message type is written to this.
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     * @param msgType message sub type is written to this.
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     */
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    void markAsReadAndGetType( qint32 messageId,
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                               int& msgType,
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                               int& msgSubType);
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    /*
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     * Get SQL DB handle
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     * @param isOpen, set to true if open, check this before using the handle
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     */
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    RSqlDatabase& getDBHandle(TBool& isOpen);
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    /**
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     * Get the biotype of a message
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     * @param messageId
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     */
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    int getMsgSubType(int messageId);
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private:
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    /**
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     * Constructor
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     */
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    explicit ConversationsEngine(QObject* parent = 0);    
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signals:
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    /**
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     * ConversationListModelPopulated signal indicating 
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     * that the model is ready to be displayed
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     */ 
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    void conversationModelPopulated();
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    /**
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     * ConversationModelUpdated signal indicating dynamic 
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     * updates in the model
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     */ 
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    void conversationModelUpdated();
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    /**
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     * ConversationListModelPopulated signal indicating 
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     * that the model is ready to be displayed
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     */
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    void conversationListModelPopulated();
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	/** 
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	 * Signal to indicate the completion of conversation delete
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	 * operation.
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	 */
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     void conversationListEntryDeleted( int conversationId );
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    /**
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     * Signal to specify the CV model empty now
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     */
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    void conversationViewEmpty();
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private:
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    /**
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     * Conversations Summary Model
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     * Own
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     */        
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    ConversationsSummaryModel* mConversationsSummaryModel;
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    /**
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     * Conversations Model
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     * Own
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     */    
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    ConversationsModel* mConversationsModel;
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    /**
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     * Drafts Model
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     * Own
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     */    
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    DraftsModel* mDraftsModel;
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    /**
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     * MsgStoreHandler
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     * Own
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     */    
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    ConversationMsgStoreHandler* mConversationMsgStoreHandler;
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    /**
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     * ConversationsEnginePrivate
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     * Own
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     */
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    ConversationsEnginePrivate* d_ptr;
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};
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#endif // CONVERSATIONS_ENGINE_H