/*

* Copyright (c) 2009 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:

*

*/

#ifndef CNTHISTORYMODEL_H

#define CNTHISTORYMODEL_H

#include <QAbstractListModel>

#include <QSharedData>

#include <qtcontacts.h>

#include "cnthistorymodelglobal.h"

QTM_USE_NAMESPACE

class CntHistoryModelData;

class LogsEvent;

class HistoryItem;

class MsgItem;

/*!

 * CntHistoryModel is a model used to fetch conversation history

 * (SMS & call logs) from databases. It will 

 * cache content from the databases to be displayed on the screen

 * by the conversation view.

 * 

 * Note that that this is a prototype implementation and does

 * not yet support more advanced features.

 */

class CNTHISTORYMODEL_EXPORT CntHistoryModel : public QAbstractListModel

{    

    Q_OBJECT

public:

    enum ConversationDirection

        {

        Incoming = 0,

        Outgoing,

        Missed

        };

    enum ReadStatus

        {

        Unseen = 3,

        Seen

        };

    enum ItemType

        {

        CallLog = 5,

        Message

        };

    enum CustomRoles

        {

        SeenStatusRole = Qt::UserRole + 1,

        DirectionRole,

        ItemTypeRole,

        PhoneNumberRole

        };

public:

    CntHistoryModel(QContactLocalId contactId,

                    QContactManager* manager,

                    QObject *parent = 0);

    ~CntHistoryModel();

public: // from QAbstractTableModel/QAbstractItemModel

    QVariant data(const QModelIndex& index, int role) const;

    int rowCount(const QModelIndex& parent = QModelIndex()) const;

    void sort(int column = 0, Qt::SortOrder order = Qt::AscendingOrder);

    void clearHistory();

    void markAllAsSeen();

    void sortAndRefresh(Qt::SortOrder order = Qt::AscendingOrder);

private:

    void initializeModel();

    QVariant displayRoleData(const HistoryItem& item) const;

    // Utility finctions

    void readLogEvent(LogsEvent* event, HistoryItem& item);

    void readMsgEvent(MsgItem& event, HistoryItem& item);

    void initializeLogsModel();

    void initializeMsgModel();

    bool validateRowIndex(const int index) const;

    QList< QList<int> > findIndices( const QList< int >& indices );

private slots:

    // Logs model slots

    void logsRowsInserted(const QModelIndex& parent, int first, int last);

    void logsRowsRemoved(const QModelIndex& parent, int first, int last);

    void logsDataChanged(const QModelIndex& first, const QModelIndex& last);

    void clearedCallLogs(int err);

    void markingCompleted(int err);

    // Messaging model slots

    void messagesReady(QList<MsgItem>& msgs);

    void messageAdded(MsgItem& msg);

    void messageChanged(MsgItem& msg);

    void messageDeleted(MsgItem& msg);

private:

	QSharedDataPointer<CntHistoryModelData> d;

};

#endif