/*

* 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 NMUIENGINE_H

#define NMUIENGINE_H

#include <QObject>

#include <QList>

#include "nmcommon.h"

#include "nmuienginedef.h"

class NmMailboxListModel;

class NmMessageListModel;

class NmDataManager;

class NmDataPluginFactory;

class NmMailboxMetaData;

class NmMessage;

class NmMessagePart;

class NmMessageEnvelope;

class NmMessageCreationOperation;

class NmStoreEnvelopesOperation;

class NmAddAttachmentsOperation;

class NmOperation;

class NmCheckOutboxOperation;

class NmMessageSendingOperation;

class NMUIENGINE_EXPORT NmUiEngine: public QObject

{

    Q_OBJECT

public:

    static NmUiEngine *instance();

    static void releaseInstance(NmUiEngine *&instance);

    NmMailboxListModel &mailboxListModel();

    void refreshMailboxListModel();

    NmMessageListModel &messageListModel(const NmId &mailboxId, const NmId &folderId);

    void releaseMessageListModel(const NmId &mailboxId);

    NmId standardFolderId(const NmId &mailboxId, NmFolderType folderType);

    NmMessage *message(

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId);

    NmOperation *fetchMessage(

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId);

    NmOperation *fetchMessagePart( 

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId,

        const NmId& messagePartId);

    NmMailboxMetaData *mailboxById(const NmId &mailboxId);

    int contentToMessagePart(

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId,

        NmMessagePart &messagePart);

    NmMessage *createMessage(

        const NmId &mailboxId,

        const NmId &folderId);

    int deleteMessages(

        const NmId &mailboxId,

        const NmId &folderId,

        const QList<NmId> &messageIdList);

    NmStoreEnvelopesOperation *setEnvelopes(

            const NmId &mailboxId,

            const NmId &folderId,

            NmEnvelopeProperties property,

            const QList<const NmMessageEnvelope*> &envelopeList);

    NmMessageCreationOperation *createNewMessage(const NmId &mailboxId);

    NmMessageCreationOperation *createForwardMessage(

            const NmId &mailboxId,

            const NmId &originalMessageId);

    NmMessageCreationOperation *createReplyMessage(

            const NmId &mailboxId,

            const NmId &originalMessageId,

            bool replyAll);

    int saveMessage(const NmMessage &message);

    NmOperation *saveMessageWithSubparts(const NmMessage &message);

    int refreshMailbox(const NmId &mailboxId);

    int removeMessage(

                const NmId &mailboxId,

                const NmId &folderId,

                const NmId &messageId);

    void storeOperation(NmOperation *op);

    void sendMessage(NmMessage *message);

    bool isSendingMessage() const;

    const NmMessage *messageBeingSent();

    NmAddAttachmentsOperation *addAttachments(

            const NmMessage &message,

            const QList<QString> &fileList);

    NmOperation *removeAttachment(const NmMessage &message, const NmId &attachmentPartId);

    NmCheckOutboxOperation *checkOutbox(const NmId &mailboxId);

    NmSyncState syncState(const NmId& mailboxId);

    NmConnectState connectionState(const NmId& mailboxId);

public slots:

    void handleCompletedOperation();

    void handleCompletedSendOperation();

    void handleCompletedSaveOperation(int error);

    void cleanupSendOperation();

signals:

    void syncStateEvent(NmSyncState, const NmId &);

    void connectionEvent(NmConnectState, const NmId &);

private:

    NmUiEngine();

    virtual ~NmUiEngine();

private:

    static NmUiEngine *mInstance;

    static int	mReferenceCount;

    NmDataPluginFactory *mPluginFactory;

    NmDataManager *mDataManager;                // Owned

    NmMailboxListModel *mMailboxListModel;      // Owned

    NmMessageListModel *mMessageListModel;      // Owned

    QList<NmOperation*> mOperations;			// Owned

    NmMessageSendingOperation *mSendOperation;  // Owned

    NmOperation *mSaveOperation;                // Owned

    // Flag that idicates if the message should be sent after storing

    bool mMessageToBeSent;

	NmMessage *mMessage;                        // Owned

};

#endif /* NMUIENGINE_H */