/*

* Copyright (c) 2009 - 2010 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 <xqsharablefile.h>

#include "nmcommon.h"

#include "nmuienginedef.h"

class QAbstractItemModel;

class NmMailboxListModel;

class NmMessageListModel;

class NmDataManager;

class NmDataPluginFactory;

class NmMailboxMetaData;

class NmMessage;

class NmMessagePart;

class NmMessageEnvelope;

class NmOperation;

class NmMessageCreationOperation;

class NmStoreEnvelopesOperation;

class NmAddAttachmentsOperation;

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);

    NmMessageListModel &messageListModelForSearch(const NmId &mailboxId);

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

    NmMessage *message(

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId);

    QPointer<NmOperation> fetchMessage(

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId);

    QPointer<NmOperation> fetchMessagePart( 

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId,

        const NmId &messagePartId);

    QPointer<NmOperation> fetchMessageParts( 

        const NmId &mailboxId,

        const NmId &folderId,

        const NmId &messageId,

        const QList<NmId> &messagePartIds);

    XQSharableFile messagePartFile(

       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);

    QPointer<NmStoreEnvelopesOperation> setEnvelopes(

        const NmId &mailboxId,

        const NmId &folderId,

        NmEnvelopeProperties property,

        const QList<const NmMessageEnvelope*> &envelopeList);

    QPointer<NmMessageCreationOperation> createNewMessage(const NmId &mailboxId);

    QPointer<NmMessageCreationOperation> createForwardMessage(

        const NmId &mailboxId,

        const NmId &originalMessageId);

    QPointer<NmMessageCreationOperation> createReplyMessage(

        const NmId &mailboxId,

        const NmId &originalMessageId,

        bool replyAll);

    int saveMessage(const NmMessage &message);

    int refreshMailbox(const NmId &mailboxId);

    int goOnline(const NmId &mailboxId);

    int goOffline(const NmId &mailboxId);

    int removeMessage(const NmId &mailboxId,

                      const NmId &folderId,

                      const NmId &messageId);

    void removeDraftMessage(NmMessage *message);

    void saveDraftMessage(NmMessage *message,

                          const QList<NmOperation*> &preliminaryOperations);

    void sendMessage(NmMessage *message,

                     const QList<NmOperation*> &preliminaryOperations);

    bool isSendingMessage() const;

    const NmMessage *messageBeingSent() const;

    QPointer<NmAddAttachmentsOperation> addAttachments(

        const NmMessage &message,

        const QList<QString> &fileList);

    QPointer<NmOperation> removeAttachment(

        const NmMessage &message, 

        const NmId &attachmentPartId);

    NmSyncState syncState(const NmId& mailboxId);

    NmConnectState connectionState(const NmId& mailboxId);

    int search(const NmId &mailboxId,

               const QStringList &searchStrings);

    int cancelSearch(const NmId &mailboxId);

    NmFolderType folderTypeById(NmId mailboxId, NmId folderId);

    void updateActiveFolder(const NmId &mailboxId, const NmId &folderId);

public slots:

    void handleCompletedSendOperation();

    void handleCompletedRemoveDraftOperation();

    void handleCompletedSaveDraftOperation();

    void handleSyncStateEvent(NmSyncState syncState,

                              const NmOperationCompletionEvent &event);

    void handleConnectEvent(NmConnectState connectState,

                            const NmId &mailboxId,

                            const int errorCode);

private slots:

    void handleMessageEvent(NmMessageEvent event,

                            const NmId &folderId,

                            const QList<NmId> &messageIds, 

                            const NmId& mailboxId);

    void handleMailboxEvent(NmMailboxEvent event,

                            const QList<NmId> &mailboxIds);

    void handleMatchFound(const NmId &messageId, const NmId &folderId);

    void messageEventForListModel(NmMessageEvent event,

                            const NmId &folderId,

                            const QList<NmId> &messageIds, 

                            const NmId& mailboxId);

signals:

    void syncStateEvent(NmSyncState, const NmId &);

    void connectionEvent(NmConnectState, const NmId &);

    void operationCompleted(const NmOperationCompletionEvent &event);

    void sendOperationCompleted();

    void messageDeleted(const NmId &mailboxId, const NmId &folderId, const NmId &messageId);

    void mailboxDeleted(const NmId &mailboxId);

    void matchFound(const NmId &, const NmId &);

    void searchComplete();

private:

    NmUiEngine();

    virtual ~NmUiEngine();

private: // Data

    static NmUiEngine *mInstance;

    static int	mReferenceCount;

    NmDataPluginFactory *mPluginFactory;

    NmDataManager *mDataManager;                // Owned

    NmMailboxListModel *mMailboxListModel;      // Owned

    NmMessageListModel *mInboxListModel;      // Owned

    NmMessageListModel *mMessageListModel;      // Owned

    NmMessageListModel *mMessageSearchListModel; // Owned

    QPointer<NmMessageSendingOperation> mSendOperation;  // Not owned

    QPointer<NmOperation> mRemoveDraftOperation; // not owned

    QPointer<NmOperation> mSaveDraftOperation;   // not owned

};

#endif /* NMUIENGINE_H */