diff -r e7aa27f58ae1 -r 578830873419 emailservices/nmclientapi/inc/nmapiengine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailservices/nmclientapi/inc/nmapiengine.h	Fri Apr 16 14:51:52 2010 +0300
@@ -0,0 +1,78 @@
+/*
+ * 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 NMAPIENGINE_H
+#define NMAPIENGINE_H
+
+#include "nmenginedef.h"
+#include "nmcommon.h"
+#include "nmapimailbox.h"
+#include "nmapifolder.h"
+#include "nmprivateclasses.h"
+#include "nmapimessageenvelope.h"
+
+class NmDataPluginFactory;
+
+class NmEngine : public QObject
+{
+    Q_OBJECT
+public:
+    static NmEngine* instance();
+    static void releaseInstance(NmEngine *&engine);
+
+    void listMailboxes(QList<EmailClientApi::NmMailbox> &mailboxList);
+
+    void listFolders(const quint64 mailboxId, QList<EmailClientApi::NmFolder> &folderList);
+    void listEnvelopes(const quint64 mailboxId, const quint64 folderId, QList<
+        EmailClientApi::NmMessageEnvelope> &messageEnvelopeList);
+
+    bool envelopeById(
+        const quint64 mailboxId,
+        const quint64 folderId,
+        const quint64 envelopeId,
+        EmailClientApi::NmMessageEnvelope &envelope);
+    bool mailboxById(const quint64 mailboxId, EmailClientApi::NmMailbox &mailbox);
+
+    void startCollectingEvents();
+    signals:
+    /*!
+     * It contains info about event in emailstore.
+     * 
+     * \arg Contains info about event and related object (message or mailbox list)
+     */
+    void emailStoreEvent(NmApiMessage message);
+
+public slots:
+    void mailboxChangedArrived(NmMailboxEvent, const QList<NmId> &mailboxIds);
+    void messageChangedArrived(
+        NmMessageEvent messageEvent,
+        const NmId &folderId,
+        const QList<NmId> &messageIds,
+        const NmId &mailboxId);
+
+private:
+    NmEngine();
+    virtual ~NmEngine();
+
+private:
+    static NmEngine *mInstance;//!<Static instance of NmEngine. There can be only one instance of engine
+    static quint32 mReferenceCount;//!<Count of refences to engine instance
+
+    NmDataPluginFactory *mFactory;//!<Plugin factory. Is needed to get plugins for emails
+};
+
+#endif /* NMENGINE_H_ */