diff -r 578830873419 -r ecc8def7944a emailuis/nmhswidget/inc/nmhswidgetemailengine.h
--- a/emailuis/nmhswidget/inc/nmhswidgetemailengine.h	Fri Apr 16 14:51:52 2010 +0300
+++ b/emailuis/nmhswidget/inc/nmhswidgetemailengine.h	Mon May 03 12:23:15 2010 +0300
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * Copyright (c) 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"
@@ -19,8 +19,22 @@
 #define NMHSWIDGETEMAILENGINE_H_
 
 #include <QObject>
+#include "nmcommon.h"
+
 class NmMessageEnvelope;
-class NmFrameworkAdapter_stub;
+class NmDataPluginFactory;
+class NmDataPluginInterface;
+class QPluginLoader;
+
+
+
+enum NmHsWidgetEmailEngineErrorCode
+    {
+    NmEngineNoErr,
+    NmEngineErrNotFound,
+    NmEngineErrFailure
+    };
+
 //Maximum amount of envelopes that can be provided to client in getData function
 //This is also the amount of envelopes that is kept in mData all the time
 const int KMaxNumberOfEnvelopesProvided = 2;
@@ -32,7 +46,7 @@
     {
     Q_OBJECT
 public:
-    NmHsWidgetEmailEngine();
+    NmHsWidgetEmailEngine( const NmId& monitoredMailboxId );
     ~NmHsWidgetEmailEngine();
 
     int getEnvelopes(QList<NmMessageEnvelope> &list, int maxEnvelopeAmount);
@@ -40,26 +54,44 @@
     QString accountName();
         
 public slots:
-    void updateData(); 
-    void updateAccount();
+    void handleMessageEvent( 
+            NmMessageEvent event,
+            const NmId &folderId,
+            const QList<NmId> &messageIds,
+            const NmId& mailboxId);
 
+    void handleMailboxEvent(NmMailboxEvent event, const QList<NmId> &mailboxIds);
+   
+    //Activity control
+    void suspend();
+    void activate();
+    void launchMailAppInboxView();
+    void launchMailAppMailViewer(const NmId &messageId);
+    
 signals:
     void mailDataChanged();    
     void accountNameChanged(const QString& accountName);
     void unreadCountChanged(const int& unreadCount);
+    void errorOccured(NmHsWidgetEmailEngineErrorCode err);
     
 private:
-    int calculateUnreadCount(QList<NmMessageEnvelope*> envelopeList);
+    void constructNmPlugin();
+    void updateData(); 
+    void updateAccount();
     void resetEnvelopeList();
-    void shrinkEnvelopeList();
     
 private:
+    NmId mMailboxId;
+    NmId mFolderId;
     QString mAccountName;
     int mUnreadCount;
     QList<NmMessageEnvelope*> mEnvelopeList;
-    
-    NmFrameworkAdapter_stub* m_stub_adapter; 
-
+    NmDataPluginInterface *mEmailInterface;
+    NmDataPluginFactory* mFactory;
+    //suspension variables
+    bool mAccountEventReceivedWhenSuspended;
+    bool mMessageEventReceivedWhenSuspended;
+    bool mSuspended; 
     };
 
 #endif /* NMHSWIDGETEMAILENGINE_H_ */