--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/nmhswidget/inc/nmhswidgetemailengine.h	Tue Aug 31 15:04:17 2010 +0300
@@ -0,0 +1,101 @@
+/*
+ * 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"
+ * 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 NMHSWIDGETEMAILENGINE_H_
+#define NMHSWIDGETEMAILENGINE_H_
+
+#include <QObject>
+#include "nmcommon.h"
+
+class NmMessageEnvelope;
+class NmDataPluginFactory;
+class NmDataPluginInterface;
+class QPluginLoader;
+class QTimer;
+class XQAiwRequest;
+
+//Three seconds
+const int NmHsWidgetEmailEngineUpdateTimerValue = 3000;
+
+enum NmHsWidgetEmailEngineExceptionCode
+    {
+    NmEngineExcFailure,
+    NmEngineExcAccountDeleted
+    };
+
+class NmHsWidgetEmailEngine : public QObject
+    {
+    Q_OBJECT
+    
+public:
+    NmHsWidgetEmailEngine( const NmId& monitoredMailboxId );
+    bool initialize(); 
+    ~NmHsWidgetEmailEngine();
+
+    int getEnvelopes(QList<NmMessageEnvelope> &list, int maxEnvelopeAmount);
+    int unreadCount();
+    QString accountName();
+    void deleteAiwRequest();
+        
+public slots:
+    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);
+    void handleUpdateTimeout();
+    
+    void aiwRequestOk(const QVariant& result);
+    void aiwRequestError(int errorCode, const QString& errorMessage);
+    
+signals:
+    void mailDataChanged();    
+    void accountNameChanged(const QString& accountName);
+    void unreadCountChanged(const int& unreadCount);
+    void exceptionOccured(const int& err);
+    
+private:
+    bool constructNmPlugin();
+    bool updateData(); 
+    bool updateAccount();
+    void resetEnvelopeList();
+    
+private:
+    NmId mMailboxId;
+    NmId mFolderId;
+    QString mAccountName;
+    int mUnreadCount;
+    QList<NmMessageEnvelope*> mEnvelopeList;
+    NmDataPluginInterface *mEmailInterface;
+    NmDataPluginFactory* mFactory;
+    //suspension variables
+    bool mAccountEventReceivedWhenSuspended;
+    bool mMessageEventReceivedWhenSuspended;
+    bool mSuspended; 
+    QTimer* mUpdateTimer;
+    XQAiwRequest* mAiwRequest;
+    };
+
+#endif /* NMHSWIDGETEMAILENGINE_H_ */