diff -r e7aa27f58ae1 -r 578830873419 emailuis/nmhswidget/src/nmhswidgetemailengine.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailuis/nmhswidget/src/nmhswidgetemailengine.cpp	Fri Apr 16 14:51:52 2010 +0300
@@ -0,0 +1,188 @@
+/*
+ * 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: 
+ *
+ */
+
+#include <QTimer>
+
+#include "nmhswidgetemailengine.h"
+#include "nmmessageenvelope.h"
+
+#include "nmframeworkadapter_stub.h" //Stub implementation for Sprint 2
+
+
+/*!
+    Constructor
+*/
+NmHsWidgetEmailEngine::NmHsWidgetEmailEngine() :
+    mAccountName(0), 
+    mUnreadCount(0), 
+    m_stub_adapter(0)
+    {
+    m_stub_adapter = new NmFrameworkAdapter_stub();
+
+    updateData();
+    updateAccount();
+    
+    //TODO: To be removed in Sprint 3
+
+    connect( m_stub_adapter, SIGNAL( messageEvent() ) , this, SLOT( updateData() ) );
+    connect( m_stub_adapter, SIGNAL( mailboxEvent() ) , this, SLOT( updateAccount() ) );
+
+    //END
+    
+    }
+
+
+
+/*!
+    Reset envelope list
+    \post mEnvelopeList.isEmpty() == true && all contained objects are deleted
+*/
+void NmHsWidgetEmailEngine::resetEnvelopeList()
+    {
+    while (!mEnvelopeList.isEmpty())
+        {
+        delete mEnvelopeList.takeFirst();    
+        }
+    
+    }
+
+/*!
+    Destructor
+*/
+NmHsWidgetEmailEngine::~NmHsWidgetEmailEngine()
+    {
+    resetEnvelopeList();
+    delete m_stub_adapter;
+    }
+
+
+/*!
+    Shrink envelope list
+    \post mEnvelopeList.count() <= KMaxNumberOfEnvelopesProvided, 
+    other objects are removed and freed.
+*/
+void NmHsWidgetEmailEngine::shrinkEnvelopeList()
+    {
+    //remove & delete the last object from the list
+    //until we have shrinked the list to be small enough
+    while ( mEnvelopeList.count() > KMaxNumberOfEnvelopesProvided )
+        {
+        delete mEnvelopeList.takeLast();    
+        }
+    }
+
+
+/*!
+    getEnvelopes() provides message envelopes. 
+    Amount of message envelopes returned is the smallest of the following factors:
+    'KMaxNumberOfEnvelopesProvided', 'maxEnvelopeAmount', 'amount of available envelopes'. 
+    
+    \param list list to be filled with message envelopes
+    \param maxEnvelopeAmount Client side limit for amount of message envelope count. 
+    \return count of envelopes added to list
+*/
+int NmHsWidgetEmailEngine::getEnvelopes(QList<NmMessageEnvelope> &list, int maxEnvelopeAmount)
+    {
+    int i = 0;
+    for (; i<mEnvelopeList.count() && i<maxEnvelopeAmount ; i++ )
+        {
+        NmMessageEnvelope env( *mEnvelopeList[i] );
+        list.append(env);
+        }
+    return i; 
+    }
+
+/*!
+    UnreadCount
+
+    \return count of unread mails
+*/
+int NmHsWidgetEmailEngine::unreadCount()
+    {
+    return mUnreadCount;
+    }
+
+/*!
+    accountName
+
+    \return name of the monitored account
+*/
+QString NmHsWidgetEmailEngine::accountName()
+    {
+    return mAccountName;
+    }
+
+/*!
+    Refresh email data.
+    \post mData is refreshed with valid content so that it has
+    valid data with maximum of KMaxNumberOfEnvelopesProvided envelopes
+    
+    NOTE: THIS IS STUB IMPLEMENTATION UNTIL SPRINT 3
+*/
+void NmHsWidgetEmailEngine::updateData()
+    {
+    resetEnvelopeList();
+    //TODO Sprint 3: Get the list from the server
+    /* TEST DATA */
+
+    resetEnvelopeList();
+    m_stub_adapter->listMessages(mEnvelopeList);
+    
+    emit mailDataChanged();
+    mUnreadCount = calculateUnreadCount( mEnvelopeList );
+    emit unreadCountChanged( mUnreadCount );
+    /* TEST DATA END*/
+    
+    //TODO: Sprint3 at this point shrink the list to KMaxNumberOfEnvelopesProvided
+    shrinkEnvelopeList();
+    }
+
+/*!
+    Update Account data
+    \post mAccountName is valid
+    
+    NOTE: THIS IS STUB IMPLEMENTATION UNTIL SPRINT 3
+*/
+void NmHsWidgetEmailEngine::updateAccount()
+    {
+    mAccountName = m_stub_adapter->mailboxName();
+    emit accountNameChanged (mAccountName);
+    }
+
+/*!
+    Calculate unread count from envelope list.
+    
+    \param envelopeList List of envelopes from which unread envelopes are to be count.
+    \return count of unreads in list 
+    if unread count is < KMaxUnreadCount, otherwise KMaxUnreadCount. 
+*/
+int NmHsWidgetEmailEngine::calculateUnreadCount(QList<NmMessageEnvelope*> envelopeList)
+    {
+    int unreadCount = 0; 
+    
+    QList<NmMessageEnvelope*>::const_iterator itEnd(envelopeList.constEnd());
+    QList<NmMessageEnvelope*>::const_iterator it = envelopeList.constBegin();
+    
+    for ( ; (it != itEnd)&&(unreadCount < KMaxUnreadCount); ++it)
+    {
+      if ( !(*it)->isRead() )
+          {
+          unreadCount++;
+          }
+    }
+    return unreadCount;
+    }