diff -r 23b5d6a29cce -r 4785f57bf3d4 homescreenapp/hsdomainmodel/src/hsbackuprestoreobserver.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenapp/hsdomainmodel/src/hsbackuprestoreobserver.cpp	Thu May 27 12:46:08 2010 +0300
@@ -0,0 +1,200 @@
+/*
+* 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:  Home screen Backup/Restore observer.
+*
+*/
+
+
+#include "hsdatabase.h"
+#include "hsbackuprestoreobserver.h"
+#ifdef Q_OS_SYMBIAN
+#include <connect/sbdefs.h>
+#include <e32property.h>
+#include <XQSettingsManager>
+#include "hsbackuprestoreactivecallback.h"
+#include "hsbackuprestoreobserver_p.h"
+
+/*!
+    Constructs a new observer with the given \a parent object.
+*/
+HsBackupRestoreObserverPrivate::HsBackupRestoreObserverPrivate(HsBackupRestoreObserver *observer,
+                                                               QObject *parent):
+    QObject(parent),
+    mQ(observer),
+    mCallBack(NULL),
+    mActiveBackupClient(NULL),
+    mLastType(conn::EBURNormal)
+{
+    XQPublishAndSubscribeSettingsKey backupRestoreKey(KUidSystemCategory.iUid, KUidBackupRestoreKey);
+    XQSettingsManager *sm = new XQSettingsManager(this);
+    
+    connect(sm,SIGNAL(valueChanged(XQSettingsKey, const QVariant &)), this,
+			          SLOT(handleKeyChange(XQSettingsKey, const QVariant &)));
+    sm->startMonitoring(backupRestoreKey);
+}
+
+/*!
+    Destructor.
+*/
+HsBackupRestoreObserverPrivate::~HsBackupRestoreObserverPrivate()
+{   
+    disconnect(sender(), SIGNAL(valueChanged(XQSettingsKey, const QVariant &)),
+			   this, SLOT(handleKeyChange(XQSettingsKey, const QVariant&)));
+    delete mCallBack;
+    delete mActiveBackupClient;
+}
+
+/*!
+    Informs active backup client, when Home screen is ready for backup/restore.
+*/
+void HsBackupRestoreObserverPrivate::readyForBUR()
+{
+	mActiveBackupClient->ConfirmReadyForBURL( KErrNone );
+}
+
+/*!
+    \fn HsBackupRestoreObserverPrivate::handleKeyChange()
+
+    Handles the key change. Creates active backup client and 
+    informs client about backup/restore state change.
+*/
+
+void HsBackupRestoreObserverPrivate::handleKeyChange(XQSettingsKey key, const QVariant &value)
+{    
+    conn::TBURPartType type = static_cast< conn::TBURPartType >
+        ( value.toInt() & conn::KBURPartTypeMask );
+		
+	// Test if the device is going into backup or restore mode, and we are
+    // required to participate.
+    if ( key.key() == KUidBackupRestoreKey && 
+         (( type == conn::EBURBackupFull || type == conn::EBURRestoreFull ) ||
+         ( type == conn::EBURBackupPartial || type == conn::EBURRestorePartial )) )
+    {
+        if ( !mCallBack )
+        {
+            mCallBack = CHsBURActiveCallback::NewL(mQ);
+        }
+
+        if ( !mActiveBackupClient )
+        {
+            mActiveBackupClient = conn::CActiveBackupClient::NewL( mCallBack );
+
+            if ( ( type == conn::EBURBackupPartial || 
+                   type == conn::EBURRestorePartial ) &&
+                 !mActiveBackupClient->DoesPartialBURAffectMeL() )
+            {
+                delete mCallBack;
+                mCallBack = NULL;
+                delete mActiveBackupClient;
+                mActiveBackupClient = NULL;
+                return;
+            }           
+            mQ->backupRestoreStarted();            
+        }        
+    }
+    else
+    {
+        if ( key.key() == KUidBackupRestoreKey && type == conn::EBURNormal )
+        {
+            if ( (mLastType == conn::EBURBackupFull || mLastType == conn::EBURBackupPartial) ||
+            	 (mLastType == conn::EBURRestorePartial || mLastType == conn::EBURRestoreFull) )
+            {                
+                mQ->backupRestoreComplited();
+            }         
+            // delete once back to normal.
+            delete mCallBack;
+            mCallBack = NULL;
+            delete mActiveBackupClient;
+            mActiveBackupClient = NULL;            
+        }
+    }
+
+    mLastType = type;
+}
+#endif //Q_OS_SYMBIAN
+
+/*!
+    Singleton. 
+*/
+HsBackupRestoreObserver *HsBackupRestoreObserver::instance()
+{
+    if (!mInstance) {
+        mInstance.reset(new HsBackupRestoreObserver);
+    }
+    return mInstance.data();
+}
+
+/*!
+    Constructs a new observer with the given \a parent object.
+*/
+HsBackupRestoreObserver::HsBackupRestoreObserver(QObject *parent)
+ : QObject(parent),
+   mBUROngoing(false)
+{
+#ifdef Q_OS_SYMBIAN
+    mD = new HsBackupRestoreObserverPrivate(this);
+#endif //Q_OS_SYMBIAN
+}
+
+/*!
+    Destructor.
+*/
+HsBackupRestoreObserver::~HsBackupRestoreObserver()
+{
+#ifdef Q_OS_SYMBIAN
+    delete mD;
+#endif //Q_OS_SYMBIAN
+}
+
+/*!
+    Called when backup/restore is started.
+*/
+void HsBackupRestoreObserver::backupRestoreStarted()
+{
+	mBUROngoing = true;
+	emit event_backupRestoreStarted();
+}
+
+/*!
+    Called when backup/restore is completed.
+*/
+void HsBackupRestoreObserver::backupRestoreComplited()
+{
+	mBUROngoing = false;
+	emit event_backupRestoreComplited();
+}
+
+/*!
+    Called when Home screen is ready for backup/restore.
+*/
+void HsBackupRestoreObserver::readyForBUR()
+{
+#ifdef Q_OS_SYMBIAN
+    mD->readyForBUR();
+#endif //Q_OS_SYMBIAN
+}
+
+/*!
+    Returns true if bacup/restore is ongoing.
+*/
+bool HsBackupRestoreObserver::checkBUR()
+{
+	return mBUROngoing;
+}
+/*!
+    Points to the observer instance.
+*/
+QScopedPointer<HsBackupRestoreObserver> HsBackupRestoreObserver::mInstance(0);
+
+// End of File