diff -r 59984e68247d -r 6abfb1094884 phonebookui/cntcommonui/core/cntviewnavigator.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/phonebookui/cntcommonui/core/cntviewnavigator.h	Tue Sep 21 17:07:25 2010 +0300
@@ -0,0 +1,81 @@
+/*
+* 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 CNTVIEWNAVIGATOR_H_
+#define CNTVIEWNAVIGATOR_H_
+#include <QObject>
+#include <QStack>
+#include <hbnamespace.h>
+#include "cntglobal.h"
+/*!
+ * Navigator keeps track on view history, the path that user has
+ * gone throug. If back() is called, one step back view id
+ * given, unless exception is set to current view id. In case of
+ * exception, navigator goes back in history until the exception 
+ * value is found. Note the difference between "back with exeception" vs.
+ * "launching given view id" (next()). 
+ *
+ * Next goes one step forward and stores history. 
+ * Navigator is implemented as stack of view ids.
+ *
+ */
+class QTPBK_EXPORT CntViewNavigator : public QObject
+{
+    Q_OBJECT
+    friend class T_NavigatorTest;
+    
+public:
+    CntViewNavigator( QObject* aParent );
+    ~CntViewNavigator();
+    
+public:
+    /*!
+     * Next view puts the given id as current view
+     */
+    void next( const int& aId, QFlags<Hb::ViewSwitchFlag> &flags );
+    
+    /*!
+     * Back view returns the previous view
+     */
+    const int& back( QFlags<Hb::ViewSwitchFlag> &flags, bool toRoot );
+    
+    /*!
+     * Add exceptions to next/back mechanism. Function will use the aBack argument
+     * for previous view when aCurrent is the active view.
+     */
+    void addException( const int& aCurrent, const int& aBack );
+    void removeException( const int& aCurrent );
+    
+    /*!
+     * Add special view switching effects for some of the views. 
+     */
+    void addEffect( const int& aCurrent, const int& aBack );
+    void removeEffect( const int& aCurrent );
+    
+    /*!
+     * Set a view as a root view.
+     */
+    void addRoot( const int& aCurrent );
+    
+private:
+    QStack<int> iViewStack;
+    QMap< int, int > iExceptions;
+    QMap< int, int > iEffects;
+    QList<int> iRoots;
+    int iTop;
+};
+#endif /* CNTVIEWNAVIGATOR_H_ */