internetradio2.0/uiinc/irviewstack.h
changeset 0 09774dfdd46b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/uiinc/irviewstack.h	Mon Apr 19 14:01:53 2010 +0300
@@ -0,0 +1,100 @@
+/*
+* Copyright (c) 2008-2008 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 C_CIRVIEWSTACK_H
+#define C_CIRVIEWSTACK_H
+
+#include <e32base.h>
+
+class CIRViewStack : public CBase
+{
+
+public:
+
+    /**
+     * Two-phased constructor.
+     *
+     * @return Instance of CVRViewStack
+     */
+    static CIRViewStack* NewL();
+
+    /**
+     * ~CVRViewStack
+     * Destructor.
+     */
+    ~CIRViewStack();
+    
+    /**
+     * Returns UID of the previously active view.
+     * @return UID of previous view.
+     */
+    TUid Peek() const;
+
+    /**
+     * Pushes view UID to view stack.
+     * View stack holds all previous views, not the current view.
+     * So the top item of this stack should usually be the previous view.
+     * @param aView UID of the view to push to view stack.
+     */
+    void PushL( TUid aView );
+
+    /**
+     * Returns number of views in to the stack.
+     * @return UID of the view popped from view stack.
+     */
+    TInt Count() const;
+    
+    /**
+     * Pops and returns view UID from top of view stack.
+     * View stack holds all previous views, not the current view.
+     * So the top item of this stack should usually be the previous view.
+     * @return UID of the view popped from view stack.
+     */
+    TUid Pop();
+
+    /**
+     * Pops to given Id and returns view UID from top of view stack.
+     * View stack holds all previous views, not the current view.
+     * So the top item of this stack should usually be the previous view.
+     * @return UID of the view popped from view stack.
+     */ 
+    TUid CIRViewStack::PopTo( TUid aId );
+
+private:
+
+    /**
+     * CVRViewStack.
+     * C++ default constructor.
+     */
+    CIRViewStack();
+    
+    /**
+     * Second phase constructor.
+     */
+    void ConstructL();
+
+private: // Owned
+    /**
+     * View stack holds all previous views, not the current view.
+     * So the top item of this stack should usually be the previous view.
+     */  
+    RArray<TUid> iViewStack;
+
+};
+
+#endif // C_CIRVIEWSTACKk_H