1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef __CBACKSTEPPING_H

    19 #define __CBACKSTEPPING_H

    20 

    21 #include <w32std.h>

    22 #include <tswindowgroupsobserver.h>

    23 

    24 class CTsBacksteppingFilter;

    25 

    26 NONSHARABLE_CLASS(CTsBackstepping) : public CTsWindowGroupsObserver

    27 {

    28 public:

    29     static CTsBackstepping* NewL( MTsWindowGroupsMonitor& );

    30     static CTsBackstepping* NewLC( MTsWindowGroupsMonitor& );

    31     virtual ~CTsBackstepping();

    32 

    33 private:

    34     CTsBackstepping( MTsWindowGroupsMonitor& );

    35     void ConstructL();

    36     void HandleWindowGroupChanged( 

    37                             MTsResourceManager&, 

    38                             const TArray<RWsSession::TWindowGroupChainInfo>& );

    39     void HandleWindowGroupChangedL( 

    40                         MTsResourceManager&, 

    41                         const TArray<RWsSession::TWindowGroupChainInfo>& );

    42     TInt HomescreenOffsetL( 

    43                         MTsResourceManager&, 

    44                         const TArray<RWsSession::TWindowGroupChainInfo>& )const;

    45     TInt ParentOffsetL( TInt, 

    46                         const TArray<RWsSession::TWindowGroupChainInfo>& )const;

    47     inline TBool IsEmbededApp( const RWsSession::TWindowGroupChainInfo& ) const;

    48     TUid GetUidFromWindowGroupL(MTsResourceManager &aResources, TInt aWindowGroupId) const;

    49 

    50 private:

    51     CTsBacksteppingFilter *iFilter;

    52 

    53 };

    54 

    55 #endif // __CBACKSTEPPING_H