--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreensrv_plat/sapi_backstepping/src/bsserviceinterface.cpp	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,271 @@
+/*
+* Copyright (c) 2007 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:  Back Stepping Service Interface
+ *
+*/
+
+
+#include "bsserviceinterface.h"
+#include "bsserviceconstants.h"
+
+using namespace LIW;
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+CBSServiceInterface::CBSServiceInterface()
+    {
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::ConstructL()
+    {
+    User::LeaveIfError( iBSClient.Connect( ) );
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CBSServiceInterface* CBSServiceInterface::NewLC()
+    {
+    CBSServiceInterface* self = new( ELeave ) CBSServiceInterface;
+    CleanupStack::PushL( self );
+    self->ConstructL( );
+    return self;
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+CBSServiceInterface::~CBSServiceInterface()
+    {
+    iBSClient.Close( );
+    }
+
+// ---------------------------------------------------------------------------
+//  Executes the SAPI as per params
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::ExecuteCmdL( const TDesC8& aCmdName,
+    const CLiwGenericParamList& aInParamList,
+    CLiwGenericParamList& aOutParamList, TUint aCmdOptions,
+    MLiwNotifyCallback* aCallback )
+    {
+    if ( !aCallback && !aCmdOptions )
+        {
+        if ( !aCmdName.Compare( KBSCmdInitialize ) )
+            {
+            InitializeL( aInParamList, aOutParamList );
+            }
+        else if ( !aCmdName.Compare( KBSCmdForwardActivationEvent ) )
+            {
+            ForwardActivationEventL( aInParamList, aOutParamList );
+            }
+        else if ( !aCmdName.Compare( KBSCmdHandleBackCommand ) )
+            {
+            HandleBackCommandL( aInParamList, aOutParamList );
+            }
+        else
+            {
+            HandleErrorL( aOutParamList, KErrNotSupported );
+            }
+        }
+    else
+        {
+        HandleErrorL( aOutParamList, KErrNotSupported );
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// Closes the interface
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::Close()
+    {
+    delete this;
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::InitializeL(
+    const CLiwGenericParamList& aInParamList,
+    CLiwGenericParamList& aOutParamList )
+    {
+    TInt32 appUid;
+    TInt err = GetParam( aInParamList, KBSInParamAppUid, appUid );
+    if ( err == KErrNone )
+        {
+        TInt retVal = iBSClient.Initialize( TUid::Uid( appUid ) );
+        HandleResultL( aOutParamList, retVal );
+        return;
+        }
+
+    HandleErrorL( aOutParamList, err );
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::ForwardActivationEventL(
+    const CLiwGenericParamList& aInParamList,
+    CLiwGenericParamList& aOutParamList )
+    {
+    TPtrC8 state;
+    TInt err = GetParam( aInParamList, KBSInParamState, state );
+    if ( err == KErrNone )
+        {
+        TBool enter;
+        err = GetParam( aInParamList, KBSInParamEnter, enter );
+        if ( err == KErrNone )
+            {
+            TInt retVal = iBSClient.ForwardActivationEvent( state, enter );
+            HandleResultL( aOutParamList, retVal );
+            return;
+            }
+        }
+
+    HandleErrorL( aOutParamList, err );
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::HandleBackCommandL(
+    const CLiwGenericParamList& aInParamList,
+    CLiwGenericParamList& aOutParamList )
+    {
+    TPtrC8 state;
+    TInt err = GetParam( aInParamList, KBSInParamState, state );
+
+    TBool checkOnly(EFalse);
+    if ( GetParam( aInParamList, KBSInParamCheckOnly, checkOnly ) != KErrNone )
+        {
+        // use default value if parameter isn't correct
+        checkOnly = EFalse;
+        }
+
+    if ( err == KErrNone )
+        {
+        TInt retVal = iBSClient.HandleBackCommand( state, checkOnly );
+        HandleResultL( aOutParamList, retVal );
+        return;
+        }
+
+    HandleErrorL( aOutParamList, err );
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::HandleErrorL( CLiwGenericParamList& aOutParamList,
+    const TInt aError )
+    {
+    aOutParamList.AppendL( TLiwGenericParam( EGenericParamError,
+        TLiwVariant( aError ) ) );
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+void CBSServiceInterface::HandleResultL( CLiwGenericParamList& aOutParamList,
+    const TInt aResult )
+    {
+    TLiwGenericParam statusInfo;
+    statusInfo.SetNameAndValueL( KBSOutParamStatusInfo, TLiwVariant( aResult ) );
+    aOutParamList.AppendL( statusInfo );
+    statusInfo.Reset( );
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+TInt CBSServiceInterface::GetParam( const CLiwGenericParamList& aInParamList,
+    const TDesC8& aParamName, TPtrC8& aPtr ) const
+    {
+    TInt errCode(KErrArgument);
+
+    const TLiwGenericParam* param= NULL;
+    TInt pos( 0);
+    param = aInParamList.FindFirst( pos, aParamName );
+    if ( param && (pos != KErrNotFound ) )
+        {
+        if ( param->Value().Get( aPtr ) )
+            {
+            errCode = KErrNone;
+            }
+        }
+
+    return errCode;
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+TInt CBSServiceInterface::GetParam( const CLiwGenericParamList& aInParamList,
+    const TDesC8& aParamName, TInt32& aNumber ) const
+    {
+    TInt errCode(KErrArgument);
+
+    const TLiwGenericParam* param= NULL;
+    TInt pos( 0);
+    param = aInParamList.FindFirst( pos, aParamName );
+    if ( param && (pos != KErrNotFound ) )
+        {
+        if ( param->Value().Get( aNumber ) )
+            {
+            errCode = KErrNone;
+            }
+        }
+
+    return errCode;
+    }
+
+// ---------------------------------------------------------------------------
+// 
+// ---------------------------------------------------------------------------
+//
+TInt CBSServiceInterface::GetParam( const CLiwGenericParamList& aInParamList,
+    const TDesC8& aParamName, TBool& aBool ) const
+    {
+    TInt errCode(KErrArgument);
+
+    const TLiwGenericParam* param= NULL;
+    TInt pos( 0);
+    param = aInParamList.FindFirst( pos, aParamName );
+    if ( param && (pos != KErrNotFound ) )
+        {
+        if ( param->Value().Get( aBool ) )
+            {
+            errCode = KErrNone;
+            }
+        }
+
+    return errCode;
+    }