diff -r f15ac8e65a02 -r 779871d1e4f4 vtuis/videotelui/src/commands/tvtuistates.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtuis/videotelui/src/commands/tvtuistates.cpp	Wed Sep 01 12:29:12 2010 +0100
@@ -0,0 +1,168 @@
+/*
+* Copyright (c) 2006 - 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:  Video UI states class.
+*
+*/
+
+
+#include <cvtengmodel.h>
+#include <mvtengcamerapreferences.h>
+#include <cvtlogger.h>
+
+#include "tvtuistates.h"
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::TVtUiStates
+// -----------------------------------------------------------------------------
+//
+TVtUiStates::TVtUiStates( CVtEngModel& aModel )
+    : iMediaState( aModel.Media(), aModel.CommandHandler() ), iAudioState( aModel ),
+    iModel( aModel ), iExecState( EExecStateStarting),
+    iCommandActivatingRefCount( 0 )
+    {
+    // get camera preferences
+    iCameraPref = static_cast<MVtEngCameraPreferences*>
+        ( iModel.Extension( KVtEngExtensionCameraPreferences ) );
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::Update
+// -----------------------------------------------------------------------------
+//
+void TVtUiStates::Update()
+    {
+    iMediaState.Update();
+    iAudioState.Update();
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::IsColorToneSettingAvailable
+// -----------------------------------------------------------------------------
+//
+TBool TVtUiStates::IsColorToneSettingAvailable() const
+    {
+    __VTPRINTENTER( "TVtUiStates.IsColorToneSettingAvailable" )
+    TUint32 supportedModes;
+    // Get supported whitebalance modes
+    if ( iCameraPref )
+    	{
+	    if ( iCameraPref->GetSupportedColorTones( supportedModes ) )
+	        {
+	        // error occured
+	        __VTPRINTEXIT( "TVtUiStates.IsColorToneSettingAvailableErr" )
+	        return EFalse;
+	        }
+    	}
+
+    // Clean the flag, flags that are possible are
+    // A bitfield of suported colortones
+    // ENormal         = 0x00,
+    // ESepia          = 0x01,
+    // EGrayscale      = 0x02,
+    // ENegative       = 0x04
+    supportedModes &= 0x07;
+
+    // If supported modes is 0 automatic,then return EFalse
+    return supportedModes;
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::IsWhiteBalanceSettingAvailable
+// -----------------------------------------------------------------------------
+//
+TBool TVtUiStates::IsWhiteBalanceSettingAvailable() const
+    {
+    __VTPRINTENTER( "TVtUiStates.IsWhiteBalanceSettingAvailable" )
+    TUint32 supportedModes;
+    // Get supported whitebalance modes
+    if ( iCameraPref )
+    	{
+	    if ( iCameraPref->GetSupportedWhiteBalanceModes( supportedModes ) )
+	        {
+	        // error occured
+	        __VTPRINTEXIT( "TVtUiStates.IsWhiteBalanceSettingAvailableErr" )
+	        return EFalse;
+	        }
+    	}
+    __VTPRINT2( DEBUG_GEN, "IsWhiteBalanceSettingAvailable=%d", supportedModes )
+    // If supported modes is 0 ,then return EFalse
+    __VTPRINTEXIT( "TVtUiStates.IsWhiteBalanceSettingAvailable2" )
+ 	return supportedModes;
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::IsContrastSettingAvailable
+// -----------------------------------------------------------------------------
+//
+TBool TVtUiStates::IsContrastSettingAvailable() const
+    {
+    __VTPRINTENTER( "TVtUiStates.IsContrastSettingAvailable" )
+    TBool ret( ETrue );
+    if ( iCameraPref )
+        {
+        TInt temp;
+	    ret = !iCameraPref->GetContrast( temp );
+        }
+    return ret;
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::IsBrightnessSettingAvailable
+// -----------------------------------------------------------------------------
+//
+TBool TVtUiStates::IsBrightnessSettingAvailable() const
+    {
+    __VTPRINTENTER( "TVtUiStates.IsBrightnessSettingAvailable" )
+    TBool ret( ETrue );
+    if ( iCameraPref )
+	     {
+	     TInt temp;
+	     ret = !iCameraPref->GetBrightness( temp );
+         }
+    return ret;
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::SetExecState
+// -----------------------------------------------------------------------------
+//
+void TVtUiStates::SetExecState( const TVtUiExecState aState )
+    {
+    iExecState = aState;
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::SetIsCommandActivating
+// -----------------------------------------------------------------------------
+//
+void TVtUiStates::SetIsCommandActivating( TBool aSet )
+    {
+    if ( aSet )
+        {
+        iCommandActivatingRefCount++;
+        }
+    else if ( iCommandActivatingRefCount > 0 )
+        {
+        iCommandActivatingRefCount--;    
+        }    
+    }
+
+// -----------------------------------------------------------------------------
+// TVtUiStates::ExecState
+// -----------------------------------------------------------------------------
+//
+TVtUiStates::TVtUiExecState TVtUiStates::ExecState() const
+    {
+    return iExecState;
+    }