--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtuis/videotelui/inc/features/volume/cvtuivolumecontrol.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,118 @@
+/*
+* Copyright (c) 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:  Volume control adjusts engine side volume values.
+*
+*/
+
+
+
+#ifndef CVTUIVOLUMECONTROL_H
+#define CVTUIVOLUMECONTROL_H
+
+
+#include    <e32base.h>
+#include    <mvtengcommandobserver.h>
+#include    <mvtengaudio.h>
+
+class MVtEngCommandHandler;
+class MVtUiEngineCommandManager;
+class CVtUiFeatureManager;
+
+
+/**
+*  Volume control adjusts engine side volume values.
+*
+*  @since Series 60 v5.0
+*/
+class CVtUiVolumeControl
+    : public CBase,
+      private MVtEngCommandObserver
+    {
+    public: // Constructors and destructor
+
+    // Type for volume settings.
+    typedef MVtEngAudio::TVtEngOutputVolume TVolume;
+
+    /**
+    * Constructor.
+    *
+    * @param aSelfPtr optional pointer to itself.
+    * @param aCommandHandler command handler.
+    * @param aAudio audio interface.
+    * @param aCommandManager command manager.
+    * @param aFeatureManager Reference to feature manager.
+    */
+    CVtUiVolumeControl(
+        MVtEngCommandHandler& aCommandHandler,
+        MVtEngAudio& aAudio,
+        MVtUiEngineCommandManager& aCommandManager,
+        CVtUiFeatureManager& aFeatureManager );
+
+    /*
+    * 2nd phase constructor
+    */
+    void ConstructL();
+
+    /**
+    * Destructor.
+    */
+    ~CVtUiVolumeControl();
+
+public: // New functions
+
+    // Adjust volume to new value
+    void AdjustVolumeL( TVolume aVolume );
+        
+private:
+
+    /**
+    * @see MVtEngCommandObserver::HandleVTCommandPerformedL.
+    */
+    virtual void HandleVTCommandPerformedL(
+        TVtEngCommandId aCommand,
+        const TInt aError );
+    
+    // Checks if volume is changed in slider
+    TBool IsVolumeChangedL();
+
+private:
+
+    // Reference to command handler.
+    MVtEngCommandHandler& iCommandHandler;
+
+    // Reference to audio interface.
+    MVtEngAudio& iAudio;
+
+    // Reference to command manager.
+    MVtUiEngineCommandManager& iCommandManager;
+
+    // ETrue if command is performed.
+    TBool iCommandPerformed;
+
+    // Volume being updated to engine.
+    TVolume iVolume;
+
+    // Volume pointer descriptor.
+    TPtrC8 iVolumePtr;
+    
+    // Reference to featuremanager
+    CVtUiFeatureManager& iFeatureManager;
+    
+    // Is control adjusting volume
+    TBool iIsActive;
+    };
+
+#endif      // CVtUiVolumeControl_H
+
+// End of File