--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtuis/videotelui/inc/CVtUiActiveExec.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,169 @@
+/*
+* Copyright (c) 2004 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:  Asynchronous execution class for Video Telephone application.
+*
+*/
+
+
+
+#ifndef CVTUIACTIVEEXEC_H
+#define CVTUIACTIVEEXEC_H
+
+//  INCLUDES
+#include    <e32base.h>
+
+// FORWARD DECLARATIONS
+class CVtUiActiveExec;
+
+// CLASS DECLARATION
+
+/**
+*  Interface for asynchronous execution.
+*
+*  @since Series 60 2.6
+*/
+class MVtUiActiveExec
+    {
+    public: // New functions
+
+        /**
+        * Starts execution of a command.
+        * @param aActiveExec active executor.
+        * @param aState state based on which execution can be started.
+        * @param aNextState next state.
+        * @param aRequest request status, which should be used if operation is 
+        *        asynchronous.
+        * @return ETrue if operation was synchronous, otherwise EFalse.
+        */
+        virtual TBool ActiveExecExecuteL( 
+            CVtUiActiveExec& aActiveExec,
+            const TInt aState, 
+            TInt& aNextState,
+            TRequestStatus& aRequest ) = 0; 
+
+        /**
+        * Decide whether to continue or not.
+        * @param aActiveExec active executor.
+        * @param aState current state, should be updated to new state.
+        * @param aError error code.
+        * @return ETrue if continued, EFalse if stopped.
+        */
+        virtual TBool ActiveExecContinue(
+            CVtUiActiveExec& aActiveExec,
+            TInt& aState, 
+            const TInt aError ) = 0;
+
+        /**
+        * Cancels operation of specific state.
+        * @param aActiveExec active executor.
+        * @param aState state.
+        */
+        virtual void ActiveExecCancel( 
+            CVtUiActiveExec& aActiveExec,
+            const TInt aState ) = 0;
+
+        /**
+        * Informs that operation has been finished.
+        * @param aActiveExec active executor.
+        * @param aInitialState initial state.
+        */
+        virtual void ActiveExecDone( 
+            CVtUiActiveExec& aActiveExec,
+            const TInt aInitialState ) = 0;
+
+    };
+
+/**
+*  Asynchronous execution class for Video Telephone application.
+*
+*  @since Series 60 2.6
+*/
+class CVtUiActiveExec 
+    : public CActive
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Constructor.
+        * @param aPriority priority of the active object.
+        */
+        CVtUiActiveExec(
+            const TInt aPriority );
+
+        /**
+        * Destructor.
+        */
+        ~CVtUiActiveExec();
+
+    public: // New functions
+
+        /**
+        * Starts execution.
+        * @param aStartState initial state.
+        * @param aExec executor.
+        */
+        void Start( 
+            TInt aStartState, 
+            MVtUiActiveExec& aExec );
+
+        /**
+        * Initial state of currently
+        * active operation.
+        *
+        * @return initial state, or KErrNotFound if no operation ongoing.
+        */
+        TInt InitialState() const;
+
+        /**
+        * Returns request status.
+        * @return request status.
+        */
+        TInt RequestStatus() const;
+
+    public: // Functions from base classes
+
+        /**
+        * @see CActive::RunL.
+        */
+        virtual void RunL();
+
+        /**
+        * @see CActive::DoCancel.
+        */
+        virtual void DoCancel();
+
+        /**
+        * @see CActive::RunError.
+        */
+        virtual TInt RunError( TInt aError );
+
+    private:
+
+        // Ref to active executor.
+        MVtUiActiveExec* iActiveExec;
+
+        // Initial state.
+        TInt iInitialState;
+
+        // Current state.
+        TInt iCurrentState;
+
+        // Next state.
+        TInt iNextState;
+
+    };
+
+#endif // CVTUIACTIVEEXEC_H
+
+// End of File