--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wvuing/IMPSConnectionUI/OperationStepInc/MCnUiCntrlStep.h	Wed Sep 01 12:31:13 2010 +0100
@@ -0,0 +1,120 @@
+/*
+* 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:  Control step interface.
+*
+*/
+
+#ifndef __MCNUICNTRLSTEP_H
+#define __MCNUICNTRLSTEP_H
+
+//  INCLUDES
+#include <E32Base.h>
+
+
+//MACROS
+/**
+ * Macro for return value error handling.
+ * If returned value is something else than KErrNone,
+ * returns it. Else continues the execution.
+ */
+#define RETURN_IF_ERROR( op ) \
+        { \
+        TInt __err = op; \
+        if( __err != KErrNone ) \
+            { \
+            return __err;\
+            } \
+        } \
+     
+/**
+ * Completion codes for
+ * HandleCompleteL()
+ * @since 2.1
+ */
+enum TCnUiHandleCompleteStatus
+    {
+    ///<No special requirements from step. Teardown can be
+    ///<continued to next step.
+    ECnUiStepContinueTeardown = 0,
+
+    ///<Step wishes to restart processing from this
+    ///<step's RunStepL().
+    ECnUiRestartStep = 1
+    };
+
+
+
+// CLASS DECLARATION
+/**
+ * Control step interface.
+ *
+ * @since 2.1
+ */
+NONSHARABLE_CLASS( MCnUiCntrlStep )
+    {
+public: // New abstract operation step methods
+
+    /**
+     * Run step.
+     *
+     * Here the concrete step may do what so ever
+     * operations the step running needs.
+     *
+     * @since 2.1
+     */
+    virtual TInt RunStepL() = 0;
+
+
+    /**
+     * Called to handle failure in step execution.
+     *
+     * Failed step might have been either this same step
+     * or one of the subsequent ones.
+     *
+     * @since 2.1
+     */
+    virtual void UndoStepL() = 0;
+
+
+    /**
+     * Called to handle step running completion.
+     * This is called when the all steps have been
+     * processed successfully.
+     *
+     * If step wishes, it can restart the step execution
+     * from this step forward by returning the ECnUiRestartStep.
+     * Else the teardown is coninued to previous step.
+     *
+     * @since 2.1
+     * @return Completion status from TCnUiHandleCompleteStatus.
+     */
+    virtual TCnUiHandleCompleteStatus HandleCompleteL() = 0;
+
+
+public:  //Destructor
+
+    /**
+     * Inline destructor.
+     *
+     * Destroy trough this
+     * interface is possible.
+     */
+    virtual ~MCnUiCntrlStep() {};
+    };
+
+
+#endif      //  __MCNUICNTRLSTEP_H
+
+//  End of File
+