--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/vtuis/lcvtplugin/inc/base/clcvtactiveexec.h Tue Aug 31 15:16:10 2010 +0300
@@ -0,0 +1,169 @@
+/*
+* 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: Asynchronous execution class for LC VT plugin.
+*
+*/
+
+
+
+#ifndef CLCVTACTIVEEXEC_H
+#define CLCVTACTIVEEXEC_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CLcVtActiveExec;
+
+// CLASS DECLARATION
+
+/**
+* Interface for asynchronous execution.
+*
+* @since Series 60 2.6
+*/
+class MLcVtActiveExec
+ {
+ 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(
+ CLcVtActiveExec& 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(
+ CLcVtActiveExec& aActiveExec,
+ TInt& aState,
+ const TInt aError ) = 0;
+
+ /**
+ * Cancels operation of specific state.
+ * @param aActiveExec active executor.
+ * @param aState state.
+ */
+ virtual void ActiveExecCancel(
+ CLcVtActiveExec& aActiveExec,
+ const TInt aState ) = 0;
+
+ /**
+ * Informs that operation has been finished.
+ * @param aActiveExec active executor.
+ * @param aInitialState initial state.
+ */
+ virtual void ActiveExecDone(
+ CLcVtActiveExec& aActiveExec,
+ const TInt aInitialState ) = 0;
+
+ };
+
+/**
+* Asynchronous execution class for LC VT plugin.
+*
+* @since Series 60 2.6
+*/
+class CLcVtActiveExec
+ : public CActive
+ {
+ public: // Constructors and destructor
+
+ /**
+ * Constructor.
+ * @param aPriority priority of the active object.
+ */
+ CLcVtActiveExec(
+ const TInt aPriority );
+
+ /**
+ * Destructor.
+ */
+ ~CLcVtActiveExec();
+
+ public: // New functions
+
+ /**
+ * Starts execution.
+ * @param aStartState initial state.
+ * @param aExec executor.
+ */
+ void Start(
+ TInt aStartState,
+ MLcVtActiveExec& 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;
+
+ protected: // 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.
+ MLcVtActiveExec* iActiveExec;
+
+ // Initial state.
+ TInt iInitialState;
+
+ // Current state.
+ TInt iCurrentState;
+
+ // Next state.
+ TInt iNextState;
+
+ };
+
+#endif // CLCVTACTIVEEXEC_H
+
+// End of File