1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
2 // All rights reserved.
3 // This component and the accompanying materials are made available
4 // under the terms of "Eclipse Public License v1.0"
5 // which accompanies this distribution, and is available
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
8 // Initial Contributors:
9 // Nokia Corporation - initial contribution.
16 #ifndef __CALPROGRESSCALLBACK_H__
17 #define __CALPROGRESSCALLBACK_H__
21 class MCalProgressCallBack
22 /** A call back class to show the progress of long-running operations.
24 When a long-running operation is carried out on the instance view or the entry
25 view, this class is used to signal its progress, and when the function is complete.
33 /** Progress callback.
35 This calls the observing class with the percentage complete of the current operation.
37 @param aPercentageCompleted The percentage complete. */
38 virtual void Progress(TInt aPercentageCompleted) = 0;
40 /** Progress callback.
42 This calls the observing class when the current operation is finished.
44 @param aError The error if the operation failed, or KErrNone if successful. */
45 virtual void Completed(TInt aError) = 0;
48 Asks the observing class whether progress callbacks are required. This
49 is called once only to check if callbacks are enabled.
51 @return If the observing class returns EFalse, then the Progress() function will not be called.
53 virtual TBool NotifyProgress() = 0;
56 #endif // __CALPROGRESSCALLBACK_H__