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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
5 // which accompanies this distribution, and is available
6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
8 // Initial Contributors:
9 // Nokia Corporation - initial contribution.
16 #ifndef __CALPROGRESSCALLBACK_H__
17 #define __CALPROGRESSCALLBACK_H__
19 class MCalProgressCallBack
20 /** A call back class to show the progress of long-running operations.
22 When a long-running operation is carried out on the instance view or the entry
23 view, this class is used to signal its progress, and when the function is complete.
31 /** Progress callback.
33 This calls the observing class with the percentage complete of the current operation.
35 @param aPercentageCompleted The percentage complete. */
36 virtual void Progress(TInt aPercentageCompleted) = 0;
38 /** Progress callback.
40 This calls the observing class when the current operation is finished.
42 @param aError The error if the operation failed, or KErrNone if successful. */
43 virtual void Completed(TInt aError) = 0;
46 Asks the observing class whether progress callbacks are required. This
47 is called once only to check if callbacks are enabled.
49 @return If the observing class returns EFalse, then the Progress() function will not be called.
51 virtual TBool NotifyProgress() = 0;
54 #endif // __CALPROGRESSCALLBACK_H__