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/*------------------------------------------------------------------
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-
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* Software Name : UserEmulator
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* Version : v4.2.1309
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*
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* Copyright (c) 2009 France Telecom. All rights reserved.
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* This software is distributed under the License
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* "Eclipse Public License - v 1.0" the text of which is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* France Telecom
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*
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* Contributors:
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*------------------------------------------------------------------
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-
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* File Name: NotifyFileChange.h
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*
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* Created: 13/08/2009
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* Author(s): Marcell Kiss, Reshma Sandeep Das
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*
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* Description:
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* Active object implementation for notification of file changes
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*------------------------------------------------------------------
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-
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*
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*/
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#ifndef NOTIFYFILECHANGE__
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#define NOTIFYFILECHANGE__
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//System Includes
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#include <e32std.h>
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#include <e32base.h>
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#include <f32file.h>
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//User Includes
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#include "Constants.h"
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/**
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* MFileChangeObserver
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* Interface class for file change notifications
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*/
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class MFileChangeObserver
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{
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public:
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/**
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* FileChangeEventL
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* Callback function that notifies any file change events
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*/
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virtual void FileChangeEventL() = 0;
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};
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/**
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* CNotifyFileChange
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* Class implementation for notification of file changes
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*/
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class CNotifyFileChange : public CActive
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{
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public:
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/**
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* Static constructor
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* @param aObserver Reference to the MFileChangeObserver class
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* @param aPath file path
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* @return CNotifyFileChange* A pointer to the newly alocated CNotifyFileChange class.
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* NULL, if the class cannot be created
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*/
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static CNotifyFileChange* NewL( MFileChangeObserver& aObserver, const TDesC& aPath );
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/**
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* Static constructor
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* @param aObserver Reference to the MFileChangeObserver class
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* @param aPath file path
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* @return CNotifyFileChange* A pointer to the newly alocated CNotifyFileChange class.
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* NULL, if the class cannot be created
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*/
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static CNotifyFileChange* NewLC( MFileChangeObserver& aObserver, const TDesC& aPath );
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/**
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* Destructor
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*/
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virtual ~CNotifyFileChange();
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/**
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* Function that requests a notification of change to files or directories
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* @param aPath File path
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*/
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void RefreshPath(TDes& aPath);
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private: // from CActive
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/**
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* Cancels any outstanding request.
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*/
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void DoCancel();
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/**
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* Handles the completion of the active request.
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*/
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void RunL();
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/**
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* Handles a leave occurring in the request completion event handler CActive::RunL().
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*/
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TInt RunError(TInt aError);
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private:
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/**
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* Constructor
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* @param aObserver Reference to the MFileChangeObserver class
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* @param aPath file path
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*/
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CNotifyFileChange( MFileChangeObserver& aObserver,const TDesC& aPath );
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/**
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* ConstructL
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*/
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void ConstructL();
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private:
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/**
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* Reference to the MFileChangeObserver class
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*/
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MFileChangeObserver& iObserver;
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/**
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* Reference to file server session
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*/
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RFs iFs;
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/**
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* File path
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*/
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TDes16& iPath;
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};
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#endif //NOTIFYFILECHANGE__
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