/*
* Copyright (c) 2008-2009 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:
*
*/
/**
@file
@internalComponent
*/
#ifndef EVENTHANDLER_H
#define EVENTHANDLER_H
#include <e32base.h>
#include <e32msgqueue.h>
#include "msmm_internal_def.h"
#include "subcommandbase.h"
#include "handlerinterface.h"
class MMsmmSrvProxy;
class THostMsErrData;
// USB MS sub-commands queue class
// Intend to be used in event handler internally.
NONSHARABLE_CLASS(RSubCommandQueue)
{
public:
inline TInt Count() const;
// Push a sub-command into the queue and transfer the owership
// to the queue
void PushL(TSubCommandBase* aCommand);
// Pop the head entity from the queue and destroy it
void Pop();
// Insert a sub-command sequence after head entities
void InsertAfterHeadL(TSubCommandBase* aCommand);
// Execute the head sub-comment
void ExecuteHeadL();
// Get a reference of head sub-command in queue
TSubCommandBase& Head();
// Destory all entities and release the memory of queue
void Release();
private:
RPointerArray<TSubCommandBase> iQueue;
};
NONSHARABLE_CLASS (CDeviceEventHandler) :
public CActive,
public MUsbMsEventHandler,
public MUsbMsSubCommandCreator
{
public:
virtual ~CDeviceEventHandler();
static CDeviceEventHandler* NewL(MMsmmSrvProxy& aServer);
static CDeviceEventHandler* NewLC(MMsmmSrvProxy& aServer);
inline const TDeviceEvent& Event() const;
// From MUsbMsSubCommandCreator
void CreateSubCmdForRetrieveDriveLetterL(TInt aLogicalUnitCount);
void CreateSubCmdForMountingLogicalUnitL(TText aDrive, TInt aLuNumber);
void CreateSubCmdForSaveLatestMountInfoL(TText aDrive, TInt aLuNumber);
// From MUsbMsEventHandler
void Start();
void Complete(TInt aError = KErrNone);
TRequestStatus& Status() const;
/** Send an event to handler and start to secure handler.
* Intends to be used by CDeviceEventQueue class.
*/
void HandleEventL(TRequestStatus& aStatus, const TDeviceEvent& aEvent);
/** Reset event handler to be ready for the next event
*
*/
void ResetHandler();
inline const THostMsErrData& ErrNotiData() const;
private:
// CActive implementation
void DoCancel();
void RunL();
TInt RunError(TInt aError);
private:
CDeviceEventHandler(MMsmmSrvProxy& aServer);
void ConstructL();
// Create sub-commands based on a particular USB MS event
void CreateSubCmdForDeviceEventL();
void CreateSubCmdForAddingUsbMsFunctionL();
void CreateSubCmdForRemovingUsbMsDeviceL();
void ResetHandlerData();
void ResetHandlerError();
void CompleteClient(TInt aError = KErrNone);
private:
MMsmmSrvProxy& iServer;
TDeviceEvent iIncomingEvent;
RSubCommandQueue iSubCommandQueue;
TRequestStatus* iEvtQueueStatus; // No ownership
THostMsErrData* iErrNotiData; // Error notification - Owned
};
#include "eventhandler.inl"
#endif // EVENTHANDLER_H
// End of file