/*

* 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

 @released

*/

#ifndef CUSBHOSTWATCHER_H

#define CUSBHOSTWATCHER_H

#include "usbhoststack.h"

#include <usb/usbshared.h>

enum TUsbHostMonitor

	{

	EHostEventMonitor 	= 0,

	EHostMessageMonitor = 1,

	ENumMonitor			= 2,

	};	

const TUint KHostEventMonitor = EHostEventMonitor;

const TUint KHostMessageMonitor = EHostMessageMonitor;

class MUsbHostObserver;

class CActiveUsbHostWatcher : public CActive

	{

public:

	CActiveUsbHostWatcher(RUsbHostStack& aUsbHostStack, 

						  MUsbHostObserver& aOwner,

						  TUint aWatcherId);

	virtual ~CActiveUsbHostWatcher();

public:

	virtual void Post() = 0;

protected: // from CActive

	virtual void RunL();

	virtual void DoCancel() = 0;

protected: // unowned

	RUsbHostStack& iUsbHostStack;

	MUsbHostObserver& iOwner;

	TUint iWatcherId;

	};

class CActiveUsbHostEventWatcher: public CActiveUsbHostWatcher

	{

public:

	static CActiveUsbHostEventWatcher* NewL(RUsbHostStack& aUsbHostStack, 

											MUsbHostObserver& aOwner,

											TDeviceEventInformation& aDeviceEventInfo);

	virtual ~CActiveUsbHostEventWatcher();

private:

	CActiveUsbHostEventWatcher(RUsbHostStack& aUsbHostStack, 

							   MUsbHostObserver& aOwner,

							   TDeviceEventInformation& aHostEventInfo);

private: // from CActive

	virtual void DoCancel();

public:

	// from CActiveUsbHostWatcher

	virtual void Post();

private:

	TDeviceEventInformation& iHostEventInfo;

};

class CActiveUsbHostMessageWatcher: public CActiveUsbHostWatcher

	{

public:

	static CActiveUsbHostMessageWatcher* NewL(RUsbHostStack& aUsbHostStack, 

											  MUsbHostObserver& aOwner,

											  TInt& aHostMessage);

	virtual ~CActiveUsbHostMessageWatcher();

private:

	CActiveUsbHostMessageWatcher(RUsbHostStack& aUsbHostStack, 

								 MUsbHostObserver& aOwner,

								 TInt& aHostMessage);

private: // from CActive

	virtual void DoCancel();

public:

	// from CActiveUsbHostWatcher

	virtual void Post();

private:

	TInt& iHostMessage;

	};

#endif //CUSBHOSTWATCHER_H