--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/usbho/t_usbdi/inc/BasicWatcher.h	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,155 @@
+#ifndef __BASIC_WATCHER_H
+#define __BASIC_WATCHER_H
+
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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 BasicWatcher.h
+* @internalComponent
+* 
+*
+*/
+
+
+
+#include <e32base.h>
+#include <d32usbdi.h>
+#include "testdebug.h"
+
+namespace NUnitTesting_USBDI
+	{
+
+
+/**
+This class watches for asynchronous completions and calls back
+*/
+class CBasicWatcher : public CActive
+	{
+public:
+	CBasicWatcher(const TCallBack& aCallBack,TInt aPriority=EPriorityStandard);
+	virtual ~CBasicWatcher();
+	
+	void CompleteNow(TInt aCompletionCode = KErrNone);
+	void StartWatching();
+	
+protected: // From CActive
+	void DoCancel();
+	void RunL();
+	TInt RunError(TInt aError);	
+
+private:
+	TCallBack iCallBack;
+	TInt iCompletionCode;
+	};
+
+
+
+
+
+/**
+This class describes a watcher for resumptions of interfaces
+*/
+class CInterfaceWatcher : public CActive
+	{
+public:
+	/**
+	Constructor, build 
+	@param aInterface the usb interface to suspend  
+	@param aCallBack the call back object to call once a resumption signal has happened
+	*/
+	CInterfaceWatcher(RUsbInterface& aInterface,const TCallBack& aCallBack)
+	:	CActive(EPriorityUserInput),
+		iUsbInterface(aInterface),
+		iResumeCallBack(aCallBack),
+		iCompletionCode(KErrNone)
+		{
+		CActiveScheduler::Add(this);
+		}
+
+	/**
+	Destructor
+	*/
+	~CInterfaceWatcher()
+		{
+		Cancel();
+		}
+
+	/**
+	Suspend the interface and watch for resumtions
+	*/
+	void SuspendAndWatch()
+		{
+		iUsbInterface.PermitSuspendAndWaitForResume(iStatus);
+		SetActive();
+		}
+
+	/**
+	Obtains the most recent completion code for the interface resumption
+	asynchronous action
+	@return the completion error code
+	*/
+	TInt CompletionCode() const
+		{
+		return iCompletionCode;
+		}
+
+protected: // From CActive
+
+	/**
+	*/
+	void DoCancel()
+		{
+		LOG_FUNC
+		iUsbInterface.CancelPermitSuspend();
+		}
+
+	
+	/**
+	*/
+	void RunL()
+		{
+		LOG_FUNC
+		iCompletionCode = iStatus.Int();
+		User::LeaveIfError(iResumeCallBack.CallBack());
+		}
+	
+	/**
+	*/
+	TInt RunError()
+		{
+		LOG_FUNC
+
+		return KErrNone;
+		}
+
+private:
+
+	/**
+	The USB interface resource
+	*/
+	RUsbInterface& iUsbInterface;
+
+	/**
+	*/
+	TCallBack iResumeCallBack;
+
+	/**
+	*/
+	TInt iCompletionCode;
+	};
+
+
+	}
+	
+#endif