--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/usbho/t_usbdi/inc/UsbClientStateWatcher.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,197 @@
+#ifndef __USB_CLIENT_STATE_WATCHER_H
+#define __USB_CLIENT_STATE_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 UsbClientStateWatcher.h
+* @internalComponent
+* 
+*
+*/
+
+
+
+#include <e32base.h>
+#include <d32usbc.h>
+#include "testdebug.h"
+
+namespace NUnitTesting_USBDI
+	{
+	
+/**
+This class describes an interface class that observers state changes in the client
+*/
+class MUsbClientStateObserver
+	{
+public:
+/**
+Called when the host has changed the state of the client device (e.g. to suspended)
+@param aNewState the new state of the device configured by the host
+@param aChangeCompletionCode the request completion code
+*/
+	virtual void StateChangeL(TUsbcDeviceState aNewState,TInt aChangeCompletionCode) = 0;
+	};
+
+/**
+This class describes an observer that gets notified when the host selects an alternate setting
+*/
+class MAlternateSettingObserver
+	{
+public:
+/**
+Called when the host selects an alternate interface setting
+@param aAlternateInterfaceSetting the alternate interface setting number
+*/
+	virtual void AlternateInterfaceSelectedL(TInt aAlternateInterfaceSetting) = 0;
+	};
+
+/**
+This class represents a watcher of USB client device states
+@internal
+*/
+class CUsbClientStateWatcher : public CActive
+	{
+public:
+/**
+Factory two-phase construction
+@param aUsbClientDriver a referrence to a USB client driver interface object
+*/
+	static CUsbClientStateWatcher* NewL(RDevUsbcClient& aClientDriver,MUsbClientStateObserver& aStateObserver);
+
+/**
+Destructor
+*/
+	~CUsbClientStateWatcher();
+	
+private:
+
+/**
+Constructor, builds a USB client state change watcher
+@param aUsbClientDriver the referrence to the USB client driver
+*/
+	CUsbClientStateWatcher(RDevUsbcClient& aClientDriver,MUsbClientStateObserver& aStateObserver);
+
+/**
+2nd phase construction
+*/
+	void ConstructL();
+
+private: // from CActive
+
+/**
+Cancels the notification of device state changes
+*/
+	void DoCancel();
+	
+/**
+Handles any Leave errors from this AO as it receives notification
+of state changes
+@param aError the leave code error from RunL
+@return KErrNone (currently)
+*/
+	TInt RunError(TInt aError);
+	
+/**
+Code that is scheduled when this AO completes
+*/
+	void RunL();
+
+private:
+/**
+The referrence to the USB client driver
+*/
+	RDevUsbcClient& iClientDriver;
+	
+/**
+The current state of the USB device (integer value)
+*/
+	TUint iState;
+
+/**
+The observers for the state of the USB client
+*/	
+	MUsbClientStateObserver& iStateObserver;
+	};
+	
+	
+/**
+This class represents a watcher of Alternate interface selections
+@intenal
+*/
+class CAlternateInterfaceSelectionWatcher : public CActive
+	{
+public:
+/**
+Symbian construction of a watcher of alternate interface setting selections
+@param aClientDriver the channel to the client driver
+@param aObserver the observer of alternate interface setting selections
+*/
+	static CAlternateInterfaceSelectionWatcher* NewL(RDevUsbcClient& aClientDriver,MAlternateSettingObserver& aObserver);
+
+/**
+Destructor
+*/
+	~CAlternateInterfaceSelectionWatcher();
+
+private:
+
+/**
+Constructor, builds an object that watchers for selections of alternate interface settings
+@param aClientDriver the channel to the client driver
+@param aObserver the observer of alternate interface setting selections
+*/
+	CAlternateInterfaceSelectionWatcher(RDevUsbcClient& aClientDriver,MAlternateSettingObserver& aObserver);
+
+/**
+2nd phase construction
+*/
+	void ConstructL();
+
+private: // From CActive
+
+/**
+*/
+	void DoCancel();
+	
+/**
+*/
+	void RunL();
+	
+/**
+*/
+	TInt RunError(TInt aError);
+
+private:
+/**
+The referrence to the USB client driver
+*/
+	RDevUsbcClient& iClientDriver;
+		
+/**
+The current state of the USB device (integer value)
+*/
+	TUint iState;
+		
+/**
+The observer that will be notified when a host selects any alternate interface setting 
+that this watcher knows about
+*/
+	MAlternateSettingObserver& iObserver;
+	};
+
+	}
+
+#endif
+