--- a/usbuis/usbui/USBClassChangeUIPlugin/inc/USBDeviceStateWatcher.h Mon Jun 21 22:40:15 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,158 +0,0 @@
-/*
-* Copyright (c) 2007 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: Device state watcher class.
- *
-*/
-
-
-#ifndef USBDEVICESTATEWATCHER_H
-#define USBDEVICESTATEWATCHER_H
-
-// INCLUDE FILES
-#include <e32base.h>
-#include <usbman.h>
-
-/**
- * A callback interface for informing about device state changes
- */
-class MUSBDeviceStateObserver
- {
- public:
-
- /**
- * Informs the observer that USB device state has changed.
- * @param aPreviousState previous device state.
- * @param aCurrentState current device state.
- */
- virtual void DeviceStateChanged(TUsbDeviceState aPreviousState,
- TUsbDeviceState aCurrentState) = 0;
- };
-
-// CLASS DECLARATION
-
-/**
- * Class that listens for USB device state changes and notifies
- * the observer.
- */
-class CUSBDeviceStateWatcher : public CActive
- {
- public: // Constructors and destructor
-
- /**
- * Two-phased constructor. Uses existing usb manager session.
- * Note that it's not possible (and usually not necessary) to attach
- * more than one USBDeviceStateWatcher to the same session.
- *
- * @param aObserver Reference to device state observer.
- * @param aUsbMan Existing usb manager session.
- * @return Pointer to created object.
- */
- static CUSBDeviceStateWatcher* NewL(MUSBDeviceStateObserver& aObserver,
- RUsb& aUsbMan);
-
- /**
- * Two-phased constructor. Creates its own usb manager session.
- *
- * @param aObserver Reference to device state observer.
- * @return Pointer to created object.
- */
- static CUSBDeviceStateWatcher* NewL(MUSBDeviceStateObserver& aObserver);
-
- /**
- * Destructor.
- */
- virtual ~CUSBDeviceStateWatcher();
-
- public: // from base class CActive
-
- /**
- * From CActive.
- * This method is called when device state has changed.
- */
- void RunL();
-
- /**
- * From CActive.
- * In this implementation this method should never be called.
- *
- * @param aError the leave code
- * @return KErrNone
- */
- TInt RunError(TInt aError);
-
- /**
- * From CActive
- * If there is outstanding request pending when Cancel() is called then
- * this method must cancel request.
- */
- void DoCancel();
-
- private:
-
- /**
- * Private constructor.
- *
- * @param aObserver Reference to MUSBDeviceStateObserver.
- */
- CUSBDeviceStateWatcher(MUSBDeviceStateObserver& aObserver);
-
- /**
- * 2nd phase constructor.
- * Creates its own usb manager session.
- */
- void ConstructL();
-
- /**
- * 2nd phase constructor.
- * Uses existing usb manager session.
- *
- * @param aUsbMan Existing usb manager session.
- */
- void ConstructL(RUsb& aUsbMan);
-
- /**
- * Code shared by all ConstructL methods.
- */
- void CommonConstructL();
-
- // Disable default C++ behavior that makes no sense
- // for this implementation.
- CUSBDeviceStateWatcher();
- CUSBDeviceStateWatcher(const CUSBDeviceStateWatcher&);
- CUSBDeviceStateWatcher& operator=(const CUSBDeviceStateWatcher&);
-
- private: // Data
-
- /**
- * Handle to Usb Manager
- */
- RUsb iUsbMan;
-
- /**
- * Current device state
- */
- TUsbDeviceState iCurrentState;
-
- /**
- * Last known device state
- */
- TUsbDeviceState iPreviousState;
-
- /**
- * Refernce to the observer
- */
- MUSBDeviceStateObserver& iObserver;
- };
-
-#endif // USBDEVICESTATEWATCHER_H