usbengines/usbotgwatcher/inc/cusbnotifmanager.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:48:40 +0200
branchRCL_3
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permissions -rw-r--r--
Revision: 201007 Kit: 201008
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/*
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 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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 * All rights reserved.
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 * This component and the accompanying materials are made available
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 * under the terms of "Eclipse Public License v1.0"
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 * which accompanies this distribution, and is available
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 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
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 *
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 * Initial Contributors:
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 * Nokia Corporation - initial contribution.
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 *
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 * Contributors:
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 *
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 * Description:  Manages notifiers
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 *
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 */
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#ifndef C_USBNOTIFMANAGER_H
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#define C_USBNOTIFMANAGER_H
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#include <e32base.h>
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// forward declaration
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class CUsbNotifier;
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class CUsbIndicatorNotifier;
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class CUsbOtgWatcher;
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// pause warning is visible for (ms)
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const TUint KPauseForWarnings = 1000000; // 1 sec
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/**
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 * Observer has to implement this interface to get feedback on user action
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 * Notification received when Whait notified completed (cancelled ot key pressed) 
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 */
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NONSHARABLE_CLASS( MWaitNotifierObserver)
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    {
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public:
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    /**
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     * feedback to observer
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     * @param aFeedback how notifier comleted 
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     */
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    virtual void WaitNotifierCompletedL(TInt aFeedback) = 0;
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    };
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/**
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 * this class contains information for wait notifier
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 * once notifier gets response from user, notif manager will send feedback data to caller
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 */
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NONSHARABLE_CLASS( CWaitNotifierInfo ) : public CBase
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    {
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public:
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    /**
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     * 2-phase construction
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     * @param aWaitNotifier owner
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     * aObserver will receive notification when completed 
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     */
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    static CWaitNotifierInfo* NewL(CUsbNotifier* aWaitNotifier,
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            MWaitNotifierObserver& aObserver);
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    /**
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     * Destructor
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     */
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    virtual ~CWaitNotifierInfo();
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    /**
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     * gets wait notifier
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     */
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    CUsbNotifier* WaitNotifier() const;
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    /**
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     * gets observer
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     */
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    MWaitNotifierObserver* Observer() const;
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private:
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    /**
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     * Default constructor
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     * @param aWaitNotifier Notifier
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     * @param aObserver Observer
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     */
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    CWaitNotifierInfo(CUsbNotifier* aWaitNotifier,
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            MWaitNotifierObserver& aObserver);
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    /**
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     * 2nd phase construction
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     */
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    void ConstructL();
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private:
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    /**
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     * notifier
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     * owns
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     */
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    CUsbNotifier* iWaitNotifier;
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    /**
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     * observer
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     * not owns
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     */
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    MWaitNotifierObserver& iObserver;
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    };
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/**
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 *  Function of the class is own and share RNotifier, own list of CWaitNotifier(s),
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 *	show notifiers, which are synchronous, and cancel it with a delay 
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 */
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class CUsbNotifManager : public CBase
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    {
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    friend class CUsbNotifManager;
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public:
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    /**
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     * 2phase construction
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     * @param aOtgWatcher OtgWatcher is a parent class
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     */
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    static CUsbNotifManager* NewL(CUsbOtgWatcher& aOtgWatcher);
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    /**
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     * Destructor
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     */
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    virtual ~CUsbNotifManager();
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    /**
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     * Shows notifier
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     * @param aCat Category
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     * @param aNotifId notifier id
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     * @param aObserver will receive notifications
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     */
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    void ShowNotifierL(TUid aCat, TUint aNotifId,
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            MWaitNotifierObserver* aObserver);
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    /**
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     * Closes and deletes all the notifiers
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     */
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    void CloseAllNotifiers();
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0
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    /** 
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     * Calls back Notifier show is over
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     * @param aWaitNotifier wait notifier
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     * @param aResult result (was any errors or not)
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     * @param aFeedback user press (cancel or any other) 
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     */
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    void NotifierShowCompletedL(CUsbNotifier& aWaitNotifier, TInt aResult,
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            TInt aFeedback);
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private:
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    /**
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     * Default construction
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     * @param aOtgWatcher otg watcher (parent class)
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     */
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    CUsbNotifManager();
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    /**
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     * Second phase construction
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     */
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    void ConstructL(CUsbOtgWatcher& aOtgWatcher);
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private:
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    // data
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    /**
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     * RNotifier API
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     */
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    RNotifier iNotifier;
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    /**
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     * List of notifiers waiting for user action
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     */
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    RPointerArray<CWaitNotifierInfo> iWaitNotifiers;
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    /**
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     * Own
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     * USB indicator
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     */
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    CUsbIndicatorNotifier* iIndicatorNotifier;
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    };
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#endif // C_USBNOTIFMANAGER_H