voicerecorder/UtilsInc/VRUSBStateHanlder.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 15:43:26 +0300
branchRCL_3
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/*
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* Copyright (c) 2002-2006 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: 
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*     CVRUSBStateHanlder declaration
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*     
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*
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*/
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#ifndef VRUSBSTATEHANLDER_H
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#define VRUSBSTATEHANLDER_H
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#include <e32base.h>	// For CActive, link against: euser.lib
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#include <e32std.h>		// For RTimer, link against: euser.lib
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#include <e32property.h> 
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//#include "DummyUSBState.h" // for dummy testing
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class MVRUSBStateObserver
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    {
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public:
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    // Constructors and destructor
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    virtual TInt HandleUsbPlugInL() = 0;
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    virtual TInt HandleUsbPlugOutL() = 0;
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    };
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class CVRUSBStateHanlder : public CActive
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    {
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public:
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    // Cancel and destroy
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    ~CVRUSBStateHanlder();
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    IMPORT_C static CVRUSBStateHanlder* NewL(MVRUSBStateObserver* aObserver);
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public:
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    IMPORT_C static TBool IsUsbActive();
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private:
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    // C++ constructor
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    CVRUSBStateHanlder(MVRUSBStateObserver* aObserver);
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    // Second-phase constructor
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    void ConstructL();
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private:
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    // From CActive
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    // Handle completion
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    void RunL();
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    // How to cancel me
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    void DoCancel();
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    // Override to handle leaves from RunL(). Default implementation causes
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    // the active scheduler to panic.
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    TInt RunError(TInt aError);
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    void StartL();
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private:
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#ifdef DUMMY_USB_TESTING
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    RTimer iTimer; // Provides async timing service, for dummy testing
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    TInt isUSBActive;
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#else
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    RProperty iProperty;
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#endif
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    MVRUSBStateObserver* iObserver;    
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    enum TUSBConnectionStatus 
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        { 
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        EStateUninitialized, 
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        EStateConnected, 
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        EStateDisConnected
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        }; 
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    TUSBConnectionStatus iConnectionStatus;
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    };
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#endif // VRUSBSTATEHANLDER_H