taskswitcher/utils/inc/tsdataobserver.h
author Jaakko Haukipuro (Nokia-MS/Oulu) <Jaakko.Haukipuro@nokia.com>
Thu, 16 Sep 2010 12:11:40 +0100
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/*
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* Copyright (c) 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:
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*
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*/
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#ifndef DATAOBSERVER_H
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#define DATAOBSERVER_H
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#include <e32base.h>
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class MTsDataObserver {
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public:
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    virtual void DataChanged() =0;
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};
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class CTsDataObserver: public CBase,
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                       public MTsDataObserver
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{
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public:
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    virtual void Cancel(const RMessage2& reason) =0;
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    virtual TBool IsParent(const CSession2 *session) =0;
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};
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class MTsDataObserverStorage
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{
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public:
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    virtual void PushL(CTsDataObserver*) =0;
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    virtual void Pop(CTsDataObserver*) =0;
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    virtual void Cancel(const RMessage2& reason) =0;
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    virtual void Invalidate(const CSession2* session) =0; 
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};
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#endif //DATAOBSERVER_H