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00001 /**************************************************************************** 00002 ** 00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 00004 ** All rights reserved. 00005 ** Contact: Nokia Corporation (directui@nokia.com) 00006 ** 00007 ** This file is part of systemui. 00008 ** 00009 ** If you have questions regarding the use of this file, please contact 00010 ** Nokia at directui@nokia.com. 00011 ** 00012 ** This library is free software; you can redistribute it and/or 00013 ** modify it under the terms of the GNU Lesser General Public 00014 ** License version 2.1 as published by the Free Software Foundation 00015 ** and appearing in the file LICENSE.LGPL included in the packaging 00016 ** of this file. 00017 ** 00018 ****************************************************************************/ 00019 00020 #ifndef APPLICATIONCONTEXT_H 00021 #define APPLICATIONCONTEXT_H 00022 00023 #include <QObject> 00024 00025 class ContextItem; 00026 00032 class ApplicationContext 00033 { 00034 public: 00044 virtual ContextItem *createContextItem(const QString &key) = 0; 00045 }; 00046 00052 class ContextItem: public QObject 00053 { 00054 Q_OBJECT 00055 00056 public: 00061 virtual QVariant value() const = 0; 00062 00066 virtual void subscribe() const = 0; 00067 00071 virtual void unsubscribe() const = 0; 00072 00073 signals: 00077 void contentsChanged(); 00078 }; 00079 00080 #endif // APPLICATIONCONTEXT_H
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