99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/*
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* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef PLASMA_ENGINE_H
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#define PLASMA_ENGINE_H
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#include <QAtomic>
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#include <QHash>
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#include <QObject>
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#include <QStringList>
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#include <kdelibs_export.h>
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namespace Plasma
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{
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class DataSource;
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class DataVisualization;
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class KDE_EXPORT DataSource : public QObject
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{
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Q_OBJECT
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public:
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typedef QHash<QString, DataSource*> Dict;
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typedef QHash<QString, QVariant> Data;
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typedef QHash<QString, Dict> Grouping;
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explicit DataSource(QObject* parent = 0);
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virtual ~DataSource();
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QString name();
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signals:
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void data(const DataSource::Data&);
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private:
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class Private;
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Private* d;
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};
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class KDE_EXPORT DataEngine : public QObject
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{
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Q_OBJECT
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public:
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typedef QHash<QString, DataEngine*> Dict;
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DataEngine(QObject* parent);
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virtual ~DataEngine();
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virtual QStringList dataSources();
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void connect(const QString& source, DataVisualization* visualization);
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DataSource::Data query(const QString& source);
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void ref();
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void deref();
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bool isUsed();
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protected:
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virtual void init();
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virtual void cleanup();
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void setDataSource(const QString& source, const QVariant& value);
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void createDataSource(const QString& source,
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const QString& domain = QString());
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void removeDataSource(const QString& source);
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void clearAllDataSources();
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private:
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QAtomic m_ref;
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class Private;
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Private* d;
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};
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} // Plasma namespace
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#define K_EXPORT_PLASMA_ENGINE(libname, classname) \
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K_EXPORT_COMPONENT_FACTORY( \
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plasmaengine_##libname, \
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KGenericFactory<classname>("libplasmaengine_" #libname))
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#endif // multiple inclusion guard
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