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70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/* Copyright (C) 2015
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* swift project Community / Contributors
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*
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* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
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* directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
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* including this file, may be copied, modified, propagated, or distributed except according to the terms
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* contained in the LICENSE file.
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*/
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//! \file
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#ifndef BLACKMISC_PLUGINSTORAGEPROVIDER_H
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#define BLACKMISC_PLUGINSTORAGEPROVIDER_H
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#include "blackmisc/variant.h"
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#include <QObject>
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namespace BlackMisc
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{
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//! Interface for a plugin storage provider.
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//! It allows plugins to store any arbitrary data which can be packed into a \sa CVariant
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//! Every plugin shall have its own data area. This means mulitple plugins can store
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//! data under the same key without overwriting each other.
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class IPluginStorageProvider
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{
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public:
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//! Destructor
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virtual ~IPluginStorageProvider() {}
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//! Get plugin data stored for object and identified by key
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virtual CVariant getPluginData(const QObject *obj, const QString& key) const = 0;
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//! Store plugin data for object, identified by key and packed into value
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virtual void setPluginData(const QObject *obj, const QString& key, const CVariant &value) = 0;
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};
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//! Delegating class which can be directly used to access an \sa IPluginStorageProvider instance
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class CPluginStorageAware
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{
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public:
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//! \copydoc IPluginStorageProvider::getPluginData
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virtual CVariant getPluginData(const QObject *obj, const QString& key) const
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{
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return m_pluginStorageProvider->getPluginData(obj, key);
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}
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//! \copydoc IOwnAircraftProvider::ownAircraft
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virtual void setPluginData(const QObject *obj, const QString& key, const CVariant &value)
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{
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m_pluginStorageProvider->setPluginData(obj, key, value);
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}
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protected:
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//! Constructor
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CPluginStorageAware(IPluginStorageProvider *pluginStorageProvider) :
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m_pluginStorageProvider(pluginStorageProvider)
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{
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Q_ASSERT(pluginStorageProvider);
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}
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IPluginStorageProvider *m_pluginStorageProvider = nullptr; //!< access to object
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};
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} // namespace
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#endif
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