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93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*
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* PluginFactory.h
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*
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* Copyright (c) 2015 Lukas W <lukaswhl/at/gmail.com>
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*
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* This file is part of LMMS - http://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef PLUGINFACTORY_H
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#define PLUGINFACTORY_H
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#include <QtCore/QFileInfo>
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#include <QtCore/QList>
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#include "export.h"
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#include "Plugin.h"
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class QLibrary;
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class EXPORT PluginFactory
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{
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public:
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struct PluginInfo
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{
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PluginInfo() : library(nullptr), descriptor(nullptr) {}
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const QString name() const;
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QFileInfo file;
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QLibrary* library;
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Plugin::Descriptor* descriptor;
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bool isNull() const {return library == 0;}
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};
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typedef QList<PluginInfo*> PluginInfoList;
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typedef QMultiMap<Plugin::PluginTypes, Plugin::Descriptor*> DescriptorMap;
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PluginFactory();
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~PluginFactory();
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/// Returns the singleton instance of PluginFactory. You won't need to call
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/// this directly, use pluginFactory instead.
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static PluginFactory* instance();
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/// Returns a list of all found plugins' descriptors.
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const Plugin::DescriptorList descriptors() const;
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const Plugin::DescriptorList descriptors(Plugin::PluginTypes type) const;
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/// Returns a list of all found plugins' PluginFactory::PluginInfo objects.
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const PluginInfoList& pluginInfos() const;
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/// Returns a plugin that support the given file extension
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const PluginInfo pluginSupportingExtension(const QString& ext);
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/// Returns the PluginInfo object of the plugin with the given name.
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/// If the plugin is not found, an empty PluginInfo is returned (use
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/// PluginInfo::isNull() to check this).
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const PluginInfo pluginInfo(const char* name) const;
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/// When loading a library fails during discovery, the error string is saved.
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/// It can be retrieved by calling this function.
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QString errorString(QString pluginName) const;
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public slots:
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void discoverPlugins();
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private:
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DescriptorMap m_descriptors;
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PluginInfoList m_pluginInfos;
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QMap<QString, PluginInfo*> m_pluginByExt;
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QHash<QString, QString> m_errors;
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static PluginFactory* s_instance;
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};
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#define pluginFactory PluginFactory::instance()
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#endif // PLUGINFACTORY_H
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