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+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001 Ludvig Strigeus
+ * Copyright (C) 2001-2003 The ScummVM project
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef COMMON_PLUGINS_H
+#define COMMON_PLUGINS_H
+
+#include "common/list.h"
+
+class Engine;
+class GameDetector;
+class OSystem;
+struct TargetSettings;
+
+/**
+ * Abstract base class for the plugin system.
+ * Subclasses for this can be used to wrap both static and dynamic
+ * plugins.
+ */
+class Plugin {
+public:
+ virtual void loadPlugin() {}
+ virtual void unloadPlugin() {}
+
+ virtual const char *getName() const = 0;
+ virtual int getVersion() const = 0;
+
+ virtual int countTargets() const;
+ virtual const TargetSettings *getTargets() const = 0;
+ virtual const TargetSettings *findTarget(const char *targetName) const;
+
+ virtual Engine *createInstance(GameDetector *detector, OSystem *syst) const = 0;
+};
+
+
+/** List of plugins. */
+typedef ScummVM::List<Plugin *> PluginList;
+
+
+/**
+ * Instances of this class manage all plugins, including loading them,
+ * making wrapper objects of class Plugin available, and unloading them.
+ *
+ * @todo Add support for dynamic plugins (this may need additional API, e.g. for a plugin path)
+ */
+class PluginManager {
+protected:
+ PluginList _plugins;
+
+public:
+ PluginManager();
+ ~PluginManager();
+
+ void loadPlugins();
+ void unloadPlugins();
+
+ const PluginList &getPlugins() { return _plugins; }
+};
+
+/**
+ * Global, shared plugin manager.
+ */
+extern PluginManager *g_pluginManager;
+
+#endif