2 files changed, 93 insertions, 0 deletions
diff --git a/src/utils/activatable.hpp b/src/utils/activatable.hpp
new file mode 100644
index 00000000..0142ee0d
--- /dev/null
+++ b/src/utils/activatable.hpp
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+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ACTIVATABLE_HPP
+#define ACTIVATABLE_HPP
+
+namespace usdx
+{
+    class Activatable
+	{
+	public:
+		virtual void enable(void) = 0;
+		virtual void disable(void) = 0;
+	};
+};
+
+#endif
diff --git a/src/utils/activator.hpp b/src/utils/activator.hpp
new file mode 100644
index 00000000..7384b2a8
--- /dev/null
+++ b/src/utils/activator.hpp
@@ -0,0 +1,55 @@
+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ACTIVATOR_HPP
+#define ACTIVATOR_HPP
+
+#include <boost/noncopyable.hpp>
+
+namespace usdx
+{
+	template<typename Activatable>
+    class Activator : public boost::noncopyable
+	{
+	private:
+		Activatable* activatable;
+	public:
+		Activator(Activatable* activatable)
+			: activatable(activatable)
+		{
+			if (activatable) {
+				activatable->enable();
+			}
+		}
+
+		virtual ~Activator()
+		{
+			if (activatable) {
+				activatable->disable();
+			}
+		}
+	};
+};
+
+#endif