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diff --git a/pv/binding/inputoutput.hpp b/pv/binding/inputoutput.hpp
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+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#ifndef PULSEVIEW_PV_BINDING_INPUTOUTPUT_HPP
+#define PULSEVIEW_PV_BINDING_INPUTOUTPUT_HPP
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include "binding.hpp"
+
+#include <pv/prop/property.hpp>
+
+namespace sigrok {
+class Option;
+}
+
+namespace pv {
+namespace binding {
+
+/**
+ * A binding of glibmm variants for sigrok input and output options.
+ */
+class InputOutput : public Binding
+{
+public:
+	/**
+	 * Constructs a new @c InputOutput binding.
+	 * @param options the map of options to use as a template.
+	 */
+	InputOutput(
+		const std::map<std::string, std::shared_ptr<sigrok::Option>>
+			&options);
+
+	/**
+	 * Gets the map of selected options.
+	 * @return the options.
+	 */
+	const std::map<std::string, Glib::VariantBase>& options() const;
+
+private:
+	/**
+	 * A helper function to bind an option list to and enum property.
+	 * @param name the name of the property.
+	 * @param values the list of values.
+	 * @param getter the getter that will read the values out of the map.
+	 * @param setter the setter that will set the values into the map.
+	 */
+	std::shared_ptr<prop::Property> bind_enum(const QString &name,
+		const std::vector<Glib::VariantBase> &values,
+		prop::Property::Getter getter, prop::Property::Setter setter);
+
+private:
+	/**
+	 * The current map of options.
+	 */
+	std::map<std::string, Glib::VariantBase> options_;
+};
+
+} // binding
+} // pv
+
+#endif // PULSEVIEW_PV_BINDING_INPUTOUTPUT_H