--- /dev/null
+//
+// Created by mfritzsc on 7/28/17.
+//
+
+#ifndef TMCAGLWM_CONTROLLER_HOOKS_HPP
+#define TMCAGLWM_CONTROLLER_HOOKS_HPP
+
+#include <cstdint>
+
+namespace wm {
+
+struct App;
+
+struct controller_hooks {
+ struct App *app;
+
+ void surface_created(uint32_t surface_id);
+
+ void surface_removed(uint32_t surface_id);
+};
+
+} // namespace wm
+
+#endif //TMCAGLWM_CONTROLLER_HOOKS_HPP