1 files changed, 58 insertions, 0 deletions
diff --git a/src/server/events/Undo.hpp b/src/server/events/Undo.hpp
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+++ b/src/server/events/Undo.hpp
@@ -0,0 +1,58 @@
+/*
+  This file is part of Ingen.
+  Copyright 2016 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or any later version.
+
+  Ingen 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 Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_EVENTS_UNDO_HPP
+#define INGEN_EVENTS_UNDO_HPP
+
+#include "Event.hpp"
+#include "UndoStack.hpp"
+#include "types.hpp"
+
+namespace ingen {
+namespace server {
+namespace events {
+
+/** A request to undo the last change to the engine.
+ *
+ * \ingroup engine
+ */
+class Undo : public Event
+{
+public:
+	Undo(Engine&            engine,
+	     SPtr<Interface>    client,
+	     SampleCount        timestamp,
+	     const ingen::Undo& msg);
+
+	Undo(Engine&            engine,
+	     SPtr<Interface>    client,
+	     SampleCount        timestamp,
+	     const ingen::Redo& msg);
+
+	bool pre_process(PreProcessContext& ctx) override;
+	void execute(RunContext& context) override;
+	void post_process() override;
+
+private:
+	UndoStack::Entry _entry;
+	bool             _is_redo;
+};
+
+} // namespace events
+} // namespace server
+} // namespace ingen
+
+#endif // INGEN_EVENTS_UNDO_HPP