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diff --git a/src/gui/WindowFactory.hpp b/src/gui/WindowFactory.hpp
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+/*
+  This file is part of Ingen.
+  Copyright 2007-2015 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_GUI_WINDOWFACTORY_HPP
+#define INGEN_GUI_WINDOWFACTORY_HPP
+
+#include "ingen/Node.hpp"
+#include "ingen/types.hpp"
+
+#include <cstddef>
+#include <map>
+
+namespace ingen {
+
+namespace client {
+class BlockModel;
+class ObjectModel;
+class GraphModel;
+}
+
+namespace gui {
+
+class App;
+class GraphBox;
+class GraphView;
+class GraphWindow;
+class LoadGraphWindow;
+class LoadPluginWindow;
+class NewSubgraphWindow;
+class PropertiesWindow;
+class RenameWindow;
+
+/** Manager/Factory for all windows.
+ *
+ * This serves as a nice centralized spot for all window management issues,
+ * as well as an enumeration of all windows (the goal being to reduce that
+ * number as much as possible).
+ */
+class WindowFactory {
+public:
+	explicit WindowFactory(App& app);
+	~WindowFactory();
+
+	size_t num_open_graph_windows();
+
+	GraphBox*    graph_box(SPtr<const client::GraphModel> graph);
+	GraphWindow* graph_window(SPtr<const client::GraphModel> graph);
+	GraphWindow* parent_graph_window(SPtr<const client::BlockModel> block);
+
+	void present_graph(
+		SPtr<const client::GraphModel> graph,
+		GraphWindow*                   preferred = nullptr,
+		SPtr<GraphView>                view      = SPtr<GraphView>());
+
+	void present_load_plugin(SPtr<const client::GraphModel> graph, Properties data=Properties());
+	void present_load_graph(SPtr<const client::GraphModel> graph, Properties data=Properties());
+	void present_load_subgraph(SPtr<const client::GraphModel> graph, Properties data=Properties());
+	void present_new_subgraph(SPtr<const client::GraphModel> graph, Properties data=Properties());
+	void present_rename(SPtr<const client::ObjectModel> object);
+	void present_properties(SPtr<const client::ObjectModel> object);
+
+	bool remove_graph_window(GraphWindow* win, GdkEventAny* ignored = nullptr);
+
+	void set_main_box(GraphBox* box) { _main_box = box; }
+
+	void clear();
+
+private:
+	typedef std::map<Raul::Path, GraphWindow*> GraphWindowMap;
+
+	GraphWindow* new_graph_window(SPtr<const client::GraphModel> graph,
+	                              SPtr<GraphView>                view);
+
+	App&               _app;
+	GraphBox*          _main_box;
+	GraphWindowMap     _graph_windows;
+	LoadPluginWindow*  _load_plugin_win;
+	LoadGraphWindow*   _load_graph_win;
+	NewSubgraphWindow* _new_subgraph_win;
+	PropertiesWindow*  _properties_win;
+	RenameWindow*      _rename_win;
+};
+
+} // namespace gui
+} // namespace ingen
+
+#endif // INGEN_GUI_WINDOWFACTORY_HPP