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+// Copyright (C) 2008  Tim Moore
+//
+// 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 Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+#ifndef FLIGHTGEAR_WINDOWBUILDER_HXX
+#define FLIGHTGEAR_WINDOWBUILDER_HXX 1
+
+#include <osg/ref_ptr>
+#include <osg/Referenced>
+#include <osg/GraphicsContext>
+
+#include <string>
+
+class SGPropertyNode;
+
+namespace flightgear
+{
+class GraphicsWindow;
+/** Singleton Builder class for creating a GraphicsWindow from property
+ * nodes. This involves initializing an osg::GraphicsContext::Traits
+ * structure from the property node values and creating an
+ * osgViewer::GraphicsWindow.
+ */
+class WindowBuilder : public osg::Referenced
+{
+public:
+    /** Initialize the singleton window builder.
+     * @param stencil whether windows should allocate stencil planes
+     */
+    static void initWindowBuilder(bool stencil);
+    /** Get the singleton window builder
+     */
+    static WindowBuilder* getWindowBuilder() { return windowBuilder.get(); }
+    /** Create a window from its property node description.
+     * @param winNode The window's root property node
+     * @return a graphics window.
+     */
+    GraphicsWindow* buildWindow(const SGPropertyNode* winNode, bool isMainWindow=false);
+    /** Get a window whose properties come from FlightGear's
+     * command line arguments and their defaults. The window is opened
+     * if it has not been already.
+     * @return the default graphics window
+     */
+    GraphicsWindow* getDefaultWindow();
+    /** Get the name used to look up the default window.
+     */
+    const std::string& getDefaultWindowName() { return defaultWindowName; }
+
+    static void setPoseAsStandaloneApp(bool b);
+protected:
+    WindowBuilder(bool stencil);
+    
+    void setFullscreenTraits(const SGPropertyNode* winNode, osg::GraphicsContext::Traits* traits);
+    bool setWindowedTraits(const SGPropertyNode* winNode, osg::GraphicsContext::Traits* traits);
+    
+    void setMacPoseAsStandaloneApp(osg::GraphicsContext::Traits* traits);
+    
+    void makeDefaultTraits(bool stencil);
+    
+    osg::ref_ptr<osg::GraphicsContext::Traits> defaultTraits;
+    int defaultCounter;
+    bool usingQtGraphicsWindow = false;
+    
+    static osg::ref_ptr<WindowBuilder> windowBuilder;
+    static std::string defaultWindowName;
+    static bool poseAsStandaloneApp;
+};
+
+/** Silly function for making the default window and camera
+ * names. This concatenates a string with in integer.
+ */
+std::string makeName(const std::string& prefix, int num);
+
+}
+#endif