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Allison Karlitskaya authored
gtkapplication.c has turned into a bit of an #ifdef mess over time, and many of the current checks are incorrect. As an example, if you build Gtk for wayland, and exclude the X11 backend, much of the functionality required by wayland (such as exporting menu models) will be disabled. Solve that by introducing a backend mechanism to GtkApplication (named GtkApplicationImpl) similar to the one in GApplication. Add backends for Wayland, X11 and Quartz, with X11 and Wayland sharing a common 'DBus' superclass. GtkApplicationImpl | /--------------+-------------------\ | | GtkApplicationImplDBus GtkApplicationImplQuartz | /-----------+-----------------\ | | GtkApplicationImplX11 GtkApplicationImplWayland GtkApplicationImpl itself is essen...
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