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Allison Karlitskaya authored
The current process of implementing GActionObserver is annoying and the GSimpleActionObserver interface leaves a lot to be desired. Introduce a new class, GtkActionHelper that gives you pretty much everything you'd want to do as an implementor of GtkActionable. The GtkActionHelper also features an "application" mode that is not associated with a particular GtkWidget but rather with whatever widget happens to be the active window of the given GtkApplication at a particular point in time. This will be useful for the Mac OS menubar.
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