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Allison Karlitskaya authored
Add an internal API for checking if a GtkMenuTrackerItem is visible, along with a signal for reporting changes in that flag. The item will become invisible in situations according to the new hidden-when='' attribute, which can be set to 'action-disabled' or 'action-missing'. This new flag doesn't actually do anything yet, and none of the consumers of GtkMenuTracker do anything with it (nor should they). A followup patch will address the issue. https://bugzilla.gnome.org/show_bug.cgi?id=688421
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