As Main.overview is now usable from the view selector's constructor,
move the setup of signal connections there and remove the show/hide
methods which were used as workaround.
https://bugzilla.gnome.org/show_bug.cgi?id=642196
To enable find-as-you-type when entering the overview and disabling
it when leaving, we used a chain of functions calls from ViewSelector
over SearchTab to SearchEntry. As find-as-you-type should be enabled
while the overview is shown, the activation/deactivation can be
handled entirely by the SearchEntry itself by tying it to the entry's
visibility.
https://bugzilla.gnome.org/show_bug.cgi?id=642196
Until recently, the clutter keyboard focus was almost always kept on
the stage, and bits of code that wanted to do stuff with the keyboard
would just watch for key-press-events on the stage. In several places,
the code wasn't even bothering to ensure that the focus was on the
stage, which caused problems with other actors that explicitly grabbed
focus.
A previous fix for this (f21403fd) was to always reset the focus to
the stage after calling pushModal(), but a better fix is to just
actually make use of the keyboard focus everywhere rather than having
everyone try to read events off the stage.
Now pushModal(actor) also does actor.grab_key_focus(), and various
bits of code have been changed to read key events off their own
toplevels rather than off the stage, meaning there's no chance of them
accidentally getting someone else's events.
https://bugzilla.gnome.org/show_bug.cgi?id=618885
The view selector should only deal with view switching, so move the
logic to deal with search (find-as-you-type, cancelling a search,
navigating/activating results) into the SearchTab.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
The view selector is a tabbed interface with a search entry. Starting
a search switches focus to the results' tab, ending a search moves the
focus back to the previously selected tab. Activating a normal tab
while a search is active cancels the search.
https://bugzilla.gnome.org/show_bug.cgi?id=634948
