Make the panel class provide a cancellable that will be cancelled when the panel
is destroyed. Panel implementations can use this and not have to mangage the
cancellable themselves. Consolidate cases where panels had multiple cancellables
that were all being used for this behaviour.

Matthias Clasen authored Dec 02, 2019 and Georges Basile Stavracas Neto committed Feb 02, 2020

This is backed by the 'wallpaper' permission that
the flatpak portal uses.

Fixes: #808

Introduced by d168eee5.

Felipe Borges authored Jan 13, 2020 and Georges Basile Stavracas Neto committed Jan 31, 2020

This makes the Printers panel consistent with the mockups at
https://gitlab.gnome.org/Teams/Design/settings-mockups/blob/master/users/users.png

See #685, #771 and !671

Robert Ancell authored Dec 03, 2019 and Georges Basile Stavracas Neto committed Jan 31, 2020

We don't need an enum and a lookup table, just send the string directly.

Robert Ancell authored Dec 03, 2019 and Georges Basile Stavracas Neto committed Jan 31, 2020

Instead of checking later if this should be enabled, only enable it for methods
that can do it.

Robert Ancell authored Dec 02, 2019 and Georges Basile Stavracas Neto committed Jan 31, 2020

This was previously done by storing the value inside the WirelessSecurity class.
This stopped the subclasses from becoming Gtk widgets.

The "always_ask" code was removed as it didn't seem to actually retain when
switching. This might need to be fixed at a later time.

Marek Kašík authored Jan 30, 2020 and Georges Basile Stavracas Neto committed Jan 31, 2020

This fixes an issue when on_get_job_attributes_cb()
was called after Printers panel has been finished.
It adds a GCancellable to pp_job_get_attributes_async()
calls.

Felipe Borges authored Jan 14, 2020 and Ondrej Holy committed Jan 30, 2020

According to the mockups at
https://gitlab.gnome.org/Teams/Design/settings-mockups/raw/master/users/users.png

Other than renaming the label, we prepend "Last login" to the
date-time string.

Fixes #771

Felipe Borges authored Jan 14, 2020 and Ondrej Holy committed Jan 30, 2020

According to the mockups at
https://gitlab.gnome.org/Teams/Design/settings-mockups/raw/master/users/users.png

Fixes #771

Felipe Borges authored Jan 13, 2020 and Ondrej Holy committed Jan 30, 2020

According to the mockups at
https://gitlab.gnome.org/Teams/Design/settings-mockups/raw/master/users/users.png

Fixes #771

Felipe Borges authored Jan 13, 2020 and Ondrej Holy committed Jan 30, 2020

According to the mockups at
https://gitlab.gnome.org/Teams/Design/settings-mockups/blob/master/users/users.png

Fixes #771

`dest_x` is not set if `gtk_widget_translate_coordinates()` fails, which
it can do before the widget is realised.

This fixes a valgrind warning, but doesn’t change any user-visible
behaviour as far as I can tell.

Signed-off-by: Philip Withnall <withnall@endlessm.com>