The libedataserverui dependency is a relic of the old E-D-S API.
As of 3.6.0, E-D-S now centralizes authentication prompts so clients
don't have to display their own. This also allows trading the GTK+
main loop for a plain GMainLoop in gnome-shell-calendar-server.c.
https://bugzilla.gnome.org/show_bug.cgi?id=687189
Right now, we are hard-depending on the presence of Evolution by
using its settings schemas. This is likely to be unpopular, and
also causes instability if someone happens not to have Evolution
installed, so install a schema that has the same data path as
the Evolution schema, but a different name and install that
for the keys we need.
To avoid a string-freeze break, we rely on the translations in
Evolution - if Evolution isn't installed, the key descriptions
will be untranslated in dconf-editor.
https://bugzilla.gnome.org/show_bug.cgi?id=674424
Evolution now stores its selected calendars and tasks in GSettings, not
in GConf. If we don't look at the new location, then we'll not pick up
newly added and enabled calendars, making the calendar effectively not
work for new installs.
https://bugzilla.gnome.org/show_bug.cgi?id=673610
ECal is deprecated and replaced by ECalClient. This has the
advantage of using e_utils to handle authentication, and should
fix NotOpened errors (that affect in particular webcal calendars
prior to evolution running)
https://bugzilla.gnome.org/show_bug.cgi?id=671177
Unfortunately the evolution-data-server client-side libraries seem to
block the calling thread. This is a major problem as we must never
ever block the main thread (doing so causes animations to flicker
etc.). In the worst case, this problem causes login to hang (without
falling back to fall-back mode) and in the best case it slows down
login until a network connection is acquired.
Additionally, in order to sanely use these evolution-data-server
libraries, GConf has to be involved and GConf is not thread-safe. So
it's not really feasible just moving the code to a separate
thread. Therefore, move all calendar IO out of process and use a
simple (and private) D-Bus interface for the shell to communicate with
the out-of-process helper.
For simplification, remove existing in-process code since internal
interfaces have been slightly revised. This means that the shell is no
longer using any native code for drawing the calendar dropdown.
https://bugzilla.gnome.org/show_bug.cgi?id=641396
Signed-off-by: David Zeuthen <davidz@redhat.com>
