Coding own applicaion for Gnome-shell Calendar

Question

1) I'm looking to write a calendar application in python that will interact with Gnom-shell-calendar. I've asked around, and I was told that the Gnome-shell calendar uses

evolution-data-sever 

do get its informaion. I looked around and saw that there is a python module

python-evolution 

that allows you to interact with the evolution server. That module has now been depreciated. Is There another way to interact with the sever.

2) I've also seen a process called

Gnome-shell-calendar-server

Whats The difference between that and the evolution one?

Answer 1

Evolution Data Server 3.6 can be accessed with Python using gobject introspection. For this, gir1.2-edataserver-1.2 and gir1-2-ecalendar-1.2 also need to be installed.

For example, the following script will list all the events in all calendars in evolution-data-server.

#! /usr/bin/python
# -*- coding: utf-8 -*-

from gi.repository import ECalendar
from gi.repository import EDataServer

# Open a registry and get a list of all the calendars in EDS
registry = EDataServer.SourceRegistry.new_sync(None)
sources = EDataServer.SourceRegistry.list_sources(registry, EDataServer.SOURCE_EXTENSION_CALENDAR)

# Open each calendar containing events and get a list of all objects in them
for source in sources:
    client = ECalendar.CalClient.new(source, ECalendar.CalSourceType.EVENT)
    client.open_sync(False, None)

    # ret is true or false depending if events are found or not
    # values is a list of events
    ret, values = client.get_object_list_as_comps_sync("#t", None)
    if ret:
        for value in values:
            event = value.get_as_string()
            print event