Sync Calendar events to the local encrypted database for offline access

[vladimiry]

It's going to be implemented in a similar way to how it's currently working for the email messages (see local store topic in the FAQ for details).

As far as I know, ProtonMail is not planning to provide offline access to calendar events capability in the near future even for paid users, so it might be a unique feature if it gets implemented.

[vladimiry]

The work on this issue is going to be started when the calendar functionality gets settled as I need all the data model entities to be visible for me. Not only the event entity but also participants, etc. And I need to see how it works in action. So, for now, we wait for ProtonMail to progress on the calendar feature.

[vladimiry]

I think the first nice step would be in making the Calendar-related desktop notifications/alarms work regardless of the open page (mail/calendar/settings/account/drive). Currently due to the @protonmail's tech. design the desktop notifications/alarms will be displayed only if you have the Calendar page opened (cfa3b00 fix needs to be applied). This task would include 2 parts:

• Making the desktop notifications/alarms work regardless of the page being opened.
• Making the Notification's button open the app's window and then selecting the respective mail account (the same action the app already does for the unread mails notifications).

So this would not be the full calendar-related data sync yet for offline use purposes but the UX would be enhanced in comparison with what is currently provided by @ProtonMail.

[vladimiry]

I think the first nice step would be in making the Calendar-related desktop notifications/alarms work regardless of the open page (mail/calendar/settings/account/drive).

This has been implemented and pushed to the master branch.

Here is the respective changelog point:

Enable displaying Calendar-related desktop notifications/alarms regardless of the open page (account / calendar / drive / mail / settings) (#229, bc3a7126).