iCal (On The Web) support

[joshuajaharwood]

Prerequisites

• [x] I have searched open and closed issues for duplicates.

Feature

Is your feature request related to a problem? Please describe.

Remote iCal files can't be added into Calendar without using Evolution.

Describe the solution you'd like

Calendar's adding menu looks derivative of Evolution's, and so if possible we could port the menu.

Existing work

This is already implemented in Evolution. Under Evolution Accounts, Add, Calendar and On The Web.

Additional context

Here is a comparison of Calendar's adding dialog on the left, and Evolution's on the right:

The Evolution menu also allows for importing local .ical files. I wouldn't need it, but this would probably be a useful feature to some people.

[mcclurgm]

Does the CalDAV option not work for iCloud? It's in the Type menu -> CalDAV. I haven't tried it, but it should handle on-the-web calendars. At least it looks like it has similar funcitonality to the Evolution dialog you're demonstrating.

[joshuajaharwood]

Does the CalDAV option not work for iCloud? It's in the Type menu -> CalDAV. I haven't tried it, but it should handle on-the-web calendars. At least it looks like it has similar funcitonality to the Evolution dialog you're demonstrating.

I've attempted this, but the added calendar using this method doesn't return any events.

[mcclurgm]

Hmm. I've never tried adding iCloud accounts. Have you had any success adding it from Evolution's panel?

[joshuajaharwood]

Adding the remote iCal URL in Evolution works fine as documented above on the right - it adds fine in Evolution and then shows correctly in Evolution and in Calendar.

[mcclurgm]

Hmm. Not sure what's being different about ours then. I'll see if I can find some time to take a look.

[aral]

I just ran into this also while trying to import my calendars from iCloud. It seems that the Find Calendars button and related functionality is missing.

(See https://ar.al/2018/08/05/using-icloud-calendars-on-gnu-linux/)