[horde] Add Travel Time to Calendar Appointment

[Horst Simon]

> On 8 Oct 2021, at 03:10, Jens Wahnes <wahnes at uni-koeln.de> wrote:
> 
> Ralf Lang wrote:
>> Quoting Horst Simon <horst.simon2 at icloud.com>:
>> 
>>> Is it possible to add to Calendar Appointments travel time?
> 
>> I am not very sure I understand that feature. At the moment you can make 
>> descriptions or you can add resources (like meeting rooms or any 
>> demonstration material you need to have reservation on or take with 
>> you), Attendees and a location but there is no field for travel time. 
>> You could add separate appointments before and after representing 
>> travel. I see it can be cumbersome if done a lot.
> 
> I think he is referring to a special attribute that is used in the Apple 
> sphere (Mac, iPhone, etc.) for calendar entries. When adding a new 
> calendar entry there, one can make the iPhone consider the time needed 
> to travel to the location where the event is supposed to take place. 
> That is, one will be reminded ahead of time to leave the current 
> location to make it to the new place in time for the event.
> 
> I'm not sure how this is represented in the iCalendar format, but I 
> suppose it's just another "custom field" of data that is stored on the 
> server. After all, the server doesn't know the user's current location, 
> so it can't make any assumtion how long it may take to travel to the 
> event's location (let alone traffic conditions, mode of travel, etc.). 
> Therefore, the actual time required must be something that is calculated 
> on the client (iPhone). With this in mind, it might be possible to save 
> this kind of information in Horde, once the new feature you described in 
> your blog recently 
> <https://www.ralf-lang.de/2021/10/03/custom-icalendar-data-in-kronolith-nag/> 
> is available for regular Horde users.
> 
I am sorry I was not clear enough, is it as Jens described it above.
Horst