Akonadi Calendar Dataengine

[Frederik Gladhorn]

Marco Martin wrote:

> On Monday 05 April 2010, Frederik Gladhorn wrote:
>> Hi all,
>> 
>> I just noticed that now - with KDE SC 4.4, I have a working Akonadi
>> Calendar. Which by itself is pretty awesome of course. But wouldn't it be
>> even ++aweseome if that was connected to my
>> plasma-clock-foldout-calendar?
> 
> not only awesome, is a mst have :)
> 
>> So I set down and poked our pimsters and got all the info I need in order
>> to write a data engine for the calendar. I'm good to go on the Akonadi
>> part.
>> 
>> Now I'd like to have a few comments:
>> 
>> There are two data engines that could be extended towards this. Or I
>> could start a new one of course...
>> 
>> Calendar - this one uses queries like "isHoliday:region:date" and gives
>> information about individual holidays. (btw - it seems completely
>> undocumented, so you'd need to look into the source in order to find out
>> what valid requests are. Is not using api dox a good idea? Or is it
>> documented somewhere else?)
>> 
>> The other one is the Akonadi dataengine which doesn't care about
>> calendars yet. On the other hand it already links to Akonadi.
>> It has emails, microblogging and contacts as data.
>> This one uses "ContactCollection-id" so the separators are ':' and '-'. I
>> guess there is no rule about this at all, so every data engine just comes
>> up with it's own string concatenation scheme?
> 
> i think the akonadi dataengine would be the place to go
> 
>> 
>> For my purpose I'd rather use a date range to query calendar events.
>> So I'd suggest parameters like:
>> * start date (maybe like the current Calendar engine - iso: yyyy-mm-dd)
>> * end date
>> * optional a filter for types - this can be one of: event/todo/journal -
>> is this useful?
> 
> also in the query the time could be useful (for plasmoids that show more
> detailed data than the calendar for instance), perhaps a qdatetime?

it would be in the results with time anyway. but I can include that in the 
query as well.

> 
>> Returned would be maps with:
>> start date-time, end date-time, summary, long description, location and
>> type
>> 
>> Is anyone up to changing the current calendar? It would need at least
>> more colored squares and tooltips (which would also be nice for the
>> current holidays).
> 
> not sure for 4.5, probably not, but can be done yes (if somebody is
> willing to take it earlier would be happy tough :p)

dude, I want this, now! :P
(yeah, I know I should do this myself then, but I only want the data engine 
part of the task...)

> 
> Cheers,
> Marco Martin