[Design] Deleting collections and the items in them

[Jeffrey Harris]

Hi Mimi,

> So all of the events are in your Dashboard though, because 'Choir' was a
> Mine collection? Just not in your personal calendar?

Yup.  I had this radical notion that I'd get my conductor to maintain
the collection and share it with everybody.  But she's got an oooold Mac
and I decided discretion was the better part of valor.  But now we're
getting pretty far off topic...

> Well it's just confusing. You thought you deleted all the items. And
> then lo and behold some of them are there. You start to question whether
> what you did and how the app works. The use case could easily be that
> you Delete the Choir collection because you quit the Choir in a huff.
> You had previously added all of the Choir's events into your Personal
> 'Fun' calendar, but now you just want to get rid of anything having to
> do with the Choir.

OK, I see the confusion.

>> 2. "Some of the items in this collection appear in other
>> user-collections.    Do you want to trash all items in this collection,
>> regardless of their membership in other collections?"
> 
> That would be an elegant way to phrase it. If users choose to [Delete
> collection and its items] and we detect that some of the items live in
> other user-defined collections, then we can pop-up a 2nd popup that
> says: 8 of your items also appear in other collections. Are you sure you
> want to delete them?

Great.  Lets add that dialog, then we'll all be happy.  I'm assuming
this is a Yes/No/Cancel dialog, right?

> I think 1 would be useful if you just want to get rid of the grouping in
> the sidebar, but want to keep the collections...because the grouping is
> no longer useful to you (e.g. a Project that has completed). But really,
> this use case would be better served by an affordance to 'Remove' a
> collection from the sidebar, without losing the collection as a Label on
> its member items.

Sounds great, post-Preview.  For now, two dialogs.

Assuming we're on the same page now, I think I've got enough to move
forward.

Thanks!
Jeffrey