On Jul 14, 2012, at 10:08 , Keary Suska wrote: > For the archives, it is not safe to assume that tableView:isGroupRow: will > determine which rows are actually group rows, at least if you implement > tableView:dataCellForTableColumn:row:. It seems that regardless of whether > you implement tableView:isGroupRow:, NSTableView will always send > tableView:dataCellForTableColumn:row: a nil tablecolumn argument to determine > whether the row is a group row (ostensibly). If you return an NSCell object, > it will assume that the row is a group row and as a consequence will assume > that *every* row is a group row unless the row returns nil.
A group row is one drawn with with different style characteristics. (In a normal table, for example, it has a gradient shaded background.) This is controlled by 'tableView:isGroupRow:'. A group cell is one that draws the *entire row* as a single cell (and cells are not drawn per column). This is controlled by 'tableView:dataCellForTableColumn:nil row:'. The two things are orthogonal, although in many cases you'll want the the group row to use a group cell to span the width of the table. One case where you might use a group cell *not* in a group row is in an outline view, where expandable rows might not need to show column information like detail rows. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
