dataCellForTableColumn method

FROM : Hans Hansen
DATE : Wed Mar 19 19:58:12 2008

Anyone know how best to use multiple NSTextCell subclasses, in a table/
outline column?

When I use the dataCell... methods in NSTableColumn, NSTableView, or 
NSOutlineView, it works great until I try to edit the cell, at which 
point the cells never receive the edit/select actions. I've tried lots 
of things but can't figure out what's happening, nor a better why to 
do this overall.

In other words:

When I use the dataCellForTableColumn method, my table does display 
the different textcell subclasses returned. But when I send the table/
outline [self editColumn:1 row:[self selectedRow] withEvent:theEvent 
select:YES] message it seems to get lost -- my specified cells don't 
receive an editWithFrame/selectWithFrame action. If I remove this 
method and only use one cell class in the column, it works as expected.

- (NSCell *)outlineView:(NSOutlineView *)outlineView 
dataCellForTableColumn:(NSTableColumn *)tableColumn item:(id)item {

   if ([item isKindOfClass:[Project class]]) return projectTextCell;
   if ([item isKindOfClass:[Action class]]) return actionTextCell;
   if ([item isKindOfClass:[Item class]]) return itemTextCell;
   if ([item isKindOfClass:[Note class]]) return noteTextCell;

   return nil;
}

The point of this is to breakout my cell designs for efficiency and 
comprehension. But so far it's just making me nuts. ;-).

Any suggestions??

--

Hans Hansen
Midnight Beep Softworks