Mani, in regard to your original problem -- how did you limit an
editing session on Tiger?
If I remember correct, I overwrote the trackMouse:... routine of the
cell. If the user clicks on the special area of my NSTextFieldCell
subclass, I am doing something else. But the single click editing
seems to happen at another level (most probably in the NSTableView
mouseDown code, I think).
But I was able to solve my problem. I found a way to disable the
single click editing on Leopard, so the app behaves exactly like on
Tiger. (I did not find a solution to get the desired behaviour plus
single click editing on Leopard. But that's not so critical in my
case and I spent no more time into that.)
Side note: there is a way to disable the single-click editing
behavior
There is: I just always return NO in the tableview delegate method
tableView:shouldEditTableColumn:row:.
I still can start an editing session programmatically
(editColumn:...), if I want to. In my case editing is only available
through a contextual menu. Double clicking is overwritten with
another action that makes more sense in my app (but I think it must
be possible to start an editing session here if I would have wanted
that, too).
Yes -- that will work, it just removes the ability for the editing to
automatically happen without a right click.
What you are referring to is one of the primary reasons why single-
click to edit is so beneficial for apps and users. You have some
particular text in a cell that you want to be editable, yet at the
same time you also want a doubleAction to do something else.
Previously, on Tiger, there was no way to differentiate them; a double
click would *always* begin editing (unless you did some additional
work). Now, with "hitTestForEvent:", you can have finer grained
control, and still all double clicking on text to perform the
doubleAction, while single-clicking on text will begin editing. IMHO,
this is an ideal solution. Take Xcode for example; the project list
supports a doubleAction (ie: open that file in a new window). Before
Leopard, the only way to inline-edit was with a strange (and not
easily discoverable) alt-click to begin editing the cell. On Leopard,
it is much easier; you just single-click on the text (ala Finder) to
begin editing.
