Object change to NSView update
Object change to NSView update
- Subject: Object change to NSView update
- From: Paul Bruneau <email@hidden>
- Date: Fri, 22 Aug 2008 10:58:30 -0400
I feel I can nearly grasp what I need to do, but not quite. I know
what I shouldn't be doing--which is what I am doing and I feel I'm a
little in the weeds. I seek a nudge in the right direction if someone
can help.
I have a master-detail setup with a normal table displaying a list of
orders. Below it is my subclass of NSView which draws a tree diagram
of the selected order and its descendent order steps, each of which
might have its own descendants. In fact, here it is:
http://special-lite.com/satellite/Picture 4.png
I am forcing the view to update after a change to one of the order
step objects in what I am sure is The Wrong Way™ by basically chucking
setNeedsDisplay into areas of my code such as the contextual menu
handling code, etc. This works great for GUI-driven changes even
though it's wrong, but it falls apart of course when changes occur due
to Applescript.
What I think I understand that I need is that when an object belonging
to the current selection of the table is modified, that a controller
is notified and it tells the view to update. Or perhaps I can
programmatically bind the view to the table's selection.
I think I could maybe (maybe!) figure out how do this for the order
(the table's selection), but I am totally lost as to how I would do it
for the order's great-grandchildren order steps.
If someone could give me a short breakdown of the idea of how to do
it, I will happily go read hours of documentation and examples to
learn the details.
Thank you_______________________________________________
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