Re: Scenarios I don't know how to use Bindings in
Re: Scenarios I don't know how to use Bindings in
- Subject: Re: Scenarios I don't know how to use Bindings in
- From: "I. Savant" <email@hidden>
- Date: Sat, 10 Feb 2007 00:47:08 -0500
Seth:
1) The first thing is managing the enabled state of a Remove button
for a list. Every bindings tutorial has one, and not a single
tutorial demonstrates how this should be done! Do I still need to
use a table delegate, or can I actually bind the enabled port
(what's the right name for this?) of the button to the array
controller's selection? I've tried that, and it never works.
The right name is its "binding". Bind the button's enabled binding
to the array controller's canRemove controller key (with no model key
path). This will properly manage the state versus selection.
2) Currently I have a FileTypesManager object which manages an
array (and some other structures) of FileType objects. The glue
code in my preferences controller displays the file types in a
table view, and then allows them to be edited. Before adding a new
file type, I first display a sheet to get some critical values from
the user. When deleting, there's also a confirmation sheet. So how
can I do the same thing with bindings?
You might have to give more details here. The sheets should work
exactly the same ... you may be thinking that you have to connect a
button to the controller's add: action ... but nothing says you can't
connect your "Add" button to your own method (to display the sheet,
etc.) and send -add: to your array controller when you want to. You
can even call -addObject: and hand it a ready-made object.
If that's not the answer to the question you asked, maybe others
will understand where I didn't ... but it would still help to give
more details. :-)
--
I.S.
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