Re: Editing a dictionary using NSTableView
Re: Editing a dictionary using NSTableView
- Subject: Re: Editing a dictionary using NSTableView
- From: Jason Coco <email@hidden>
- Date: Sun, 26 Oct 2008 18:41:13 -0400
On Oct 26, 2008, at 18:29 , Graham Cox wrote:
Let's say I have a NS(Mutable)Dictionary and I'd like to make a very
simple editor for its keys and values. So I have a NSTableView with
two columns, key and value. The dictionary can contain any mix of
strings and numbers, and the numbers can be ints or reals.
I find that when setting an edited value for a given key, everything
gets converted to a string, because the object type returned by the
table is a string. (The column type for value is a string, but
numbers passed as the object value are automatically converted. I'm
not using a formatter.)
Is there a simple way to allow the table to edit a value but
preserve its type in the dictionary? I could check the type of the
key I'm about to set and convert each value to that type, but it
seems very clunky. I feel I've missed something obvious.
If I were doing it, I'd have a type key and let the user specify what
type s/he wanted, like in the current property list editor. That way
if the user wants to type a real number
but actually wants it to be a string for whatever reason, it could be.
In my experience, whenever you want to mix strings and various number
values, it's easiest to ask the
user what s/he's expecting to store rather than trying to guess.
J
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