> On 6 Mar 2017, at 17:34, Jeremy Hughes <moon.rab...@virginmedia.com> wrote:
>
> It all works now.
Actually, it works as far as the text field displays “Multiple” (placeholder)
for multiple values, but it doesn’t work when I set a value in the text field.
In that case I get:
Error setting value for key path selection.self of object <NSArrayController:
0x6080001c22b0>[object class: NSMutableDictionary, number of selected objects:
2] (from bound object <NSTextField: 0x6080001e2500>): [<__NSCFNumber 0x337>
setValue:forUndefinedKey:]: this class is not key value coding-compliant for
the key self.
The text field is bound to an array of NSNumbers via an array controller (using
a Swift array that is marked as “dynamic”)
I can get around this by writing a “Number” wrapper:
class Number: NSObject
{
dynamic var value: NSNumber
init(_ value: Int) { self.value = NSNumber(value: value) }
}
dynamic var values: [Number]
and binding the text field to the “value” field of this wrapper (so the
controller key is arrayController.selection and the model key path is “value").
But I wonder if it is possible to bind directly to an array of NSNumbers
without using a wrapper.
I’ve tried doing that using an array of NSNumbers with the model key path set
to “value” (i.e. the value of the NSNumber) but I get the following error:
[<__NSCFNumber 0x337> valueForUndefinedKey:]: this class is not key value
coding-compliant for the key value.
So, unless there’s another key path I can use for NSNumber, I’m guessing it
isn’t possible to do this.
Jeremy
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
