Re: NSComboBox and bindings
Re: NSComboBox and bindings
- Subject: Re: NSComboBox and bindings
- From: Ivan Myrvold <email@hidden>
- Date: Thu, 27 May 2004 11:23:35 +0200
I have mostly got the bindings for NSComboBox working now. If I select
a title from the list, the title is stored in my setter method. I want
the value (stored in a different array) to be stored instead.
I have a model object (oppgave_combo) with an access method
(displayarray) which returns an array of strings to be displayed as the
items in the NSComboBox.
The same model object have another method (valuearray) which returns
the values to be stored as a result of selecting an item.
This last one I don't quite know how to bind to the NSComboBox.
Value Selection: (of the NSComboBox's binding):
> content = oppgave_combo.displayarray [File's Owner
(MyWindowController)]
> contentValues
> value = oppgave_combo.value [File's Owner (MyWindowController)]
This works fine, The NSComboBox is populated with the displayarray, and
selecting an item sets the instance variable "value" of the model
object "oppgave_combo".
But how do I bind the NSComboBox, so that the values stored in the
_valuearray is stored instead of the title?
I tried to bind contentValues like this:
> contentValues = oppgave_combo.valuearray [File's Owner
(MyWindowController)], but then I get the following message:
2004-05-27 11:18:12.926 Partos[5585] Binding contentValues of object
<NSComboBox: 0x7fcfac0> ignored: Key path (currently bound as
oppgave_combo.valuearray) needs to have the content key path
(oppgave_combo.displayarray) as prefix
2004-05-27 11:18:12.978 Partos[5585] Binding contentValues of object
<NSComboBox: 0x7fcfac0> ignored: Key path (currently bound as
oppgave_combo.valuearray) needs to have the content key path
(oppgave_combo.displayarray) as prefix
Pe 26. mai. 2004 kl. 18.48 skrev Fritz Anderson:
The experiment that I found works is:
-- Bind the contentValues to arrangedObjects.name
-- Bind the value to some property of the NSObjectController that
owns the array from which the arrangedObjects were drawn. This has to
be independent of the array and the selection of the
NSArrayController, because (I repeat) NSComboBox doesn't really deal
in selection from a list except as a convenience in filling in a text
field. It's a text field, not a menu.
-- In the setter method for the value property, modify the
contentValues array, if desired.
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