将NSTextField的Enabled属性绑定到BOOL属性

Question

I am a Mac dev newbie. I have a dialog with some set of controls. The controls needs to be enabled/disabled based on a radio selection. The way I did it is by creating IBOutlet variables for each of these controls and then calling control's SetEnabled() when the radio selection changes. It all works fine but now there are 8 IBOutlet variables and then 8 statements to set their state. Wondering if there is a nice way to do it through binding?

I declared a BOOL property typeOneEnabled and set the NSTextField's Enabled binding to File Owner >> typeOneEnabled. Thought it would change the enabled state when the property changes but that does not seem to work. Am I missing something here or its not possible?

// in header I have  
BOOL typeOneEnabled;  
@property BOOL typeOneEnabled;

// in mm file  
@synthesize typeOneEnabled

// then to change the property val in a method  
self.typeOneEnabled = someval;

I remember putting some code immediately before and after setting the property value but it did not work and I reverted it. Was something related to WithKey:@"typeOnEnabled".

Answer 1

If the enabled binding is used for NSTextField and related make sure the bound BOOL property is always accessed through the KVO accessors by using the setter method or the dot syntax. Also make sure that if the 'NSTextField' value is also bound to a property, that the value binding does disable Conditionally Sets Editable . Otherwise this leads to enabling of the control.