Binding NSPopUpButton to an NSMutableArray

Question

that_aint_it_chief OP

Created Oct ’24

Replies 2

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Participants 2

My view controller has this property:

@property NSMutableArray *tableCities;

Whenever I press a button a new city object is added to this array, it consists of a dictionary of NSStrings containing the name and state of the city being added.

Now, I have an NSPopUpButton that I'd like to bind to the city name of all cities in this NSMutableArray, how exactly can I achieve this with the Bindings Inspector?

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Answer 1

GRALInfo OP

Oct ’24

Hi @that_aint_it_chief , well this question about Mac OS brings me to all past days on I started developing on a Macintosh || Classic with Borland C and Inside Macintosh :)

Try to help you, I think that you should use this bindings from inspector tab:

Bind Content -> yourViewControllerClass
ControllerKey -> tableCities

If for example you should have some more structured model (for example an array of objects with field title for example), then you should use something like this:

Bind Content Values -> yourViewControllerClass
ControllerKey -> arrangedObjects
Model Key Path: title

Here documentation on bindings

https://developer.apple.com/library/archive/documentation/Cocoa/Reference/CocoaBindingsRef/BindingsText/NSPopUpButton.html

Bye Rob

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Answer 2

that_aint_it_chief OP

Oct ’24

I'm not finding these options, I will describe the situation in more detail here:

My ViewController has the PopUpButton:

// ViewController.h
@interface ViewController : NSViewController<NSWindowDelegate, NSTableViewDataSource,
NSTableViewDelegate>

@property (weak) IBOutlet NSPopUpButton*	popUpButton;
// ...
@end

Then I tried to add some object to the tableCities:

NSString* newCity = @"test";

    
    NSString* filePath = @"/Users/eagle/Documents/cities/denver.jpeg";
    NSDictionary *obj = @{@"image": [[NSImage alloc] initByReferencingFile:filePath],
                          @"name": newCity,
                          @"filePath": filePath
    };


[_tableCities addObject: obj];

I just wanted my pop up button to reflect the contents of _tableCities, specifically the "@name" field.

Going back to the story board in the bindings inspector, selecting the "Bind to View Controller" checkbox makes the "Controller Key" grayed out, what gives?

Sorry if this is a dumb question but I can't for the life of me get this to work .

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