CODEWITHSUNDEEP
objective-cmacoscocoanstoolbar
Erik
Erik

Reputation: 5841

NSToolbarDelegate Error?

Im creating a NSWindowController and its window programatically. So i create a simple NSToolbar with:

NSToolbar *toolbar = [[NSToolbar alloc] initWithIdentifier:@"PreferencesToolbar"];

[toolbar setDisplayMode:NSToolbarDisplayModeIconAndLabel];
[toolbar setAllowsUserCustomization:NO];
[toolbar setAutosavesConfiguration:NO];

[self.window setToolbar:toolbar];

[toolbar release];

Which all works fine, but when I add [toolbar setDelegate:self];

I get the following error:

ERROR: invalid delegate (does not implement all required methods), and so can not be used! (To debug, add a breakpoint to NSToolbarError

According to NSToolbarDelegate there are no required methods, so what is going wrong here?

Upvotes: 6

Views: 889

Answers (2)

Vicente Garcia
Vicente Garcia

Reputation: 6360

Following the great answer provided, the Swift version of the required methods:

func toolbar(_ toolbar: NSToolbar,
               itemForItemIdentifier itemIdentifier: NSToolbarItem.Identifier,
               willBeInsertedIntoToolbar flag: Bool) -> NSToolbarItem?
    
func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier]
    
func toolbarAllowedItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier]

Upvotes: 0

user971401
user971401

Reputation:

In order to make the toolbar work with your NSWindowController subclass as its delegate, you must declare it to conform to NSToolbarDelegate protocol : 

@interface MyController : NSWindowController <NSToolbarDelegate>

Also, from the doc, you must ensure that some are implemented, even if they are optional, because you created the toolbar programmatically. They are : 

-(NSToolbarItem *)toolbar:(NSToolbar *)toolbar
    itemForItemIdentifier:(NSString *)itemIdentifier
willBeInsertedIntoToolbar:(BOOL)flag;

-(NSArray *)toolbarAllowedItemIdentifiers:(NSToolbar *)toolbar;

-(NSArray *)toolbarDefaultItemIdentifiers:(NSToolbar *)toolbar;

Important While this method is marked as @optional in the NSToolbarDelegate protocol , it must be implemented if the associated toolbar is created programatically. Toolbars created in Interface Builder can implement this method to augment functionality.

Upvotes: 13

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