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# toolbarDefaultItemIdentifiers(_:)

Returns the array of identifier strings for the default toolbar items.

```
@MainActor func toolbarDefaultItemIdentifiers(_ toolbar: NSToolbar) -> [NSToolbarItem.Identifier]
```

## Parameters

`toolbar`

The toolbar making the request.

## Return Value

An array of <doc://com.apple.documentation/documentation/Foundation/NSString> objects, each of which contains an identifier for a toolbar item that is part of the default configuration. The order of items in the array is used to set the order of items in the toolbar.

## Discussion

This method is called for tab view interfaces that use the [`NSTabViewController.TabStyle.toolbar`](/documentation/AppKit/NSTabViewController/TabStyle-swift.enum/toolbar) style. Use this method to return the default set of toolbar items, including any extra toolbar items you want included. For example, include [`flexibleSpace`](/documentation/AppKit/NSToolbarItem/Identifier/flexibleSpace) strings as the first and last elements of the array to center the remaining toolbar items. If you add custom identifiers, you must also override the [`toolbar(_:itemForItemIdentifier:willBeInsertedIntoToolbar:)`](/documentation/AppKit/NSTabViewController/toolbar(_:itemForItemIdentifier:willBeInsertedIntoToolbar:)) method to specify the content for those toolbar items.

If you override this method, you must call `super` at some point in your implementation. The default implementation of this method returns the identifiers for all toolbar items that correspond to tabs in the tab bar interface.

---

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