# `GlyphsToolbarExtension`

*Protocol*

## Declaration

```swift
@MainActor protocol GlyphsToolbarExtension
```

```objc
@protocol GlyphsToolbarExtension
```

```python
GlyphsToolbarExtension
```

## Topics

### Instance Methods

- [`GlyphsToolbarExtension toolbar:itemForItemIdentifier:willBeInsertedIntoToolbar:`](/Core/GlyphsApp/GlyphsToolbarExtension/toolbar:itemForItemIdentifier:willBeInsertedIntoToolbar:) — Returns the toolbar item for the specified identifier.
- [`GlyphsToolbarExtension toolbarAllowedItemIdentifiers:proposedItemIdentifiers:`](/Core/GlyphsApp/GlyphsToolbarExtension/toolbarAllowedItemIdentifiers:proposedItemIdentifiers:) — Returns the array of identifier strings for the allowed toolbar items.
- [`GlyphsToolbarExtension toolbarDefaultItemIdentifiers:proposedItemIdentifiers:`](/Core/GlyphsApp/GlyphsToolbarExtension/toolbarDefaultItemIdentifiers:proposedItemIdentifiers:) — Returns the array of identifier strings for the default toolbar items.
- [`GlyphsToolbarExtension windowDidLoad:`](/Core/GlyphsApp/GlyphsToolbarExtension/windowDidLoad:) — Called after the toolbar has been added to the window.
- [`GlyphsToolbarExtension windowWillClose:`](/Core/GlyphsApp/GlyphsToolbarExtension/windowWillClose:)