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# didFocusWindow(_:)

Called by the app when a window gains focus to fire appropriate events with only this extension.

```
func didFocusWindow(_ focusedWindow: (any WKWebExtensionWindow)?)
```

## Parameters

`focusedWindow`

The window that gained focus, or `nil` if no window has focus or a window has focus that is not visible to this extension.

## Discussion

This method informs only the specific extension that a window has gained focus. If the intention is to inform all loaded extensions consistently, you should use the respective method on the extension controller instead.

---

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