[android-components](../../../index.md) / [mozilla.components.browser.menu.item](../../index.md) / [BrowserMenuItemToolbar](../index.md) / [Button](index.md) / [listener](./listener.md)

# listener

`val listener: () -> `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/browser/menu/src/main/java/mozilla/components/browser/menu/item/BrowserMenuItemToolbar.kt#L87)

Callback to be invoked when the button is pressed.

