onEnterFullscreen property Null safety

(void Function?(InAppWebViewController controller)?) onEnterFullscreen
final

Event fired when the current page has entered full screen mode.

Official Android API: https://developer.android.com/reference/android/webkit/WebChromeClient#onShowCustomView(android.view.View,%20android.webkit.WebChromeClient.CustomViewCallback)

Official iOS API: https://developer.apple.com/documentation/uikit/uiwindow/1621621-didbecomevisiblenotification

Implementation

final void Function(InAppWebViewController controller)? onEnterFullscreen;