signal callback delegate or function to connect
void callback(adw.navigation_page.NavigationPage navigationPage)
navigationPage the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Showing signal.
Emitted when the page shows at the beginning of the navigation view transition.
It will always be followed by signalNavigationPage::shown or signalNavigationPage::hidden.