enabled property Null safety
final
Whether this popup menu button is interactive.
Must be non-null, defaults to true
If true the button will respond to presses by displaying the menu.
If false, the button is styled with the disabled color from the
current Theme and will not respond to presses or show the popup
menu and onSelected, onCanceled and itemBuilder will not be called.
This can be useful in situations where the app needs to show the button, but doesn't currently have anything to show in the menu.
Implementation
final bool enabled;