onPressed property
ToolbarItemCallback?
onPressed
Executed when this item is pressed.
If ToolbarItem.sublist is used, this will push the sublist to the stack of toolbar item lists and it will be shown on top of the toolbar this item is a part of.
Implementation
ToolbarItemCallback? get onPressed =>
hasItems ? ((context, _) => super.sublistCallback(context)) : _onPressed;