SemanticsNode.root constructor Null safety

SemanticsNode.root(
  1. {Key? key,
  2. VoidCallback? showOnScreen,
  3. required SemanticsOwner owner}
)

Creates a semantic node to represent the root of the semantics tree.

The root node is assigned an identifier of zero.

Implementation

SemanticsNode.root({
  this.key,
  VoidCallback? showOnScreen,
  required SemanticsOwner owner,
}) : _id = 0,
     _showOnScreen = showOnScreen {
  attach(owner);
}