visible property

bool get visible

Whether the node is drawn and laid out at all. Not opacity zero: a hidden node takes no room in a row, and a column closes over it. The boolean a component most often exposes — show the badge, hide the footer — which is why it is a property and not an effect.

Implementation

bool get visible => _visible;

set visible (bool value)

Implementation

set visible(bool value) {
  _visible = value;
  // A node that is not laid out keeps no rect: the last one it had would
  // otherwise still catch a click and draw a selection box over nothing.
  if (!value) measured = null;
}