offstage property Null safety

bool offstage

Whether the child is hidden from the rest of the tree.

If true, the child is laid out as if it was in the tree, but without painting anything, without making the child available for hit testing, and without taking any room in the parent.

If false, the child is included in the tree as normal.

Implementation

bool get offstage => _offstage;
void offstage=(bool value)

Implementation

set offstage(bool value) {
  assert(value != null);
  if (value == _offstage) {
    return;
  }
  _offstage = value;
  markNeedsLayoutForSizedByParentChange();
}