detach method

@override void detach()

Mark this render object as detached from its PipelineOwner.

Typically called only from the parent's detach, and by the owner to mark the root of a tree as detached.

Subclasses with children should override this method to detach all their children after calling the inherited method, as in super.detach().

Implementation

@override
void detach() {
  _controller.unregisterRenderHost(_hostCallback);
  // A pending FLIP baseline that was never consumed (widget unmounted
  // between mutation and next frame) would leak the offset map and
  // trip stale-state assertions on re-attach. Drop it eagerly.
  _pendingSlideBaseline = null;
  _pendingSlideDuration = null;
  _pendingSlideCurve = null;
  super.detach();
  for (final child in _children.values) {
    child.detach();
  }
}