nodesNeedingLayout property

  1. @protected
  2. @nonVirtual
Iterable<RenderObject> get nodesNeedingLayout

The RenderObjects representing relayout boundaries which need to be laid out in the next flushLayout pass.

Relayout boundaries are added when they are marked for layout. Subclasses of PipelineOwner may use them to invalidate caches or otherwise make performance optimizations. Since nodes may be marked for layout at any time, they are best checked during flushLayout.

Relayout boundaries owned by child PipelineOwners are not included here.

Boundaries appear in an arbitrary order, and may appear multiple times.

Implementation

@protected
@nonVirtual
Iterable<RenderObject> get nodesNeedingLayout => _nodesNeedingLayout;