handleSelectAll method

@override SelectionResult handleSelectAll(SelectAllSelectionEvent event)

Selects all contents of all Selectables.

Implementation

@override
SelectionResult handleSelectAll(SelectAllSelectionEvent event) {
  final SelectionResult result = super.handleSelectAll(event);
  for (final Selectable selectable in selectables) {
    _hasReceivedStartEvent.add(selectable);
    _hasReceivedEndEvent.add(selectable);
  }
  // Synthesize last update event so the edge updates continue to work.
  _updateLastEdgeEventsFromGeometries();
  return result;
}