Function markAncestorsForTraversal

packages/core/src/render3/util/view_utils.ts:264–280

(lView: LView)

 * flag is already `true` or the `lView` is detached.
 */
export function markAncestorsForTraversal(lView: LView) {
  lView[ENVIRONMENT].changeDetectionScheduler?.notify(NotificationSource.MarkAncestorsForTraversal);
  let parent = getLViewParent(lView);
  while (parent !== null) {
    // We stop adding markers to the ancestors once we reach one that already has the marker. This
    // is to avoid needlessly traversing all the way to the root when the marker already exists.
    if (parent[FLAGS] & LViewFlags.HasChildViewsToRefresh) {
      break;
    }

    parent[FLAGS] |= LViewFlags.HasChildViewsToRefresh;
    if (!viewAttachedToChangeDetector(parent)) {
      break;
    }
    parent = getLViewParent(parent);
  }
}

/**
 * Stores a LView-specific destroy callback.