Method _collapseOrParent

src/aria/private/tree/tree.ts:472–479

Collapses the active item if possible, otherwise navigates to the parent.

(opts?: SelectOptions)

  /** Collapses the active item if possible, otherwise navigates to the parent. */
  _collapseOrParent(opts?: SelectOptions) {
    const item = this.treeBehavior.inputs.activeItem();
    if (item && this.treeBehavior.isExpandable(item) && item.expanded()) {
      this.treeBehavior.collapse(item);
    } else {
      this.treeBehavior.parent(opts);
    }
  }

  /** Retrieves the TreeItemPattern associated with a DOM event, if any. */
  protected _getItem(event: Event): TreeItemPattern<V> | undefined {