Method toggleExpansion

src/aria/private/behaviors/tree/tree.ts:237–244

Toggles the expansion of the given item.

(item?: T)

  /** Toggles the expansion of the given item. */
  toggleExpansion(item?: T) {
    item ??= this.inputs.activeItem();
    if (!item || !this.isFocusable(item)) return;

    if (this.isExpandable(item)) {
      this.expansionBehavior.toggle(item);
    }
  }

  /** Expands the given item. */
  expand(item: T) {