Method _isExpandable

src/cdk/tree/tree.ts:1343–1354

Determines if the tree node is expandable.

()

  /** Determines if the tree node is expandable. */
  _isExpandable(): boolean {
    if (this._tree.treeControl) {
      if (this.isLeafNode) {
        return false;
      }

      // For compatibility with trees created using TreeControl before we added
      // CdkTreeNode#isExpandable.
      return true;
    }
    return this._inputIsExpandable;
  }

  /**
   * Determines the value for `aria-expanded`.