Function contains

packages/designer/src/document/node/node.ts:1427–1442

(node1: INode, node2: INode)

 * @returns 是否包含
 */
export function contains(node1: INode, node2: INode): boolean {
  if (node1 === node2) {
    return true;
  }

  if (!node1.isParentalNode || !node2.parent) {
    return false;
  }

  const p = getZLevelTop(node2, node1.zLevel);
  if (!p) {
    return false;
  }

  return node1 === p;
}

// 16 node1 contains node2
// 8  node1 contained_by node2