Method getTopNodes

packages/shell/src/model/selection.ts:103–113

* 获取选区的顶层节点 * for example: * getNodes() returns [A, subA, B], then * getTopNodes() will return [A, B], subA will be removed * @returns

(includeRoot: boolean = false)

   * @returns
   */
  getTopNodes(includeRoot: boolean = false): IPublicModelNode[] {
    const innerNodes = this[selectionSymbol].getTopNodes(includeRoot);
    const nodes: IPublicModelNode[] = [];
    innerNodes.forEach((node: InnerNode) => {
      const shellNode = ShellNode.create(node);
      if (shellNode) {
        nodes.push(shellNode);
      }
    });
    return nodes;
  }

  onSelectionChange(fn: (ids: string[]) => void): IPublicTypeDisposable {
    return this[selectionSymbol].onSelectionChange(fn);