[LayaAir3]插件开发中，我需要选择文件夹，如何可视化选择文件夹

export class SplitAtlasDialog extends IEditor.Dialog {



  async create() {

    let panel = IEditor.GUIUtils.createInspectorPanel();

    let data = Editor.getSettings("SplitAtlasSetting").data;

    panel.inspect(data, "SplitAtlasSetting");

    this.contentPane = panel;



    panel.on("click_start_gen", this.startGen, this);

  }



  protected onShown() {

    (this.contentPane as IEditor.InspectorPanel).resetDefault();

    this.title = "SplitAtlas";

    this.setSize(450, 180);

  }

}

class SplitAtlasSetting {

  @IEditor.onLoad

  static start() {

    Editor.typeRegistry.addTypes([

      {

        name: "SplitAtlasSetting",

        catalogBarStyle: "hidden",

        properties: [

          {

            name: "help",

            caption: "提示",

            inspector: "Info",

            type: "string",

            default: "输入文件夹中需要有图集文件，输出目录会生成分割后的图片。",

          },

          {

            name: "inputPath",

            caption: "输入目录",

            inspector: "File",

            options: {

              absolutePath: true,

              properties: ["openDirectory"]

            },

            type: "string",

          },

          {

            name: "outputPath",

            caption: "输出目录",

            inspector: "File",

            options: {

              absolutePath: true,

              properties: ["openDirectory"],

            },

            type: "string",

          },

          {

            name: "",

            inspector: "Buttons",

            options: { buttons: [{ caption: "生成", event: "click_start_gen" }] }

          }

        ]

      }

    ]);

    Editor.extensionManager.createSettings("SplitAtlasSetting", "project");

  }

}