import { ToolActionInfo } from "./ToolActionInfo";
import { ToolActionType } from "./ToolActionType";
import { Type } from "./type";
/**
 * @hidden
 */
export declare class ToolActionSubPanelInfo extends ToolActionInfo {
    static $t: Type;
    protected get_d(): ToolActionType;
    private _itemSpacing;
    get itemSpacing(): number;
    set itemSpacing(a: number);
}