import { ITransactionItem } from '../ITransactionItem.js';
import { IDesignItem } from '../../../item/IDesignItem.js';
import { InstanceServiceContainer } from '../../InstanceServiceContainer.js';
import { IContentChanged } from '../../InstanceServiceContainer.js';
export declare class SetDesignItemsAction implements ITransactionItem {
    private container;
    constructor(newDesignItems: IDesignItem[], oldDesignItems: IDesignItem[], container?: InstanceServiceContainer);
    title?: string;
    get affectedItems(): IDesignItem[];
    undo(): IContentChanged[] | null;
    do(): IContentChanged[] | null;
    private setItems;
    newDesignItems: IDesignItem[];
    oldDesignItems: IDesignItem[];
    mergeWith(other: ITransactionItem): boolean;
}