import { Action, Base, EventBase } from "survey-core"; import { SurveyCreatorModel } from "../../creator-base"; import { UndoRedoManager } from "./undo-redo-manager"; export declare class UndoRedoController extends Base { private creator; private undoAction; private redoAction; ignoreChanges: boolean; private onSurveyPropertyValueChangedCallback; constructor(creator: SurveyCreatorModel); undoRedoManager: UndoRedoManager; updateSurvey(): void; private notifySurveyMoveItem; private selectElementAfterUndo; private selectElementAfterUndoCore; undo(): void; redo(): void; startTransaction(name?: string): void; stopTransaction(): void; createActions(): Action[]; private updateUndeRedoActions; /** * The event is called before undo happens. * options.canUndo a boolean value. It is true by default. Set it false to hide prevent undo operation. */ onBeforeUndo: EventBase; /** * The event is called before redo happens. * options.canRedo a boolean value. It is true by default. Set it false to hide prevent redo operation. */ onBeforeRedo: EventBase; }