import { IGraphicApp } from '../app/JlGraphicApp';
import { JlGraphic } from '../core/JlGraphic';
/**
 * 操作
 */
export declare abstract class JlOperation {
    type: string;
    app: IGraphicApp;
    obj?: any;
    data?: any;
    description?: string;
    constructor(app: IGraphicApp, type: string);
    undo1(): void;
    redo1(): void;
    abstract undo(): JlGraphic[] | void;
    abstract redo(): JlGraphic[] | void;
}
/**
 * 操作记录
 */
export declare class OperationRecord {
    undoStack: JlOperation[];
    redoStack: JlOperation[];
    private maxLen;
    constructor(maxLen?: number);
    get hasUndo(): boolean;
    get hasRedo(): boolean;
    setMaxLen(v: number): void;
    /**
     * 记录
     * @param op
     */
    record(op: JlOperation): void;
    /**
     * 撤销
     */
    undo(): void;
    /**
     * 重做
     */
    redo(): void;
}