import { Entity } from './entity';
import { DisposableImpl, Emitter } from '@gedit/utils';
/**
 * 实体的数据块
 */
export declare abstract class EntityData<DATA = any | number | string> extends DisposableImpl {
    protected readonly entity: Entity;
    static type: string;
    protected onDataChangedEmitter: Emitter<EntityData<DATA>>;
    protected _data: DATA;
    private _pauseChanged;
    /**
     * 修改后触发
     */
    readonly onDataChanged: import("@gedit/utils").Event<EntityData<DATA>>;
    /**
     * 初始化数据
     */
    abstract getDefaultData(): DATA;
    constructor(entity: Entity);
    /**
     * data 类型
     */
    get type(): string;
    /**
     * 当前数据
     */
    get data(): DATA;
    /**
     * 更新单个数据
     * @param key
     * @param value
     */
    update(props: Partial<DATA> | keyof DATA | DATA, value?: any): void;
    /**
     * 检测属性是否更改, 默认采用浅比较
     * @param newProps
     */
    checkChanged(newProps: Partial<DATA> | DATA): boolean;
    /**
     * 存储数据, 一般在关闭浏览器后需要暂时存到localStorage
     */
    toJSON(): object;
    /**
     * 还原数据
     */
    fromJSON(data: object): void;
    get pauseChanged(): boolean;
    set pauseChanged(p: boolean);
    fireChanged(): void;
}
export type EntityDataProps<E extends EntityData> = E['data'];
export interface EntityDataRegistry<E extends EntityData = EntityData> {
    new (...args: any[]): E;
    readonly type: E['type'];
}
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