You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
|
/**
|
|
|
|
|
|
* @description 双栈实现撤销恢复
|
|
|
|
|
|
* @author fangzhicong
|
|
|
|
|
|
*/
|
|
|
|
|
|
import { CeilStack } from './stack';
|
|
|
|
|
|
export default class Cache<T> {
|
|
|
|
|
|
protected maxSize: number;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 正常操作（用户输入、js代码修改内容、恢复操作）产生的缓存
|
|
|
|
|
|
*/
|
|
|
|
|
|
protected data: CeilStack<T>;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 撤销操作产生的缓存（恢复操作时需要这些数据）
|
|
|
|
|
|
*/
|
|
|
|
|
|
protected revokeData: CeilStack<T>;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 上一步操作是否为 撤销/恢复
|
|
|
|
|
|
*/
|
|
|
|
|
|
protected isRe: boolean;
|
|
|
|
|
|
constructor(maxSize: number);
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 返回当前栈中的数据长度。格式为：[正常的数据的条数，被撤销的数据的条数]
|
|
|
|
|
|
*/
|
|
|
|
|
|
get size(): number[];
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 重设数据缓存器的缓存长度（第一次有效）
|
|
|
|
|
|
*/
|
|
|
|
|
|
resetMaxSize(maxSize: number): void;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 保存数据
|
|
|
|
|
|
*/
|
|
|
|
|
|
save(data: T): this;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 撤销
|
|
|
|
|
|
* @param fn 撤销时，如果有数据，执行的回调函数
|
|
|
|
|
|
*/
|
|
|
|
|
|
revoke(fn: (data: T) => void): boolean;
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 恢复
|
|
|
|
|
|
* @param fn 恢复时，如果有数据，执行的回调函数
|
|
|
|
|
|
*/
|
|
|
|
|
|
restore(fn: (data: T) => void): boolean;
|
|
|
|
|
|
}
|
