persagy_topo_editer/src/components/editClass/edit/commands/SGraphAddCommand.ts

/*
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 *      .&888888I                                          Copyright (c) 2016-2020.  博锐尚格科技股份有限公司
 *        ~8888'
 *        .!88~                                                                     All rights reserved.
 *
 * *********************************************************************************************************************
 */

import { SGraphCommand } from "./SGraphCommand";
import { SGraphItem, SGraphScene } from "@persagy-web/graph/";
import { SUndoCommand } from "@persagy-web/base";

/**
 * 添加 item 命令
 *
 * @author 韩耀龙 <han_yao_long@163.com>
 */
export class SGraphAddCommand extends SGraphCommand {
    /** 命令名称 */
    readonly command: string;
    /** 命令 item 对象 */
    item: SGraphItem;
    /** 命令 item 的父类 */
    parent: SGraphItem | null;

    /**
     * 构造函数
     *
     * @param scene   item 所在场景
     * @param item    命令 item 对象
     */
    constructor(scene: SGraphScene, item: SGraphItem) {
        super(scene);
        this.item = item;
        this.parent = item.parent;
        this.command = "SGraphAddCommand";
        this.desc = `添加对象=${item.id}`;
    }

    /**
     * 合并命令
     *
     * @param command   命令对象
     * @return 是否已执行合并
     */
    mergeWith(command: SUndoCommand): boolean {
        return false;
    }

    /**
     * 重做
     */
    redo(): void {
        this.item.parent = this.parent;
        // @ts-ignore
        this.parent.update();
    }

    /**
     * 撤销
     */
    undo(): void {
        this.item.parent = null;
        // @ts-ignore
        this.parent.update();
    }
}