设计思路备忘笔记...
使用场景:各种全局弹窗..例如登录弹窗,设置弹窗,模态通用的Confirm对话框等等....
吐槽:在C#/C++/JS/SQL间反复横跳,这个月又轮到的JS....我也真是醉了
以vueJs得ts版本为例:
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例如有组件:
*.vue:
<template> <div v-if="bShow" class="game-setting-dialog"> <div class="container"> <h2>Hi, Singleton Component</h2> </div> </div> </template> <script lang="ts" src="./index.ts"></script> <style scoped lang="stylus"> .game-setting-dialog position : fixed; top : 0; height : 100%; width : 100%; z-index : 1; text-align : center; background : rgba( 0, 0, 0, 0.7 ); .container background : red; width : 50%; top : 10vh; min-height : 100px; </style>
*.TS脚本:
import {Vue,Prop,Component}from 'vue-property-decorator' import { Store } from 'vuex'; @Component({ name: 'GameSettingDialog' }) export default class GameSettingDialogComponent extends Vue { private _bShow:boolean = false; mounted() { } get bDialog():boolean { return this._bShow ; } set bDialog(val:boolean) { this._bShow = false; } }
初始化 单例访问函数:
init.ts:
import Vue,{} from 'vue'; import GameSettingDialog from '@/views/Singleton/GameSettingDialog/index.vue'; import GameSettingDialogComponent from '@/views/Singleton/GameSettingDialog/index.ts'; import store from '@/store/index'; import router from '@/router/index'; let instance : any| null = null; //构造一个新的Vue实例句柄..... /** * App初始化时调用... */ export default function InitilizeGameSettingDialog() { //往Vue类里写入一个`静态函数’ $gameSettingDialog Vue.prototype.$gameSettingDialog = (opt?:any)=> { if (!instance) { //如果单例未创建... let div = document.createElement('div'); instance = new GameSettingDialog({ el : div , store : store , // 如果用到vuex需要包含 router : router // 同route }); document.body.appendChild(instance.$el); } return instance as GameSettingDialogComponent; }; }
编写一个*.d.ts,重新扩展Vue类的接口成员:
import Vue, {VNode} from 'vue' import GameSettingDialogComponent from '@/views/Singleton/GameSettingDialog/index.ts' declare module 'vue/types/vue' { interface Vue { /** Displays a global notification message at the upper right corner of the page */ $gameSettingDialog:(opt?:any) => GameSettingDialogComponent } }
然后还mian中调用初始化函数即可,如:
//#region import 区域 import Vue from 'vue'; import App from './App.vue'; import './registerServiceWorker'; import router from './router'; import store from './store'; import InitGameSettingDialog from '@/views/Singleton/GameSettingDialog/init'; import '@/assets/css/common.styl'; import 'default-passive-events'; //#endregion Vue.config.productionTip = false; //注入全局唯一组件到整个Vue App中... InitGameSettingDialog(); new Vue({ router : router , store : store , render : (h) => h(App) }).$mount('#app');
任意Vue组件中,使用this.$xxxx调用,例如:
this.$gameSettingDialog().bDialog = true; this.$gameSettingDialog().$once('custom-event', ()=> { console.log('事件绑定'); this.$gameSettingDialog().bDialog = false; });
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为什么要这样实现?
因为优雅......(战术后仰)
而且如果是多项目通用的唯一组件,这种方式封装成插件...基本是开箱即用....
vuex,vue-route 都是这样子实现全局唯一的...