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| /**
| * 页面间通讯
| * @author Tevin
| */
|
| import Taro from '@tarojs/taro';
| import { Tools } from '@components/common/Tools';
|
| export class PagePoster {
|
| constructor() {
| this._data = {
| eventors: {},
| events: {},
| };
| }
|
| save(data) {
| const guid = Tools.createGUID();
| Taro.setStorageSync(guid, JSON.stringify(data));
| return guid;
| }
|
| read(id) {
| const data = Taro.getStorageSync(id);
| Taro.removeStorage({ key: id });
| return JSON.parse(data);
| }
|
| createEventor() {
| const that = this;
| const guid = Tools.createGUID();
| this._data.eventors[guid] = {
| id: guid,
| events: new Taro.Events(),
| on(name, callback) {
| if (!this.events) {
| return;
| }
| this.events.on(name, callback);
| },
| emit(name, data) {
| if (!this.events) {
| return;
| }
| this.events.trigger(name, data);
| },
| destroy() {
| if (!this.events) {
| return;
| }
| // 移除所有监听
| this.events.off();
| this.events = null;
| // 解除 link 的绑定
| if (this.linkCB) {
| this.linkCB(null);
| }
| // 解除引用
| delete that._data.eventors[this.id];
| },
| linkCB: null,
| };
| return this._data.eventors[guid];
| }
|
| linkEventor(guid, linkCB) {
| if (typeof this._data.eventors[guid] === 'undefined') {
| linkCB(null);
| } else {
| const eventor = this._data.eventors[guid];
| eventor.linkCB = linkCB;
| linkCB(eventor);
| setTimeout(() => {
| eventor.emit('@linked');
| }, 0);
| }
| }
|
| }
|
| export const $pagePoster = new PagePoster();
|
|
