From 8726e3080bd889ea67ceb26f9ca7039025e20452 Mon Sep 17 00:00:00 2001
From: Tevin <tingquanren@163.com>
Date: Thu, 08 Jul 2021 17:16:51 +0800
Subject: [PATCH] 实现页面间通讯公共模块
---
common/PagePoster.js | 71 +++++++++++++++++++++++++++++++++++
1 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/common/PagePoster.js b/common/PagePoster.js
new file mode 100644
index 0000000..0ffd4c2
--- /dev/null
+++ b/common/PagePoster.js
@@ -0,0 +1,71 @@
+/**
+ * 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) {
+ this.events.on(name, callback);
+ },
+ emit(name, data) {
+ this.events.trigger(name, data);
+ },
+ destroy() {
+ // 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;
+ eventor.emit('@linked');
+ linkCB(eventor);
+ }
+ }
+
+}
+
+export const $pagePoster = new PagePoster();
\ No newline at end of file
--
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