forked from mirrors/gecko-dev
82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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/* globals browser */
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if (!window.LiveTestShimPromise) {
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const originalUrl = document.currentScript.src;
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const shimId = "LiveTestShim";
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const sendMessageToAddon = (function () {
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const pendingMessages = new Map();
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const channel = new MessageChannel();
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channel.port1.onerror = console.error;
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channel.port1.onmessage = event => {
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const { messageId, response } = event.data;
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const resolve = pendingMessages.get(messageId);
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if (resolve) {
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pendingMessages.delete(messageId);
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resolve(response);
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}
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};
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function reconnect() {
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const detail = {
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pendingMessages: [...pendingMessages.values()],
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port: channel.port2,
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shimId,
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};
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window.dispatchEvent(new CustomEvent("ShimConnects", { detail }));
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}
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window.addEventListener("ShimHelperReady", reconnect);
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reconnect();
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return function (message) {
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const messageId =
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Math.random().toString(36).substring(2) + Date.now().toString(36);
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return new Promise(resolve => {
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const payload = {
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message,
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messageId,
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shimId,
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};
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pendingMessages.set(messageId, resolve);
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channel.port1.postMessage(payload);
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});
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};
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})();
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async function go(options) {
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try {
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const o = document.getElementById("shims");
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const cl = o.classList;
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cl.remove("red");
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cl.add("green");
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o.innerText = JSON.stringify(options || "");
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} catch (_) {}
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if (window !== top) {
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return;
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}
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await sendMessageToAddon("optIn");
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const s = document.createElement("script");
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s.src = originalUrl;
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document.head.appendChild(s);
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}
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window[`${shimId}Promise`] = sendMessageToAddon("getOptions").then(
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options => {
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if (document.readyState !== "loading") {
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go(options);
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} else {
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window.addEventListener("DOMContentLoaded", () => {
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go(options);
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});
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}
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}
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);
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}
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