forked from mirrors/gecko-dev
65 lines
1.6 KiB
JavaScript
65 lines
1.6 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.Shims) {
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window.Shims = new Map();
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}
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if (!window.ShimsHelperReady) {
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window.ShimsHelperReady = true;
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browser.runtime.onMessage.addListener(details => {
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const { shimId, warning } = details;
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if (!shimId) {
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return;
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}
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window.Shims.set(shimId, details);
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if (warning) {
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console.warn(warning);
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}
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});
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async function handleMessage(port, shimId, messageId, message) {
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let response;
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const shim = window.Shims.get(shimId);
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if (shim) {
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const { needsShimHelpers, origin } = shim;
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if (origin === location.origin) {
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if (needsShimHelpers?.includes(message)) {
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const msg = { shimId, message };
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try {
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response = await browser.runtime.sendMessage(msg);
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} catch (_) {}
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}
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}
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}
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port.postMessage({ messageId, response });
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}
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window.addEventListener(
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"ShimConnects",
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e => {
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e.stopPropagation();
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e.preventDefault();
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const { port, pendingMessages, shimId } = e.detail;
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const shim = window.Shims.get(shimId);
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if (!shim) {
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return;
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}
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port.onmessage = ({ data }) => {
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handleMessage(port, shimId, data.messageId, data.message);
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};
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for (const [messageId, message] of pendingMessages) {
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handleMessage(port, shimId, messageId, message);
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}
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},
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true
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);
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window.dispatchEvent(new CustomEvent("ShimHelperReady"));
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}
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