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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/* globals browser */
if (!window.Shims) {
window.Shims = new Map();
}
if (!window.ShimsHelperReady) {
window.ShimsHelperReady = true;
browser.runtime.onMessage.addListener(details => {
const { shimId, warning } = details;
if (!shimId) {
return;
}
window.Shims.set(shimId, details);
if (warning) {
console.warn(warning);
}
});
async function handleMessage(port, shimId, messageId, message) {
let response;
const shim = window.Shims.get(shimId);
if (shim) {
const { needsShimHelpers, origin } = shim;
if (origin === location.origin) {
if (needsShimHelpers?.includes(message)) {
const msg = { shimId, message };
try {
response = await browser.runtime.sendMessage(msg);
} catch (_) {}
}
}
}
port.postMessage({ messageId, response });
}
window.addEventListener(
"ShimConnects",
e => {
e.stopPropagation();
e.preventDefault();
const { port, pendingMessages, shimId } = e.detail;
const shim = window.Shims.get(shimId);
if (!shim) {
return;
}
port.onmessage = ({ data }) => {
handleMessage(port, shimId, data.messageId, data.message);
};
for (const [messageId, message] of pendingMessages) {
handleMessage(port, shimId, messageId, message);
}
},
true
);
window.dispatchEvent(new CustomEvent("ShimHelperReady"));
}
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