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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/. */
// @ts-check
"use strict";
/**
* This file is for the new performance panel that targets profiler.firefox.com,
* not the default-enabled DevTools performance panel.
*/
/**
* @typedef {import("../../client/performance-new/@types/perf").GetActiveBrowserID} GetActiveBrowserID
*/
/**
* Gets the ID of active tab from the browser.
*
* @type {GetActiveBrowserID}
*/
function getActiveBrowserID() {
const win = Services.wm.getMostRecentWindow("navigator:browser");
const browserId = win?.gBrowser?.selectedBrowser?.browsingContext?.browserId;
if (browserId) {
return browserId;
}
console.error(
"Failed to get the active browserId while starting the profiler."
);
// `0` mean that we failed to ge the active browserId, and it's
// treated as null value in the platform.
return 0;
}
module.exports = {
getActiveBrowserID,
};
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