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