tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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QRCodeWorker.sys.mjs (1971B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 /**
      6 * QRCodeWorker - Worker-based QR code generation
      7 *
      8 * This module provides a worker-based implementation for QR code generation
      9 * to avoid blocking the main thread during QR code processing.
     10 */
     11 
     12 import { BasePromiseWorker } from "resource://gre/modules/PromiseWorker.sys.mjs";
     13 
     14 const lazy = {};
     15 
     16 ChromeUtils.defineLazyGetter(lazy, "logConsole", function () {
     17  return console.createInstance({
     18    prefix: "QRCodeWorker",
     19    maxLogLevel: Services.prefs.getBoolPref("browser.qrcode.log", false)
     20      ? "Debug"
     21      : "Warn",
     22  });
     23 });
     24 
     25 /**
     26 * Worker wrapper for QR code generation
     27 */
     28 export class QRCodeWorker extends BasePromiseWorker {
     29  constructor() {
     30    super("moz-src:///browser/components/qrcode/QRCodeWorker.worker.mjs", {
     31      type: "module",
     32    });
     33 
     34    // Set up logging
     35    this.log = (...args) => lazy.logConsole.debug(...args);
     36  }
     37 
     38  /**
     39   * Simple ping test for worker communication
     40   *
     41   * @returns {Promise<string>} Returns "pong"
     42   */
     43  async ping() {
     44    return this.post("ping", []);
     45  }
     46 
     47  /**
     48   * Check if the QRCode library is available in the worker
     49   *
     50   * @returns {Promise<boolean>} True if library is available
     51   */
     52  async hasQRCodeLibrary() {
     53    return this.post("hasQRCodeLibrary", []);
     54  }
     55 
     56  /**
     57   * Generate a QR code for the given URL
     58   *
     59   * @param {string} url - The URL to encode in the QR code
     60   * @param {string} errorCorrectionLevel - Error correction level (L, M, Q, H)
     61   * @returns {Promise<object>} Object with width, height, and src data URI
     62   */
     63  async generateQRCode(url, errorCorrectionLevel = "H") {
     64    return this.post("generateQRCode", [url, errorCorrectionLevel]);
     65  }
     66 
     67  /**
     68   * Terminate the worker and clean up resources
     69   */
     70  async terminate() {
     71    super.terminate();
     72  }
     73 }