aboutWindowsMessages.js

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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";

let AboutWindowsMessages = null;

function refreshMessages() {

  let windowMessages = {};

  let windowTitles = {};

  AboutWindowsMessages.getMessages(window, windowMessages, windowTitles);

  let windowsDiv = document.getElementById("windows-div");

  windowsDiv.innerHTML = "";

  const templateCard = document.querySelector("template[name=window-card]");

  for (let i = 0; i < windowTitles.value.length; ++i) {

    let windowCard = templateCard.content

      .cloneNode(true)

      .querySelector("details");

    // open the current window by default

    windowCard.open = i === 0;

    let summary = windowCard.querySelector("summary");

    let titleSpan = summary.querySelector("h3.window-card-title");

    titleSpan.appendChild(document.createTextNode(windowTitles.value[i]));

    titleSpan.classList.toggle("current-window", windowCard.open);

    let copyButton = summary.querySelector("button");

    copyButton.addEventListener("click", async e => {

      e.target.disabled = true;

      await copyMessagesToClipboard(e);

      e.target.disabled = false;

});

    let innerUl = document.createElement("ul");

    for (let j = 0; j < windowMessages.value[i].length; ++j) {

      let innerLi = document.createElement("li");

      innerLi.className = "message";

      innerLi.innerText = windowMessages.value[i][j];

      innerUl.appendChild(innerLi);

    windowCard.appendChild(innerUl);

    windowsDiv.append(windowCard);

async function copyMessagesToClipboard(event) {

  const details = event.target.parentElement.parentElement;

  // Avoid copying the window name as it is Category 3 data,

  // and only useful for the user to identify which window

  // is which.

  const messagesText =

    Array.from(details.querySelector("ul").children)

      .map(li => li.innerText)

      .join("\n") + "\n";

  await navigator.clipboard.writeText(messagesText);

function onLoad() {

  refreshMessages();

try {

  AboutWindowsMessages = Cc["@mozilla.org/about-windowsmessages;1"].getService(

    Ci.nsIAboutWindowsMessages

);

  document.addEventListener("DOMContentLoaded", onLoad, { once: true });

} catch (ex) {

  // Do nothing if we fail to create a singleton instance,

  // showing the default no-module message.

  console.error(ex);