src/contentScripts/communityConsole/batchLock.js

import {removeChildNodes, createExtBadge} from './utils.js';

export function nodeIsReadToggleBtn(node) {
  return ('tagName' in node) && node.tagName == 'MATERIAL-BUTTON' &&
      node.getAttribute('debugid') !== null &&
      (node.getAttribute('debugid') == 'mark-read-button' ||
       node.getAttribute('debugid') == 'mark-unread-button') &&
      ('parentNode' in node) && node.parentNode !== null &&
      ('parentNode' in node.parentNode) &&
      node.parentNode.querySelector('[debugid="batchlock"]') === null &&
      node.parentNode.parentNode !== null &&
      ('tagName' in node.parentNode.parentNode) &&
      node.parentNode.parentNode.tagName == 'EC-BULK-ACTIONS';
}

export function addBatchLockBtn(readToggle) {
  var clone = readToggle.cloneNode(true);
  clone.setAttribute('debugid', 'batchlock');
  clone.classList.add('TWPT-btn--with-badge');
  clone.setAttribute('title', chrome.i18n.getMessage('inject_lockbtn'));
  clone.querySelector('material-icon').setAttribute('icon', 'lock');
  clone.querySelector('i.material-icon-i').textContent = 'lock';

  var badge = createExtBadge();
  clone.append(badge);

  clone.addEventListener('click', function() {
    var modal = document.querySelector('.pane[pane-id="default-1"]');

    var dialog = document.createElement('material-dialog');
    dialog.setAttribute('role', 'dialog');
    dialog.setAttribute('aria-modal', 'true');
    dialog.classList.add('TWPT-dialog');

    var header = document.createElement('header');
    header.setAttribute('role', 'presentation');
    header.classList.add('TWPT-dialog-header');

    var title = document.createElement('div');
    title.classList.add('TWPT-dialog-header--title', 'title');
    title.textContent = chrome.i18n.getMessage('inject_lockbtn');

    header.append(title);

    var main = document.createElement('main');
    main.setAttribute('role', 'presentation');
    main.classList.add('TWPT-dialog-main');

    var p = document.createElement('p');
    p.textContent = chrome.i18n.getMessage('inject_lockdialog_desc');

    main.append(p);

    dialog.append(header, main);

    var footers = [['lock', 'unlock', 'cancel'], ['reload', 'close']];

    for (var i = 0; i < footers.length; ++i) {
      var footer = document.createElement('footer');
      footer.setAttribute('role', 'presentation');
      footer.classList.add('TWPT-dialog-footer');
      footer.setAttribute('data-footer-id', i);

      if (i > 0) footer.classList.add('is-hidden');

      footers[i].forEach(action => {
        var btn = document.createElement('material-button');
        btn.setAttribute('role', 'button');
        btn.classList.add('TWPT-dialog-footer-btn');
        if (i == 1) btn.classList.add('is-disabled');

        switch (action) {
          case 'lock':
          case 'unlock':
            btn.addEventListener('click', _ => {
              if (btn.classList.contains('is-disabled')) return;
              var message = {
                action,
                prefix: 'TWPT-batchlock',
              };
              window.postMessage(message, '*');
            });
            break;

          case 'cancel':
          case 'close':
            btn.addEventListener('click', _ => {
              if (btn.classList.contains('is-disabled')) return;
              modal.classList.remove('visible');
              modal.style.display = 'none';
              removeChildNodes(modal);
            });
            break;

          case 'reload':
            btn.addEventListener('click', _ => {
              if (btn.classList.contains('is-disabled')) return;
              window.location.reload()
            });
            break;
        }

        var content = document.createElement('div');
        content.classList.add('content', 'TWPT-dialog-footer-btn--content');
        content.textContent =
            chrome.i18n.getMessage('inject_lockdialog_btn_' + action);

        btn.append(content);
        footer.append(btn);
      });

      var clear = document.createElement('div');
      clear.style.clear = 'both';

      footer.append(clear);
      dialog.append(footer);
    }

    removeChildNodes(modal);
    modal.append(dialog);
    modal.classList.add('visible', 'modal');
    modal.style.display = 'flex';
  });

  var duplicateBtn =
      readToggle.parentNode.querySelector('[debugid="mark-duplicate-button"]');
  if (duplicateBtn)
    duplicateBtn.parentNode.insertBefore(
        clone, (duplicateBtn.nextSibling || duplicateBtn));
  else
    readToggle.parentNode.insertBefore(
        clone, (readToggle.nextSibling || readToggle));
}