Bitbucket Cloud Keyboard Shortcuts

Adds keyboard shortcuts to collapse comments, and show/hide comments.
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// ==UserScript==
// @name        Bitbucket Cloud Keyboard Shortcuts
// @description Adds keyboard shortcuts to collapse comments, and show/hide comments.
//              Updated for new PR experience 2024.
// @namespace   http://jvdl.dev/
// @version     2.1
// @grant       none
// @match       https://bitbucket.org/*/*
// @author      John van der Loo <[email protected]>
// @license     MIT
// ==/UserScript==
;(function() {

  const rules = [
    // hide the whole comment
    `.comments-toggled-hidden .bitkit-diff-inline-content-container {
      display: none;
    }`,
    // hide the main comment content
    `.comments-toggled-collapsed .bitkit-diff-inline-content-container .ak-renderer-document {
      display: none;
    }`,
    // fade out the main comment
    `.comments-toggled-collapsed .bitkit-diff-inline-content-container div[id^="comment-"] {
      opacity: 0.5;
      row-gap: 0;
    }`,
    // a little heavy-handed, but hides the BB provided collapse button
    `.comments-toggled-collapsed .bitkit-diff-inline-content-container button {
      display: none;
    }`,
    // vertically center the name
    `.comments-toggled-collapsed .bitkit-diff-inline-content-container div[id^="comment-"] > div:nth-child(2) {
      padding-top: 6px;
    }`,
    // hide the actions row at the bottom of the comment
    `.comments-toggled-collapsed .bitkit-diff-inline-content-container div[id^="comment-"] > div:nth-child(2) > div > div:nth-child(3) {
      display: none;
    }`,
    // notification styles for the hidden comments
    `.comments-hidden-notification {
      position: fixed;
      bottom: 0px;
      padding: 10px;
      width: 100%;
      z-index: 9999;
      text-align: center;
    }`,
    `.comments-toggled-collapsed .comments-hidden-notification,
    .comments-toggled-hidden .comments-hidden-notification {
      display: block;
    }`,
    `.comments-hidden-notification span {
      display: none;
      padding: 10px;
      border-radius: 6px;
      border: 1px solid #ccc;
      background-color: white;
    `,
    `.comments-toggled-hidden .comments-hidden-notification__hidden,
    .comments-toggled-collapsed .comments-hidden-notification__collapsed {
      display: inline-block;
    }`,
    `.comments-hidden-notification kbd {
      border: 1px solid #ccc;
      background-color: #eee;
      padding: 1px 6px;
      border-radius: 3px;
    }`,
  ];

  /**
   * Add some CSS rules to the document
   * @param {Array<string>} rules - an array of rules
   */
  function addStylesheetRules(rules) {
    const styleEl = document.createElement('style');
    document.head.appendChild(styleEl);
    rules.forEach(rule => styleEl.sheet.insertRule(rule, styleEl.sheet.cssRules.length));
  }
  addStylesheetRules(rules);

  /**
   *
   * @param {KeyboardEvent} e
   * @returns
   */
  function keydownHandler(e) {
    // don't execute the handler if the target is in a place where normal keyboard input is required
    if (e.target.matches('input, textarea, button, [contenteditable="true"]')) {
      return;
    }

    // ignore all of these if the metaKey (cmd/win/meta) is down
    if (e.metaKey) {
      return
    }

    if (e.key === 'c') {
      console.debug('Toggling comment collapsing');
      e.preventDefault();
      document.body.classList.remove('comments-toggled-hidden')
      return document.body.classList.toggle('comments-toggled-collapsed');
    }
    if (e.key === 'C' && e.shiftKey === true) {
      console.debug('Toggling comment visibility');
      e.preventDefault();
      document.body.classList.remove('comments-toggled-collapsed')
      return document.body.classList.toggle('comments-toggled-hidden');
    }

  }

  const commentNotification = document.createElement('div');
  commentNotification.classList.add('comments-hidden-notification');
  commentNotification.innerHTML = `
  <span class="comments-hidden-notification__hidden">Comments are hidden. Press <kbd>Shift + C</kbd> to show them</span>
  <span class="comments-hidden-notification__collapsed">Comments are collapsed. Press <kbd>c</kbd> to show them</span>
  `;
  document.body.appendChild(commentNotification);

  document.addEventListener('keydown', keydownHandler);

}());