Reddit - Top Comments Preview

Preview to the top comments on Reddit (optional: autoload comments, autoload images, autohide sidebar)

Versión del día 25/4/2015. Echa un vistazo a la versión más reciente.

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Necesitará instalar una extensión como Tampermonkey para instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==UserScript==
// @name           Reddit - Top Comments Preview
// @namespace      https://greatest.deepsurf.us/users/5174-jesuis-parapluie
// @author         Erik Wannebo, gavin19, jesuis-parapluie
// @description    Preview to the top comments on Reddit (optional: autoload comments, autoload images, autohide sidebar)
// @include        /^https?://(.+\.)?reddit\.com/.*$/
// @exclude        /^https?://(.+\.)?reddit\.com/.+/comments/.*$/
// @grant          meta-detablock
// @grant          GM_getValue
// @grant          GM_setValue
// @version        1.82
// ==/UserScript==
(function () {
  'use strict';
  var topCP = {
    opts: {
      /* Number of comments to display. Default is 3 */
      topComments: 3,
      /* Changes the comment sorting. Available sortings: top, best, new, hot, controversial, old */
      commentSorting: 'top',
      /* Disables the option for hiding the sidebar. */
      disableSidebarButton: false,
      /* Disables the autoloading option for images and comments. */
      disableAutoloadButton: false,
      /* set keyboard shortcut 't' to show/hide active top comments (needs RES) */
      disableShortCut: false
    },
    addTopLinks: function () {
      var i,
      len,
      link,
      li,
      articleID,
      tmp,
      parent,
      a = document.querySelectorAll('.linklisting .comments:not(.empty)');
      if (a.length) {
        for (i = 0, len = a.length; i < len; i += 1) {
          if (!a[i].parentNode.parentNode.querySelector('.toplink') && /[0-9]/.test(a[i])) {
            articleID = a[i].getAttribute('href');
            articleID = articleID.substring(articleID.indexOf('/comments/') + 10, articleID.indexOf('/comments/') + 16);
            link = document.createElement('a');
            li = document.createElement('li');
            //li.className = 'rcp';
            li.appendChild(link);
            link.className = 'toplink';
            tmp = 'java';
            link.href = tmp + 'script:;';
            link.setAttribute('id', 'toplink' + articleID);
            link.setAttribute('style', 'color:orangered;text-decoration:none;');
            link.textContent = ' ' + topCP.opts.commentSorting;
            parent = a[i].parentNode.parentNode;
            parent.insertBefore(li, parent.querySelector('.first + li'));
            topCP.addListener(link, articleID);
            if (GM_getValue('autoLoadComments', false))
            {
              topCP.retrieveTopComments(link, articleID);
            }
          }
        }
      }
    },
    addListener: function (link, id) {
      link.addEventListener('click', function () {
        topCP.retrieveTopComments(this, id);
      });
    },
    retrieveTopComments: function (ele, articleID) {
      var pre,
      url,
      xhr,
      thisPre;
      topCP.kill_preview = function () {
        this.parentNode.removeChild(this);
      };
      ele = ele.parentNode.parentNode.parentNode;
      if (!document.querySelector('#preview' + articleID))
      {
        pre = document.createElement('div');
        pre.setAttribute('id', 'preview' + articleID);
        pre.classList.add('loading');
        ele.insertBefore(pre, ele.querySelector('.expando'));
      }
      if (document.querySelector('#preview' + articleID).classList.contains('loading')) {
        url = window.location.href.split('/') [0] + '//www.reddit.com/comments/' + articleID + '/.json?limit=' + (topCP.opts.topComments + 5) + '&sort=' + topCP.opts.commentSorting;
        xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);
        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        xhr.onreadystatechange = function () {
          if (xhr.readyState === 4 && xhr.status === 200) {
            topCP.onloadJSON(xhr);
          } else if (xhr.status === 503) {
            // Service not available, retry every second
            setTimeout(topCP.retrieveTopComments(ele, articleID), 1000);
          }
        };
        xhr.send(null);
      } else {
        thisPre = document.querySelector('#preview' + articleID);
        thisPre.parentNode.parentNode.style.marginBottom = '';
        thisPre.parentNode.removeChild(thisPre);
      }
    },
    onloadJSON: function (response) {
      var i,
      len,
      content,
      score,
      contentDiv,
      article,
      author,
      permalink,
      newHTML = '',
      comments = JSON.parse(response.responseText),
      commentsLength = comments[1].data.children.length,
      articleID = comments[0].data.children[0].data.id,
      threadLink = comments[0].data.children[0].data.permalink;
      len = topCP.opts.topComments < commentsLength ? topCP.opts.topComments : commentsLength;
      for (i = 0; i < len; i += 1) {
        content = comments[1].data.children[i].data.body_html;
        if (content) {
          contentDiv = document.createElement('div');
          contentDiv.innerHTML = content;
          content = contentDiv.firstChild.textContent;
          author = comments[1].data.children[i].data.author;
          score = comments[1].data.children[i].data.score;
          permalink = threadLink + comments[1].data.children[i].data.id;
          newHTML += (i > 0 ? '<hr>' : '');
          newHTML += '<a class="ulink" target="_blank" href="/u/' + author;
          newHTML += '">' + author + '</a>';
          newHTML += '<span class="points">| score: ' + score + '</span>';
          newHTML += '<a class="permalink" target="_blank" href="' + permalink + '">permalink</a><br />' + content;
        }
      }
      article = document.querySelector('#preview' + articleID);
      if (article) {
        article.classList.remove('loading');
        article.innerHTML = newHTML;
      }
    },
    addStyle: function () {
      var style,
      sheet = '';
      sheet += 'div[id^=preview]{box-sizing:border-box;-moz-box-sizing:border-box;background:#fff;border-radius:5px;border:1px solid #dbdbdb;white-space:normal;padding:5px;display:inline-block;margin:8px 0;}';
      sheet += '.loading:before{content:"Loading...";}div[id^=preview] .md{border:1px solid #ddd;background:#f0f0f0;box-sizing:border-box;-moz-box-sizing:border-box;margin:3px 0;box-sizing:border-box;padding:2px 8px;}';
      sheet += 'div[id^=preview] .md *{white-space:normal;}div[id^=preview] .md code{white-space:pre;}';
      sheet += 'div[id^=preview] .md pre{overflow:visible}div[id^=preview]>*{font-size: small;}';
      sheet += 'div[id^=preview] .ulink,div[id^=preview] .md a{font-weight:bold;color:#369!important;}';
      sheet += '.aubox a.disabled {color: #995F5F;font-weight: normal;}';
      sheet += '.aubox a.enabled {color: #009D2D;font-weight: normal;}';
      sheet += 'a.sideswitch {cursor:pointer;}';
      sheet += '.listing-page .buttons li{vertical-align:top;}.toplink{text-decoration:none;}';
      sheet += '.permalink { float: right; color: #666;}.points{color:#333;font-weight:bold;margin-left:.5em;}';
      sheet += '.res-nightmode div[id^=preview] .ulink,.res-nightmode div[id^=preview] .md a{color: rgb(20, 150, 220)!important;}';
      sheet += '.res-nightmode div[id^=preview]{ background: #333!important;border-color:#666!important}';
      sheet += '.res-nightmode .toplink{color: #eee!important;}';
      sheet += '.res-nightmode div[id^=preview] .points{color: #ddd!important;}';
      sheet += '.res-nightmode div[id^=preview] .permalink{color: #ccc!important;}';
      sheet += '.res-nightmode div[id^=preview] .md{background:#555!important;border-color: #222!important;}';
      sheet += '.res-nightmode div[id^=preview] .md blockquote{color:#8C8C8C!important;}';
      sheet += '.res-nightmode div[id^=preview] hr{border-color:#777!important;}';
      style = document.createElement('style');
      style.type = 'text/css';
      style.textContent = sheet;
      document.querySelector('head').appendChild(style);
    },
    toggle: function (className) {
      (function (style) {
        style.display = style.display === 'none' ? '' : 'none';
      }) (document.querySelector(className).style);
    },
    init: function () {
      if (!topCP.opts.disableSidebarButton)
      {
        var text = 'hide';
        if (GM_getValue('sideBarToggle', true))
        {
          text = 'show';
          topCP.toggle('.side');
        }
        var sidebar = document.createElement('li');
        sidebar.innerHTML = '<a class="sideswitch">' + text + ' sidebar</a>';
        sidebar.addEventListener('click', function (e) {
          topCP.toggle('.side');
          GM_setValue('sideBarToggle', !GM_getValue('sideBarToggle', true));
          var text = 'hide';
          if (GM_getValue('sideBarToggle')) text = 'show';
          document.querySelector('.sideswitch').innerHTML = text + ' sidebar';
        });
        document.querySelector('.tabmenu').appendChild(sidebar);
      } else {
        GM_setValue('sideBarToggle', false);
        document.querySelector('.side').style.display = '';
      }
      if (!topCP.opts.disableAutoloadButton)
      {
        var loadbar = document.createElement('li');
        loadbar.className = 'aubox';
        loadbar.innerHTML = '<a>load</a>';
        if (document.querySelector('#RESConsoleVersion') !== null)
        {
          var expimg = 'disabled';
          if (GM_getValue('autoExpandImages', false)) expimg = 'enabled';
          var spanImages = document.createElement('span');
          spanImages.innerHTML = '<a href="#" class="' + expimg + '">images</a>';
          spanImages.addEventListener('click', function (e) {
            GM_setValue('autoExpandImages', !GM_getValue('autoExpandImages', false));
            location.reload();
          });
          loadbar.appendChild(spanImages);
        }
        var expcom = 'disabled';
        if (GM_getValue('autoLoadComments', false)) expcom = 'enabled';
        var spanComments = document.createElement('span');
        spanComments.innerHTML = '<a href="#" class="' + expcom + '">comments</a>';
        spanComments.addEventListener('click', function (e) {
          GM_setValue('autoLoadComments', !GM_getValue('autoLoadComments', false));
          location.reload();
        });
        loadbar.appendChild(spanComments);
        document.querySelector('.tabmenu').appendChild(loadbar);
      } else {
        GM_setValue('autoExpandImages', false);
        GM_setValue('autoLoadComments', false);
      }
      document.body.addEventListener('DOMNodeInserted', function (e) {
        if ((e.target.tagName === 'DIV') && (e.target.getAttribute('id') && e.target.getAttribute('id').indexOf('siteTable') !== - 1)) {
          topCP.addTopLinks();
        }
      }, true);
      document.body.addEventListener('DOMNodeInserted', function (e) {
        if ((e.target.tagName === 'DIV') && (e.target.getAttribute('id') && e.target.getAttribute('id').indexOf('siteTable') !== - 1)) {
          topCP.addTopLinks();
        }
      }, true);
      if (!topCP.opts.disableShortCut && document.querySelector('#RESConsoleVersion') !== null)
      {
        window.addEventListener('keyup', function (e) {
          //t: keycode 84
          if (e.keyCode === 84 && document.querySelector('.RES-keyNav-activeElement')) {
            document.querySelector('.RES-keyNav-activeElement .toplink').click();
          }
        });
        if (GM_getValue('autoExpandImages', false))
        {
          document.querySelector('#viewImagesButton').click();
        }
      }
      topCP.addStyle();
      topCP.addTopLinks();
    }
  };
  if (document.body) {
    setTimeout(function () {
      topCP.init();
    }, 300);
  } else {
    window.addEventListener('load', function () {
      topCP.init();
    }, false);
  }
}) ();