Fixdit for Reddit Redesign

UX enhancements for Reddit's 2018 redesign: filters, collapse child comments, subreddit info...

目前为 2018-06-05 提交的版本。查看 最新版本

// ==UserScript==
// @name         Fixdit for Reddit Redesign
// @namespace    http://tampermonkey.net/
// @version      0.6.8
// @description  UX enhancements for Reddit's 2018 redesign: filters, collapse child comments, subreddit info...
// @author       scriptpost (u/postpics)
// @match        https://www.reddit.com/*
// @require      https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_listValues
// @grant        GM_deleteValue
// @noframes
// ==/UserScript==
(function ($, undefined) {
  $(function () {
    if (!$('#hamburgers').length) return; // probably using old site.
    const _stylesheet = String.raw`<style type="text/css" id="fixdit">.fixd_filter_msg button:hover,button.fixd_collapse:hover,button.fixd_collapse_all:hover{text-decoration:underline}#fixd_launch{box-sizing:border-box;position:fixed;top:2px;right:2px;width:24px;height:24px;z-index:100;text-align:center;border-radius:50%;border:2px solid hsla(70,0%,100%,.5);border-left-color:hsla(70,0%,0%,1);border-right-color:hsla(70,0%,0%,1);background:0 0;cursor:pointer;-moz-user-select:none;user-select:none}#fixd_launch.fixd_active{border-color:hsla(70,0%,100%,.5);border-top-color:hsla(70,0%,0%,1);border-bottom-color:hsla(70,0%,0%,1)}#fixd_launch:not(.fixd_active):hover:before{content:"Fixdit settings...";display:inline-block;padding:6px 12px;font-size:80%;color:#fff;position:absolute;right:calc(100% + 12px);white-space:nowrap;background:hsla(0,0%,0%,.8);border-radius:2px;pointer-events:none}#fixd_settings{position:fixed;top:0;right:0;opacity:0;z-index:101;padding:24px 12px;background:hsla(180,2%,90%,.95);border-radius:3px;box-shadow:0 5px 10px hsla(0,0%,0%,.25),0 0 3px hsla(0,0%,0%,.25);font-size:80%;width:300px;visibility:hidden;overflow:hidden;transition:visibility .2s,height .2s,bottom .2s,left .2s,top .2s,right .2s,opacity .2s}#fixd_settings.fixd_active{visibility:visible;opacity:1;top:5px;right:24px}#fixd_settings.fixd_expanded{bottom:5px}#fixd_settings .fixd_dialog,#fixd_settings .fixd_dialog>div{position:absolute;top:0;left:0;bottom:0;border-radius:4px;right:0}body.fixd_debug #fixd_settings:after{display:block;margin-top:4px;content:"Version " attr(data-version);text-align:right;font-size:12px;color:#7f7f7f}.fixd_description{margin:12px 0 0;line-height:1.3}#fixd_settings h2,#fixd_settings h3{font-weight:400;display:inline-block;margin-bottom:10px;vertical-align:middle}#fixd_settings h1{font-size:140%;font-weight:400;margin:0 0 .5em}#fixd_settings h2{font-size:120%}#fixd_settings h3{font-size:100%}#fixd_settings h3 span{display:block;margin-top:4px;font-size:120%}#fixd_settings .fixd_option,#fixd_settings .fixd_option_btn,#fixd_settings .fixd_option_select,#fixd_settings .fixd_switch{display:block;margin:1px -12px 0;cursor:default;-moz-user-select:none;user-select:none;background:#f3f0f0}#fixd_settings .fixd_option_select input,#fixd_settings .fixd_switch input{vertical-align:middle}#fixd_settings .fixd_option_btn{margin:1px -12px;cursor:default}#fixd_settings .fixd_option_btn:after{content:" >";color:#999;font-weight:700;float:right}#fixd_settings .fixd_option_btn:hover:after{color:#000}#fixd_settings .fixd_option_btn:hover,#fixd_settings .fixd_setting:hover{outline:hsla(0,0%,0%,.3) solid 1px}#fixd_settings .fixd_option_btn,#fixd_settings .fixd_option_select,#fixd_settings .fixd_switch{padding:10px 16px}#fixd_settings .fixd_enabled{background:#fff}#fixd_settings .fixd_switch:not(.fixd_option){font-size:120%;margin-bottom:8px;background:#f3f0f0}#fixd_settings .fixd_switch.fixd_enabled:not(.fixd_option){color:#000;background:#fff}#fixd_settings .fixd_option span{padding-left:.3em}#fixd_settings .fixd_dialog>div{padding:24px 12px 8px;background:#e4e6e6;display:flex;flex-direction:column}.fixd_dialog textarea{box-sizing:border-box;min-width:100%;max-width:100%;min-height:50px;max-height:100%;border:1px solid #fff;flex:1}.fixd_settings_buttons{text-align:right;margin:6px 0}.fixd_btn_back,.fixd_btn_save{text-transform:uppercase;border:1px solid transparent;border-radius:2px;vertical-align:middle}.fixd_btn_back{font-weight:700;color:transparent;margin-right:12px;padding:0;overflow:hidden;width:30px;height:30px;line-height:30px;margin-bottom:10px;border:1px solid #ccc;background:0 0}.fixd_btn_back:hover{border:1px solid #666}.fixd_btn_back:before{color:#000;content:"< "}.fixd_btn_save{color:#fff;padding:8px 24px;background:#0076b2;cursor:pointer}.fixd_btn_save:hover{background-color:#0087cc}button.fixd_collapse,button.fixd_collapse_all{cursor:pointer;color:inherit;display:inline-block;background:0 0;outline:0;font-size:12px;font-weight:700}a+button.fixd_collapse{margin-left:10px}button.fixd_collapse_all{margin-left:20px;color:#a6a4a4;font-size:12px;font-weight:700;text-transform:uppercase}button.fixd_collapse:before,button.fixd_collapse_all:before{content:"Hide "}button.fixd_collapse:after,button.fixd_collapse_all:after{content:" <<"}button.fixd_collapse.fixd_active:before,button.fixd_collapse_all.fixd_active:before{content:"Show "}button.fixd_collapse.fixd_active:after,button.fixd_collapse_all.fixd_active:after{content:" >"}#fixd_indicators{position:fixed;top:40px;right:0;z-index:100}.fixd_observer_indicator{box-sizing:border-box;margin:5px 0 0;width:20px;height:15px;border:1px solid hsla(0,0%,0%,.2);background:hsla(0,0%,50%,.2);transition:all .3s}.fixd_observer_indicator.fixd_active{border-color:hsla(0,0%,0%,1);background:hsla(0,0%,100%,1)}.fixd_observer_indicator.fixd_active:before,.fixd_observer_indicator:hover:before{content:attr(data-fixd-name);display:block;position:absolute;margin-top:-1px;right:100%;white-space:nowrap;color:#fff;font-size:11px;padding:3px 6px;background:hsla(0,0%,0%,.4);pointer-events:none}.fixd_observer_indicator:hover:before{background:hsla(0,0%,0%,.8)}.fixd_popup{box-sizing:border-box;position:absolute;z-index:100;padding:12px;font-size:12px;border-radius:4px;border-top:4px solid #c1cfd6;color:#1c1c1c;background-color:#fff;box-shadow:rgba(0,0,0,.2) 0 1px 3px;overflow:hidden}#fixd_popup_subreddit.fixd_subscriber{border-top-color:#0076d1}.fixd_popup>div{float:left}.fixd_popup>div:nth-of-type(2){width:200px;margin-left:12px;padding-left:12px;border-left:1px solid #edeff1}.fixd_popup .fixd_popup_subs span,.fixd_popup h2{display:block;font-size:16px;font-weight:500;line-height:20px}.fixd_filtered .Comment,.fixd_no_blank .icon-outboundLink,.fixd_popup:not(.fixd_filterable) .fixd_popup_filter,.fixd_unfiltered .fixd_filter_msg{display:none}.fixd_popup .fixd_popup_created,.fixd_popup .fixd_popup_subs{font-weight:500}.fixd_popup .fixd_popup_subs{margin-top:12px}.fixd_popup h2:before{content:"r/"}.fixd_popup .fixd_popup_subtitle{margin-bottom:.5em;color:#7f7f7f}.fixd_popup .fixd_popup_desc{color:#7f7f7f;line-height:1.2}.fixd_popup .fixd_popup_desc,.fixd_popup .fixd_popup_title{margin:0 0 .5em}.fixd_popup_filter{font-size:12px;text-transform:uppercase;padding:8px 12px;margin-top:12px;border-radius:2px;color:#fff;border:1px solid transparent;background:#0076d1;cursor:pointer}.fixd_popup_filter.fixd_active{color:#0076d1;border:1px solid;background:#fff}.fixd_popup_filter.fixd_active:before{content:"un"}.fixd_tooltip{pointer-events:none}body:not(.fixd_debug) .fixd_hidden{visibility:hidden;position:absolute}body.fixd_debug .fixd_hidden{opacity:.6}body.fixd_debug .fixd_filtered{outline:#dc143c solid 1px}body.fixd_debug .fixd_unfiltered{outline:green solid 1px}.fixd_filter_msg{font-size:12px;color:#878a8c}.fixd_filter_msg em{font-style:italic}.fixd_filter_msg button{content:"Show comment";color:inherit;background:0 0;cursor:pointer;margin:12px 0 0 12px}button.fixd_no_icon.fixd_active[data-click-id=upvote]{color:#f40!important}button.fixd_no_icon.fixd_active[data-click-id=downvote]{color:#7091ff!important}button.fixd_no_icon[data-click-id=upvote]:hover{color:#cc3600}button.fixd_no_icon[data-click-id=downvote]:hover{color:#5b75cc}button.fixd_no_icon[data-click-id=upvote]:before,button.fixd_no_icon[data-click-id=downvote]:before{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:redesignFont}button.fixd_no_icon[data-click-id=upvote]:before{content:"\F12A"}button.fixd_no_icon[data-click-id=downvote]:before{content:"\F107"}body.fixd_reduce_comment_spacing .Comment.top-level{margin-top:0}body.fixd_debug .fixd_no_blank{outline:#00f solid 1px}</style>`;
    $('body').append(_stylesheet);

    // TODO:
    // Add notification each time settings are changed.
    // Add observer to hidden comments.
    // Add option to change the color of visited links.
    // Observer for switching from comment permalink to all comments.
    // Find more observers to add.
    // strip_prefixes doesn't fire when switching view or page location.
    // Firefox adds horiz scrollbar to window when static header enabled.

    // CHANGELOG (latest):
    // Prevent settings from flashing on page load.
    // Fix issues on user profile page.
    // Fix subreddit info popup not disappearing sometimes.
    // Optimize overall efficiency.
    // Improved overall consistency and reliability.
    // Remove ability to disable internal/required features.
    // Remove ability to toggle options of type 'radio'.
    // Oserver for switching view.

    class Feature {
      constructor(data) {
        this.loaded = JSON.parse(GM_getValue('features', '{}'));

        if (this.loaded.hasOwnProperty(data.id)) {
          data.enabled = this.loaded[data.id].enabled;
        }
        else {
          const db_entry = this.loaded;

          db_entry[data.id] = {
            enabled: data.enabled,
            options: {}
          };

          GM_setValue('features', JSON.stringify(db_entry));
          this.enabled = data.enabled;
        }

        this.feature = data;
        this.setting = Feature.add_setting(data);
        this.options = {};
        this.public = {};
      }

      static add_setting(data) {
        return new Setting(data);
      }

      add_option(option) {
        const loaded_options = this.loaded[this.feature.id].options;
        let is_stored = loaded_options.hasOwnProperty(option.id);
        const is_choices = option.hasOwnProperty('choices');

        // Check if outdated values are in storage and reset to new values.
        // TBDL: Remove this code after June 10.
        if (is_stored && is_choices) {
          if (option.type === 'radio') {
            const is_outdated = isNaN(loaded_options[option.id].value);
            if (is_outdated) {
              is_stored = false;
            }
          }
          else if (option.type === 'checkbox') {
            const is_oudated = isNaN(loaded_options[option.id].value[0]);
            if (is_oudated) {
              is_stored = false;
            }
          }
        }
        // Remove 'enabled' from storage if it's deprecated.
        // TBDL: Remove this code after June 10.
        if (is_stored && !option.hasOwnProperty('enabled') &&
          loaded_options[option.id].hasOwnProperty('enabled')) {
          let db_entry = this.loaded;
          delete db_entry[this.feature.id].options[option.id].enabled;
          delete loaded_options[option.id].enabled;
          GM_setValue('features', JSON.stringify(db_entry));
        }
        if (is_stored) {
          // Modify passed object.
          if (option.hasOwnProperty('enabled')) {
            option.enabled = loaded_options[option.id].enabled;
          }
          if (loaded_options[option.id].hasOwnProperty('value')) {
            option.value = loaded_options[option.id].value;
          }
        }
        else {
          // Continue without modifying.
          const db_entry = this.loaded;
          db_entry[this.feature.id].options[option.id] = {};

          if (option.hasOwnProperty('value')) {
            db_entry[this.feature.id].options[option.id].value = option.value;
          }
          db_entry[this.feature.id].options[option.id].enabled = option.enabled;
          GM_setValue('features', JSON.stringify(db_entry));
          this.loaded = db_entry;
        }
        this.options[option.id] = new Option(option);
      }

      set toggle(fn) {
        this.setting.toggle = fn;
      }

      // arg: object
      set options_toggle(functions) {
        this.options_triggers = functions;
      }

      redraw() {
        // Finds all the changed options and updates their appearance.
        // Also calls any provided callback functions.
        this.setting.redraw();
        for (var oid in this.options) {
          const new_val = this.loaded.options[oid].enabled;
          const current_val = this.options[oid].enabled;

          if (new_val !== current_val) {
            const fid = this.feature.id;
            this.options[oid].enabled = new_val;

            const panel = '.fixd_options[data-id="' + fid + '"]';
            const dialog = '.fixd_dialog[data-id="' + oid + '"]';
            const $btn = $(panel + ' .fixd_option[data-id="' + oid + '"]');
            const $switch = $(dialog + ' .fixd_switch[data-id="' + oid + '"]');

            $btn.add($switch).each((idx, el) => {
              if (el.classList.contains('fixd_enabled')) {
                el.classList.remove('fixd_enabled');
              }
              else {
                el.classList.add('fixd_enabled');
              }
            });

            if (this.options_triggers &&
              this.options_triggers.hasOwnProperty(oid) &&
              this.setting.enabled) {
              this.options_triggers[oid](new_val);
            }
          }
        }
      }

      set update(data) {
        this.setting.enabled = data.enabled;
        this.loaded = data;
        this.redraw();
      }
    }

    class Setting {
      constructor(data) {
        for (let key in data) {
          this[key] = data[key];
        }

        this.button = $('<div>', {
          "text": data.label,
          "class": "fixd_option_btn",
          "data-click-id": "fixd_setting",
          "data-id": data.id
        })[0];

        if (data.enabled) {
          $(this.button).addClass('fixd_enabled');
        }
        if (!data.hidden) {
          $('#fixd_settings .fixd_panel:not(.fixd_options)').append(this.button);
        }
      }

      redraw() {
        const el = $('.fixd_options .fixd_switch:not(.fixd_option)[data-id="' + this.id + '"]')[0];
        if (this.enabled) {
          $(el).add(this.button).addClass('fixd_enabled');
        }
        else {
          $(el).add(this.button).removeClass('fixd_enabled');
        }
        if (this.toggle) {
          this.toggle(this.enabled);
        }
      }
    }

    class Option {
      constructor(data) {
        for (let key in data) {
          this[key] = data[key];
        }
      }
    }
    /**
     * Creates an observer wrapper that can be extended from anywhere.
     * Each time an RO is extended, it disconnects the last observer
     * and adds a new one in its place with all the added functions.
     * When there's a mutation and a condition is met, it loops over
     * all the saved functions (from this.actions).
     */
    class Reddit_Observer {
      constructor(info) {
        this.name = info.name;
        this.target = info.target;
        this.options = { childList: true };
        if (info.subtree) {
          this.options.subtree = true;
        }
        this.actions = [];
        this.connect(info.target);
      }
      set any(callback) {
        this.any_basis = callback;
      }
      set added(callback) {
        this.added_basis = callback;
      }
      set removed(callback) {
        this.removed_basis = callback;
      }
      get records() {
        if (this.observer) {
          return this.observer.takeRecords();
        }
      }
      loop_actions(a, b) {
        for (var i = 0; i < this.actions.length; i++) {
          this.actions[i](this, a, b);
        }
      }
      extend(fn) {
        this.actions.push(fn);
        if (this.target) {
          this.connect();
        }
      }
      connect(newTarget) {
        if (newTarget) {
          this.target = newTarget;
        }
        else if (!this.target) {
          return console.warn("Can't connect observer because target node is undefined");
        }
        const self = this;
        const mutation = function (mutations) {
          for (let i = 0; i < mutations.length; i++) {
            const a = mutations[i].addedNodes;
            const r = mutations[i].removedNodes;
            if (self.added_basis && a.length && a[0].nodeType === Node.ELEMENT_NODE) {
              self.added_basis(self, a[0], mutations[i]);
            }
            else if (self.removed_basis && r.length && r[0].nodeType === Node.ELEMENT_NODE) {
              self.removed_basis(self, r[0], mutations[i]);
            }
            else if (self.any_basis) {
              self.any_basis(self, mutations[i]);
            }
          }
        };
        if (this.observer) {
          this.observer.disconnect();
        }
        this.observer = new MutationObserver(mutation);
        this.observer.observe(this.target, this.options);
      }
    }
    // Set up pre-defined Observers:
    const Body_Obs = new Reddit_Observer({
      name: 'Body',
      target: document.body
    });
    const Page_Subtree_Obs = new Reddit_Observer({
      name: 'Page subtree',
      target: $('#hamburgers + div')[0],
      subtree: true
    });
    const Post_Obs = new Reddit_Observer({
      name: 'Post',
      target: (() => {
        const p = document.getElementsByClassName('Post');
        if (p.length) {
          return p[0].parentNode.parentNode.parentNode;
        }
      })()
    });
    const Comment_Obs = new Reddit_Observer({
      name: 'Comment',
      target: (() => {
        const c = document.getElementsByClassName('Comment');
        if (c.length) {
          return c[0].parentNode.parentNode.parentNode.parentNode;
        }
      })()
    });
    const Lb_Obs = new Reddit_Observer({
      name: 'L-box',
      target: document.getElementById('hamburgers').parentNode.parentNode
    });
    const Lb_Subtree_Obs = new Reddit_Observer({
      name: 'L-box sub',
      target: document.getElementById('lightbox'),
      subtree: true
    });
    const Lb_TT_Obs = new Reddit_Observer({
      name: 'L-box tooltip',
      target: document.getElementById('overlayAbsoluteTooltipContent')
    })
    const Side_Obs = new Reddit_Observer({
      name: 'Side',
      target: document.getElementsByClassName('fixd--side')[0]
    });
    // Handle each mutation:
    const added_to_body = (self, node, mutation) => {
      self.loop_actions(node);
    };
    Body_Obs.added = added_to_body;

    const added_to_page_subtree = (self, node, mutation) => {
      const posts = node.getElementsByClassName('Post');
      const lb = document.getElementById('lightbox');
      if (posts.length) {
        const list = posts[0].parentNode.parentNode.parentNode;
        if (list === node || list.parentNode === node || node.parentNode === self.target) {
          Post_Obs.connect(list);
          Side_Obs.connect(document.getElementsByClassName('fixd--side')[0]);
          self.loop_actions(node);
        }
      }
      else if (node.classList.contains('Post')) {
        self.loop_actions(node);
      }
    };
    Page_Subtree_Obs.added = added_to_page_subtree;

    const added_to_post_list = (self, node, mutation) => {
      if (node.getElementsByClassName('Post')[0]) {
        self.loop_actions(node);
      }
    };
    Post_Obs.added = added_to_post_list;

    const added_to_comment_list = (self, node, mutation) => {
      if (node.getElementsByClassName('Comment')[0]) {
        self.loop_actions(node, mutation);
      }
    };
    Comment_Obs.added = added_to_comment_list;

    const add_remove_lightbox = (self, mutation) => {
      if (mutation.addedNodes.length) {
        const lb = document.getElementById('lightbox');
        Lb_Subtree_Obs.connect(lb);
        const comments = lb.getElementsByClassName('Comment');
        if (comments.length) {
          // Loaded from memory.
          const list = comments[0].parentNode.parentNode.parentNode.parentNode;
          Comment_Obs.connect(list);
          self.loop_actions(list, mutation);
        }
        Side_Obs.connect(lb.childNodes[0].childNodes[1]);
        Lb_TT_Obs.connect(document.getElementById('overlayAbsoluteTooltipContent'));
      } else {
        Lb_Obs.connect();
      }
    };
    Lb_Obs.any = add_remove_lightbox;

    const added_to_lightbox = (self, node, mutation) => {
      const comments = node.getElementsByClassName('Comment');
      if (comments.length) {
        const list = comments[0].parentNode.parentNode.parentNode.parentNode;
        if (list.parentNode === node) {
          Comment_Obs.connect(list);
          Side_Obs.connect(self.target.childNodes[0].childNodes[1]);
          self.loop_actions(node, mutation);
        }
      }
    };
    Lb_Subtree_Obs.added = added_to_lightbox;

    const added_lb_tooltip = (self, node, mutation) => {
      self.loop_actions(node, mutation);
    };
    Lb_TT_Obs.added = added_lb_tooltip;

    const added_to_side = (self, node, mutation) => {
      self.loop_actions(node, mutation);
    };
    Side_Obs.added = added_to_side;

    const UT = {
      format_date: {
        age: date => {
          // https://stackoverflow.com/a/23286781
          const diff_date = new Date(new Date() - date);
          let y = diff_date.toISOString().slice(0, 4) - 1970;
          let m = diff_date.getMonth() + 0;
          let d = diff_date.getDate();
          let result;
          if (y > 0) result = (y === 1) ? y + ' year' : y + ' years';
          else if (m > 0) result = (m === 1) ? m + ' month' : m + ' months';
          else result = (d === 1) ? d + ' day' : d + ' days';
          return result;
        }
      },
      get_post_author_link: node => {
        const $context = $(node).find('div[data-click-id="body"] > div:nth-of-type(2)');
        let links;
        if ($context.length) {
          links = $context[0].getElementsByTagName('a');
          for (let i = 0; i < links.length; i++) {
            const href = links[i].getAttribute('href');
            if (href && href.startsWith('/user/')) {
              return links[i];
            }
          }
        }
      },
      is_page_type: (keyword) => {
        let result;
        switch (keyword) {
          case 'profile':
            result = !!document.getElementById('profile-nav-menu-tooltip');
            break;
          case 'search':
            result = !!document.getElementById('search-results-sort');
            break;
        }
        return result;
      }
    };

    const get_reddit_data = function (kind, name) {
      return new Promise(function (resolve, reject) {
        let url;
        const key = kind + '_' + name;
        const cache = JSON.parse(GM_getValue('cache', '{}'));
        let ratelimit = JSON.parse(GM_getValue('ratelimit_get', '{}'));

        if (cache[key]) {
          resolve(cache[key]);
        }
        else if (!ratelimit.remaining || ratelimit.remaining > 150) {
          const req = new XMLHttpRequest();
          url = '/r/' + name + '/about.json';
          req.open('GET', url);

          req.onload = function () {
            if (req.status === 200) {
              const response = JSON.parse(this.response).data;
              let json_data = cache;

              ratelimit = {
                used: this.getResponseHeader('x-ratelimit-used'),
                remaining: this.getResponseHeader('x-ratelimit-remaining'),
                reset: this.getResponseHeader('x-ratelimit-reset')
              };

              json_data[key] = {
                name: response.display_name,
                title: response.title,
                subtitle: response.header_title,
                desc: response.public_description,
                created: response.created,
                subs: response.subscribers,
                subscriber: response.user_is_subscriber
              };

              GM_setValue('ratelimit_get', JSON.stringify(ratelimit));
              GM_setValue('cache', JSON.stringify(json_data));
              resolve(json_data[key]);
            }
            else {
              reject(Error(req.statusText));
            }
          };
          req.onerror = function () {
            reject(Error("Network Error"));
          };
          req.send();
        } else if (ratelimit.remaining) {
          reject(ratelimit.remaining + ' requests remaining.');
        }
      })
    };

    /**
     * // TBDL: deprecate.
     * @param {string} html_tag Element to look inside.
     * @param {string} query Inner text to match against.
     * @param {Node} context Region to search.
     */
    var getElementByText = function (html_tag, query, context) {
      const result = document.evaluate(
        "//" + html_tag + "[contains(., '" + query + "')]",
        context, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
      return result;
    };

    const clear_cache = (() => {
      let ratelimit = JSON.parse(GM_getValue('ratelimit_get', '{}'));
      if (ratelimit.used !== undefined && ratelimit.used <= 1) {
        GM_setValue('cache', '{}');
      }
    })();

    const settings_form = function () {
      const layout = $('<div>', {
        "id": "fixd_settings",
        'data-version': GM_info.script.version
      }).append($('<div>', {
        "class": "fixd_panel"
      }).append($('<h1>', {
        "text": "Fixdit Settings"
      })))[0];

      layout.addEventListener('click', handle_settings_click, false);
      return layout;
    };

    const draw_options_panel = function (fid) {
      const settings = $('#fixd_settings')[0];
      const feature = FT[fid];

      const setting_toggle = $('<label>', {
        "html": '<input type="checkbox"> On',
        "data-click-id": 'fixd_setting_toggle',
        "data-id": fid,
        "class": "fixd_switch"
      })[0];

      const panel = $('<div>', {
        "class": "fixd_panel fixd_options"
      })[0];

      const btn_back = $('<button>', {
        "data-click-id": "fixd_back",
        "class": "fixd_btn_back",
        "text": "Back"
      })[0];

      settings.appendChild(panel);

      panel.dataset.id = feature.setting.id;
      panel.appendChild(btn_back);
      panel.appendChild($('<h2>', {
        "text": feature.setting.label
      })[0]);
      if (!feature.setting.hidden) {
        panel.appendChild(setting_toggle);
      }
      if (feature.setting.enabled) {
        setting_toggle.querySelector('input').setAttribute('checked', 'checked');
        setting_toggle.classList.add('fixd_enabled');
      }
      for (var oid in feature.options) {
        draw_option_item(panel, feature.options[oid]);
      }
    };

    const draw_option_item = function (panel, option) {
      const label = document.createTextNode(option.label);
      const row = $('<label>', {
        "class": "fixd_option",
        "data-id": option.id
      })[0];

      if (option.hidden) return;

      // Will it be a checkbox or button?
      if (!option.type || option.type !== 'bool') {
        row.dataset.clickId = "fixd_option_btn";
        row.appendChild($('<div>', {
          "class": "fixd_option_btn",
          "text": option.label
        })[0]);
        row.classList.add('fixd_option_btn');
        row.innerText = option.label;
      }
      else {
        row.classList.add('fixd_switch');
        row.dataset.clickId = "fixd_option_toggle";
        row.innerHTML = '<input type="checkbox"> ' + option.label;
      }
      if (option.enabled || option.type === 'radio') {
        row.classList.add('fixd_enabled');
        let checkbox = row.querySelector('input');
        if (checkbox) {
          checkbox.setAttribute('checked', 'checked');
        }
      }
      panel.appendChild(row);
    };

    const append_option_selector = function (el, data, saved) {
      for (let uid in data.choices) {
        if (isNaN(uid)) {
          saved = data; // Reset outdated saved values.
        }
        const choice = data.choices[uid];
        const row = $('<label>', {
          'html': '<input type="checkbox"> ' + choice[1],
          'class': 'fixd_option_select'
        })[0];
        const input = row.querySelector('input');

        input.setAttribute('name', 'fixd_option_choices');
        input.setAttribute('value', uid);

        if (data.type === 'radio') {
          input.setAttribute('type', 'radio');
        }
        if (saved.value.includes(uid)) {
          input.setAttribute('checked', 'checked');
          row.classList.add('fixd_enabled');
        }
        el.appendChild(row);
      };
    };

    const draw_option_dialog = function (oid) {
      const panel = $('#fixd_settings .fixd_options')[0];
      const fid = $(panel).data('id');
      const saved = JSON.parse(GM_getValue('features', '{}'));
      const option = FT[fid].options[oid];
      const saved_option = saved[fid].options[oid];

      if (option.type === 'list') {
        saved_option.value.sort((a, b) => {
          return a.localeCompare(b, 'en', { 'sensitivity': 'base' });
        });
      }
      const dialog = panel.appendChild($('<div>', {
        "data-id": oid,
        "class": "fixd_dialog"
      })[0]);
      const dialog_content = dialog.appendChild($('<div>')[0]);
      const header = $('<div>', {
        "class": "fixd_settings_header"
      })[0];
      dialog_content.appendChild(header);
      header.appendChild($('<button>', {
        "data-click-id": "fixd_back",
        "class": "fixd_btn_back",
        "text": "Back"
      })[0]);
      header.appendChild($('<h3>', {
        "html": FT[fid].setting.label + '<span>' + option.label + '</span>'
      })[0]);
      if (option.type !== 'radio') {
        const toggle = $('<label>', {
          "html": '<input type="checkbox"> On',
          "data-click-id": 'fixd_option_toggle',
          "data-id": option.id,
          "class": "fixd_switch"
        })[0];
        dialog_content.appendChild(toggle);
        if (saved_option.enabled) {
          toggle.classList.add('fixd_enabled');
          toggle.querySelector('input').setAttribute('checked', 'checked');
        }
      }
      if (option.description) {
        dialog_content.appendChild($('<div>', {
          "class": "fixd_description",
          "html": option.description
        })[0]);
      }
      const buttons = $('<div>', {
        "class": "fixd_settings_buttons"
      })[0];
      dialog_content.appendChild(buttons);
      buttons.appendChild($('<button>', {
        "data-click-id": "fixd_save",
        "class": "fixd_btn_save",
        "text": "Save changes"
      })[0]);
      if (option.type === 'list') {
        dialog_content.appendChild($('<textarea>', {
          "data-click-id": "fixd_option_value",
          "text": saved_option.value.join('\n')
        })[0]);
      }
      else if (option.hasOwnProperty('choices')) {
        append_option_selector(dialog_content, option, saved_option);
      }
      $('#fixd_settings').addClass('fixd_expanded').append(dialog).css({});
    };

    const close_dialog = function () {
      $('#fixd_settings').removeClass('fixd_expanded');
      $('#fixd_settings .fixd_dialog').remove();
    };

    const handle_submit = function (ev) {
      const panel = $('#fixd_settings .fixd_options')[0];
      const fid = panel.dataset.id;
      const oid = document.getElementById('fixd_selected_option').dataset.id;
      const saved = JSON.parse(GM_getValue('features', '{}'));
      const feature = FT[fid];
      const option = feature.options[oid];
      let db_entry = saved;
      if (option.type === 'list') {
        let value = $('#fixd_settings .fixd_dialog textarea').val();
        value = value.replace(/[^a-zA-Z\d\n#._-]/mg, "");
        db_entry[fid].options[oid].value = value.split('\n');
      }
      else if (option.hasOwnProperty('choices')) {
        const inputs = document.getElementsByName('fixd_option_choices');
        // Clear the old value before repopulating.
        db_entry[fid].options[oid].value = [];

        $(inputs).each((idx, el) => {
          if (el.value && el.checked) {
            if (option.type === 'radio') {
              db_entry[fid].options[oid].value[0] = el.value;
              return false;
            }
            else {
              db_entry[fid].options[oid].value[idx] = el.value;
            }
          }
        });
      }
      GM_setValue('features', JSON.stringify(db_entry));
      close_dialog();
    };

    const handle_back = function (ev) {
      if (document.getElementsByClassName('fixd_dialog').length) {
        close_dialog();
      }
      else {
        $('#fixd_settings .fixd_options').remove();
        $('#fixd_settings .fixd_panel:not(.fixd_options)').show();
      }
    };

    const close_settings = ev => {
      $('#fixd_settings, #fixd_launch').removeClass('fixd_active');
      close_dialog();
    };

    const handle_settings_click = (ev) => {
      if (ev.target.dataset.clickId === 'fixd_setting') {
        $('#fixd_settings .fixd_panel:not(.fixd_options)').hide();
        draw_options_panel(ev.target.dataset.id);
      }
      if (ev.target.dataset.clickId === 'fixd_option_btn') {
        const oid = ev.target.dataset.id;
        let selected = document.getElementById('fixd_selected_option');
        if (selected) {
          selected.removeAttribute('id');
        }
        ev.target.id = 'fixd_selected_option';
        draw_option_dialog(oid);
      }
      if (ev.target.dataset.clickId === 'fixd_save') {
        handle_submit(ev);
      }
      if (ev.target.dataset.clickId === 'fixd_back') {
        handle_back(ev);
      }
      if ($(ev.target).hasClass('fixd_switch') || $(ev.target.parentNode).hasClass('fixd_switch')) {
        let fid = $('#fixd_settings .fixd_options').data('id');
        let oid = ev.target.dataset.id || ev.target.parentNode.dataset.id;
        if (!ev.target.dataset.id) {
          // Checkbox has been clicked by user or label.
          handle_settings_switch(ev, fid, oid);
        }
      }
      if ($(ev.target).hasClass('fixd_option_select') ||
        $(ev.target.parentNode).hasClass('fixd_option_select')) {
        if (ev.target.tagName === 'INPUT') {
          if (ev.target.getAttribute('type') === 'radio') {
            let choices = document.getElementsByName('fixd_option_choices');
            $(choices).parent().removeClass('fixd_enabled');
          }
          ev.target.parentNode.classList.toggle('fixd_enabled');
        }
      }
    };
    $('body').append(settings_form);

    document.addEventListener('click', ev => {
      const path = ev.composedPath();
      const launcher = document.getElementById('fixd_launch');
      const settings = document.getElementById('fixd_settings');
      const popup = document.getElementsByClassName('fixd_popup')[0];
      if (!path.includes(popup)) {
        FT.subreddit_info.public.close_popup();
      }
      if (!path.includes(launcher) &&
        !path.includes(settings)) {
        close_settings();
      }
      if (ev.target.dataset.clickId === 'fixd_launcher') {
        if ($(ev.target).hasClass('fixd_active')) {
          close_settings();
        }
        else {
          $('#fixd_launch, #fixd_settings').addClass('fixd_active');
          $('#fixd_settings .fixd_options').remove();
          $('#fixd_settings .fixd_panel:not(.fixd_options)').show();
        }
      }
    });
    const handle_settings_switch = function (ev, fid, oid) {
      const saved = JSON.parse(GM_getValue('features', '{}'));
      const feature = FT[fid];
      const clicked = ev.target.dataset.clickId || ev.target.parentNode.dataset.clickId;

      let db_entry = saved;
      if (clicked === 'fixd_setting_toggle') {
        if (saved[fid].enabled) {
          db_entry[fid].enabled = false;
        }
        else {
          db_entry[fid].enabled = true;
        }
      }
      else {
        let option = feature.options[oid];
        if (saved[fid].options[oid].enabled) {
          db_entry[fid].options[oid].enabled = false;
        }
        else {
          db_entry[fid].options[oid].enabled = true;
        }
      }
      GM_setValue('features', JSON.stringify(db_entry));
      feature.update = db_entry[fid];
    }
    // Begin modules/features.
    const OBS = {
      on_add: {},
      on_rem: {},
      on_any: {}
    };
    const FT = {};
    FT.ui_selectors = (() => {
      var feature = new Feature({
        id: "ui_selectors",
        label: "Add UI Selectors",
        enabled: true,
        internal: true,
        hidden: true
      });
      const tag_subreddits_boxes = (arg) => {
        let context = arg;
        let is_profile = UT.is_page_type('profile');
        let lightbox = document.getElementById('lightbox');
        $(context).find('button').each((idx, el) => {
          if (['SUBSCRIBE', 'UNSUBSCRIBE'].includes(el.innerText.toUpperCase())) {
            const item = el.parentNode.parentNode;
            // TBDL: img/svg selectors should be more precise.
            const img = item.getElementsByTagName('img');
            const svg = item.getElementsByTagName('svg');
            if (img.length === 1 || svg.length === 1) {
              let $contents = $(item).parent().parent();
              if (is_profile && !lightbox) {
                $contents = $contents.parent();
              }
              let $h3 = $contents.find('> h3');
              if ($h3.length === 1) {
                let $container = $contents.parent().parent();
                $container.addClass('fixd--subreddits');
                return false;
              }
            }
          }
        });
        context = $('.fixd--subreddits').filter(':last').next()[0];
        let button_text = $(context).find('button:first').text().toUpperCase();
        if (['SUBSCRIBE', 'UNSUBSCRIBE'].includes(button_text)) {
          // Repeat
          tag_subreddits_boxes(context);
        }
      };
      // TBDL: reduce repitition:
      var init = function () {
        let $page, $content, $side, posts;
        let lightbox = document.getElementById('lightbox');
        let is_profile = UT.is_page_type('profile');

        if (!lightbox) {
          let comment_sort_pick = document.getElementById('CommentSort--SortPicker');
          $page = $('#hamburgers + div').addClass('fixd--page');
          posts = document.getElementsByClassName('Post');
          $content = $(posts[0]).parent().parent().parent().parent().parent();
          if (comment_sort_pick) {
            $content = $(posts[0]).parent().parent().parent();
          }
          else if (is_profile) {
            $content = $content.parent().parent();
          }
        }
        else {
          $content = $(lightbox).find('.Post').parent().parent();
        }
        $content.addClass('fixd--content');
        $side = $content.find('+ div').addClass('fixd--side');

        if ($side.length) {
          // Side_Obs.connect($side[0].childNodes[0].childNodes[1]);
          const moderators_h3 = getElementByText('h3', 'Moderators', $side[0]).iterateNext();
          $(moderators_h3).parent().addClass('fixd--moderators');
          tag_subreddits_boxes($side[0]);
        }
      };
      init();
      Page_Subtree_Obs.extend((self, mutation) => {
        init();
      });
      Lb_Obs.extend((self, mutation) => {
        init();
      });
      Lb_Subtree_Obs.extend((self, mutation) => {
        init();
      });
      Side_Obs.extend((self, mutation) => {
        init();
      });
      return feature;
    })();
    FT.ui_tweaks = (() => {
      var feature = new Feature({
        id: "ui_tweaks",
        label: "UI Tweaks",
        enabled: false
      });
      feature.add_option({
        id: "no_prefix",
        label: "No prefixes for subreddits, users",
        type: "bool",
        enabled: false
      });
      feature.add_option({
        id: "no_blanks",
        label: "All links can open in current tab",
        type: "bool",
        enabled: false
      });
      feature.add_option({
        id: "override_vote_icons",
        label: "Override custom vote icons",
        enabled: false,
        type: "bool"
      });
      feature.add_option({
        id: "static_header",
        label: "Make the top bar stationary/static",
        enabled: false,
        type: "bool",
        update: 'test' // TBDL: function to be called when option is modified
      });
      feature.add_option({
        id: "reduce_comment_spacing",
        label: "Reduce comment spacing",
        enabled: false,
        type: 'bool'
      });

      const init_override_vote_icon = function (el) {
        if (!el.childNodes.length) {
          // Remove style override so we can search the url string for active/inactive
          el.style.background = '';
          const computed_style = window.getComputedStyle(el);
          const bg_value = computed_style.getPropertyValue('background-image');
          const class_list = ['fixd_no_icon'];

          if (bg_value.includes('IconInactive')) {
            class_list.push('fixd_inactive');
          }
          else if (bg_value.includes('IconActive')) {
            class_list.push('fixd_active');
          }
          $(el).addClass(class_list.join(' '));
          el.style.background = 'none';
        }
      };

      const init_override_vote_icons = function (context) {
        if (feature.options.override_vote_icons.enabled) {
          const selector = 'button[data-click-id="upvote"], button[data-click-id="downvote"]';
          $(context).find(selector).each((idx, el) => {
            init_override_vote_icon(el);
          });
        }
      };

      const strip_prefixes = function (node) {
        if (feature.options.no_prefix.enabled) {
          let u = UT.get_post_author_link(node);
          if (u) {
            u.innerText = u.innerText.replace("u/", "");
          }
          let s = $(node).find('a[data-click-id="subreddit"]');
          s.each((idx, el) => {
            if (!el.children.length) {
              el.innerText = el.innerText.replace("r/", "");
            }
          });
        }
      };
      const remove_blanks = function (context) {
        if (feature.options.no_blanks.enabled) {
          const anchors = context.getElementsByTagName('a');
          for (let i = 0; i < anchors.length; i++) {
            if (anchors[i].getAttribute('target')) {
              anchors[i].removeAttribute('target');
              anchors[i].classList.add('fixd_no_blank');
            }
          }
        }
      };
      const static_header = (enabled) => {
        if (enabled) {
          document.querySelector('body > div #header').style.position = 'absolute';
        } else {
          document.querySelector('body > div #header').style.position = '';
        }
      };

      const reduce_comment_spacing = (enabled) => {
        if (enabled) {
          document.body.classList.add('fixd_reduce_comment_spacing');
        } else {
          document.body.classList.remove('fixd_reduce_comment_spacing');
        }
      }

      feature.options_toggle = {
        'static_header': static_header,
        'reduce_comment_spacing': reduce_comment_spacing
      };

      if (feature.setting.enabled) {
        static_header(feature.options.static_header.enabled);
        reduce_comment_spacing(feature.options.reduce_comment_spacing.enabled);
        init_override_vote_icons(document.body);
        remove_blanks(document);
        const posts = document.getElementsByClassName('Post');
        for (let i = 0; i < posts.length; i++) {
          strip_prefixes(posts[i]);
        }
        Body_Obs.extend((self, node) => {
          remove_blanks(node);
        });
        Lb_Obs.extend((self, mutation) => {
          init_override_vote_icons(self.target);
          remove_blanks(self.target);
        });
        Lb_Subtree_Obs.extend((self, mutation) => {
          init_override_vote_icons(document.getElementById('lightbox'));
          remove_blanks(self.target);
        });
        Page_Subtree_Obs.extend((self, node) => {
          const posts = node.getElementsByClassName('Post');
          for (let i = 0; i < posts.length; i++) {
            strip_prefixes(posts[i]);
          }
          remove_blanks(node);
          init_override_vote_icons(node);
        });
        Post_Obs.extend((self, node) => {
          strip_prefixes(node);
          init_override_vote_icons(node);
          remove_blanks(node);
        });
        Comment_Obs.extend((self, node) => {
          init_override_vote_icons(node);
          remove_blanks(node);
        });
        $(document).click(ev => {
          if (['upvote', 'downvote'].includes(ev.target.dataset.clickId)) {
            init_override_vote_icons(ev.target.parentNode);
          }
        });
      }
      return feature;
    })();
    FT.filter_content = (function () {
      const feature = new Feature({
        id: "filter_content",
        label: "Filter Content",
        enabled: true
      });
      feature.add_option({
        id: "subreddits",
        label: "Posts by subreddit",
        type: "list",
        enabled: true,
        description: "One subreddit name per line. No commas or slashes. Ignores search results.",
        value: []
      });
      feature.add_option({
        id: "users",
        label: "Posts by user",
        description: "One user name per line. No commas or slashes. Ignores search results.",
        type: "list",
        enabled: false,
        value: []
      });
      feature.add_option({
        id: "comments",
        label: "Comments by user",
        description: "One user name per line. No commas or slashes.",
        type: "list",
        enabled: false,
        value: []
      });
      const blocked_subs = feature.options.subreddits;
      const blocked_submitters = feature.options.users;
      const blocked_comments = feature.options.comments;

      const regex = {
        url_subreddit: /.*\/r\//i,
        url_user: /.*\/user\//i
      };

      const is_match = function (query, list) {
        let result = list.findIndex(item => query.toUpperCase() === item.toUpperCase());
        if (result !== -1) {
          return true;
        }
      };

      const init_posts = function (context) {
        const posts = context.getElementsByClassName('Post');
        for (let i = 0; i < posts.length; i++) {
          filter_post(posts[i].parentNode.parentNode);
        }
      };

      const init_comments = function (context) {
        const comments = context.getElementsByClassName('Comment');
        for (let i = 0; i < comments.length; i++) {
          filter_comment(comments[i].parentNode.parentNode.parentNode);
        }
      };

      const filter_post = function (node) {
        // if (document.getElementById('lightbox') || UT.is_page_type('profile')) return;
        let sub_href, user_href;
        if (feature.options.subreddits.enabled) {
          sub_href = $(node).find('.Post a[data-click-id="subreddit"]:first').attr('href');
        }
        if (feature.options.users.enabled) {
          let user_link = UT.get_post_author_link(node);
          if (user_link) {
            user_href = user_link.getAttribute('href');
          }
        }
        if (sub_href) {
          let sub_name = sub_href.replace(regex.url_subreddit, "").replace("/", "");

          // TEST:
          if (node.classList.contains('fixd_hidden')) {
            console.error("Already filtered", node);
          }

          if (is_match(sub_name, blocked_subs.value)) {
            node.classList.add('fixd_hidden');
          }
        }
        if (!node.classList.contains('fixd_hidden') && user_href) {
          let user_name = user_href.replace(regex.url_user, "").replace("/", "");

          if (is_match(user_name, blocked_submitters.value)) {
            node.classList.add('fixd_hidden');
          }
        }
      };

      const filter_comment = function (node) {
        let user_link = $(node).find('.Comment > div:nth-of-type(2) > div > div > a:first').attr('href');
        let is_hidden = !!node.getElementsByClassName('icon-expand').length;
        if (!user_link || is_hidden) return false;

        let user_name = user_link.replace(regex.url_user, "");
        user_name = user_name.replace("/", "");

        if (is_match(user_name, blocked_comments.value)) {
          node.classList.add('fixd_filtered');

          let cid;
          node.querySelector('.Comment').classList.forEach(str => {
            const match = /^t1_/.exec(str);
            if (match) {
              cid = match.input;
              return false;
            }
          });

          let c_node = document.getElementById(cid);

          $(c_node).append($('<div>', {
            'html': "<span>" + user_name + "</span> <em>(Fixdit filtered)</em>",
            'class': "fixd_filter_msg"
          }).append($('<button>', {
            'text': 'Show comment',
            'data-click-id': "fixd_unfilter_btn"
          })));
        }
      };

      const handle_body_click = (ev) => {
        let clicked = ev.target;
        if (clicked.dataset.clickId === 'fixd_unfilter_btn') {
          // TBDL: reconnect comment_change observer for fixd_collapse.
          let comment = $(clicked).parents('.fixd_filtered')[0];

          if (comment.classList.contains('fixd_filtered')) {
            comment.classList.replace('fixd_filtered', 'fixd_unfiltered');
          }
          else if (comment.classList.contains('fixd_unfiltered')) {
            comment.classList.replace('fixd_unfiltered', 'fixd_filtered');
          }
        }
      };
      if (feature.setting.enabled) {
        if (feature.options.comments.enabled) {
          init_comments(document);
          document.body.addEventListener('click', handle_body_click, false);
          Lb_Obs.extend((self, node) => {
            init_comments(node);
          });
          Lb_Subtree_Obs.extend((self, node) => {
            init_comments(node);
          });
          Comment_Obs.extend((self, node) => {
            filter_comment(node);
          });
        }

        if (feature.options.subreddits.enabled || feature.options.users.enabled) {
          init_posts(document); // page loaded
          Page_Subtree_Obs.extend((self, node) => {
            init_posts(node);
          });
          Post_Obs.extend((self, node) => {
            filter_post(node);
          });
        }
      }
      return feature;
    })();
    FT.subreddit_info = (function () {
      const feature = new Feature({
        id: "subreddit_info",
        label: "Subreddit Info Box",
        enabled: true
      });
      feature.add_option({
        id: 'delay',
        label: 'Popup delay',
        choices: {
          1: ['short', 'Short', 200],
          2: ['medium', 'Medium', 400],
          3: ['long', 'Long', 700]
        },
        value: ['2'],
        type: 'radio'
      });
      const delay_uid = feature.options.delay.value[0];
      const delay_open = feature.options.delay.choices[delay_uid][2] || 400;
      const delay_close = 100;
      let tmo_open;
      let tmo_close;

      const get_popup = function (ev) {
        feature.public.close_popup();
        const box = $('<div>', {
          "id": "fixd_popup_subreddit",
          "class": 'fixd_popup'
        }).css({ 'display': 'none' })[0];

        box.addEventListener('click', ev => {
          if (ev.target.classList.contains('fixd_popup_filter')) {
            const saved = JSON.parse(GM_getValue('features', '{}'));
            const name = $('#fixd_popup_subreddit').data('id');
            let db_entry = saved;
            const arr = saved.filter_content.options.subreddits.value;
            if (ev.target.classList.contains('fixd_active')) {
              const idx = arr.indexOf(name);
              db_entry.filter_content.options.subreddits.value.splice(idx);
              ev.target.classList.remove('fixd_active');
            }
            else {
              db_entry.filter_content.options.subreddits.value.push(name);
              ev.target.classList.add('fixd_active');
            }
            GM_setValue('features', JSON.stringify(db_entry));
          }
        }, false);

        box.addEventListener('mouseover', ev => {
          window.clearTimeout(tmo_close);
        }, false);

        box.addEventListener('mouseleave', ev => {
          feature.public.close_popup();
        }, false);
        return box;
      };

      const add_popup = (data, ev) => {
        const box = get_popup(ev);
        const classes = [];
        const filter_btn_classes = ["fixd_popup_filter"];
        const saved = JSON.parse(GM_getValue('features', '{}'));
        const filter_data = saved.filter_content.options.subreddits;
        if (data.subscriber) {
          classes.push('fixd_subscriber');
        }
        if (saved.filter_content.enabled && filter_data.enabled) {
          classes.push('fixd_filterable');
          if (filter_data.value.includes(data.name)) {
            filter_btn_classes.push('fixd_active');
          }
        }
        let document_width = $('html')[0].offsetWidth;
        let target_offset = $(ev.target).offset().left;
        let offset_left = target_offset;
        if ((document_width - target_offset) < (document_width / 2)) {
          offset_left -= 240;
        }
        $(box)
          .attr('data-id', data.name)
          .addClass(classes.join(' '))
          .css({
            top: $(ev.target).offset().top + ev.target.offsetHeight,
            left: offset_left,
            display: ''
          })
          .append($('<div>')
            .append($('<h2>', {
              "class": "fixd_popup_name",
              "text": data.name
            }))
            .append($('<div>', {
              "class": "fixd_popup_created",
              "html": data.created
            }))
            .append($('<div>', {
              "class": "fixd_popup_subs",
              "html": '<span>' + data.subs + '</span> Subscribers'
            }))
            .append($('<button>', {
              "class": filter_btn_classes.join(' '),
              "text": 'Filter'
            }))
          )
          .append($('<div>')
            .append($('<div>', {
              "class": "fixd_popup_title",
              "text": data.title
            }))
            .append($('<div>', {
              "class": "fixd_popup_subtitle",
              "text": data.subtitle
            }))
            .append($('<div>', {
              "class": "fixd_popup_desc",
              "html": data.desc
            }))
          );
        document.body.appendChild(box);
      };

      const init_popup = function (ev) {
        let name = ev.target.getAttribute('href').split('/')[2];
        get_reddit_data('t5', name).then((data) => {
          const date_created = new Date(data.created * 1000);
          const formatted = {
            name: data.name,
            title: data.title,
            subtitle: data.subtitle,
            created: UT.format_date.age(date_created),
            subs: data.subs.toLocaleString(),
            subscriber: data.subscriber,
            desc: data.desc
          };
          add_popup(formatted, ev);
        }, function (error) {
          console.warn("Error retrieving subreddit info popup.", error);
        });
      };

      feature.public.close_popup = (ev) => {
        $('#fixd_popup_subreddit').remove();
      };

      if (feature.setting.enabled) {
        let mouse_over = document.body.addEventListener('mouseover', ev => {
          if (ev.target.tagName === 'A') {
            let a = ev.target;
            if ((a.dataset.clickId === 'subreddit' ||
              $(a).parents('p, .md, .fixd--subreddits').length) &&
              a.getAttribute('href').startsWith('/r/')) {

              window.clearTimeout(tmo_open);
              window.clearTimeout(tmo_close);

              tmo_open = window.setTimeout(() => {
                init_popup(ev);
              }, delay_open);

              let mouse_out = (ev) => {
                ev.target.removeEventListener('mouseleave', mouse_out);
                window.clearTimeout(tmo_open);

                tmo_close = window.setTimeout(() => {
                  feature.public.close_popup();
                }, delay_close);
              };
              a.addEventListener('mouseleave', mouse_out, false);
            }
          }
        }, false);
      }
      return feature;
    })();
    FT.comments_collapse = (function () {
      const feature = new Feature({
        id: "comments_collapse",
        label: "Collapsible Child Comments",
        enabled: true
      });
      feature.add_option({
        id: 'auto',
        type: 'bool',
        label: 'Automatically collapse children',
        enabled: false
      });

      const auto_on = feature.options.auto.enabled;

      const init = function (context, is_mutate) {
        let lb = document.getElementById('lightbox');
        if (!lb && UT.is_page_type('profile')) return;
        let comments = context.getElementsByClassName('Comment');
        if (comments.length) {
          let comments_list = comments[0].parentNode.parentNode.parentNode.parentNode.childNodes;
          const sort_picker = $('#CommentSort--SortPicker').parent()[0];
          const btn_all_classList = ['fixd_collapse_all'];
          if (auto_on && !is_mutate) {
            btn_all_classList.push('fixd_active');
          }
          const $btn_all = $('<button>', {
            "text": "children",
            "class": btn_all_classList.join(' ')
          });
          if (sort_picker) {
            $(sort_picker).append($btn_all);
          }
          for (var i = 0; i < comments_list.length; i++) {
            init_comment(comments_list[i], is_mutate);
          }
        }
      };

      const init_comment = function (item, is_mutate) {
        item.classList.add('fixd_comment_wrap');
        const is_comment = !!item.getElementsByClassName('Comment').length;
        const is_child = !item.getElementsByClassName('top-level').length;
        const is_thread = !!item.getElementsByClassName('threadline').length;
        const is_hidden = !!item.getElementsByClassName('icon-expand').length;

        if (is_comment && !is_child) {
          $(item).addClass('fixd_top-level');
          const $next = $(item).next();
          const next_is_child = $next.length && !$next[0].getElementsByClassName('top-level').length;
          const next_is_thread = $next.length && !!$next[0].getElementsByClassName('threadline').length;

          if (next_is_child && next_is_thread && !is_hidden && !$(item).find('.fixd_collapse').length) {
            const btn_classList = ['fixd_collapse'];

            if (auto_on && !is_mutate) {
              btn_classList.push('fixd_active');
            }

            const $btn = $('<button>', {
              "text": "children",
              "class": btn_classList.join(' ')
            });

            let $target = $(item).find('button:last');

            if (!$target.length) {
              $target = $(item).find('a:last');
            }

            $btn.insertAfter($target);
          }
        }
        if (auto_on && is_child && !is_mutate && !is_hidden) {
          item.classList.add('fixd_hidden');
        }
      };

      const toggle_visibility = function (clicked) {
        let wrap = $(clicked).parents('.fixd_comment_wrap')[0];
        let is_active = $(clicked).hasClass('fixd_active');

        const check_next = function ($next) {
          const next_is_child = !$next[0].getElementsByClassName('top-level').length;
          const next_is_thread = !!$next[0].getElementsByClassName('threadline').length;
          if (next_is_child && next_is_thread) {
            if (is_active) {
              $next.removeClass('fixd_hidden');
            }
            else {
              $next.addClass('fixd_hidden');
            }
            if ($next.next().length) {
              check_next($next.next());
            }
          }
        };

        check_next($(wrap).next());

        if (is_active) {
          $(clicked).removeClass('fixd_active');
        } else {
          $(clicked).addClass('fixd_active');
        }
      };

      const handle_click = function (ev) {
        if ($(ev.target).hasClass('fixd_collapse')) {
          ev.stopImmediatePropagation();
          toggle_visibility(ev.target);
        }
        else if ($(ev.target).hasClass('fixd_collapse_all')) {
          ev.stopImmediatePropagation();
          if ($(ev.target).hasClass('fixd_active')) {
            $('.fixd_collapse.fixd_active').click();
          }
          else {
            $('.fixd_collapse:not(.fixd_active)').click();
          }
          if ($('.fixd_collapse:not(.fixd_active)').length) {
            $(ev.target).removeClass('fixd_active');
          }
          else {
            $(ev.target).addClass('fixd_active');
          }
        }
      };

      if (feature.setting.enabled) {
        init(document, false);
        $(document).on('click', handle_click);
        Lb_Obs.extend((self, node) => {
          init(node, true);
        });
        Lb_Subtree_Obs.extend((self, node) => {
          init(node, true);
        });
        Comment_Obs.extend((self, node, mutation) => {
          init_comment(mutation.previousSibling, true);
        });
      }
      return feature;
    })();
    FT.menu_hover = (function () {
      var feature = new Feature({
        id: "menu_hover",
        label: "Hover to open menus",
        enabled: false
      });
      feature.add_option({
        id: 'menus',
        label: "Choose menus",
        enabled: true,
        type: 'checkbox',
        choices: {
          1: ['sortpicker', 'Sort Posts', '#ListingSort--SortPicker'],
          2: ['commentsort', 'Comment Sort Picker', '#CommentSort--SortPicker'],
          3: ['user', 'User dropdown', '#USER_DROPDOWN_ID'],
          4: ['headermoderate', 'Moderate (header)', '#Header--Moderation']
        },
        value: ['1', '2', '3', '4']
      });
      feature.add_option({
        id: 'delay',
        label: "Delay",
        requires: "menus",
        type: 'radio',
        choices: {
          1: ['short', 'Short', 200],
          2: ['medium', 'Medium', 400],
          3: ['long', 'Long', 700]
        },
        value: ['2']
      });
      const menus_val = feature.options.menus.value;
      const delay_uid = feature.options.delay.value[0];
      const delay_open = feature.options.delay.choices[delay_uid][2] || 400;

      if (feature.setting.enabled && feature.options.menus.enabled) {
        const init = function () {
          for (let i = 0; i < menus_val.length; i++) {
            const uid = menus_val[i];
            if (uid !== null) {
              add_menu_listener(feature.options.menus.choices[uid]);
            }
          }
        };
        const add_menu_listener = function (menu) {
          let commit_timeout;
          const name = menu[0];
          let selector = menu[2];
          if (name === 'sortpicker') {
            selector = $(selector).parent()[0];
          }
          $(selector).on('mouseenter', function (ev) {
            commit_timeout = window.setTimeout(() => {
              ev.currentTarget.click();
            }, delay_open);
          });
          $(selector).on('mouseleave', function (ev) {
            window.clearTimeout(commit_timeout);
          });
        };
        init();
        if (menus_val.includes('2')) {
          Lb_Obs.extend((self, mutation) => {
            add_menu_listener(feature.options.menus.choices[2]);
          });
          Lb_Subtree_Obs.extend((self, mutation) => {
            add_menu_listener(feature.options.menus.choices[2]);
          });
        }
      }
      return feature;
    })();
    FT.remindme = (function () {
      const feature = new Feature({
        id: "remindme",
        label: "Remind Me",
        enabled: false,
        hidden: true
      });
      return feature;
    })();
    FT.debug = (function () {
      var feature = new Feature({
        id: "debug",
        label: "Debug Fixdit",
        enabled: false
      });
      const init = (enabled) => {
        if (enabled) {
          $('#fixd_indicators').show();
          document.body.classList.add('fixd_debug');
        }
        else {
          $('#fixd_indicators').hide();
          document.body.classList.remove('fixd_debug');
        }
      };
      feature.toggle = init;
      init(feature.setting.enabled);
      return feature;
    })();

    $('body').append('<div id="fixd_launch" data-click-id="fixd_launcher"></div>');
  });
})(window.jQuery.noConflict(true));

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