Refactor UserTabs to ES6.

app/assets/javascripts/user.js.es6

@@ -14,7 +14,7 @@
     }
     initTabs() {
-      return new UserTabs({
+      return new global.UserTabs({
         parentEl: '.user-profile',
         action: this.opts.action
       });

app/assets/javascripts/user_tabs.js.es6

+/*
+UserTabs
+
+Handles persisting and restoring the current tab selection and lazily-loading
+content on the Users#show page.
+
+### Example Markup
+
+   <ul class="nav-links">
+     <li class="activity-tab active">
+       <a data-action="activity" data-target="#activity" data-toggle="tab" href="/u/username">
+         Activity
+       </a>
+     </li>
+     <li class="groups-tab">
+       <a data-action="groups" data-target="#groups" data-toggle="tab" href="/u/username/groups">
+         Groups
+       </a>
+     </li>
+     <li class="contributed-tab">
+       <a data-action="contributed" data-target="#contributed" data-toggle="tab" href="/u/username/contributed">
+         Contributed projects
+       </a>
+     </li>
+     <li class="projects-tab">
+       <a data-action="projects" data-target="#projects" data-toggle="tab" href="/u/username/projects">
+         Personal projects
+       </a>
+     </li>
+    <li class="snippets-tab">
+       <a data-action="snippets" data-target="#snippets" data-toggle="tab" href="/u/username/snippets">
+       </a>
+     </li>
+   </ul>
+
+   <div class="tab-content">
+     <div class="tab-pane" id="activity">
+       Activity Content
+     </div>
+     <div class="tab-pane" id="groups">
+       Groups Content
+     </div>
+     <div class="tab-pane" id="contributed">
+       Contributed projects content
+     </div>
+     <div class="tab-pane" id="projects">
+      Projects content
+     </div>
+     <div class="tab-pane" id="snippets">
+       Snippets content
+     </div>
+  </div>
+
+   <div class="loading-status">
+     <div class="loading">
+      Loading Animation
+     </div>
+   </div>
+*/
+(global => {
+  class UserTabs {
+    constructor (opts) {
+      this.loaded = {};
+      this.defaultAction = opts.defaultAction || 'activity';
+      this.action = opts.action || 'activity';
+      this.$parentEl = $(opts.parentEl) || $(document);
+      this._location = window.location;
+      this.$parentEl.find('.nav-links a')
+        .each((i, navLink) => {
+          this.loaded[$(navLink).attr('data-action')] = false;
+        });
+      this.actions = Object.keys(this.loaded);
+      this.bindEvents();
+
+      if (this.action === 'show') {
+        this.action = this.defaultAction;
+      }
+
+      this.activateTab(this.action);
+    }
+
+    bindEvents() {
+      return this.$parentEl.off('shown.bs.tab', '.nav-links a[data-toggle="tab"]')
+        .on('shown.bs.tab', '.nav-links a[data-toggle="tab"]', (event) => this.tabShown(event));
+    }
+
+    tabShown(event) {
+      const $target = $(event.target);
+      const action = $target.data('action');
+      const source = $target.attr('href');
+      this.setTab(source, action);
+      return this.setCurrentAction(action);
+    }
+
+    activateTab(action) {
+      return this.$parentEl.find(".nav-links .js-" + action + "-tab a")
+        .tab('show');
+    }
+
+    setTab(source, action) {
+      if (this.loaded[action]) {
+        return;
+      }
+      if (action === 'activity') {
+        this.loadActivities(source);
+      }
+      if (action === 'groups' || action === 'contributed' || action === 'projects' || action === 'snippets') {
+        return this.loadTab(source, action);
+      }
+    }
+
+    loadTab(source, action) {
+      return $.ajax({
+        beforeSend: () => this.toggleLoading(true),
+        complete: () => this.toggleLoading(false),
+        dataType: 'json',
+        type: 'GET',
+        url: source + ".json",
+        success: (data) => {
+          const tabSelector = 'div#' + action;
+          this.$parentEl.find(tabSelector).html(data.html);
+          this.loaded[action] = true;
+          return gl.utils.localTimeAgo($('.js-timeago', tabSelector));
+        }
+      });
+    }
+
+    loadActivities(source) {
+      if (this.loaded['activity']) {
+        return;
+      }
+      const $calendarWrap = this.$parentEl.find('.user-calendar');
+      $calendarWrap.load($calendarWrap.data('href'));
+      new Activities();
+      return this.loaded['activity'] = true;
+    }
+
+    toggleLoading(status) {
+      return this.$parentEl.find('.loading-status .loading')
+        .toggle(status);
+    }
+
+    setCurrentAction(action) {
+      const regExp = new RegExp('\/(' + this.actions.join('|') + ')(\.html)?\/?$');
+      let new_state = this._location.pathname;
+      new_state = new_state.replace(/\/+$/, "");
+      new_state = new_state.replace(regExp, '');
+      if (action !== this.defaultAction) {
+        new_state += "/" + action;
+      }
+      new_state += this._location.search + this._location.hash;
+      history.replaceState({
+        turbolinks: true,
+        url: new_state
+      }, document.title, new_state);
+      return new_state;
+    };
+  }
+  global.UserTabs = UserTabs;
+})(window.gl || (window.gl = {}));