Make contextual sidebar collapsible

app/assets/javascripts/fly_out_nav.js

@@ -23,6 +23,7 @@ export const showSubLevelItems = (el) => {
   const top = calculateTop(boundingRect, subItems.offsetHeight);
   const isAbove = top < boundingRect.top;
 
+  subItems.classList.add('fly-out-list');
   subItems.style.transform = `translate3d(0, ${Math.floor(top)}px, 0)`;
 
   if (isAbove) {

app/assets/javascripts/new_sidebar.js

+import Cookies from 'js-cookie';
+import _ from 'underscore';
+/* global bp */
+import './breakpoints';
+
 export default class NewNavSidebar {
   constructor() {
     this.initDomElements();
+    this.render();
   }
 
   initDomElements() {
+    this.$page = $('.page-with-sidebar');
     this.$sidebar = $('.nav-sidebar');
     this.$overlay = $('.mobile-overlay');
     this.$openSidebar = $('.toggle-mobile-nav');
     this.$closeSidebar = $('.close-nav-button');
+    this.$sidebarToggle = $('.js-toggle-sidebar');
   }
 
   bindEvents() {
     this.$openSidebar.on('click', () => this.toggleSidebarNav(true));
     this.$closeSidebar.on('click', () => this.toggleSidebarNav(false));
     this.$overlay.on('click', () => this.toggleSidebarNav(false));
+    this.$sidebarToggle.on('click', () => {
+      const value = !this.$sidebar.hasClass('sidebar-icons-only');
+      this.toggleCollapsedSidebar(value);
+    });
+
+    $(window).on('resize', () => _.debounce(this.render(), 100));
+  }
+
+  static setCollapsedCookie(value) {
+    if (bp.getBreakpointSize() !== 'lg') {
+      return;
+    }
+    Cookies.set('sidebar_collapsed', value, { expires: 365 * 10 });
   }
 
   toggleSidebarNav(show) {
     this.$sidebar.toggleClass('nav-sidebar-expanded', show);
     this.$overlay.toggleClass('mobile-nav-open', show);
+    this.$sidebar.removeClass('sidebar-icons-only');
+  }
+
+  toggleCollapsedSidebar(collapsed) {
+    this.$sidebar.toggleClass('sidebar-icons-only', collapsed);
+    this.$page.toggleClass('page-with-new-sidebar', !collapsed);
+    this.$page.toggleClass('page-with-icon-sidebar', collapsed);
+    NewNavSidebar.setCollapsedCookie(collapsed);
+  }
+
+  render() {
+    const breakpoint = bp.getBreakpointSize();
+
+    if (breakpoint === 'sm' || breakpoint === 'md') {
+      this.toggleCollapsedSidebar(true);
+    } else if (breakpoint === 'lg') {
+      const collapse = Cookies.get('sidebar_collapsed') === 'true';
+      this.toggleCollapsedSidebar(collapse);
+    }
   }
 }

app/assets/stylesheets/new_sidebar.scss

@@ -12,9 +12,12 @@ $hover-background: $indigo-700;
 $hover-color: $white-light;
 $inactive-color: $gl-text-color-secondary;
 $new-sidebar-width: 220px;
+$new-sidebar-collapsed-width: 50px;
 
 .page-with-new-sidebar {
-  @media (min-width: $screen-sm-min) {
+  padding-left: $new-sidebar-collapsed-width;
+
+  @media (min-width: $screen-lg-min) {
     padding-left: $new-sidebar-width;
   }
 
@@ -29,6 +32,12 @@ $new-sidebar-width: 220px;
   }
 }
 
+.page-with-icon-sidebar {
+  @media (min-width: $screen-sm-min) {
+    padding-left: $new-sidebar-collapsed-width;
+  }
+}
+
 .context-header {
   position: relative;
 
@@ -125,6 +134,20 @@ $new-sidebar-width: 220px;
   background-color: $gray-normal;
   box-shadow: inset -2px 0 0 $border-color;
 
+  // .expand-full-sidebar-button {
+  //   display: none;
+  // }
+
+  &.sidebar-icons-only {
+    width: $new-sidebar-collapsed-width;
+
+    .nav-item-name,
+    .badge,
+    .project-title {
+      display: none;
+    }
+  }
+
   &.nav-sidebar-expanded {
     left: 0;
   }
@@ -219,6 +242,8 @@ $new-sidebar-width: 220px;
 }
 
 .sidebar-top-level-items {
+  margin-bottom: 60px;
+
   > li {
     > a {
       @media (min-width: $screen-sm-min) {
@@ -240,7 +265,7 @@ $new-sidebar-width: 220px;
         @media (min-width: $screen-sm-min) {
           position: fixed;
           top: 0;
-          left: 220px;
+          left: $new-sidebar-width;
           width: 150px;
           margin-top: -1px;
           padding: 8px 1px;
@@ -326,6 +351,85 @@ $new-sidebar-width: 220px;
   }
 }
 
+
+// Collapsed nav
+
+.toggle-sidebar-button {
+  width: $new-sidebar-width - 2px;
+  position: fixed;
+  bottom: 0;
+  padding: 16px;
+  background-color: $gray-normal;
+  border-top: 2px solid $border-color;
+  color: $gl-text-color-secondary;
+  display: flex;
+  align-items: center;
+
+  @media (max-width: $screen-xs-max) {
+    display: none;
+  }
+
+  i {
+    font-size: 20px;
+    margin-right: 8px;
+  }
+
+  .fa-angle-double-right {
+    display: none;
+  }
+
+  &:hover {
+    background-color: $border-color;
+    color: $gl-text-color;
+  }
+}
+
+.sidebar-icons-only {
+  .context-header {
+    height: 60px;
+
+    a {
+      padding: 10px 4px;
+    }
+  }
+
+  li a {
+    padding: 12px 15px;
+  }
+
+  .sidebar-top-level-items > li {
+    &.active a {
+      padding-left: 12px;
+    }
+
+    .sidebar-sub-level-items {
+      @media (min-width: $screen-sm-min) {
+        left: $new-sidebar-collapsed-width;
+      }
+
+      &:not(.flyout-list) {
+        display: none;
+      }
+    }
+  }
+
+  .toggle-sidebar-button {
+    width: $new-sidebar-collapsed-width - 2px;
+
+    .collapse-text,
+    .fa-angle-double-left {
+      display: none;
+    }
+
+    .fa-angle-double-right {
+      display: block;
+    }
+  }
+}
+
+
+// Mobile nav
+
 .toggle-mobile-nav {
   display: none;
   background-color: transparent;

app/views/layouts/nav/_new_admin_sidebar.html.haml

@@ -149,3 +149,5 @@
           = custom_icon('settings')
         %span.nav-item-name
           Settings
+
+  = render 'shared/sidebar_toggle_button'

app/views/layouts/nav/_new_group_sidebar.html.haml

@@ -88,3 +88,5 @@
             = link_to group_settings_ci_cd_path(@group), title: 'CI / CD' do
               %span
                 CI / CD
+
+  = render 'shared/sidebar_toggle_button'

app/views/layouts/nav/_new_profile_sidebar.html.haml

@@ -83,3 +83,5 @@
           = custom_icon('authentication_log')
         %span.nav-item-name
           Authentication log
+
+  = render 'shared/sidebar_toggle_button'

app/views/layouts/nav/_new_project_sidebar.html.haml

@@ -222,6 +222,8 @@
           %span
             Members
 
+    = render 'shared/sidebar_toggle_button'
+
     -# Shortcut to Project > Activity
     %li.hidden
       = link_to activity_project_path(@project), title: 'Activity', class: 'shortcuts-project-activity' do

app/views/shared/_sidebar_toggle_button.html.haml

+%a.toggle-sidebar-button.js-toggle-sidebar{ role: "button", type: "button", title: "Toggle sidebar" }
+  = icon('angle-double-left')
+  = icon('angle-double-right')
+  %span.collapse-text Collapse sidebar