Merge branch 'sidebar-fly-out-sub-nav' into 'master'

Fly-out dropdown menu in new sidebar

Closes #34026

See merge request !12938

5 files changed, 335 insertions, 38 deletions

diff --git a/app/assets/javascripts/fly_out_nav.js b/app/assets/javascripts/fly_out_nav.js
new file mode 100644
index 00000000000..8e9a97fe207
--- /dev/null
+++ b/app/assets/javascripts/fly_out_nav.js
@@ -0,0 +1,51 @@
+/* global bp */
+import './breakpoints';
+
+export const canShowSubItems = () => bp.getBreakpointSize() === 'md' || bp.getBreakpointSize() === 'lg';
+
+export const calculateTop = (boundingRect, outerHeight) => {
+  const windowHeight = window.innerHeight;
+  const bottomOverflow = windowHeight - (boundingRect.top + outerHeight);
+
+  return bottomOverflow < 0 ? (boundingRect.top - outerHeight) + boundingRect.height :
+    boundingRect.top;
+};
+
+export const showSubLevelItems = (el) => {
+  const subItems = el.querySelector('.sidebar-sub-level-items');
+
+  if (!subItems || !canShowSubItems()) return;
+
+  subItems.style.display = 'block';
+  el.classList.add('is-over');
+
+  const boundingRect = el.getBoundingClientRect();
+  const top = calculateTop(boundingRect, subItems.offsetHeight);
+  const isAbove = top < boundingRect.top;
+
+  subItems.style.transform = `translate3d(0, ${Math.floor(top)}px, 0)`;
+
+  if (isAbove) {
+    subItems.classList.add('is-above');
+  }
+};
+
+export const hideSubLevelItems = (el) => {
+  const subItems = el.querySelector('.sidebar-sub-level-items');
+
+  if (!subItems || !canShowSubItems()) return;
+
+  el.classList.remove('is-over');
+  subItems.style.display = 'none';
+  subItems.classList.remove('is-above');
+};
+
+export default () => {
+  const items = [...document.querySelectorAll('.sidebar-top-level-items > li:not(.active)')]
+    .filter(el => el.querySelector('.sidebar-sub-level-items'));
+
+  items.forEach((el) => {
+    el.addEventListener('mouseenter', e => showSubLevelItems(e.currentTarget));
+    el.addEventListener('mouseleave', e => hideSubLevelItems(e.currentTarget));
+  });
+};
diff --git a/app/assets/javascripts/layout_nav.js b/app/assets/javascripts/layout_nav.js
index 6186ffe20b3..5c1ba416a03 100644
--- a/app/assets/javascripts/layout_nav.js
+++ b/app/assets/javascripts/layout_nav.js
@@ -2,6 +2,7 @@
 import _ from 'underscore';
 import Cookies from 'js-cookie';
 import NewNavSidebar from './new_sidebar';
+import initFlyOutNav from './fly_out_nav';
 
 (function() {
   var hideEndFade;
@@ -58,6 +59,8 @@ import NewNavSidebar from './new_sidebar';
     if (Cookies.get('new_nav') === 'true') {
       const newNavSidebar = new NewNavSidebar();
       newNavSidebar.bindEvents();
+
+      initFlyOutNav();
     }
 
     $(window).on('scroll', _.throttle(applyScrollNavClass, 100));
diff --git a/app/assets/stylesheets/new_sidebar.scss b/app/assets/stylesheets/new_sidebar.scss
index 2ed6dfbe7c2..3d202183c82 100644
--- a/app/assets/stylesheets/new_sidebar.scss
+++ b/app/assets/stylesheets/new_sidebar.scss
@@ -220,6 +220,82 @@ $new-sidebar-width: 220px;
 
 .sidebar-top-level-items {
   > li {
+    > a {
+      @media (min-width: $screen-sm-min) {
+        margin-right: 2px;
+      }
+
+      &:hover {
+        color: $gl-text-color;
+      }
+    }
+
+    &:not(.active) {
+      > a {
+        margin-left: 1px;
+        margin-right: 3px;
+      }
+
+      .sidebar-sub-level-items {
+        @media (min-width: $screen-sm-min) {
+          position: fixed;
+          top: 0;
+          left: 220px;
+          width: 150px;
+          margin-top: -1px;
+          padding: 8px 1px;
+          background-color: $white-light;
+          box-shadow: 2px 1px 3px $dropdown-shadow-color;
+          border: 1px solid $gray-darker;
+          border-left: 0;
+          border-radius: 0 3px 3px 0;
+
+          &::before {
+            content: "";
+            position: absolute;
+            top: -30px;
+            bottom: -30px;
+            left: 0;
+            right: -30px;
+            z-index: -1;
+          }
+
+          &::after {
+            content: "";
+            position: absolute;
+            top: 44px;
+            left: -30px;
+            right: 35px;
+            bottom: 0;
+            height: 100%;
+            max-height: 150px;
+            z-index: -1;
+            transform: skew(33deg);
+          }
+
+          &.is-above {
+            margin-top: 1px;
+
+            &::after {
+              top: auto;
+              bottom: 44px;
+              transform: skew(-30deg);
+            }
+          }
+
+          a {
+            padding: 8px 16px;
+            color: $gl-text-color;
+
+            &:hover,
+            &:focus {
+              background-color: $gray-darker;
+            }
+          }
+        }
+      }
+    }
+
     .badge {
       background-color: $inactive-badge-background;
       color: $inactive-color;
@@ -228,6 +304,10 @@ $new-sidebar-width: 220px;
     &.active {
       background: $active-background;
 
+      > a {
+        margin-left: 4px;
+      }
+
       .badge {
         color: $active-color;
         font-weight: 600;
@@ -238,18 +318,10 @@ $new-sidebar-width: 220px;
       }
     }
 
-    > a:hover {
-      background-color: $hover-background;
-      color: $hover-color;
-
-      svg {
-        fill: $hover-color;
-      }
-
-      .badge {
-        background-color: $indigo-500;
-        color: $hover-color;
-      }
+    &:not(.active):hover > a,
+    > a:hover,
+    &.is-over > a {
+      background-color: $white-light;
     }
   }
 }
diff --git a/app/views/layouts/nav/_new_project_sidebar.html.haml b/app/views/layouts/nav/_new_project_sidebar.html.haml
index 1a2c9325583..9f1cb248c4e 100644
--- a/app/views/layouts/nav/_new_project_sidebar.html.haml
+++ b/app/views/layouts/nav/_new_project_sidebar.html.haml
@@ -91,34 +91,25 @@
             %span.badge.count.issue_counter= number_with_delimiter(IssuesFinder.new(current_user, project_id: @project.id).execute.opened.count)
 
         %ul.sidebar-sub-level-items
-          - if project_nav_tab?(:issues) && !current_controller?(:merge_requests)
-            = nav_link(controller: :issues) do
-              = link_to project_issues_path(@project), title: 'Issues' do
-                %span
-                  List
-
-            = nav_link(controller: :boards) do
-              = link_to project_boards_path(@project), title: 'Board' do
-                %span
-                  Board
+          = nav_link(controller: :issues) do
+            = link_to project_issues_path(@project), title: 'Issues' do
+              %span
+                List
 
-          - if project_nav_tab?(:merge_requests) && current_controller?(:merge_requests)
-            = nav_link(controller: :merge_requests) do
-              = link_to project_merge_requests_path(@project), title: 'Merge Requests' do
-                %span
-                  Merge Requests
+          = nav_link(controller: :boards) do
+            = link_to project_boards_path(@project), title: 'Board' do
+              %span
+                Board
 
-          - if project_nav_tab? :labels
-            = nav_link(controller: :labels) do
-              = link_to project_labels_path(@project), title: 'Labels' do
-                %span
-                  Labels
+          = nav_link(controller: :labels) do
+            = link_to project_labels_path(@project), title: 'Labels' do
+              %span
+                Labels
 
-          - if project_nav_tab? :milestones
-            = nav_link(controller: :milestones) do
-              = link_to project_milestones_path(@project), title: 'Milestones' do
-                %span
-                  Milestones
+          = nav_link(controller: :milestones) do
+            = link_to project_milestones_path(@project), title: 'Milestones' do
+              %span
+                Milestones
 
     - if project_nav_tab? :merge_requests
       = nav_link(controller: @project.issues_enabled? ? :merge_requests : [:merge_requests, :labels, :milestones]) do
@@ -195,7 +186,7 @@
         %ul.sidebar-sub-level-items
           - can_edit = can?(current_user, :admin_project, @project)
           - if can_edit
-            = nav_link(controller: :projects) do
+            = nav_link(path: %w[projects#edit]) do
               = link_to edit_project_path(@project), title: 'General' do
                 %span
                   General
diff --git a/spec/javascripts/fly_out_nav_spec.js b/spec/javascripts/fly_out_nav_spec.js
new file mode 100644
index 00000000000..ab74f3e00ec
--- /dev/null
+++ b/spec/javascripts/fly_out_nav_spec.js
@@ -0,0 +1,180 @@
+/* global bp */
+import {
+  calculateTop,
+  hideSubLevelItems,
+  showSubLevelItems,
+  canShowSubItems,
+} from '~/fly_out_nav';
+
+describe('Fly out sidebar navigation', () => {
+  let el;
+  let breakpointSize = 'lg';
+
+  beforeEach(() => {
+    el = document.createElement('div');
+    el.style.position = 'relative';
+    document.body.appendChild(el);
+
+    spyOn(bp, 'getBreakpointSize').and.callFake(() => breakpointSize);
+  });
+
+  afterEach(() => {
+    el.remove();
+    breakpointSize = 'lg';
+  });
+
+  describe('calculateTop', () => {
+    it('returns boundingRect top', () => {
+      const boundingRect = {
+        top: 100,
+        height: 100,
+      };
+
+      expect(
+        calculateTop(boundingRect, 100),
+      ).toBe(100);
+    });
+
+    it('returns boundingRect - bottomOverflow', () => {
+      const boundingRect = {
+        top: window.innerHeight - 50,
+        height: 100,
+      };
+
+      expect(
+        calculateTop(boundingRect, 100),
+      ).toBe(window.innerHeight - 50);
+    });
+  });
+
+  describe('hideSubLevelItems', () => {
+    beforeEach(() => {
+      el.innerHTML = '<div class="sidebar-sub-level-items"></div>';
+    });
+
+    it('hides subitems', () => {
+      hideSubLevelItems(el);
+
+      expect(
+        el.querySelector('.sidebar-sub-level-items').style.display,
+      ).toBe('none');
+    });
+
+    it('does not hude subitems on mobile', () => {
+      breakpointSize = 'sm';
+
+      hideSubLevelItems(el);
+
+      expect(
+        el.querySelector('.sidebar-sub-level-items').style.display,
+      ).not.toBe('none');
+    });
+
+    it('removes is-over class', () => {
+      spyOn(el.classList, 'remove');
+
+      hideSubLevelItems(el);
+
+      expect(
+        el.classList.remove,
+      ).toHaveBeenCalledWith('is-over');
+    });
+
+    it('removes is-above class from sub-items', () => {
+      const subItems = el.querySelector('.sidebar-sub-level-items');
+
+      spyOn(subItems.classList, 'remove');
+
+      hideSubLevelItems(el);
+
+      expect(
+        subItems.classList.remove,
+      ).toHaveBeenCalledWith('is-above');
+    });
+
+    it('does nothing if el has no sub-items', () => {
+      el.innerHTML = '';
+
+      spyOn(el.classList, 'remove');
+
+      hideSubLevelItems(el);
+
+      expect(
+        el.classList.remove,
+      ).not.toHaveBeenCalledWith();
+    });
+  });
+
+  describe('showSubLevelItems', () => {
+    beforeEach(() => {
+      el.innerHTML = '<div class="sidebar-sub-level-items" style="position: absolute;"></div>';
+    });
+
+    it('adds is-over class to el', () => {
+      spyOn(el.classList, 'add');
+
+      showSubLevelItems(el);
+
+      expect(
+        el.classList.add,
+      ).toHaveBeenCalledWith('is-over');
+    });
+
+    it('does not show sub-items on mobile', () => {
+      breakpointSize = 'sm';
+
+      showSubLevelItems(el);
+
+      expect(
+        el.querySelector('.sidebar-sub-level-items').style.display,
+      ).not.toBe('block');
+    });
+
+    it('does not shows sub-items', () => {
+      showSubLevelItems(el);
+
+      expect(
+        el.querySelector('.sidebar-sub-level-items').style.display,
+      ).toBe('block');
+    });
+
+    it('sets transform of sub-items', () => {
+      const subItems = el.querySelector('.sidebar-sub-level-items');
+      showSubLevelItems(el);
+
+      expect(
+        subItems.style.transform,
+      ).toBe(`translate3d(0px, ${Math.floor(el.getBoundingClientRect().top)}px, 0px)`);
+    });
+
+    it('sets is-above when element is above', () => {
+      const subItems = el.querySelector('.sidebar-sub-level-items');
+      subItems.style.height = `${window.innerHeight + el.offsetHeight}px`;
+      el.style.top = `${window.innerHeight - el.offsetHeight}px`;
+
+      spyOn(subItems.classList, 'add');
+
+      showSubLevelItems(el);
+
+      expect(
+        subItems.classList.add,
+      ).toHaveBeenCalledWith('is-above');
+    });
+  });
+
+  describe('canShowSubItems', () => {
+    it('returns true if on desktop size', () => {
+      expect(
+        canShowSubItems(),
+      ).toBeTruthy();
+    });
+
+    it('returns false if on mobile size', () => {
+      breakpointSize = 'sm';
+
+      expect(
+        canShowSubItems(),
+      ).toBeFalsy();
+    });
+  });
+});