Cache recent projects for group-level new resource creation.group-new-issue

9 files changed, 253 insertions, 18 deletions

diff --git a/app/assets/javascripts/project_select.js b/app/assets/javascripts/project_select.js
index ebcefc819f5..1b4ed6be90a 100644
--- a/app/assets/javascripts/project_select.js
+++ b/app/assets/javascripts/project_select.js
@@ -1,5 +1,6 @@
 /* eslint-disable func-names, space-before-function-paren, wrap-iife, prefer-arrow-callback, no-var, comma-dangle, object-shorthand, one-var, one-var-declaration-per-line, no-else-return, quotes, max-len */
 import Api from './api';
+import ProjectSelectComboButton from './project_select_combo_button';
 
 (function() {
   this.ProjectSelect = (function() {
@@ -58,7 +59,8 @@ import Api from './api';
         if (this.includeGroups) {
           placeholder += " or group";
         }
-        return $(select).select2({
+
+        $(select).select2({
           placeholder: placeholder,
           minimumInputLength: 0,
           query: (function(_this) {
@@ -96,21 +98,18 @@ import Api from './api';
             };
           })(this),
           id: function(project) {
-            return project.web_url;
+            return JSON.stringify({
+              name: project.name,
+              url: project.web_url,
+            });
           },
           text: function(project) {
             return project.name_with_namespace || project.name;
           },
           dropdownCssClass: "ajax-project-dropdown"
         });
-      });
-
-      $('.new-project-item-select-button').on('click', function() {
-        $('.project-item-select', this.parentNode).select2('open');
-      });
 
-      $('.project-item-select').on('click', function() {
-        window.location = `${$(this).val()}/${this.dataset.relativePath}`;
+        return new ProjectSelectComboButton(select);
       });
     }
 
diff --git a/app/assets/javascripts/project_select_combo_button.js b/app/assets/javascripts/project_select_combo_button.js
new file mode 100644
index 00000000000..f799d9d619a
--- /dev/null
+++ b/app/assets/javascripts/project_select_combo_button.js
@@ -0,0 +1,85 @@
+import AccessorUtilities from './lib/utils/accessor';
+
+export default class ProjectSelectComboButton {
+  constructor(select) {
+    this.projectSelectInput = $(select);
+    this.newItemBtn = $('.new-project-item-link');
+    this.newItemBtnBaseText = this.newItemBtn.data('label');
+    this.itemType = this.deriveItemTypeFromLabel();
+    this.groupId = this.projectSelectInput.data('groupId');
+
+    this.bindEvents();
+    this.initLocalStorage();
+  }
+
+  bindEvents() {
+    this.projectSelectInput.siblings('.new-project-item-select-button')
+      .on('click', this.openDropdown);
+
+    this.projectSelectInput.on('change', () => this.selectProject());
+  }
+
+  initLocalStorage() {
+    const localStorageIsSafe = AccessorUtilities.isLocalStorageAccessSafe();
+
+    if (localStorageIsSafe) {
+      const itemTypeKebabed = this.newItemBtnBaseText.toLowerCase().split(' ').join('-');
+
+      this.localStorageKey = ['group', this.groupId, itemTypeKebabed, 'recent-project'].join('-');
+      this.setBtnTextFromLocalStorage();
+    }
+  }
+
+  openDropdown() {
+    $(this).siblings('.project-item-select').select2('open');
+  }
+
+  selectProject() {
+    const selectedProjectData = JSON.parse(this.projectSelectInput.val());
+    const projectUrl = `${selectedProjectData.url}/${this.projectSelectInput.data('relativePath')}`;
+    const projectName = selectedProjectData.name;
+
+    const projectMeta = {
+      url: projectUrl,
+      name: projectName,
+    };
+
+    this.setNewItemBtnAttributes(projectMeta);
+    this.setProjectInLocalStorage(projectMeta);
+  }
+
+  setBtnTextFromLocalStorage() {
+    const cachedProjectData = this.getProjectFromLocalStorage();
+
+    this.setNewItemBtnAttributes(cachedProjectData);
+  }
+
+  setNewItemBtnAttributes(project) {
+    if (project) {
+      this.newItemBtn.attr('href', project.url);
+      this.newItemBtn.text(`${this.newItemBtnBaseText} in ${project.name}`);
+      this.newItemBtn.enable();
+    } else {
+      this.newItemBtn.text(`Select project to create ${this.itemType}`);
+      this.newItemBtn.disable();
+    }
+  }
+
+  deriveItemTypeFromLabel() {
+    // label is either 'New issue' or 'New merge request'
+    return this.newItemBtnBaseText.split(' ').slice(1).join(' ');
+  }
+
+  getProjectFromLocalStorage() {
+    const projectString = localStorage.getItem(this.localStorageKey);
+
+    return JSON.parse(projectString);
+  }
+
+  setProjectInLocalStorage(projectMeta) {
+    const projectString = JSON.stringify(projectMeta);
+
+    localStorage.setItem(this.localStorageKey, projectString);
+  }
+}
+
diff --git a/app/assets/stylesheets/framework/nav.scss b/app/assets/stylesheets/framework/nav.scss
index 88e7ba117d5..391eb86aaa5 100644
--- a/app/assets/stylesheets/framework/nav.scss
+++ b/app/assets/stylesheets/framework/nav.scss
@@ -251,7 +251,6 @@
 
       // Applies on /dashboard/issues
       .project-item-select-holder {
-        display: block;
         margin: 0;
       }
     }
@@ -283,6 +282,33 @@
   }
 }
 
+.project-item-select-holder.btn-group {
+  display: flex;
+  width: auto;
+  max-width: 350px;
+  float: none;
+  overflow: hidden;
+
+  @media(max-width: $screen-xs-max) {
+    width: 100%;
+    max-width: none;
+  }
+
+  .new-project-item-link {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .new-project-item-select-button {
+    width: 32px;
+  }
+}
+
+.new-project-item-select-button .fa-caret-down {
+  margin-left: 2px;
+}
+
 .layout-nav {
   width: 100%;
   background: $gray-light;
diff --git a/app/views/shared/_new_project_item_select.html.haml b/app/views/shared/_new_project_item_select.html.haml
index b417e83cdb6..96502d7ce93 100644
--- a/app/views/shared/_new_project_item_select.html.haml
+++ b/app/views/shared/_new_project_item_select.html.haml
@@ -1,6 +1,7 @@
 - if any_projects?(@projects)
-  .project-item-select-holder
+  .project-item-select-holder.btn-group.pull-right
+    %a.btn.btn-new.new-project-item-link{ href: '', data: { label: local_assigns[:label] } }
+      = icon('spinner spin')
     = project_select_tag :project_path, class: "project-item-select", data: { include_groups: local_assigns[:include_groups], order_by: 'last_activity_at', relative_path: local_assigns[:path] }, with_feature_enabled: local_assigns[:with_feature_enabled]
-    %a.btn.btn-new.new-project-item-select-button
-      = local_assigns[:label]
+    %button.btn.btn-new.new-project-item-select-button
       = icon('caret-down')
diff --git a/changelogs/unreleased/group-new-issue.yml b/changelogs/unreleased/group-new-issue.yml
new file mode 100644
index 00000000000..5480a44526b
--- /dev/null
+++ b/changelogs/unreleased/group-new-issue.yml
@@ -0,0 +1,4 @@
+---
+title: Cache recent projects for group-level new resource creation.
+merge_request: !13058
+author:
diff --git a/spec/features/dashboard/issues_spec.rb b/spec/features/dashboard/issues_spec.rb
index be6f78ee607..795335aa106 100644
--- a/spec/features/dashboard/issues_spec.rb
+++ b/spec/features/dashboard/issues_spec.rb
@@ -79,12 +79,21 @@ RSpec.describe 'Dashboard Issues' do
       end
     end
 
-    it 'shows the new issue page', :js do
+    it 'shows the new issue page', js: true do
       find('.new-project-item-select-button').trigger('click')
+
       wait_for_requests
-      find('.select2-results li').click
 
-      expect(page).to have_current_path("/#{project.path_with_namespace}/issues/new")
+      project_path = "/#{project.path_with_namespace}"
+      project_json = { name: project.name_with_namespace, url: project_path }.to_json
+
+      # similate selection, and prevent overlap by dropdown menu
+      execute_script("$('.project-item-select').val('#{project_json}').trigger('change');")
+      execute_script("$('#select2-drop-mask').remove();")
+
+      find('.new-project-item-link').trigger('click')
+
+      expect(page).to have_current_path("#{project_path}/issues/new")
 
       page.within('#content-body') do
         expect(page).to have_selector('.issue-form')
diff --git a/spec/features/groups/empty_states_spec.rb b/spec/features/groups/empty_states_spec.rb
index 7f28553c44e..243e8536168 100644
--- a/spec/features/groups/empty_states_spec.rb
+++ b/spec/features/groups/empty_states_spec.rb
@@ -38,7 +38,7 @@ feature 'Groups Merge Requests Empty States' do
 
       it 'should show a new merge request button' do
         within '.empty-state' do
-          expect(page).to have_content('New merge request')
+          expect(page).to have_content('create merge request')
         end
       end
 
@@ -63,7 +63,7 @@ feature 'Groups Merge Requests Empty States' do
 
     it 'should not show a new merge request button' do
       within '.empty-state' do
-        expect(page).not_to have_link('New merge request')
+        expect(page).not_to have_link('create merge request')
       end
     end
   end
diff --git a/spec/javascripts/fixtures/project_select_combo_button.html.haml b/spec/javascripts/fixtures/project_select_combo_button.html.haml
new file mode 100644
index 00000000000..54bc1a59279
--- /dev/null
+++ b/spec/javascripts/fixtures/project_select_combo_button.html.haml
@@ -0,0 +1,6 @@
+.project-item-select-holder
+  %input.project-item-select{ data: { group_id: '12345' , relative_path: 'issues/new' } }
+  %a.new-project-item-link{ data: { label: 'New issue' }, href: ''}
+    %i.fa.fa-spinner.spin
+  %a.new-project-item-select-button
+    %i.fa.fa-caret-down
diff --git a/spec/javascripts/project_select_combo_button_spec.js b/spec/javascripts/project_select_combo_button_spec.js
new file mode 100644
index 00000000000..e10a5a3bef6
--- /dev/null
+++ b/spec/javascripts/project_select_combo_button_spec.js
@@ -0,0 +1,105 @@
+import ProjectSelectComboButton from '~/project_select_combo_button';
+
+const fixturePath = 'static/project_select_combo_button.html.raw';
+
+describe('Project Select Combo Button', function () {
+  preloadFixtures(fixturePath);
+
+  beforeEach(function () {
+    this.defaults = {
+      label: 'Select project to create issue',
+      groupId: 12345,
+      projectMeta: {
+        name: 'My Cool Project',
+        url: 'http://mycoolproject.com',
+      },
+      newProjectMeta: {
+        name: 'My Other Cool Project',
+        url: 'http://myothercoolproject.com',
+      },
+      localStorageKey: 'group-12345-new-issue-recent-project',
+      relativePath: 'issues/new',
+    };
+
+    loadFixtures(fixturePath);
+
+    this.newItemBtn = document.querySelector('.new-project-item-link');
+    this.projectSelectInput = document.querySelector('.project-item-select');
+  });
+
+  describe('on page load when localStorage is empty', function () {
+    beforeEach(function () {
+      this.comboButton = new ProjectSelectComboButton(this.projectSelectInput);
+    });
+
+    it('newItemBtn is disabled', function () {
+      expect(this.newItemBtn.hasAttribute('disabled')).toBe(true);
+      expect(this.newItemBtn.classList.contains('disabled')).toBe(true);
+    });
+
+    it('newItemBtn href is null', function () {
+      expect(this.newItemBtn.getAttribute('href')).toBe('');
+    });
+
+    it('newItemBtn text is the plain default label', function () {
+      expect(this.newItemBtn.textContent).toBe(this.defaults.label);
+    });
+  });
+
+  describe('on page load when localStorage is filled', function () {
+    beforeEach(function () {
+      window.localStorage
+        .setItem(this.defaults.localStorageKey, JSON.stringify(this.defaults.projectMeta));
+      this.comboButton = new ProjectSelectComboButton(this.projectSelectInput);
+    });
+
+    it('newItemBtn is not disabled', function () {
+      expect(this.newItemBtn.hasAttribute('disabled')).toBe(false);
+      expect(this.newItemBtn.classList.contains('disabled')).toBe(false);
+    });
+
+    it('newItemBtn href is correctly set', function () {
+      expect(this.newItemBtn.getAttribute('href')).toBe(this.defaults.projectMeta.url);
+    });
+
+    it('newItemBtn text is the cached label', function () {
+      expect(this.newItemBtn.textContent)
+        .toBe(`New issue in ${this.defaults.projectMeta.name}`);
+    });
+
+    afterEach(function () {
+      window.localStorage.clear();
+    });
+  });
+
+  describe('after selecting a new project', function () {
+    beforeEach(function () {
+      this.comboButton = new ProjectSelectComboButton(this.projectSelectInput);
+
+      // mock the effect of selecting an item from the projects dropdown (select2)
+      $('.project-item-select')
+        .val(JSON.stringify(this.defaults.newProjectMeta))
+        .trigger('change');
+    });
+
+    it('newItemBtn is not disabled', function () {
+      expect(this.newItemBtn.hasAttribute('disabled')).toBe(false);
+      expect(this.newItemBtn.classList.contains('disabled')).toBe(false);
+    });
+
+    it('newItemBtn href is correctly set', function () {
+      expect(this.newItemBtn.getAttribute('href'))
+        .toBe('http://myothercoolproject.com/issues/new');
+    });
+
+    it('newItemBtn text is the selected project label', function () {
+      expect(this.newItemBtn.textContent)
+        .toBe(`New issue in ${this.defaults.newProjectMeta.name}`);
+    });
+
+    afterEach(function () {
+      window.localStorage.clear();
+    });
+  });
+});
+