Improve Vue dropdown filter results on New Project page

app/assets/javascripts/pages/projects/new/components/new_project_url_select.vue

@@ -4,6 +4,7 @@ import {
   GlButtonGroup,
   GlDropdown,
   GlDropdownItem,
+  GlDropdownText,
   GlDropdownSectionHeader,
   GlLoadingIcon,
   GlSearchBoxByType,
@@ -20,6 +21,7 @@ export default {
     GlButtonGroup,
     GlDropdown,
     GlDropdownItem,
+    GlDropdownText,
     GlDropdownSectionHeader,
     GlLoadingIcon,
     GlSearchBoxByType,
@@ -57,8 +59,20 @@ export default {
     userNamespace() {
       return this.currentUser.namespace || {};
     },
+    hasGroupMatches() {
+      return this.userGroups.length;
+    },
+    hasNamespaceMatches() {
+      return this.userNamespace.fullPath?.toLowerCase().includes(this.search.toLowerCase());
+    },
+    hasNoMatches() {
+      return !this.hasGroupMatches && !this.hasNamespaceMatches;
+    },
   },
   methods: {
+    focusInput() {
+      this.$refs.search.focusInput();
+    },
     handleClick({ id, fullPath }) {
       this.selectedNamespace = {
         id: getIdFromGraphQLId(id),
@@ -78,18 +92,24 @@ export default {
       toggle-class="gl-rounded-top-right-base! gl-rounded-bottom-right-base!"
       data-qa-selector="select_namespace_dropdown"
       @show="track('activate_form_input', { label: trackLabel, property: 'project_path' })"
+      @shown="focusInput"
     >
-      <gl-search-box-by-type v-model.trim="search" />
+      <gl-search-box-by-type ref="search" v-model.trim="search" />
       <gl-loading-icon v-if="$apollo.queries.currentUser.loading" />
       <template v-else>
-        <gl-dropdown-section-header>{{ __('Groups') }}</gl-dropdown-section-header>
-        <gl-dropdown-item v-for="group of userGroups" :key="group.id" @click="handleClick(group)">
-          {{ group.fullPath }}
-        </gl-dropdown-item>
-        <gl-dropdown-section-header>{{ __('Users') }}</gl-dropdown-section-header>
-        <gl-dropdown-item @click="handleClick(userNamespace)">
-          {{ userNamespace.fullPath }}
-        </gl-dropdown-item>
+        <template v-if="hasGroupMatches">
+          <gl-dropdown-section-header>{{ __('Groups') }}</gl-dropdown-section-header>
+          <gl-dropdown-item v-for="group of userGroups" :key="group.id" @click="handleClick(group)">
+            {{ group.fullPath }}
+          </gl-dropdown-item>
+        </template>
+        <template v-if="hasNamespaceMatches">
+          <gl-dropdown-section-header>{{ __('Users') }}</gl-dropdown-section-header>
+          <gl-dropdown-item @click="handleClick(userNamespace)">
+            {{ userNamespace.fullPath }}
+          </gl-dropdown-item>
+        </template>
+        <gl-dropdown-text v-if="hasNoMatches">{{ __('No matches found') }}</gl-dropdown-text>
       </template>
     </gl-dropdown>
 

spec/frontend/pages/projects/new/components/new_project_url_select_spec.js

-import { GlButton, GlDropdown, GlDropdownItem, GlDropdownSectionHeader } from '@gitlab/ui';
+import {
+  GlButton,
+  GlDropdown,
+  GlDropdownItem,
+  GlDropdownSectionHeader,
+  GlSearchBoxByType,
+} from '@gitlab/ui';
 import { createLocalVue, mount, shallowMount } from '@vue/test-utils';
 import VueApollo from 'vue-apollo';
 import createMockApollo from 'helpers/mock_apollo_helper';
@@ -34,9 +40,6 @@ describe('NewProjectUrlSelect component', () => {
   const localVue = createLocalVue();
   localVue.use(VueApollo);
 
-  const requestHandlers = [[searchQuery, jest.fn().mockResolvedValue({ data })]];
-  const apolloProvider = createMockApollo(requestHandlers);
-
   const provide = {
     namespaceFullPath: 'h5bp',
     namespaceId: '28',
@@ -44,11 +47,25 @@ describe('NewProjectUrlSelect component', () => {
     trackLabel: 'blank_project',
   };
 
-  const mountComponent = ({ mountFn = shallowMount } = {}) =>
-    mountFn(NewProjectUrlSelect, { localVue, apolloProvider, provide });
+  const mountComponent = ({ search = '', queryResponse = data, mountFn = shallowMount } = {}) => {
+    const requestHandlers = [[searchQuery, jest.fn().mockResolvedValue({ data: queryResponse })]];
+    const apolloProvider = createMockApollo(requestHandlers);
+
+    return mountFn(NewProjectUrlSelect, {
+      localVue,
+      apolloProvider,
+      provide,
+      data() {
+        return {
+          search,
+        };
+      },
+    });
+  };
 
   const findButtonLabel = () => wrapper.findComponent(GlButton);
   const findDropdown = () => wrapper.findComponent(GlDropdown);
+  const findInput = () => wrapper.findComponent(GlSearchBoxByType);
   const findHiddenInput = () => wrapper.find('input');
 
   afterEach(() => {
@@ -74,6 +91,19 @@ describe('NewProjectUrlSelect component', () => {
     expect(findHiddenInput().attributes('value')).toBe(provide.namespaceId);
   });
 
+  it('focuses on the input when the dropdown is opened', async () => {
+    wrapper = mountComponent({ mountFn: mount });
+
+    jest.runOnlyPendingTimers();
+    await wrapper.vm.$nextTick();
+
+    const spy = jest.spyOn(findInput().vm, 'focusInput');
+
+    findDropdown().vm.$emit('shown');
+
+    expect(spy).toHaveBeenCalledTimes(1);
+  });
+
   it('renders expected dropdown items', async () => {
     wrapper = mountComponent({ mountFn: mount });
 
@@ -89,6 +119,27 @@ describe('NewProjectUrlSelect component', () => {
     expect(listItems.at(4).text()).toBe(data.currentUser.namespace.fullPath);
   });
 
+  it('renders `No matches found` when there are no matching dropdown items', async () => {
+    const queryResponse = {
+      currentUser: {
+        groups: {
+          nodes: [],
+        },
+        namespace: {
+          id: 'gid://gitlab/Namespace/1',
+          fullPath: 'root',
+        },
+      },
+    };
+
+    wrapper = mountComponent({ search: 'no matches', queryResponse, mountFn: mount });
+
+    jest.runOnlyPendingTimers();
+    await wrapper.vm.$nextTick();
+
+    expect(wrapper.find('li').text()).toBe('No matches found');
+  });
+
   it('updates hidden input with selected namespace', async () => {
     wrapper = mountComponent();