Generalize toggle_buttons.js

Part of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4110

app/assets/javascripts/clusters/clusters_bundle.js

@@ -14,6 +14,7 @@ import {
 import ClustersService from './services/clusters_service';
 import ClustersStore from './stores/clusters_store';
 import applications from './components/applications.vue';
+import setupToggleButtons from '../toggle_buttons';
 
 /**
  * Cluster page has 2 separate parts:
@@ -48,12 +49,9 @@ export default class Clusters {
       installPrometheusEndpoint: installPrometheusPath,
     });
 
-    this.toggle = this.toggle.bind(this);
     this.installApplication = this.installApplication.bind(this);
     this.showToken = this.showToken.bind(this);
 
-    this.toggleButton = document.querySelector('.js-toggle-cluster');
-    this.toggleInput = document.querySelector('.js-toggle-input');
     this.errorContainer = document.querySelector('.js-cluster-error');
     this.successContainer = document.querySelector('.js-cluster-success');
     this.creatingContainer = document.querySelector('.js-cluster-creating');
@@ -63,6 +61,7 @@ export default class Clusters {
     this.tokenField = document.querySelector('.js-cluster-token');
 
     initSettingsPanels();
+    setupToggleButtons(document.querySelector('.js-cluster-enable-toggle-area'));
     this.initApplications();
 
     if (this.store.state.status !== 'created') {
@@ -101,13 +100,11 @@ export default class Clusters {
   }
 
   addListeners() {
-    this.toggleButton.addEventListener('click', this.toggle);
     if (this.showTokenButton) this.showTokenButton.addEventListener('click', this.showToken);
     eventHub.$on('installApplication', this.installApplication);
   }
 
   removeListeners() {
-    this.toggleButton.removeEventListener('click', this.toggle);
     if (this.showTokenButton) this.showTokenButton.removeEventListener('click', this.showToken);
     eventHub.$off('installApplication', this.installApplication);
   }
@@ -151,11 +148,6 @@ export default class Clusters {
     this.updateContainer(prevStatus, this.store.state.status, this.store.state.statusReason);
   }
 
-  toggle() {
-    this.toggleButton.classList.toggle('is-checked');
-    this.toggleInput.setAttribute('value', this.toggleButton.classList.contains('is-checked').toString());
-  }
-
   showToken() {
     const type = this.tokenField.getAttribute('type');
 

app/assets/javascripts/clusters/clusters_index.js

 import Flash from '../flash';
 import { s__ } from '../locale';
+import setupToggleButtons from '../toggle_buttons';
 import ClustersService from './services/clusters_service';
-/**
- * Toggles loading and disabled classes.
- * @param {HTMLElement} button
- */
-const toggleLoadingButton = (button) => {
-  if (button.getAttribute('disabled')) {
-    button.removeAttribute('disabled');
-  } else {
-    button.setAttribute('disabled', true);
-  }
-
-  button.classList.toggle('is-loading');
-};
-
-/**
- * Toggles checked class for the given button
- * @param {HTMLElement} button
- */
-const toggleValue = (button) => {
-  button.classList.toggle('is-checked');
-};
 
-/**
- * Handles toggle buttons in the cluster's table.
- *
- * When the user clicks the toggle button for each cluster, it:
- * - toggles the button
- * - shows a loading and disables button
- * - Makes a put request to the given endpoint
- * Once we receive the response, either:
- * 1) Show updated status in case of successfull response
- * 2) Show initial status in case of failed response
- */
-export default function setClusterTableToggles() {
-  document.querySelectorAll('.js-toggle-cluster-list')
-    .forEach(button => button.addEventListener('click', (e) => {
-      const toggleButton = e.currentTarget;
-      const endpoint = toggleButton.getAttribute('data-endpoint');
-
-      toggleValue(toggleButton);
-      toggleLoadingButton(toggleButton);
-
-      const value = toggleButton.classList.contains('is-checked');
-
-      ClustersService.updateCluster(endpoint, { cluster: { enabled: value } })
-        .then(() => {
-          toggleLoadingButton(toggleButton);
-        })
-        .catch(() => {
-          toggleLoadingButton(toggleButton);
-          toggleValue(toggleButton);
+export default () => {
+  const clusterList = document.querySelector('.js-clusters-list');
+  // The empty state won't have a clusterList
+  if (clusterList) {
+    setupToggleButtons(
+      document.querySelector('.js-clusters-list'),
+      (value, toggle) =>
+        ClustersService.updateCluster(toggle.dataset.endpoint, { cluster: { enabled: value } })
+          .catch((err) => {
             Flash(s__('ClusterIntegration|Something went wrong on our end.'));
-        });
-    }));
-}
+            throw err;
+          }),
+    );
+  }
+};

app/assets/javascripts/toggle_buttons.js

+import $ from 'jquery';
+import Flash from './flash';
+import { __ } from './locale';
+import { convertPermissionToBoolean } from './lib/utils/common_utils';
+
+/*
+ example HAML:
+ ```
+  %button.js-project-feature-toggle.project-feature-toggle{ type: "button",
+    class: "#{'is-checked' if enabled?}",
+    'aria-label': _('Toggle Cluster') }
+    %input{ type: "hidden", class: 'js-project-feature-toggle-input', value: enabled? }
+  ```
+*/
+
+function updatetoggle(toggle, isOn) {
+  toggle.classList.toggle('is-checked', isOn);
+}
+
+function onToggleClicked(toggle, input, clickCallback) {
+  const previousIsOn = convertPermissionToBoolean(input.value);
+
+  // Visually change the toggle and start loading
+  updatetoggle(toggle, !previousIsOn);
+  toggle.setAttribute('disabled', true);
+  toggle.classList.toggle('is-loading', true);
+
+  Promise.resolve(clickCallback(!previousIsOn, toggle))
+    .then(() => {
+      // Actually change the input value
+      input.setAttribute('value', !previousIsOn);
+    })
+    .catch(() => {
+      // Revert the visuals if something goes wrong
+      updatetoggle(toggle, previousIsOn);
+    })
+    .then(() => {
+      // Remove the loading indicator in any case
+      toggle.removeAttribute('disabled');
+      toggle.classList.toggle('is-loading', false);
+
+      $(input).trigger('trigger-change');
+    })
+    .catch(() => {
+      Flash(__('Something went wrong when toggling the button'));
+    });
+}
+
+export default function setupToggleButtons(container, clickCallback = () => {}) {
+  const toggles = container.querySelectorAll('.js-project-feature-toggle');
+
+  toggles.forEach((toggle) => {
+    const input = toggle.querySelector('.js-project-feature-toggle-input');
+    const isOn = convertPermissionToBoolean(input.value);
+
+    // Get the visible toggle in sync with the hidden input
+    updatetoggle(toggle, isOn);
+
+    toggle.addEventListener('click', onToggleClicked.bind(null, toggle, input, clickCallback));
+  });
+}

app/views/projects/clusters/_cluster.html.haml

@@ -12,11 +12,12 @@
   .table-section.section-10
     .table-mobile-header{ role: "rowheader" }
     .table-mobile-content
-      %button{ type: "button",
-        class: "js-toggle-cluster-list project-feature-toggle #{'is-checked' if cluster.enabled?} #{'is-disabled' if !cluster.can_toggle_cluster?}",
+      %button.js-project-feature-toggle.project-feature-toggle{ type: "button",
+        class: "#{'is-checked' if cluster.enabled?} #{'is-disabled' if !cluster.can_toggle_cluster?}",
         "aria-label": s_("ClusterIntegration|Toggle Cluster"),
         disabled: !cluster.can_toggle_cluster?,
         data: { endpoint: namespace_project_cluster_path(@project.namespace, @project, cluster, format: :json) } }
+        %input.js-project-feature-toggle-input{ type: "hidden", value: cluster.enabled? }
         = icon("spinner spin", class: "loading-icon")
         %span.toggle-icon
           = sprite_icon('status_success_borderless', size: 16, css_class: 'toggle-icon-svg toggle-status-checked')

app/views/projects/clusters/_integration_form.html.haml

@@ -10,13 +10,12 @@
           = s_('ClusterIntegration|Cluster integration is enabled for this project.')
       - else
         = s_('ClusterIntegration|Cluster integration is disabled for this project.')
-    %label.append-bottom-10
-      = field.hidden_field :enabled, { class: 'js-toggle-input'}
-
+    %label.append-bottom-10.js-cluster-enable-toggle-area
       %button{ type: 'button',
-        class: "js-toggle-cluster project-feature-toggle #{'is-checked' unless !@cluster.enabled?} #{'is-disabled' unless can?(current_user, :update_cluster, @cluster)}",
+        class: "js-project-feature-toggle project-feature-toggle #{'is-checked' if @cluster.enabled?} #{'is-disabled' unless can?(current_user, :update_cluster, @cluster)}",
         "aria-label": s_("ClusterIntegration|Toggle Cluster"),
         disabled: !can?(current_user, :update_cluster, @cluster) }
+        = field.hidden_field :enabled, { class: 'js-project-feature-toggle-input'}
         %span.toggle-icon
           = sprite_icon('status_success_borderless', size: 16, css_class: 'toggle-icon-svg toggle-status-checked')
           = sprite_icon('status_failed_borderless', size: 16, css_class: 'toggle-icon-svg toggle-status-unchecked')

spec/features/projects/clusters/gcp_spec.rb

@@ -95,7 +95,7 @@ feature 'Gcp Cluster', :js do
 
         context 'when user disables the cluster' do
           before do
-            page.find(:css, '.js-toggle-cluster').click
+            page.find(:css, '.js-cluster-enable-toggle-area .js-project-feature-toggle').click
             page.within('#cluster-integration') { click_button 'Save changes' }
           end
 

spec/features/projects/clusters/user_spec.rb

@@ -62,7 +62,7 @@ feature 'User Cluster', :js do
 
     context 'when user disables the cluster' do
       before do
-        page.find(:css, '.js-toggle-cluster').click
+        page.find(:css, '.js-cluster-enable-toggle-area .js-project-feature-toggle').click
         fill_in 'cluster_name', with: 'dev-cluster'
         page.within('#cluster-integration') { click_button 'Save changes' }
       end

spec/features/projects/clusters_spec.rb

@@ -37,13 +37,13 @@ feature 'Clusters', :js do
 
     context 'inline update of cluster' do
       it 'user can update cluster' do
-        expect(page).to have_selector('.js-toggle-cluster-list')
+        expect(page).to have_selector('.js-project-feature-toggle')
       end
 
       context 'with sucessfull request' do
         it 'user sees updated cluster' do
           expect do
-            page.find('.js-toggle-cluster-list').click
+            page.find('.js-project-feature-toggle').click
             wait_for_requests
           end.to change { cluster.reload.enabled }
 
@@ -57,7 +57,7 @@ feature 'Clusters', :js do
           expect_any_instance_of(Clusters::UpdateService).to receive(:execute).and_call_original
           allow_any_instance_of(Clusters::Cluster).to receive(:valid?) { false }
 
-          page.find('.js-toggle-cluster-list').click
+          page.find('.js-project-feature-toggle').click
 
           expect(page).to have_content('Something went wrong on our end.')
           expect(page).to have_selector('.is-checked')

spec/javascripts/clusters/clusters_bundle_spec.js

@@ -23,16 +23,24 @@ describe('Clusters', () => {
   });
 
   describe('toggle', () => {
-    it('should update the button and the input field on click', () => {
-      cluster.toggleButton.click();
+    it('should update the button and the input field on click', (done) => {
+      const toggleButton = document.querySelector('.js-cluster-enable-toggle-area .js-project-feature-toggle');
+      const toggleInput = document.querySelector('.js-cluster-enable-toggle-area .js-project-feature-toggle-input');
 
+      toggleButton.click();
+
+      getSetTimeoutPromise()
+        .then(() => {
           expect(
-        cluster.toggleButton.classList,
+            toggleButton.classList,
           ).not.toContain('is-checked');
 
           expect(
-        cluster.toggleInput.getAttribute('value'),
+            toggleInput.getAttribute('value'),
           ).toEqual('false');
+        })
+        .then(done)
+        .catch(done.fail);
     });
   });
 

spec/javascripts/clusters/clusters_index_spec.js

-import MockAdapter from 'axios-mock-adapter';
-import axios from '~/lib/utils/axios_utils';
-import setClusterTableToggles from '~/clusters/clusters_index';
-import { setTimeout } from 'core-js/library/web/timers';
-
-describe('Clusters table', () => {
-  preloadFixtures('clusters/index_cluster.html.raw');
-  let mock;
-
-  beforeEach(() => {
-    loadFixtures('clusters/index_cluster.html.raw');
-    mock = new MockAdapter(axios);
-    setClusterTableToggles();
-  });
-
-  describe('update cluster', () => {
-    it('renders loading state while request is made', () => {
-      const button = document.querySelector('.js-toggle-cluster-list');
-
-      button.click();
-
-      expect(button.classList).toContain('is-loading');
-      expect(button.getAttribute('disabled')).toEqual('true');
-    });
-
-    afterEach(() => {
-      mock.restore();
-    });
-
-    it('shows updated state after sucessfull request', (done) => {
-      mock.onPut().reply(200, {}, {});
-      const button = document.querySelector('.js-toggle-cluster-list');
-      button.click();
-
-      expect(button.classList).toContain('is-loading');
-
-      setTimeout(() => {
-        expect(button.classList).not.toContain('is-loading');
-        expect(button.classList).not.toContain('is-checked');
-        done();
-      }, 0);
-    });
-
-    it('shows inital state after failed request', (done) => {
-      mock.onPut().reply(500, {}, {});
-      const button = document.querySelector('.js-toggle-cluster-list');
-
-      button.click();
-      expect(button.classList).toContain('is-loading');
-
-      setTimeout(() => {
-        expect(button.classList).not.toContain('is-loading');
-        expect(button.classList).toContain('is-checked');
-        done();
-      }, 0);
-    });
-  });
-});

spec/javascripts/fixtures/clusters.rb

@@ -31,19 +31,4 @@ describe Projects::ClustersController, '(JavaScript fixtures)', type: :controlle
     expect(response).to be_success
     store_frontend_fixture(response, example.description)
   end
-
-  context 'rendering non-empty state' do
-    before do
-      cluster
-    end
-
-    it 'clusters/index_cluster.html.raw' do |example|
-      get :index,
-        namespace_id: namespace,
-        project_id: project
-
-      expect(response).to be_success
-      store_frontend_fixture(response, example.description)
-    end
-  end
 end

spec/javascripts/toggle_buttons_spec.js

+import setupToggleButtons from '~/toggle_buttons';
+import getSetTimeoutPromise from './helpers/set_timeout_promise_helper';
+
+function generateMarkup(isChecked = true) {
+  return `
+    <button type="button" class="${isChecked ? 'is-checked' : ''} js-project-feature-toggle">
+      <input type="hidden" class="js-project-feature-toggle-input" value="${isChecked}" />
+    </button>
+  `;
+}
+
+function setupFixture(isChecked, clickCallback) {
+  const wrapper = document.createElement('div');
+  wrapper.innerHTML = generateMarkup(isChecked);
+
+  setupToggleButtons(wrapper, clickCallback);
+
+  return wrapper;
+}
+
+describe('ToggleButtons', () => {
+  describe('when input value is true', () => {
+    it('should initialize as checked', () => {
+      const wrapper = setupFixture(true);
+
+      expect(wrapper.querySelector('.js-project-feature-toggle').classList.contains('is-checked')).toEqual(true);
+      expect(wrapper.querySelector('.js-project-feature-toggle-input').value).toEqual('true');
+    });
+
+    it('should toggle to unchecked when clicked', (done) => {
+      const wrapper = setupFixture(true);
+      const toggleButton = wrapper.querySelector('.js-project-feature-toggle');
+
+      toggleButton.click();
+
+      getSetTimeoutPromise()
+        .then(() => {
+          expect(toggleButton.classList.contains('is-checked')).toEqual(false);
+          expect(wrapper.querySelector('.js-project-feature-toggle-input').value).toEqual('false');
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+
+  describe('when input value is false', () => {
+    it('should initialize as unchecked', () => {
+      const wrapper = setupFixture(false);
+
+      expect(wrapper.querySelector('.js-project-feature-toggle').classList.contains('is-checked')).toEqual(false);
+      expect(wrapper.querySelector('.js-project-feature-toggle-input').value).toEqual('false');
+    });
+
+    it('should toggle to checked when clicked', (done) => {
+      const wrapper = setupFixture(false);
+      const toggleButton = wrapper.querySelector('.js-project-feature-toggle');
+
+      toggleButton.click();
+
+      getSetTimeoutPromise()
+        .then(() => {
+          expect(toggleButton.classList.contains('is-checked')).toEqual(true);
+          expect(wrapper.querySelector('.js-project-feature-toggle-input').value).toEqual('true');
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+
+  it('should emit `trigger-change` event', (done) => {
+    const changeSpy = jasmine.createSpy('changeEventHandler');
+    const wrapper = setupFixture(false);
+    const toggleButton = wrapper.querySelector('.js-project-feature-toggle');
+    const input = wrapper.querySelector('.js-project-feature-toggle-input');
+
+    $(input).on('trigger-change', changeSpy);
+
+    toggleButton.click();
+
+    getSetTimeoutPromise()
+      .then(() => {
+        expect(changeSpy).toHaveBeenCalled();
+      })
+      .then(done)
+      .catch(done.fail);
+  });
+
+  describe('clickCallback', () => {
+    it('should show loading indicator while waiting', (done) => {
+      const isChecked = true;
+      const clickCallback = (newValue, toggleButton) => {
+        const input = toggleButton.querySelector('.js-project-feature-toggle-input');
+
+        expect(newValue).toEqual(false);
+
+        // Check for the loading state
+        expect(toggleButton.classList.contains('is-checked')).toEqual(false);
+        expect(toggleButton.classList.contains('is-loading')).toEqual(true);
+        expect(toggleButton.disabled).toEqual(true);
+        expect(input.value).toEqual('true');
+
+        // After the callback finishes, check that the loading state is gone
+        getSetTimeoutPromise()
+          .then(() => {
+            expect(toggleButton.classList.contains('is-checked')).toEqual(false);
+            expect(toggleButton.classList.contains('is-loading')).toEqual(false);
+            expect(toggleButton.disabled).toEqual(false);
+            expect(input.value).toEqual('false');
+          })
+          .then(done)
+          .catch(done.fail);
+      };
+
+      const wrapper = setupFixture(isChecked, clickCallback);
+      const toggleButton = wrapper.querySelector('.js-project-feature-toggle');
+
+      toggleButton.click();
+    });
+  });
+});