Generalize toggle_buttons.js

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

1 files changed, 61 insertions, 0 deletions

diff --git a/app/assets/javascripts/toggle_buttons.js b/app/assets/javascripts/toggle_buttons.js
new file mode 100644
index 00000000000..974dc3ee052
--- /dev/null
+++ b/app/assets/javascripts/toggle_buttons.js
@@ -0,0 +1,61 @@
+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));
+  });
+}