[GOVRACPROD-46] Add warning message and popup for checkbox 'Enable OpenFisca RaC integration' in webform.

js/openfisca-checkbox-popup.js

@@ -0,0 +1,28 @@
+(function (Drupal, drupalSettings) {
+  Drupal.behaviors.openFiscaCheckboxPopup = {
+    attach: function (context, settings) {
+      // Ensure we only attach once per context.
+      const checkboxes = context.querySelectorAll(
+        'input[name="third_party_settings[webform_openfisca][fisca_enabled]"]'
+      );
+
+      checkboxes.forEach(function (checkbox) {
+        if (!checkbox.dataset.popupAttached) {
+          checkbox.dataset.popupAttached = true;
+
+          checkbox.addEventListener('change', function () {
+            if (checkbox.checked) {
+              Drupal.dialog(
+                '<p>Please make sure that you have disabled saving of submissions for this form.</p>',
+                {
+                  title: 'Important Notice',
+                  width: 400
+                }
+              ).showModal();
+            }
+          });
+        }
+      });
+    }
+  };
+})(Drupal, drupalSettings);

src/WebformThirdPartySettingsFormAlter.php

@@ -155,7 +155,11 @@ public function alterForm(array &$form, FormStateInterface $form_state): void {
       '#default_value' => $openfisca_settings->hasImmediateResponseAjaxIndicator(),
       '#weight' => 20,
     ];
+
     $form['#validate'][] = [$this, 'validateForm'];
+
+    // Add popup for fisca_enabled checkbox.
+    $form['#attached']['library'][] = 'webform_openfisca/openfisca-checkbox-popup';
   }
 
   /**
@@ -174,6 +178,13 @@ public function validateForm(array $form, FormStateInterface $form_state): void
       // @codeCoverageIgnoreEnd
     }
 
+    $enabled = $form_state->getValue(['third_party_settings', 'webform_openfisca', 'fisca_enabled']);
+    if ($enabled) {
+      $this->messenger->addWarning(
+        $this->t('Please make sure that you have disabled saving of submissions for this form.')
+      );
+    }
+
     $fisca_endpoint = $form_state->getValue(
       ['third_party_settings', 'webform_openfisca', 'fisca_api_endpoint']
     ) ?: '';

webform_openfisca.libraries.yml

@@ -5,3 +5,9 @@ immediate_response:
     - core/drupal
     - core/jquery
     - core/once
+
+openfisca-checkbox-popup:
+  js:
+    js/openfisca-checkbox-popup.js: {}
+  dependencies:
+    - core/drupal.dialog