Handling also search_api autocomplete.

Author: nignatov

modules/elasticsearch_connector_search_api/elasticsearch_connector_search_api.module

@@ -266,6 +266,38 @@ function elasticsearch_connector_search_api_module_implements_alter(&$implementa
   if ($hook == 'form_views_exposed_form_alter') {
     unset($implementations['search_api_autocomplete']);
   }
+  elseif ($hook == 'form_search_api_page_search_form') {
+    unset($implementations['search_api_autocomplete']);
+  }
+}
+
+/**
+ * Implements hook_form_FORM_ID_alter().
+ *
+ * Adds autocompletion to the keywords field on search pages, if enabled by the
+ * user.
+ */
+function elasticsearch_connector_search_api_form_search_api_page_search_form_alter(array &$form, array &$form_state) {
+  if (isset($form['form'])) {
+    $form = &$form['form'];
+  }
+  $id = 'search_api_page_' . $form['id']['#value'];
+  $search = search_api_autocomplete_search_load($id);
+  if ($search && $search->enabled) {
+    $include_js = FALSE;
+    $search->alterElement($form['keys_' . $form['id']['#value']]);
+    if (!empty($search->options['custom']['link_suggestions'])) {
+      $form['keys_' . $form['id']['#value']]['#attributes'] = array(
+        'class' => array('elasticsearch-autocomplete')
+      );
+      $include_js = TRUE;
+    }
+
+    if ($include_js) {
+      $form['#attached']['js'][] =
+        drupal_get_path('module', 'elasticsearch_connector_search_api') . '/js/elasticsearch_connector_search_api_autocomplete.js';
+    }
+  }
 }
 
 /**