Issue #1143628 by codycraven, vito_swat: Fixed inability to enable/disable...

Issue #1143628 by codycraven, vito_swat: Fixed inability to enable/disable term page displays when Display Suite is not installed/enabled.

taxonomy_display.admin.inc

@@ -37,7 +37,7 @@ function taxonomy_display_admin_form(&$form, &$form_state) {
     // display to match.
     $entity_info = entity_get_info('taxonomy_term');
     $view_mode_settings = field_view_mode_settings('taxonomy_term', $form['#bundle']);
-    if ($view_mode_settings['full']['custom_settings']) {
+    if (isset($view_mode_settings['full']['custom_settings'])) {
       $field['#description'] = 'To alter the term page display you need to go to the <em>Taxonomy term page</em> view mode.';
     }
     else {
@@ -112,12 +112,16 @@ function taxonomy_display_admin_form_setup_additional_settings(&$form) {
     $form['additional_settings']['modes']['#weight'] = -10;
     unset($form['modes']);
   }
+
+  // Layout needs be first so we can reset the type key for Field API fields.
+  $form['#validate'][] = 'taxonomy_display_field_ui_layouts_validate';
 }
 
 /**
  * Form submit callback; save Taxonomy Display settings for term pages.
  */
 function taxonomy_display_admin_form_submit($form, &$form_state) {
+  dpm($form_state);
   $values =& $form_state['values']['additional_settings']['taxonomy_display'];
   $td_form =& $form['additional_settings']['taxonomy_display'];
 
@@ -184,6 +188,17 @@ function taxonomy_display_ajax_term_display_callback($form, $form_state) {
   return $form['additional_settings']['taxonomy_display']['term_display_form'];
 }
 
+/**
+ * Validate handler; Move the view modes so Field UI can handle them.
+ *
+ * Modified from Display Suite since we are using the same form set.
+ */
+function taxonomy_display_field_ui_layouts_validate($form, &$form_state) {
+  if (isset($form_state['values']['additional_settings']['modes']['view_modes_custom'])) {
+    $form_state['values']['view_modes_custom'] = $form_state['values']['additional_settings']['modes']['view_modes_custom'];
+  }
+}
+
 /**
  * Helper function; build the admin form for plugins.
  *