1 files changed, 77 insertions, 0 deletions
diff --git a/modules/locale/locale.field.inc b/modules/locale/locale.field.inc
new file mode 100644
index 000000000..bfb102edf
--- /dev/null
+++ b/modules/locale/locale.field.inc
@@ -0,0 +1,77 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Field API multilingual handling.
+ */
+
+/**
+ * Form submit handler for node_form().
+ *
+ * Update the field language according to the node language, changing the
+ * previous language if necessary.
+ */
+function locale_field_node_form_update_field_language($form, &$form_state, $reset_previous = TRUE) {
+  $node = (object) $form_state['values'];
+  $available_languages = field_multilingual_content_languages();
+  // @todo: Unify language neutral language codes.
+  $selected_language = empty($node->language) ? FIELD_LANGUAGE_NONE : $node->language;
+  list(, , $bundle) = field_extract_ids('node', $node);
+
+  foreach (field_info_instances('node', $bundle) as $instance) {
+    $field_name = $instance['field_name'];
+    $field = field_info_field($field_name);
+    $previous_language = $form[$field_name]['#language'];
+
+    // Handle a possible language change: previous language values are deleted,
+    // new ones are inserted.
+    if ($field['translatable'] && $previous_language != $selected_language) {
+      $form_state['values'][$field_name][$selected_language] = $node->{$field_name}[$previous_language];
+      if ($reset_previous) {
+        $form_state['values'][$field_name][$previous_language] = array();
+      }
+    }
+  }
+}
+
+/**
+ * Apply fallback rules to the given object.
+ *
+ * Parameters are the same of hook_field_attach_view().
+ */
+function locale_field_fallback_view(&$output, $context) {
+  // Lazily init fallback values and candidates to avoid unnecessary calls.
+  $fallback_values = array();
+  $fallback_candidates = NULL;
+  list(, , $bundle) = field_extract_ids($context['obj_type'], $context['object']);
+
+  foreach (field_info_instances($context['obj_type'], $bundle) as $instance) {
+    $field_name = $instance['field_name'];
+    $field = field_info_field($field_name);
+
+    // If the items array is empty then we have a missing field translation.
+    // @todo: Verify this assumption.
+    if (empty($output[$field_name]['items'])) {
+      if (!isset($fallback_candidates)) {
+        require_once DRUPAL_ROOT . '/includes/language.inc';
+        $fallback_candidates = language_fallback_get_candidates();
+      }
+
+      foreach ($fallback_candidates as $langcode) {
+        // Again if we have a non-empty array we assume the field translation is
+        // valid.
+        if (!empty($context['object']->{$field_name}[$langcode])) {
+          // Cache fallback values per language as fields might have different
+          // fallback values.
+          if (!isset($fallback_values[$langcode])) {
+            $fallback_values[$langcode] = field_attach_view($context['obj_type'], $context['object'], $context['build_mode'], $langcode);
+          }
+          // We are done, skip to the next field.
+          $output[$field_name] = $fallback_values[$langcode][$field_name];
+          break;
+        }
+      }
+    }
+  }
+}