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- <?php
- /**
- * @file
- * Provide diff field functions for the Field collection module.
- */
- /**
- * Diff field callback for parsing Field collection fields comparative values.
- */
- function field_collection_field_diff_view($items, $context) {
- $diff_items = array();
- foreach ($items as $delta => $item) {
- $diff_items[$delta] = field_collection_field_render_revision($item, $context);
- }
- return $diff_items;
- }
- /**
- * Renders a field collection fields revision.
- */
- function field_collection_field_render_revision($item, $context) {
- $entity_type = 'field_collection_item';
- $bundle_name = $context['field']['field_name'];
- $view_mode = $context['view_mode'];
- $entity = entity_revision_load($entity_type, $item['revision_id']);
- $field_context = $context;
- $field_context['entity_type'] = $entity_type;
- $field_context['bundle'] = $bundle_name;
- $field_context['entity'] = $entity;
- // Some fields piggy back the display settings, so we need to fake these by
- // ensuring that the field mode is always set.
- if (empty($view_mode)) {
- $field_context['custom_settings'] = FALSE;
- }
- $view_mode_settings = field_view_mode_settings($entity_type, $bundle_name);
- $actual_mode = (!empty($view_mode_settings[$view_mode]['custom_settings'])) ? $view_mode : 'default';
- if (!isset($field_context['custom_settings'])) {
- $field_context['custom_settings'] = $actual_mode && $actual_mode == $view_mode;
- }
- $instances = field_info_instances($entity_type, $field_context['bundle']);
- usort($instances, '_field_collection_sort_items');
- $result = array();
- foreach ($instances as $instance) {
- // Any view mode is supported in relation to hiding fields, but only if selected.
- if ($actual_mode && $instance['display'][$actual_mode]['type'] == 'hidden') {
- continue;
- }
- $field_name = $instance['field_name'];
- $field = field_info_field($field_name);
- // We provide a loose check on the field access.
- if (field_access('view', $field, $entity_type) || field_access('edit', $field, $entity_type)) {
- $langcode = field_language($entity_type, $entity, $field_name);
- $field_context['language'] = $langcode;
- $field_context['field'] = $field;
- $field_context['instance'] = $instance;
- $field_context['settings'] = diff_get_field_settings($field_context);
- $field_context['display'] = $instance['display'][$actual_mode];
- $func = $field['module'] . '_field_diff_view';
- if (!function_exists($func)) {
- $func = 'diff_field_diff_view';
- }
- if (!empty($entity->{$field_name}[$langcode])) {
- $raw_values = $func($entity->{$field_name}[$langcode], $field_context);
- $values = array();
- foreach ($raw_values as $raw_value) {
- $values[] = is_array($raw_value) ? implode(", ", $raw_value) : $raw_value;
- }
- $result[] = check_plain($instance['label'] . ': ' . implode(", ", $values));
- }
- }
- }
- return $result;
- }
- /**
- * Sort function for items order.
- */
- function _field_collection_sort_items($a, $b) {
- $a_weight = (!empty($a['widget']['weight']) ? $a['widget']['weight'] : 0);
- $b_weight = (!empty($b['widget']['weight']) ? $b['widget']['weight'] : 0);
- return $a_weight - $b_weight;
- }
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