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<?php
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/**
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* @file
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* Provides info for fields.
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*/
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/**
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* Implements hook_entity_property_info() on top of field module.
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*
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* @see entity_field_info_alter()
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* @see entity_entity_property_info()
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*/
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function entity_metadata_field_entity_property_info() {
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$info = array();
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// Loop over all field instances and add them as property.
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foreach (field_info_fields() as $field_name => $field) {
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$field += array('bundles' => array());
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if ($field_type = field_info_field_types($field['type'])) {
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// Add in our default callback as the first one.
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$field_type += array('property_callbacks' => array());
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array_unshift($field_type['property_callbacks'], 'entity_metadata_field_default_property_callback');
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foreach ($field['bundles'] as $entity_type => $bundles) {
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foreach ($bundles as $bundle) {
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$instance = field_info_instance($entity_type, $field_name, $bundle);
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if ($instance && empty($instance['deleted'])) {
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foreach ($field_type['property_callbacks'] as $callback) {
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$callback($info, $entity_type, $field, $instance, $field_type);
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}
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}
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}
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}
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}
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}
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return $info;
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}
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/**
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* Callback to add in property info defaults per field instance.
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* @see entity_metadata_field_entity_property_info().
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*/
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function entity_metadata_field_default_property_callback(&$info, $entity_type, $field, $instance, $field_type) {
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if (!empty($field_type['property_type'])) {
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if ($field['cardinality'] != 1) {
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$field_type['property_type'] = 'list<' . $field_type['property_type'] . '>';
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}
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// Add in instance specific property info, if given and apply defaults.
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$name = $field['field_name'];
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$name];
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$instance += array('property info' => array());
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$property = $instance['property info'] + array(
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'label' => $instance['label'],
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'type' => $field_type['property_type'],
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'description' => t('Field "@name".', array('@name' => $name)),
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'getter callback' => 'entity_metadata_field_property_get',
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'setter callback' => 'entity_metadata_field_property_set',
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'access callback' => 'entity_metadata_field_access_callback',
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'query callback' => 'entity_metadata_field_query',
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'translatable' => !empty($field['translatable']),
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// Specify that this property stems from a field.
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'field' => TRUE,
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'required' => !empty($instance['required']),
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);
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// For field types of the list module add in the options list callback.
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if (strpos($field['type'], 'list') === 0) {
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$property['options list'] = 'entity_metadata_field_options_list';
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}
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}
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}
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/**
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* Additional callback to adapt the property info for text fields. If a text
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* field is processed we make use of a separate data structure so that format
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* filters are available too. For the text value the sanitized, thus processed
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* value is returned by default.
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*
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* @see entity_metadata_field_entity_property_info()
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* @see entity_field_info_alter()
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* @see entity_property_text_formatted_info()
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*/
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function entity_metadata_field_text_property_callback(&$info, $entity_type, $field, $instance, $field_type) {
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if (!empty($instance['settings']['text_processing']) || $field['type'] == 'text_with_summary') {
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// Define a data structure for dealing with text that is formatted or has
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// a summary.
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$field['field_name']];
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$property['getter callback'] = 'entity_metadata_field_verbatim_get';
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$property['setter callback'] = 'entity_metadata_field_verbatim_set';
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unset($property['query callback']);
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if (empty($instance['settings']['text_processing'])) {
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$property['property info'] = entity_property_field_item_textsummary_info();
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}
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else {
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// For formatted text we use the type name 'text_formatted'.
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$property['type'] = ($field['cardinality'] != 1) ? 'list<text_formatted>' : 'text_formatted';
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$property['property info'] = entity_property_text_formatted_info();
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}
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// Enable auto-creation of the item, so that it is possible to just set
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// the textual or summary value.
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$property['auto creation'] = 'entity_property_create_array';
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if ($field['type'] != 'text_with_summary') {
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unset($property['property info']['summary']);
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}
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}
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}
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/**
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* Additional callback to adapt the property info for term reference fields.
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* @see entity_metadata_field_entity_property_info().
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*/
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function entity_metadata_field_term_reference_callback(&$info, $entity_type, $field, $instance, $field_type) {
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$field['field_name']];
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if (count($field['settings']['allowed_values']) == 1) {
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$settings = reset($field['settings']['allowed_values']);
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$property['bundle'] = $settings['vocabulary'];
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}
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// Only add the options list callback for controlled vocabularies, thus
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// vocabularies not using the autocomplete widget.
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if ($instance['widget']['type'] != 'taxonomy_autocomplete') {
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$property['options list'] = 'entity_metadata_field_options_list';
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}
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}
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/**
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* Additional callback to adapt the property info for file fields.
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* @see entity_metadata_field_entity_property_info().
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*/
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function entity_metadata_field_file_callback(&$info, $entity_type, $field, $instance, $field_type) {
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$field['field_name']];
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// Define a data structure so it's possible to deal with files and their
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// descriptions.
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$property['getter callback'] = 'entity_metadata_field_verbatim_get';
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$property['setter callback'] = 'entity_metadata_field_verbatim_set';
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// Auto-create the field $items as soon as a property is set.
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$property['auto creation'] = 'entity_metadata_field_file_create_item';
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$property['validation callback'] = 'entity_metadata_field_file_validate_item';
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$property['property info'] = entity_property_field_item_file_info();
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if (empty($instance['settings']['description_field'])) {
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unset($property['property info']['description']);
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}
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if (empty($field['settings']['display_field'])) {
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unset($property['property info']['display']);
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}
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unset($property['query callback']);
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}
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/**
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* Additional callback to adapt the property info for image fields.
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* This callback gets invoked after entity_metadata_field_file_callback().
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* @see entity_metadata_field_entity_property_info().
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*/
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function entity_metadata_field_image_callback(&$info, $entity_type, $field, $instance, $field_type) {
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$field['field_name']];
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// Update the property info with the info for image fields.
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$property['property info'] = entity_property_field_item_image_info();
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if (empty($instance['settings']['alt_field'])) {
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unset($property['property info']['alt']);
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}
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if (empty($field['settings']['title_field'])) {
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unset($property['property info']['title']);
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}
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}
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