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- <?php
- /**
- * @file
- * The menu specific translation functions and hook implementations.
- */
- /**
- * Implements hook_node_prepare().
- *
- * Translates the menu item shown on node edit forms if the node language does
- * not equal the language of the menu item. This means either loading the
- * respective menu item from the translation set or localizing the item.
- */
- function entity_translation_i18n_menu_node_prepare($node) {
- $langcode = entity_language('node', $node);
- if (!empty($langcode) && !empty($node->menu['language']) && $node->menu['language'] != $langcode && entity_translation_i18n_menu_item($node->menu)) {
- $handler = entity_translation_get_handler('node', $node);
- $source_langcode = $handler->getSourceLanguage();
- // If we are creating a translation we need to use the source language.
- entity_translation_i18n_menu_node_menu_item_translate($node, $source_langcode ? $source_langcode : $langcode);
- }
- }
- /**
- * Implements hook_module_implements_alter().
- */
- function entity_translation_i18n_menu_module_implements_alter(&$implementations, $hook) {
- switch ($hook) {
- case 'node_prepare':
- case 'node_presave':
- // Move some of our hook implementations to end of list. Required so that
- // the 'menu' key is populated when our implementation gets called. This
- // also prevents our changes from being overridden.
- $group = $implementations['entity_translation_i18n_menu'];
- unset($implementations['entity_translation_i18n_menu']);
- $implementations['entity_translation_i18n_menu'] = $group;
- break;
- }
- }
- /**
- * Implements hook_node_presave().
- */
- function entity_translation_i18n_menu_node_presave($node) {
- if (!entity_translation_enabled('node')) {
- return;
- }
- $handler = entity_translation_get_handler('node', $node);
- $translations = $handler->getTranslations();
- $source_langcode = $handler->getSourceLanguage();
- $tset = !empty($node->menu['tset']);
- // If no translation is available the menu data is always supposed to be
- // entered in the source string language. This way we avoid having unneeded
- // string translations hanging around.
- if (empty($source_langcode) && count($translations->data) < 2 && !$tset) {
- return;
- }
- // When creating a new translation, leave the source menu item intact and
- // create a new one.
- $langcode = entity_language('node', $node);
- if (!empty($node->menu) && $tset && !empty($source_langcode)) {
- $node->source_menu = menu_link_load($node->menu['mlid']);
- unset($node->menu['mlid']);
- }
- // Store the entity language for later reference when saving a translation.
- // If we are editing a translation in the string source language, we can skip
- // item processing since the proper values are already in place. Instead when
- // creating the translation we need to process the link item before saving it.
- if (!empty($node->menu) && !empty($langcode) && ($source_langcode || $langcode != i18n_string_source_language())) {
- $node->menu['entity_language'] = $langcode;
- $node->menu['entity_translation_handler'] = $handler;
- }
- // If we have a translation set here we should prepare it for storage,
- // otherwise we need to ensure the menu item has no language so it can be
- // localized.
- if ($tset) {
- entity_translation_i18n_menu_item_tset_prepare($node, $langcode);
- }
- else {
- $node->menu['language'] = LANGUAGE_NONE;
- }
- }
- /**
- * Implements hook_form_FORM_ID_alter().
- */
- function entity_translation_i18n_menu_form_menu_edit_item_alter(&$form, &$form_state) {
- $form['#validate'][] = 'entity_translation_i18n_menu_form_menu_edit_item_validate';
- }
- /**
- * Implements hook_menu_link_alter().
- */
- function entity_translation_i18n_menu_menu_link_alter(&$link) {
- if (!empty($link['mlid']) && !empty($link['entity_language']) && $link['language'] == LANGUAGE_NONE && entity_translation_i18n_menu_item($link)) {
- $sources = array();
- foreach (array('title' => 'link_title', 'description' => 'description') as $key => $link_field) {
- $name = array('menu', 'item', $link['mlid'], $key);
- $source = i18n_string_get_source($name);
- // The source might not exist yet.
- $sources[$key] = is_object($source) ? $source->get_string() : $link[$link_field];
- }
- // If the link values to be saved are translated, we need to revert the
- // localized menu link back to the original. This way they can be saved
- // without accidentially storing a translation string as a source string.
- // The translated values are put in a separate key for later reference.
- if ($link['entity_language'] != i18n_string_source_language()) {
- $link['entity_translation_strings'] = array(
- 'title' => $link['link_title'],
- 'description' => $link['description'],
- );
- $link['link_title'] = $sources['title'];
- $link['options']['attributes']['title'] = $sources['description'];
- }
- // If the link values are in the string source language, we need to save
- // the previous source values as translations. As a matter of fact this can
- // happen only when initially creating a menu item in a language different
- // from the source string one.
- else {
- $link['entity_translation_strings'] = array(
- 'title' => $sources['title'],
- 'description' => $sources['description'],
- );
- $link['entity_language'] = $link['entity_translation_handler']->getLanguage();
- }
- }
- }
- /**
- * Implements hook_menu_link_update().
- */
- function entity_translation_i18n_menu_menu_link_update($link) {
- // Make sure localizations are saved properly.
- if (entity_translation_i18n_menu_item($link) && !empty($link['entity_translation_strings'])) {
- $string_langcode = isset($link['entity_language']) ? $link['entity_language'] : i18n_string_source_language();
- $name = implode(':', array('menu', 'item', $link['mlid']));
- foreach ($link['entity_translation_strings'] as $key => $translation) {
- i18n_string_translation_update($name . ':' . $key, $translation, $string_langcode);
- }
- }
- }
- /**
- * Menu specific alterations for the entity form.
- *
- * Adds to the regular menu item widget a checkbox to choose whether the current
- * menu item should be localized or part of a translation set.
- */
- function entity_translation_i18n_menu_form(&$form, &$form_state) {
- $info = entity_translation_edit_form_info($form, $form_state);
- if ($info && $info['entity type'] == 'node') {
- $node = $info['entity'];
- $source_menu = isset($node->source_menu) ? $node->source_menu : $node->menu;
- // Check that the menu item of the source node is translatable.
- if (isset($form['menu']) && !empty($source_menu) && i18n_menu_mode($source_menu['menu_name'], I18N_MODE_MULTIPLE)) {
- $default = isset($source_menu['language']) && $source_menu['language'] != LANGUAGE_NONE;
- $languages = language_list();
- $handler = entity_translation_entity_form_get_handler($form, $form_state);
- $langcode = $handler->getFormLanguage();
- $language_name = isset($languages[$langcode]) ? t($languages[$langcode]->name) : t('current');
- $form['menu']['#multilingual'] = TRUE;
- $form['menu']['link']['tset'] = array(
- '#type' => 'checkbox',
- '#title' => t('Menu link enabled only for the %language language', array('%language' => $language_name)),
- '#prefix' => '<label>' . t('Menu translation') . '</label>',
- '#default_value' => $default,
- '#description' => t('Create a different menu link for each translation. Every link will have its own parent and weight, otherwise only title and description will be translated.'),
- '#weight' => 10,
- );
- if (!empty($default)) {
- $translation_set = i18n_menu_translation_load($source_menu['i18n_tsid']);
- $translations = $translation_set ? $translation_set->get_translations() : FALSE;
- if (!empty($translations) && (count($translations) > 1 || !isset($translations[$langcode]))) {
- $form['menu']['link']['tset']['#disabled'] = TRUE;
- }
- }
- }
- }
- }
- /**
- * Validation handler for the menu item edit form.
- */
- function entity_translation_i18n_menu_form_menu_edit_item_validate($form, &$form_state) {
- $item = $form_state['values'];
- // Localizable menu items should not be created when a translation set for the
- // same path already exists (exluding special paths starting by <).
- if ($item['language'] == LANGUAGE_NONE && strpos($item['link_path'], '<') !== 0) {
- $count = db_select('menu_links', 'ml')
- ->condition('ml.link_path', $item['link_path'])
- ->condition('ml.i18n_tsid', 0, '<>')
- ->countQuery()
- ->execute()
- ->fetchField();
- if (!empty($count)) {
- form_set_error('language', t('There are already one or more items with a language assigned for the given path. Remove them or assign a language to this item too.'));
- }
- }
- }
- /**
- * Checks whether a given menu item is translatable through entity translation.
- *
- * @param array $item
- * A menu item.
- *
- * @todo
- * Find more generic way of determining whether ET is enabled for a link; add
- * support for other entities, e.g. taxonomy_term (?).
- */
- function entity_translation_i18n_menu_item($item) {
- $cache = &drupal_static(__FUNCTION__, array());
- if (!isset($cache[$item['link_path']])) {
- // First check that the item belongs to a menu which has translation
- // enabled.
- if (!i18n_menu_mode($item['menu_name'], I18N_MODE_MULTIPLE)) {
- $cache[$item['link_path']] = FALSE;
- }
- // Check if the respective node type has entity translation enabled.
- if (preg_match('!^node/(\d+)(/.+|)$!', $item['link_path'], $matches)) {
- if (!entity_translation_enabled('node')) {
- $cache[$item['link_path']] = FALSE;
- }
- else {
- $type = db_select('node', 'n')
- ->condition('nid', $matches[1])
- ->fields('n', array('type'))
- ->execute()->fetchField();
- $cache[$item['link_path']] = entity_translation_node_supported_type($type);
- }
- }
- else {
- $cache[$item['link_path']] = FALSE;
- }
- }
- return $cache[$item['link_path']];
- }
- /**
- * Replace the menu item on the given node with a localized version.
- *
- * If the menu item is replaced by a different menu item from the translation
- * set, the original item is stored in $node->source_menu.
- *
- * @param $node
- * A node object, with a menu item ($node->menu).
- * @param $langcode
- * The language into which the menu item should be translated.
- */
- function entity_translation_i18n_menu_node_menu_item_translate($node, $langcode) {
- // Localization.
- if ($node->menu['language'] == LANGUAGE_NONE) {
- _i18n_menu_link_localize($node->menu, $langcode);
- // Update properties 'link_title' and 'options.attributes.title' which are
- // used for the node menu form; i18n_menu_link_localize only localizes
- // rendered properties 'title' and 'localized_options.attributes.title'.
- $node->menu['link_title'] = $node->menu['title'];
- $node->menu['options']['attributes']['title'] = isset($node->menu['localized_options']['attributes']['title']) ? $node->menu['localized_options']['attributes']['title'] : '';
- }
- // Translation sets.
- else {
- $menu = NULL;
- if (!empty($node->menu['i18n_tsid']) && $translation_set = i18n_menu_translation_load($node->menu['i18n_tsid'])) {
- // Load menu item from translation set.
- $menu = $translation_set->get_item($langcode);
- // Set parent_depth_limit (required on node forms).
- if (!empty($menu) && !isset($menu['parent_depth_limit'])) {
- $menu['parent_depth_limit'] = _menu_parent_depth_limit($menu);
- }
- // Make sure the menu item is not set to hidden; i18n_menu automatically
- // hides any menu items not matching the current interface language.
- if (!empty($menu)) {
- $menu['hidden'] = FALSE;
- }
- }
- // Replace the menu item with the translated version, or null if there is
- // no translated item. Store the original one in $node->source_menu.
- $node->source_menu = $node->menu;
- $node->menu = $menu;
- }
- }
- /**
- * Prepares the menu item attached to given entity for saving.
- *
- * - Ensures that different menu items attached to the entity and its
- * translations are stored within the same translation set.
- * - Sets missing default values, and cleans out null values.
- * - Sets the language of the menu item to given target language.
- *
- * @param $entity
- * Node object.
- * @param $langcode
- * Target language.
- */
- function entity_translation_i18n_menu_item_tset_prepare($entity, $langcode) {
- // Load or create a translation set.
- if (!empty($entity->source_menu)) {
- if (!empty($entity->source_menu['i18n_tsid'])) {
- $translation_set = i18n_translation_set_load($entity->source_menu['i18n_tsid']);
- }
- else {
- // Make sure that the source menu item does have a language assigned.
- if ($entity->source_menu['language'] == LANGUAGE_NONE) {
- $entity->source_menu['language'] = $entity->menu['entity_translation_handler']->getSourceLanguage();
- menu_link_save($entity->source_menu);
- }
- // Create new translation set.
- $translation_set = i18n_translation_set_build('menu_link')
- ->add_item($entity->source_menu);
- }
- $entity->menu['translation_set'] = $translation_set;
- }
- // Extract menu_name and pid from parent property.
- if (!empty($entity->menu['parent'])) {
- list($entity->menu['menu_name'], $entity->menu['plid']) = explode(':', $entity->menu['parent']);
- }
- // Remove null values.
- $entity->menu = array_filter($entity->menu);
- $entity->menu['language'] = $langcode;
- $entity->menu += array(
- 'description' => '',
- 'customized' => 1,
- );
- }
- /**
- * Implements hook_entity_translation_upgrade().
- */
- function entity_translation_i18n_menu_entity_translation_upgrade($node, $translation) {
- menu_node_prepare($node);
- menu_node_prepare($translation);
- if (!empty($node->menu['mlid']) && !empty($translation->menu['mlid'])) {
- $link = $node->menu;
- $link['link_title'] = $translation->menu['link_title'];
- $link['description'] = $translation->menu['description'];
- $link['entity_language'] = $translation->language;
- $link['language'] = LANGUAGE_NONE;
- menu_link_save($link, $node->menu);
- }
- }
- /**
- * Implements hook_entity_translation_delete().
- */
- function entity_translation_i18n_menu_entity_translation_delete($entity_type, $entity, $langcode) {
- // Make sure that we are working with an entity of type node.
- if ($entity_type != 'node') {
- return;
- }
- list($entity_id, , ) = entity_extract_ids($entity_type, $entity);
- // Clean-up all menu module links that point to this node.
- $result = db_select('menu_links', 'ml')
- ->fields('ml', array('mlid', 'language'))
- ->condition('link_path', 'node/' . $entity_id)
- ->condition('module', 'menu')
- ->execute()
- ->fetchAllAssoc('mlid');
- foreach ($result as $link) {
- // Delete all menu links matching the deleted language.
- if ($link->language == $langcode) {
- menu_link_delete($link->mlid);
- }
- // Delete string translations for all language-neutral menu items.
- if ($link->language == LANGUAGE_NONE) {
- $name = array('menu', 'item', $link->mlid);
- foreach (array('title', 'description') as $key) {
- $name[] = $key;
- $source = i18n_string_get_source($name);
- if(!empty($source->lid)) {
- db_delete('locales_target')
- ->condition('lid', $source->lid)
- ->condition('language', $langcode)
- ->execute();
- }
- }
- }
- }
- }
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