Language field in Bulk Tools

/**
 * Filter languages in bulk tools
 */
function pm_ignore_lang_posts($default_uri, $native_slug, $object, $slug, $native_uri) {
    global $permalink_manager_uris;

    // 1A. Do not use for native permalinks
    if(!empty($native_uri)) { return $default_uri; }

    // 1B. Use only for bulk tools!
    if(empty($_REQUEST['mode']) || $_REQUEST['mode'] !== 'custom_uris') { return $default_uri; }

    // 1C. Regenerate all items if no language is selected
    if(!empty($_REQUEST['languages']) && is_array($_REQUEST['languages'])) {
        $selected_languages = $_REQUEST['languages'];
    } else {
        return $default_uri;
    }

    // 2. Get language of post/term
    $language_code = Permalink_Manager_Language_Plugins::get_language_code($object);

    // 3. Get object ID
    if(!empty($object->ID)) {
        $object_id = $object->ID;
    } else if(!empty($object->term_taxonomy_id)) {
        $object_id = "tax-{$object->term_taxonomy_id}";
    } else {
        return $default_uri;
    }

    // 4. Restore old custom permalink if post/term has no language set or language is different than selected
    if((empty($language_code) || !in_array($language_code, $selected_languages))) {
        $default_uri = (!empty($permalink_manager_uris[$object_id])) ? $permalink_manager_uris[$object_id] : $default_uri;
    }

    return $default_uri;
}
add_filter('permalink_manager_filter_default_post_uri', 'pm_ignore_lang_posts', 99, 5);
add_filter('permalink_manager_filter_default_term_uri', 'pm_ignore_lang_posts', 99, 5);

/**
 * Add "Languages field"
 */
function pm_tools_language_field($fields) {
    $wpml_languages = apply_filters('wpml_active_languages', NULL, 'orderby=id&order=desc');

    if(!empty($wpml_languages)) {
        $all_languages = array();

        foreach($wpml_languages as $language) {
            $all_languages[$language['language_code']] = $language['translated_name'];
        }

        if(!empty($all_languages)) {
            $fields['languages'] = array(
                'label' => __( 'Select languages', 'permalink-manager' ),
                'type' => 'checkbox',
                'container' => 'row',
                'choices' => $all_languages,
                'select_all' => '',
                'unselect_all' => '',
            );
        }
    }

    return $fields;
}
add_filter('permalink_manager_tools_fields', 'pm_tools_language_field', 99);