class RulesI18nStringObjectWrapper

class RulesI18nStringObjectWrapper extends i18n_string_object_wrapper {
    
    /**
     * Get translatable properties.
     */
    protected function build_properties() {
        $strings = parent::build_properties();
        $properties = array();
        // Also add in the configuration label, as the i18n String UI requires
        // a String to be available always.
        $properties['label'] = array(
            'title' => t('Configuration name'),
            'string' => $this->object->label,
        );
        $this->buildElementProperties($this->object, $properties);
        // Add in translations for all elements.
        foreach ($this->object
            ->elements() as $element) {
            $this->buildElementProperties($element, $properties);
        }
        $strings[$this->get_textgroup()]['rules_config'][$this->object->name] = $properties;
        return $strings;
    }
    
    /**
     * Adds in translatable properties of the given element.
     */
    protected function buildElementProperties($element, &$properties) {
        foreach ($element->pluginParameterInfo() as $name => $info) {
            // Add in all directly provided input variables.
            if (!empty($info['translatable']) && isset($element->settings[$name])) {
                // If its an array of textual values, translate each value on its own.
                if (is_array($element->settings[$name])) {
                    foreach ($element->settings[$name] as $i => $value) {
                        $properties[$element->elementId() . ':' . $name . ':' . $i] = array(
                            'title' => t('@plugin "@label" (id @id), @parameter, Value @delta', array(
                                '@plugin' => drupal_ucfirst($element->plugin()),
                                '@label' => $element->label(),
                                '@id' => $element->elementId(),
                                '@parameter' => $info['label'],
                                '@delta' => $i + 1,
                            )),
                            'string' => $value,
                        );
                    }
                }
                else {
                    $properties[$element->elementId() . ':' . $name] = array(
                        'title' => t('@plugin "@label" (id @id), @parameter', array(
                            '@plugin' => drupal_ucfirst($element->plugin()),
                            '@label' => $element->label(),
                            '@id' => $element->elementId(),
                            '@parameter' => $info['label'],
                        )),
                        'string' => $element->settings[$name],
                    );
                }
            }
        }
    }

}