/**
* @param string rule
*
* @return string error message
*/
function error_message($rule)
{
if (self::$error_message_cache === null) {
$defaults = custom_body_class::defaults();
$default_errors = $defaults['errors'];
$plugin_errors = $this->meta->get('errors', array());
self::$error_message_cache = array_merge($default_errors, $plugin_errors);
}
return self::$error_message_cache[$rule];
}
/**
* Execute postupdate hooks on input.
*/
protected function postupdate($input)
{
$defaults = custom_body_class::defaults();
$plugin_hooks = $this->meta->get('processor', array('preupdate' => array(), 'postupdate' => array()));
// Calculate hooks
// ---------------
$hooks = array();
// check custom_body_class defaults
if (isset($defaults['processor']['postupdate'])) {
$hooks = $defaults['processor']['postupdate'];
}
// check plugin defaults
if (isset($plugin_hooks['postupdate'])) {
$hooks = array_merge($hooks, $plugin_hooks['postupdate']);
}
// Execute hooks
// -------------
foreach ($hooks as $rule) {
$callback = custom_body_class::callback($rule, $this->meta);
call_user_func($callback, $input, $this);
}
}
/**
* @param string callback key
*
* @return string callback function name
* @throws Exception
*/
static function callback($key, CustomBodyClassMeta $meta)
{
$defaults = custom_body_class::defaults();
$default_callbacks = $defaults['callbacks'];
$plugin_callbacks = $meta->get('callbacks', array());
$callbacks = array_merge($default_callbacks, $plugin_callbacks);
if (isset($callbacks[$key])) {
return $callbacks[$key];
} else {
// missing callback
throw new Exception('Missing callback for [' . $key . '].');
}
}