private function _check_renderer()
{
if (!isset($this->renderer['class'])) {
return false;
}
$this->_renderer_callback_class = $this->renderer['class'];
$this->_renderer_callback_args = array();
if (isset($this->renderer['args']) && !empty($this->renderer['args'])) {
$this->_renderer_callback_args = $this->renderer['args'];
}
if (!class_exists($this->_renderer_callback_class)) {
// Try auto-load.
$path = MIDCOM_ROOT . '/' . str_replace('_', '/', $this->_renderer_callback_class) . '.php';
if (!file_exists($path)) {
debug_add("Auto-loading of the renderer callback class {$this->_renderer_callback_class} from {$path} failed: File does not exist.", MIDCOM_LOG_ERROR);
return false;
}
require_once $path;
}
if (!class_exists($this->_renderer_callback_class)) {
debug_add("The renderer callback class {$this->_renderer_callback_class} was defined as option for the field {$this->name} but did not exist.", MIDCOM_LOG_ERROR);
return false;
}
$this->_renderer_callback = new $this->_renderer_callback_class($this->_renderer_callback_args);
return $this->_renderer_callback->initialize();
}
