/**
* Returns the global Event Dispatcher object, only creating it
* if it doesn't already exist.
*
* @return F0FUtilsObservableDispatcher The EventDispatcher object.
*/
public static function getInstance()
{
if (self::$instance === null) {
self::$instance = new static();
}
return self::$instance;
}
/**
* Method to allow derived classes to preprocess the form.
*
* @param F0FForm $form A F0FForm object.
* @param mixed &$data The data expected for the form.
* @param string $group The name of the plugin group to import (defaults to "content").
*
* @return void
*
* @see F0FFormField
* @since 2.0
* @throws Exception if there is an error in the form event.
*/
protected function preprocessForm(F0FForm &$form, &$data, $group = 'content')
{
// Import the appropriate plugin group.
F0FPlatform::getInstance()->importPlugin($group);
// Trigger the form preparation event.
$results = F0FPlatform::getInstance()->runPlugins('onContentPrepareForm', array($form, $data));
// Check for errors encountered while preparing the form.
if (count($results) && in_array(false, $results, true)) {
// Get the last error.
$dispatcher = F0FUtilsObservableDispatcher::getInstance();
$error = $dispatcher->getError();
if (!$error instanceof Exception) {
throw new Exception($error);
}
}
}
