/**
* {@inheritdoc}
*/
public function calculate(ShippingSubjectInterface $subject)
{
if (null === ($method = $subject->getMethod())) {
throw new UndefinedShippingMethodException('Cannot calculate charge for shipping subject without defined shipping method.');
}
$calculator = $this->registry->getCalculator($method->getCalculator());
return $calculator->calculate($subject, $method->getConfiguration());
}
/**
* {@inheritdoc}
*/
public function buildView(FormView $view, FormInterface $form, array $options)
{
$subject = $options['subject'];
$shippingCosts = array();
foreach ($view->vars['choices'] as $choiceView) {
$method = $choiceView->data;
if (!$method instanceof ShippingMethodInterface) {
throw new UnexpectedTypeException($method, 'ShippingMethodInterface');
}
$calculator = $this->calculators->getCalculator($method->getCalculator());
$shippingCosts[$choiceView->value] = $calculator->calculate($subject, $method->getConfiguration());
}
$view->vars['shipping_costs'] = $shippingCosts;
}
/**
* Add the calculator configuration fields.
*
* @param FormInterface $form
* @param string $calculatorName
* @param array $data
*/
protected function addConfigurationFields(FormInterface $form, $calculatorName, array $data = array())
{
$calculator = $this->calculatorRegistry->getCalculator($calculatorName);
if (!$calculator->isConfigurable()) {
return;
}
$configurationField = $this->factory->createNamed('configuration', $calculator->getConfigurationFormType(), $data, array('auto_initialize' => false));
$form->add($configurationField);
}
