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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form;
use Symfony\Component\Form\Exception\ExceptionInterface;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
use Symfony\Component\Form\Exception\InvalidArgumentException;
/**
* The central registry of the Form component.
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class FormRegistry implements FormRegistryInterface
{
/**
* Extensions
*
* @var FormExtensionInterface[] An array of FormExtensionInterface
*/
private $extensions = array();
/**
* @var array
*/
private $types = array();
/**
* @var FormTypeGuesserInterface|false|null
*/
private $guesser = false;
/**
* @var ResolvedFormTypeFactoryInterface
*/
private $resolvedTypeFactory;
/**
* Constructor.
*
* @param FormExtensionInterface[] $extensions An array of FormExtensionInterface
* @param ResolvedFormTypeFactoryInterface $resolvedTypeFactory The factory for resolved form types.
*
* @throws UnexpectedTypeException if any extension does not implement FormExtensionInterface
*/
public function __construct(array $extensions, ResolvedFormTypeFactoryInterface $resolvedTypeFactory)
{
foreach ($extensions as $extension) {
if (!$extension instanceof FormExtensionInterface) {
throw new UnexpectedTypeException($extension, 'Symfony\Component\Form\FormExtensionInterface');
}
}
$this->extensions = $extensions;
$this->resolvedTypeFactory = $resolvedTypeFactory;
}
/**
* {@inheritdoc}
*/
public function getType($name)
{
if (!is_string($name)) {
throw new UnexpectedTypeException($name, 'string');
}
if (!isset($this->types[$name])) {
/** @var FormTypeInterface $type */
$type = null;
foreach ($this->extensions as $extension) {
/* @var FormExtensionInterface $extension */
if ($extension->hasType($name)) {
$type = $extension->getType($name);
break;
}
}
if (!$type) {
throw new InvalidArgumentException(sprintf('Could not load type "%s"', $name));
}
$this->resolveAndAddType($type);
}
return $this->types[$name];
}
/**
* Wraps a type into a ResolvedFormTypeInterface implementation and connects
* it with its parent type.
*
* @param FormTypeInterface $type The type to resolve.
*
* @return ResolvedFormTypeInterface The resolved type.
*/
private function resolveAndAddType(FormTypeInterface $type)
{
$parentType = $type->getParent();
if ($parentType instanceof FormTypeInterface) {
$this->resolveAndAddType($parentType);
$parentType = $parentType->getName();
}
$typeExtensions = array();
foreach ($this->extensions as $extension) {
/* @var FormExtensionInterface $extension */
$typeExtensions = array_merge(
$typeExtensions,
$extension->getTypeExtensions($type->getName())
);
}
$this->types[$type->getName()] = $this->resolvedTypeFactory->createResolvedType(
$type,
$typeExtensions,
$parentType ? $this->getType($parentType) : null
);
}
/**
* {@inheritdoc}
*/
public function hasType($name)
{
if (isset($this->types[$name])) {
return true;
}
try {
$this->getType($name);
} catch (ExceptionInterface $e) {
return false;
}
return true;
}
/**
* {@inheritdoc}
*/
public function getTypeGuesser()
{
if (false === $this->guesser) {
$guessers = array();
foreach ($this->extensions as $extension) {
/* @var FormExtensionInterface $extension */
$guesser = $extension->getTypeGuesser();
if ($guesser) {
$guessers[] = $guesser;
}
}
$this->guesser = !empty($guessers) ? new FormTypeGuesserChain($guessers) : null;
}
return $this->guesser;
}
/**
* {@inheritdoc}
*/
public function getExtensions()
{
return $this->extensions;
}
}
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