[Form] Add DefaultFormFactory for convenience usage outside of a DIC context.

src/Symfony/Component/Form/DefaultFormFactory.php

@@ -0,0 +1,98 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien.potencier@symfony-project.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\HttpFoundation\File\TemporaryStorage;
+use Symfony\Component\Validator\ValidatorInterface;
+use Symfony\Component\Form\FormFactoryInterface;
+use Symfony\Component\Form\Type;
+use Symfony\Component\Form\Type\FieldTypeInterface;
+use Symfony\Component\Form\Renderer\Theme\ThemeInterface;
+use Symfony\Component\Form\Type\Loader\TypeLoaderInterface;
+use Symfony\Component\Form\Type\Loader\DefaultTypeLoader;
+use Symfony\Component\Form\Type\AbstractFieldType;
+use Symfony\Component\Form\CsrfProvider\CsrfProviderInterface;
+use Symfony\Component\Form\CsrfProvider\DefaultCsrfProvider;
+use Doctrine\ORM\EntityManager;
+
+/**
+ * Default Form Factory simplifies the construction and usage of the form component in a non-dependency injection context.
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ */
+class DefaultFormFactory extends FormFactory
+{
+    /**
+     * Create a default form factory from as few inputs as necessary.
+     *
+     * NOTICE: Make the csrf secret and storage secret longer rather than shorter, but keep them constant across all requests!
+     *
+     * @param ValidatorInterface $validator
+     * @param string $csrfSecret
+     * @param string $storageSecret
+     * @param string $charset
+     * @param \Doctrine\ORM\EntityManager $entityManager
+     * @return DefaultFormFactory
+     */
+    public static function createDefault(ValidatorInterface $validator, $csrfSecret, $storageSecret, $charset = 'UTF-8', $entityManager = null)
+    {
+        $csrfProvider = new DefaultCsrfProvider($csrfSecret);
+        $tempStorage = new TemporaryStorage($storageSecret);
+        $defaultTheme = new PhpTheme($charset);
+        return self::create($defaultTheme, $validator, $csrfProvider, $tempStorage, $entityManager);
+    }
+
+    /**
+     * Factory method to simplify creation of a default form factory.
+     * 
+     * @param ThemeInterface $theme
+     * @param ValidatorInterface $validator
+     * @param CsrfProviderInterface $crsfProvider
+     * @param TemporaryStorage $tempStorage
+     * @param \Doctrine\ORM\EntityManager $entityManager
+     * @return DefaultFormFactory
+     */
+    public static function create(ThemeInterface $theme,
+            ValidatorInterface $validator,
+            CsrfProviderInterface $crsfProvider,
+            TemporaryStorage $tempStorage,
+            $entityManager = null)
+    {
+        $typeLoader = new DefaultTypeLoader();
+        $factory = new self($typeLoader);
+        $typeLoader->initialize($factory, $theme, $crsfProvider, $validator, $tempStorage, $entityManager);
+
+        return new self($typeLoader);
+    }
+
+    /**
+     * @var TypeLoaderInterface
+     */
+    private $typeLoader;
+
+    /**
+     * @param TypeLoaderInterface $typeLoader
+     */
+    public function __construct(TypeLoaderInterface $typeLoader)
+    {
+        $this->typeLoader = $typeLoader;
+        parent::__construct($typeLoader);
+    }
+
+    /**
+     * @param AbstractFieldType $config
+     */
+    public function addConfig(AbstractFieldType $config)
+    {
+        $this->typeLoader->addConfig($config);
+    }
+}