N°8771 - Add Symfony form component to iTop core (#760)

- Add Symfony Form Component
- Add Symfony CSRF security component
- Add iTop default form template
- Add Twig debug extension to Twig Environment
- Add iTop abstract controller facility to get form builder
- Add Twig filter to make trans an alias of dict_s filter

lib/symfony/form/Extension/DependencyInjection/DependencyInjectionExtension.php

@@ -0,0 +1,99 @@
+<?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\Extension\DependencyInjection;
+
+use Psr\Container\ContainerInterface;
+use Symfony\Component\Form\Exception\InvalidArgumentException;
+use Symfony\Component\Form\FormExtensionInterface;
+use Symfony\Component\Form\FormTypeExtensionInterface;
+use Symfony\Component\Form\FormTypeGuesserChain;
+use Symfony\Component\Form\FormTypeGuesserInterface;
+use Symfony\Component\Form\FormTypeInterface;
+
+class DependencyInjectionExtension implements FormExtensionInterface
+{
+    private ?FormTypeGuesserChain $guesser = null;
+    private bool $guesserLoaded = false;
+    private ContainerInterface $typeContainer;
+    private array $typeExtensionServices;
+    private iterable $guesserServices;
+
+    /**
+     * @param array<string, iterable<FormTypeExtensionInterface>> $typeExtensionServices
+     */
+    public function __construct(ContainerInterface $typeContainer, array $typeExtensionServices, iterable $guesserServices)
+    {
+        $this->typeContainer = $typeContainer;
+        $this->typeExtensionServices = $typeExtensionServices;
+        $this->guesserServices = $guesserServices;
+    }
+
+    public function getType(string $name): FormTypeInterface
+    {
+        if (!$this->typeContainer->has($name)) {
+            throw new InvalidArgumentException(\sprintf('The field type "%s" is not registered in the service container.', $name));
+        }
+
+        return $this->typeContainer->get($name);
+    }
+
+    public function hasType(string $name): bool
+    {
+        return $this->typeContainer->has($name);
+    }
+
+    public function getTypeExtensions(string $name): array
+    {
+        $extensions = [];
+
+        if (isset($this->typeExtensionServices[$name])) {
+            foreach ($this->typeExtensionServices[$name] as $extension) {
+                $extensions[] = $extension;
+
+                $extendedTypes = [];
+                foreach ($extension::getExtendedTypes() as $extendedType) {
+                    $extendedTypes[] = $extendedType;
+                }
+
+                // validate the result of getExtendedTypes() to ensure it is consistent with the service definition
+                if (!\in_array($name, $extendedTypes, true)) {
+                    throw new InvalidArgumentException(\sprintf('The extended type "%s" specified for the type extension class "%s" does not match any of the actual extended types (["%s"]).', $name, $extension::class, implode('", "', $extendedTypes)));
+                }
+            }
+        }
+
+        return $extensions;
+    }
+
+    public function hasTypeExtensions(string $name): bool
+    {
+        return isset($this->typeExtensionServices[$name]);
+    }
+
+    public function getTypeGuesser(): ?FormTypeGuesserInterface
+    {
+        if (!$this->guesserLoaded) {
+            $this->guesserLoaded = true;
+            $guessers = [];
+
+            foreach ($this->guesserServices as $serviceId => $service) {
+                $guessers[] = $service;
+            }
+
+            if ($guessers) {
+                $this->guesser = new FormTypeGuesserChain($guessers);
+            }
+        }
+
+        return $this->guesser;
+    }
+}