Source of file MergeCollectionListener.php
Size: 4,242 Bytes - Last Modified: 2013-07-17T08:22:21+02:00
/home/theseer/Downloads/Symfony/vendor/symfony/symfony/src/Symfony/Component/Form/Extension/Core/EventListener/MergeCollectionListener.php
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138 | <?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\Core\EventListener; use Symfony\Component\EventDispatcher\EventSubscriberInterface; use Symfony\Component\Form\FormEvents; use Symfony\Component\Form\FormEvent; use Symfony\Component\Form\Exception\UnexpectedTypeException; /** * @author Bernhard Schussek <bschussek@gmail.com> */ class MergeCollectionListener implements EventSubscriberInterface { /** * Whether elements may be added to the collection * @var Boolean */ private $allowAdd; /** * Whether elements may be removed from the collection * @var Boolean */ private $allowDelete; /** * Creates a new listener. * * @param Boolean $allowAdd Whether values might be added to the * collection. * @param Boolean $allowDelete Whether values might be removed from the * collection. */ public function __construct($allowAdd = false, $allowDelete = false) { $this->allowAdd = $allowAdd; $this->allowDelete = $allowDelete; } public static function getSubscribedEvents() { return array( FormEvents::SUBMIT => 'onSubmit', ); } public function onSubmit(FormEvent $event) { $dataToMergeInto = $event->getForm()->getNormData(); $data = $event->getData(); if (null === $data) { $data = array(); } if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) { throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)'); } if (null !== $dataToMergeInto && !is_array($dataToMergeInto) && !($dataToMergeInto instanceof \Traversable && $dataToMergeInto instanceof \ArrayAccess)) { throw new UnexpectedTypeException($dataToMergeInto, 'array or (\Traversable and \ArrayAccess)'); } // If we are not allowed to change anything, return immediately if ((!$this->allowAdd && !$this->allowDelete) || $data === $dataToMergeInto) { $event->setData($dataToMergeInto); return; } if (!$dataToMergeInto) { // No original data was set. Set it if allowed if ($this->allowAdd) { $dataToMergeInto = $data; } } else { // Calculate delta $itemsToAdd = is_object($data) ? clone $data : $data; $itemsToDelete = array(); foreach ($dataToMergeInto as $beforeKey => $beforeItem) { foreach ($data as $afterKey => $afterItem) { if ($afterItem === $beforeItem) { // Item found, next original item unset($itemsToAdd[$afterKey]); continue 2; } } // Item not found, remember for deletion $itemsToDelete[] = $beforeKey; } // Remove deleted items before adding to free keys that are to be // replaced if ($this->allowDelete) { foreach ($itemsToDelete as $key) { unset($dataToMergeInto[$key]); } } // Add remaining items if ($this->allowAdd) { foreach ($itemsToAdd as $key => $item) { if (!isset($dataToMergeInto[$key])) { $dataToMergeInto[$key] = $item; } else { $dataToMergeInto[] = $item; } } } } $event->setData($dataToMergeInto); } /** * Alias of {@link onSubmit()}. * * @deprecated Deprecated since version 2.3, to be removed in 3.0. Use * {@link onSubmit()} instead. */ public function onBind(FormEvent $event) { $this->onSubmit($event); } } |