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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\Bridge\Twig\Extension; use Symfony\Bridge\Twig\TokenParser\FormThemeTokenParser; use Symfony\Bridge\Twig\Form\TwigRendererInterface; use Symfony\Component\Form\Extension\Core\View\ChoiceView; /** * FormExtension extends Twig with form capabilities. * * @author Fabien Potencier <fabien@symfony.com> * @author Bernhard Schussek <bschussek@gmail.com> */ class FormExtension extends \Twig_Extension { /** * This property is public so that it can be accessed directly from compiled * templates without having to call a getter, which slightly decreases performance. * * @var TwigRendererInterface */ public $renderer; public function __construct(TwigRendererInterface $renderer) { $this->renderer = $renderer; } /** * {@inheritdoc} */ public function initRuntime(\Twig_Environment $environment) { $this->renderer->setEnvironment($environment); } /** * {@inheritdoc} */ public function getTokenParsers() { return array( // {% form_theme form "SomeBundle::widgets.twig" %} new FormThemeTokenParser(), ); } /** * {@inheritdoc} */ public function getFunctions() { return array( 'form_enctype' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\FormEnctypeNode', array('is_safe' => array('html'))), 'form_widget' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))), 'form_errors' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))), 'form_label' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))), 'form_row' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))), 'form_rest' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', array('is_safe' => array('html'))), 'form' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))), 'form_start' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))), 'form_end' => new \Twig_Function_Node('Symfony\Bridge\Twig\Node\RenderBlockNode', array('is_safe' => array('html'))), 'csrf_token' => new \Twig_Function_Method($this, 'renderer->renderCsrfToken'), ); } /** * {@inheritdoc} */ public function getFilters() { return array( new \Twig_SimpleFilter('humanize', array($this->renderer, 'humanize')), ); } /** * {@inheritdoc} */ public function getTests() { return array( new \Twig_SimpleTest('selectedchoice', array($this, 'isSelectedChoice')), ); } /** * Returns whether a choice is selected for a given form value. * * Unfortunately Twig does not support an efficient way to execute the * "is_selected" closure passed to the template by ChoiceType. It is faster * to implement the logic here (around 65ms for a specific form). * * Directly implementing the logic here is also faster than doing so in * ChoiceView (around 30ms). * * The worst option tested so far is to implement the logic in ChoiceView * and access the ChoiceView method directly in the template. Doing so is * around 220ms slower than doing the method call here in the filter. Twig * seems to be much more efficient at executing filters than at executing * methods of an object. * * @param ChoiceView $choice The choice to check. * @param string|array $selectedValue The selected value to compare. * * @return Boolean Whether the choice is selected. * * @see ChoiceView::isSelected() */ public function isSelectedChoice(ChoiceView $choice, $selectedValue) { if (is_array($selectedValue)) { return false !== array_search($choice->value, $selectedValue, true); } return $choice->value === $selectedValue; } /** * {@inheritdoc} */ public function getName() { return 'form'; } }