1 files changed, 118 insertions, 0 deletions

diff --git a/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToBooleanArrayTransformer.php b/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToBooleanArrayTransformer.php
new file mode 100644
index 00000000..79b3f7ac
--- /dev/null
+++ b/vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataTransformer/ChoiceToBooleanArrayTransformer.php
@@ -0,0 +1,118 @@
+<?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\DataTransformer;
+
+use Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface;
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+
+/**
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ChoiceToBooleanArrayTransformer implements DataTransformerInterface
+{
+    private $choiceList;
+
+    private $placeholderPresent;
+
+    /**
+     * Constructor.
+     *
+     * @param ChoiceListInterface $choiceList
+     * @param Boolean             $placeholderPresent
+     */
+    public function __construct(ChoiceListInterface $choiceList, $placeholderPresent)
+    {
+        $this->choiceList = $choiceList;
+        $this->placeholderPresent = $placeholderPresent;
+    }
+
+    /**
+     * Transforms a single choice to a format appropriate for the nested
+     * checkboxes/radio buttons.
+     *
+     * The result is an array with the options as keys and true/false as values,
+     * depending on whether a given option is selected. If this field is rendered
+     * as select tag, the value is not modified.
+     *
+     * @param mixed $choice An array if "multiple" is set to true, a scalar
+     *                      value otherwise.
+     *
+     * @return mixed An array
+     *
+     * @throws TransformationFailedException If the given value is not scalar or
+     *                                       if the choices can not be retrieved.
+     */
+    public function transform($choice)
+    {
+        try {
+            $values = $this->choiceList->getValues();
+        } catch (\Exception $e) {
+            throw new TransformationFailedException('Can not get the choice list', $e->getCode(), $e);
+        }
+
+        $index = current($this->choiceList->getIndicesForChoices(array($choice)));
+
+        foreach ($values as $i => $value) {
+            $values[$i] = $i === $index;
+        }
+
+        if ($this->placeholderPresent) {
+            $values['placeholder'] = false === $index;
+        }
+
+        return $values;
+    }
+
+    /**
+     * Transforms a checkbox/radio button array to a single choice.
+     *
+     * The input value is an array with the choices as keys and true/false as
+     * values, depending on whether a given choice is selected. The output
+     * is the selected choice.
+     *
+     * @param array $values An array of values
+     *
+     * @return mixed A scalar value
+     *
+     * @throws TransformationFailedException If the given value is not an array,
+     *                                       if the recuperation of the choices
+     *                                       fails or if some choice can't be
+     *                                       found.
+     */
+    public function reverseTransform($values)
+    {
+        if (!is_array($values)) {
+            throw new TransformationFailedException('Expected an array.');
+        }
+
+        try {
+            $choices = $this->choiceList->getChoices();
+        } catch (\Exception $e) {
+            throw new TransformationFailedException('Can not get the choice list', $e->getCode(), $e);
+        }
+
+        foreach ($values as $i => $selected) {
+            if ($selected) {
+                if (isset($choices[$i])) {
+                    return $choices[$i] === '' ? null : $choices[$i];
+                } elseif ($this->placeholderPresent && 'placeholder' === $i) {
+                    return null;
+                } else {
+                    throw new TransformationFailedException(sprintf('The choice "%s" does not exist', $i));
+                }
+            }
+        }
+
+        return null;
+    }
+}