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vendor/symfony/form/ChoiceList/View/ChoiceGroupView.php

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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\Component\Form\ChoiceList\View;
+
+/**
+ * Represents a group of choices in templates.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ChoiceGroupView implements \IteratorAggregate
+{
+    /**
+     * The label of the group.
+     *
+     * @var string
+     */
+    public $label;
+
+    /**
+     * The choice views in the group.
+     *
+     * @var ChoiceGroupView[]|ChoiceView[]
+     */
+    public $choices;
+
+    /**
+     * Creates a new choice group view.
+     *
+     * @param string                         $label   The label of the group
+     * @param ChoiceGroupView[]|ChoiceView[] $choices The choice views in the
+     *                                                group.
+     */
+    public function __construct($label, array $choices = array())
+    {
+        $this->label = $label;
+        $this->choices = $choices;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return self[]|ChoiceView[]
+     */
+    public function getIterator()
+    {
+        return new \ArrayIterator($this->choices);
+    }
+}

vendor/symfony/form/ChoiceList/View/ChoiceListView.php

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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\Component\Form\ChoiceList\View;
+
+/**
+ * Represents a choice list in templates.
+ *
+ * A choice list contains choices and optionally preferred choices which are
+ * displayed in the very beginning of the list. Both choices and preferred
+ * choices may be grouped in {@link ChoiceGroupView} instances.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ChoiceListView
+{
+    /**
+     * The choices.
+     *
+     * @var ChoiceGroupView[]|ChoiceView[]
+     */
+    public $choices;
+
+    /**
+     * The preferred choices.
+     *
+     * @var ChoiceGroupView[]|ChoiceView[]
+     */
+    public $preferredChoices;
+
+    /**
+     * Creates a new choice list view.
+     *
+     * @param ChoiceGroupView[]|ChoiceView[] $choices          The choice views
+     * @param ChoiceGroupView[]|ChoiceView[] $preferredChoices The preferred
+     *                                                         choice views.
+     */
+    public function __construct(array $choices = array(), array $preferredChoices = array())
+    {
+        $this->choices = $choices;
+        $this->preferredChoices = $preferredChoices;
+    }
+
+    /**
+     * Returns whether a placeholder is in the choices.
+     *
+     * A placeholder must be the first child element, not be in a group and have an empty value.
+     *
+     * @return bool
+     */
+    public function hasPlaceholder()
+    {
+        if ($this->preferredChoices) {
+            $firstChoice = reset($this->preferredChoices);
+
+            return $firstChoice instanceof ChoiceView && '' === $firstChoice->value;
+        }
+
+        $firstChoice = reset($this->choices);
+
+        return $firstChoice instanceof ChoiceView && '' === $firstChoice->value;
+    }
+}

vendor/symfony/form/ChoiceList/View/ChoiceView.php

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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\Component\Form\ChoiceList\View;
+
+/**
+ * Represents a choice in templates.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ChoiceView
+{
+    /**
+     * The label displayed to humans.
+     *
+     * @var string
+     */
+    public $label;
+
+    /**
+     * The view representation of the choice.
+     *
+     * @var string
+     */
+    public $value;
+
+    /**
+     * The original choice value.
+     *
+     * @var mixed
+     */
+    public $data;
+
+    /**
+     * Additional attributes for the HTML tag.
+     *
+     * @var array
+     */
+    public $attr;
+
+    /**
+     * Creates a new choice view.
+     *
+     * @param mixed  $data  The original choice
+     * @param string $value The view representation of the choice
+     * @param string $label The label displayed to humans
+     * @param array  $attr  Additional attributes for the HTML tag
+     */
+    public function __construct($data, $value, $label, array $attr = array())
+    {
+        $this->data = $data;
+        $this->value = $value;
+        $this->label = $label;
+        $this->attr = $attr;
+    }
+}