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File Path : /home/webmaster/firofichi/www/vendor/magento/framework/Data/Form.php
<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Framework\Data;

use Magento\Framework\Data\Form\Element\AbstractElement;
use Magento\Framework\Data\Form\Element\Collection as ElementCollection;
use Magento\Framework\Data\Form\Element\CollectionFactory as ElementCollectionFactory;
use Magento\Framework\Data\Form\Element\Factory;
use Magento\Framework\Data\Form\Element\Renderer\RendererInterface;
use Magento\Framework\Data\Form\FormKey;
use Magento\Framework\Profiler;

/**
 * @api
 * @since 100.0.2
 */
class Form extends \Magento\Framework\Data\Form\AbstractForm
{
    /**
     * All form elements collection
     *
     * @var ElementCollection
     */
    protected $_allElements;

    /**
     * form elements index
     *
     * @var array
     */
    protected $_elementsIndex;

    /**
     * @var FormKey
     */
    protected $formKey;

    /**
     * @var RendererInterface
     */
    protected static $_defaultElementRenderer;

    /**
     * @var RendererInterface
     */
    protected static $_defaultFieldsetRenderer;

    /**
     * @var RendererInterface
     */
    protected static $_defaultFieldsetElementRenderer;

    /**
     * @param Factory $factoryElement
     * @param ElementCollectionFactory $factoryCollection
     * @param FormKey $formKey
     * @param array $data
     */
    public function __construct(
        Factory $factoryElement,
        ElementCollectionFactory $factoryCollection,
        FormKey $formKey,
        $data = []
    ) {
        parent::__construct($factoryElement, $factoryCollection, $data);
        $this->_allElements = $this->_factoryCollection->create(['container' => $this]);
        $this->formKey = $formKey;
    }

    /**
     * @param RendererInterface $renderer
     * @return void
     */
    public static function setElementRenderer(RendererInterface $renderer = null)
    {
        self::$_defaultElementRenderer = $renderer;
    }

    /**
     * @param RendererInterface $renderer
     * @return void
     */
    public static function setFieldsetRenderer(RendererInterface $renderer = null)
    {
        self::$_defaultFieldsetRenderer = $renderer;
    }

    /**
     * @param RendererInterface $renderer
     * @return void
     */
    public static function setFieldsetElementRenderer(RendererInterface $renderer = null)
    {
        self::$_defaultFieldsetElementRenderer = $renderer;
    }

    /**
     * @return RendererInterface
     */
    public static function getElementRenderer()
    {
        return self::$_defaultElementRenderer;
    }

    /**
     * @return RendererInterface
     */
    public static function getFieldsetRenderer()
    {
        return self::$_defaultFieldsetRenderer;
    }

    /**
     * @return RendererInterface
     */
    public static function getFieldsetElementRenderer()
    {
        return self::$_defaultFieldsetElementRenderer;
    }

    /**
     * Return allowed HTML form attributes
     *
     * @return string[]
     */
    public function getHtmlAttributes()
    {
        return ['id', 'name', 'method', 'action', 'enctype', 'class', 'onsubmit', 'target'];
    }

    /**
     * Add form element
     *
     * @param AbstractElement $element
     * @param bool $after
     * @return $this
     */
    public function addElement(AbstractElement $element, $after = false)
    {
        $this->checkElementId($element->getId());
        parent::addElement($element, $after);
        $this->addElementToCollection($element);
        return $this;
    }

    /**
     * Check existing element
     *
     * @param   string $elementId
     * @return  bool
     */
    protected function _elementIdExists($elementId)
    {
        return isset($this->_elementsIndex[$elementId]);
    }

    /**
     * @param AbstractElement $element
     * @return $this
     */
    public function addElementToCollection($element)
    {
        $this->_elementsIndex[$element->getId()] = $element;
        $this->_allElements->add($element);
        return $this;
    }

    /**
     * @param string $elementId
     * @return bool
     * @throws \Exception
     */
    public function checkElementId($elementId)
    {
        if ($this->_elementIdExists($elementId)) {
            throw new \InvalidArgumentException(
                'An element with a "' . $elementId . '" ID already exists.'
            );
        }
        return true;
    }

    /**
     * @return $this
     */
    public function getForm()
    {
        return $this;
    }

    /**
     * Retrieve form element by id
     *
     * @param string $elementId
     * @return null|AbstractElement
     */
    public function getElement($elementId)
    {
        if ($this->_elementIdExists($elementId)) {
            return $this->_elementsIndex[$elementId];
        }
        return null;
    }

    /**
     * @param array $values
     * @return $this
     */
    public function setValues($values)
    {
        foreach ($this->_allElements as $element) {
            if (isset($values[$element->getId()])) {
                $element->setValue($values[$element->getId()]);
            } else {
                $element->setValue(null);
            }
        }
        return $this;
    }

    /**
     * @param array $values
     * @return $this
     */
    public function addValues($values)
    {
        if (!is_array($values)) {
            return $this;
        }
        foreach ($values as $elementId => $value) {
            $element = $this->getElement($elementId);
            if ($element) {
                $element->setValue($value);
            }
        }
        return $this;
    }

    /**
     * Add suffix to name of all elements
     *
     * @param string $suffix
     * @return $this
     */
    public function addFieldNameSuffix($suffix)
    {
        foreach ($this->_allElements as $element) {
            $name = $element->getName();
            if ($name) {
                $element->setName($this->addSuffixToName($name, $suffix));
            }
        }
        return $this;
    }

    /**
     * @param string $name
     * @param string $suffix
     * @return string
     */
    public function addSuffixToName($name, $suffix)
    {
        if (!$name) {
            return $suffix;
        }
        $vars = explode('[', $name);
        $newName = $suffix;
        foreach ($vars as $index => $value) {
            $newName .= '[' . $value;
            if ($index == 0) {
                $newName .= ']';
            }
        }
        return $newName;
    }

    /**
     * @param string $elementId
     * @return $this
     */
    public function removeField($elementId)
    {
        if ($this->_elementIdExists($elementId)) {
            unset($this->_elementsIndex[$elementId]);
        }
        return $this;
    }

    /**
     * @param string $prefix
     * @return $this
     */
    public function setFieldContainerIdPrefix($prefix)
    {
        $this->setData('field_container_id_prefix', $prefix);
        return $this;
    }

    /**
     * @return string
     */
    public function getFieldContainerIdPrefix()
    {
        return $this->getData('field_container_id_prefix');
    }

    /**
     * @return string
     */
    public function toHtml()
    {
        Profiler::start('form/toHtml');
        $html = '';
        $useContainer = $this->getUseContainer();
        if ($useContainer) {
            $html .= '<form ' . $this->serialize($this->getHtmlAttributes()) . '>';
            $html .= '<div>';
            if (strtolower($this->getData('method')) == 'post') {
                $html .= '<input name="form_key" type="hidden" value="' . $this->formKey->getFormKey() . '" />';
            }
            $html .= '</div>';
        }

        foreach ($this->getElements() as $element) {
            $html .= $element->toHtml();
        }

        if ($useContainer) {
            $html .= '</form>';
        }
        Profiler::stop('form/toHtml');
        return $html;
    }

    /**
     * @return string
     */
    public function getHtml()
    {
        return $this->toHtml();
    }
}