<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/

/**
* Category form input image element
*
* @author Magento Core Team <core@magentocommerce.com>
*/
namespace Magento\Framework\Data\Form\Element;

use Magento\Framework\App\ObjectManager;
use Magento\Framework\Math\Random;
use Magento\Framework\UrlInterface;
use Magento\Framework\View\Helper\SecureHtmlRenderer;

class Image extends \Magento\Framework\Data\Form\Element\AbstractElement
{
/**
* @var UrlInterface
*/
protected $_urlBuilder;

/**
* @var SecureHtmlRenderer
*/
private $secureRenderer;

/**
* @var Random
*/
private $random;

/**
* @param Factory $factoryElement
* @param CollectionFactory $factoryCollection
* @param \Magento\Framework\Escaper $escaper
* @param UrlInterface $urlBuilder
* @param array $data
* @param SecureHtmlRenderer|null $secureRenderer
* @param Random|null $random
*/
public function __construct(
Factory $factoryElement,
CollectionFactory $factoryCollection,
\Magento\Framework\Escaper $escaper,
UrlInterface $urlBuilder,
$data = [],
?SecureHtmlRenderer $secureRenderer = null,
?Random $random = null
) {
$secureRenderer = $secureRenderer ?? ObjectManager::getInstance()->get(SecureHtmlRenderer::class);
$random = $random ?? ObjectManager::getInstance()->get(Random::class);
$this->_urlBuilder = $urlBuilder;
parent::__construct($factoryElement, $factoryCollection, $escaper, $data, $secureRenderer, $random);
$this->setType('file');
$this->secureRenderer = $secureRenderer;
$this->random = $random;
}

/**
* Return element html code
*
* @return string
*/
public function getElementHtml()
{
$html = '';

if ((string)$this->getValue()) {
$url = $this->_getUrl();

if (!preg_match("/^http\:\/\/|https\:\/\//", $url)) {
$url = $this->_urlBuilder->getBaseUrl(['_type' => UrlInterface::URL_TYPE_MEDIA]) . $url;
}

$linkId = 'linkId' .$this->random->getRandomString(8);
$html = '<a previewlinkid="' .$linkId .'" href="' .
$url .
'" ' .
$this->_getUiId(
'link'
) .
'>' .
'<img src="' .
$url .
'" id="' .
$this->getHtmlId() .
'_image" title="' .
$this->getValue() .
'"' .
' alt="' .
$this->getValue() .
'" height="22" width="22" class="small-image-preview v-middle" ' .
$this->_getUiId() .
' />' .
'</a> ';
$html .= $this->secureRenderer->renderEventListenerAsTag(
'onclick',
"imagePreview('{$this->getHtmlId()}_image');\nreturn false;",
"*[previewlinkid='{$linkId}']"
);
}
$this->setClass('input-file');
$html .= parent::getElementHtml();
$html .= $this->_getDeleteCheckbox();

return $html;
}

/**
* Return html code of delete checkbox element
*
* @return string
*/
protected function _getDeleteCheckbox()
{
$html = '';
if ($this->getValue()) {
$label = (string)new \Magento\Framework\Phrase('Delete Image');
$html .= '<span class="delete-image">';
$html .= '<input type="checkbox"' .
' name="' .
parent::getName() .
'[delete]" value="1" class="checkbox"' .
' id="' .
$this->getHtmlId() .
'_delete"' .
($this->getDisabled() ? ' disabled="disabled"' : '') .
'/>';
$html .= '<label for="' .
$this->getHtmlId() .
'_delete"' .
($this->getDisabled() ? ' class="disabled"' : '') .
'> ' .
$label .
'</label>';
$html .= $this->_getHiddenInput();
$html .= '</span>';
}

return $html;
}

/**
* Return html code of hidden element
*
* @return string
*/
protected function _getHiddenInput()
{
return '<input type="hidden" name="' . parent::getName() . '[value]" value="' . $this->getValue() . '" />';
}

/**
* Get image preview url
*
* @return string
*/
protected function _getUrl()
{
return $this->getValue();
}

/**
* Return name
*
* @return string
*/
public function getName()
{
return $this->getData('name');
}
}