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

namespace Magento\Config\Block\System\Config\Form;

use Magento\Framework\App\ObjectManager;
use Magento\Backend\Block\Template\Context;
use Magento\Framework\View\Helper\SecureHtmlRenderer;

/**
 * Render field html element in Stores Configuration
 *
 * @api
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 * @SuppressWarnings(PHPMD.NumberOfChildren)
 * @since 100.0.2
 */
class Field extends \Magento\Backend\Block\Template implements
    \Magento\Framework\Data\Form\Element\Renderer\RendererInterface
{
    /**
     * @var SecureHtmlRenderer
     */
    private $secureRenderer;

    /**
     * @param Context $context
     * @param array $data
     * @param SecureHtmlRenderer|null $secureRenderer
     */
    public function __construct(
        Context $context,
        array $data = [],
        ?SecureHtmlRenderer $secureRenderer = null
    ) {
        parent::__construct($context, $data);
        $this->secureRenderer = $secureRenderer ?? ObjectManager::getInstance()->get(SecureHtmlRenderer::class);
    }

    /**
     * Retrieve element HTML markup
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _getElementHtml(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        return $element->getElementHtml();
    }

    /**
     * Retrieve HTML markup for given form element
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    public function render(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        $isCheckboxRequired = $this->_isInheritCheckboxRequired($element);

        // Disable element if value is inherited from other scope. Flag has to be set before the value is rendered.
        if ($element->getInherit() == 1 && $isCheckboxRequired) {
            $element->setDisabled(true);
        }

        if ($element->getIsDisableInheritance()) {
            $element->setReadonly(true);
        }

        $html = '<td class="label"><label for="' .
            $element->getHtmlId() . '"><span' .
            $this->_renderScopeLabel($element) . '>' .
            $element->getLabel() .
            '</span></label></td>';
        $html .= $this->_renderValue($element);

        if ($isCheckboxRequired) {
            $html .= $this->_renderInheritCheckbox($element);
        }

        $html .= $this->_renderHint($element);

        return $this->_decorateRowHtml($element, $html);
    }

    /**
     * Render element value
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _renderValue(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        if ($element->getTooltip()) {
            $html = '<td class="value with-tooltip">';
            $html .= $this->_getElementHtml($element);
            $html .= '<div class="tooltip"><span class="help"><span></span></span>';
            $html .= '<div class="tooltip-content">' . $element->getTooltip() . '</div></div>';
        } else {
            $html = '<td class="value">';
            $html .= $this->_getElementHtml($element);
        }
        if ($element->getComment()) {
            $html .= '<p class="note"><span>' . $element->getComment() . '</span></p>';
        }
        $html .= '</td>';
        return $html;
    }

    /**
     * Render inheritance checkbox (Use Default or Use Website)
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _renderInheritCheckbox(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        $htmlId = $element->getHtmlId();
        $namePrefix = preg_replace('#\[value\](\[\])?$#', '', $element->getName());
        $checkedHtml = $element->getInherit() == 1 ? 'checked="checked"' : '';
        $disabled = $element->getIsDisableInheritance() == true ? ' disabled="disabled" readonly="1"' : '';

        $html = '<td class="use-default">';
        $html .= '<input id="' .
            $htmlId .
            '_inherit" name="' .
            $namePrefix .
            '[inherit]" type="checkbox" value="1"' .
            ' class="checkbox config-inherit" ' .
            $checkedHtml . $disabled .
            ' />';
        $html .= /* @noEscape */ $this->secureRenderer->renderEventListenerAsTag(
            'onclick',
            "toggleValueElements(this, Element.previous(this.parentNode))",
            'input#' . $htmlId . '_inherit'
        );
        $html .= '<label for="' . $htmlId . '_inherit" class="inherit">' . $this->_getInheritCheckboxLabel(
            $element
        ) . '</label>';
        $html .= '</td>';

        return $html;
    }

    /**
     * Check if inheritance checkbox has to be rendered
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return bool
     */
    protected function _isInheritCheckboxRequired(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        return $element->getCanUseWebsiteValue()
            || $element->getCanUseDefaultValue()
            || $element->getCanRestoreToDefault();
    }

    /**
     * Retrieve label for the inheritance checkbox
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _getInheritCheckboxLabel(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        $checkboxLabel = __('Use system value');
        if ($element->getCanUseDefaultValue()) {
            $checkboxLabel = __('Use Default');
        }
        if ($element->getCanUseWebsiteValue()) {
            $checkboxLabel = __('Use Website');
        }
        return $checkboxLabel;
    }

    /**
     * Render scope label
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _renderScopeLabel(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        $scopeString = '';
        if ($element->getScope() && false == $this->_storeManager->isSingleStoreMode()) {
            $scopeString .= ' data-config-scope="' . $element->getScopeLabel() . '"';
        }

        return $scopeString;
    }

    /**
     * Render field hint
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @return string
     */
    protected function _renderHint(\Magento\Framework\Data\Form\Element\AbstractElement $element)
    {
        $html = '<td class="">';
        if ($element->getHint()) {
            $html .= '<div class="hint"><div id="hint_' . $element->getHtmlId() . '">' .
                $element->getHint() . '</div></div>';
            $html .= /* @noEscape */ $this->secureRenderer->renderStyleAsTag(
                "display: none;",
                'div#hint_' . $element->getHtmlId()
            );
        }
        $html .= '</td>';
        return $html;
    }

    /**
     * Decorate field row html
     *
     * @param \Magento\Framework\Data\Form\Element\AbstractElement $element
     * @param string $html
     * @return string
     */
    protected function _decorateRowHtml(\Magento\Framework\Data\Form\Element\AbstractElement $element, $html)
    {
        return '<tr id="row_' . $element->getHtmlId() . '">' . $html . '</tr>';
    }
}