Wrapline.php

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<?php
namespace Magento\Backend\Block\Widget\Grid\Column\Renderer;

class Wrapline extends \Magento\Backend\Block\Widget\Grid\Column\Renderer\AbstractRenderer
{
    protected $_defaultMaxLineLength = 60;

    protected $string;

    public function __construct(
        \Magento\Backend\Block\Context $context,
        \Magento\Framework\Stdlib\StringUtils $string,
        array $data = []
    ) {
        $this->string = $string;
        parent::__construct($context, $data);
    }

    public function render(\Magento\Framework\DataObject $row)
    {
        $line = parent::_getValue($row);
        $wrappedLine = '';
        $lineLength = $this->getColumn()->getData(
            'lineLength'
        ) ? $this->getColumn()->getData(
            'lineLength'
        ) : $this->_defaultMaxLineLength;
        for ($i = 0, $n = floor($this->string->strlen($line) / $lineLength); $i <= $n; $i++) {
            $wrappedLine .= $this->string->substr($line, $lineLength * $i, $lineLength) . "<br />";
        }
        return $wrappedLine;
    }
}