Textarea.php

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<?php

/* Copyright (c) 2017 Jesús lópez <lopez@leifos.com> Extended GPL, see docs/LICENSE */

namespace ILIAS\UI\Implementation\Component\Input\Field;

use ILIAS\UI\Component as C;
use ILIAS\UI\Component\Signal;
use ILIAS\UI\Implementation\Component\JavaScriptBindable;
use ILIAS\Data\Factory as DataFactory;

class Textarea extends Input implements C\Input\Field\Textarea
{
    use JavaScriptBindable;

    protected $max_limit;
    protected $min_limit;

    public function __construct(
        DataFactory $data_factory,
        \ILIAS\Refinery\Factory $refinery,
        $label,
        $byline
    ) {
        parent::__construct($data_factory, $refinery, $label, $byline);
        $this->setAdditionalTransformation(
            $refinery->string()->stripTags()
        );
    }

    public function withMaxLimit($max_limit)
    {
        $clone = $this->withAdditionalTransformation(
            $this->refinery->string()->hasMaxLength($max_limit)
        );
        $clone->max_limit = $max_limit;
        return $clone;
    }

    public function getMaxLimit()
    {
        return $this->max_limit;
    }

    public function withMinLimit($min_limit)
    {
        $clone = $this->withAdditionalTransformation(
            $this->refinery->string()->hasMinLength($min_limit)
        );
        $clone->min_limit = $min_limit;
        return $clone;
    }

    public function getMinLimit()
    {
        return $this->min_limit;
    }

    protected function isClientSideValueOk($value) : bool
    {
        return is_string($value);
    }


    protected function getConstraintForRequirement()
    {
        if ($this->min_limit) {
            return $this->refinery->string()->hasMinLength($this->min_limit);
        }
        return $this->refinery->string()->hasMinLength(1);
    }

    public function isLimited()
    {
        if ($this->min_limit || $this->max_limit) {
            return true;
        }
        return false;
    }

    public function getUpdateOnLoadCode() : \Closure
    {
        return function ($id) {
            $code = "$('#$id').on('input', function(event) {
                                il.UI.input.onFieldUpdate(event, '$id', $('#$id').val());
                        });
                        il.UI.input.onFieldUpdate(event, '$id', $('#$id').val());";
            return $code;
        };
    }
}