Checkbox.php

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<?php
 
/* Copyright (c) 2017 Timon Amstutz <timon.amstutz@ilub.unibe.ch> Extended GPL, see
docs/LICENSE */
 
namespace ILIAS\UI\Implementation\Component\Input\Field;
 
use ILIAS\Data\Factory as DataFactory;
use ILIAS\UI\Component as C;
use ILIAS\Validation\Factory as ValidationFactory;
use ILIAS\Transformation\Factory as TransformationFactory;
use ILIAS\UI\Implementation\Component\JavaScriptBindable;
use ILIAS\UI\Implementation\Component\Triggerer;
use ILIAS\UI\Implementation\Component\Input\PostData;
 
class Checkbox extends Input implements C\Input\Field\Checkbox, C\Changeable, C\Onloadable
{
    use JavaScriptBindable;
    use Triggerer;
    use DependantGroupHelper;
 
 
    protected function getConstraintForRequirement()
    {
        return null;
    }
 
    protected function isClientSideValueOk($value)
    {
        if ($value == "checked" || $value === "" || is_bool($value)) {
            return true;
        } else {
            return false;
        }
    }
 
 
    public function withValue($value)
    {
        //be lenient to bool params for easier use
        if ($value === true) {
            $value = "checked";
        } else {
            if ($value === false) {
                $value = "";
            }
        }
 
        return parent::withValue($value);
    }
 
 
    public function withInput(PostData $post_input)
    {
        if ($this->getName() === null) {
            throw new \LogicException("Can only collect if input has a name.");
        }
 
        $value = $post_input->getOr($this->getName(), "");
        $clone = $this->withValue($value);
        $clone->content = $this->applyOperationsTo($value);
        if ($clone->content->isError()) {
            return $clone->withError("" . $clone->content->error());
        }
 
        $clone = $clone->withGroupInput($post_input);
 
        return $clone;
    }
}