class.ilADTBoolean.php

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<?php
 
declare(strict_types=1);
 
class ilADTBoolean extends ilADT
{
    protected ?bool $value;
 
    // definition
 
    protected function isValidDefinition(ilADTDefinition $a_def): bool
    {
        return ($a_def instanceof ilADTBooleanDefinition);
    }
 
    public function reset(): void
    {
        parent::reset();
        $this->value = null;
    }
 
    // properties
 
    public function setStatus(?bool $a_value = null): void
    {
        $this->value = $a_value;
    }
 
    public function getStatus(): ?bool
    {
        return $this->value;
    }
 
    // comparison
 
    public function equals(ilADT $a_adt): ?bool
    {
        if ($this->getDefinition()->isComparableTo($a_adt)) {
            return ($this->getStatus() === $a_adt->getStatus());
        }
        return null;
    }
 
    public function isLarger(ilADT $a_adt): ?bool
    {
        return null;
    }
 
    public function isSmaller(ilADT $a_adt): ?bool
    {
        return null;
    }
 
    // null
 
    public function isNull(): bool
    {
        return $this->getStatus() === null;
    }
 
    public function isValid(): bool
    {
        return true;
    }
 
    // check
 
    public function getCheckSum(): ?string
    {
        if (!$this->isNull()) {
            return (string) $this->getStatus();
        }
        return null;
    }
 
    // stdClass
 
    public function exportStdClass(): ?stdClass
    {
        if (!$this->isNull()) {
            $obj = new stdClass();
            $obj->value = $this->getStatus();
            return $obj;
        }
        return null;
    }
 
    public function importStdClass(?stdClass $a_std): void
    {
        if (is_object($a_std)) {
            $this->setStatus((bool) $a_std->value);
        }
    }
}