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<?php
/*
* (c) Jeroen van den Enden <info@endroid.nl>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
namespace Endroid\QrCode;
use Endroid\QrCode\Exception\InvalidWriterException;
use Endroid\QrCode\Writer\WriterInterface;
class WriterRegistry implements WriterRegistryInterface
{
/**
* @var WriterInterface[]
*/
protected $writers;
/**
* @var WriterInterface
*/
protected $defaultWriter;
public function __construct()
{
$this->writers = [];
}
/**
* {@inheritdoc}
*/
public function addWriter(WriterInterface $writer, $setAsDefault = false)
{
$this->writers[$writer->getName()] = $writer;
if ($setAsDefault || 1 === count($this->writers)) {
$this->defaultWriter = $writer;
}
}
/**
* @param $name
*
* @return WriterInterface
*/
public function getWriter($name)
{
$this->assertValidWriter($name);
return $this->writers[$name];
}
/**
* @return WriterInterface
*
* @throws InvalidWriterException
*/
public function getDefaultWriter()
{
if ($this->defaultWriter instanceof WriterInterface) {
return $this->defaultWriter;
}
throw new InvalidWriterException('Please set the default writer via the second argument of addWriter');
}
/**
* @return WriterInterface[]
*/
public function getWriters()
{
return $this->writers;
}
/**
* @param string $writer
*
* @throws InvalidWriterException
*/
protected function assertValidWriter($writer)
{
if (!isset($this->writers[$writer])) {
throw new InvalidWriterException('Invalid writer "'.$writer.'"');
}
}
}