HummingBirdAnimeClient/src/Ion/View.php

143 lines
2.7 KiB
PHP

<?php declare(strict_types=1);
/**
* Ion
*
* Building blocks for web development
*
* PHP version 7.2
*
* @package Ion
* @author Timothy J. Warren <tim@timshomepage.net>
* @copyright 2015 - 2019 Timothy J. Warren
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @version 3.0.0
* @link https://git.timshomepage.net/aviat/ion
*/
namespace Aviat\Ion;
use Psr\Http\Message\ResponseInterface;
use Aviat\Ion\Di\ContainerInterface;
use Aviat\Ion\Exception\DoubleRenderException;
/**
* Base view response class
*/
abstract class View
// partially
implements ViewInterface {
use Di\ContainerAware;
use StringWrapper;
/**
* HTTP response Object
*
* @var ResponseInterface
*/
public $response;
/**
* If the view has sent output via
* __toString or send method
*
* @var boolean
*/
protected $hasRendered = FALSE;
/**
* Constructor
*
* @param ContainerInterface $container
* @throws Di\Exception\ContainerException
* @throws Di\Exception\NotFoundException
*/
public function __construct(ContainerInterface $container)
{
$this->setContainer($container);
$this->response = $container->get('response');
}
/**
* Send output to client
*/
public function __destruct()
{
if ( ! $this->hasRendered)
{
$this->send();
}
}
/**
* Return rendered output as string. Renders the view,
* and any attempts to call again will result in a DoubleRenderException
*
* @throws DoubleRenderException
* @return string
*/
public function __toString(): string
{
if ($this->hasRendered)
{
throw new DoubleRenderException();
}
$this->hasRendered = TRUE;
return $this->getOutput();
}
/**
* Add an http header
*
* @param string $name
* @param string|string[] $value
* @throws \InvalidArgumentException
* @return ViewInterface
*/
public function addHeader(string $name, $value): ViewInterface
{
$this->response = $this->response->withHeader($name, $value);
return $this;
}
/**
* Set the output string
*
* @param mixed $string
* @throws \InvalidArgumentException
* @throws \RuntimeException
* @return ViewInterface
*/
public function setOutput($string): ViewInterface
{
$this->response->getBody()->write($string);
return $this;
}
/**
* Append additional output.
*
* @param string $string
* @throws \InvalidArgumentException
* @throws \RuntimeException
* @return ViewInterface
*/
public function appendOutput(string $string): ViewInterface
{
return $this->setOutput($string);
}
/**
* Get the current output as a string. Does not
* render view or send headers.
*
* @return string
*/
public function getOutput(): string
{
return (string)$this->response->getBody();
}
}
// End of View.php