HistoryListener

HistoryListener.php

<?php

namespace VojtechDobes\NetteAjax;

use Nette\Application\Application;
use Nette\Object

class HistoryListener extends Object
{

	/** @var Http\IRequest */
	private $httpRequest;

	/** @var IRouter */
	private $router;

	/** @var bool */
	private $forwardHasHappened = FALSE;
	
	/** @var bool */
	private $errorHasHappened = FALSE;

	/**
	 * @param  Http\IRequest
	 * @param  IRouter
	 */
	public function __construct(Http\IRequest $httpRequest, IRouter $router)
	{
		$this->httpRequest = $httpRequest;
		$this->router = $router;
	}

	public function register(Application $application)
	{
		$application->onRequest[] = array($this, 'onRequest');
		$application->onResponse[] = array($this, 'onResponse');
		$application->onError[] = array($this, 'onError');
	}

	public function onRequest($application, $request)
	{
		if (count($application->getRequests()) > 1) {
			$this->forwardHasHappened = TRUE;
		}
	}
	
	public function onError($application, $exception)
	{
		$this->errorHasHappened = TRUE;
	}

	public function onResponse($application, $response)
	{
		if (!$this->errorHasHappened && $response instanceof JsonResponse && ($payload = $response->getPayload()) instanceof \stdClass) {
			if (!$this->forwardHasHappened && isset($payload->redirect)) {
				$url = new Http\UrlScript($payload->redirect);
				$url->setScriptPath($this->httpRequest->url->scriptPath);
				$httpRequest = new Http\Request($url);

				if ($this->router->match($httpRequest) !== NULL) {
					$prop = new Property('Nette\Application\Application', 'httpRequest');
					$prop->setAccessible(TRUE);
					$prop->setValue($application, $httpRequest);

					$application->run();
					exit;
				}
			} elseif ($this->forwardHasHappened && !isset($payload->redirect)) {
				$payload->redirect = $application->getPresenter()->link('this');
			}
		}
	}

}