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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  */
 11: 
 12: namespace Nette\Application;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * Front Controller.
 20:  *
 21:  * @author     David Grudl
 22:  *
 23:  * @property-read array $requests
 24:  * @property-read IPresenter $presenter
 25:  * @property-read IRouter $router
 26:  * @property-read IPresenterFactory $presenterFactory
 27:  */
 28: class Application extends Nette\Object
 29: {
 30:     /** @var int */
 31:     public static $maxLoop = 20;
 32: 
 33:     /** @var bool enable fault barrier? */
 34:     public $catchExceptions;
 35: 
 36:     /** @var string */
 37:     public $errorPresenter;
 38: 
 39:     /** @var array of function(Application $sender); Occurs before the application loads presenter */
 40:     public $onStartup;
 41: 
 42:     /** @var array of function(Application $sender, \Exception $e = NULL); Occurs before the application shuts down */
 43:     public $onShutdown;
 44: 
 45:     /** @var array of function(Application $sender, Request $request); Occurs when a new request is received */
 46:     public $onRequest;
 47: 
 48:     /** @var array of function(Application $sender, IResponse $response); Occurs when a new response is ready for dispatch */
 49:     public $onResponse;
 50: 
 51:     /** @var array of function(Application $sender, \Exception $e); Occurs when an unhandled exception occurs in the application */
 52:     public $onError;
 53: 
 54:     /** @deprecated */
 55:     public $allowedMethods;
 56: 
 57:     /** @var Request[] */
 58:     private $requests = array();
 59: 
 60:     /** @var IPresenter */
 61:     private $presenter;
 62: 
 63:     /** @var Nette\Http\IRequest */
 64:     private $httpRequest;
 65: 
 66:     /** @var Nette\Http\IResponse */
 67:     private $httpResponse;
 68: 
 69:     /** @var IPresenterFactory */
 70:     private $presenterFactory;
 71: 
 72:     /** @var IRouter */
 73:     private $router;
 74: 
 75: 
 76: 
 77:     public function __construct(IPresenterFactory $presenterFactory, IRouter $router, Nette\Http\IRequest $httpRequest, Nette\Http\IResponse $httpResponse)
 78:     {
 79:         $this->httpRequest = $httpRequest;
 80:         $this->httpResponse = $httpResponse;
 81:         $this->presenterFactory = $presenterFactory;
 82:         $this->router = $router;
 83:     }
 84: 
 85: 
 86: 
 87:     /**
 88:      * Dispatch a HTTP request to a front controller.
 89:      * @return void
 90:      */
 91:     public function run()
 92:     {
 93:         $request = NULL;
 94:         $repeatedError = FALSE;
 95:         do {
 96:             try {
 97:                 if (count($this->requests) > self::$maxLoop) {
 98:                     throw new ApplicationException('Too many loops detected in application life cycle.');
 99:                 }
100: 
101:                 if (!$request) {
102:                     $this->onStartup($this);
103: 
104:                     $request = $this->router->match($this->httpRequest);
105:                     if (!$request instanceof Request) {
106:                         $request = NULL;
107:                         throw new BadRequestException('No route for HTTP request.');
108:                     }
109: 
110:                     if (strcasecmp($request->getPresenterName(), $this->errorPresenter) === 0) {
111:                         throw new BadRequestException('Invalid request. Presenter is not achievable.');
112:                     }
113:                 }
114: 
115:                 $this->requests[] = $request;
116:                 $this->onRequest($this, $request);
117: 
118:                 // Instantiate presenter
119:                 $presenterName = $request->getPresenterName();
120:                 try {
121:                     $this->presenter = $this->presenterFactory->createPresenter($presenterName);
122:                 } catch (InvalidPresenterException $e) {
123:                     throw new BadRequestException($e->getMessage(), 404, $e);
124:                 }
125: 
126:                 $this->presenterFactory->getPresenterClass($presenterName);
127:                 $request->setPresenterName($presenterName);
128:                 $request->freeze();
129: 
130:                 // Execute presenter
131:                 $response = $this->presenter->run($request);
132:                 if ($response) {
133:                     $this->onResponse($this, $response);
134:                 }
135: 
136:                 // Send response
137:                 if ($response instanceof Responses\ForwardResponse) {
138:                     $request = $response->getRequest();
139:                     continue;
140: 
141:                 } elseif ($response instanceof IResponse) {
142:                     $response->send($this->httpRequest, $this->httpResponse);
143:                 }
144:                 break;
145: 
146:             } catch (\Exception $e) {
147:                 // fault barrier
148:                 $this->onError($this, $e);
149: 
150:                 if (!$this->catchExceptions) {
151:                     $this->onShutdown($this, $e);
152:                     throw $e;
153:                 }
154: 
155:                 if ($repeatedError) {
156:                     $e = new ApplicationException('An error occurred while executing error-presenter', 0, $e);
157:                 }
158: 
159:                 if (!$this->httpResponse->isSent()) {
160:                     $this->httpResponse->setCode($e instanceof BadRequestException ? $e->getCode() : 500);
161:                 }
162: 
163:                 if (!$repeatedError && $this->errorPresenter) {
164:                     $repeatedError = TRUE;
165:                     if ($this->presenter instanceof UI\Presenter) {
166:                         try {
167:                             $this->presenter->forward(":$this->errorPresenter:", array('exception' => $e));
168:                         } catch (AbortException $foo) {
169:                             $request = $this->presenter->getLastCreatedRequest();
170:                         }
171:                     } else {
172:                         $request = new Request(
173:                             $this->errorPresenter,
174:                             Request::FORWARD,
175:                             array('exception' => $e)
176:                         );
177:                     }
178:                     // continue
179: 
180:                 } else { // default error handler
181:                     if ($e instanceof BadRequestException) {
182:                         $code = $e->getCode();
183:                     } else {
184:                         $code = 500;
185:                         Nette\Diagnostics\Debugger::log($e, Nette\Diagnostics\Debugger::ERROR);
186:                     }
187:                     require __DIR__ . '/templates/error.phtml';
188:                     break;
189:                 }
190:             }
191:         } while (1);
192: 
193:         $this->onShutdown($this, isset($e) ? $e : NULL);
194:     }
195: 
196: 
197: 
198:     /**
199:      * Returns all processed requests.
200:      * @return Request[]
201:      */
202:     final public function getRequests()
203:     {
204:         return $this->requests;
205:     }
206: 
207: 
208: 
209:     /**
210:      * Returns current presenter.
211:      * @return IPresenter
212:      */
213:     final public function getPresenter()
214:     {
215:         return $this->presenter;
216:     }
217: 
218: 
219: 
220:     /********************* services ****************d*g**/
221: 
222: 
223: 
224:     /**
225:      * Returns router.
226:      * @return IRouter
227:      */
228:     public function getRouter()
229:     {
230:         return $this->router;
231:     }
232: 
233: 
234: 
235:     /**
236:      * Returns presenter factory.
237:      * @return IPresenterFactory
238:      */
239:     public function getPresenterFactory()
240:     {
241:         return $this->presenterFactory;
242:     }
243: 
244: 
245: 
246:     /********************* request serialization ****************d*g**/
247: 
248: 
249: 
250:     /** @deprecated */
251:     function storeRequest($expiration = '+ 10 minutes')
252:     {
253:         return $this->presenter->storeRequest($expiration);
254:     }
255: 
256:     /** @deprecated */
257:     function restoreRequest($key)
258:     {
259:         return $this->presenter->restoreRequest($key);
260:     }
261: 
262: }
263: 
Nette Framework 2.0.10 API API documentation generated by ApiGen 2.8.0