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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:  * Front Controller.
 19:  *
 20:  * @author     David Grudl
 21:  *
 22:  * @property-read array $requests
 23:  * @property-read IPresenter $presenter
 24:  * @property-read IRouter $router
 25:  * @property-read IPresenterFactory $presenterFactory
 26:  */
 27: class Application extends Nette\Object
 28: {
 29:     /** @var int */
 30:     public static $maxLoop = 20;
 31: 
 32:     /** @var bool enable fault barrier? */
 33:     public $catchExceptions;
 34: 
 35:     /** @var string */
 36:     public $errorPresenter;
 37: 
 38:     /** @var array of function(Application $sender); Occurs before the application loads presenter */
 39:     public $onStartup;
 40: 
 41:     /** @var array of function(Application $sender, \Exception $e = NULL); Occurs before the application shuts down */
 42:     public $onShutdown;
 43: 
 44:     /** @var array of function(Application $sender, Request $request); Occurs when a new request is received */
 45:     public $onRequest;
 46: 
 47:     /** @var array of function(Application $sender, IResponse $response); Occurs when a new response is ready for dispatch */
 48:     public $onResponse;
 49: 
 50:     /** @var array of function(Application $sender, \Exception $e); Occurs when an unhandled exception occurs in the application */
 51:     public $onError;
 52: 
 53:     /** @deprecated */
 54:     public $allowedMethods;
 55: 
 56:     /** @var Request[] */
 57:     private $requests = array();
 58: 
 59:     /** @var IPresenter */
 60:     private $presenter;
 61: 
 62:     /** @var Nette\Http\IRequest */
 63:     private $httpRequest;
 64: 
 65:     /** @var Nette\Http\IResponse */
 66:     private $httpResponse;
 67: 
 68:     /** @var IPresenterFactory */
 69:     private $presenterFactory;
 70: 
 71:     /** @var IRouter */
 72:     private $router;
 73: 
 74: 
 75:     public function __construct(IPresenterFactory $presenterFactory, IRouter $router, Nette\Http\IRequest $httpRequest, Nette\Http\IResponse $httpResponse)
 76:     {
 77:         $this->httpRequest = $httpRequest;
 78:         $this->httpResponse = $httpResponse;
 79:         $this->presenterFactory = $presenterFactory;
 80:         $this->router = $router;
 81:     }
 82: 
 83: 
 84:     /**
 85:      * Dispatch a HTTP request to a front controller.
 86:      * @return void
 87:      */
 88:     public function run()
 89:     {
 90:         $request = NULL;
 91:         $repeatedError = FALSE;
 92:         do {
 93:             try {
 94:                 if (count($this->requests) > self::$maxLoop) {
 95:                     throw new ApplicationException('Too many loops detected in application life cycle.');
 96:                 }
 97: 
 98:                 if (!$request) {
 99:                     $this->onStartup($this);
100: 
101:                     $request = $this->router->match($this->httpRequest);
102:                     if (!$request instanceof Request) {
103:                         $request = NULL;
104:                         throw new BadRequestException('No route for HTTP request.');
105:                     }
106: 
107:                     if (strcasecmp($request->getPresenterName(), $this->errorPresenter) === 0) {
108:                         throw new BadRequestException('Invalid request. Presenter is not achievable.');
109:                     }
110:                 }
111: 
112:                 $this->requests[] = $request;
113:                 $this->onRequest($this, $request);
114: 
115:                 // Instantiate presenter
116:                 $presenterName = $request->getPresenterName();
117:                 try {
118:                     $this->presenter = $this->presenterFactory->createPresenter($presenterName);
119:                 } catch (InvalidPresenterException $e) {
120:                     throw new BadRequestException($e->getMessage(), 404, $e);
121:                 }
122: 
123:                 $this->presenterFactory->getPresenterClass($presenterName);
124:                 $request->setPresenterName($presenterName);
125:                 $request->freeze();
126: 
127:                 // Execute presenter
128:                 $response = $this->presenter->run($request);
129:                 if ($response) {
130:                     $this->onResponse($this, $response);
131:                 }
132: 
133:                 // Send response
134:                 if ($response instanceof Responses\ForwardResponse) {
135:                     $request = $response->getRequest();
136:                     continue;
137: 
138:                 } elseif ($response instanceof IResponse) {
139:                     $response->send($this->httpRequest, $this->httpResponse);
140:                 }
141:                 break;
142: 
143:             } catch (\Exception $e) {
144:                 // fault barrier
145:                 $this->onError($this, $e);
146: 
147:                 if (!$this->catchExceptions) {
148:                     $this->onShutdown($this, $e);
149:                     throw $e;
150:                 }
151: 
152:                 if ($repeatedError) {
153:                     $e = new ApplicationException('An error occurred while executing error-presenter', 0, $e);
154:                 }
155: 
156:                 if (!$this->httpResponse->isSent()) {
157:                     $this->httpResponse->setCode($e instanceof BadRequestException ? $e->getCode() : 500);
158:                 }
159: 
160:                 if (!$repeatedError && $this->errorPresenter) {
161:                     $repeatedError = TRUE;
162:                     if ($this->presenter instanceof UI\Presenter) {
163:                         try {
164:                             $this->presenter->forward(":$this->errorPresenter:", array('exception' => $e));
165:                         } catch (AbortException $foo) {
166:                             $request = $this->presenter->getLastCreatedRequest();
167:                         }
168:                     } else {
169:                         $request = new Request(
170:                             $this->errorPresenter,
171:                             Request::FORWARD,
172:                             array('exception' => $e)
173:                         );
174:                     }
175:                     // continue
176: 
177:                 } else { // default error handler
178:                     if ($e instanceof BadRequestException) {
179:                         $code = $e->getCode();
180:                     } else {
181:                         $code = 500;
182:                         Nette\Diagnostics\Debugger::log($e, Nette\Diagnostics\Debugger::ERROR);
183:                     }
184:                     require __DIR__ . '/templates/error.phtml';
185:                     break;
186:                 }
187:             }
188:         } while (1);
189: 
190:         $this->onShutdown($this, isset($e) ? $e : NULL);
191:     }
192: 
193: 
194:     /**
195:      * Returns all processed requests.
196:      * @return Request[]
197:      */
198:     final public function getRequests()
199:     {
200:         return $this->requests;
201:     }
202: 
203: 
204:     /**
205:      * Returns current presenter.
206:      * @return IPresenter
207:      */
208:     final public function getPresenter()
209:     {
210:         return $this->presenter;
211:     }
212: 
213: 
214:     /********************* services ****************d*g**/
215: 
216: 
217:     /**
218:      * Returns router.
219:      * @return IRouter
220:      */
221:     public function getRouter()
222:     {
223:         return $this->router;
224:     }
225: 
226: 
227:     /**
228:      * Returns presenter factory.
229:      * @return IPresenterFactory
230:      */
231:     public function getPresenterFactory()
232:     {
233:         return $this->presenterFactory;
234:     }
235: 
236: 
237:     /********************* request serialization ****************d*g**/
238: 
239: 
240:     /** @deprecated */
241:     function storeRequest($expiration = '+ 10 minutes')
242:     {
243:         return $this->presenter->storeRequest($expiration);
244:     }
245: 
246:     /** @deprecated */
247:     function restoreRequest($key)
248:     {
249:         return $this->presenter->restoreRequest($key);
250:     }
251: 
252: }
253: 
Nette Framework 2.0.12 API API documentation generated by ApiGen 2.8.0