105 lines
No EOL
3.3 KiB
PHP
105 lines
No EOL
3.3 KiB
PHP
<?php
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/*
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* Copyright (c) 2010 by Justin Otherguy <justin@justinotherguy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (either version 2 or
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* version 3) as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* For more information on the GPL, please go to:
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* http://www.gnu.org/copyleft/gpl.html
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*/
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namespace Volkszaehler\View;
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interface ViewInterface {
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public function addException(\Exception $e);
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public function addDebug();
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}
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abstract class View implements ViewInterface {
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public $request;
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protected $response;
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private $created; // holds timestamp of creation, used later to return time of execution
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public function __construct(Http\Request $request, Http\Response $response) {
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$this->request = $request;
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$this->response = $response;
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// TODO move to Debug or State class
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$this->created = microtime(true);
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// error & exception handling by view
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set_exception_handler(array($this, 'exceptionHandler'));
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set_error_handler(array($this, 'errorHandler'));
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}
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/*
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* creates new view instance depending on the requested format
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* @todo improve mapping
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*/
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public static function factory(Http\Request $request, Http\Response $response) {
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$format = strtolower($request->getParameter('format'));
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$controller = strtolower($request->getParameter('controller'));
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if (in_array($format, array('png', 'jpg'))) {
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$view = new JpGraph($request, $response, $format);
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}
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else {
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if ($controller == 'data' && ($format == 'json' || $format == 'xml')) {
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$controller = 'channel';
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}
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$viewClassName = 'Volkszaehler\View\\' . ucfirst($format) . '\\' . ucfirst($controller);
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if (!(\Volkszaehler\Util\ClassLoader::classExists($viewClassName)) || !is_subclass_of($viewClassName, '\Volkszaehler\View\View')) {
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throw new \InvalidArgumentException('\'' . $viewClassName . '\' is not a valid View');
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}
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$view = new $viewClassName($request, $response);
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}
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return $view;
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}
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/*
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* error & exception handling
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*/
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final public function errorHandler($errno, $errstr, $errfile, $errline) {
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$this->exceptionHandler(new \ErrorException($errstr, 0, $errno, $errfile, $errline));
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}
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final public function exceptionHandler(\Exception $exception) {
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$this->addException($exception);
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//$this->status = STATUS_EXCEPTION; // TODO add status reporting to API
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$code = ($exception->getCode() == 0 && Http\Response::getCodeDescription($exception->getCode())) ? 400 : $exception->getCode();
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$this->response->setCode($code);
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$this->render();
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die();
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}
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// TODO move this into Debug or State Class
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protected function getTime() {
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return round(microtime(true) - $this->created, 4);
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}
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public function render() {
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if (!is_null($this->request->getParameter('debug')) && $this->request->getParameter('debug') > 0) {
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$this->addDebug();
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}
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$this->response->send();
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}
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} |