3 * The middlware debug output system. A *real* or concrete output class shall
4 * become registered with this middleware because the back-fall class will
5 * become deprecated soon.
7 * @author Roland Haeder <webmaster@shipsimu.org>
9 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2013 Core Developer Team
10 * @license GNU GPL 3.0 or any newer version
11 * @link http://www.shipsimu.org
13 * This program is free software: you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation, either version 3 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 class DebugMiddleware extends BaseMiddleware implements Registerable {
28 * The concrete output instance
30 private $outputInstance = NULL;
33 * An instance of this class
35 private static $selfInstance = NULL;
38 * Protected constructor
42 protected function __construct () {
43 // Call parent constructor
44 parent::__construct(__CLASS__);
47 self::$selfInstance = $this;
49 // Set it so all can use it
50 $this->setDebugInstance($this);
54 * Create a new debug output system.
55 * If no output is given this class is currently being used for back-fall.
56 * This fall-back mechanism will become deprecated very soon.
58 * @param $debuggerClass The class name which we shall use for
59 * registering the *real* debug output
60 * @return $debugInstance An instance of this middleware class
62 public static final function createDebugMiddleware ($debuggerClass) {
63 // Create an instance if this middleware
64 $debugInstance = new DebugMiddleware();
66 // Is there a valid output instance provided?
67 if ((!is_null($debuggerClass)) && (is_object($debuggerClass)) && ($debuggerClass instanceof OutputStreamer)) {
68 // Use the given output instance
69 $debugInstance->setOutputInstance($debuggerClass);
70 } elseif ((!is_null($debuggerClass)) && (is_string($debuggerClass)) && (class_exists($debuggerClass))) {
71 // A name for a debug output class has been provided so we try to get it
72 $debuggerInstance = ObjectFactory::createObjectByName($debuggerClass);
74 // Set this as output class
75 $debugInstance->setOutputInstance($debuggerInstance);
79 return $debugInstance;
83 * Getter for an instance of this class
85 * @return $selfInstance An instance of this class
87 public static final function getSelfInstance() {
88 return self::$selfInstance;
92 * Setter for output instance
94 * @param $outputInstance The debug output instance
97 public final function setOutputInstance (OutputStreamer $outputInstance) {
98 $this->outputInstance = $outputInstance;
102 * This method shall send debug output which can be HTML code for the
103 * browser or debug lines for a log file, etc. to the registered debug
106 * @param $outStream Data we shall 'stream' out to the world
107 * @param $stripTags Whether HTML tags shall be stripped out
110 public final function output ($outStream, $stripTags = FALSE) {
111 // Is the output stream set
112 if (empty($outStream)) {
113 // @TODO Initialization phase
117 // Use the output instance
118 $this->outputInstance->outputStream($outStream, $stripTags);