[BUGFIX] SQL error in install tool if no root page available
[Packages/TYPO3.CMS.git] / typo3 / sysext / frontend / Classes / MediaWizard / MediaWizardProviderManager.php
1 <?php
2 namespace TYPO3\CMS\Frontend\MediaWizard;
3
4 /***************************************************************
5 * Copyright notice
6 *
7 * (c) 2010-2013 Ernesto Baschny <ernst@cron-it.de>
8 * All rights reserved
9 *
10 * This script is part of the TYPO3 project. The TYPO3 project is
11 * free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * The GNU General Public License can be found at
17 * http://www.gnu.org/copyleft/gpl.html.
18 * A copy is found in the textfile GPL.txt and important notices to the license
19 * from the author is found in LICENSE.txt distributed with these scripts.
20 *
21 *
22 * This script is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * This copyright notice MUST APPEAR in all copies of the script!
28 ***************************************************************/
29 /**
30 * Manager to register and call registered media wizard providers
31 *
32 * @author Ernesto Baschny <ernst@cron-it.de>
33 * @static
34 */
35 class MediaWizardProviderManager {
36
37 /**
38 * @var array
39 */
40 static protected $providers = array();
41
42 /**
43 * Allows extensions to register themselves as media wizard providers
44 *
45 * @param string $className A class implementing MediaWizardProviderInterface
46 * @return void
47 */
48 static public function registerMediaWizardProvider($className) {
49 if (!isset(self::$providers[$className])) {
50 $provider = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($className);
51 if (!$provider instanceof \TYPO3\CMS\Frontend\MediaWizard\MediaWizardProviderInterface) {
52 throw new \UnexpectedValueException($className . ' is registered as a mediaWizardProvider, so it must implement interface TYPO3\\CMS\\Frontend\\MediaWizard\\MediaWizardProviderInterface', 1285022360);
53 }
54 self::$providers[$className] = $provider;
55 }
56 }
57
58 /**
59 * @param string $url
60 * @return A valid mediaWizardProvider that can handle this URL
61 */
62 static public function getValidMediaWizardProvider($url) {
63 // Go through registered providers in reverse order (last one registered wins)
64 $providers = array_reverse(self::$providers, TRUE);
65 foreach ($providers as $provider) {
66 /** @var $provider \TYPO3\CMS\Frontend\MediaWizard\MediaWizardProviderInterface */
67 if ($provider->canHandle($url)) {
68 return $provider;
69 }
70 }
71 // No provider found
72 return NULL;
73 }
74
75 }
76
77
78 ?>