1: <?php
 2: /**
 3:  * A Horde_Injector based factory for the IMP_Flags object.
 4:  *
 5:  * PHP version 5
 6:  *
 7:  * @author   Michael Slusarz <slusarz@horde.org>
 8:  * @category Horde
 9:  * @license  http://www.horde.org/licenses/gpl GPL
10:  * @link     http://pear.horde.org/index.php?package=IMP
11:  * @package  IMP
12:  */
13: 
14: /**
15:  * A Horde_Injector based factory for the IMP_Flags object.
16:  *
17:  * Copyright 2010-2012 Horde LLC (http://www.horde.org/)
18:  *
19:  * See the enclosed file COPYING for license information (GPL). If you
20:  * did not receive this file, see http://www.horde.org/licenses/gpl.
21:  *
22:  * @author   Michael Slusarz <slusarz@horde.org>
23:  * @category Horde
24:  * @license  http://www.horde.org/licenses/gpl GPL
25:  * @link     http://pear.horde.org/index.php?package=IMP
26:  * @package  IMP
27:  */
28: class IMP_Factory_Flags extends Horde_Core_Factory_Injector
29: {
30:     /**
31:      * Return the IMP_Flags instance.
32:      *
33:      * @return IMP_Flags  The singleton instance.
34:      */
35:     public function create(Horde_Injector $injector)
36:     {
37:         try {
38:             $instance = $GLOBALS['session']->get('imp', 'flags');
39:         } catch (Exception $e) {
40:             Horde::logMessage('Could not unserialize stored IMP_Flags object.', 'DEBUG');
41:             $instance = null;
42:         }
43: 
44:         if (is_null($instance)) {
45:             $instance = new IMP_Flags();
46:         }
47: 
48:         register_shutdown_function(array($this, 'shutdown'), $instance);
49: 
50:         return $instance;
51:     }
52: 
53:     /**
54:      * Store serialized version of object in the current session.
55:      *
56:      * @param IMP_Flags $instance  Flags object.
57:      */
58:     public function shutdown($instance)
59:     {
60:         /* Only need to store the object if the object has changed. */
61:         if ($instance->changed) {
62:             $GLOBALS['session']->set('imp', 'flags', $instance);
63:         }
64:     }
65: 
66: }
67: