1: <?php
 2: /**
 3:  * A Horde_Injector:: based factory for creating Horde_Core_Block_Collection
 4:  * objects.
 5:  *
 6:  * PHP version 5
 7:  *
 8:  * @category Horde
 9:  * @package  Core
10:  * @author   Michael Slusarz <slusarz@horde.org>
11:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
12:  * @link     http://pear.horde.org/index.php?package=Core
13:  */
14: 
15: /**
16:  * A Horde_Injector:: based factory for creating Horde_Core_Block_Collection
17:  * objects.
18:  *
19:  * Copyright 2011-2012 Horde LLC (http://www.horde.org/)
20:  *
21:  * See the enclosed file COPYING for license information (LGPL). If you
22:  * did not receive this file, see http://www.horde.org/licenses/lgpl21.
23:  *
24:  * @category Horde
25:  * @package  Core
26:  * @author   Michael Slusarz <slusarz@horde.org>
27:  * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
28:  * @link     http://pear.horde.org/index.php?package=Core
29:  */
30: class Horde_Core_Factory_BlockCollection extends Horde_Core_Factory_Base
31: {
32:     /**
33:      * Instances.
34:      *
35:      * @var array
36:      */
37:     private $_instances = array();
38: 
39:     /**
40:      * Return the Block_Collection instance.
41:      *
42:      * @param array $apps     The applications whose blocks to list.
43:      * @param string $layout  The preference name for the layout
44:      *                        configuration.
45:      *
46:      * @return Horde_Core_Block_Collection  The singleton instance.
47:      * @throws Horde_Exception
48:      */
49:     public function create(array $apps = array(), $layout = 'portal_layout')
50:     {
51:         global $registry, $session;
52: 
53:         if (empty($apps)) {
54:             $apps = $registry->listApps();
55:         } else {
56:             $apps = array_intersect($registry->listApps(), $apps);
57:         }
58: 
59:         sort($apps);
60:         $sig = hash('md5', serialize(array($apps, $layout)));
61: 
62:         if (!isset($this->_instances[$sig])) {
63:             if (!($ob = $session->retrieve('horde', 'blocks/' . $sig))) {
64:                 $ob = new Horde_Core_Block_Collection($apps, $layout);
65:                 $session->set('horde', 'blocks/' . $sig, $ob);
66: 
67:             }
68: 
69:             $this->_instances[$sig] = $ob;
70:         }
71: 
72:         return $this->_instances[$sig];
73:     }
74: 
75: }
76: