1: <?php
 2: /**
 3:  * Magento
 4:  *
 5:  * NOTICE OF LICENSE
 6:  *
 7:  * This source file is subject to the Open Software License (OSL 3.0)
 8:  * that is bundled with this package in the file LICENSE.txt.
 9:  * It is also available through the world-wide-web at this URL:
10:  * http://opensource.org/licenses/osl-3.0.php
11:  * If you did not receive a copy of the license and are unable to
12:  * obtain it through the world-wide-web, please send an email
13:  * to license@magentocommerce.com so we can send you a copy immediately.
14:  *
15:  * DISCLAIMER
16:  *
17:  * Do not edit or add to this file if you wish to upgrade Magento to newer
18:  * versions in the future. If you wish to customize Magento for your
19:  * needs please refer to http://www.magentocommerce.com for more information.
20:  *
21:  * @category    Mage
22:  * @package     Mage_Core
23:  * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
24:  * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
25:  */
26: 
27: /**
28:  * Block, that can get data from layout or from registry.
29:  * Can compare its data values by specified keys
30:  *
31:  * @category   Mage
32:  * @package    Mage_Core
33:  * @author     Magento Core Team <core@magentocommerce.com>
34:  */
35: class Mage_Core_Block_Template_Facade extends Mage_Core_Block_Template
36: {
37:     /**
38:      * Just set data, like Varien_Object
39:      *
40:      * This method is to be used in layout.
41:      * In layout it can be understood better, than setSomeKeyBlahBlah()
42:      *
43:      * @param string $key
44:      * @param string $value
45:      */
46:     public function setDataByKey($key, $value)
47:     {
48:         $this->_data[$key] = $value;
49:     }
50: 
51:     /**
52:      * Also set data, but take the value from registry by registry key
53:      *
54:      * @param string $key
55:      * @param string $registryKey
56:      */
57:     public function setDataByKeyFromRegistry($key, $registryKey)
58:     {
59:         $registryItem = Mage::registry($registryKey);
60:         if (empty($registryItem)) {
61:             return;
62:         }
63:         $value = $registryItem->getData($key);
64:         $this->setDataByKey($key, $value);
65:     }
66: 
67:     /**
68:      * Check if data values by specified keys are equal
69:      * $conditionKeys can be array or arbitrary set of params (func_get_args())
70:      *
71:      * @param array $conditionKeys
72:      * @return bool
73:      */
74:     public function ifEquals($conditionKeys)
75:     {
76:         if (!is_array($conditionKeys)) {
77:             $conditionKeys = func_get_args();
78:         }
79: 
80:         // evaluate conditions (equality)
81:         if (!empty($conditionKeys)) {
82:             foreach ($conditionKeys as $key) {
83:                 if (!isset($this->_data[$key])) {
84:                     return false;
85:                 }
86:             }
87:             $lastValue = $this->_data[$key];
88:             foreach ($conditionKeys as $key) {
89:                 if ($this->_data[$key] !== $lastValue)  {
90:                     return false;
91:                 }
92:             }
93:         }
94:         return true;
95:     }
96: }
97: