1: <?php
 2: 
 3: App::uses('Component', 'Controller');
 4: App::uses('Contexts', 'Contexts.Lib');
 5: 
 6: class ContextComponent extends Component {
 7: 
 8:     private $currentId;
 9: 
10:     public function __construct(\ComponentCollection $collection, $settings = array()) {
11:         parent::__construct($collection,
12:                 Hash::merge(array(
13:                     'id' => false,
14:                         ), $settings));
15:         if (!$this->settings['id']) {
16:             throw new Exception("ID de contexto não informado");
17:         }
18:     }
19: 
20:     public function initialize(\Controller $controller) {
21:         parent::initialize($controller);
22: 
23:         $this->currentId = Contexts::getContext($this->settings['id'])->getInstanceIdByUrl(
24:                 $controller->request->params
25:         );
26:         $this->_checkChangeContext($controller);
27:     }
28:     
29:     private function _checkChangeContext(\Controller $controller) {
30:         if (!empty($controller->request->params['named']['changeContextId'])) {
31:             $this->_changeContext(
32:                     $controller
33:                     , $controller->request->params['named']['changeContextId']);
34:         }
35:     }
36: 
37:     private function _changeContext(\Controller $controller, $contextId) {
38:         $controller->redirect($this->_changeUrl($controller, $contextId));
39:     }
40: 
41:     private function _changeUrl(\Controller $controller, $contextId) {
42:         $url = Router::parse($controller->request->url);
43:         unset($url['named']['changeContextId']);
44:         $url['pass'][0] = $contextId;
45:         $url = array_merge($url['named'], $url['pass'], $url);
46:         unset($url['named']);
47:         unset($url['pass']);
48:         return $url;
49:     }
50: 
51:     public function beforeRender(\Controller $controller) {
52:         $controller->set(
53:                 'contextCurrentId'
54:                 , $this->getCurrentId()
55:         );
56:         $controller->set(
57:                 'contextId'
58:                 , $this->settings['id']
59:         );
60:     }
61: 
62:     public function getCurrentId() {
63:         return $this->currentId;
64:     }
65: 
66: }
67: