1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 6:  */
 7: 
 8: namespace Nette\Caching;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Output caching helper.
15:  */
16: class OutputHelper extends Nette\Object
17: {
18:     /** @var array */
19:     public $dependencies;
20: 
21:     /** @var Cache */
22:     private $cache;
23: 
24:     /** @var string */
25:     private $key;
26: 
27: 
28:     public function __construct(Cache $cache, $key)
29:     {
30:         $this->cache = $cache;
31:         $this->key = $key;
32:         ob_start();
33:     }
34: 
35: 
36:     /**
37:      * Stops and saves the cache.
38:      * @param  array  dependencies
39:      * @return void
40:      */
41:     public function end(array $dependencies = NULL)
42:     {
43:         if ($this->cache === NULL) {
44:             throw new Nette\InvalidStateException('Output cache has already been saved.');
45:         }
46:         $this->cache->save($this->key, ob_get_flush(), (array) $dependencies + (array) $this->dependencies);
47:         $this->cache = NULL;
48:     }
49: 
50: }
51: