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\Application;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Link generator.
15:  */
16: class LinkGenerator extends Nette\Object
17: {
18:     /** @var IRouter */
19:     private $router;
20: 
21:     /** @var Nette\Http\Url */
22:     private $refUrl;
23: 
24:     /** @var IPresenterFactory|NULL */
25:     private $presenterFactory;
26: 
27: 
28:     public function __construct(IRouter $router, Nette\Http\Url $refUrl, IPresenterFactory $presenterFactory = NULL)
29:     {
30:         $this->router = $router;
31:         $this->refUrl = $refUrl;
32:         $this->presenterFactory = $presenterFactory;
33:     }
34: 
35: 
36:     /**
37:      * Generates URL to presenter.
38:      * @param  string   destination in format "[[[module:]presenter:]action] [#fragment]"
39:      * @return string
40:      * @throws UI\InvalidLinkException
41:      */
42:     public function link($dest, array $params = array())
43:     {
44:         if (!preg_match('~^([\w:]+):(\w*+)(#.*)?()\z~', $dest, $m)) {
45:             throw new UI\InvalidLinkException("Invalid link destination '$dest'.");
46:         }
47:         list(, $presenter, $action, $frag) = $m;
48: 
49:         try {
50:             $class = $this->presenterFactory ? $this->presenterFactory->getPresenterClass($presenter) : NULL;
51:         } catch (InvalidPresenterException $e) {
52:             throw new UI\InvalidLinkException($e->getMessage(), NULL, $e);
53:         }
54: 
55:         if (is_subclass_of($class, 'Nette\Application\UI\Presenter')) {
56:             if ($action === '') {
57:                 $action = UI\Presenter::DEFAULT_ACTION;
58:             }
59:             if (method_exists($class, $method = $class::formatActionMethod($action))
60:                 || method_exists($class, $method = $class::formatRenderMethod($action))
61:             ) {
62:                 UI\Presenter::argsToParams($class, $method, $params);
63:             }
64:         }
65: 
66:         if ($action !== '') {
67:             $params[UI\Presenter::ACTION_KEY] = $action;
68:         }
69: 
70:         $url = $this->router->constructUrl(new Request($presenter, NULL, $params), $this->refUrl);
71:         if ($url === NULL) {
72:             unset($params[UI\Presenter::ACTION_KEY]);
73:             $params = urldecode(http_build_query($params, NULL, ', '));
74:             throw new UI\InvalidLinkException("No route for $dest($params)");
75:         }
76:         return $url . $frag;
77:     }
78: 
79: }
80: