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 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\Forms\Controls;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Hidden form control used to store a non-displayed value.
15:  */
16: class HiddenField extends BaseControl
17: {
18:     /** @var bool */
19:     private $persistValue;
20: 
21: 
22:     public function __construct($persistentValue = NULL)
23:     {
24:         parent::__construct();
25:         $this->control->type = 'hidden';
26:         if ($persistentValue !== NULL) {
27:             $this->unmonitor('Nette\Forms\Form');
28:             $this->persistValue = TRUE;
29:             $this->value = (string) $persistentValue;
30:         }
31:     }
32: 
33: 
34:     /**
35:      * Sets control's value.
36:      * @param  string
37:      * @return self
38:      */
39:     public function setValue($value)
40:     {
41:         if (!is_scalar($value) && $value !== NULL && !method_exists($value, '__toString')) {
42:             throw new Nette\InvalidArgumentException(sprintf("Value must be scalar or NULL, %s given in field '%s'.", gettype($value), $this->name));
43:         }
44:         if (!$this->persistValue) {
45:             $this->value = (string) $value;
46:         }
47:         return $this;
48:     }
49: 
50: 
51:     /**
52:      * Generates control's HTML element.
53:      * @return Nette\Utils\Html
54:      */
55:     public function getControl()
56:     {
57:         $this->setOption('rendered', TRUE);
58:         $el = clone $this->control;
59:         return $el->addAttributes(array(
60:             'name' => $this->getHtmlName(),
61:             'disabled' => $this->isDisabled(),
62:             'value' => $this->value,
63:         ));
64:     }
65: 
66: 
67:     /**
68:      * Bypasses label generation.
69:      * @return void
70:      */
71:     public function getLabel($caption = NULL)
72:     {
73:         return NULL;
74:     }
75: 
76: 
77:     /**
78:      * Adds error message to the list.
79:      * @param  string  error message
80:      * @return void
81:      */
82:     public function addError($message)
83:     {
84:         $this->getForm()->addError($message);
85:     }
86: 
87: }
88: 
Nette 2.3.8 API API documentation generated by ApiGen 2.8.0