interface/modules/zend_modules/library/Zend/Form/View/Helper/FormTextarea.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Form\View\Helper;
  11
  12 use Zend\Form\ElementInterface;
  13 use Zend\Form\Exception;
  14
  15 class FormTextarea extends AbstractHelper
  16 {
  17     /**
  18      * Attributes valid for the input tag
  19      *
  20      * @var array
  21      */
  22     protected $validTagAttributes = array(
  23         'autofocus'   => true,
  24         'cols'        => true,
  25         'dirname'     => true,
  26         'disabled'    => true,
  27         'form'        => true,
  28         'maxlength'   => true,
  29         'name'        => true,
  30         'placeholder' => true,
  31         'readonly'    => true,
  32         'required'    => true,
  33         'rows'        => true,
  34         'wrap'        => true,
  35     );
  36
  37     /**
  38      * Invoke helper as functor
  39      *
  40      * Proxies to {@link render()}.
  41      *
  42      * @param  ElementInterface|null $element
  43      * @return string|FormTextarea
  44      */
  45     public function __invoke(ElementInterface $element = null)
  46     {
  47         if (!$element) {
  48             return $this;
  49         }
  50
  51         return $this->render($element);
  52     }
  53
  54     /**
  55      * Render a form <textarea> element from the provided $element
  56      *
  57      * @param  ElementInterface $element
  58      * @throws Exception\DomainException
  59      * @return string
  60      */
  61     public function render(ElementInterface $element)
  62     {
  63         $name   = $element->getName();
  64         if (empty($name) && $name !== 0) {
  65             throw new Exception\DomainException(sprintf(
  66                 '%s requires that the element has an assigned name; none discovered',
  67                 __METHOD__
  68             ));
  69         }
  70
  71         $attributes         = $element->getAttributes();
  72         $attributes['name'] = $name;
  73         $content            = (string) $element->getValue();
  74         $escapeHtml         = $this->getEscapeHtmlHelper();
  75
  76         return sprintf(
  77             '<textarea %s>%s</textarea>',
  78             $this->createAttributesString($attributes),
  79             $escapeHtml($content)
  80         );
  81     }
  82 }