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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Form
  * @subpackage Decorator
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 /** Zend_Form_Decorator_Abstract */
 // require_once 'Zend/Form/Decorator/Abstract.php';
 
 /**
  * Zend_Form_Decorator_Image
  *
  * Accepts the options:
  * - separator: separator to use between image and content (defaults to PHP_EOL)
  * - placement: whether to append or prepend label to content (defaults to append)
  * - tag: if set, used to wrap the label in an additional HTML tag
  *
  * Any other options passed will be used as HTML attributes of the image tag.
  *
  * @category   Zend
  * @package    Zend_Form
  * @subpackage Decorator
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 class Zend_Form_Decorator_Image extends Zend_Form_Decorator_Abstract
 {
     /**
      * Attributes that should not be passed to helper
      * @var array
      */
     protected $_attribBlacklist = array('helper', 'placement', 'separator', 'tag');
 
     /**
      * Default placement: append
      * @var string
      */
     protected $_placement = 'APPEND';
 
     /**
      * HTML tag with which to surround image
      * @var string
      */
     protected $_tag;
 
     /**
      * Set HTML tag with which to surround label
      *
      * @param  string $tag
      * @return Zend_Form_Decorator_Image
      */
     public function setTag($tag)
     {
         $this->_tag = (string) $tag;
         return $this;
     }
 
     /**
      * Get HTML tag, if any, with which to surround label
      *
      * @return void
      */
     public function getTag()
     {
         if (null === $this->_tag) {
             $tag = $this->getOption('tag');
             if (null !== $tag) {
                 $this->removeOption('tag');
                 $this->setTag($tag);
             }
             return $tag;
         }
 
         return $this->_tag;
     }
 
     /**
      * Get attributes to pass to image helper
      *
      * @return array
      */
     public function getAttribs()
     {
         $attribs = $this->getOptions();
 
         if (null !== ($element = $this->getElement())) {
             $attribs['alt'] = $element->getLabel();
             $attribs = array_merge($attribs, $element->getAttribs());
         }
 
         foreach ($this->_attribBlacklist as $key) {
             if (array_key_exists($key, $attribs)) {
                 unset($attribs[$key]);
             }
         }
 
         return $attribs;
     }
 
     /**
      * Render a form image
      *
      * @param  string $content
      * @return string
      */
     public function render($content)
     {
         $element = $this->getElement();
         $view    = $element->getView();
         if (null === $view) {
             return $content;
         }
 
         $tag           = $this->getTag();
         $placement     = $this->getPlacement();
         $separator     = $this->getSeparator();
         $name          = $element->getFullyQualifiedName();
         $attribs       = $this->getAttribs();
         $attribs['id'] = $element->getId();
 
         $image = $view->formImage($name, $element->getImageValue(), $attribs);
 
         if (null !== $tag) {
             // require_once 'Zend/Form/Decorator/HtmlTag.php';
             $decorator = new Zend_Form_Decorator_HtmlTag();
             $decorator->setOptions(array('tag' => $tag));
             $image = $decorator->render($image);
         }
 
         switch ($placement) {
             case self::PREPEND:
                 return $image . $separator . $content;
             case self::APPEND:
             default:
                 return $content . $separator . $image;
         }
     }
 }