File indexing completed on 2024-06-16 05:30:34

 <?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_View
  * @subpackage Helper
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @version    $Id$
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 /** Zend_View_Helper_Placeholder_Container_Standalone */
 // require_once 'Zend/View/Helper/Placeholder/Container/Standalone.php';
 
 /**
  * Zend_Layout_View_Helper_HeadLink
  *
  * @see        http://www.w3.org/TR/xhtml1/dtds.html
  * @uses       Zend_View_Helper_Placeholder_Container_Standalone
  * @package    Zend_View
  * @subpackage Helper
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @method $this appendAlternate($href, $type, $title, $extras)
  * @method $this appendStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
  * @method $this offsetSetAlternate($index, $href, $type, $title, $extras)
  * @method $this offsetSetStylesheet($index, $href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
  * @method $this prependAlternate($href, $type, $title, $extras)
  * @method $this prependStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
  * @method $this setAlternate($href, $type, $title, $extras)
  * @method $this setStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
  */
 class Zend_View_Helper_HeadLink extends Zend_View_Helper_Placeholder_Container_Standalone
 {
     /**
      * $_validAttributes
      *
      * @var array
      */
     protected $_itemKeys = array(
         'charset',
         'href',
         'hreflang',
         'id',
         'media',
         'rel',
         'rev',
         'type',
         'title',
         'extras',
         'sizes',
     );
 
     /**
      * @var string registry key
      */
     protected $_regKey = 'Zend_View_Helper_HeadLink';
 
     /**
      * Constructor
      *
      * Use PHP_EOL as separator
      *
      * @return void
      */
     public function __construct()
     {
         parent::__construct();
         $this->setSeparator(PHP_EOL);
     }
 
     /**
      * headLink() - View Helper Method
      *
      * Returns current object instance. Optionally, allows passing array of
      * values to build link.
      *
      * @return Zend_View_Helper_HeadLink
      */
     public function headLink(array $attributes = null, $placement = Zend_View_Helper_Placeholder_Container_Abstract::APPEND)
     {
         if (null !== $attributes) {
             $item = $this->createData($attributes);
             switch ($placement) {
                 case Zend_View_Helper_Placeholder_Container_Abstract::SET:
                     $this->set($item);
                     break;
                 case Zend_View_Helper_Placeholder_Container_Abstract::PREPEND:
                     $this->prepend($item);
                     break;
                 case Zend_View_Helper_Placeholder_Container_Abstract::APPEND:
                 default:
                     $this->append($item);
                     break;
             }
         }
         return $this;
     }
 
     /**
      * Overload method access
      *
      * Creates the following virtual methods:
      * - appendStylesheet($href, $media, $conditionalStylesheet, $extras)
      * - offsetSetStylesheet($index, $href, $media, $conditionalStylesheet, $extras)
      * - prependStylesheet($href, $media, $conditionalStylesheet, $extras)
      * - setStylesheet($href, $media, $conditionalStylesheet, $extras)
      * - appendAlternate($href, $type, $title, $extras)
      * - offsetSetAlternate($index, $href, $type, $title, $extras)
      * - prependAlternate($href, $type, $title, $extras)
      * - setAlternate($href, $type, $title, $extras)
      *
      * Items that may be added in the future:
      * - Navigation?  need to find docs on this
      *   - public function appendStart()
      *   - public function appendContents()
      *   - public function appendPrev()
      *   - public function appendNext()
      *   - public function appendIndex()
      *   - public function appendEnd()
      *   - public function appendGlossary()
      *   - public function appendAppendix()
      *   - public function appendHelp()
      *   - public function appendBookmark()
      * - Other?
      *   - public function appendCopyright()
      *   - public function appendChapter()
      *   - public function appendSection()
      *   - public function appendSubsection()
      *
      * @param mixed $method
      * @param mixed $args
      * @return void
      */
     public function __call($method, $args)
     {
         if (preg_match('/^(?P<action>set|(ap|pre)pend|offsetSet)(?P<type>Stylesheet|Alternate)$/', $method, $matches)) {
             $argc   = count($args);
             $action = $matches['action'];
             $type   = $matches['type'];
             $index  = null;
 
             if ('offsetSet' == $action) {
                 if (0 < $argc) {
                     $index = array_shift($args);
                     --$argc;
                 }
             }
 
             if (1 > $argc) {
                 // require_once 'Zend/View/Exception.php';
                 $e =  new Zend_View_Exception(sprintf('%s requires at least one argument', $method));
                 $e->setView($this->view);
                 throw $e;
             }
 
             if (is_array($args[0])) {
                 $item = $this->createData($args[0]);
             } else {
                 $dataMethod = 'createData' . $type;
                 $item       = $this->$dataMethod($args);
             }
 
             if ($item) {
                 if ('offsetSet' == $action) {
                     $this->offsetSet($index, $item);
                 } else {
                     $this->$action($item);
                 }
             }
 
             return $this;
         }
 
         return parent::__call($method, $args);
     }
 
     /**
      * Check if value is valid
      *
      * @param  mixed $value
      * @return boolean
      */
     protected function _isValid($value)
     {
         if (!$value instanceof stdClass) {
             return false;
         }
 
         $vars         = get_object_vars($value);
         $keys         = array_keys($vars);
         $intersection = array_intersect($this->_itemKeys, $keys);
         if (empty($intersection)) {
             return false;
         }
 
         return true;
     }
 
     /**
      * append()
      *
      * @param  array $value
      * @return void
      */
     public function append($value)
     {
         if (!$this->_isValid($value)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('append() expects a data token; please use one of the custom append*() methods');
             $e->setView($this->view);
             throw $e;
         }
 
         return $this->getContainer()->append($value);
     }
 
     /**
      * offsetSet()
      *
      * @param  string|int $index
      * @param  array $value
      * @return void
      */
     public function offsetSet($index, $value)
     {
         if (!$this->_isValid($value)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('offsetSet() expects a data token; please use one of the custom offsetSet*() methods');
             $e->setView($this->view);
             throw $e;
         }
 
         return $this->getContainer()->offsetSet($index, $value);
     }
 
     /**
      * prepend()
      *
      * @param  array $value
      * @return Zend_Layout_ViewHelper_HeadLink
      */
     public function prepend($value)
     {
         if (!$this->_isValid($value)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('prepend() expects a data token; please use one of the custom prepend*() methods');
             $e->setView($this->view);
             throw $e;
         }
 
         return $this->getContainer()->prepend($value);
     }
 
     /**
      * set()
      *
      * @param  array $value
      * @return Zend_Layout_ViewHelper_HeadLink
      */
     public function set($value)
     {
         if (!$this->_isValid($value)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('set() expects a data token; please use one of the custom set*() methods');
             $e->setView($this->view);
             throw $e;
         }
 
         return $this->getContainer()->set($value);
     }
 
 
     /**
      * Create HTML link element from data item
      *
      * @param  stdClass $item
      * @return string
      */
     public function itemToString(stdClass $item)
     {
         $attributes = (array) $item;
         $link       = '<link ';
 
         foreach ($this->_itemKeys as $itemKey) {
             if (isset($attributes[$itemKey])) {
                 if(is_array($attributes[$itemKey])) {
                     foreach($attributes[$itemKey] as $key => $value) {
                         $link .= sprintf('%s="%s" ', $key, ($this->_autoEscape) ? $this->_escape($value) : $value);
                     }
                 } else {
                     $link .= sprintf('%s="%s" ', $itemKey, ($this->_autoEscape) ? $this->_escape($attributes[$itemKey]) : $attributes[$itemKey]);
                 }
             }
         }
 
         if ($this->view instanceof Zend_View_Abstract) {
             $link .= ($this->view->doctype()->isXhtml()) ? '/>' : '>';
         } else {
             $link .= '/>';
         }
 
         if (($link == '<link />') || ($link == '<link >')) {
             return '';
         }
 
         if (isset($attributes['conditionalStylesheet'])
             && !empty($attributes['conditionalStylesheet'])
             && is_string($attributes['conditionalStylesheet']))
         {
             if (str_replace(' ', '', $attributes['conditionalStylesheet']) === '!IE') {
                 $link = '<!-->' . $link . '<!--';
             }
             $link = '<!--[if ' . $attributes['conditionalStylesheet'] . ']>' . $link . '<![endif]-->';
         }
 
         return $link;
     }
 
     /**
      * Render link elements as string
      *
      * @param  string|int $indent
      * @return string
      */
     public function toString($indent = null)
     {
         $indent = (null !== $indent)
                 ? $this->getWhitespace($indent)
                 : $this->getIndent();
 
         $items = array();
         $this->getContainer()->ksort();
         foreach ($this as $item) {
             $items[] = $this->itemToString($item);
         }
 
         return $indent . implode($this->_escape($this->getSeparator()) . $indent, $items);
     }
 
     /**
      * Create data item for stack
      *
      * @param  array $attributes
      * @return stdClass
      */
     public function createData(array $attributes)
     {
         $data = (object) $attributes;
         return $data;
     }
 
     /**
      * Create item for stylesheet link item
      *
      * @param  array $args
      * @return stdClass|false Returns fals if stylesheet is a duplicate
      */
     public function createDataStylesheet(array $args)
     {
         $rel                   = 'stylesheet';
         $type                  = 'text/css';
         $media                 = 'screen';
         $conditionalStylesheet = false;
         $href                  = array_shift($args);
 
         if ($this->_isDuplicateStylesheet($href)) {
             return false;
         }
 
         if (0 < count($args)) {
             $media = array_shift($args);
             if(is_array($media)) {
                 $media = implode(',', $media);
             } else {
                 $media = (string) $media;
             }
         }
         if (0 < count($args)) {
             $conditionalStylesheet = array_shift($args);
             if(!empty($conditionalStylesheet) && is_string($conditionalStylesheet)) {
                 $conditionalStylesheet = (string) $conditionalStylesheet;
             } else {
                 $conditionalStylesheet = null;
             }
         }
 
         if(0 < count($args) && is_array($args[0])) {
             $extras = array_shift($args);
             $extras = (array) $extras;
         }
 
         $attributes = compact('rel', 'type', 'href', 'media', 'conditionalStylesheet', 'extras');
         return $this->createData($this->_applyExtras($attributes));
     }
 
     /**
      * Is the linked stylesheet a duplicate?
      *
      * @param  string $uri
      * @return bool
      */
     protected function _isDuplicateStylesheet($uri)
     {
         foreach ($this->getContainer() as $item) {
             if (($item->rel == 'stylesheet') && ($item->href == $uri)) {
                 return true;
             }
         }
         return false;
     }
 
     /**
      * Create item for alternate link item
      *
      * @param  array $args
      * @return stdClass
      */
     public function createDataAlternate(array $args)
     {
         if (3 > count($args)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception(sprintf('Alternate tags require 3 arguments; %s provided', count($args)));
             $e->setView($this->view);
             throw $e;
         }
 
         $rel   = 'alternate';
         $href  = array_shift($args);
         $type  = array_shift($args);
         $title = array_shift($args);
 
         if(0 < count($args) && is_array($args[0])) {
             $extras = array_shift($args);
             $extras = (array) $extras;
 
             if(isset($extras['media']) && is_array($extras['media'])) {
                 $extras['media'] = implode(',', $extras['media']);
             }
         }
 
         $href  = (string) $href;
         $type  = (string) $type;
         $title = (string) $title;
 
         $attributes = compact('rel', 'href', 'type', 'title', 'extras');
         return $this->createData($this->_applyExtras($attributes));
     }
 
     /**
      * Apply any overrides specified in the 'extras' array
      * @param array $attributes
      * @return array
      */
     protected function _applyExtras($attributes)
     {
         if (isset($attributes['extras'])) {
             foreach ($attributes['extras'] as $eKey=>$eVal) {
                 if (isset($attributes[$eKey])) {
                     $attributes[$eKey] = $eVal;
                     unset($attributes['extras'][$eKey]);
                 }
             }
         }
         return $attributes;
     }
 }