363 lines
10 KiB
PHP
363 lines
10 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @package Zend_View
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* @subpackage Helper
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @version $Id: Placeholder.php 7078 2007-12-11 14:29:33Z matthew $
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/** Zend_View_Helper_Placeholder_Container_Standalone */
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require_once 'Zend/View/Helper/Placeholder/Container/Standalone.php';
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/**
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* Zend_Layout_View_Helper_HeadMeta
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*
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* @see http://www.w3.org/TR/xhtml1/dtds.html
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* @uses Zend_View_Helper_Placeholder_Container_Standalone
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* @package Zend_View
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* @subpackage Helper
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_View_Helper_HeadMeta extends Zend_View_Helper_Placeholder_Container_Standalone
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{
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/**
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* Types of attributes
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* @var array
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*/
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protected $_typeKeys = array('name', 'http-equiv');
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protected $_requiredKeys = array('content');
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protected $_modifierKeys = array('lang', 'scheme');
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/**
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* @var string registry key
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*/
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protected $_regKey = 'Zend_View_Helper_HeadMeta';
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/**
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* Constructor
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*
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* Set separator to PHP_EOL
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*
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* @return void
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*/
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public function __construct()
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{
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parent::__construct();
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$this->setSeparator(PHP_EOL);
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}
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/**
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* Retrieve object instance; optionally add meta tag
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*
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* @param string $content
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* @param string $keyValue
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* @param string $keyType
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* @param array $modifiers
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* @param string $placement
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* @return Zend_View_Helper_HeadMeta
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*/
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public function headMeta($content = null, $keyValue = null, $keyType = 'name', $modifiers = array(), $placement = Zend_View_Helper_Placeholder_Container_Abstract::APPEND)
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{
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if ((null !== $content) && (null !== $keyValue)) {
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$item = $this->createData($keyType, $keyValue, $content, $modifiers);
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$action = strtolower($placement);
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switch ($action) {
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case 'append':
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case 'prepend':
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case 'set':
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$this->$action($item);
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break;
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default:
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$this->append($item);
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break;
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}
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}
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return $this;
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}
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protected function _normalizeType($type)
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{
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switch ($type) {
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case 'Name':
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return 'name';
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case 'HttpEquiv':
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return 'http-equiv';
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default:
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception(sprintf('Invalid type "%s" passed to _normalizeType', $type));
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}
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}
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/**
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* Overload method access
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*
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* Allows the following 'virtual' methods:
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* - appendName($keyValue, $content, $modifiers = array())
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* - offsetGetName($index, $keyValue, $content, $modifers = array())
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* - prependName($keyValue, $content, $modifiers = array())
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* - setName($keyValue, $content, $modifiers = array())
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* - appendHttpEquiv($keyValue, $content, $modifiers = array())
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* - offsetGetHttpEquiv($index, $keyValue, $content, $modifers = array())
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* - prependHttpEquiv($keyValue, $content, $modifiers = array())
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* - setHttpEquiv($keyValue, $content, $modifiers = array())
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*
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* @param string $method
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* @param array $args
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* @return Zend_View_Helper_HeadMeta
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*/
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public function __call($method, $args)
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{
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if (preg_match('/^(?P<action>set|(pre|ap)pend|offsetSet)(?P<type>Name|HttpEquiv)$/', $method, $matches)) {
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$action = $matches['action'];
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$type = $this->_normalizeType($matches['type']);
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$argc = count($args);
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$index = null;
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if ('offsetSet' == $action) {
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if (0 < $argc) {
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$index = array_shift($args);
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--$argc;
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}
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}
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if (2 > $argc) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Too few arguments provided; requires key value, and content');
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}
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if (3 > $argc) {
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$args[] = array();
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}
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$item = $this->createData($type, $args[0], $args[1], $args[2]);
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if ('offsetSet' == $action) {
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return $this->offsetSet($index, $item);
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}
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if ($action == 'set') {
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//var_dump($this->getContainer());
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}
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$this->$action($item);
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return $this;
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}
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return parent::__call($method, $args);
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}
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/**
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* Determine if item is valid
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*
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* @param mixed $item
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* @return boolean
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*/
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protected function _isValid($item)
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{
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if ((!$item instanceof stdClass)
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|| !isset($item->type)
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|| !isset($item->content)
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|| !isset($item->modifiers))
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{
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return false;
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}
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return true;
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}
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/**
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* Append
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*
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* @param string $value
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* @return void
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* @throws Zend_View_Exception
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*/
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public function append($value)
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{
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if (!$this->_isValid($value)) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Invalid value passed to append; please use appendMeta()');
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}
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return $this->getContainer()->append($value);
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}
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/**
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* OffsetSet
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*
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* @param string|int $index
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* @param string $value
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* @return void
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* @throws Zend_View_Exception
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*/
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public function offsetSet($index, $value)
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{
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if (!$this->_isValid($value)) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Invalid value passed to offsetSet; please use offsetSetMeta()');
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}
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return $this->getContainer()->offsetSet($index, $value);
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}
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/**
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* OffsetUnset
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*
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* @param string|int $index
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* @return void
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* @throws Zend_View_Exception
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*/
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public function offsetUnset($index)
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{
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if (!in_array($index, $this->getContainer()->getKeys())) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Invalid index passed to offsetUnset.');
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}
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return $this->getContainer()->offsetUnset($index);
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}
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/**
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* Prepend
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*
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* @param string $value
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* @return void
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* @throws Zend_View_Exception
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*/
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public function prepend($value)
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{
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if (!$this->_isValid($value)) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Invalid value passed to prepend; please use prependMeta()');
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}
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return $this->getContainer()->prepend($value);
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}
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/**
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* Set
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*
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* @param string $value
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* @return void
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* @throws Zend_View_Exception
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*/
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public function set($value)
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{
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if (!$this->_isValid($value)) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception('Invalid value passed to set; please use setMeta()');
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}
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$container = $this->getContainer();
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foreach ($container->getArrayCopy() as $index => $item) {
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if ($item->type == $value->type && $item->{$item->type} == $value->{$value->type}) {
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$this->offsetUnset($index);
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}
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}
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return $this->append($value);
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}
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/**
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* Build meta HTML string
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*
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* @param string $type
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* @param string $typeValue
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* @param string $content
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* @param array $modifiers
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* @return string
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*/
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public function itemToString(stdClass $item)
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{
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if (!in_array($item->type, $this->_typeKeys)) {
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require_once 'Zend/View/Exception.php';
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throw new Zend_View_Exception(sprintf('Invalid type "%s" provided for meta', $item->type));
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}
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$type = $item->type;
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$modifiersString = '';
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foreach ($item->modifiers as $key => $value) {
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if (!in_array($key, $this->_modifierKeys)) {
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continue;
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}
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$modifiersString .= $key . '="' . $this->_escape($value) . '" ';
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}
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if ($this->view instanceof Zend_View_Abstract) {
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$tpl = ($this->view->doctype()->isXhtml())
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? '<meta %s="%s" content="%s" %s/>'
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: '<meta %s="%s" content="%s" %s>';
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} else {
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$tpl = '<meta %s="%s" content="%s" %s/>';
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}
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$meta = sprintf(
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$tpl,
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$type,
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$this->_escape($item->$type),
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$this->_escape($item->content),
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$modifiersString
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);
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return $meta;
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}
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/**
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* Render placeholder as string
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*
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* @param string|int $indent
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* @return string
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*/
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public function toString($indent = null)
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{
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$indent = (null !== $indent)
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? $this->getWhitespace($indent)
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: $this->getIndent();
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$items = array();
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$this->getContainer()->ksort();
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try {
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foreach ($this as $item) {
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$items[] = $this->itemToString($item);
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}
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} catch (Zend_View_Exception $e) {
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trigger_error($e->getMessage(), E_USER_WARNING);
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return '';
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}
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return $indent . implode($this->_escape($this->getSeparator()) . $indent, $items);
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}
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/**
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* Create data item for inserting into stack
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*
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* @param string $type
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* @param string $typeValue
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* @param string $content
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* @param array $modifiers
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* @return stdClass
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*/
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public function createData($type, $typeValue, $content, array $modifiers)
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{
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$data = new stdClass;
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$data->type = $type;
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$data->$type = $typeValue;
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$data->content = $content;
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$data->modifiers = $modifiers;
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return $data;
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}
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}
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