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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
*/
/**
* @see Zend_Form_Decorator_Abstract
*/
/**
* Zend_Form_Decorator_Element_HtmlTag
*
* Wraps content in an HTML block tag.
*
* Options accepted are:
* - tag: tag to use in decorator
* - noAttribs: do not render attributes in the opening tag
* - placement: 'append' or 'prepend'. If 'append', renders opening and
* closing tag after content; if prepend, renders opening and closing tag
* before content.
* - openOnly: render opening tag only
* - closeOnly: render closing tag only
*
* Any other options passed are processed as HTML attributes of the 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_HtmlTag extends Zend_Form_Decorator_Abstract
{
/**
* Character encoding to use when escaping attributes
* @var string
*/
protected $_encoding;
/**
* Placement; default to surround content
* @var string
*/
protected $_placement = null;
/**
* HTML tag to use
* @var string
*/
protected $_tag;
/**
* @var Zend_Filter
*/
protected $_tagFilter;
/**
* Convert options to tag attributes
*
* @return string
*/
protected function _htmlAttribs(array $attribs)
{
$xhtml = '';
$enc = $this->_getEncoding();
foreach ((array) $attribs as $key => $val) {
$key = htmlspecialchars($key, ENT_COMPAT, $enc);
if (is_array($val)) {
if (array_key_exists('callback', $val)
&& is_callable($val['callback'])
) {
$val = call_user_func($val['callback'], $this);
} else {
$val = implode(' ', $val);
}
}
$val = htmlspecialchars($val ?? '', ENT_COMPAT, $enc);
$xhtml .= " $key=\"$val\"";
}
return $xhtml;
}
/**
* Normalize tag
*
* Ensures tag is alphanumeric characters only, and all lowercase.
*
* @param string $tag
* @return string
*/
public function normalizeTag($tag)
{
if (!isset($this->_tagFilter)) {
$this->_tagFilter = new Zend_Filter();
$this->_tagFilter->addFilter(new Zend_Filter_Alnum())
->addFilter(new Zend_Filter_StringToLower());
}
return $this->_tagFilter->filter($tag);
}
/**
* Set tag to use
*
* @param string $tag
* @return Zend_Form_Decorator_HtmlTag
*/
public function setTag($tag)
{
$this->_tag = $this->normalizeTag($tag);
return $this;
}
/**
* Get tag
*
* If no tag is registered, either via setTag() or as an option, uses 'div'.
*
* @return string
*/
public function getTag()
{
if (null === $this->_tag) {
if (null === ($tag = $this->getOption('tag'))) {
$this->setTag('div');
} else {
$this->setTag($tag);
$this->removeOption('tag');
}
}
return $this->_tag;
}
/**
* Get the formatted open tag
*
* @param string $tag
* @param array $attribs
* @return string
*/
protected function _getOpenTag($tag, array $attribs = null)
{
$html = '<' . $tag;
if (null !== $attribs) {
$html .= $this->_htmlAttribs($attribs);
}
$html .= '>';
return $html;
}
/**
* Get formatted closing tag
*
* @param string $tag
* @return string
*/
protected function _getCloseTag($tag)
{
return '</' . $tag . '>';
}
/**
* Render content wrapped in an HTML tag
*
* @param string $content
* @return string
*/
public function render($content)
{
$tag = $this->getTag();
$placement = $this->getPlacement();
$noAttribs = $this->getOption('noAttribs');
$openOnly = $this->getOption('openOnly');
$closeOnly = $this->getOption('closeOnly');
$this->removeOption('noAttribs');
$this->removeOption('openOnly');
$this->removeOption('closeOnly');
$attribs = null;
if (!$noAttribs) {
$attribs = $this->getOptions();
}
switch ($placement) {
case self::APPEND:
if ($closeOnly) {
return $content . $this->_getCloseTag($tag);
}
if ($openOnly) {
return $content . $this->_getOpenTag($tag, $attribs);
}
return $content
. $this->_getOpenTag($tag, $attribs)
. $this->_getCloseTag($tag);
case self::PREPEND:
if ($closeOnly) {
return $this->_getCloseTag($tag) . $content;
}
if ($openOnly) {
return $this->_getOpenTag($tag, $attribs) . $content;
}
return $this->_getOpenTag($tag, $attribs)
. $this->_getCloseTag($tag)
. $content;
default:
return (($openOnly || !$closeOnly) ? $this->_getOpenTag($tag, $attribs) : '')
. $content
. (($closeOnly || !$openOnly) ? $this->_getCloseTag($tag) : '');
}
}
/**
* Get encoding for use with htmlspecialchars()
*
* @return string
*/
protected function _getEncoding()
{
if (null !== $this->_encoding) {
return $this->_encoding;
}
if (null === ($element = $this->getElement())) {
$this->_encoding = 'UTF-8';
} elseif (null === ($view = $element->getView())) {
$this->_encoding = 'UTF-8';
} elseif (!$view instanceof Zend_View_Abstract
&& !method_exists($view, 'getEncoding')
) {
$this->_encoding = 'UTF-8';
} else {
$this->_encoding = $view->getEncoding();
}
return $this->_encoding;
}
}
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