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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\View\Helper;
/**
* Renders <html> tag (both opening and closing) of a web page, to which some custom
* attributes can be added dynamically.
*
* @author Nikola Posa <posa.nikola@gmail.com>
*/
class HtmlTag extends AbstractHtmlElement
{
/**
* Attributes for the <html> tag.
*
* @var array
*/
protected $attributes = array();
/**
* Whether to pre-set appropriate attributes in accordance
* with the currently set DOCTYPE.
*
* @var bool
*/
protected $useNamespaces = false;
/**
* @var bool
*/
private $handledNamespaces = false;
/**
* Retrieve object instance; optionally add attributes.
*
* @param array $attribs
* @return self
*/
public function __invoke(array $attribs = array())
{
if (!empty($attribs)) {
$this->setAttributes($attribs);
}
return $this;
}
/**
* Set new attribute.
*
* @param string $attrName
* @param string $attrValue
* @return self
*/
public function setAttribute($attrName, $attrValue)
{
$this->attributes[$attrName] = $attrValue;
return $this;
}
/**
* Add new or overwrite the existing attributes.
*
* @param array $attribs
* @return self
*/
public function setAttributes(array $attribs)
{
foreach ($attribs as $name => $value) {
$this->setAttribute($name, $value);
}
return $this;
}
/**
* @return array
*/
public function getAttributes()
{
return $this->attributes;
}
/**
* @param bool $useNamespaces
* @return self
*/
public function setUseNamespaces($useNamespaces)
{
$this->useNamespaces = (bool) $useNamespaces;
return $this;
}
/**
* @return bool
*/
public function getUseNamespaces()
{
return $this->useNamespaces;
}
/**
* Render opening tag.
*
* @return string
*/
public function openTag()
{
$this->handleNamespaceAttributes();
return sprintf('<html%s>', $this->htmlAttribs($this->attributes));
}
protected function handleNamespaceAttributes()
{
if ($this->useNamespaces && !$this->handledNamespaces) {
if (method_exists($this->view, 'plugin')) {
$doctypeAttributes = array();
if ($this->view->plugin('doctype')->isXhtml()) {
$doctypeAttributes = array('xmlns' => 'http://www.w3.org/1999/xhtml');
}
if (!empty($doctypeAttributes)) {
$this->attributes = array_merge($doctypeAttributes, $this->attributes);
}
}
$this->handledNamespaces = true;
}
}
/**
* Render closing tag.
*
* @return string
*/
public function closeTag()
{
return '</html>';
}
}
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