2010-03-31 07:42:18 +01:00
|
|
|
<?php
|
|
|
|
|
|
|
|
namespace Symfony\Components\CssSelector\Node;
|
|
|
|
|
|
|
|
use Symfony\Components\CssSelector\SyntaxError;
|
|
|
|
|
|
|
|
/*
|
2010-04-07 01:51:29 +01:00
|
|
|
* This file is part of the Symfony package.
|
2010-03-31 07:42:18 +01:00
|
|
|
*
|
|
|
|
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
|
|
|
|
*
|
|
|
|
* For the full copyright and license information, please view the LICENSE
|
|
|
|
* file that was distributed with this source code.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* PseudoNode represents a "selector:ident" node.
|
|
|
|
*
|
|
|
|
* This component is a port of the Python lxml library,
|
|
|
|
* which is copyright Infrae and distributed under the BSD license.
|
|
|
|
*
|
2010-04-07 01:51:29 +01:00
|
|
|
* @package Symfony
|
|
|
|
* @subpackage Components_CssSelector
|
2010-03-31 07:42:18 +01:00
|
|
|
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
|
|
|
|
*/
|
|
|
|
class PseudoNode implements NodeInterface
|
|
|
|
{
|
|
|
|
static protected $unsupported = array(
|
|
|
|
'indeterminate', 'first-line', 'first-letter',
|
|
|
|
'selection', 'before', 'after', 'link', 'visited',
|
|
|
|
'active', 'focus', 'hover',
|
|
|
|
);
|
|
|
|
|
|
|
|
protected $element;
|
|
|
|
protected $type;
|
|
|
|
protected $ident;
|
|
|
|
|
2010-04-04 18:11:32 +01:00
|
|
|
/**
|
|
|
|
* @throws SyntaxError When incorrect PseudoNode type is given
|
|
|
|
*/
|
2010-03-31 07:42:18 +01:00
|
|
|
public function __construct($element, $type, $ident)
|
|
|
|
{
|
|
|
|
$this->element = $element;
|
|
|
|
|
|
|
|
if (!in_array($type, array(':', '::')))
|
|
|
|
{
|
|
|
|
throw new SyntaxError(sprintf('The PseudoNode type can only be : or :: (%s given).', $type));
|
|
|
|
}
|
|
|
|
|
|
|
|
$this->type = $type;
|
|
|
|
$this->ident = $ident;
|
|
|
|
}
|
|
|
|
|
|
|
|
public function __toString()
|
|
|
|
{
|
|
|
|
return sprintf('%s[%s%s%s]', __CLASS__, $this->element, $this->type, $this->ident);
|
|
|
|
}
|
|
|
|
|
2010-04-04 18:11:32 +01:00
|
|
|
/**
|
|
|
|
* @throws SyntaxError When unsupported or unknown pseudo-class is found
|
|
|
|
*/
|
2010-03-31 07:42:18 +01:00
|
|
|
public function toXpath()
|
|
|
|
{
|
|
|
|
$el_xpath = $this->element->toXpath();
|
|
|
|
|
|
|
|
if (in_array($this->ident, self::$unsupported))
|
|
|
|
{
|
|
|
|
throw new SyntaxError(sprintf("The pseudo-class %s is unsupported", $this->ident));
|
|
|
|
}
|
|
|
|
$method = 'xpath_'.str_replace('-', '_', $this->ident);
|
|
|
|
if (!method_exists($this, $method))
|
|
|
|
{
|
|
|
|
throw new SyntaxError(sprintf("The pseudo-class %s is unknown", $this->ident));
|
|
|
|
}
|
|
|
|
|
|
|
|
return $this->$method($el_xpath);
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_checked($xpath)
|
|
|
|
{
|
2010-04-03 00:48:10 +01:00
|
|
|
// FIXME: is this really all the elements?
|
2010-03-31 07:42:18 +01:00
|
|
|
$xpath->addCondition("(@selected or @checked) and (name(.) = 'input' or name(.) = 'option')");
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
2010-04-04 18:11:32 +01:00
|
|
|
/**
|
|
|
|
* @throws SyntaxError If this element is the root element
|
|
|
|
*/
|
2010-03-31 07:42:18 +01:00
|
|
|
protected function xpath_root($xpath)
|
|
|
|
{
|
2010-04-03 00:48:10 +01:00
|
|
|
// if this element is the root element
|
2010-03-31 07:42:18 +01:00
|
|
|
throw new SyntaxError();
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_first_child($xpath)
|
|
|
|
{
|
|
|
|
$xpath->addStarPrefix();
|
|
|
|
$xpath->addNameTest();
|
|
|
|
$xpath->addCondition('position() = 1');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_last_child($xpath)
|
|
|
|
{
|
|
|
|
$xpath->addStarPrefix();
|
|
|
|
$xpath->addNameTest();
|
|
|
|
$xpath->addCondition('position() = last()');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_first_of_type($xpath)
|
|
|
|
{
|
|
|
|
if ($xpath->getElement() == '*')
|
|
|
|
{
|
|
|
|
throw new SyntaxError("*:first-of-type is not implemented");
|
|
|
|
}
|
|
|
|
$xpath->addStarPrefix();
|
|
|
|
$xpath->addCondition('position() = 1');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
2010-04-04 18:11:32 +01:00
|
|
|
/**
|
|
|
|
* @throws SyntaxError Because *:last-of-type is not implemented
|
|
|
|
*/
|
2010-03-31 07:42:18 +01:00
|
|
|
protected function xpath_last_of_type($xpath)
|
|
|
|
{
|
|
|
|
if ($xpath->getElement() == '*')
|
|
|
|
{
|
|
|
|
throw new SyntaxError("*:last-of-type is not implemented");
|
|
|
|
}
|
|
|
|
$xpath->addStarPrefix();
|
|
|
|
$xpath->addCondition('position() = last()');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_only_child($xpath)
|
|
|
|
{
|
|
|
|
$xpath->addNameTest();
|
|
|
|
$xpath->addStarPrefix();
|
|
|
|
$xpath->addCondition('last() = 1');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
2010-04-04 18:11:32 +01:00
|
|
|
/**
|
|
|
|
* @throws SyntaxError Because *:only-of-type is not implemented
|
|
|
|
*/
|
2010-03-31 07:42:18 +01:00
|
|
|
protected function xpath_only_of_type($xpath)
|
|
|
|
{
|
|
|
|
if ($xpath->getElement() == '*')
|
|
|
|
{
|
|
|
|
throw new SyntaxError("*:only-of-type is not implemented");
|
|
|
|
}
|
|
|
|
$xpath->addCondition('last() = 1');
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
|
|
|
|
protected function xpath_empty($xpath)
|
|
|
|
{
|
|
|
|
$xpath->addCondition("not(*) and not(normalize-space())");
|
|
|
|
|
|
|
|
return $xpath;
|
|
|
|
}
|
|
|
|
}
|