learnpress / vendor / symfony / css-selector / XPath / Extension / HtmlExtension.php

HtmlExtension.php in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses 4.4.8, at vendor/symfony/css-selector/XPath/Extension/HtmlExtension.php

186 lines 6.2 KB

Raw Download Zip

1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <fabien@symfony.com>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11
12	namespace Symfony\Component\CssSelector\XPath\Extension;
13
14	use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
15	use Symfony\Component\CssSelector\Node\FunctionNode;
16	use Symfony\Component\CssSelector\XPath\Translator;
17	use Symfony\Component\CssSelector\XPath\XPathExpr;
18
19	/**
20	* XPath expression translator HTML extension.
21	*
22	* This component is a port of the Python cssselect library,
23	* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
24	*
25	* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
26	*
27	* @internal
28	*/
29	class HtmlExtension extends AbstractExtension
30	{
31	// Each disabled fieldset ancestor disables the element, except the one whose first legend
32	// child the element sits in. Those excepted fieldsets are exactly the parents of the
33	// ancestors-or-self that are a first legend child of a disabled fieldset, one for one, so
34	// the element is disabled as soon as the first count exceeds the second one. Counting keeps
35	// this to two cheap ancestor walks instead of a predicate run on every ancestor.
36	private const DISABLING_FIELDSET = 'count(ancestor::fieldset[@disabled]) > count(ancestor-or-self::legend[not(preceding-sibling::legend)][parent::fieldset[@disabled]])';
37
38	public function __construct(Translator $translator)
39	{
40	$translator
41	->getExtension('node')
42	->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true)
43	->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true);
44	}
45
46	public function getPseudoClassTranslators(): array
47	{
48	return [
49	'checked' => $this->translateChecked(...),
50	'link' => $this->translateLink(...),
51	'disabled' => $this->translateDisabled(...),
52	'enabled' => $this->translateEnabled(...),
53	'selected' => $this->translateSelected(...),
54	'invalid' => $this->translateInvalid(...),
55	'hover' => $this->translateHover(...),
56	'visited' => $this->translateVisited(...),
57	];
58	}
59
60	public function getFunctionTranslators(): array
61	{
62	return [
63	'lang' => $this->translateLang(...),
64	];
65	}
66
67	public function translateChecked(XPathExpr $xpath): XPathExpr
68	{
69	return $xpath->addCondition(
70	'(@checked '
71	."and (name(.) = 'input' or name(.) = 'command')"
72	."and (@type = 'checkbox' or @type = 'radio'))"
73	);
74	}
75
76	public function translateLink(XPathExpr $xpath): XPathExpr
77	{
78	return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')");
79	}
80
81	public function translateDisabled(XPathExpr $xpath): XPathExpr
82	{
83	return $xpath->addCondition(
84	'('
85	.'@disabled and'
86	.'('
87	."(name(.) = 'input' and @type != 'hidden')"
88	." or name(.) = 'button'"
89	." or name(.) = 'select'"
90	." or name(.) = 'textarea'"
91	." or name(.) = 'command'"
92	." or name(.) = 'fieldset'"
93	." or name(.) = 'optgroup'"
94	." or name(.) = 'option'"
95	.')'
96	.') or ('
97	."(name(.) = 'input' and @type != 'hidden')"
98	." or name(.) = 'button'"
99	." or name(.) = 'select'"
100	." or name(.) = 'textarea'"
101	." or name(.) = 'fieldset'"
102	.')'
103	.' and '.self::DISABLING_FIELDSET
104	);
105	}
106
107	public function translateEnabled(XPathExpr $xpath): XPathExpr
108	{
109	return $xpath->addCondition(
110	'('
111	.'@href and ('
112	."name(.) = 'a'"
113	." or name(.) = 'link'"
114	." or name(.) = 'area'"
115	.')'
116	.') or ('
117	.'('
118	."name(.) = 'command'"
119	." or name(.) = 'optgroup'"
120	.')'
121	.' and not(@disabled)'
122	.') or ('
123	.'('
124	."(name(.) = 'input' and @type != 'hidden')"
125	." or name(.) = 'button'"
126	." or name(.) = 'select'"
127	." or name(.) = 'textarea'"
128	." or name(.) = 'keygen'"
129	." or name(.) = 'fieldset'"
130	.')'
131	.' and not(@disabled or '.self::DISABLING_FIELDSET.')'
132	.') or ('
133	."name(.) = 'option' and not("
134	.'@disabled or ancestor::optgroup[@disabled]'
135	.')'
136	.')'
137	);
138	}
139
140	/**
141	* @throws ExpressionErrorException
142	*/
143	public function translateLang(XPathExpr $xpath, FunctionNode $function): XPathExpr
144	{
145	$arguments = $function->getArguments();
146	foreach ($arguments as $token) {
147	if (!($token->isString() \|\| $token->isIdentifier())) {
148	throw new ExpressionErrorException('Expected a single string or identifier for :lang(), got '.implode(', ', $arguments));
149	}
150	}
151
152	return $xpath->addCondition(\sprintf(
153	'ancestor-or-self::*[@lang][1][starts-with(concat('
154	."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')"
155	.', %s)]',
156	'lang',
157	Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-')
158	));
159	}
160
161	public function translateSelected(XPathExpr $xpath): XPathExpr
162	{
163	return $xpath->addCondition("(@selected and name(.) = 'option')");
164	}
165
166	public function translateInvalid(XPathExpr $xpath): XPathExpr
167	{
168	return $xpath->addCondition('0');
169	}
170
171	public function translateHover(XPathExpr $xpath): XPathExpr
172	{
173	return $xpath->addCondition('0');
174	}
175
176	public function translateVisited(XPathExpr $xpath): XPathExpr
177	{
178	return $xpath->addCondition('0');
179	}
180
181	public function getName(): string
182	{
183	return 'html';
184	}
185	}
186