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https://github.com/smogon/pokemon-showdown-client.git
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68 lines
2.0 KiB
PHP
68 lines
2.0 KiB
PHP
<?php
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/**
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* @file
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* @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
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*/
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namespace Wikimedia\CSS\Sanitizer;
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use Wikimedia\CSS\Objects\AtRule;
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use Wikimedia\CSS\Objects\CSSObject;
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use Wikimedia\CSS\Objects\Rule;
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use Wikimedia\CSS\Util;
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/**
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* Sanitizes the margin at-rules inside a CSS \@page rule
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* @see https://www.w3.org/TR/2018/WD-css-page-3-20181018/
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*/
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class MarginAtRuleSanitizer extends RuleSanitizer {
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/** @var string[] */
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protected static $marginRuleNames = [
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'top-left-corner', 'top-left', 'top-center', 'top-right', 'top-right-corner',
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'bottom-left-corner', 'bottom-left', 'bottom-center', 'bottom-right', 'bottom-right-corner',
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'left-top', 'left-middle', 'left-bottom', 'right-top', 'right-middle', 'right-bottom',
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];
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/** @var PropertySanitizer */
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protected $propertySanitizer;
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/**
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* @param PropertySanitizer $propertySanitizer Sanitizer for declarations
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*/
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public function __construct( PropertySanitizer $propertySanitizer ) {
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$this->propertySanitizer = $propertySanitizer;
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}
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/** @inheritDoc */
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public function handlesRule( Rule $rule ) {
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return $rule instanceof AtRule &&
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in_array( strtolower( $rule->getName() ), self::$marginRuleNames, true );
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}
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/** @inheritDoc */
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protected function doSanitize( CSSObject $object ) {
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if ( !$object instanceof AtRule || !$this->handlesRule( $object ) ) {
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$this->sanitizationError( 'expected-page-margin-at-rule', $object );
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return null;
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}
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if ( $object->getBlock() === null ) {
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$this->sanitizationError( 'at-rule-block-required', $object, [ $object->getName() ] );
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return null;
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}
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// No non-whitespace prelude allowed
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if ( Util::findFirstNonWhitespace( $object->getPrelude() ) ) {
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$this->sanitizationError( 'invalid-page-margin-at-rule', $object, [ $object->getName() ] );
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return null;
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}
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$ret = clone $object;
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$this->fixPreludeWhitespace( $ret, false );
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$this->sanitizeDeclarationBlock( $ret->getBlock(), $this->propertySanitizer );
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return $ret;
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}
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}
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