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| 1 | <?php |
| 2 | |
| 3 | namespace pvc\html\rules\content_rules\permitted; |
| 4 | |
| 5 | use pvc\html\rules\AbstractRule; |
| 6 | use pvc\interfaces\html\content_model\ContentCategory; |
| 7 | use pvc\interfaces\html\content_model\ContentPermission; |
| 8 | use pvc\interfaces\html\dom\DomNodeInterface; |
| 9 | use pvc\interfaces\html\rules\ContentRuleInterface; |
| 10 | |
| 11 | /** |
| 12 | * TODO: major difficulty: no way to know the content model until the |
| 13 | * page is served and we can test whether javascript has been enabled..... |
| 14 | */ |
| 15 | class NoScriptJsDisabledContentRule extends AbstractRule implements ContentRuleInterface |
| 16 | { |
| 17 | public function test(DomNodeInterface $content): ContentPermission |
| 18 | { |
| 19 | /** |
| 20 | * if content appears inside head element, then it must be meta, link, |
| 21 | * or style tag |
| 22 | */ |
| 23 | $nameEqualsHead = function (DomNodeInterface $node) { return $node->getDomElement()->hasName('head'); }; |
| 24 | |
| 25 | if ($content->hasParentWith($nameEqualsHead)) { |
| 26 | $contentName = $content->getDomElement()->getName(); |
| 27 | if (in_array($contentName,['link', 'style', 'meta'])) return ContentPermission::GRANTED; |
| 28 | } else { |
| 29 | /** |
| 30 | * if it is not inside the head element, then it must be in the body element |
| 31 | */ |
| 32 | if ($content->getContentModel()->hasCategory(ContentCategory::Transparent) && |
| 33 | ($content->getDomElement()->getName() !== 'noscript')) return ContentPermission::GRANTED; |
| 34 | } |
| 35 | return ContentPermission::DENIED; |
| 36 | } |
| 37 | } |