LibWeb: Add Element::is_document_element() helper

This is *not* the same as `Node::is_document()`, just to be confusing. It basically means it's the root element.
Author: https://github.com/AtkinsSJ Commit: https://github.com/SerenityOS/serenity/commit/9f83c0f0da Pull-request: https://github.com/SerenityOS/serenity/pull/20593 Reviewed-by: https://github.com/awesomekling
2023-08-12 17:47:33 +01:00 · 2023-08-12 17:47:33 +01:00 · 9f83c0f0da · 2024-07-17 00:57:24 +09:00
commit 9f83c0f0da
parent 7690f76f92
2 changed files with 7 additions and 0 deletions
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@ -639,6 +639,12 @@ bool Element::is_target() const
    return document().target_element() == this;
 }

+// https://dom.spec.whatwg.org/#document-element
+bool Element::is_document_element() const
+{
+    return document().document_element() == this;
+}
+
 JS::NonnullGCPtr<HTMLCollection> Element::get_elements_by_class_name(DeprecatedFlyString const& class_names)
 {
    Vector<FlyString> list_of_class_names;
--- a/Userland/Libraries/LibWeb/DOM/Element.h
+++ b/Userland/Libraries/LibWeb/DOM/Element.h
@ -169,6 +169,7 @@ public:
    bool is_focused() const;
    bool is_active() const;
    bool is_target() const;
+    bool is_document_element() const;

    JS::NonnullGCPtr<HTMLCollection> get_elements_by_class_name(DeprecatedFlyString const&);