Auto merge of #25393 - teapotd:option-constructor, r=jdm

Implement HTMLOptionElement named constructor

This change implements `Option` named constructor for `HTMLOptionElement`.

---
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #25380
- [X] There are tests for these changes

1 files changed, 36 insertions, 2 deletions

diff --git a/components/script/dom/htmloptionelement.rs b/components/script/dom/htmloptionelement.rs
index 3893aea95ab..4ebb2860a79 100644
--- a/components/script/dom/htmloptionelement.rs
+++ b/components/script/dom/htmloptionelement.rs
@@ -8,12 +8,14 @@ use crate::dom::bindings::codegen::Bindings::HTMLOptionElementBinding;
 use crate::dom::bindings::codegen::Bindings::HTMLOptionElementBinding::HTMLOptionElementMethods;
 use crate::dom::bindings::codegen::Bindings::HTMLSelectElementBinding::HTMLSelectElementBinding::HTMLSelectElementMethods;
 use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
+use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
+use crate::dom::bindings::error::Fallible;
 use crate::dom::bindings::inheritance::Castable;
 use crate::dom::bindings::root::DomRoot;
 use crate::dom::bindings::str::DOMString;
 use crate::dom::characterdata::CharacterData;
 use crate::dom::document::Document;
-use crate::dom::element::{AttributeMutation, Element};
+use crate::dom::element::{AttributeMutation, CustomElementCreationMode, Element, ElementCreator};
 use crate::dom::htmlelement::HTMLElement;
 use crate::dom::htmlformelement::HTMLFormElement;
 use crate::dom::htmloptgroupelement::HTMLOptGroupElement;
@@ -22,8 +24,9 @@ use crate::dom::htmlselectelement::HTMLSelectElement;
 use crate::dom::node::{BindContext, Node, ShadowIncluding, UnbindContext};
 use crate::dom::text::Text;
 use crate::dom::virtualmethods::VirtualMethods;
+use crate::dom::window::Window;
 use dom_struct::dom_struct;
-use html5ever::{LocalName, Prefix};
+use html5ever::{LocalName, Prefix, QualName};
 use std::cell::Cell;
 use style::element_state::ElementState;
 use style::str::{split_html_space_chars, str_join};
@@ -72,6 +75,37 @@ impl HTMLOptionElement {
         )
     }
 
+    // https://html.spec.whatwg.org/multipage/#dom-option
+    pub fn Option(
+        window: &Window,
+        text: DOMString,
+        value: Option<DOMString>,
+        default_selected: bool,
+        selected: bool,
+    ) -> Fallible<DomRoot<HTMLOptionElement>> {
+        let element = Element::create(
+            QualName::new(None, ns!(html), local_name!("option")),
+            None,
+            &window.Document(),
+            ElementCreator::ScriptCreated,
+            CustomElementCreationMode::Synchronous,
+        );
+
+        let option = DomRoot::downcast::<HTMLOptionElement>(element).unwrap();
+
+        if !text.is_empty() {
+            option.upcast::<Node>().SetTextContent(Some(text))
+        }
+
+        if let Some(val) = value {
+            option.SetValue(val)
+        }
+
+        option.SetDefaultSelected(default_selected);
+        option.set_selectedness(selected);
+        Ok(option)
+    }
+
     pub fn set_selectedness(&self, selected: bool) {
         self.selectedness.set(selected);
     }