fix(html): expose getSVGDocument on frame owners

moli-renderer-v8/src/native_bridge/element.rs

@@ -3502,6 +3502,53 @@ fn frame_owner_content_document_getter_function<'s>(
     }
 }
 
+fn frame_owner_get_svg_document_callback<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'_, v8::Value>,
+    interface: &'static str,
+    local_name: &'static str,
+) {
+    let Ok((runtime_ptr, handle)) =
+        node_runtime_and_handle_from_object_or_detached(scope, args.this())
+    else {
+        throw_incompatible_method_receiver(scope, interface, "getSVGDocument");
+        return;
+    };
+    if !unsafe { &*runtime_ptr }
+        .dom_host()
+        .is_html_element_named(handle, local_name)
+    {
+        throw_incompatible_method_receiver(scope, interface, "getSVGDocument");
+        return;
+    }
+    frame_owner_content_document_getter_function(scope, args, rv);
+}
+
+fn iframe_get_svg_document_callback<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'_, v8::Value>,
+) {
+    frame_owner_get_svg_document_callback(scope, args, rv, "HTMLIFrameElement", "iframe");
+}
+
+fn embed_get_svg_document_callback<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'_, v8::Value>,
+) {
+    frame_owner_get_svg_document_callback(scope, args, rv, "HTMLEmbedElement", "embed");
+}
+
+fn object_get_svg_document_callback<'s>(
+    scope: &mut v8::PinScope<'s, '_>,
+    args: v8::FunctionCallbackArguments<'s>,
+    rv: v8::ReturnValue<'_, v8::Value>,
+) {
+    frame_owner_get_svg_document_callback(scope, args, rv, "HTMLObjectElement", "object");
+}
+
 fn frame_owner_content_window_getter_function<'s>(
     scope: &mut v8::PinScope<'s, '_>,
     args: v8::FunctionCallbackArguments<'s>,
@@ -4084,6 +4131,12 @@ struct HtmlEmbedElementUrlPrototypeDeclaration {
         setter_data = DomStringReflection::EmbedType
     )]
     r#type: (),
+    #[webapi(
+        method = "getSVGDocument",
+        length = 0,
+        callback = embed_get_svg_document_callback
+    )]
+    get_svg_document: (),
 }
 
 #[derive(WebApiFunctionTemplate)]
@@ -4260,6 +4313,12 @@ struct HtmlIFrameElementPrototypeDeclaration {
         receiver = web_api_interfaces::HTMLIFrameElement::is_instance
     )]
     content_window: (),
+    #[webapi(
+        method = "getSVGDocument",
+        length = 0,
+        callback = iframe_get_svg_document_callback
+    )]
+    get_svg_document: (),
 }
 
 #[derive(WebApiFunctionTemplate)]
@@ -5576,6 +5635,12 @@ struct HtmlObjectElementPrototypeDeclaration {
         getter = frame_owner_content_window_getter_function
     )]
     content_window: (),
+    #[webapi(
+        method = "getSVGDocument",
+        length = 0,
+        callback = object_get_svg_document_callback
+    )]
+    get_svg_document: (),
     #[webapi(
         accessor_property,
         getter = html_border_getter_function,

moli-renderer-v8/src/script_vm/tests/dom_elements/live_document.rs

@@ -2802,13 +2802,13 @@ fn detached_specialized_element_surfaces_are_inherited() {
     [id("details"), ["name", "open"], "details"],
     [id("dir"), ["compact"], "dir"],
     [id("dl"), ["compact"], "dl"],
-    [id("embed"), ["name"], "embed"],
+    [id("embed"), ["getSVGDocument", "name"], "embed"],
     [id("fieldset"), ["disabled", "elements", "form", "name", "type", "validity", "validationMessage", "willValidate", "checkValidity", "reportValidity", "setCustomValidity"], "fieldset"],
     [id("font"), ["color"], "font"],
     [id("form"), ["acceptCharset", "action", "autocomplete", "elements", "encoding", "enctype", "length", "method", "name", "noValidate", "rel", "relList", "target", "requestSubmit", "submit", "reset", "checkValidity", "reportValidity"], "form"],
     [detachedFrame, ["frameBorder", "longDesc", "marginHeight", "marginWidth", "name", "scrolling"], "frame"],
     [id("hr"), ["color", "noShade"], "hr"],
-    [id("iframe"), ["contentDocument", "contentWindow", "frameBorder", "longDesc", "marginHeight", "marginWidth", "name", "scrolling", "src", "srcdoc"], "iframe"],
+    [id("iframe"), ["contentDocument", "contentWindow", "frameBorder", "getSVGDocument", "longDesc", "marginHeight", "marginWidth", "name", "scrolling", "src", "srcdoc"], "iframe"],
     [id("image"), ["alt", "border", "decode", "decoding", "height", "hspace", "longDesc", "lowsrc", "name", "src", "srcset", "useMap", "vspace", "width"], "image"],
     [id("input"), ["accept", "alt", "autocomplete", "checked", "defaultChecked", "defaultValue", "dirName", "disabled", "files", "form", "formAction", "formEnctype", "formMethod", "formNoValidate", "formTarget", "height", "indeterminate", "labels", "list", "max", "maxLength", "min", "minLength", "multiple", "name", "pattern", "placeholder", "readOnly", "required", "size", "src", "step", "type", "validity", "validationMessage", "value", "valueAsDate", "valueAsNumber", "willValidate", "width", "checkValidity", "reportValidity", "setCustomValidity", "select", "setRangeText", "setSelectionRange", "showPicker", "stepDown", "stepUp"], "input"],
     [id("ins"), ["cite", "dateTime"], "ins"],
@@ -2821,7 +2821,7 @@ fn detached_specialized_element_surfaces_are_inherited() {
     [id("menu"), ["compact"], "menu"],
     [id("meta"), ["content", "httpEquiv", "media", "name", "scheme"], "meta"],
     [id("meter"), ["high", "labels", "low", "max", "min", "optimum", "value"], "meter"],
-    [id("object"), ["archive", "border", "code", "codeBase", "codeType", "contentDocument", "contentWindow", "data", "declare", "form", "hspace", "name", "standby", "type", "useMap", "validity", "validationMessage", "vspace", "willValidate", "checkValidity", "reportValidity", "setCustomValidity"], "object"],
+    [id("object"), ["archive", "border", "code", "codeBase", "codeType", "contentDocument", "contentWindow", "data", "declare", "form", "getSVGDocument", "hspace", "name", "standby", "type", "useMap", "validity", "validationMessage", "vspace", "willValidate", "checkValidity", "reportValidity", "setCustomValidity"], "object"],
     [id("ol"), ["compact", "reversed", "start", "type"], "ol"],
     [id("optgroup"), ["disabled", "label"], "optgroup"],
     [id("option"), ["defaultSelected", "disabled", "form", "index", "label", "selected", "text", "value"], "option"],

moli-renderer-v8/src/script_vm/tests/mod.rs

@@ -5851,6 +5851,73 @@ fn embedded_frame_owners_create_child_contexts_only_for_document_content() {
     );
 }
 
+#[test]
+fn frame_owner_get_svg_document_methods_share_content_document_semantics_and_enforce_brands() {
+    let mut vm = new_storage_test_vm("https://frame-owner-get-svg-document.test/");
+
+    let result = vm
+        .eval(
+            r#"
+(() => {
+  const root = document.body || document.documentElement || document;
+  const iframe = document.createElement("iframe");
+  iframe.srcdoc = "<body>iframe child</body>";
+  const embed = document.createElement("embed");
+  embed.type = "text/html";
+  embed.src = "about:blank";
+  const object = document.createElement("object");
+  object.type = "text/html";
+  object.data = "about:blank";
+  root.appendChild(iframe);
+  root.appendChild(embed);
+  root.appendChild(object);
+
+  const interfaces = [
+    [HTMLIFrameElement.prototype, iframe, "HTMLIFrameElement"],
+    [HTMLEmbedElement.prototype, embed, "HTMLEmbedElement"],
+    [HTMLObjectElement.prototype, object, "HTMLObjectElement"]
+  ];
+  const descriptors = interfaces.map(([prototype]) => {
+    const descriptor = Object.getOwnPropertyDescriptor(prototype, "getSVGDocument");
+    return {
+      type: typeof descriptor.value,
+      name: descriptor.value.name,
+      length: descriptor.value.length,
+      writable: descriptor.writable,
+      enumerable: descriptor.enumerable,
+      configurable: descriptor.configurable
+    };
+  });
+  const brandErrors = interfaces.map(([prototype], index) => {
+    try {
+      prototype.getSVGDocument.call(interfaces[(index + 1) % interfaces.length][1]);
+      return "accepted";
+    } catch (error) {
+      return error.name;
+    }
+  });
+
+  return JSON.stringify({
+    descriptors,
+    iframeMatches: iframe.getSVGDocument() !== null &&
+      iframe.getSVGDocument() === iframe.contentDocument,
+    embedHasDocument: embed.getSVGDocument() !== null,
+    objectMatches: object.getSVGDocument() !== null &&
+      object.getSVGDocument() === object.contentDocument,
+    brandErrors,
+    absentFromBase: !("getSVGDocument" in HTMLElement.prototype)
+  });
+})()
+"#,
+        )
+        .expect("frame owner getSVGDocument methods should evaluate");
+
+    assert_eq!(
+        result,
+        r#"{"descriptors":[{"type":"function","name":"getSVGDocument","length":0,"writable":true,"enumerable":true,"configurable":true},{"type":"function","name":"getSVGDocument","length":0,"writable":true,"enumerable":true,"configurable":true},{"type":"function","name":"getSVGDocument","length":0,"writable":true,"enumerable":true,"configurable":true}],"iframeMatches":true,"embedHasDocument":true,"objectMatches":true,"brandErrors":["TypeError","TypeError","TypeError"],"absentFromBase":true}"#
+    );
+}
+
 #[tokio::test]
 async fn failed_object_attribute_navigation_enters_fallback_without_recreating_child_context() {
     let (object_url, request_rx, release_tx, server) =