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servo/components/script/dom/bindings/htmlconstructor.rs
Josh Matthews 0e8ac3fdac Formatting.
2023-05-28 23:54:02 -04:00

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::codegen::Bindings::HTMLAnchorElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLAreaElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLAudioElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLBRElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLBodyElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLButtonElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLCanvasElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDListElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDataElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDataListElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDetailsElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDialogElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDirectoryElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLDivElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLEmbedElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLFieldSetElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLFontElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLFormElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLFrameElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLFrameSetElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLHRElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLHeadElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLHeadingElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLHtmlElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLIFrameElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLImageElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLInputElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLLIElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLLabelElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLLegendElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLLinkElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLMapElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLMenuElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLMetaElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLMeterElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLModElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLOListElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLObjectElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLOptGroupElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLOptionElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLOutputElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLParagraphElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLParamElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLPictureElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLPreElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLProgressElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLQuoteElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLScriptElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLSelectElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLSourceElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLSpanElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLStyleElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableCaptionElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableCellElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableColElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableRowElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTableSectionElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTemplateElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTimeElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTitleElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLTrackElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLUListElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLVideoElementBinding;
use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
use crate::dom::bindings::conversions::DerivedFrom;
use crate::dom::bindings::error::{throw_dom_exception, Error};
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::reflector::DomObject;
use crate::dom::bindings::root::DomRoot;
use crate::dom::create::create_native_html_element;
use crate::dom::customelementregistry::{ConstructionStackEntry, CustomElementState};
use crate::dom::element::{Element, ElementCreator};
use crate::dom::globalscope::GlobalScope;
use crate::dom::htmlelement::HTMLElement;
use crate::dom::window::Window;
use crate::script_runtime::JSContext;
use crate::script_thread::ScriptThread;
use html5ever::interface::QualName;
use html5ever::LocalName;
use js::conversions::ToJSValConvertible;
use js::glue::{UnwrapObjectDynamic, UnwrapObjectStatic};
use js::jsapi::{CallArgs, CurrentGlobalOrNull};
use js::jsapi::{JSAutoRealm, JSObject};
use js::jsval::UndefinedValue;
use js::rust::wrappers::{JS_GetProperty, JS_SetPrototype, JS_WrapObject};
use js::rust::{HandleObject, MutableHandleObject, MutableHandleValue};
use std::ptr;
// https://html.spec.whatwg.org/multipage/#htmlconstructor
unsafe fn html_constructor(
cx: JSContext,
window: &Window,
call_args: &CallArgs,
check_type: fn(&Element) -> bool,
get_proto_object: fn(JSContext, HandleObject, MutableHandleObject),
) -> Result<(), ()> {
let document = window.Document();
let global = window.upcast::<GlobalScope>();
// Step 1
let registry = window.CustomElements();
// Step 2 https://html.spec.whatwg.org/multipage/#htmlconstructor
// The custom element definition cannot use an element interface as its constructor
// The new_target might be a cross-compartment wrapper. Get the underlying object
// so we can do the spec's object-identity checks.
rooted!(in(*cx) let new_target_unwrapped = UnwrapObjectDynamic(call_args.new_target().to_object(), *cx, 1));
if new_target_unwrapped.is_null() {
throw_dom_exception(cx, global, Error::Type("new.target is null".to_owned()));
return Err(());
}
if call_args.callee() == new_target_unwrapped.get() {
throw_dom_exception(
cx,
global,
Error::Type("new.target must not be the active function object".to_owned()),
);
return Err(());
}
// Step 3
rooted!(in(*cx) let new_target = call_args.new_target().to_object());
let definition = match registry.lookup_definition_by_constructor(new_target.handle()) {
Some(definition) => definition,
None => {
throw_dom_exception(
cx,
global,
Error::Type("No custom element definition found for new.target".to_owned()),
);
return Err(());
},
};
rooted!(in(*cx) let callee = UnwrapObjectStatic(call_args.callee()));
if callee.is_null() {
throw_dom_exception(cx, global, Error::Security);
return Err(());
}
{
let _ac = JSAutoRealm::new(*cx, callee.get());
rooted!(in(*cx) let mut constructor = ptr::null_mut::<JSObject>());
rooted!(in(*cx) let global_object = CurrentGlobalOrNull(*cx));
if definition.is_autonomous() {
// Step 4
// Since this element is autonomous, its active function object must be the HTMLElement
// Retrieve the constructor object for HTMLElement
HTMLElementBinding::GetConstructorObject(
cx,
global_object.handle(),
constructor.handle_mut(),
);
} else {
// Step 5
get_constructor_object_from_local_name(
definition.local_name.clone(),
cx,
global_object.handle(),
constructor.handle_mut(),
);
}
// Callee must be the same as the element interface's constructor object.
if constructor.get() != callee.get() {
throw_dom_exception(
cx,
global,
Error::Type("Custom element does not extend the proper interface".to_owned()),
);
return Err(());
}
}
// Step 6
rooted!(in(*cx) let mut prototype = ptr::null_mut::<JSObject>());
{
rooted!(in(*cx) let mut proto_val = UndefinedValue());
let _ac = JSAutoRealm::new(*cx, new_target_unwrapped.get());
if !JS_GetProperty(
*cx,
new_target_unwrapped.handle(),
b"prototype\0".as_ptr() as *const _,
proto_val.handle_mut(),
) {
return Err(());
}
if !proto_val.is_object() {
// Step 7 of https://html.spec.whatwg.org/multipage/#htmlconstructor.
// This fallback behavior is designed to match analogous behavior for the
// JavaScript built-ins. So we enter the realm of our underlying
// newTarget object and fall back to the prototype object from that global.
// XXX The spec says to use GetFunctionRealm(), which is not actually
// the same thing as what we have here (e.g. in the case of scripted callable proxies
// whose target is not same-realm with the proxy, or bound functions, etc).
// https://bugzilla.mozilla.org/show_bug.cgi?id=1317658
rooted!(in(*cx) let global_object = CurrentGlobalOrNull(*cx));
get_proto_object(cx, global_object.handle(), prototype.handle_mut());
} else {
// Step 6
prototype.set(proto_val.to_object());
}
}
// Wrap prototype in this context since it is from the newTarget realm
if !JS_WrapObject(*cx, prototype.handle_mut()) {
return Err(());
}
let entry = definition.construction_stack.borrow().last().cloned();
let result = match entry {
// Step 8
None => {
// Step 8.1
let name = QualName::new(None, ns!(html), definition.local_name.clone());
// Any prototype used to create these elements will be overwritten before returning
// from this function, so we don't bother overwriting the defaults here.
let element = if definition.is_autonomous() {
DomRoot::upcast(HTMLElement::new(name.local, None, &*document, None))
} else {
create_native_html_element(
name,
None,
&*document,
ElementCreator::ScriptCreated,
None,
)
};
// Step 8.2 is performed in the generated caller code.
// Step 8.3
element.set_custom_element_state(CustomElementState::Custom);
// Step 8.4
element.set_custom_element_definition(definition.clone());
// Step 8.5
if !check_type(&*element) {
throw_dom_exception(cx, global, Error::InvalidState);
return Err(());
} else {
element
}
},
// Step 9
Some(ConstructionStackEntry::Element(element)) => {
// Step 11 is performed in the generated caller code.
// Step 12
let mut construction_stack = definition.construction_stack.borrow_mut();
construction_stack.pop();
construction_stack.push(ConstructionStackEntry::AlreadyConstructedMarker);
// Step 13
if !check_type(&*element) {
throw_dom_exception(cx, global, Error::InvalidState);
return Err(());
} else {
element
}
},
// Step 10
Some(ConstructionStackEntry::AlreadyConstructedMarker) => {
let s = "Top of construction stack marked AlreadyConstructed due to \
a custom element constructor constructing itself after super()"
.to_string();
throw_dom_exception(cx, global, Error::Type(s));
return Err(());
},
};
rooted!(in(*cx) let mut element = result.reflector().get_jsobject().get());
if !JS_WrapObject(*cx, element.handle_mut()) {
return Err(());
}
JS_SetPrototype(*cx, element.handle(), prototype.handle());
result.to_jsval(*cx, MutableHandleValue::from_raw(call_args.rval()));
Ok(())
}
/// Returns the constructor object for the element associated with the given local name.
/// This list should only include elements marked with the [HTMLConstructor] extended attribute.
pub fn get_constructor_object_from_local_name(
name: LocalName,
cx: JSContext,
global: HandleObject,
rval: MutableHandleObject,
) -> bool {
macro_rules! get_constructor(
($binding:ident) => ({
$binding::GetConstructorObject(cx, global, rval);
true
})
);
match name {
local_name!("a") => get_constructor!(HTMLAnchorElementBinding),
local_name!("abbr") => get_constructor!(HTMLElementBinding),
local_name!("acronym") => get_constructor!(HTMLElementBinding),
local_name!("address") => get_constructor!(HTMLElementBinding),
local_name!("area") => get_constructor!(HTMLAreaElementBinding),
local_name!("article") => get_constructor!(HTMLElementBinding),
local_name!("aside") => get_constructor!(HTMLElementBinding),
local_name!("audio") => get_constructor!(HTMLAudioElementBinding),
local_name!("b") => get_constructor!(HTMLElementBinding),
local_name!("base") => get_constructor!(HTMLBaseElementBinding),
local_name!("bdi") => get_constructor!(HTMLElementBinding),
local_name!("bdo") => get_constructor!(HTMLElementBinding),
local_name!("big") => get_constructor!(HTMLElementBinding),
local_name!("blockquote") => get_constructor!(HTMLQuoteElementBinding),
local_name!("body") => get_constructor!(HTMLBodyElementBinding),
local_name!("br") => get_constructor!(HTMLBRElementBinding),
local_name!("button") => get_constructor!(HTMLButtonElementBinding),
local_name!("canvas") => get_constructor!(HTMLCanvasElementBinding),
local_name!("caption") => get_constructor!(HTMLTableCaptionElementBinding),
local_name!("center") => get_constructor!(HTMLElementBinding),
local_name!("cite") => get_constructor!(HTMLElementBinding),
local_name!("code") => get_constructor!(HTMLElementBinding),
local_name!("col") => get_constructor!(HTMLTableColElementBinding),
local_name!("colgroup") => get_constructor!(HTMLTableColElementBinding),
local_name!("data") => get_constructor!(HTMLDataElementBinding),
local_name!("datalist") => get_constructor!(HTMLDataListElementBinding),
local_name!("dd") => get_constructor!(HTMLElementBinding),
local_name!("del") => get_constructor!(HTMLModElementBinding),
local_name!("details") => get_constructor!(HTMLDetailsElementBinding),
local_name!("dfn") => get_constructor!(HTMLElementBinding),
local_name!("dialog") => get_constructor!(HTMLDialogElementBinding),
local_name!("dir") => get_constructor!(HTMLDirectoryElementBinding),
local_name!("div") => get_constructor!(HTMLDivElementBinding),
local_name!("dl") => get_constructor!(HTMLDListElementBinding),
local_name!("dt") => get_constructor!(HTMLElementBinding),
local_name!("em") => get_constructor!(HTMLElementBinding),
local_name!("embed") => get_constructor!(HTMLEmbedElementBinding),
local_name!("fieldset") => get_constructor!(HTMLFieldSetElementBinding),
local_name!("figcaption") => get_constructor!(HTMLElementBinding),
local_name!("figure") => get_constructor!(HTMLElementBinding),
local_name!("font") => get_constructor!(HTMLFontElementBinding),
local_name!("footer") => get_constructor!(HTMLElementBinding),
local_name!("form") => get_constructor!(HTMLFormElementBinding),
local_name!("frame") => get_constructor!(HTMLFrameElementBinding),
local_name!("frameset") => get_constructor!(HTMLFrameSetElementBinding),
local_name!("h1") => get_constructor!(HTMLHeadingElementBinding),
local_name!("h2") => get_constructor!(HTMLHeadingElementBinding),
local_name!("h3") => get_constructor!(HTMLHeadingElementBinding),
local_name!("h4") => get_constructor!(HTMLHeadingElementBinding),
local_name!("h5") => get_constructor!(HTMLHeadingElementBinding),
local_name!("h6") => get_constructor!(HTMLHeadingElementBinding),
local_name!("head") => get_constructor!(HTMLHeadElementBinding),
local_name!("header") => get_constructor!(HTMLElementBinding),
local_name!("hgroup") => get_constructor!(HTMLElementBinding),
local_name!("hr") => get_constructor!(HTMLHRElementBinding),
local_name!("html") => get_constructor!(HTMLHtmlElementBinding),
local_name!("i") => get_constructor!(HTMLElementBinding),
local_name!("iframe") => get_constructor!(HTMLIFrameElementBinding),
local_name!("img") => get_constructor!(HTMLImageElementBinding),
local_name!("input") => get_constructor!(HTMLInputElementBinding),
local_name!("ins") => get_constructor!(HTMLModElementBinding),
local_name!("kbd") => get_constructor!(HTMLElementBinding),
local_name!("label") => get_constructor!(HTMLLabelElementBinding),
local_name!("legend") => get_constructor!(HTMLLegendElementBinding),
local_name!("li") => get_constructor!(HTMLLIElementBinding),
local_name!("link") => get_constructor!(HTMLLinkElementBinding),
local_name!("listing") => get_constructor!(HTMLPreElementBinding),
local_name!("main") => get_constructor!(HTMLElementBinding),
local_name!("map") => get_constructor!(HTMLMapElementBinding),
local_name!("mark") => get_constructor!(HTMLElementBinding),
local_name!("marquee") => get_constructor!(HTMLElementBinding),
local_name!("menu") => get_constructor!(HTMLMenuElementBinding),
local_name!("meta") => get_constructor!(HTMLMetaElementBinding),
local_name!("meter") => get_constructor!(HTMLMeterElementBinding),
local_name!("nav") => get_constructor!(HTMLElementBinding),
local_name!("nobr") => get_constructor!(HTMLElementBinding),
local_name!("noframes") => get_constructor!(HTMLElementBinding),
local_name!("noscript") => get_constructor!(HTMLElementBinding),
local_name!("object") => get_constructor!(HTMLObjectElementBinding),
local_name!("ol") => get_constructor!(HTMLOListElementBinding),
local_name!("optgroup") => get_constructor!(HTMLOptGroupElementBinding),
local_name!("option") => get_constructor!(HTMLOptionElementBinding),
local_name!("output") => get_constructor!(HTMLOutputElementBinding),
local_name!("p") => get_constructor!(HTMLParagraphElementBinding),
local_name!("param") => get_constructor!(HTMLParamElementBinding),
local_name!("picture") => get_constructor!(HTMLPictureElementBinding),
local_name!("plaintext") => get_constructor!(HTMLPreElementBinding),
local_name!("pre") => get_constructor!(HTMLPreElementBinding),
local_name!("progress") => get_constructor!(HTMLProgressElementBinding),
local_name!("q") => get_constructor!(HTMLQuoteElementBinding),
local_name!("rp") => get_constructor!(HTMLElementBinding),
local_name!("rt") => get_constructor!(HTMLElementBinding),
local_name!("ruby") => get_constructor!(HTMLElementBinding),
local_name!("s") => get_constructor!(HTMLElementBinding),
local_name!("samp") => get_constructor!(HTMLElementBinding),
local_name!("script") => get_constructor!(HTMLScriptElementBinding),
local_name!("section") => get_constructor!(HTMLElementBinding),
local_name!("select") => get_constructor!(HTMLSelectElementBinding),
local_name!("small") => get_constructor!(HTMLElementBinding),
local_name!("source") => get_constructor!(HTMLSourceElementBinding),
local_name!("span") => get_constructor!(HTMLSpanElementBinding),
local_name!("strike") => get_constructor!(HTMLElementBinding),
local_name!("strong") => get_constructor!(HTMLElementBinding),
local_name!("style") => get_constructor!(HTMLStyleElementBinding),
local_name!("sub") => get_constructor!(HTMLElementBinding),
local_name!("summary") => get_constructor!(HTMLElementBinding),
local_name!("sup") => get_constructor!(HTMLElementBinding),
local_name!("table") => get_constructor!(HTMLTableElementBinding),
local_name!("tbody") => get_constructor!(HTMLTableSectionElementBinding),
local_name!("td") => get_constructor!(HTMLTableCellElementBinding),
local_name!("template") => get_constructor!(HTMLTemplateElementBinding),
local_name!("textarea") => get_constructor!(HTMLTextAreaElementBinding),
local_name!("tfoot") => get_constructor!(HTMLTableSectionElementBinding),
local_name!("th") => get_constructor!(HTMLTableCellElementBinding),
local_name!("thead") => get_constructor!(HTMLTableSectionElementBinding),
local_name!("time") => get_constructor!(HTMLTimeElementBinding),
local_name!("title") => get_constructor!(HTMLTitleElementBinding),
local_name!("tr") => get_constructor!(HTMLTableRowElementBinding),
local_name!("tt") => get_constructor!(HTMLElementBinding),
local_name!("track") => get_constructor!(HTMLTrackElementBinding),
local_name!("u") => get_constructor!(HTMLElementBinding),
local_name!("ul") => get_constructor!(HTMLUListElementBinding),
local_name!("var") => get_constructor!(HTMLElementBinding),
local_name!("video") => get_constructor!(HTMLVideoElementBinding),
local_name!("wbr") => get_constructor!(HTMLElementBinding),
local_name!("xmp") => get_constructor!(HTMLPreElementBinding),
_ => false,
}
}
pub fn pop_current_element_queue() {
ScriptThread::pop_current_element_queue();
}
pub fn push_new_element_queue() {
ScriptThread::push_new_element_queue();
}
pub(crate) unsafe fn call_html_constructor<T: DerivedFrom<Element> + DomObject>(
cx: JSContext,
args: &CallArgs,
global: &Window,
get_proto_object: fn(JSContext, HandleObject, MutableHandleObject),
) -> bool {
fn element_derives_interface<T: DerivedFrom<Element>>(element: &Element) -> bool {
element.is::<T>()
}
html_constructor(
cx,
global,
args,
element_derives_interface::<T>,
get_proto_object,
)
.is_ok()
}
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