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LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated

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This is a monster patch that turns all EventTargets into GC-allocated
PlatformObjects. Their C++ wrapper classes are removed, and the LibJS
garbage collector is now responsible for their lifetimes.

There's a fair amount of hacks and band-aids in this patch, and we'll
have a lot of cleanup to do after this.
This commit is contained in:
Andreas Kling 2022-08-28 13:42:07 +02:00
parent bb547ce1c4
commit 6f433c8656
445 changed files with 4797 additions and 4268 deletions
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45
Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
View file

@ -8,7 +8,7 @@
#include <LibJS/Parser.h>
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibJS/Runtime/FunctionObject.h>
#include <LibWeb/Bindings/WebSocketWrapper.h>
#include <LibWeb/Bindings/WebSocketPrototype.h>
#include <LibWeb/DOM/DOMException.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Event.h>
@ -48,7 +48,7 @@ WebSocketClientSocket::~WebSocketClientSocket() = default;
WebSocketClientManager::WebSocketClientManager() = default;
// https://websockets.spec.whatwg.org/#dom-websocket-websocket
DOM::ExceptionOr<NonnullRefPtr<WebSocket>> WebSocket::create_with_global_object(Bindings::WindowObject& window, String const& url)
DOM::ExceptionOr<JS::NonnullGCPtr<WebSocket>> WebSocket::create_with_global_object(HTML::Window& window, String const& url)
{
AK::URL url_record(url);
if (!url_record.is_valid())
@ -59,35 +59,37 @@ DOM::ExceptionOr<NonnullRefPtr<WebSocket>> WebSocket::create_with_global_object(
return DOM::SyntaxError::create("Presence of URL fragment is invalid");
// 5. If `protocols` is a string, set `protocols` to a sequence consisting of just that string
// 6. If any of the values in `protocols` occur more than once or otherwise fail to match the requirements, throw SyntaxError
return WebSocket::create(window.impl(), url_record);
return JS::NonnullGCPtr(*window.heap().allocate<WebSocket>(window.realm(), window.impl(), url_record));
}
WebSocket::WebSocket(HTML::Window& window, AK::URL& url)
: EventTarget()
: EventTarget(window.realm())
, m_window(window)
{
set_prototype(&window.ensure_web_prototype<Bindings::WebSocketPrototype>("WebSocket"));
// FIXME: Integrate properly with FETCH as per https://fetch.spec.whatwg.org/#websocket-opening-handshake
auto origin_string = m_window->associated_document().origin().serialize();
m_websocket = WebSocketClientManager::the().connect(url, origin_string);
m_websocket->on_open = [weak_this = make_weak_ptr()] {
m_websocket->on_open = [weak_this = make_weak_ptr<WebSocket>()] {
if (!weak_this)
return;
auto& websocket = const_cast<WebSocket&>(*weak_this);
websocket.on_open();
};
m_websocket->on_message = [weak_this = make_weak_ptr()](auto message) {
m_websocket->on_message = [weak_this = make_weak_ptr<WebSocket>()](auto message) {
if (!weak_this)
return;
auto& websocket = const_cast<WebSocket&>(*weak_this);
websocket.on_message(move(message.data), message.is_text);
};
m_websocket->on_close = [weak_this = make_weak_ptr()](auto code, auto reason, bool was_clean) {
m_websocket->on_close = [weak_this = make_weak_ptr<WebSocket>()](auto code, auto reason, bool was_clean) {
if (!weak_this)
return;
auto& websocket = const_cast<WebSocket&>(*weak_this);
websocket.on_close(code, reason, was_clean);
};
m_websocket->on_error = [weak_this = make_weak_ptr()](auto) {
m_websocket->on_error = [weak_this = make_weak_ptr<WebSocket>()](auto) {
if (!weak_this)
return;
auto& websocket = const_cast<WebSocket&>(*weak_this);
@ -97,6 +99,12 @@ WebSocket::WebSocket(HTML::Window& window, AK::URL& url)
WebSocket::~WebSocket() = default;
void WebSocket::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_window.ptr());
}
// https://websockets.spec.whatwg.org/#dom-websocket-readystate
WebSocket::ReadyState WebSocket::ready_state() const
{
@ -172,13 +180,13 @@ void WebSocket::on_open()
// 1. Change the readyState attribute's value to OPEN (1).
// 2. Change the extensions attribute's value to the extensions in use, if it is not the null value. [WSP]
// 3. Change the protocol attribute's value to the subprotocol in use, if it is not the null value. [WSP]
dispatch_event(*DOM::Event::create(*m_window->wrapper(), HTML::EventNames::open));
dispatch_event(*DOM::Event::create(*m_window, HTML::EventNames::open));
}
// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
void WebSocket::on_error()
{
dispatch_event(*DOM::Event::create(*m_window->wrapper(), HTML::EventNames::error));
dispatch_event(*DOM::Event::create(*m_window, HTML::EventNames::error));
}
// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
@ -190,7 +198,7 @@ void WebSocket::on_close(u16 code, String reason, bool was_clean)
event_init.was_clean = was_clean;
event_init.code = code;
event_init.reason = move(reason);
dispatch_event(*HTML::CloseEvent::create(*m_window->wrapper(), HTML::EventNames::close, event_init));
dispatch_event(*HTML::CloseEvent::create(*m_window, HTML::EventNames::close, event_init));
}
// https://websockets.spec.whatwg.org/#feedback-from-the-protocol
@ -201,9 +209,9 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
if (is_text) {
auto text_message = String(ReadonlyBytes(message));
HTML::MessageEventInit event_init;
event_init.data = JS::js_string(wrapper()->vm(), text_message);
event_init.data = JS::js_string(vm(), text_message);
event_init.origin = url();
dispatch_event(*HTML::MessageEvent::create(*m_window->wrapper(), HTML::EventNames::message, event_init));
dispatch_event(*HTML::MessageEvent::create(*m_window, HTML::EventNames::message, event_init));
return;
}
@ -212,12 +220,10 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
TODO();
} else if (m_binary_type == "arraybuffer") {
// type indicates that the data is Binary and binaryType is "arraybuffer"
auto& vm = wrapper()->vm();
auto& realm = *vm.current_realm();
HTML::MessageEventInit event_init;
event_init.data = JS::ArrayBuffer::create(realm, message);
event_init.data = JS::ArrayBuffer::create(realm(), message);
event_init.origin = url();
dispatch_event(*HTML::MessageEvent::create(*m_window->wrapper(), HTML::EventNames::message, event_init));
dispatch_event(*HTML::MessageEvent::create(*m_window, HTML::EventNames::message, event_init));
return;
}
@ -225,11 +231,6 @@ void WebSocket::on_message(ByteBuffer message, bool is_text)
TODO();
}
JS::Object* WebSocket::create_wrapper(JS::Realm& realm)
{
return wrap(realm, *this);
}
#undef __ENUMERATE
#define __ENUMERATE(attribute_name, event_name) \
void WebSocket::set_##attribute_name(Bindings::CallbackType* value) \

36
Userland/Libraries/LibWeb/WebSockets/WebSocket.h
View file

@ -7,15 +7,13 @@
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/RefCounted.h>
#include <AK/URL.h>
#include <AK/Weakable.h>
#include <LibCore/Object.h>
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/Window.h>
#define ENUMERATE_WEBSOCKET_EVENT_HANDLERS(E) \
E(onerror, HTML::EventNames::error) \
@ -28,11 +26,9 @@ namespace Web::WebSockets {
class WebSocketClientSocket;
class WebSocketClientManager;
class WebSocket final
: public RefCounted<WebSocket>
, public Weakable<WebSocket>
, public DOM::EventTarget
, public Bindings::Wrappable {
class WebSocket final : public DOM::EventTarget {
WEB_PLATFORM_OBJECT(WebSocket, DOM::EventTarget);
public:
enum class ReadyState : u16 {
Connecting = 0,
@ -41,20 +37,10 @@ public:
Closed = 3,
};
using WrapperType = Bindings::WebSocketWrapper;
static NonnullRefPtr<WebSocket> create(HTML::Window& window, AK::URL& url)
{
return adopt_ref(*new WebSocket(window, url));
}
static DOM::ExceptionOr<NonnullRefPtr<WebSocket>> create_with_global_object(Bindings::WindowObject& window, String const& url);
static DOM::ExceptionOr<JS::NonnullGCPtr<WebSocket>> create_with_global_object(HTML::Window&, String const& url);
virtual ~WebSocket() override;
using RefCounted::ref;
using RefCounted::unref;
String url() const { return m_url.to_string(); }
#undef __ENUMERATE
@ -75,10 +61,6 @@ public:
DOM::ExceptionOr<void> send(String const& data);
private:
virtual void ref_event_target() override { ref(); }
virtual void unref_event_target() override { unref(); }
virtual JS::Object* create_wrapper(JS::Realm&) override;
void on_open();
void on_message(ByteBuffer message, bool is_text);
void on_error();
@ -86,7 +68,9 @@ private:
explicit WebSocket(HTML::Window&, AK::URL&);
NonnullRefPtr<HTML::Window> m_window;
virtual void visit_edges(Cell::Visitor&) override;
JS::NonnullGCPtr<HTML::Window> m_window;
AK::URL m_url;
String m_binary_type { "blob" };
@ -142,3 +126,5 @@ protected:
};
}
WRAPPER_HACK(WebSocket, Web::WebSockets)