ladybird/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
Andreas Kling c0d7f748ed LibWeb: Avoid FlyString lookups when setting IDL interface prototypes
This commit introduces a WEB_SET_PROTOTYPE_FOR_INTERFACE macro that
caches the interface name in a local static FlyString. This means that
we only pay for FlyString-from-literal lookup once per browser lifetime
instead of every time the interface is instantiated.
2024-03-16 16:35:54 +01:00

78 lines
2.2 KiB
C++

/*
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Array.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/HTML/MessageEvent.h>
namespace Web::HTML {
JS_DEFINE_ALLOCATOR(MessageEvent);
JS::NonnullGCPtr<MessageEvent> MessageEvent::create(JS::Realm& realm, FlyString const& event_name, MessageEventInit const& event_init)
{
return realm.heap().allocate<MessageEvent>(realm, realm, event_name, event_init);
}
WebIDL::ExceptionOr<JS::NonnullGCPtr<MessageEvent>> MessageEvent::construct_impl(JS::Realm& realm, FlyString const& event_name, MessageEventInit const& event_init)
{
return create(realm, event_name, event_init);
}
MessageEvent::MessageEvent(JS::Realm& realm, FlyString const& event_name, MessageEventInit const& event_init)
: DOM::Event(realm, event_name, event_init)
, m_data(event_init.data)
, m_origin(event_init.origin)
, m_last_event_id(event_init.last_event_id)
, m_source(event_init.source)
{
m_ports.ensure_capacity(event_init.ports.size());
for (auto& port : event_init.ports) {
VERIFY(port);
m_ports.unchecked_append(*port);
}
}
MessageEvent::~MessageEvent() = default;
void MessageEvent::initialize(JS::Realm& realm)
{
Base::initialize(realm);
WEB_SET_PROTOTYPE_FOR_INTERFACE(MessageEvent);
}
void MessageEvent::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_data);
visitor.visit(m_ports_array);
for (auto& port : m_ports)
visitor.visit(port);
}
Variant<JS::Handle<WindowProxy>, JS::Handle<MessagePort>, Empty> MessageEvent::source() const
{
if (!m_source.has_value())
return Empty {};
return m_source.value().downcast<JS::Handle<WindowProxy>, JS::Handle<MessagePort>>();
}
JS::NonnullGCPtr<JS::Object> MessageEvent::ports() const
{
if (!m_ports_array) {
Vector<JS::Value> port_vector;
for (auto const& port : m_ports) {
port_vector.append(port);
}
m_ports_array = JS::Array::create_from(realm(), port_vector);
MUST(m_ports_array->set_integrity_level(IntegrityLevel::Frozen));
}
return *m_ports_array;
}
}