ladybird/Libraries/LibWeb/HTML/MessageEvent.cpp
Shannon Booth f87041bf3a LibGC+Everywhere: Factor out a LibGC from LibJS
Resulting in a massive rename across almost everywhere! Alongside the
namespace change, we now have the following names:

 * JS::NonnullGCPtr -> GC::Ref
 * JS::GCPtr -> GC::Ptr
 * JS::HeapFunction -> GC::Function
 * JS::CellImpl -> GC::Cell
 * JS::Handle -> GC::Root
2024-11-15 14:49:20 +01:00

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/*
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Array.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/MessageEventPrototype.h>
#include <LibWeb/HTML/MessageEvent.h>
#include <LibWeb/HTML/MessagePort.h>
namespace Web::HTML {
GC_DEFINE_ALLOCATOR(MessageEvent);
GC::Ref<MessageEvent> MessageEvent::create(JS::Realm& realm, FlyString const& event_name, MessageEventInit const& event_init)
{
return realm.create<MessageEvent>(realm, event_name, event_init);
}
WebIDL::ExceptionOr<GC::Ref<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 const& port : event_init.ports) {
VERIFY(port);
m_ports.unchecked_append(static_cast<JS::Object&>(*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);
visitor.visit(m_ports);
}
Variant<GC::Root<WindowProxy>, GC::Root<MessagePort>, Empty> MessageEvent::source() const
{
if (!m_source.has_value())
return Empty {};
return m_source.value().downcast<GC::Root<WindowProxy>, GC::Root<MessagePort>>();
}
GC::Ref<JS::Object> MessageEvent::ports() const
{
if (!m_ports_array) {
GC::MarkedVector<JS::Value> port_vector(heap());
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;
}
// https://html.spec.whatwg.org/multipage/comms.html#dom-messageevent-initmessageevent
void MessageEvent::init_message_event(String const& type, bool bubbles, bool cancelable, JS::Value data, String const& origin, String const& last_event_id, Optional<MessageEventSource> source, Vector<GC::Root<MessagePort>> const& ports)
{
// The initMessageEvent(type, bubbles, cancelable, data, origin, lastEventId, source, ports) method must initialize the event in a
// manner analogous to the similarly-named initEvent() method.
// 1. If thiss dispatch flag is set, then return.
if (dispatched())
return;
// 2. Initialize this with type, bubbles, and cancelable.
initialize_event(type, bubbles, cancelable);
// Implementation Defined: Initialise other values.
m_data = data;
m_origin = origin;
m_last_event_id = last_event_id;
m_source = source;
m_ports.clear();
m_ports.ensure_capacity(ports.size());
for (auto const& port : ports) {
VERIFY(port);
m_ports.unchecked_append(static_cast<JS::Object&>(*port));
}
}
}