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LibWeb: Move event listeners, handlers and callbacks to the GC heap

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This patch moves the following things to being GC-allocated:
- Bindings::CallbackType
- HTML::EventHandler
- DOM::IDLEventListener
- DOM::DOMEventListener
- DOM::NodeFilter

Note that we only use PlatformObject for things that might be exposed
to web content. Anything that is only used internally inherits directly
from JS::Cell instead, making them a bit more lightweight.
This commit is contained in:
Andreas Kling 2022-08-08 14:12:01 +02:00
parent 967a3e5a45
commit 8cda70c892
57 changed files with 425 additions and 345 deletions
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18
Userland/Libraries/LibWeb/HTML/Window.cpp
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@ -173,8 +173,8 @@ i32 Window::run_timer_initialization_steps(Bindings::TimerHandler handler, i32 t
handler.visit(
// 2. If handler is a Function, then invoke handler given arguments with the callback this value set to thisArg. If this throws an exception, catch it, and report the exception.
[&](Bindings::CallbackType& callback) {
if (auto result = Bindings::IDL::invoke_callback(callback, window->wrapper(), arguments); result.is_error())
[&](JS::Handle<Bindings::CallbackType> callback) {
if (auto result = Bindings::IDL::invoke_callback(*callback, window->wrapper(), arguments); result.is_error())
HTML::report_exception(result);
},
// 3. Otherwise:
@ -237,9 +237,9 @@ i32 Window::run_timer_initialization_steps(Bindings::TimerHandler handler, i32 t
}
// https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html#run-the-animation-frame-callbacks
i32 Window::request_animation_frame(NonnullOwnPtr<Bindings::CallbackType> js_callback)
i32 Window::request_animation_frame(Bindings::CallbackType& js_callback)
{
return m_animation_frame_callback_driver.add([this, js_callback = move(js_callback)](auto) mutable {
return m_animation_frame_callback_driver.add([this, js_callback = JS::make_handle(js_callback)](auto) mutable {
// 3. Invoke callback, passing now as the only argument,
auto result = Bindings::IDL::invoke_callback(*js_callback, {}, JS::Value(performance().now()));
@ -471,10 +471,10 @@ void Window::fire_a_page_transition_event(FlyString const& event_name, bool pers
}
// https://html.spec.whatwg.org/#dom-queuemicrotask
void Window::queue_microtask(NonnullOwnPtr<Bindings::CallbackType> callback)
void Window::queue_microtask(Bindings::CallbackType& callback)
{
// The queueMicrotask(callback) method must queue a microtask to invoke callback,
HTML::queue_a_microtask(&associated_document(), [callback = move(callback)]() mutable {
HTML::queue_a_microtask(&associated_document(), [callback = JS::make_handle(callback)]() mutable {
auto result = Bindings::IDL::invoke_callback(*callback, {});
// and if callback throws an exception, report the exception.
if (result.is_error())
@ -643,7 +643,7 @@ void Window::invoke_idle_callbacks()
}
// https://w3c.github.io/requestidlecallback/#the-requestidlecallback-method
u32 Window::request_idle_callback(NonnullOwnPtr<Bindings::CallbackType> callback)
u32 Window::request_idle_callback(Bindings::CallbackType& callback)
{
// 1. Let window be this Window object.
auto& window = *this;
@ -652,8 +652,8 @@ u32 Window::request_idle_callback(NonnullOwnPtr<Bindings::CallbackType> callback
// 3. Let handle be the current value of window's idle callback identifier.
auto handle = window.m_idle_callback_identifier;
// 4. Push callback to the end of window's list of idle request callbacks, associated with handle.
auto handler = [callback = move(callback)](NonnullRefPtr<RequestIdleCallback::IdleDeadline> deadline) -> JS::Completion {
auto& realm = callback->callback.cell()->shape().realm();
auto handler = [callback = JS::make_handle(callback)](NonnullRefPtr<RequestIdleCallback::IdleDeadline> deadline) -> JS::Completion {
auto& realm = callback->callback.shape().realm();
auto* wrapped_deadline = Bindings::wrap(realm, *deadline);
return Bindings::IDL::invoke_callback(const_cast<Bindings::CallbackType&>(*callback), {}, JS::Value(wrapped_deadline));
};