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LibWeb: Add simple ad-hoc version of window.postMessage()

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This allows us to use the wpt.live copy of the ACID3 test, which is kept
updated, unlike the acidtests.org version.
This commit is contained in:
Andreas Kling 2022-02-26 17:21:40 +01:00
parent fc5e414596
commit f855cbac92
4 changed files with 29 additions and 0 deletions
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10
Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
View file

@ -95,6 +95,8 @@ void WindowObject::initialize_global_object()
define_native_function("matchMedia", match_media, 1, attr);
define_native_function("getSelection", get_selection, 0, attr);
define_native_function("postMessage", post_message, 1, attr);
// FIXME: These properties should be [Replaceable] according to the spec, but [Writable+Configurable] is the closest we have.
define_native_accessor("scrollX", scroll_x_getter, {}, attr);
define_native_accessor("pageXOffset", scroll_x_getter, {}, attr);
@ -641,6 +643,14 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::screen_y_getter)
return JS::Value(impl->screen_y());
}
JS_DEFINE_NATIVE_FUNCTION(WindowObject::post_message)
{
auto* impl = TRY(impl_from(vm, global_object));
auto target_origin = TRY(vm.argument(1).to_string(global_object));
impl->post_message(vm.argument(0), target_origin);
return JS::js_undefined();
}
JS_DEFINE_NATIVE_FUNCTION(WindowObject::local_storage_getter)
{
auto* impl = TRY(impl_from(vm, global_object));

2
Userland/Libraries/LibWeb/Bindings/WindowObject.h
View file

@ -94,6 +94,8 @@ private:
JS_DECLARE_NATIVE_FUNCTION(screen_left_getter);
JS_DECLARE_NATIVE_FUNCTION(screen_top_getter);
JS_DECLARE_NATIVE_FUNCTION(post_message);
JS_DECLARE_NATIVE_FUNCTION(local_storage_getter);
JS_DECLARE_NATIVE_FUNCTION(alert);

15
Userland/Libraries/LibWeb/DOM/Window.cpp
View file

@ -19,6 +19,7 @@
#include <LibWeb/DOM/Window.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/EventLoop/EventLoop.h>
#include <LibWeb/HTML/MessageEvent.h>
#include <LibWeb/HTML/PageTransitionEvent.h>
#include <LibWeb/HTML/Scripting/ExceptionReporter.h>
#include <LibWeb/HTML/Storage.h>
@ -476,4 +477,18 @@ Window* Window::parent()
return &current->active_document()->window();
}
// https://html.spec.whatwg.org/multipage/web-messaging.html#window-post-message-steps
DOM::ExceptionOr<void> Window::post_message(JS::Value message, String const&)
{
// FIXME: This is an ad-hoc hack implementation instead, since we don't currently
// have serialization and deserialization of messages.
HTML::queue_global_task(HTML::Task::Source::PostedMessage, *wrapper(), [strong_this = NonnullRefPtr(*this), message]() mutable {
HTML::MessageEventInit event_init {};
event_init.data = message;
event_init.origin = "<origin>";
strong_this->dispatch_event(HTML::MessageEvent::create(HTML::EventNames::message, event_init));
});
return {};
}
}

2
Userland/Libraries/LibWeb/DOM/Window.h
View file

@ -102,6 +102,8 @@ public:
Window* parent();
DOM::ExceptionOr<void> post_message(JS::Value, String const& target_origin);
private:
explicit Window(Document&);