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LibWeb: Add a Transferable interface to model the transferable property

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This property is only shared by MessagePort and a few Image related APIs
but is important for the Structured{De}SerializeWithTransfer AOs.
This commit is contained in:
Andrew Kaster 2023-12-07 15:52:08 -07:00 • committed by Andreas Kling
parent 512624f31a
commit e21d1078a0
4 changed files with 107 additions and 5 deletions
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12
Userland/Libraries/LibWeb/HTML/MessagePort.h
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@ -8,6 +8,7 @@
#include <AK/RefCounted.h>
#include <AK/Weakable.h>
#include <LibWeb/Bindings/Transferable.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/Forward.h>
@ -23,7 +24,8 @@ struct StructuredSerializeOptions {
};
// https://html.spec.whatwg.org/multipage/web-messaging.html#message-ports
class MessagePort final : public DOM::EventTarget {
class MessagePort final : public DOM::EventTarget
, public Bindings::Transferable {
WEB_PLATFORM_OBJECT(MessagePort, DOM::EventTarget);
JS_DECLARE_ALLOCATOR(MessagePort);
@ -49,6 +51,11 @@ public:
ENUMERATE_MESSAGE_PORT_EVENT_HANDLERS(__ENUMERATE)
#undef __ENUMERATE
// ^Transferable
virtual WebIDL::ExceptionOr<void> transfer_steps(HTML::TransferDataHolder&) override;
virtual WebIDL::ExceptionOr<void> transfer_receiving_steps(HTML::TransferDataHolder const&) override;
virtual HTML::TransferType primary_interface() const override { return HTML::TransferType::MessagePort; }
private:
explicit MessagePort(JS::Realm&);
@ -63,9 +70,6 @@ private:
// https://html.spec.whatwg.org/multipage/web-messaging.html#has-been-shipped
bool m_has_been_shipped { false };
// This is TransferableObject.[[Detached]]
bool m_detached { false };
};
}