2020-03-13 17:00:50 +00:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jeremy Apthorp <nornagon@nornagon.net>
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Date: Wed, 4 Mar 2020 11:18:03 -0800
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Subject: feat: add onclose to MessagePort
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This adds the 'onclose' event to MessagePort. This is
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[proposed](https://github.com/w3ctag/design-reviews/issues/269#issuecomment-407584290)
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in w3c and has been discussed for years without conclusion. I'd like to
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get this standardised, but in lieu of that, this makes MessagePort a
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whole bunch more useful!
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diff --git a/third_party/blink/renderer/core/messaging/message_port.cc b/third_party/blink/renderer/core/messaging/message_port.cc
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2023-07-18 22:26:27 +00:00
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index 109ca611fedb6acce1142b2087ec3c4d6cbbfbf0..cf683459c3bb67df027d8b28cd471214b89fbda6 100644
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2020-03-13 17:00:50 +00:00
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--- a/third_party/blink/renderer/core/messaging/message_port.cc
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+++ b/third_party/blink/renderer/core/messaging/message_port.cc
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2023-04-12 11:37:48 +00:00
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@@ -175,6 +175,7 @@ void MessagePort::close() {
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2020-05-26 20:06:26 +00:00
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Entangle(pipe.TakePort0());
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2020-03-13 17:00:50 +00:00
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}
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closed_ = true;
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+ DispatchEvent(*Event::Create(event_type_names::kClose));
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}
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2020-05-26 20:06:26 +00:00
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void MessagePort::Entangle(MessagePortDescriptor port) {
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2020-03-13 17:00:50 +00:00
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diff --git a/third_party/blink/renderer/core/messaging/message_port.h b/third_party/blink/renderer/core/messaging/message_port.h
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2023-07-18 22:26:27 +00:00
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index 3055b625e7474f94aaddcf5500b4db07bd59a428..cc6b29749a9cf5ddd71aa4163078dce8989bd3bf 100644
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2020-03-13 17:00:50 +00:00
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--- a/third_party/blink/renderer/core/messaging/message_port.h
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+++ b/third_party/blink/renderer/core/messaging/message_port.h
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2023-07-18 22:26:27 +00:00
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@@ -120,6 +120,13 @@ class CORE_EXPORT MessagePort : public EventTarget,
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2020-03-13 17:00:50 +00:00
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return GetAttributeEventListener(event_type_names::kMessageerror);
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}
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+ void setOnclose(EventListener* listener) {
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+ SetAttributeEventListener(event_type_names::kClose, listener);
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+ }
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+ EventListener* onclose() {
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+ return GetAttributeEventListener(event_type_names::kClose);
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+ }
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+
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// A port starts out its life entangled, and remains entangled until it is
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// closed or is cloned.
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bool IsEntangled() const { return !closed_ && !IsNeutered(); }
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diff --git a/third_party/blink/renderer/core/messaging/message_port.idl b/third_party/blink/renderer/core/messaging/message_port.idl
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index 6fab27fcdf1c333739b6ffe88b3cc4eed3301ee4..3f1f181d9b8a66997136f870f55c97c08294b6eb 100644
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--- a/third_party/blink/renderer/core/messaging/message_port.idl
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+++ b/third_party/blink/renderer/core/messaging/message_port.idl
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@@ -40,4 +40,5 @@
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// event handlers
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attribute EventHandler onmessage;
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attribute EventHandler onmessageerror;
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+ attribute EventHandler onclose;
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};
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