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-rw-r--r--dom/abort/AbortSignal.h76
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diff --git a/dom/abort/AbortSignal.h b/dom/abort/AbortSignal.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_AbortSignal_h
+#define mozilla_dom_AbortSignal_h
+
+#include "mozilla/DOMEventTargetHelper.h"
+
+namespace mozilla {
+namespace dom {
+
+class AbortController;
+class AbortSignal;
+
+class AbortSignal final : public DOMEventTargetHelper
+{
+public:
+ // This class must be implemented by objects who want to follow a AbortSignal.
+ class Follower
+ {
+ public:
+ virtual void Aborted() = 0;
+
+ protected:
+ virtual ~Follower();
+
+ void
+ Follow(AbortSignal* aSignal);
+
+ void
+ Unfollow();
+
+ RefPtr<AbortSignal> mFollowingSignal;
+ };
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AbortSignal, DOMEventTargetHelper)
+
+ AbortSignal(AbortController* aController, bool aAborted);
+ explicit AbortSignal(bool aAborted);
+
+ JSObject*
+ WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+ bool
+ Aborted() const;
+
+ void
+ Abort();
+
+ IMPL_EVENT_HANDLER(abort);
+
+ void
+ AddFollower(Follower* aFollower);
+
+ void
+ RemoveFollower(Follower* aFollower);
+
+private:
+ ~AbortSignal() = default;
+
+ RefPtr<AbortController> mController;
+
+ // Raw pointers. Follower unregisters itself in the DTOR.
+ nsTArray<Follower*> mFollowers;
+
+ bool mAborted;
+};
+
+} // dom namespace
+} // mozilla namespace
+
+#endif // mozilla_dom_AbortSignal_h