зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
3.1 KiB
C++
114 строки
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AbortSignal.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/AbortSignalBinding.h"
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namespace mozilla {
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namespace dom {
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// AbortSignalImpl
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// ----------------------------------------------------------------------------
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AbortSignalImpl::AbortSignalImpl(bool aAborted) : mAborted(aAborted) {}
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bool AbortSignalImpl::Aborted() const { return mAborted; }
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void AbortSignalImpl::Abort() {
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if (mAborted) {
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return;
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}
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mAborted = true;
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// Let's inform the followers.
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for (RefPtr<AbortFollower> follower : mFollowers.ForwardRange()) {
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follower->Abort();
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}
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}
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void AbortSignalImpl::AddFollower(AbortFollower* aFollower) {
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MOZ_DIAGNOSTIC_ASSERT(aFollower);
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if (!mFollowers.Contains(aFollower)) {
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mFollowers.AppendElement(aFollower);
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}
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}
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void AbortSignalImpl::RemoveFollower(AbortFollower* aFollower) {
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MOZ_DIAGNOSTIC_ASSERT(aFollower);
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mFollowers.RemoveElement(aFollower);
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}
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// AbortSignal
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// ----------------------------------------------------------------------------
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NS_IMPL_CYCLE_COLLECTION_CLASS(AbortSignal)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(AbortSignal,
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DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFollowingSignal)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(AbortSignal,
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DOMEventTargetHelper)
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tmp->Unfollow();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AbortSignal)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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NS_IMPL_ADDREF_INHERITED(AbortSignal, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(AbortSignal, DOMEventTargetHelper)
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AbortSignal::AbortSignal(nsIGlobalObject* aGlobalObject, bool aAborted)
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: DOMEventTargetHelper(aGlobalObject), AbortSignalImpl(aAborted) {}
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JSObject* AbortSignal::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return AbortSignal_Binding::Wrap(aCx, this, aGivenProto);
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}
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void AbortSignal::Abort() {
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AbortSignalImpl::Abort();
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EventInit init;
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init.mBubbles = false;
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init.mCancelable = false;
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RefPtr<Event> event = Event::Constructor(this, u"abort"_ns, init);
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event->SetTrusted(true);
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DispatchEvent(*event);
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}
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// AbortFollower
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// ----------------------------------------------------------------------------
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AbortFollower::~AbortFollower() { Unfollow(); }
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void AbortFollower::Follow(AbortSignalImpl* aSignal) {
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MOZ_DIAGNOSTIC_ASSERT(aSignal);
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Unfollow();
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mFollowingSignal = aSignal;
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aSignal->AddFollower(this);
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}
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void AbortFollower::Unfollow() {
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if (mFollowingSignal) {
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mFollowingSignal->RemoveFollower(this);
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mFollowingSignal = nullptr;
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}
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}
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bool AbortFollower::IsFollowing() const { return !!mFollowingSignal; }
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} // namespace dom
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} // namespace mozilla
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