| /* |
| * Copyright (C) 2017-2022 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "ContextDestructionObserver.h" |
| #include "EventTarget.h" |
| #include "JSDOMPromiseDeferred.h" |
| #include "JSValueInWrappedObject.h" |
| #include <wtf/Function.h> |
| #include <wtf/Ref.h> |
| #include <wtf/RefCounted.h> |
| #include <wtf/WeakPtr.h> |
| |
| namespace WebCore { |
| |
| class AbortAlgorithm; |
| class ScriptExecutionContext; |
| class WebCoreOpaqueRoot; |
| |
| class AbortSignal final : public RefCounted<AbortSignal>, public EventTargetWithInlineData, private ContextDestructionObserver { |
| WTF_MAKE_ISO_ALLOCATED_EXPORT(AbortSignal, WEBCORE_EXPORT); |
| public: |
| static Ref<AbortSignal> create(ScriptExecutionContext*); |
| WEBCORE_EXPORT ~AbortSignal(); |
| |
| static Ref<AbortSignal> abort(JSDOMGlobalObject&, ScriptExecutionContext&, JSC::JSValue reason); |
| static Ref<AbortSignal> timeout(ScriptExecutionContext&, uint64_t milliseconds); |
| |
| static bool whenSignalAborted(AbortSignal&, Ref<AbortAlgorithm>&&); |
| |
| void signalAbort(JSC::JSValue reason); |
| void signalFollow(AbortSignal&); |
| |
| bool aborted() const { return m_aborted; } |
| const JSValueInWrappedObject& reason() const { return m_reason; } |
| |
| bool hasActiveTimeoutTimer() const { return m_hasActiveTimeoutTimer; } |
| bool hasAbortEventListener() const { return m_hasAbortEventListener; } |
| |
| using RefCounted::ref; |
| using RefCounted::deref; |
| |
| using Algorithm = Function<void()>; |
| void addAlgorithm(Algorithm&& algorithm) { m_algorithms.append(WTFMove(algorithm)); } |
| |
| bool isFollowingSignal() const { return !!m_followingSignal; } |
| |
| void throwIfAborted(JSC::JSGlobalObject&); |
| |
| private: |
| enum class Aborted : bool { No, Yes }; |
| explicit AbortSignal(ScriptExecutionContext*, Aborted = Aborted::No, JSC::JSValue reason = JSC::jsUndefined()); |
| |
| void setHasActiveTimeoutTimer(bool hasActiveTimeoutTimer) { m_hasActiveTimeoutTimer = hasActiveTimeoutTimer; } |
| |
| // EventTarget. |
| EventTargetInterface eventTargetInterface() const final { return AbortSignalEventTargetInterfaceType; } |
| ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); } |
| void refEventTarget() final { ref(); } |
| void derefEventTarget() final { deref(); } |
| void eventListenersDidChange() final; |
| |
| bool m_aborted { false }; |
| Vector<Algorithm> m_algorithms; |
| WeakPtr<AbortSignal> m_followingSignal; |
| JSValueInWrappedObject m_reason; |
| bool m_hasActiveTimeoutTimer { false }; |
| bool m_hasAbortEventListener { false }; |
| }; |
| |
| WebCoreOpaqueRoot root(AbortSignal*); |
| |
| } // namespace WebCore |
| |