199 lines
6.3 KiB
C++
199 lines
6.3 KiB
C++
/*
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* Copyright (C) 2001 Peter Kelly (pmk@post.com)
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* Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
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* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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* Copyright (C) 2003-2017 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "Event.h"
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#include "DOMWindow.h"
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#include "Document.h"
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#include "EventNames.h"
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#include "EventPath.h"
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#include "EventTarget.h"
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#include "InspectorInstrumentation.h"
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#include "Performance.h"
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#include "UserGestureIndicator.h"
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#include "WorkerGlobalScope.h"
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#include <wtf/HexNumber.h>
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/text/StringBuilder.h>
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#include <wtf/text/TextStream.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(Event);
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ALWAYS_INLINE Event::Event(MonotonicTime createTime, const AtomString& type, IsTrusted isTrusted, CanBubble canBubble, IsCancelable cancelable, IsComposed composed)
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: m_isInitialized { !type.isNull() }
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, m_canBubble { canBubble == CanBubble::Yes }
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, m_cancelable { cancelable == IsCancelable::Yes }
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, m_composed { composed == IsComposed::Yes }
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, m_propagationStopped { false }
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, m_immediatePropagationStopped { false }
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, m_wasCanceled { false }
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, m_defaultHandled { false }
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, m_isDefaultEventHandlerIgnored { false }
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, m_isTrusted { isTrusted == IsTrusted::Yes }
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, m_isExecutingPassiveEventListener { false }
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, m_currentTargetIsInShadowTree { false }
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, m_eventPhase { NONE }
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, m_type { type }
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, m_createTime { createTime }
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{
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}
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Event::Event(IsTrusted isTrusted)
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: Event { MonotonicTime::now(), { }, isTrusted, CanBubble::No, IsCancelable::No, IsComposed::No }
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{
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}
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Event::Event(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed)
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: Event { MonotonicTime::now(), eventType, IsTrusted::Yes, canBubble, isCancelable, isComposed }
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{
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ASSERT(!eventType.isNull());
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}
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Event::Event(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed, MonotonicTime timestamp, IsTrusted isTrusted)
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: Event { timestamp, eventType, isTrusted, canBubble, isCancelable, isComposed }
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{
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ASSERT(!eventType.isNull());
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}
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Event::Event(const AtomString& eventType, const EventInit& initializer, IsTrusted isTrusted)
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: Event { MonotonicTime::now(), eventType, isTrusted,
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initializer.bubbles ? CanBubble::Yes : CanBubble::No,
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initializer.cancelable ? IsCancelable::Yes : IsCancelable::No,
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initializer.composed ? IsComposed::Yes : IsComposed::No }
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{
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ASSERT(!eventType.isNull());
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}
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Event::~Event() = default;
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Ref<Event> Event::create(const AtomString& type, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed)
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{
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return adoptRef(*new Event(type, canBubble, isCancelable, isComposed));
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}
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Ref<Event> Event::createForBindings()
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{
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return adoptRef(*new Event);
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}
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Ref<Event> Event::create(const AtomString& type, const EventInit& initializer, IsTrusted isTrusted)
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{
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return adoptRef(*new Event(type, initializer, isTrusted));
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}
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void Event::initEvent(const AtomString& eventTypeArg, bool canBubbleArg, bool cancelableArg)
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{
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if (isBeingDispatched())
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return;
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m_isInitialized = true;
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m_propagationStopped = false;
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m_immediatePropagationStopped = false;
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m_wasCanceled = false;
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m_isTrusted = false;
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m_target = nullptr;
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m_type = eventTypeArg;
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m_canBubble = canBubbleArg;
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m_cancelable = cancelableArg;
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m_underlyingEvent = nullptr;
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}
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void Event::setTarget(RefPtr<EventTarget>&& target)
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{
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if (m_target == target)
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return;
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m_target = WTFMove(target);
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if (m_target)
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receivedTarget();
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}
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void Event::setCurrentTarget(EventTarget* currentTarget, std::optional<bool> isInShadowTree)
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{
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m_currentTarget = currentTarget;
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m_currentTargetIsInShadowTree = isInShadowTree ? *isInShadowTree : (is<Node>(currentTarget) && downcast<Node>(*currentTarget).isInShadowTree());
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}
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Vector<EventTarget*> Event::composedPath() const
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{
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if (!m_eventPath)
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return Vector<EventTarget*>();
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return m_eventPath->computePathUnclosedToTarget(*m_currentTarget);
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}
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void Event::setUnderlyingEvent(Event* underlyingEvent)
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{
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// Prohibit creation of a cycle by doing nothing if a cycle would be created.
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for (Event* event = underlyingEvent; event; event = event->underlyingEvent()) {
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if (event == this)
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return;
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}
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m_underlyingEvent = underlyingEvent;
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}
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DOMHighResTimeStamp Event::timeStampForBindings(ScriptExecutionContext& context) const
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{
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Performance* performance = nullptr;
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if (is<WorkerGlobalScope>(context))
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performance = &downcast<WorkerGlobalScope>(context).performance();
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else if (auto* window = downcast<Document>(context).domWindow())
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performance = &window->performance();
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if (!performance)
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return 0;
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return std::max(performance->relativeTimeFromTimeOriginInReducedResolution(m_createTime), 0.);
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}
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void Event::resetBeforeDispatch()
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{
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m_defaultHandled = false;
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}
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void Event::resetAfterDispatch()
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{
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m_eventPath = nullptr;
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setCurrentTarget(nullptr);
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m_eventPhase = NONE;
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m_propagationStopped = false;
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m_immediatePropagationStopped = false;
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InspectorInstrumentation::eventDidResetAfterDispatch(*this);
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}
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String Event::debugDescription() const
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{
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return makeString(type(), " phase ", eventPhase(), bubbles() ? " bubbles " : " ", cancelable() ? "cancelable " : " ", "0x"_s, hex(reinterpret_cast<uintptr_t>(this), Lowercase));
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}
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TextStream& operator<<(TextStream& ts, const Event& event)
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{
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ts << event.debugDescription();
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return ts;
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}
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} // namespace WebCore
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