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