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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) 2003-2024 Apple Inc. All rights reserved.
* Copyright (C) 2017 Google 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 "MouseEvent.h"
#include "EventNames.h"
#include "HTMLIFrameElement.h"
#include "JSDOMConvertInterface.h"
#include "JSDOMConvertNullable.h"
#include "JSEventTarget.h"
#include "JSEventTargetCustom.h"
#include "LocalFrame.h"
#include "LocalFrameView.h"
#include "PlatformMouseEvent.h"
#include <JavaScriptCore/CallFrame.h>
#include <JavaScriptCore/JSGlobalObjectInlines.h>
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(MouseEvent);
Ref<MouseEvent> MouseEvent::create(const AtomString& type, const MouseEventInit& initializer)
{
return adoptRef(*new MouseEvent(type, initializer));
}
Ref<MouseEvent> MouseEvent::create(const AtomString& eventType, RefPtr<WindowProxy>&& view, const PlatformMouseEvent& event, int detail, Node* relatedTarget)
{
auto& eventNames = WebCore::eventNames();
bool isMouseEnterOrLeave = eventType == eventNames.mouseenterEvent || eventType == eventNames.mouseleaveEvent;
auto isCancelable = !isMouseEnterOrLeave ? IsCancelable::Yes : IsCancelable::No;
auto canBubble = !isMouseEnterOrLeave ? CanBubble::Yes : CanBubble::No;
auto isComposed = !isMouseEnterOrLeave ? IsComposed::Yes : IsComposed::No;
return MouseEvent::create(eventType, canBubble, isCancelable, isComposed, event.timestamp().approximateMonotonicTime(), WTFMove(view), detail,
event.globalPosition(), event.position(), event.movementDelta().x(), event.movementDelta().y(),
event.modifiers(), event.button(), event.buttons(), relatedTarget, event.force(), event.syntheticClickType());
}
Ref<MouseEvent> MouseEvent::create(const AtomString& type, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed, MonotonicTime timestamp, RefPtr<WindowProxy>&& view, int detail,
const IntPoint& screenLocation, const IntPoint& windowLocation, double movementX, double movementY, OptionSet<Modifier> modifiers, MouseButton button, unsigned short buttons,
EventTarget* relatedTarget, double force, SyntheticClickType syntheticClickType, IsSimulated isSimulated, IsTrusted isTrusted)
{
return adoptRef(*new MouseEvent(type, canBubble, isCancelable, isComposed, timestamp, WTFMove(view), detail,
screenLocation, windowLocation, movementX, movementY, modifiers, button, buttons, relatedTarget, force, syntheticClickType, isSimulated, isTrusted));
}
Ref<MouseEvent> MouseEvent::create(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed, RefPtr<WindowProxy>&& view, int detail,
int screenX, int screenY, int clientX, int clientY, OptionSet<Modifier> modifiers, MouseButton button, unsigned short buttons,
SyntheticClickType syntheticClickType, EventTarget* relatedTarget)
{
return adoptRef(*new MouseEvent(eventType, canBubble, isCancelable, isComposed, WTFMove(view), detail, { screenX, screenY }, { clientX, clientY }, 0, 0, modifiers, button, buttons, syntheticClickType, relatedTarget));
}
MouseEvent::MouseEvent() = default;
MouseEvent::MouseEvent(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed,
MonotonicTime timestamp, RefPtr<WindowProxy>&& view, int detail,
const IntPoint& screenLocation, const IntPoint& windowLocation, double movementX, double movementY, OptionSet<Modifier> modifiers, MouseButton button, unsigned short buttons,
EventTarget* relatedTarget, double force, SyntheticClickType syntheticClickType, IsSimulated isSimulated, IsTrusted isTrusted)
: MouseRelatedEvent(eventType, canBubble, isCancelable, isComposed, timestamp, WTFMove(view), detail, screenLocation, windowLocation, movementX, movementY, modifiers, isSimulated, isTrusted)
, m_button(enumToUnderlyingType(button == MouseButton::None ? MouseButton::Left : button))
, m_buttons(buttons)
, m_syntheticClickType(button == MouseButton::None ? SyntheticClickType::NoTap : syntheticClickType)
, m_buttonDown(button != MouseButton::None)
, m_relatedTarget(relatedTarget)
, m_force(force)
{
}
MouseEvent::MouseEvent(const AtomString& eventType, CanBubble canBubble, IsCancelable isCancelable, IsComposed isComposed,
RefPtr<WindowProxy>&& view, int detail, const IntPoint& screenLocation, const IntPoint& clientLocation, double movementX, double movementY,
OptionSet<Modifier> modifiers, MouseButton button, unsigned short buttons, SyntheticClickType syntheticClickType, EventTarget* relatedTarget)
: MouseRelatedEvent(eventType, canBubble, isCancelable, isComposed, MonotonicTime::now(), WTFMove(view), detail, screenLocation, { }, movementX, movementY, modifiers, IsSimulated::No)
, m_button(enumToUnderlyingType(button == MouseButton::None ? MouseButton::Left : button))
, m_buttons(buttons)
, m_syntheticClickType(button == MouseButton::None ? SyntheticClickType::NoTap : syntheticClickType)
, m_buttonDown(button != MouseButton::None)
, m_relatedTarget(relatedTarget)
{
initCoordinates(clientLocation);
}
MouseEvent::MouseEvent(const AtomString& eventType, const MouseEventInit& initializer)
: MouseRelatedEvent(eventType, initializer)
, m_button(initializer.button == enumToUnderlyingType(MouseButton::None) ? enumToUnderlyingType(MouseButton::Left) : initializer.button)
, m_buttons(initializer.buttons)
, m_buttonDown(initializer.button != enumToUnderlyingType(MouseButton::None))
, m_relatedTarget(initializer.relatedTarget)
{
initCoordinates({ initializer.clientX, initializer.clientY });
}
MouseEvent::~MouseEvent() = default;
void MouseEvent::initMouseEvent(const AtomString& type, bool canBubble, bool cancelable, RefPtr<WindowProxy>&& view, int detail,
int screenX, int screenY, int clientX, int clientY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, int16_t button, EventTarget* relatedTarget)
{
if (isBeingDispatched())
return;
initUIEvent(type, canBubble, cancelable, WTFMove(view), detail);
m_screenLocation = IntPoint(screenX, screenY);
setModifierKeys(ctrlKey, altKey, shiftKey, metaKey);
m_button = button == enumToUnderlyingType(MouseButton::None) ? enumToUnderlyingType(MouseButton::Left) : button;
m_syntheticClickType = SyntheticClickType::NoTap;
m_buttonDown = button != enumToUnderlyingType(MouseButton::None);
m_relatedTarget = relatedTarget;
initCoordinates(IntPoint(clientX, clientY));
setIsSimulated(false);
}
EventInterface MouseEvent::eventInterface() const
{
return MouseEventInterfaceType;
}
bool MouseEvent::isMouseEvent() const
{
return true;
}
bool MouseEvent::canTriggerActivationBehavior(const Event& event)
{
if (event.type() != eventNames().clickEvent)
return false;
auto* mouseEvent = dynamicDowncast<MouseEvent>(event);
return !mouseEvent || mouseEvent->button() != MouseButton::Right;
}
MouseButton MouseEvent::button() const
{
static constexpr std::array mouseButtonCases { MouseButton::None, MouseButton::PointerHasNotChanged, MouseButton::Left, MouseButton::Middle, MouseButton::Right };
const auto isKnownButton = WTF::anyOf(mouseButtonCases, [buttonValue = this->m_button](MouseButton button) {
return buttonValue == enumToUnderlyingType(button);
});
return isKnownButton ? static_cast<MouseButton>(m_button) : MouseButton::Other;
}
unsigned MouseEvent::which() const
{
// For the DOM, the return values for left, middle and right mouse buttons are 0, 1, 2, respectively.
// For the Netscape "which" property, the return values for left, middle and right mouse buttons are 1, 2, 3, respectively.
// So we must add 1.
if (!m_buttonDown)
return 0;
return static_cast<unsigned>(m_button + 1);
}
RefPtr<Node> MouseEvent::toElement() const
{
// MSIE extension - "the object toward which the user is moving the mouse pointer"
RefPtr<EventTarget> target;
auto& eventNames = WebCore::eventNames();
if (type() == eventNames.mouseoutEvent || type() == eventNames.mouseleaveEvent)
target = relatedTarget();
else
target = this->target();
return dynamicDowncast<Node>(WTFMove(target));
}
RefPtr<Node> MouseEvent::fromElement() const
{
// MSIE extension - "object from which activation or the mouse pointer is exiting during the event" (huh?)
RefPtr<EventTarget> target;
auto& eventNames = WebCore::eventNames();
if (type() == eventNames.mouseoutEvent || type() == eventNames.mouseleaveEvent)
target = this->target();
else
target = relatedTarget();
return dynamicDowncast<Node>(WTFMove(target));
}
} // namespace WebCore
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