#pragma once
#include "DOMHighResTimeStamp.h"
#include "EventInit.h"
#include "EventInterfaces.h"
#include "ExceptionOr.h"
#include "ScriptWrappable.h"
#include <wtf/MonotonicTime.h>
#include <wtf/TypeCasts.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
class EventPath;
class EventTarget;
class ScriptExecutionContext;
enum EventInterface {
#define DOM_EVENT_INTERFACE_DECLARE(name) name##InterfaceType,
DOM_EVENT_INTERFACES_FOR_EACH(DOM_EVENT_INTERFACE_DECLARE)
#undef DOM_EVENT_INTERFACE_DECLARE
};
class Event : public ScriptWrappable, public RefCounted<Event> {
public:
enum class IsTrusted { No, Yes };
enum PhaseType {
NONE = 0,
CAPTURING_PHASE = 1,
AT_TARGET = 2,
BUBBLING_PHASE = 3
};
static Ref<Event> create(const AtomicString& type, bool canBubble, bool cancelable);
static Ref<Event> createForBindings();
static Ref<Event> create(const AtomicString& type, const EventInit&, IsTrusted = IsTrusted::No);
virtual ~Event();
WEBCORE_EXPORT void initEvent(const AtomicString& type, bool canBubble, bool cancelable);
bool isInitialized() const { return m_isInitialized; }
const AtomicString& type() const { return m_type; }
void setType(const AtomicString& type) { m_type = type; }
EventTarget* target() const { return m_target.get(); }
void setTarget(RefPtr<EventTarget>&&);
EventTarget* currentTarget() const { return m_currentTarget.get(); }
void setCurrentTarget(EventTarget*);
unsigned short eventPhase() const { return m_eventPhase; }
void setEventPhase(PhaseType phase) { m_eventPhase = phase; }
bool bubbles() const { return m_canBubble; }
bool cancelable() const { return m_cancelable; }
WEBCORE_EXPORT bool composed() const;
DOMHighResTimeStamp timeStampForBindings(ScriptExecutionContext&) const;
MonotonicTime timeStamp() const { return m_createTime; }
void setEventPath(const EventPath& path) { m_eventPath = &path; }
Vector<EventTarget*> composedPath() const;
void stopPropagation() { m_propagationStopped = true; }
void stopImmediatePropagation() { m_immediatePropagationStopped = true; }
bool isTrusted() const { return m_isTrusted; }
void setUntrusted() { m_isTrusted = false; }
bool legacyReturnValue() const { return !defaultPrevented(); }
void setLegacyReturnValue(bool returnValue) { setDefaultPrevented(!returnValue); }
virtual EventInterface eventInterface() const { return EventInterfaceType; }
virtual bool isBeforeTextInsertedEvent() const { return false; }
virtual bool isBeforeUnloadEvent() const { return false; }
virtual bool isClipboardEvent() const { return false; }
virtual bool isCompositionEvent() const { return false; }
virtual bool isErrorEvent() const { return false; }
virtual bool isFocusEvent() const { return false; }
virtual bool isInputEvent() const { return false; }
virtual bool isKeyboardEvent() const { return false; }
virtual bool isMouseEvent() const { return false; }
virtual bool isTextEvent() const { return false; }
virtual bool isTouchEvent() const { return false; }
virtual bool isUIEvent() const { return false; }
virtual bool isVersionChangeEvent() const { return false; }
virtual bool isWheelEvent() const { return false; }
bool propagationStopped() const { return m_propagationStopped || m_immediatePropagationStopped; }
bool immediatePropagationStopped() const { return m_immediatePropagationStopped; }
void resetAfterDispatch();
bool defaultPrevented() const { return m_defaultPrevented; }
void preventDefault();
void setDefaultPrevented(bool defaultPrevented) { m_defaultPrevented = defaultPrevented; }
bool defaultHandled() const { return m_defaultHandled; }
void setDefaultHandled() { m_defaultHandled = true; }
void setInPassiveListener(bool value) { m_isExecutingPassiveEventListener = value; }
bool cancelBubble() const { return propagationStopped(); }
void setCancelBubble(bool);
Event* underlyingEvent() const { return m_underlyingEvent.get(); }
void setUnderlyingEvent(Event*);
bool isBeingDispatched() const { return eventPhase(); }
virtual EventTarget* relatedTarget() const { return nullptr; }
virtual void setRelatedTarget(EventTarget&) { }
protected:
explicit Event(IsTrusted = IsTrusted::No);
WEBCORE_EXPORT Event(const AtomicString& type, bool canBubble, bool cancelable);
Event(const AtomicString& type, bool canBubble, bool cancelable, MonotonicTime timestamp);
Event(const AtomicString& type, const EventInit&, IsTrusted);
virtual void receivedTarget() { }
private:
AtomicString m_type;
bool m_isInitialized { false };
bool m_canBubble { false };
bool m_cancelable { false };
bool m_composed { false };
bool m_propagationStopped { false };
bool m_immediatePropagationStopped { false };
bool m_defaultPrevented { false };
bool m_defaultHandled { false };
bool m_isTrusted { false };
bool m_isExecutingPassiveEventListener { false };
PhaseType m_eventPhase { NONE };
RefPtr<EventTarget> m_currentTarget;
const EventPath* m_eventPath { nullptr };
RefPtr<EventTarget> m_target;
MonotonicTime m_createTime;
RefPtr<Event> m_underlyingEvent;
};
inline Ref<Event> Event::create(const AtomicString& type, bool canBubble, bool cancelable)
{
return adoptRef(*new Event(type, canBubble, cancelable));
}
inline Ref<Event> Event::createForBindings()
{
return adoptRef(*new Event);
}
inline Ref<Event> Event::create(const AtomicString& type, const EventInit& initializer, IsTrusted isTrusted)
{
return adoptRef(*new Event(type, initializer, isTrusted));
}
inline void Event::preventDefault()
{
if (m_cancelable && !m_isExecutingPassiveEventListener)
m_defaultPrevented = true;
}
inline void Event::setCancelBubble(bool cancel)
{
if (cancel)
m_propagationStopped = true;
}
}
#define SPECIALIZE_TYPE_TRAITS_EVENT(ToValueTypeName) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
static bool isType(const WebCore::Event& event) { return event.is##ToValueTypeName(); } \
SPECIALIZE_TYPE_TRAITS_END()