blob: e71133bed83a5c0a7c3cc9c64193408ac81e0d58 [file] [log] [blame]
/*
* Copyright (C) 2006-2018 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. ``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
* 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 "Cursor.h"
#include "DragActions.h"
#include "FocusDirection.h"
#include "HitTestRequest.h"
#include "LayoutPoint.h"
#include "PlatformMouseEvent.h"
#include "RenderObject.h"
#include "ScrollTypes.h"
#include "TextEventInputType.h"
#include "TextGranularity.h"
#include "Timer.h"
#include <memory>
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/RefPtr.h>
#include <wtf/WeakPtr.h>
#if PLATFORM(COCOA)
OBJC_CLASS NSView;
#endif
#if PLATFORM(IOS_FAMILY)
OBJC_CLASS WebEvent;
#endif
#if PLATFORM(MAC)
OBJC_CLASS NSEvent;
#endif
#if PLATFORM(IOS_FAMILY) && defined(__OBJC__)
#include "WAKAppKitStubs.h"
#endif
namespace WebCore {
class AutoscrollController;
class ContainerNode;
class DataTransfer;
class Document;
class Element;
class Event;
class EventTarget;
class FloatQuad;
class Frame;
class FrameView;
class HTMLFrameSetElement;
class HitTestResult;
class KeyboardEvent;
class MouseEventWithHitTestResults;
class Node;
class Pasteboard;
class PlatformGestureEvent;
class PlatformKeyboardEvent;
class PlatformTouchEvent;
class PlatformWheelEvent;
class RenderBox;
class RenderElement;
class RenderLayer;
class RenderWidget;
class ScrollableArea;
class Scrollbar;
class TextEvent;
class Touch;
class TouchEvent;
class VisibleSelection;
class WheelEvent;
class Widget;
struct DragState;
#if ENABLE(DRAG_SUPPORT)
extern const int LinkDragHysteresis;
extern const int ImageDragHysteresis;
extern const int TextDragHysteresis;
extern const int ColorDragHystersis;
extern const int GeneralDragHysteresis;
#endif
#if ENABLE(IOS_GESTURE_EVENTS) || ENABLE(MAC_GESTURE_EVENTS)
extern const float GestureUnknown;
extern const unsigned InvalidTouchIdentifier;
#endif
enum AppendTrailingWhitespace { ShouldAppendTrailingWhitespace, DontAppendTrailingWhitespace };
enum CheckDragHysteresis { ShouldCheckDragHysteresis, DontCheckDragHysteresis };
enum class ImmediateActionStage {
None,
PerformedHitTest,
ActionUpdated,
ActionCancelledWithoutUpdate,
ActionCancelledAfterUpdate,
ActionCompleted
};
class EventHandler {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit EventHandler(Frame&);
~EventHandler();
void clear();
void nodeWillBeRemoved(Node&);
WEBCORE_EXPORT VisiblePosition selectionExtentRespectingEditingBoundary(const VisibleSelection&, const LayoutPoint&, Node*);
#if ENABLE(DRAG_SUPPORT)
void updateSelectionForMouseDrag();
#endif
#if ENABLE(PAN_SCROLLING)
void didPanScrollStart();
void didPanScrollStop();
void startPanScrolling(RenderElement&);
#endif
void stopAutoscrollTimer(bool rendererIsBeingDestroyed = false);
RenderBox* autoscrollRenderer() const;
void updateAutoscrollRenderer();
bool autoscrollInProgress() const;
bool mouseDownWasInSubframe() const { return m_mouseDownWasInSubframe; }
bool panScrollInProgress() const;
WEBCORE_EXPORT void dispatchFakeMouseMoveEventSoon();
void dispatchFakeMouseMoveEventSoonInQuad(const FloatQuad&);
WEBCORE_EXPORT HitTestResult hitTestResultAtPoint(const LayoutPoint&, HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::DisallowUserAgentShadowContent, const LayoutSize& padding = LayoutSize()) const;
bool mousePressed() const { return m_mousePressed; }
Node* mousePressNode() const { return m_mousePressNode.get(); }
WEBCORE_EXPORT void setCapturingMouseEventsElement(Element*);
#if ENABLE(POINTER_EVENTS)
void pointerCaptureElementDidChange(Element*);
#endif
#if ENABLE(DRAG_SUPPORT)
struct DragTargetResponse {
bool accept { false };
Optional<DragOperation> operation;
};
DragTargetResponse updateDragAndDrop(const PlatformMouseEvent&, const std::function<std::unique_ptr<Pasteboard>()>&, DragOperation sourceOperation, bool draggingFiles);
void cancelDragAndDrop(const PlatformMouseEvent&, std::unique_ptr<Pasteboard>&&, DragOperation, bool draggingFiles);
bool performDragAndDrop(const PlatformMouseEvent&, std::unique_ptr<Pasteboard>&&, DragOperation, bool draggingFiles);
void updateDragStateAfterEditDragIfNeeded(Element& rootEditableElement);
RefPtr<Element> draggedElement() const;
#endif
void scheduleHoverStateUpdate();
#if ENABLE(CURSOR_SUPPORT)
void scheduleCursorUpdate();
#endif
void setResizingFrameSet(HTMLFrameSetElement*);
void resizeLayerDestroyed();
IntPoint lastKnownMousePosition() const;
IntPoint lastKnownMouseGlobalPosition() const { return m_lastKnownMouseGlobalPosition; }
Cursor currentMouseCursor() const { return m_currentMouseCursor; }
IntPoint targetPositionInWindowForSelectionAutoscroll() const;
bool shouldUpdateAutoscroll();
static Frame* subframeForTargetNode(Node*);
static Frame* subframeForHitTestResult(const MouseEventWithHitTestResults&);
WEBCORE_EXPORT bool scrollOverflow(ScrollDirection, ScrollGranularity, Node* startingNode = nullptr);
WEBCORE_EXPORT bool scrollRecursively(ScrollDirection, ScrollGranularity, Node* startingNode = nullptr);
WEBCORE_EXPORT bool logicalScrollRecursively(ScrollLogicalDirection, ScrollGranularity, Node* startingNode = nullptr);
bool tabsToLinks(KeyboardEvent*) const;
bool tabsToAllFormControls(KeyboardEvent*) const;
WEBCORE_EXPORT bool mouseMoved(const PlatformMouseEvent&);
WEBCORE_EXPORT bool passMouseMovedEventToScrollbars(const PlatformMouseEvent&);
void lostMouseCapture();
WEBCORE_EXPORT bool handleMousePressEvent(const PlatformMouseEvent&);
bool handleMouseMoveEvent(const PlatformMouseEvent&, HitTestResult* hoveredNode = nullptr, bool onlyUpdateScrollbars = false);
WEBCORE_EXPORT bool handleMouseReleaseEvent(const PlatformMouseEvent&);
bool handleMouseForceEvent(const PlatformMouseEvent&);
WEBCORE_EXPORT bool handleWheelEvent(const PlatformWheelEvent&);
void defaultWheelEventHandler(Node*, WheelEvent&);
bool handlePasteGlobalSelection(const PlatformMouseEvent&);
void platformPrepareForWheelEvents(const PlatformWheelEvent&, const HitTestResult&, RefPtr<Element>& eventTarget, RefPtr<ContainerNode>& scrollableContainer, WeakPtr<ScrollableArea>&, bool& isOverWidget);
void platformRecordWheelEvent(const PlatformWheelEvent&);
bool platformCompleteWheelEvent(const PlatformWheelEvent&, ContainerNode* scrollableContainer, const WeakPtr<ScrollableArea>&);
bool platformCompletePlatformWidgetWheelEvent(const PlatformWheelEvent&, const Widget&, ContainerNode* scrollableContainer);
void platformNotifyIfEndGesture(const PlatformWheelEvent&, const WeakPtr<ScrollableArea>&);
#if ENABLE(IOS_TOUCH_EVENTS) || ENABLE(IOS_GESTURE_EVENTS)
using TouchArray = Vector<RefPtr<Touch>>;
using EventTargetTouchMap = HashMap<EventTarget*, TouchArray*>;
#endif
#if ENABLE(IOS_TOUCH_EVENTS) || ENABLE(IOS_GESTURE_EVENTS) || ENABLE(MAC_GESTURE_EVENTS)
using EventTargetSet = HashSet<RefPtr<EventTarget>>;
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
bool dispatchTouchEvent(const PlatformTouchEvent&, const AtomString&, const EventTargetTouchMap&, float, float);
bool dispatchSimulatedTouchEvent(IntPoint location);
Frame* touchEventTargetSubframe() const { return m_touchEventTargetSubframe.get(); }
const TouchArray& touches() const { return m_touches; }
#endif
#if ENABLE(IOS_GESTURE_EVENTS)
bool dispatchGestureEvent(const PlatformTouchEvent&, const AtomString&, const EventTargetSet&, float, float);
#elif ENABLE(MAC_GESTURE_EVENTS)
bool dispatchGestureEvent(const PlatformGestureEvent&, const AtomString&, const EventTargetSet&, float, float);
WEBCORE_EXPORT bool handleGestureEvent(const PlatformGestureEvent&);
#endif
#if PLATFORM(IOS_FAMILY)
void defaultTouchEventHandler(Node&, TouchEvent&);
WEBCORE_EXPORT void dispatchSyntheticMouseOut(const PlatformMouseEvent&);
WEBCORE_EXPORT void dispatchSyntheticMouseMove(const PlatformMouseEvent&);
#endif
#if ENABLE(CONTEXT_MENUS)
WEBCORE_EXPORT bool sendContextMenuEvent(const PlatformMouseEvent&);
WEBCORE_EXPORT bool sendContextMenuEventForKey();
#endif
void setMouseDownMayStartAutoscroll() { m_mouseDownMayStartAutoscroll = true; }
bool needsKeyboardEventDisambiguationQuirks() const;
WEBCORE_EXPORT static OptionSet<PlatformEvent::Modifier> accessKeyModifiers();
WEBCORE_EXPORT bool handleAccessKey(const PlatformKeyboardEvent&);
WEBCORE_EXPORT bool keyEvent(const PlatformKeyboardEvent&);
void defaultKeyboardEventHandler(KeyboardEvent&);
WEBCORE_EXPORT void capsLockStateMayHaveChanged() const;
bool accessibilityPreventsEventPropagation(KeyboardEvent&);
WEBCORE_EXPORT void handleKeyboardSelectionMovementForAccessibility(KeyboardEvent&);
bool handleTextInputEvent(const String& text, Event* underlyingEvent = nullptr, TextEventInputType = TextEventInputKeyboard);
void defaultTextInputEventHandler(TextEvent&);
#if ENABLE(DRAG_SUPPORT)
WEBCORE_EXPORT bool eventMayStartDrag(const PlatformMouseEvent&) const;
WEBCORE_EXPORT void didStartDrag();
WEBCORE_EXPORT void dragCancelled();
WEBCORE_EXPORT void dragSourceEndedAt(const PlatformMouseEvent&, DragOperation, MayExtendDragSession = MayExtendDragSession::No);
#endif
void focusDocumentView();
WEBCORE_EXPORT void sendScrollEvent();
#if PLATFORM(MAC)
WEBCORE_EXPORT void mouseDown(NSEvent *, NSEvent *correspondingPressureEvent);
WEBCORE_EXPORT void mouseDragged(NSEvent *, NSEvent *correspondingPressureEvent);
WEBCORE_EXPORT void mouseUp(NSEvent *, NSEvent *correspondingPressureEvent);
WEBCORE_EXPORT void mouseMoved(NSEvent *, NSEvent *correspondingPressureEvent);
WEBCORE_EXPORT void pressureChange(NSEvent *, NSEvent* correspondingPressureEvent);
WEBCORE_EXPORT bool keyEvent(NSEvent *);
WEBCORE_EXPORT bool wheelEvent(NSEvent *);
#endif
#if PLATFORM(IOS_FAMILY)
WEBCORE_EXPORT void mouseDown(WebEvent *);
WEBCORE_EXPORT void mouseUp(WebEvent *);
WEBCORE_EXPORT void mouseMoved(WebEvent *);
WEBCORE_EXPORT bool keyEvent(WebEvent *);
WEBCORE_EXPORT bool wheelEvent(WebEvent *);
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
WEBCORE_EXPORT void touchEvent(WebEvent *);
#endif
#if PLATFORM(MAC)
WEBCORE_EXPORT void passMouseMovedEventToScrollbars(NSEvent *, NSEvent* correspondingPressureEvent);
WEBCORE_EXPORT void sendFakeEventsAfterWidgetTracking(NSEvent *initiatingEvent);
void setActivationEventNumber(int num) { m_activationEventNumber = num; }
WEBCORE_EXPORT static NSEvent *currentNSEvent();
static NSEvent *correspondingPressureEvent();
#endif
#if PLATFORM(IOS_FAMILY)
static WebEvent *currentEvent();
void invalidateClick();
#endif
#if ENABLE(TOUCH_EVENTS)
WEBCORE_EXPORT bool handleTouchEvent(const PlatformTouchEvent&);
#endif
bool useHandCursor(Node*, bool isOverLink, bool shiftKey);
void updateCursor();
bool isHandlingWheelEvent() const { return m_isHandlingWheelEvent; }
WEBCORE_EXPORT void setImmediateActionStage(ImmediateActionStage stage);
ImmediateActionStage immediateActionStage() const { return m_immediateActionStage; }
static Widget* widgetForEventTarget(Element* eventTarget);
#if PLATFORM(IOS_FAMILY) && ENABLE(DRAG_SUPPORT)
WEBCORE_EXPORT bool tryToBeginDragAtPoint(const IntPoint& clientPosition, const IntPoint& globalPosition);
#endif
#if PLATFORM(IOS_FAMILY)
WEBCORE_EXPORT void startSelectionAutoscroll(RenderObject* renderer, const FloatPoint& positionInWindow);
WEBCORE_EXPORT void cancelSelectionAutoscroll();
IntPoint m_targetAutoscrollPositionInWindow;
bool m_isAutoscrolling { false };
#endif
private:
#if ENABLE(DRAG_SUPPORT)
static DragState& dragState();
static const Seconds TextDragDelay;
#endif
bool eventActivatedView(const PlatformMouseEvent&) const;
bool updateSelectionForMouseDownDispatchingSelectStart(Node*, const VisibleSelection&, TextGranularity);
void selectClosestWordFromHitTestResult(const HitTestResult&, AppendTrailingWhitespace);
VisibleSelection selectClosestWordFromHitTestResultBasedOnLookup(const HitTestResult&);
void selectClosestWordFromMouseEvent(const MouseEventWithHitTestResults&);
void selectClosestContextualWordFromMouseEvent(const MouseEventWithHitTestResults&);
void selectClosestContextualWordOrLinkFromMouseEvent(const MouseEventWithHitTestResults&);
bool handleMouseDoubleClickEvent(const PlatformMouseEvent&);
WEBCORE_EXPORT bool handleMousePressEvent(const MouseEventWithHitTestResults&);
bool handleMousePressEventSingleClick(const MouseEventWithHitTestResults&);
bool handleMousePressEventDoubleClick(const MouseEventWithHitTestResults&);
bool handleMousePressEventTripleClick(const MouseEventWithHitTestResults&);
#if ENABLE(DRAG_SUPPORT)
bool handleMouseDraggedEvent(const MouseEventWithHitTestResults&, CheckDragHysteresis = ShouldCheckDragHysteresis);
bool shouldAllowMouseDownToStartDrag() const;
#endif
WEBCORE_EXPORT bool handleMouseReleaseEvent(const MouseEventWithHitTestResults&);
bool internalKeyEvent(const PlatformKeyboardEvent&);
Optional<Cursor> selectCursor(const HitTestResult&, bool shiftKey);
void updateCursor(FrameView&, const HitTestResult&, bool shiftKey);
void hoverTimerFired();
#if ENABLE(CURSOR_SUPPORT)
void cursorUpdateTimerFired();
#endif
bool logicalScrollOverflow(ScrollLogicalDirection, ScrollGranularity, Node* startingNode = nullptr);
bool shouldSwapScrollDirection(const HitTestResult&, const PlatformWheelEvent&) const;
bool mouseDownMayStartSelect() const { return m_mouseDownMayStartSelect; }
static bool isKeyboardOptionTab(KeyboardEvent&);
static bool eventInvertsTabsToLinksClientCallResult(KeyboardEvent&);
#if !ENABLE(IOS_TOUCH_EVENTS)
void fakeMouseMoveEventTimerFired();
void cancelFakeMouseMoveEvent();
#endif
bool isInsideScrollbar(const IntPoint&) const;
#if ENABLE(TOUCH_EVENTS)
bool dispatchSyntheticTouchEventIfEnabled(const PlatformMouseEvent&);
#endif
#if !PLATFORM(IOS_FAMILY)
void invalidateClick();
#endif
Node* nodeUnderMouse() const;
enum class FireMouseOverOut { No, Yes };
void updateMouseEventTargetNode(Node*, const PlatformMouseEvent&, FireMouseOverOut);
MouseEventWithHitTestResults prepareMouseEvent(const HitTestRequest&, const PlatformMouseEvent&);
bool dispatchMouseEvent(const AtomString& eventType, Node* target, bool cancelable, int clickCount, const PlatformMouseEvent&, bool setUnder);
#if ENABLE(DRAG_SUPPORT)
bool dispatchDragEvent(const AtomString& eventType, Element& target, const PlatformMouseEvent&, DataTransfer&);
DragTargetResponse dispatchDragEnterOrDragOverEvent(const AtomString& eventType, Element& target, const PlatformMouseEvent&, std::unique_ptr<Pasteboard>&& , DragOperation, bool draggingFiles);
void invalidateDataTransfer();
bool handleDrag(const MouseEventWithHitTestResults&, CheckDragHysteresis);
#endif
bool handleMouseUp(const MouseEventWithHitTestResults&);
#if ENABLE(DRAG_SUPPORT)
void clearDragState();
void dispatchDragSrcEvent(const AtomString& eventType, const PlatformMouseEvent&);
bool dispatchDragStartEventOnSourceElement(DataTransfer&);
bool dragHysteresisExceeded(const FloatPoint&) const;
bool dragHysteresisExceeded(const IntPoint&) const;
#endif
bool mouseMovementExceedsThreshold(const FloatPoint&, int pointsThreshold) const;
bool passMousePressEventToSubframe(MouseEventWithHitTestResults&, Frame* subframe);
bool passMouseMoveEventToSubframe(MouseEventWithHitTestResults&, Frame* subframe, HitTestResult* hoveredNode = nullptr);
bool passMouseReleaseEventToSubframe(MouseEventWithHitTestResults&, Frame* subframe);
bool passSubframeEventToSubframe(MouseEventWithHitTestResults&, Frame* subframe, HitTestResult* hoveredNode = nullptr);
bool passMousePressEventToScrollbar(MouseEventWithHitTestResults&, Scrollbar*);
bool passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults&);
bool passWidgetMouseDownEventToWidget(RenderWidget*);
bool passMouseDownEventToWidget(Widget*);
bool widgetDidHandleWheelEvent(const PlatformWheelEvent&, Widget&);
bool completeWidgetWheelEvent(const PlatformWheelEvent&, const WeakPtr<Widget>&, const WeakPtr<ScrollableArea>&, ContainerNode*);
void defaultSpaceEventHandler(KeyboardEvent&);
void defaultBackspaceEventHandler(KeyboardEvent&);
void defaultTabEventHandler(KeyboardEvent&);
void defaultArrowEventHandler(FocusDirection, KeyboardEvent&);
#if ENABLE(DRAG_SUPPORT)
DragSourceAction updateDragSourceActionsAllowed() const;
bool supportsSelectionUpdatesOnMouseDrag() const;
#endif
// The following are called at the beginning of handleMouseUp and handleDrag.
// If they return true it indicates that they have consumed the event.
bool eventLoopHandleMouseUp(const MouseEventWithHitTestResults&);
#if ENABLE(DRAG_SUPPORT)
bool eventLoopHandleMouseDragged(const MouseEventWithHitTestResults&);
void updateSelectionForMouseDrag(const HitTestResult&);
#endif
enum class SetOrClearLastScrollbar { Clear, Set };
void updateLastScrollbarUnderMouse(Scrollbar*, SetOrClearLastScrollbar);
void setFrameWasScrolledByUser();
bool capturesDragging() const { return m_capturesDragging; }
#if PLATFORM(COCOA) && defined(__OBJC__)
NSView *mouseDownViewIfStillGood();
PlatformMouseEvent currentPlatformMouseEvent() const;
#endif
#if ENABLE(FULLSCREEN_API)
bool isKeyEventAllowedInFullScreen(const PlatformKeyboardEvent&) const;
#endif
void setLastKnownMousePosition(const PlatformMouseEvent&);
#if ENABLE(CURSOR_VISIBILITY)
void startAutoHideCursorTimer();
void cancelAutoHideCursorTimer();
void autoHideCursorTimerFired();
#endif
void clearOrScheduleClearingLatchedStateIfNeeded(const PlatformWheelEvent&);
void clearLatchedState();
bool shouldSendMouseEventsToInactiveWindows() const;
Frame& m_frame;
bool m_mousePressed { false };
bool m_capturesDragging { false };
RefPtr<Node> m_mousePressNode;
bool m_mouseDownMayStartSelect { false };
#if ENABLE(DRAG_SUPPORT)
bool m_mouseDownMayStartDrag { false };
bool m_dragMayStartSelectionInstead { false };
#endif
bool m_mouseDownWasSingleClickInSelection { false };
enum SelectionInitiationState { HaveNotStartedSelection, PlacedCaret, ExtendedSelection };
SelectionInitiationState m_selectionInitiationState { HaveNotStartedSelection };
#if ENABLE(DRAG_SUPPORT)
LayoutPoint m_dragStartPosition;
#endif
Timer m_hoverTimer;
#if ENABLE(CURSOR_SUPPORT)
Timer m_cursorUpdateTimer;
#endif
#if PLATFORM(MAC)
Timer m_pendingMomentumWheelEventsTimer;
#endif
std::unique_ptr<AutoscrollController> m_autoscrollController;
bool m_mouseDownMayStartAutoscroll { false };
bool m_mouseDownWasInSubframe { false };
#if !ENABLE(IOS_TOUCH_EVENTS)
Timer m_fakeMouseMoveEventTimer;
#endif
bool m_svgPan { false };
RenderLayer* m_resizeLayer { nullptr };
RefPtr<Element> m_capturingMouseEventsElement;
bool m_eventHandlerWillResetCapturingMouseEventsElement { false };
RefPtr<Element> m_elementUnderMouse;
RefPtr<Element> m_lastElementUnderMouse;
RefPtr<Frame> m_lastMouseMoveEventSubframe;
WeakPtr<Scrollbar> m_lastScrollbarUnderMouse;
Cursor m_currentMouseCursor;
int m_clickCount { 0 };
RefPtr<Node> m_clickNode;
#if ENABLE(IOS_GESTURE_EVENTS)
float m_gestureInitialDiameter { GestureUnknown };
float m_gestureInitialRotation { GestureUnknown };
#endif
#if ENABLE(IOS_GESTURE_EVENTS) || ENABLE(MAC_GESTURE_EVENTS)
float m_gestureLastDiameter { GestureUnknown };
float m_gestureLastRotation { GestureUnknown };
EventTargetSet m_gestureTargets;
#endif
#if ENABLE(MAC_GESTURE_EVENTS)
bool m_hasActiveGesture { false };
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
unsigned m_firstTouchID { InvalidTouchIdentifier };
TouchArray m_touches;
RefPtr<Frame> m_touchEventTargetSubframe;
#endif
#if ENABLE(DRAG_SUPPORT)
RefPtr<Element> m_dragTarget;
bool m_shouldOnlyFireDragOverEvent { false };
#endif
RefPtr<HTMLFrameSetElement> m_frameSetBeingResized;
LayoutSize m_offsetFromResizeCorner; // In the coords of m_resizeLayer.
bool m_mousePositionIsUnknown { true };
IntPoint m_lastKnownMousePosition;
IntPoint m_lastKnownMouseGlobalPosition;
IntPoint m_mouseDownPos; // In our view's coords.
WallTime m_mouseDownTimestamp;
PlatformMouseEvent m_mouseDown;
#if ENABLE(POINTER_EVENTS)
PlatformMouseEvent m_lastPlatformMouseEvent;
#endif
#if PLATFORM(COCOA)
NSView *m_mouseDownView { nullptr };
bool m_sendingEventToSubview { false };
#endif
#if PLATFORM(MAC)
int m_activationEventNumber { -1 };
#endif
#if ENABLE(TOUCH_EVENTS) && !ENABLE(IOS_TOUCH_EVENTS)
using TouchTargetMap = HashMap<int, RefPtr<EventTarget>>;
TouchTargetMap m_originatingTouchPointTargets;
RefPtr<Document> m_originatingTouchPointDocument;
unsigned m_originatingTouchPointTargetKey { 0 };
bool m_touchPressed { false };
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
unsigned touchIdentifierForMouseEvents { 0 };
#endif
#if ENABLE(POINTER_EVENTS) && ENABLE(IOS_TOUCH_EVENTS)
unsigned m_touchIdentifierForPrimaryTouch { 0 };
#endif
double m_maxMouseMovedDuration { 0 };
bool m_didStartDrag { false };
bool m_isHandlingWheelEvent { false };
#if PLATFORM(IOS_FAMILY)
bool m_shouldAllowMouseDownToStartDrag { false };
#endif
#if ENABLE(CURSOR_VISIBILITY)
Timer m_autoHideCursorTimer;
#endif
ImmediateActionStage m_immediateActionStage { ImmediateActionStage::None };
};
} // namespace WebCore