Fire pointerup/down events for corresponding mouse events.

third_party/WebKit/Source/core/input/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 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
@@ skipping 265 matching lines @@
 
     void customizedScroll(const Node& startNode, ScrollState&);
 
     HitTestResult hitTestResultInFrame(LocalFrame*, const LayoutPoint&, HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active);
 
     void invalidateClick();
 
     void updateMouseEventTargetNode(Node*, const PlatformMouseEvent&);
 
     // Returns true when the sent PE has defaultPrevented or defaultHandled set.
-    bool dispatchPointerEventForMouseEvent(Node* target, const AtomicString& eventType, const PlatformMouseEvent&, Node* relatedTarget);
+    bool dispatchPointerEventForMouseEvent(Node* target, const AtomicString& eventType, const PlatformMouseEvent&, Node* relatedTarget = nullptr);
 
     // Dispatches mouseover, mouseout, mouseenter and mouseleave events to appropriate nodes when the mouse pointer moves from one node to another.
     void sendMouseEventsForNodeTransition(Node*, Node*, const PlatformMouseEvent&);
 
     MouseEventWithHitTestResults prepareMouseEvent(const HitTestRequest&, const PlatformMouseEvent&);
 
     bool dispatchMouseEvent(const AtomicString& eventType, Node* target, int clickCount, const PlatformMouseEvent&);
     bool dispatchDragEvent(const AtomicString& eventType, Node* target, const PlatformMouseEvent&, DataTransfer*);
 
     void clearDragDataTransfer();
@@ skipping 28 matching lines @@
     bool handleGestureShowPress();
 
     bool handleScrollGestureOnResizer(Node*, const PlatformGestureEvent&);
 
     bool passScrollGestureEventToWidget(const PlatformGestureEvent&, LayoutObject*);
 
     AutoscrollController* autoscrollController() const;
     bool panScrollInProgress() const;
     void setLastKnownMousePosition(const PlatformMouseEvent&);
 
+    void conditionallyEnableMouseEventForPointerTypeMouse(const PlatformMouseEvent&);
+
     bool shouldTopControlsConsumeScroll(FloatSize) const;
 
     // If the given element is a shadow host and its root has delegatesFocus=false flag,
     // slide focus to its inner element. Returns true if the resulting focus is different from
     // the given element.
     bool slideFocusOnShadowHostIfNecessary(const Element&);
 
     void dispatchPointerEventsForTouchEvent(const PlatformTouchEvent&, WillBeHeapVector<TouchInfo>&);
     void sendPointerCancels(WillBeHeapVector<TouchInfo>&);
 
@@ skipping 62 matching lines @@
     TouchTargetMap m_targetForTouchID;
 
     // If set, the document of the active touch sequence. Unset if no touch sequence active.
     RefPtrWillBeMember<Document> m_touchSequenceDocument;
     RefPtr<UserGestureToken> m_touchSequenceUserGestureToken;
 
     bool m_touchPressed;
 
     PointerIdManager m_pointerIdManager;
 
+    // Prevents firing mousedown, mousemove & mouseup in-between a canceled pointerdown and next pointerup/pointercancel.
+    // See "PREVENT MOUSE EVENT flag" in the spec:
+    //   https://w3c.github.io/pointerevents/#compatibility-mapping-with-mouse-events
+    bool m_preventMouseEventForPointerTypeMouse;
+
     // This is set upon sending a pointercancel for touch, prevents PE dispatches for touches until
     // all touch-points become inactive.
     // TODO(mustaq): Consider a state per pointerType, as in PointerIdManager? Exclude mouse?
     bool m_inPointerCanceledState;
 
     RefPtrWillBeMember<Node> m_scrollGestureHandlingNode;
     bool m_lastGestureScrollOverWidget;
     // The most recent element to scroll natively during this scroll
     // sequence. Null if no native element has scrolled this scroll
     // sequence, or if the most recent element to scroll used scroll
@@ skipping 17 matching lines @@
     // scroll which shouldn't propagate can't cause any element to
     // scroll other than the |m_previousGestureScrolledNode|.
     bool m_deltaConsumedForScrollSequence;
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::EventHandler::TouchInfo);
 
 #endif // EventHandler_h