Extract more of the mouse logic from EventHandler

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PointerEventManager_h
 #define PointerEventManager_h
 
 #include "core/CoreExport.h"
 #include "core/events/PointerEvent.h"
 #include "core/events/PointerEventFactory.h"
 #include "core/input/BoundaryEventDispatcher.h"
 #include "core/input/TouchEventManager.h"
 #include "public/platform/WebInputEventResult.h"
 #include "public/platform/WebPointerProperties.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 
 namespace blink {
 
 class LocalFrame;
 class MouseEventManager;
 
 // This class takes care of dispatching all pointer events and keeps track of
 // properties of active pointer events.
 class CORE_EXPORT PointerEventManager
     : public GarbageCollectedFinalized<PointerEventManager> {
   WTF_MAKE_NONCOPYABLE(PointerEventManager);
 
  public:
-  explicit PointerEventManager(LocalFrame*, MouseEventManager*);
+  PointerEventManager(LocalFrame*, MouseEventManager*);
   DECLARE_TRACE();
 
   // Sends the mouse pointer events and the boundary events
   // that it may cause. It also sends the compat mouse events
   // and sets the newNodeUnderMouse if the capturing is set
   // in this function.
   WebInputEventResult sendMousePointerEvent(Node* target,
                                             const AtomicString& type,
-                                            int clickCount,
-                                            const PlatformMouseEvent&,
-                                            Node* lastNodeUnderMouse,
-                                            Node** newNodeUnderMouse);
+                                            const PlatformMouseEvent&);
 
   WebInputEventResult handleTouchEvents(const PlatformTouchEvent&);
 
-  // Sends boundary events mouseout/leave/over/enter to the
-  // corresponding targets. This function sends pointerout/leave/over/enter
-  // only when isFrameBoundaryTransition is true which indicates the
-  // transition is over the document boundary and not only the elements border
-  // inside the document. If isFrameBoundaryTransition is false,
-  // then the event is a compatibility event like those created by touch
-  // and in that case the corresponding pointer events will be handled by
-  // sendTouchPointerEvent for example and there is no need to send pointer
-  // boundary events. Note that normal mouse events (e.g. mousemove/down/up)
+  // Sends boundary events pointerout/leave/over/enter and
+  // mouseout/leave/over/enter to the corresponding targets.
+  // inside the document. This functions handles the cases that pointer is
+  // leaving a frame. Note that normal mouse events (e.g. mousemove/down/up)
   // and their corresponding boundary events will be handled altogether by
   // sendMousePointerEvent function.
-  void sendMouseAndPossiblyPointerBoundaryEvents(
-      Node* exitedNode,
-      Node* enteredNode,
-      const PlatformMouseEvent&,
-      bool isFrameBoundaryTransition);
+  void sendMouseAndPointerBoundaryEvents(Node* enteredNode,
+                                         const PlatformMouseEvent&);
 
   // Resets the internal state of this object.
   void clear();
 
   void elementRemoved(EventTarget*);
 
   void setPointerCapture(int, EventTarget*);
   void releasePointerCapture(int, EventTarget*);
 
   // See Element::hasPointerCapture(int).
@@ skipping 87 matching lines @@
   void processPendingPointerCapture(PointerEvent*);
 
   // Processes the capture state of a pointer, updates node under
   // pointer, and sends corresponding boundary events for pointer if
   // setPointerPosition is true. It also sends corresponding boundary events
   // for mouse if sendMouseEvent is true.
   // Returns the target that the pointer event is supposed to be fired at.
   EventTarget* processCaptureAndPositionOfPointerEvent(
       PointerEvent*,
       EventTarget* hitTestTarget,
-      EventTarget* lastNodeUnderMouse = nullptr,
       const PlatformMouseEvent& = PlatformMouseEvent(),
-      bool sendMouseEvent = false,
-      bool setPointerPosition = true);
+      bool sendMouseEvent = false);
 
   void removeTargetFromPointerCapturingMapping(PointerCapturingMap&,
                                                const EventTarget*);
   EventTarget* getEffectiveTargetForPointerEvent(EventTarget*, int);
   EventTarget* getCapturingNode(int);
   void removePointer(PointerEvent*);
   WebInputEventResult dispatchPointerEvent(EventTarget*,
                                            PointerEvent*,
                                            bool checkForListener = false);
   void releasePointerCapture(int);
@@ skipping 34 matching lines @@
   PointerCapturingMap m_pendingPointerCaptureTarget;
 
   PointerEventFactory m_pointerEventFactory;
   Member<TouchEventManager> m_touchEventManager;
   Member<MouseEventManager> m_mouseEventManager;
 };
 
 }  // namespace blink
 
 #endif  // PointerEventManager_h