Plumb gesture source value through Blink.

third_party/WebKit/Source/core/events/GestureEvent.cpp

 /*
  * Copyright (C) 2012 Google 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:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 namespace blink {
 
 PassRefPtrWillBeRawPtr<GestureEvent> GestureEvent::create(PassRefPtrWillBeRawPtr<AbstractView> view, const PlatformGestureEvent& event)
 {
     AtomicString eventType;
     float deltaX = 0;
     float deltaY = 0;
     float velocityX = 0;
     float velocityY = 0;
     bool inertial = false;
+
+    GestureSource source;
+    switch (event.source()) {
+    case PlatformGestureSourceTouchpad:
+        source = GestureSourceTouchpad;
+        break;
+    case PlatformGestureSourceTouchscreen:
+        source = GestureSourceTouchscreen;
+        break;
+    default:
+        source = GestureSourceUninitialized;

[tdresser, 2015/10/14 15:14:20]

Should this case ever happen?

[wjmaclean, 2015/10/14 15:55:09]

Done.

+    }
+
     switch (event.type()) {
     case PlatformEvent::GestureScrollBegin:
         eventType = EventTypeNames::gesturescrollstart; break;
     case PlatformEvent::GestureScrollEnd:
         eventType = EventTypeNames::gesturescrollend; break;
     case PlatformEvent::GestureScrollUpdate:
         // Only deltaX/Y are used when converting this
         // back to a PlatformGestureEvent.
         eventType = EventTypeNames::gesturescrollupdate;
         deltaX = event.deltaX();
@@ skipping 16 matching lines @@
         velocityY = event.velocityY();
         break;
     case PlatformEvent::GestureTwoFingerTap:
     case PlatformEvent::GesturePinchBegin:
     case PlatformEvent::GesturePinchEnd:
     case PlatformEvent::GesturePinchUpdate:
     case PlatformEvent::GestureTapDownCancel:
     default:
         return nullptr;
     }
-    return adoptRefWillBeNoop(new GestureEvent(eventType, view, event.globalPosition().x(), event.globalPosition().y(), event.position().x(), event.position().y(), event.modifiers(), deltaX, deltaY, velocityX, velocityY, inertial, event.timestamp(), event.resendingPluginId()));
+    return adoptRefWillBeNoop(new GestureEvent(eventType, view, event.globalPosition().x(), event.globalPosition().y(), event.position().x(), event.position().y(), event.modifiers(), deltaX, deltaY, velocityX, velocityY, inertial, event.timestamp(), event.resendingPluginId(), source));
 }
 
 const AtomicString& GestureEvent::interfaceName() const
 {
     // FIXME: when a GestureEvent.idl interface is defined, return the string "GestureEvent".
     // Until that happens, do not advertise an interface that does not exist, since it will
     // trip up the bindings integrity checks.
     return UIEvent::interfaceName();
 }
 
 bool GestureEvent::isGestureEvent() const
 {
     return true;
 }
 
 GestureEvent::GestureEvent()
     : m_deltaX(0)
     , m_deltaY(0)
     , m_velocityX(0)
     , m_velocityY(0)
     , m_inertial(false)
+    , m_source(GestureSourceUninitialized)
     , m_resendingPluginId(-1)
 {
 }
 
-GestureEvent::GestureEvent(const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView> view, int screenX, int screenY, int clientX, int clientY, PlatformEvent::Modifiers modifiers, float deltaX, float deltaY, float velocityX, float velocityY, bool inertial, double timestamp, int resendingPluginId)
+GestureEvent::GestureEvent(const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView> view, int screenX, int screenY, int clientX, int clientY, PlatformEvent::Modifiers modifiers, float deltaX, float deltaY, float velocityX, float velocityY, bool inertial, double timestamp, int resendingPluginId, GestureSource source)
     : MouseRelatedEvent(type, true, true, view, 0, IntPoint(screenX, screenY), IntPoint(clientX, clientY), IntPoint(0, 0), modifiers, PositionType::Position)
     , m_deltaX(deltaX)
     , m_deltaY(deltaY)
     , m_velocityX(velocityX)
     , m_velocityY(velocityY)
     , m_inertial(inertial)
+    , m_source(source)
     , m_resendingPluginId(resendingPluginId)
 {
     setPlatformTimeStamp(timestamp);
 }
 
 PassRefPtrWillBeRawPtr<EventDispatchMediator> GestureEvent::createMediator()
 {
     return GestureEventDispatchMediator::create(this);
 }
 
@@ skipping 13 matching lines @@
 }
 
 bool GestureEventDispatchMediator::dispatchEvent(EventDispatcher& dispatcher) const
 {
     dispatcher.dispatch();
     ASSERT(!event().defaultPrevented());
     return event().defaultHandled() || event().defaultPrevented();
 }
 
 } // namespace blink