Implement UIEvent.sourceDevice

Source/core/events/UIEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 #include "core/events/UIEvent.h"
 
-
 namespace blink {
 
 UIEvent::UIEvent()
     : m_detail(0)
+    , m_sourceDevice(InputDevice::create(false))

[Rick Byers, 2015/06/04 14:52:35]

These lines that create a source device out of nothing (without really knowing
where the event is coming from) are temporary, and we'll have to make sure we
find and remove them all before shipping source device.  So please add a comment
like this to each one:
"TODO(lanwei): Get correct InputDevice for this scenario"

 {
 }
 
 UIEvent::UIEvent(const AtomicString& eventType, bool canBubbleArg, bool cancelableArg, PassRefPtrWillBeRawPtr<AbstractView> viewArg, int detailArg)
     : Event(eventType, canBubbleArg, cancelableArg)
     , m_view(viewArg)
     , m_detail(detailArg)
+    , m_sourceDevice(InputDevice::create(false))
 {
 }
 
 UIEvent::UIEvent(const AtomicString& eventType, const UIEventInit& initializer)
     : Event(eventType, initializer)
     , m_view(initializer.view())
     , m_detail(initializer.detail())
+    , m_sourceDevice(initializer.sourceDevice())
 {
 }
 
 UIEvent::~UIEvent()
 {
 }
 
 void UIEvent::initUIEvent(const AtomicString& typeArg, bool canBubbleArg, bool cancelableArg, PassRefPtrWillBeRawPtr<AbstractView> viewArg, int detailArg)
 {
     if (dispatched())
         return;
 
     initEvent(typeArg, canBubbleArg, cancelableArg);
 
     m_view = viewArg;
     m_detail = detailArg;
+    m_sourceDevice = InputDevice::create(false);
 }
 
 bool UIEvent::isUIEvent() const
 {
     return true;
 }
 
 const AtomicString& UIEvent::interfaceName() const
 {
     return EventNames::UIEvent;
@@ skipping 30 matching lines @@
 }
 
 int UIEvent::which() const
 {
     return 0;
 }
 
 DEFINE_TRACE(UIEvent)
 {
     visitor->trace(m_view);
+    visitor->trace(m_sourceDevice);
     Event::trace(visitor);
 }
 
 } // namespace blink