Implement DragEvent and move MouseEvent.dataTransfer

Source/core/events/DragEvent.cpp

+// Copyright 2015 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.
+
+#include "config.h"
+#include "core/events/DragEvent.h"
+
+#include "core/clipboard/DataTransfer.h"
+#include "core/dom/Element.h"
+#include "core/events/EventDispatcher.h"
+
+namespace blink {
+
+PassRefPtrWillBeRawPtr<DragEvent> DragEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
+    int detail, int screenX, int screenY, int windowX, int windowY,
+    int movementX, int movementY,
+    bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
+    short button, unsigned short buttons,
+    PassRefPtrWillBeRawPtr<EventTarget> relatedTarget, DataTransfer* dataTransfer, bool isSimulated, PlatformMouseEvent::SyntheticEventType syntheticEventType,
+    double uiCreateTime)
+{
+    return adoptRefWillBeNoop(new DragEvent(type, canBubble, cancelable, view,
+        detail, screenX, screenY, windowX, windowY,
+        movementX, movementY,
+        ctrlKey, altKey, shiftKey, metaKey, button, buttons, relatedTarget, dataTransfer, isSimulated, syntheticEventType, uiCreateTime));
+}
+
+
+DragEvent::DragEvent()
+    : m_dataTransfer(nullptr)
+{
+}
+
+DragEvent::DragEvent(DataTransfer* dataTransfer)
+    : m_dataTransfer(dataTransfer)
+{
+}
+
+DragEvent::DragEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
+    int detail, int screenX, int screenY, int windowX, int windowY,
+    int movementX, int movementY,
+    bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
+    short button, unsigned short buttons, PassRefPtrWillBeRawPtr<EventTarget> relatedTarget,
+    DataTransfer* dataTransfer, bool isSimulated, PlatformMouseEvent::SyntheticEventType syntheticEventType,
+    double uiCreateTime)
+    : MouseEvent(eventType, canBubble, cancelable, view, detail, screenX, screenY,
+        windowX, windowY, movementX, movementY, ctrlKey, altKey, shiftKey, metaKey, button, buttons, relatedTarget,
+        isSimulated, syntheticEventType, uiCreateTime)
+    , m_dataTransfer(dataTransfer)
+
+{
+}
+
+DragEvent::DragEvent(const AtomicString& type, const DragEventInit& initializer)
+    : MouseEvent(type, initializer)
+    , m_dataTransfer(initializer.dataTransfer())
+{
+}
+
+bool DragEvent::isDragEvent() const
+{
+    return true;
+}
+
+bool DragEvent::isMouseEvent() const
+{
+    return false;
+}
+
+PassRefPtrWillBeRawPtr<EventDispatchMediator> DragEvent::createMediator()
+{
+    return DragEventDispatchMediator::create(this);
+}
+
+DEFINE_TRACE(DragEvent)
+{
+    visitor->trace(m_dataTransfer);
+    MouseEvent::trace(visitor);
+}
+
+PassRefPtrWillBeRawPtr<DragEventDispatchMediator> DragEventDispatchMediator::create(PassRefPtrWillBeRawPtr<DragEvent> dragEvent)
+{
+    return adoptRefWillBeNoop(new DragEventDispatchMediator(dragEvent));
+}
+
+DragEventDispatchMediator::DragEventDispatchMediator(PassRefPtrWillBeRawPtr<DragEvent> dragEvent)
+    : EventDispatchMediator(dragEvent)
+{
+}
+
+DragEvent& DragEventDispatchMediator::event() const
+{
+    return toDragEvent(EventDispatchMediator::event());
+}
+
+bool DragEventDispatchMediator::dispatchEvent(EventDispatcher& dispatcher) const
+{
+    event().eventPath().adjustForRelatedTarget(dispatcher.node(), event().relatedTarget());
+    return EventDispatchMediator::dispatchEvent(dispatcher);
+}
+
+} // namespace blink