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

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/events/DragEvent.h"
   7
   8 #include "core/clipboard/DataTransfer.h"
   9 #include "core/dom/Element.h"
  10 #include "core/events/EventDispatcher.h"
  11
  12 namespace blink {
  13
  14 PassRefPtrWillBeRawPtr<DragEvent> DragEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
  15     int detail, int screenX, int screenY, int windowX, int windowY,
  16     int movementX, int movementY,
  17     bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
  18     short button, unsigned short buttons,
  19     PassRefPtrWillBeRawPtr<EventTarget> relatedTarget, DataTransfer* dataTransfer, PlatformMouseEvent::SyntheticEventType syntheticEventType,
  20     double uiCreateTime)
  21 {
  22     return adoptRefWillBeNoop(new DragEvent(type, canBubble, cancelable, view,
  23         detail, screenX, screenY, windowX, windowY,
  24         movementX, movementY,
  25         ctrlKey, altKey, shiftKey, metaKey, button, buttons, relatedTarget, dataTransfer, syntheticEventType, uiCreateTime));
  26 }
  27
  28
  29 DragEvent::DragEvent()
  30     : m_dataTransfer(nullptr)
  31 {
  32 }
  33
  34 DragEvent::DragEvent(DataTransfer* dataTransfer)
  35     : m_dataTransfer(dataTransfer)
  36 {
  37 }
  38
  39 DragEvent::DragEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
  40     int detail, int screenX, int screenY, int windowX, int windowY,
  41     int movementX, int movementY,
  42     bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
  43     short button, unsigned short buttons, PassRefPtrWillBeRawPtr<EventTarget> relatedTarget,
  44     DataTransfer* dataTransfer, PlatformMouseEvent::SyntheticEventType syntheticEventType,
  45     double uiCreateTime)
  46     : MouseEvent(eventType, canBubble, cancelable, view, detail, screenX, screenY,
  47         windowX, windowY, movementX, movementY, ctrlKey, altKey, shiftKey, metaKey, button, buttons, relatedTarget,
  48         syntheticEventType, uiCreateTime)
  49     , m_dataTransfer(dataTransfer)
  50
  51 {
  52 }
  53
  54 DragEvent::DragEvent(const AtomicString& type, const DragEventInit& initializer)
  55     : MouseEvent(type, initializer)
  56     , m_dataTransfer(initializer.dataTransfer())
  57 {
  58 }
  59
  60 bool DragEvent::isDragEvent() const
  61 {
  62     return true;
  63 }
  64
  65 bool DragEvent::isMouseEvent() const
  66 {
  67     return false;
  68 }
  69
  70 PassRefPtrWillBeRawPtr<EventDispatchMediator> DragEvent::createMediator()
  71 {
  72     return DragEventDispatchMediator::create(this);
  73 }
  74
  75 DEFINE_TRACE(DragEvent)
  76 {
  77     visitor->trace(m_dataTransfer);
  78     MouseEvent::trace(visitor);
  79 }
  80
  81 PassRefPtrWillBeRawPtr<DragEventDispatchMediator> DragEventDispatchMediator::create(PassRefPtrWillBeRawPtr<DragEvent> dragEvent)
  82 {
  83     return adoptRefWillBeNoop(new DragEventDispatchMediator(dragEvent));
  84 }
  85
  86 DragEventDispatchMediator::DragEventDispatchMediator(PassRefPtrWillBeRawPtr<DragEvent> dragEvent)
  87     : EventDispatchMediator(dragEvent)
  88 {
  89 }
  90
  91 DragEvent& DragEventDispatchMediator::event() const
  92 {
  93     return toDragEvent(EventDispatchMediator::event());
  94 }
  95
  96 bool DragEventDispatchMediator::dispatchEvent(EventDispatcher& dispatcher) const
  97 {
  98     event().eventPath().adjustForRelatedTarget(dispatcher.node(), event().relatedTarget());
  99     return EventDispatchMediator::dispatchEvent(dispatcher);
 100 }
 101
 102 } // namespace blink