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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/DragEvent.h"
#include "mozilla/MouseEvents.h"
#include "nsContentUtils.h"
#include "prtime.h"
namespace mozilla {
namespace dom {
DragEvent::DragEvent(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetDragEvent* aEvent)
: MouseEvent(aOwner, aPresContext,
aEvent ? aEvent :
new WidgetDragEvent(false, eVoidEvent, nullptr))
{
if (aEvent) {
mEventIsInternal = false;
}
else {
mEventIsInternal = true;
mEvent->mTime = PR_Now();
mEvent->mRefPoint = LayoutDeviceIntPoint(0, 0);
mEvent->AsMouseEvent()->inputSource = nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN;
}
}
NS_IMPL_ADDREF_INHERITED(DragEvent, MouseEvent)
NS_IMPL_RELEASE_INHERITED(DragEvent, MouseEvent)
NS_INTERFACE_MAP_BEGIN(DragEvent)
NS_INTERFACE_MAP_ENTRY(nsIDOMDragEvent)
NS_INTERFACE_MAP_END_INHERITING(MouseEvent)
void
DragEvent::InitDragEvent(const nsAString& aType,
bool aCanBubble,
bool aCancelable,
nsGlobalWindow* aView,
int32_t aDetail,
int32_t aScreenX,
int32_t aScreenY,
int32_t aClientX,
int32_t aClientY,
bool aCtrlKey,
bool aAltKey,
bool aShiftKey,
bool aMetaKey,
uint16_t aButton,
EventTarget* aRelatedTarget,
DataTransfer* aDataTransfer)
{
NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable,
aView, aDetail, aScreenX, aScreenY,
aClientX, aClientY, aCtrlKey, aAltKey,
aShiftKey, aMetaKey, aButton, aRelatedTarget);
if (mEventIsInternal) {
mEvent->AsDragEvent()->mDataTransfer = aDataTransfer;
}
}
NS_IMETHODIMP
DragEvent::GetDataTransfer(nsIDOMDataTransfer** aDataTransfer)
{
NS_IF_ADDREF(*aDataTransfer = GetDataTransfer());
return NS_OK;
}
DataTransfer*
DragEvent::GetDataTransfer()
{
// the dataTransfer field of the event caches the DataTransfer associated
// with the drag. It is initialized when an attempt is made to retrieve it
// rather that when the event is created to avoid duplicating the data when
// no listener ever uses it.
if (!mEvent || mEvent->mClass != eDragEventClass) {
NS_WARNING("Tried to get dataTransfer from non-drag event!");
return nullptr;
}
WidgetDragEvent* dragEvent = mEvent->AsDragEvent();
// for synthetic events, just use the supplied data transfer object even if null
if (!mEventIsInternal) {
nsresult rv = nsContentUtils::SetDataTransferInEvent(dragEvent);
NS_ENSURE_SUCCESS(rv, nullptr);
}
return dragEvent->mDataTransfer;
}
// static
already_AddRefed<DragEvent>
DragEvent::Constructor(const GlobalObject& aGlobal,
const nsAString& aType,
const DragEventInit& aParam,
ErrorResult& aRv)
{
nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
RefPtr<DragEvent> e = new DragEvent(t, nullptr, nullptr);
bool trusted = e->Init(t);
e->InitDragEvent(aType, aParam.mBubbles, aParam.mCancelable,
aParam.mView, aParam.mDetail, aParam.mScreenX,
aParam.mScreenY, aParam.mClientX, aParam.mClientY,
aParam.mCtrlKey, aParam.mAltKey, aParam.mShiftKey,
aParam.mMetaKey, aParam.mButton, aParam.mRelatedTarget,
aParam.mDataTransfer);
e->InitializeExtraMouseEventDictionaryMembers(aParam);
e->SetTrusted(trusted);
e->SetComposed(aParam.mComposed);
return e.forget();
}
} // namespace dom
} // namespace mozilla
using namespace mozilla;
using namespace mozilla::dom;
already_AddRefed<DragEvent>
NS_NewDOMDragEvent(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetDragEvent* aEvent)
{
RefPtr<DragEvent> event =
new DragEvent(aOwner, aPresContext, aEvent);
return event.forget();
}
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