michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/DragEvent.h"
michael@0: #include "mozilla/MouseEvents.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "prtime.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: DragEvent::DragEvent(EventTarget* aOwner,
michael@0:                      nsPresContext* aPresContext,
michael@0:                      WidgetDragEvent* aEvent)
michael@0:   : MouseEvent(aOwner, aPresContext,
michael@0:                aEvent ? aEvent : new WidgetDragEvent(false, 0, nullptr))
michael@0: {
michael@0:   if (aEvent) {
michael@0:     mEventIsInternal = false;
michael@0:   }
michael@0:   else {
michael@0:     mEventIsInternal = true;
michael@0:     mEvent->time = PR_Now();
michael@0:     mEvent->refPoint.x = mEvent->refPoint.y = 0;
michael@0:     mEvent->AsMouseEvent()->inputSource = nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN;
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(DragEvent, MouseEvent)
michael@0: NS_IMPL_RELEASE_INHERITED(DragEvent, MouseEvent)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN(DragEvent)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMDragEvent)
michael@0: NS_INTERFACE_MAP_END_INHERITING(MouseEvent)
michael@0: 
michael@0: void
michael@0: DragEvent::InitDragEvent(const nsAString& aType,
michael@0:                          bool aCanBubble,
michael@0:                          bool aCancelable,
michael@0:                          nsIDOMWindow* aView,
michael@0:                          int32_t aDetail,
michael@0:                          int32_t aScreenX,
michael@0:                          int32_t aScreenY,
michael@0:                          int32_t aClientX,
michael@0:                          int32_t aClientY,
michael@0:                          bool aCtrlKey,
michael@0:                          bool aAltKey,
michael@0:                          bool aShiftKey,
michael@0:                          bool aMetaKey,
michael@0:                          uint16_t aButton,
michael@0:                          EventTarget* aRelatedTarget,
michael@0:                          DataTransfer* aDataTransfer,
michael@0:                          ErrorResult& aError)
michael@0: {
michael@0:   aError =
michael@0:     MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable,
michael@0:                                aView, aDetail, aScreenX, aScreenY,
michael@0:                                aClientX, aClientY, aCtrlKey, aAltKey,
michael@0:                                aShiftKey, aMetaKey, aButton, aRelatedTarget);
michael@0:   if (aError.Failed()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (mEventIsInternal && mEvent) {
michael@0:     mEvent->AsDragEvent()->dataTransfer = aDataTransfer;
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DragEvent::InitDragEvent(const nsAString& aType,
michael@0:                          bool aCanBubble,
michael@0:                          bool aCancelable,
michael@0:                          nsIDOMWindow* aView,
michael@0:                          int32_t aDetail,
michael@0:                          int32_t aScreenX,
michael@0:                          int32_t aScreenY,
michael@0:                          int32_t aClientX,
michael@0:                          int32_t aClientY,
michael@0:                          bool aCtrlKey,
michael@0:                          bool aAltKey,
michael@0:                          bool aShiftKey,
michael@0:                          bool aMetaKey,
michael@0:                          uint16_t aButton,
michael@0:                          nsIDOMEventTarget* aRelatedTarget,
michael@0:                          nsIDOMDataTransfer* aDataTransfer)
michael@0: {
michael@0:   nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(aDataTransfer);
michael@0: 
michael@0:   nsresult rv =
michael@0:     MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, aView, aDetail,
michael@0:                                aScreenX, aScreenY, aClientX, aClientY,
michael@0:                                aCtrlKey, aAltKey, aShiftKey, aMetaKey, aButton,
michael@0:                                aRelatedTarget);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   if (mEventIsInternal && mEvent) {
michael@0:     mEvent->AsDragEvent()->dataTransfer = dataTransfer;
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: DragEvent::GetDataTransfer(nsIDOMDataTransfer** aDataTransfer)
michael@0: {
michael@0:   NS_IF_ADDREF(*aDataTransfer = GetDataTransfer());
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: DataTransfer*
michael@0: DragEvent::GetDataTransfer()
michael@0: {
michael@0:   // the dataTransfer field of the event caches the DataTransfer associated
michael@0:   // with the drag. It is initialized when an attempt is made to retrieve it
michael@0:   // rather that when the event is created to avoid duplicating the data when
michael@0:   // no listener ever uses it.
michael@0:   if (!mEvent || mEvent->eventStructType != NS_DRAG_EVENT) {
michael@0:     NS_WARNING("Tried to get dataTransfer from non-drag event!");
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   WidgetDragEvent* dragEvent = mEvent->AsDragEvent();
michael@0:   // for synthetic events, just use the supplied data transfer object even if null
michael@0:   if (!mEventIsInternal) {
michael@0:     nsresult rv = nsContentUtils::SetDataTransferInEvent(dragEvent);
michael@0:     NS_ENSURE_SUCCESS(rv, nullptr);
michael@0:   }
michael@0: 
michael@0:   return dragEvent->dataTransfer;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: nsresult
michael@0: NS_NewDOMDragEvent(nsIDOMEvent** aInstancePtrResult,
michael@0:                    EventTarget* aOwner,
michael@0:                    nsPresContext* aPresContext,
michael@0:                    WidgetDragEvent* aEvent) 
michael@0: {
michael@0:   DragEvent* event = new DragEvent(aOwner, aPresContext, aEvent);
michael@0:   return CallQueryInterface(event, aInstancePtrResult);
michael@0: }