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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/events/DragEvent.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/events/DragEvent.cpp')
-rw-r--r--dom/events/DragEvent.cpp134
1 files changed, 134 insertions, 0 deletions
diff --git a/dom/events/DragEvent.cpp b/dom/events/DragEvent.cpp
new file mode 100644
index 000000000..9419ad9e9
--- /dev/null
+++ b/dom/events/DragEvent.cpp
@@ -0,0 +1,134 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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();
+}