1 files changed, 80 insertions, 0 deletions
diff --git a/dom/events/ScrollAreaEvent.cpp b/dom/events/ScrollAreaEvent.cpp
new file mode 100644
index 0000000000..4cc7bc61e7
--- /dev/null
+++ b/dom/events/ScrollAreaEvent.cpp
@@ -0,0 +1,80 @@
+/* -*- 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 "base/basictypes.h"
+#include "ipc/IPCMessageUtils.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
+#include "mozilla/dom/DOMRect.h"
+#include "mozilla/dom/ScrollAreaEvent.h"
+#include "mozilla/ContentEvents.h"
+
+namespace mozilla::dom {
+
+ScrollAreaEvent::ScrollAreaEvent(EventTarget* aOwner,
+                                 nsPresContext* aPresContext,
+                                 InternalScrollAreaEvent* aEvent)
+    : UIEvent(aOwner, aPresContext, aEvent), mClientArea(new DOMRect(nullptr)) {
+  mClientArea->SetLayoutRect(aEvent ? aEvent->mArea : nsRect());
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(ScrollAreaEvent, UIEvent, mClientArea)
+
+NS_IMPL_ADDREF_INHERITED(ScrollAreaEvent, UIEvent)
+NS_IMPL_RELEASE_INHERITED(ScrollAreaEvent, UIEvent)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ScrollAreaEvent)
+NS_INTERFACE_MAP_END_INHERITING(UIEvent)
+
+void ScrollAreaEvent::InitScrollAreaEvent(const nsAString& aEventType,
+                                          bool aCanBubble, bool aCancelable,
+                                          nsGlobalWindowInner* aView,
+                                          int32_t aDetail, float aX, float aY,
+                                          float aWidth, float aHeight) {
+  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
+
+  UIEvent::InitUIEvent(aEventType, aCanBubble, aCancelable, aView, aDetail);
+  mClientArea->SetRect(aX, aY, aWidth, aHeight);
+}
+
+void ScrollAreaEvent::Serialize(IPC::MessageWriter* aWriter,
+                                bool aSerializeInterfaceType) {
+  if (aSerializeInterfaceType) {
+    IPC::WriteParam(aWriter, u"scrollareaevent"_ns);
+  }
+
+  Event::Serialize(aWriter, false);
+
+  IPC::WriteParam(aWriter, X());
+  IPC::WriteParam(aWriter, Y());
+  IPC::WriteParam(aWriter, Width());
+  IPC::WriteParam(aWriter, Height());
+}
+
+bool ScrollAreaEvent::Deserialize(IPC::MessageReader* aReader) {
+  NS_ENSURE_TRUE(Event::Deserialize(aReader), false);
+
+  float x, y, width, height;
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &x), false);
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &y), false);
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &width), false);
+  NS_ENSURE_TRUE(IPC::ReadParam(aReader, &height), false);
+  mClientArea->SetRect(x, y, width, height);
+
+  return true;
+}
+
+}  // namespace mozilla::dom
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+already_AddRefed<ScrollAreaEvent> NS_NewDOMScrollAreaEvent(
+    EventTarget* aOwner, nsPresContext* aPresContext,
+    InternalScrollAreaEvent* aEvent) {
+  RefPtr<ScrollAreaEvent> ev =
+      new ScrollAreaEvent(aOwner, aPresContext, aEvent);
+  return ev.forget();
+}