1 files changed, 75 insertions, 0 deletions
diff --git a/dom/events/MutationEvent.cpp b/dom/events/MutationEvent.cpp
new file mode 100644
index 0000000000..f1e91c10a5
--- /dev/null
+++ b/dom/events/MutationEvent.cpp
@@ -0,0 +1,75 @@
+/* -*- 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 "nsCOMPtr.h"
+#include "mozilla/dom/MutationEvent.h"
+#include "mozilla/InternalMutationEvent.h"
+
+class nsPresContext;
+
+namespace mozilla::dom {
+
+MutationEvent::MutationEvent(EventTarget* aOwner, nsPresContext* aPresContext,
+                             InternalMutationEvent* aEvent)
+    : Event(aOwner, aPresContext,
+            aEvent ? aEvent : new InternalMutationEvent(false, eVoidEvent)) {
+  mEventIsInternal = (aEvent == nullptr);
+}
+
+nsINode* MutationEvent::GetRelatedNode() {
+  return mEvent->AsMutationEvent()->mRelatedNode;
+}
+
+void MutationEvent::GetPrevValue(nsAString& aPrevValue) const {
+  InternalMutationEvent* mutation = mEvent->AsMutationEvent();
+  if (mutation->mPrevAttrValue) mutation->mPrevAttrValue->ToString(aPrevValue);
+}
+
+void MutationEvent::GetNewValue(nsAString& aNewValue) const {
+  InternalMutationEvent* mutation = mEvent->AsMutationEvent();
+  if (mutation->mNewAttrValue) mutation->mNewAttrValue->ToString(aNewValue);
+}
+
+void MutationEvent::GetAttrName(nsAString& aAttrName) const {
+  InternalMutationEvent* mutation = mEvent->AsMutationEvent();
+  if (mutation->mAttrName) mutation->mAttrName->ToString(aAttrName);
+}
+
+uint16_t MutationEvent::AttrChange() {
+  return mEvent->AsMutationEvent()->mAttrChange;
+}
+
+void MutationEvent::InitMutationEvent(const nsAString& aType, bool aCanBubble,
+                                      bool aCancelable, nsINode* aRelatedNode,
+                                      const nsAString& aPrevValue,
+                                      const nsAString& aNewValue,
+                                      const nsAString& aAttrName,
+                                      uint16_t& aAttrChange, ErrorResult& aRv) {
+  NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
+
+  Event::InitEvent(aType, aCanBubble, aCancelable);
+
+  InternalMutationEvent* mutation = mEvent->AsMutationEvent();
+  mutation->mRelatedNode = aRelatedNode;
+  if (!aPrevValue.IsEmpty()) mutation->mPrevAttrValue = NS_Atomize(aPrevValue);
+  if (!aNewValue.IsEmpty()) mutation->mNewAttrValue = NS_Atomize(aNewValue);
+  if (!aAttrName.IsEmpty()) {
+    mutation->mAttrName = NS_Atomize(aAttrName);
+  }
+  mutation->mAttrChange = aAttrChange;
+}
+
+}  // namespace mozilla::dom
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+already_AddRefed<MutationEvent> NS_NewDOMMutationEvent(
+    EventTarget* aOwner, nsPresContext* aPresContext,
+    InternalMutationEvent* aEvent) {
+  RefPtr<MutationEvent> it = new MutationEvent(aOwner, aPresContext, aEvent);
+  return it.forget();
+}