1 files changed, 66 insertions, 0 deletions
diff --git a/dom/events/InternalMutationEvent.h b/dom/events/InternalMutationEvent.h
new file mode 100644
index 0000000000..41a20677e4
--- /dev/null
+++ b/dom/events/InternalMutationEvent.h
@@ -0,0 +1,66 @@
+/* -*- 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/. */
+
+#ifndef mozilla_MutationEvent_h__
+#define mozilla_MutationEvent_h__
+
+#include "mozilla/BasicEvents.h"
+#include "nsCOMPtr.h"
+#include "nsAtom.h"
+#include "nsINode.h"
+
+namespace mozilla {
+
+class InternalMutationEvent : public WidgetEvent {
+ public:
+  virtual InternalMutationEvent* AsMutationEvent() override { return this; }
+
+  InternalMutationEvent(bool aIsTrusted, EventMessage aMessage)
+      : WidgetEvent(aIsTrusted, aMessage, eMutationEventClass), mAttrChange(0) {
+    mFlags.mCancelable = false;
+  }
+
+  virtual WidgetEvent* Duplicate() const override {
+    MOZ_ASSERT(mClass == eMutationEventClass,
+               "Duplicate() must be overridden by sub class");
+    InternalMutationEvent* result = new InternalMutationEvent(false, mMessage);
+    result->AssignMutationEventData(*this, true);
+    result->mFlags = mFlags;
+    return result;
+  }
+
+  nsCOMPtr<nsINode> mRelatedNode;
+  RefPtr<nsAtom> mAttrName;
+  RefPtr<nsAtom> mPrevAttrValue;
+  RefPtr<nsAtom> mNewAttrValue;
+  unsigned short mAttrChange;
+
+  void AssignMutationEventData(const InternalMutationEvent& aEvent,
+                               bool aCopyTargets) {
+    AssignEventData(aEvent, aCopyTargets);
+
+    mRelatedNode = aEvent.mRelatedNode;
+    mAttrName = aEvent.mAttrName;
+    mPrevAttrValue = aEvent.mPrevAttrValue;
+    mNewAttrValue = aEvent.mNewAttrValue;
+    mAttrChange = aEvent.mAttrChange;
+  }
+};
+
+// Bits are actually checked to optimize mutation event firing.
+// That's why I don't number from 0x00.  The first event should
+// always be 0x01.
+#define NS_EVENT_BITS_MUTATION_SUBTREEMODIFIED 0x01
+#define NS_EVENT_BITS_MUTATION_NODEINSERTED 0x02
+#define NS_EVENT_BITS_MUTATION_NODEREMOVED 0x04
+#define NS_EVENT_BITS_MUTATION_NODEREMOVEDFROMDOCUMENT 0x08
+#define NS_EVENT_BITS_MUTATION_NODEINSERTEDINTODOCUMENT 0x10
+#define NS_EVENT_BITS_MUTATION_ATTRMODIFIED 0x20
+#define NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED 0x40
+
+}  // namespace mozilla
+
+#endif  // mozilla_MutationEvent_h__