1 files changed, 79 insertions, 0 deletions
diff --git a/dom/performance/EventCounts.cpp b/dom/performance/EventCounts.cpp
new file mode 100644
index 0000000000..b94545e913
--- /dev/null
+++ b/dom/performance/EventCounts.cpp
@@ -0,0 +1,79 @@
+/* -*- 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 "nsIGlobalObject.h"
+#include "EventCounts.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/EventCounts.h"
+#include "mozilla/dom/PerformanceEventTimingBinding.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(EventCounts, mParent)
+
+static const EventMessage sQualifiedEventType[36] = {
+    EventMessage::eMouseAuxClick,
+    EventMessage::eMouseClick,
+    EventMessage::eContextMenu,
+    EventMessage::eMouseDoubleClick,
+    EventMessage::eMouseDown,
+    EventMessage::eMouseEnter,
+    EventMessage::eMouseLeave,
+    EventMessage::eMouseOut,
+    EventMessage::eMouseOver,
+    EventMessage::eMouseUp,
+    EventMessage::ePointerOver,
+    EventMessage::ePointerEnter,
+    EventMessage::ePointerDown,
+    EventMessage::ePointerUp,
+    EventMessage::ePointerCancel,
+    EventMessage::ePointerOut,
+    EventMessage::ePointerLeave,
+    EventMessage::ePointerGotCapture,
+    EventMessage::ePointerLostCapture,
+    EventMessage::eTouchStart,
+    EventMessage::eTouchEnd,
+    EventMessage::eTouchCancel,
+    EventMessage::eKeyDown,
+    EventMessage::eKeyPress,
+    EventMessage::eKeyUp,
+    EventMessage::eEditorBeforeInput,
+    EventMessage::eEditorInput,
+    EventMessage::eCompositionStart,
+    EventMessage::eCompositionUpdate,
+    EventMessage::eCompositionEnd,
+    EventMessage::eDragStart,
+    EventMessage::eDragEnd,
+    EventMessage::eDragEnter,
+    EventMessage::eDragLeave,
+    EventMessage::eDragOver,
+    EventMessage::eDrop};
+
+EventCounts::EventCounts(nsISupports* aParent) : mParent(aParent) {
+  ErrorResult rv;
+
+  for (const EventMessage& eventType : sQualifiedEventType) {
+    EventCounts_Binding::MaplikeHelpers::Set(
+        this, nsDependentString(Event::GetEventName(eventType)), 0, rv);
+    if (NS_WARN_IF(rv.Failed())) {
+      rv.SuppressException();
+#ifdef DEBUG
+      nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
+      if (global) {
+        MOZ_ASSERT(global->IsDying());
+      }
+#endif
+      return;
+    }
+  }
+}
+
+JSObject* EventCounts::WrapObject(JSContext* aCx,
+                                  JS::Handle<JSObject*> aGivenProto) {
+  return EventCounts_Binding::Wrap(aCx, this, aGivenProto);
+}
+}  // namespace mozilla::dom