1 files changed, 112 insertions, 0 deletions
diff --git a/dom/events/EventListenerService.h b/dom/events/EventListenerService.h
new file mode 100644
index 000000000..7c478fd01
--- /dev/null
+++ b/dom/events/EventListenerService.h
@@ -0,0 +1,112 @@
+/* -*- 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_EventListenerService_h_
+#define mozilla_EventListenerService_h_
+
+#include "jsapi.h"
+#include "mozilla/Attributes.h"
+#include "nsAutoPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsIDOMEventListener.h"
+#include "nsIEventListenerService.h"
+#include "nsString.h"
+#include "nsTObserverArray.h"
+#include "nsDataHashtable.h"
+#include "nsGkAtoms.h"
+
+class nsIMutableArray;
+
+namespace mozilla {
+namespace dom {
+class EventTarget;
+} // namespace dom
+
+template<typename T>
+class Maybe;
+
+class EventListenerChange final : public nsIEventListenerChange
+{
+public:
+  explicit EventListenerChange(dom::EventTarget* aTarget);
+
+  void AddChangedListenerName(nsIAtom* aEventName);
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIEVENTLISTENERCHANGE
+
+protected:
+  virtual ~EventListenerChange();
+  nsCOMPtr<dom::EventTarget> mTarget;
+  nsCOMPtr<nsIMutableArray> mChangedListenerNames;
+
+};
+
+class EventListenerInfo final : public nsIEventListenerInfo
+{
+public:
+  EventListenerInfo(const nsAString& aType,
+                    already_AddRefed<nsIDOMEventListener> aListener,
+                    bool aCapturing,
+                    bool aAllowsUntrusted,
+                    bool aInSystemEventGroup)
+    : mType(aType)
+    , mListener(aListener)
+    , mCapturing(aCapturing)
+    , mAllowsUntrusted(aAllowsUntrusted)
+    , mInSystemEventGroup(aInSystemEventGroup)
+  {
+  }
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS(EventListenerInfo)
+  NS_DECL_NSIEVENTLISTENERINFO
+
+protected:
+  virtual ~EventListenerInfo() {}
+
+  bool GetJSVal(JSContext* aCx,
+                Maybe<JSAutoCompartment>& aAc,
+                JS::MutableHandle<JS::Value> aJSVal);
+
+  nsString mType;
+  // nsReftPtr because that is what nsListenerStruct uses too.
+  RefPtr<nsIDOMEventListener> mListener;
+  bool mCapturing;
+  bool mAllowsUntrusted;
+  bool mInSystemEventGroup;
+};
+
+class EventListenerService final : public nsIEventListenerService
+{
+  ~EventListenerService();
+public:
+  EventListenerService();
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIEVENTLISTENERSERVICE
+
+  static void NotifyAboutMainThreadListenerChange(dom::EventTarget* aTarget,
+                                                  nsIAtom* aName)
+  {
+    if (sInstance) {
+      sInstance->NotifyAboutMainThreadListenerChangeInternal(aTarget, aName);
+    }
+  }
+
+  void NotifyPendingChanges();
+private:
+  void NotifyAboutMainThreadListenerChangeInternal(dom::EventTarget* aTarget,
+                                                   nsIAtom* aName);
+  nsTObserverArray<nsCOMPtr<nsIListenerChangeListener>> mChangeListeners;
+  nsCOMPtr<nsIMutableArray> mPendingListenerChanges;
+  nsDataHashtable<nsISupportsHashKey, RefPtr<EventListenerChange>> mPendingListenerChangesSet;
+
+  static EventListenerService* sInstance;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_EventListenerService_h_