1 files changed, 50 insertions, 0 deletions
diff --git a/dom/base/MessageBroadcaster.h b/dom/base/MessageBroadcaster.h
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+++ b/dom/base/MessageBroadcaster.h
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+/* -*- 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_dom_MessageBroadcaster_h
+#define mozilla_dom_MessageBroadcaster_h
+
+#include "mozilla/dom/MessageListenerManager.h"
+#include "nsContentUtils.h"
+
+namespace mozilla::dom {
+
+/**
+ * Implementation for the WebIDL MessageBroadcaster interface. Base class for
+ * window and process broadcaster message managers.
+ */
+class MessageBroadcaster : public MessageListenerManager {
+ public:
+  static MessageBroadcaster* From(MessageListenerManager* aManager) {
+    if (aManager->IsBroadcaster()) {
+      return static_cast<MessageBroadcaster*>(aManager);
+    }
+    return nullptr;
+  }
+
+  void BroadcastAsyncMessage(JSContext* aCx, const nsAString& aMessageName,
+                             JS::Handle<JS::Value> aObj,
+                             mozilla::ErrorResult& aError) {
+    DispatchAsyncMessage(aCx, aMessageName, aObj, JS::UndefinedHandleValue,
+                         aError);
+  }
+  uint32_t ChildCount() { return mChildManagers.Length(); }
+  MessageListenerManager* GetChildAt(uint32_t aIndex) {
+    return mChildManagers.SafeElementAt(aIndex);
+  }
+  void ReleaseCachedProcesses();
+
+  void AddChildManager(MessageListenerManager* aManager);
+  void RemoveChildManager(MessageListenerManager* aManager);
+
+ protected:
+  MessageBroadcaster(MessageBroadcaster* aParentManager,
+                     MessageManagerFlags aFlags);
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_MessageBroadcaster_h