1 files changed, 59 insertions, 0 deletions
diff --git a/dom/debugger/DebuggerNotificationManager.cpp b/dom/debugger/DebuggerNotificationManager.cpp
new file mode 100644
index 0000000000..773fdc0c5a
--- /dev/null
+++ b/dom/debugger/DebuggerNotificationManager.cpp
@@ -0,0 +1,59 @@
+/* -*- 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 "DebuggerNotificationManager.h"
+
+#include "nsIGlobalObject.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION(DebuggerNotificationManager, mDebuggeeGlobal,
+                         mNotificationObservers)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DebuggerNotificationManager)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DebuggerNotificationManager)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DebuggerNotificationManager)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(DebuggerNotificationManager)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+bool DebuggerNotificationManager::Attach(
+    DebuggerNotificationObserver* aObserver) {
+  RefPtr<DebuggerNotificationObserver> ptr(aObserver);
+
+  if (mNotificationObservers.Contains(ptr)) {
+    return false;
+  }
+
+  mNotificationObservers.AppendElement(ptr);
+  return true;
+}
+bool DebuggerNotificationManager::Detach(
+    DebuggerNotificationObserver* aObserver) {
+  RefPtr<DebuggerNotificationObserver> ptr(aObserver);
+
+  return mNotificationObservers.RemoveElement(ptr);
+}
+
+bool DebuggerNotificationManager::HasListeners() {
+  const auto [begin, end] = mNotificationObservers.NonObservingRange();
+  return std::any_of(begin, end, [](const auto& observer) {
+    return observer->HasListeners();
+  });
+}
+
+void DebuggerNotificationManager::NotifyListeners(
+    DebuggerNotification* aNotification) {
+  for (RefPtr<DebuggerNotificationObserver> observer :
+       mNotificationObservers.ForwardRange()) {
+    observer->NotifyListeners(aNotification);
+  }
+}
+
+}  // namespace mozilla::dom