1 files changed, 61 insertions, 0 deletions
diff --git a/hal/WindowIdentifier.cpp b/hal/WindowIdentifier.cpp
new file mode 100644
index 0000000000..dc10801691
--- /dev/null
+++ b/hal/WindowIdentifier.cpp
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et ft=cpp : */
+/* 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 "WindowIdentifier.h"
+
+#include "mozilla/dom/ContentChild.h"
+#include "nsPIDOMWindow.h"
+
+namespace mozilla {
+namespace hal {
+
+WindowIdentifier::WindowIdentifier()
+    : mWindow(nullptr)
+#ifdef DEBUG
+      ,
+      mIsEmpty(true)
+#endif
+{
+}
+
+WindowIdentifier::WindowIdentifier(nsPIDOMWindowInner* window)
+    : mWindow(window) {
+  mID.AppendElement(GetWindowID());
+}
+
+WindowIdentifier::WindowIdentifier(nsTArray<uint64_t>&& id,
+                                   nsPIDOMWindowInner* window)
+    : mID(std::move(id)), mWindow(window) {
+  mID.AppendElement(GetWindowID());
+}
+
+const nsTArray<uint64_t>& WindowIdentifier::AsArray() const {
+  MOZ_ASSERT(!mIsEmpty);
+  return mID;
+}
+
+bool WindowIdentifier::HasTraveledThroughIPC() const {
+  MOZ_ASSERT(!mIsEmpty);
+  return mID.Length() >= 2;
+}
+
+void WindowIdentifier::AppendProcessID() {
+  MOZ_ASSERT(!mIsEmpty);
+  mID.AppendElement(dom::ContentChild::GetSingleton()->GetID());
+}
+
+uint64_t WindowIdentifier::GetWindowID() const {
+  MOZ_ASSERT(!mIsEmpty);
+  return mWindow ? mWindow->WindowID() : UINT64_MAX;
+}
+
+nsPIDOMWindowInner* WindowIdentifier::GetWindow() const {
+  MOZ_ASSERT(!mIsEmpty);
+  return mWindow;
+}
+
+}  // namespace hal
+}  // namespace mozilla