1 files changed, 57 insertions, 0 deletions
diff --git a/dom/html/nsBrowserElement.cpp b/dom/html/nsBrowserElement.cpp
new file mode 100644
index 0000000000..69284e77ab
--- /dev/null
+++ b/dom/html/nsBrowserElement.cpp
@@ -0,0 +1,57 @@
+/* -*- 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 "nsBrowserElement.h"
+
+#include "mozilla/Preferences.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/ToJSValue.h"
+
+#include "nsComponentManagerUtils.h"
+#include "nsFrameLoader.h"
+#include "nsINode.h"
+
+#include "js/Wrapper.h"
+
+using namespace mozilla::dom;
+
+namespace mozilla {
+
+bool nsBrowserElement::IsBrowserElementOrThrow(ErrorResult& aRv) {
+  if (mBrowserElementAPI) {
+    return true;
+  }
+  aRv.Throw(NS_ERROR_DOM_INVALID_NODE_TYPE_ERR);
+  return false;
+}
+
+void nsBrowserElement::InitBrowserElementAPI() {
+  RefPtr<nsFrameLoader> frameLoader = GetFrameLoader();
+  NS_ENSURE_TRUE_VOID(frameLoader);
+
+  if (!frameLoader->OwnerIsMozBrowserFrame()) {
+    return;
+  }
+
+  if (!mBrowserElementAPI) {
+    mBrowserElementAPI =
+        do_CreateInstance("@mozilla.org/dom/browser-element-api;1");
+    if (NS_WARN_IF(!mBrowserElementAPI)) {
+      return;
+    }
+  }
+  mBrowserElementAPI->SetFrameLoader(frameLoader);
+}
+
+void nsBrowserElement::DestroyBrowserElementFrameScripts() {
+  if (!mBrowserElementAPI) {
+    return;
+  }
+  mBrowserElementAPI->DestroyFrameScripts();
+}
+
+}  // namespace mozilla