1 files changed, 57 insertions, 0 deletions
diff --git a/dom/html/nsBrowserElement.h b/dom/html/nsBrowserElement.h
new file mode 100644
index 0000000000..c81529de33
--- /dev/null
+++ b/dom/html/nsBrowserElement.h
@@ -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/. */
+
+#ifndef nsBrowserElement_h
+#define nsBrowserElement_h
+
+#include "mozilla/dom/BindingDeclarations.h"
+
+#include "nsCOMPtr.h"
+#include "nsIBrowserElementAPI.h"
+
+class nsFrameLoader;
+
+namespace mozilla {
+
+namespace dom {
+class Promise;
+}  // namespace dom
+
+class ErrorResult;
+
+/**
+ * A helper class for browser-element frames
+ */
+class nsBrowserElement {
+ public:
+  nsBrowserElement() = default;
+  virtual ~nsBrowserElement() = default;
+
+  void SendMouseEvent(const nsAString& aType, uint32_t aX, uint32_t aY,
+                      uint32_t aButton, uint32_t aClickCount,
+                      uint32_t aModifiers, ErrorResult& aRv);
+  void GoBack(ErrorResult& aRv);
+  void GoForward(ErrorResult& aRv);
+  void Reload(bool aHardReload, ErrorResult& aRv);
+  void Stop(ErrorResult& aRv);
+
+  already_AddRefed<dom::Promise> GetCanGoBack(ErrorResult& aRv);
+  already_AddRefed<dom::Promise> GetCanGoForward(ErrorResult& aRv);
+
+ protected:
+  virtual already_AddRefed<nsFrameLoader> GetFrameLoader() = 0;
+
+  void InitBrowserElementAPI();
+  void DestroyBrowserElementFrameScripts();
+  nsCOMPtr<nsIBrowserElementAPI> mBrowserElementAPI;
+
+ private:
+  bool IsBrowserElementOrThrow(ErrorResult& aRv);
+};
+
+}  // namespace mozilla
+
+#endif  // nsBrowserElement_h