electron/atom/browser/native_window_observer.h

// Copyright (c) 2013 GitHub, Inc. All rights reserved.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#ifndef ATOM_BROWSER_NATIVE_WINDOW_OBSERVER_H_
#define ATOM_BROWSER_NATIVE_WINDOW_OBSERVER_H_

#include <string>

namespace atom {

class NativeWindowObserver {
 public:
  virtual ~NativeWindowObserver() {}

  // Called when the web page of the window has updated it's document title.
  virtual void OnPageTitleUpdated(bool* prevent_default,
                                  const std::string& title) {}

  // Called when the window is gonna closed.
  virtual void WillCloseWindow(bool* prevent_default) {}

  // Called when the window is closed.
  virtual void OnWindowClosed() {}

  // Called when window loses focus.
  virtual void OnWindowBlur() {}

  // Called when window gains focus.
  virtual void OnWindowFocus() {}

  // Called when renderer is hung.
  virtual void OnRendererUnresponsive() {}

  // Called when renderer recovers.
  virtual void OnRendererResponsive() {}
};

}  // namespace atom

#endif  // ATOM_BROWSER_NATIVE_WINDOW_OBSERVER_H_