ui/aura/mus/window_tree_client_observer.h

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_AURA_MUS_WINDOW_TREE_CLIENT_OBSERVER_H_
#define UI_AURA_MUS_WINDOW_TREE_CLIENT_OBSERVER_H_

#include "services/ws/public/mojom/window_tree_constants.mojom.h"
#include "ui/aura/aura_export.h"

namespace aura {

class Window;
class WindowTreeClient;

class AURA_EXPORT WindowTreeClientObserver {
 public:
  // Called early on in the destructor of WindowTreeClient.
  virtual void OnWillDestroyClient(WindowTreeClient* client) {}

  // Called when a WindowMove started on |window| from |source| event.
  virtual void OnWindowMoveStarted(Window* window,
                                   const gfx::Point& cursor_location,
                                   ws::mojom::MoveLoopSource source) {}

  // Called when the WindowMove ended.
  virtual void OnWindowMoveEnded(bool success) {}

 protected:
  virtual ~WindowTreeClientObserver() {}
};

}  // namespace aura

#endif  // UI_AURA_MUS_WINDOW_TREE_CLIENT_OBSERVER_H_