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// Copyright (c) 2012 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.
#include "ui/aura/aura_export.h"
namespace aura {
class Window;
class WindowTreeHost;
namespace client {
class FocusClient;
class AURA_EXPORT EnvObserver {
// Called when |window| has been initialized.
virtual void OnWindowInitialized(Window* window) = 0;
// Called when a WindowTreeHost is initialized.
virtual void OnHostInitialized(WindowTreeHost* host) {}
// Called when a WindowTreeHost is activated.
virtual void OnHostActivated(WindowTreeHost* host) {}
// Called right before Env is destroyed.
virtual void OnWillDestroyEnv() {}
// Called from Env::SetActiveFocusClient(), see it for details.
virtual void OnActiveFocusClientChanged(client::FocusClient* focus_client,
Window* window) {}
virtual ~EnvObserver() {}
} // namespace aura