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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.
#ifndef UI_AURA_ENV_OBSERVER_H_
#define UI_AURA_ENV_OBSERVER_H_
#include "ui/aura/aura_export.h"
namespace aura {
class Window;
class WindowTreeHost;
class AURA_EXPORT EnvObserver {
public:
// Called when |window| has been initialized.
virtual void OnWindowInitialized(Window* window) {}
// Called when a WindowTreeHost is initialized.
virtual void OnHostInitialized(WindowTreeHost* host) {}
// Called right before Env is destroyed.
virtual void OnWillDestroyEnv() {}
// Called when occlusion tracker pauses/resumes. This is only called in
// Mode::LOCAL.
virtual void OnWindowOcclusionTrackingPaused() {}
virtual void OnWindowOcclusionTrackingResumed() {}
protected:
virtual ~EnvObserver() {}
};
} // namespace aura
#endif // UI_AURA_ENV_OBSERVER_H_
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