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// Copyright 2017 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_ANDROID_VIEW_ANDROID_OBSERVER_H_
#define UI_ANDROID_VIEW_ANDROID_OBSERVER_H_
#include "ui/android/ui_android_export.h"
namespace ui {
class UI_ANDROID_EXPORT ViewAndroidObserver {
public:
// Notifies that view gets attached to window. Note that the notification
// is not sent if view is already in attached state.
virtual void OnAttachedToWindow() = 0;
// Notifies that view gets detached from window. Note that the notification
// is not sent if view is already in detached state.
virtual void OnDetachedFromWindow() = 0;
protected:
virtual ~ViewAndroidObserver() {}
};
} // namespace ui
#endif // UI_ANDROID_VIEW_ANDROID_OBSERVER_H_
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