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// Copyright 2018 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_VIEWS_WIDGET_WIDGET_UTILS_H_
#define UI_VIEWS_WIDGET_WIDGET_UTILS_H_
#include "base/callback.h"
#include "base/scoped_observer.h"
#include "base/time/time.h"
#include "base/timer/elapsed_timer.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/views_export.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
namespace views {
class Widget;
class VIEWS_EXPORT WidgetOpenTimer : public WidgetObserver {
public:
using Callback = base::RepeatingCallback<void(base::TimeDelta)>;
explicit WidgetOpenTimer(Callback callback);
WidgetOpenTimer(const WidgetOpenTimer&) = delete;
const WidgetOpenTimer& operator=(const WidgetOpenTimer&) = delete;
~WidgetOpenTimer() override;
// WidgetObserver:
void OnWidgetDestroying(Widget* widget) override;
// Called to start the |open_timer_|.
void Reset(Widget* widget);
private:
// Callback run when the passed in Widget is destroyed.
Callback callback_;
// Time the bubble has been open. Used for UMA metrics collection.
base::Optional<base::ElapsedTimer> open_timer_;
ScopedObserver<Widget, WidgetObserver> observed_widget_{this};
};
// Returns the root window for |widget|. On non-Aura, this is equivalent to
// widget->GetNativeWindow().
VIEWS_EXPORT gfx::NativeWindow GetRootWindow(const Widget* widget);
} // namespace views
#endif // UI_VIEWS_WIDGET_WIDGET_UTILS_H_
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