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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_THEME_HELPER_H_
#define CONTENT_BROWSER_THEME_HELPER_H_
#include "base/no_destructor.h"
#include "base/scoped_observation.h"
#include "content/common/renderer.mojom-forward.h"
#include "ui/native_theme/native_theme.h"
#include "ui/native_theme/native_theme_observer.h"
namespace content {
// This class is used to monitor system color info changes and to notify the
// renderer processes.
class ThemeHelper : public ui::NativeThemeObserver {
public:
static ThemeHelper* GetInstance();
ThemeHelper(const ThemeHelper&) = delete;
ThemeHelper& operator=(const ThemeHelper&) = delete;
void SendSystemColorInfo(mojom::Renderer* renderer) const;
private:
friend class base::NoDestructor<ThemeHelper>;
ThemeHelper();
~ThemeHelper() override;
// Overridden from ui::NativeThemeObserver:
void OnNativeThemeUpdated(ui::NativeTheme* updated_theme) override;
base::ScopedObservation<ui::NativeTheme, ui::NativeThemeObserver>
theme_observation_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_THEME_HELPER_H_
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