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ash / public / cpp / style / dark_light_mode_controller.h [blame]
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_PUBLIC_CPP_STYLE_DARK_LIGHT_MODE_CONTROLLER_H_
#define ASH_PUBLIC_CPP_STYLE_DARK_LIGHT_MODE_CONTROLLER_H_
#include "ash/public/cpp/ash_public_export.h"
namespace ash {
class ColorModeObserver;
// An interface implemented by Ash that controls the behavior of dark/light
// mode. See DarkLightModeControllerImpl for more details.
class ASH_PUBLIC_EXPORT DarkLightModeController {
public:
static DarkLightModeController* Get();
virtual void AddObserver(ColorModeObserver* observer) = 0;
virtual void RemoveObserver(ColorModeObserver* observer) = 0;
// True if the current color mode is DARK. By default, color mode is AUTO when
// #DarkLightMode feature is enabled, which means LIGHT after sunrise and
// before sunset, DARK otherwise. And the default color mode will be DARK
// when the #DarkLightMode feature is disabled, as most of the SysUI surfaces
// are dark without dark/light enabled. But it can be overridden by
// ScopedLightModeAsDefault if the surface wants to keep as LIGHT in the case.
// See `override_light_mode_as_default_` for more details.
virtual bool IsDarkModeEnabled() const = 0;
// Enables or disables dark mode for testing. Only works when the
// DarkLightMode feature is enabled.
virtual void SetDarkModeEnabledForTest(bool enabled) = 0;
protected:
DarkLightModeController();
virtual ~DarkLightModeController();
};
} // namespace ash
#endif // ASH_PUBLIC_CPP_STYLE_DARK_LIGHT_MODE_CONTROLLER_H_