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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_DARK_MODE_MANAGER_LINUX_H_
#define CHROME_BROWSER_UI_VIEWS_DARK_MODE_MANAGER_LINUX_H_
#include <string>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "ui/native_theme/native_theme.h"
#include "ui/native_theme/native_theme_observer.h"
namespace dbus {
class Bus;
class ErrorResponse;
class MessageReader;
class ObjectProxy;
class Response;
class Signal;
} // namespace dbus
namespace ui {
class LinuxUiTheme;
class DarkModeManagerLinuxTest;
// Observes the system color scheme preference using
// org.freedesktop.portal.Settings. Falls back to the toolkit preference if
// org.freedesktop.portal.Settings is unavailable. Propagates the dark mode
// preference to the web theme.
class DarkModeManagerLinux : public NativeThemeObserver {
public:
DarkModeManagerLinux();
DarkModeManagerLinux(
scoped_refptr<dbus::Bus> bus,
LinuxUiTheme* default_linux_ui_theme,
const std::vector<raw_ptr<LinuxUiTheme, VectorExperimental>>*
linux_ui_themes,
std::vector<raw_ptr<NativeTheme, VectorExperimental>> native_themes);
DarkModeManagerLinux(const DarkModeManagerLinux&) = delete;
DarkModeManagerLinux& operator=(const DarkModeManagerLinux&) = delete;
~DarkModeManagerLinux() override;
bool prefer_dark_theme() const { return prefer_dark_theme_; }
private:
friend class DarkModeManagerLinuxTest;
FRIEND_TEST_ALL_PREFIXES(DarkModeManagerLinuxTest, UseNativeThemeSetting);
FRIEND_TEST_ALL_PREFIXES(DarkModeManagerLinuxTest, UsePortalSetting);
FRIEND_TEST_ALL_PREFIXES(DarkModeManagerLinuxTest, UsePortalAccentColor);
constexpr static char kFreedesktopSettingsService[] =
"org.freedesktop.portal.Desktop";
constexpr static char kFreedesktopSettingsObjectPath[] =
"/org/freedesktop/portal/desktop";
constexpr static char kFreedesktopSettingsInterface[] =
"org.freedesktop.portal.Settings";
constexpr static char kSettingChangedSignal[] = "SettingChanged";
constexpr static char kReadMethod[] = "Read";
constexpr static char kSettingsNamespace[] = "org.freedesktop.appearance";
constexpr static char kColorSchemeKey[] = "color-scheme";
constexpr static char kAccentColorKey[] = "accent-color";
constexpr static int kFreedesktopColorSchemeDark = 1;
// ui::NativeThemeObserver:
void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;
// D-Bus async handlers
void OnSignalConnected(const std::string& interface_name,
const std::string& signal_name,
bool connected);
void OnPortalSettingChanged(dbus::Signal* signal);
void OnReadColorSchemeResponse(dbus::Response* response);
void OnReadAccentColorResponse(dbus::Response* response);
void OnReadError(dbus::ErrorResponse* error);
// Sets `prefer_dark_theme_` and propagates to the web theme.
void SetColorScheme(bool prefer_dark_theme, bool from_toolkit_theme);
void SetAccentColor(dbus::MessageReader* reader);
raw_ptr<const std::vector<raw_ptr<LinuxUiTheme, VectorExperimental>>>
linux_ui_themes_;
std::vector<raw_ptr<NativeTheme, VectorExperimental>> native_themes_;
scoped_refptr<dbus::Bus> bus_;
raw_ptr<dbus::ObjectProxy> settings_proxy_;
bool prefer_dark_theme_ = false;
bool ignore_toolkit_theme_changes_ = false;
base::ScopedObservation<NativeTheme, NativeThemeObserver>
native_theme_observer_{this};
base::WeakPtrFactory<DarkModeManagerLinux> weak_ptr_factory_{this};
};
} // namespace ui
#endif // CHROME_BROWSER_UI_VIEWS_DARK_MODE_MANAGER_LINUX_H_
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