// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ash/accessibility/accessibility_manager.h"

#include <stddef.h>
#include <stdint.h>

#include <algorithm>
#include <string_view>
#include <utility>

#include "ash/accessibility/accessibility_controller.h"
#include "ash/accessibility/autoclick/autoclick_controller.h"
#include "ash/accessibility/sticky_keys/sticky_keys_controller.h"
#include "ash/color_enhancement/color_enhancement_controller.h"
#include "ash/constants/ash_constants.h"
#include "ash/constants/ash_pref_names.h"
#include "ash/constants/ash_switches.h"
#include "ash/public/cpp/accelerators.h"
#include "ash/public/cpp/accessibility_controller_enums.h"
#include "ash/public/cpp/accessibility_focus_ring_controller.h"
#include "ash/public/cpp/accessibility_focus_ring_info.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/webui/settings/public/constants/routes_util.h"
#include "base/command_line.h"
#include "base/containers/flat_map.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/location.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/singleton.h"
#include "base/metrics/histogram_functions.h"
#include "base/notimplemented.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_blocking_call.h"
#include "base/types/cxx23_to_underlying.h"
#include "base/values.h"
#include "chrome/browser/accessibility/accessibility_extension_api_ash.h"
#include "chrome/browser/ash/accessibility/accessibility_dlc_installer.h"
#include "chrome/browser/ash/accessibility/accessibility_extension_loader.h"
#include "chrome/browser/ash/accessibility/dictation.h"
#include "chrome/browser/ash/accessibility/magnification_manager.h"
#include "chrome/browser/ash/accessibility/select_to_speak_event_handler_delegate_impl.h"
#include "chrome/browser/ash/accessibility/service/accessibility_service_client.h"
#include "chrome/browser/ash/policy/enrollment/enrollment_requisition_manager.h"
#include "chrome/browser/ash/profiles/profile_helper.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/api/braille_display_private/stub_braille_controller.h"
#include "chrome/browser/extensions/component_loader.h"
#include "chrome/browser/lifetime/termination_notification.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/keyboard/chrome_keyboard_controller_client.h"
#include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
#include "chrome/browser/ui/settings_window_manager_chromeos.h"
#include "chrome/browser/ui/singleton_tabs.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/extensions/api/accessibility_private.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "chrome/grit/browser_resources.h"
#include "chrome/grit/generated_resources.h"
#include "chromeos/ash/components/audio/public/cpp/sounds/sounds_manager.h"
#include "chromeos/ash/components/audio/sounds.h"
#include "chromeos/ash/components/browser_context_helper/browser_context_helper.h"
#include "chromeos/ash/components/browser_context_helper/browser_context_types.h"
#include "chromeos/ash/components/dbus/upstart/upstart_client.h"
#include "chromeos/ash/components/language_packs/language_pack_manager.h"
#include "chromeos/constants/devicetype.h"
#include "chromeos/dbus/power/power_manager_client.h"
#include "components/language/core/browser/pref_names.h"
#include "components/live_caption/pref_names.h"
#include "components/prefs/pref_member.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/soda/soda_installer.h"
#include "components/user_manager/known_user.h"
#include "content/public/browser/browser_accessibility_state.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/focused_node_details.h"
#include "content/public/browser/media_session_service.h"
#include "content/public/browser/web_ui.h"
#include "content/public/common/content_switches.h"
#include "extensions/browser/api/virtual_keyboard_private/virtual_keyboard_delegate.h"
#include "extensions/browser/api/virtual_keyboard_private/virtual_keyboard_private_api.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_resource.h"
#include "media/base/audio_codecs.h"
#include "services/accessibility/buildflags.h"
#include "ui/accessibility/accessibility_features.h"
#include "ui/accessibility/accessibility_switches.h"
#include "ui/accessibility/ax_enum_util.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/base/ime/ash/extension_ime_util.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/events/ash/keyboard_capability.h"
#include "ui/events/devices/device_data_manager.h"
#include "ui/events/devices/input_device_event_observer.h"
#include "ui/events/keycodes/keyboard_codes_posix.h"
#include "ui/gfx/animation/animation.h"
#include "ui/native_theme/features/native_theme_features.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
#include "url/gurl.h"

namespace ash {

namespace {

using ::extensions::api::accessibility_private::DlcType;
using ::extensions::api::accessibility_private::FaceGazeAssets;
using ::extensions::api::accessibility_private::PumpkinData;
using ::extensions::api::accessibility_private::TtsVariant;
using ::extensions::api::braille_display_private::BrailleController;
using ::extensions::api::braille_display_private::DisplayState;
using ::extensions::api::braille_display_private::KeyEvent;
using ::extensions::api::braille_display_private::StubBrailleController;

// When this flag is set, system sounds will not be played.
constexpr char kAshDisableSystemSounds[] = "ash-disable-system-sounds";

// A key for the spoken feedback enabled boolean state for a known user.
const char kUserSpokenFeedbackEnabled[] = "UserSpokenFeedbackEnabled";

// A key for the startup sound enabled boolean state for a known user.
const char kUserStartupSoundEnabled[] = "UserStartupSoundEnabled";

// A key for the bluetooth braille display for a user.
const char kUserBluetoothBrailleDisplayAddress[] =
    "UserBluetoothBrailleDisplayAddress";

// The name of the Brltty upstart job.
constexpr char kBrlttyUpstartJobName[] = "brltty";

// The file name of a lite TTS voice.
const char kTtsLiteFileName[] = "voice.zvoice";

// The file name of a standard TTS voice.
const char kTtsStandardFileName[] = "voice-standard.zvoice";

// The value representing the FaceGaze left click action. See
// ash/webui/common/resources/accessibility/macro_names.ts for the full list of
// FaceGaze actions. This value needs to be in sync with the MOUSE_CLICK_LEFT
// action in the above file.
constexpr int kFaceGazeLeftClickValue = 35;

// The value representing the FaceGaze scroll action. See
// ash/webui/common/resources/accessibility/macro_names.ts for the full list of
// FaceGaze actions. This value needs to be in sync with the TOGGLE_SCROLL_MODE
// action in the above file.
constexpr int kFaceGazeScrollValue = 50;

// The string representing the FaceGaze jaw open gesture. See
// ash/webui/common/resources/accessibility/facial_gestures.ts for the full list
// of FaceGaze gestures. This value needs to be in sync with the JAW_OPEN
// gesture in the above file.
constexpr char kFaceGazeJawOpenGesture[] = "jawOpen";

// The string representing the FaceGaze mouth smile gesture. See
// ash/webui/common/resources/accessibility/facial_gestures.ts for the full list
// of FaceGaze gestures. This value needs to be in sync with the MOUTH_SMILE
// gesture in the above file.
constexpr char kFaceGazeMouthSmileGesture[] = "mouthSmile";

static AccessibilityManager* g_accessibility_manager = nullptr;

static BrailleController* g_braille_controller_for_test = nullptr;

BrailleController* GetBrailleController() {
  if (g_braille_controller_for_test)
    return g_braille_controller_for_test;
  // Don't use the real braille controller for tests to avoid automatically
  // starting ChromeVox which confuses some tests.
  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  if (command_line->HasSwitch(::switches::kTestType))
    return StubBrailleController::GetInstance();
  return BrailleController::GetInstance();
}

// Restarts (stops, then starts brltty). If |address| is empty, only stops.
// In Upstart, sending an explicit restart command is a no-op if the job isn't
// already started. Without knowledge regarding brltty's current job status,
// stop followed by start ensures we both stop a started job, and also start
// brltty.
void RestartBrltty(const std::string& address) {
  UpstartClient* client = UpstartClient::Get();
  client->StopJob(kBrlttyUpstartJobName, {}, base::DoNothing());

  std::vector<std::string> args;
  if (address.empty())
    return;

  args.push_back(base::StringPrintf("ADDRESS=%s", address.c_str()));
  client->StartJob(kBrlttyUpstartJobName, args, base::DoNothing());
}

bool VolumeAdjustSoundEnabled() {
  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
      switches::kDisableVolumeAdjustSound);
}

std::string AccessibilityPrivateEnumForAction(SelectToSpeakPanelAction action) {
  switch (action) {
    case SelectToSpeakPanelAction::kPreviousSentence:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kPreviousSentence);
    case SelectToSpeakPanelAction::kPreviousParagraph:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kPreviousParagraph);
    case SelectToSpeakPanelAction::kPause:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kPause);
    case SelectToSpeakPanelAction::kResume:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kResume);
    case SelectToSpeakPanelAction::kNextSentence:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kNextSentence);
    case SelectToSpeakPanelAction::kNextParagraph:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kNextParagraph);
    case SelectToSpeakPanelAction::kChangeSpeed:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kChangeSpeed);
    case SelectToSpeakPanelAction::kExit:
      return extensions::api::accessibility_private::ToString(
          extensions::api::accessibility_private::SelectToSpeakPanelAction::
              kExit);
    case SelectToSpeakPanelAction::kNone:
      NOTREACHED();
  }
}

std::optional<bool> GetDictationOfflineNudgePrefForLocale(
    Profile* profile,
    const std::string& dictation_locale) {
  if (dictation_locale.empty()) {
    return std::nullopt;
  }
  const base::Value::Dict& offline_nudges = profile->GetPrefs()->GetDict(
      prefs::kAccessibilityDictationLocaleOfflineNudge);
  return offline_nudges.FindBoolByDottedPath(dictation_locale);
}

// Represents response data returned by `ReadDlcFile`.
struct ReadDlcFileResponse {
  ReadDlcFileResponse(std::vector<uint8_t> contents,
                      std::optional<std::string> error)
      : contents(std::move(contents)), error(std::move(error)) {}
  ~ReadDlcFileResponse() = default;
  ReadDlcFileResponse(const ReadDlcFileResponse&) = default;
  ReadDlcFileResponse& operator=(const ReadDlcFileResponse&) = default;

  // The content of the DLC file.
  std::vector<uint8_t> contents;
  // An error, if any.
  std::optional<std::string> error;
};

// Reads the contents of a DLC file specified by `path`. Must run asynchronously
// on a new ThreadPool.
ReadDlcFileResponse ReadDlcFile(base::FilePath path) {
  DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
                                                base::BlockingType::MAY_BLOCK);

  std::string error;
  if (!base::PathExists(path)) {
    error = "Error: DLC file does not exist on-device: " + path.AsUTF8Unsafe();
    return ReadDlcFileResponse(std::vector<uint8_t>(), error);
  }

  std::optional<uint64_t> file_size = base::GetFileSize(path);
  if (!file_size.has_value() || file_size.value() == 0) {
    error = "Error: failed to read size of file: " + path.AsUTF8Unsafe();
    return ReadDlcFileResponse(std::vector<uint8_t>(), error);
  }

  std::vector<uint8_t> contents(file_size.value());
  std::optional<uint64_t> bytes_read = base::ReadFile(path, contents);
  if (bytes_read != file_size.value()) {
    error = "Error: could not read file: " + path.AsUTF8Unsafe();
    return ReadDlcFileResponse(std::vector<uint8_t>(), error);
  }

  return ReadDlcFileResponse(std::move(contents), std::nullopt);
}

// Runs when `ReadDlcFile` returns the contents of a file.
void OnReadDlcFile(GetTtsDlcContentsCallback callback,
                   ReadDlcFileResponse response) {
  std::move(callback).Run(response.contents, response.error);
}

std::optional<FaceGazeAssets> CreateFaceGazeAssets(base::FilePath base_path) {
  DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
                                                base::BlockingType::MAY_BLOCK);
  FaceGazeAssets assets;
  base::flat_map<std::string, std::vector<uint8_t>*> files_to_data({
      {"face_landmarker.task", &assets.model},
      {"vision_wasm_internal.wasm", &assets.wasm},
  });

  for (const auto& iter : files_to_data) {
    const std::string& file_name = iter.first;
    std::vector<uint8_t>* file_data = iter.second;
    ReadDlcFileResponse response = ReadDlcFile(base_path.Append(file_name));
    if (response.error.has_value()) {
      return std::nullopt;
    }
    *file_data = std::move(response.contents);
  }

  return assets;
}

std::optional<PumpkinData> CreatePumpkinData(base::FilePath base_pumpkin_path) {
  DCHECK(!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
                                                base::BlockingType::MAY_BLOCK);
  PumpkinData data;
  // TODO(https://crbug.com/1258190): Consider making action/pumpkin configs
  // optional.
  base::flat_map<std::string, std::vector<uint8_t>*> files_to_data({
      {"js_pumpkin_tagger_bin.js", &data.js_pumpkin_tagger_bin_js},
      {"tagger_wasm_main.js", &data.tagger_wasm_main_js},
      {"tagger_wasm_main.wasm", &data.tagger_wasm_main_wasm},
      {"en_us/action_config.binarypb", &data.en_us_action_config_binarypb},
      {"en_us/pumpkin_config.binarypb", &data.en_us_pumpkin_config_binarypb},
      {"fr_fr/action_config.binarypb", &data.fr_fr_action_config_binarypb},
      {"fr_fr/pumpkin_config.binarypb", &data.fr_fr_pumpkin_config_binarypb},
      {"it_it/action_config.binarypb", &data.it_it_action_config_binarypb},
      {"it_it/pumpkin_config.binarypb", &data.it_it_pumpkin_config_binarypb},
      {"de_de/action_config.binarypb", &data.de_de_action_config_binarypb},
      {"de_de/pumpkin_config.binarypb", &data.de_de_pumpkin_config_binarypb},
      {"es_es/action_config.binarypb", &data.es_es_action_config_binarypb},
      {"es_es/pumpkin_config.binarypb", &data.es_es_pumpkin_config_binarypb},
  });

  for (const auto& iter : files_to_data) {
    const std::string& file_name = iter.first;
    std::vector<uint8_t>* file_data = iter.second;
    ReadDlcFileResponse response =
        ReadDlcFile(base_pumpkin_path.Append(file_name));
    if (response.error.has_value()) {
      return std::nullopt;
    }
    *file_data = std::move(response.contents);
  }

  return data;
}

}  // namespace

class AccessibilityPanelWidgetObserver : public views::WidgetObserver {
 public:
  AccessibilityPanelWidgetObserver(views::Widget* widget,
                                   base::OnceCallback<void()> on_destroying)
      : widget_(widget), on_destroying_(std::move(on_destroying)) {
    widget_->AddObserver(this);
  }

  AccessibilityPanelWidgetObserver(const AccessibilityPanelWidgetObserver&) =
      delete;
  AccessibilityPanelWidgetObserver& operator=(
      const AccessibilityPanelWidgetObserver&) = delete;

  ~AccessibilityPanelWidgetObserver() override { CHECK(!IsInObserverList()); }

  void OnWidgetClosing(views::Widget* widget) override { Reset(widget); }

  void OnWidgetDestroying(views::Widget* widget) override { Reset(widget); }

  void Reset(views::Widget* widget) {
    CHECK_EQ(widget_, widget);
    widget->RemoveObserver(this);
    std::move(on_destroying_).Run();
    // |this| should be deleted by the above callback.
  }

 private:
  raw_ptr<views::Widget> widget_;

  base::OnceCallback<void()> on_destroying_;
};

///////////////////////////////////////////////////////////////////////////////
// AccessibilityStatusEventDetails

AccessibilityStatusEventDetails::AccessibilityStatusEventDetails(
    AccessibilityNotificationType notification_type,
    bool enabled)
    : notification_type(notification_type), enabled(enabled) {}

///////////////////////////////////////////////////////////////////////////////
//
// AccessibilityManager

// static
void AccessibilityManager::Initialize() {
  CHECK(g_accessibility_manager == nullptr);
  g_accessibility_manager = new AccessibilityManager();
}

// static
void AccessibilityManager::Shutdown() {
  CHECK(g_accessibility_manager);
  delete g_accessibility_manager;
  g_accessibility_manager = nullptr;
}

// static
AccessibilityManager* AccessibilityManager::Get() {
  return g_accessibility_manager;
}

// static
void AccessibilityManager::ShowAccessibilityHelp() {
  ShowSingletonTab(ProfileManager::GetActiveUserProfile(),
                   GURL(chrome::kChromeAccessibilityHelpURL));
}

AccessibilityManager::AccessibilityManager() {
  session_observation_.Observe(session_manager::SessionManager::Get());

  on_app_terminating_subscription_ =
      browser_shutdown::AddAppTerminatingCallback(base::BindOnce(
          &AccessibilityManager::OnAppTerminating, base::Unretained(this)));

  focus_changed_subscription_ =
      content::BrowserAccessibilityState::GetInstance()
          ->RegisterFocusChangedCallback(
              base::BindRepeating(&AccessibilityManager::OnFocusChangedInPage,
                                  base::Unretained(this)));

  input_method::InputMethodManager::Get()->AddObserver(this);
  user_manager::UserManager::Get()->AddSessionStateObserver(this);

  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  audio::SoundsManager* manager = audio::SoundsManager::Get();
  manager->Initialize(static_cast<int>(Sound::kShutdown),
                      bundle.GetRawDataResource(IDR_SOUND_SHUTDOWN_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(
      static_cast<int>(Sound::kSpokenFeedbackEnabled),
      bundle.GetRawDataResource(IDR_SOUND_SPOKEN_FEEDBACK_ENABLED_WAV),
      media::AudioCodec::kPCM);
  manager->Initialize(
      static_cast<int>(Sound::kSpokenFeedbackDisabled),
      bundle.GetRawDataResource(IDR_SOUND_SPOKEN_FEEDBACK_DISABLED_WAV),
      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kPassthrough),
                      bundle.GetRawDataResource(IDR_SOUND_PASSTHROUGH_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kExitScreen),
                      bundle.GetRawDataResource(IDR_SOUND_EXIT_SCREEN_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kEnterScreen),
                      bundle.GetRawDataResource(IDR_SOUND_ENTER_SCREEN_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(
      static_cast<int>(Sound::kSpokenFeedbackToggleCountdownHigh),
      bundle.GetRawDataResource(
          IDR_SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_HIGH_WAV),
      media::AudioCodec::kPCM);
  manager->Initialize(
      static_cast<int>(Sound::kSpokenFeedbackToggleCountdownLow),
      bundle.GetRawDataResource(
          IDR_SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_LOW_WAV),
      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kTouchType),
                      bundle.GetRawDataResource(IDR_SOUND_TOUCH_TYPE_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kStartup),
                      bundle.GetRawDataResource(IDR_SOUND_STARTUP_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kLock),
                      bundle.GetRawDataResource(IDR_SOUND_LOCK_WAV),
                      media::AudioCodec::kPCM);
  manager->Initialize(static_cast<int>(Sound::kUnlock),
                      bundle.GetRawDataResource(IDR_SOUND_UNLOCK_WAV),
                      media::AudioCodec::kPCM);

  if (VolumeAdjustSoundEnabled()) {
    manager->Initialize(static_cast<int>(Sound::kVolumeAdjust),
                        bundle.GetRawDataResource(IDR_SOUND_VOLUME_ADJUST_WAV),
                        media::AudioCodec::kPCM);
  }
  if (::features::IsAccessibilityServiceEnabled()) {
    // We create an AccessibilityServiceClient even if the build flag is not
    // set, because this allows tests with the AccessibilityServiceClient to
    // run.
    accessibility_service_client_ =
        std::make_unique<AccessibilityServiceClient>();
#if !BUILDFLAG(ENABLE_ACCESSIBILITY_SERVICE)
    LOG(WARNING) << "Constructing an AccessibilityServiceClient for "
                    "AccessibilityManager, but Chrome was not built with the "
                    "Accessibility Service. Did you mean to add "
                    "`enable_accessibility_service=true` to your gn args?";
#endif  // !BUILDFLAG(ENABLE_ACCESSIBILITY_SERVICE)
  }

  base::FilePath resources_path;
  if (!base::PathService::Get(chrome::DIR_RESOURCES, &resources_path)) {
    NOTREACHED();
  }

  const bool enable_v3_manifest =
      base::CommandLine::ForCurrentProcess()->HasSwitch(
          ::switches::kEnableExperimentalAccessibilityManifestV3);

  const bool enable_accessibility_common_v3_manifest =
      ::features::IsAccessibilityManifestV3EnabledForAccessibilityCommon();
  const base::FilePath::CharType* accessibility_common_manifest_filename =
      enable_v3_manifest || enable_accessibility_common_v3_manifest
          ? extension_misc::kAccessibilityCommonManifestV3Filename
          : extension_misc::kAccessibilityCommonManifestFilename;
  const base::FilePath::CharType* accessibility_common_guest_manifest_filename =
      enable_v3_manifest || enable_accessibility_common_v3_manifest
          ? extension_misc::kAccessibilityCommonGuestManifestV3Filename
          : extension_misc::kAccessibilityCommonGuestManifestFilename;

  accessibility_common_extension_loader_ =
      base::WrapUnique(new AccessibilityExtensionLoader(
          extension_misc::kAccessibilityCommonExtensionId,
          resources_path.Append(
              extension_misc::kAccessibilityCommonExtensionPath),
          accessibility_common_manifest_filename,
          accessibility_common_guest_manifest_filename,
          base::BindRepeating(
              &AccessibilityManager::PostUnloadAccessibilityCommon,
              weak_ptr_factory_.GetWeakPtr())));

  const bool enable_chromevox_v3_manifest =
      ::features::IsAccessibilityManifestV3EnabledForChromeVox();
  const base::FilePath::CharType* chromevox_manifest_filename =
      enable_v3_manifest || enable_chromevox_v3_manifest
          ? extension_misc::kChromeVoxManifestV3Filename
          : extension_misc::kChromeVoxManifestFilename;
  const base::FilePath::CharType* chromevox_guest_manifest_filename =
      enable_v3_manifest || enable_chromevox_v3_manifest
          ? extension_misc::kChromeVoxGuestManifestV3Filename
          : extension_misc::kChromeVoxGuestManifestFilename;

  chromevox_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
      extension_misc::kChromeVoxExtensionId,
      resources_path.Append(extension_misc::kChromeVoxExtensionPath),
      chromevox_manifest_filename, chromevox_guest_manifest_filename,
      base::BindRepeating(&AccessibilityManager::PostUnloadChromeVox,
                          weak_ptr_factory_.GetWeakPtr())));

  const bool enable_select_to_speak_v3_manifest =
      ::features::IsAccessibilityManifestV3EnabledForSelectToSpeak();
  const base::FilePath::CharType* select_to_speak_manifest_filename =
      enable_v3_manifest || enable_select_to_speak_v3_manifest
          ? extension_misc::kSelectToSpeakManifestV3Filename
          : extension_misc::kSelectToSpeakManifestFilename;
  const base::FilePath::CharType* select_to_speak_guest_manifest_filename =
      enable_v3_manifest || enable_select_to_speak_v3_manifest
          ? extension_misc::kSelectToSpeakGuestManifestV3Filename
          : extension_misc::kSelectToSpeakGuestManifestFilename;

  select_to_speak_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
      extension_misc::kSelectToSpeakExtensionId,
      resources_path.Append(extension_misc::kSelectToSpeakExtensionPath),
      select_to_speak_manifest_filename,
      select_to_speak_guest_manifest_filename,
      base::BindRepeating(&AccessibilityManager::PostUnloadSelectToSpeak,
                          weak_ptr_factory_.GetWeakPtr())));

  const bool enable_switch_access_v3_manifest =
      ::features::IsAccessibilityManifestV3EnabledForSwitchAccess();
  const base::FilePath::CharType* switch_access_manifest_filename =
      enable_v3_manifest || enable_switch_access_v3_manifest
          ? extension_misc::kSwitchAccessManifestV3Filename
          : extension_misc::kSwitchAccessManifestFilename;
  const base::FilePath::CharType* switch_access_guest_manifest_filename =
      enable_v3_manifest || enable_switch_access_v3_manifest
          ? extension_misc::kSwitchAccessGuestManifestV3Filename
          : extension_misc::kSwitchAccessGuestManifestFilename;

  switch_access_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
      extension_misc::kSwitchAccessExtensionId,
      resources_path.Append(extension_misc::kSwitchAccessExtensionPath),
      switch_access_manifest_filename, switch_access_guest_manifest_filename,
      base::BindRepeating(&AccessibilityManager::PostUnloadSwitchAccess,
                          weak_ptr_factory_.GetWeakPtr())));

  // Connect to the media session service.
  content::GetMediaSessionService().BindAudioFocusManager(
      audio_focus_manager_.BindNewPipeAndPassReceiver());

  AcceleratorController::SetVolumeAdjustmentSoundCallback(base::BindRepeating(
      &AccessibilityManager::PlayVolumeAdjustSound, base::Unretained(this)));

  CrasAudioHandler::Get()->AddAudioObserver(this);

  ui::DeviceDataManager::GetInstance()->AddObserver(this);

  dlc_installer_ = std::make_unique<AccessibilityDlcInstaller>();
}

AccessibilityManager::~AccessibilityManager() {
  CHECK(this == g_accessibility_manager);
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kManagerShutdown, false);
  NotifyAccessibilityStatusChanged(details);
  ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
  CrasAudioHandler::Get()->RemoveAudioObserver(this);
  user_manager::UserManager::Get()->RemoveSessionStateObserver(this);
  input_method::InputMethodManager::Get()->RemoveObserver(this);

  if (chromevox_panel_) {
    chromevox_panel_->CloseNow();
    chromevox_panel_ = nullptr;
  }

  AcceleratorController::SetVolumeAdjustmentSoundCallback({});
}

bool AccessibilityManager::ShouldShowAccessibilityMenu() {
  // If any of the loaded profiles has an accessibility feature turned on - or
  // enforced to always show the menu - we return true to show the menu.
  // NOTE: This includes the login screen profile, so if a feature is turned on
  // at the login screen the menu will show even if the user has no features
  // enabled inside the session. http://crbug.com/755631
  std::vector<Profile*> profiles =
      g_browser_process->profile_manager()->GetLoadedProfiles();
  for (Profile* profile : profiles) {
    PrefService* prefs = profile->GetPrefs();
    if (prefs->GetBoolean(prefs::kAccessibilityStickyKeysEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityLargeCursorEnabled) ||
        prefs->GetBoolean(::prefs::kLiveCaptionEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilitySpokenFeedbackEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilitySelectToSpeakEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilitySwitchAccessEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityHighContrastEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityAutoclickEnabled) ||
        prefs->GetBoolean(prefs::kShouldAlwaysShowAccessibilityMenu) ||
        prefs->GetBoolean(prefs::kAccessibilityScreenMagnifierEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityVirtualKeyboardEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityMonoAudioEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityCaretHighlightEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityCursorHighlightEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityFocusHighlightEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityDictationEnabled) ||
        prefs->GetBoolean(prefs::kDockedMagnifierEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityColorCorrectionEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilityBounceKeysEnabled) ||
        prefs->GetBoolean(prefs::kAccessibilitySlowKeysEnabled)) {
      return true;
    }
  }
  return false;
}

void AccessibilityManager::UpdateAlwaysShowMenuFromPref() {
  if (!profile_)
    return;

  // Update system tray menu visibility.
  AccessibilityController::Get()->NotifyAccessibilityStatusChanged();
}

void AccessibilityManager::EnableLargeCursor(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityLargeCursorEnabled, enabled);
  pref_service->CommitPendingWrite();
}

void AccessibilityManager::OnFaceGazeChanged() {
  OnAccessibilityCommonChanged(prefs::kAccessibilityFaceGazeEnabled);
  if (!profile_) {
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  if (!pref_service->GetBoolean(prefs::kAccessibilityFaceGazeEnabled)) {
    return;
  }

  if (pref_service->GetDict(prefs::kAccessibilityFaceGazeGesturesToMacros)
          .empty()) {
    // If FaceGaze is enabled but there isn't a gesture to action mapping, then
    // we should install a minimal mapping to provide a working default
    // experience.
    pref_service->SetDict(
        prefs::kAccessibilityFaceGazeGesturesToMacros,
        base::Value::Dict()
            .Set(kFaceGazeMouthSmileGesture, kFaceGazeLeftClickValue)
            .Set(kFaceGazeJawOpenGesture, kFaceGazeScrollValue));
    pref_service->SetDict(prefs::kAccessibilityFaceGazeGesturesToConfidence,
                          base::Value::Dict()
                              .Set(kFaceGazeMouthSmileGesture, 60)
                              .Set(kFaceGazeJawOpenGesture, 60));
    pref_service->CommitPendingWrite();
  }
}

void AccessibilityManager::OnLargeCursorChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleLargeCursor,
      IsLargeCursorEnabled());
  NotifyAccessibilityStatusChanged(details);
}

bool AccessibilityManager::IsLargeCursorEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityLargeCursorEnabled);
}

void AccessibilityManager::EnableLiveCaption(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(::prefs::kLiveCaptionEnabled, enabled);
  pref_service->CommitPendingWrite();
}

void AccessibilityManager::OnLiveCaptionChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleLiveCaption,
      IsLiveCaptionEnabled());
  NotifyAccessibilityStatusChanged(details);
}

bool AccessibilityManager::IsLiveCaptionEnabled() const {
  return profile_ &&
         profile_->GetPrefs()->GetBoolean(::prefs::kLiveCaptionEnabled);
}

void AccessibilityManager::EnableStickyKeys(bool enabled) {
  if (!profile_)
    return;
  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityStickyKeysEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsStickyKeysEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityStickyKeysEnabled);
}

bool AccessibilityManager::IsTouchpadDisabled() const {
  return AccessibilityController::Get()->IsTouchpadDisabled();
}

void AccessibilityManager::OnStickyKeysChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleStickyKeys, IsStickyKeysEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::EnableSpokenFeedback(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilitySpokenFeedbackEnabled, enabled);
  pref_service->CommitPendingWrite();
}

void AccessibilityManager::OnSpokenFeedbackChanged() {
  if (!profile_)
    return;

  const bool enabled = profile_->GetPrefs()->GetBoolean(
      prefs::kAccessibilitySpokenFeedbackEnabled);

  if (IsUserBrowserContext(profile_)) {
    user_manager::KnownUser known_user(g_browser_process->local_state());
    known_user.SetBooleanPref(
        multi_user_util::GetAccountIdFromProfile(profile_),
        kUserSpokenFeedbackEnabled, enabled);
  }

  // TODO(crbug.com/1355633): Refactor a helper class that uses either
  // AccessibilityExtensionLoader or AccessibilityServiceClient when
  // setting profile or turning on/off extensions depending on the state
  // of the flag. That class will own both the loaders and the
  // AccessibilityServiceClient.
  if (enabled) {
    chromevox_loader_->SetBrowserContext(
        profile_,
        base::BindOnce(&AccessibilityManager::PostSwitchChromeVoxProfile,
                       weak_ptr_factory_.GetWeakPtr()));
  }

  bool was_enabled = spoken_feedback_enabled();
  if (was_enabled == enabled) {
    return;
  }

  if (enabled) {
    screen_reader_mode_ =
        content::BrowserAccessibilityState::GetInstance()
            ->CreateScopedModeForProcess(ui::AXMode::kScreenReader);
  } else {
    screen_reader_mode_.reset();
  }

  if (accessibility_service_client_)
    accessibility_service_client_->SetChromeVoxEnabled(enabled);

  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleSpokenFeedback, enabled);
  NotifyAccessibilityStatusChanged(details);

  if (enabled) {
    chromevox_loader_->Load(
        profile_, base::BindRepeating(&AccessibilityManager::PostLoadChromeVox,
                                      weak_ptr_factory_.GetWeakPtr()));
  } else {
    chromevox_loader_->Unload();
  }
  UpdateBrailleImeState();
}

void AccessibilityManager::EnableSpokenFeedbackWithTutorial() {
  // Automatically start the tutorial if the device is a Chromebook. Skip the
  // tutorial for all other device types. We want to avoid showing the tutorial
  // on CFM, for example, since it isn't typically used by external users.
  if (chromeos::GetDeviceType() == chromeos::DeviceType::kChromebook)
    start_chromevox_with_tutorial_ = true;
  EnableSpokenFeedback(true);
}

bool AccessibilityManager::IsSpokenFeedbackEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilitySpokenFeedbackEnabled);
}

void AccessibilityManager::EnableHighContrast(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityHighContrastEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsHighContrastEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityHighContrastEnabled);
}

void AccessibilityManager::OnHighContrastChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleHighContrastMode,
      IsHighContrastEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::OnLocaleChanged() {
  if (!profile_)
    return;

  if (!IsSpokenFeedbackEnabled())
    return;

  // If the system locale changes and spoken feedback is enabled,
  // reload ChromeVox so that it switches its internal translations
  // to the new language.
  EnableSpokenFeedback(false);
  EnableSpokenFeedback(true);
}

void AccessibilityManager::OnViewFocusedInArc(
    const gfx::Rect& bounds_in_screen) {
  AccessibilityController::Get()->SetFocusHighlightRect(bounds_in_screen);
}

bool AccessibilityManager::PlayEarcon(Sound sound_key, PlaySoundOption option) {
  base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
  if (cl->HasSwitch(kAshDisableSystemSounds))
    return false;
  if (option == PlaySoundOption::kOnlyIfSpokenFeedbackEnabled &&
      !IsSpokenFeedbackEnabled()) {
    return false;
  }
  return audio::SoundsManager::Get()->Play(static_cast<int>(sound_key));
}

bool AccessibilityManager::ShouldToggleSpokenFeedbackViaTouch() {
  return policy::EnrollmentRequisitionManager::IsMeetDevice();
}

bool AccessibilityManager::PlaySpokenFeedbackToggleCountdown(int tick_count) {
  return audio::SoundsManager::Get()->Play(
      tick_count % 2
          ? static_cast<int>(Sound::kSpokenFeedbackToggleCountdownHigh)
          : static_cast<int>(Sound::kSpokenFeedbackToggleCountdownLow));
}

void AccessibilityManager::HandleAccessibilityGesture(
    ax::mojom::Gesture gesture,
    gfx::PointF location) {
  if (!profile_)
    return;
  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  base::Value::List event_args;
  event_args.Append(ui::ToString(gesture));
  event_args.Append(location.x());
  event_args.Append(location.y());
  auto event = std::make_unique<extensions::Event>(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_ACCESSIBILITY_GESTURE,
      extensions::api::accessibility_private::OnAccessibilityGesture::
          kEventName,
      std::move(event_args));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kChromeVoxExtensionId, std::move(event));
}

void AccessibilityManager::SetTouchAccessibilityAnchorPoint(
    const gfx::Point& anchor_point) {
  for (auto* rwc : RootWindowController::root_window_controllers())
    rwc->SetTouchAccessibilityAnchorPoint(anchor_point);
}

void AccessibilityManager::EnableAutoclick(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityAutoclickEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsAutoclickEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityAutoclickEnabled);
}

void AccessibilityManager::EnableReducedAnimations(bool enabled) {
  if (!profile_) {
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityReducedAnimationsEnabled,
                           enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsReducedAnimationsEnabled() const {
  return ::features::IsAccessibilityReducedAnimationsEnabled() && profile_ &&
         profile_->GetPrefs()->GetBoolean(
             prefs::kAccessibilityReducedAnimationsEnabled);
}

void AccessibilityManager::EnableAlwaysShowScrollbars(bool enabled) {
  if (!profile_) {
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityAlwaysShowScrollbarsEnabled,
                           enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsAlwaysShowScrollbarsEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityAlwaysShowScrollbarsEnabled);
}

void AccessibilityManager::OnReducedAnimationsChanged() const {
  gfx::Animation::SetPrefersReducedMotionForA11y(IsReducedAnimationsEnabled());
  content::BrowserAccessibilityState::GetInstance()
      ->NotifyWebContentsPreferencesChanged();
}

void AccessibilityManager::EnableFaceGaze(bool enabled) {
  if (!profile_) {
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityFaceGazeEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsFaceGazeEnabled() const {
  return profile_ &&
         profile_->GetPrefs()->GetBoolean(prefs::kAccessibilityFaceGazeEnabled);
}

void AccessibilityManager::RequestEnableFaceGaze(bool enable) {
  if (enable) {
    EnableFaceGaze(enable);
  } else {
    AccessibilityController::Get()->RequestDisableFaceGaze();
  }
}

void AccessibilityManager::SendFaceGazeDisableDialogResultToSettings(
    bool accepted) {
  if (!facegaze_settings_event_handler_) {
    return;
  }

  facegaze_settings_event_handler_->HandleDisableDialogResult(accepted);
}

void AccessibilityManager::AddFaceGazeSettingsEventHandler(
    FaceGazeSettingsEventHandler* handler) {
  facegaze_settings_event_handler_ = handler;
}

void AccessibilityManager::RemoveFaceGazeSettingsEventHandler() {
  facegaze_settings_event_handler_ = nullptr;
}

void AccessibilityManager::ToggleGestureInfoForSettings(bool enabled) const {
  if (!profile_) {
    return;
  }

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  auto event_args = extensions::api::accessibility_private::
      OnToggleGestureInfoForSettings::Create(enabled);

  auto event = std::make_unique<extensions::Event>(
      extensions::events::
          ACCESSIBILITY_PRIVATE_ON_TOGGLE_GESTURE_INFO_FOR_SETTINGS,
      extensions::api::accessibility_private::OnToggleGestureInfoForSettings::
          kEventName,
      std::move(event_args));

  event_router->DispatchEventWithLazyListener(
      extension_misc::kAccessibilityCommonExtensionId, std::move(event));
}

void AccessibilityManager::SendGestureInfoToSettings(
    const std::vector<FaceGazeGestureInfo>& gesture_info) const {
  if (!facegaze_settings_event_handler_) {
    return;
  }

  facegaze_settings_event_handler_->HandleSendGestureInfoToSettings(
      gesture_info);
}

void AccessibilityManager::OnAccessibilityCommonChanged(
    const std::string& pref_name) {
  if (!profile_)
    return;

  const bool enabled = profile_->GetPrefs()->GetBoolean(pref_name);
  if (enabled) {
    accessibility_common_extension_loader_->SetBrowserContext(
        profile_, base::OnceClosure() /* done_callback */);
  }

  size_t pref_count = accessibility_common_enabled_features_.count(pref_name);
  if ((pref_count != 0 && enabled) || (pref_count == 0 && !enabled))
    return;

  if (accessibility_service_client_) {
    if (pref_name == prefs::kDockedMagnifierEnabled ||
        pref_name == prefs::kAccessibilityScreenMagnifierEnabled) {
      accessibility_service_client_->SetMagnifierEnabled(enabled);
    } else if (pref_name == prefs::kAccessibilityAutoclickEnabled) {
      accessibility_service_client_->SetAutoclickEnabled(enabled);
    }
  }

  if (enabled) {
    accessibility_common_enabled_features_.insert(pref_name);
    if (!accessibility_common_extension_loader_->loaded()) {
      accessibility_common_extension_loader_->Load(profile_, base::DoNothing());
    }
  } else {
    accessibility_common_enabled_features_.erase(pref_name);

    if (accessibility_common_enabled_features_.empty()) {
      accessibility_common_extension_loader_->Unload();
    }
  }
}

void AccessibilityManager::RequestAutoclickScrollableBoundsForPoint(
    const gfx::Point& point_in_screen) {
  if (!profile_)
    return;

  if (::features::IsAccessibilityServiceEnabled()) {
    accessibility_service_client_->RequestScrollableBoundsForPoint(
        point_in_screen);
    return;
  }

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);
  auto event_args = extensions::api::accessibility_private::
      OnScrollableBoundsForPointRequested::Create(point_in_screen.x(),
                                                  point_in_screen.y());
  std::unique_ptr<extensions::Event> event =
      std::make_unique<extensions::Event>(
          extensions::events::
              ACCESSIBILITY_PRIVATE_FIND_SCROLLABLE_BOUNDS_FOR_POINT,
          extensions::api::accessibility_private::
              OnScrollableBoundsForPointRequested::kEventName,
          std::move(event_args));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kAccessibilityCommonExtensionId, std::move(event));
}

void AccessibilityManager::MagnifierBoundsChanged(
    const gfx::Rect& bounds_in_screen) {
  if (!profile_)
    return;

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  auto magnifier_bounds =
      std::make_unique<extensions::api::accessibility_private::ScreenRect>();
  magnifier_bounds->left = bounds_in_screen.x();
  magnifier_bounds->top = bounds_in_screen.y();
  magnifier_bounds->width = bounds_in_screen.width();
  magnifier_bounds->height = bounds_in_screen.height();

  auto event_args =
      extensions::api::accessibility_private::OnMagnifierBoundsChanged::Create(
          *magnifier_bounds.get());

  auto event = std::make_unique<extensions::Event>(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_MAGNIFIER_BOUNDS_CHANGED,
      extensions::api::accessibility_private::OnMagnifierBoundsChanged::
          kEventName,
      std::move(event_args));

  event_router->DispatchEventWithLazyListener(
      extension_misc::kAccessibilityCommonExtensionId, std::move(event));

  if (magnifier_bounds_observer_for_test_) {
    magnifier_bounds_observer_for_test_.Run();
  }
}

void AccessibilityManager::EnableVirtualKeyboard(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityVirtualKeyboardEnabled,
                           enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsVirtualKeyboardEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityVirtualKeyboardEnabled);
}

void AccessibilityManager::OnVirtualKeyboardChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleVirtualKeyboard,
      IsVirtualKeyboardEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::EnableMonoAudio(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityMonoAudioEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsMonoAudioEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityMonoAudioEnabled);
}

void AccessibilityManager::OnMonoAudioChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleMonoAudio, IsMonoAudioEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::SetDarkenScreen(bool darken) {
  AccessibilityController::Get()->SetDarkenScreen(darken);

  if (screen_darken_observer_for_test_) {
    screen_darken_observer_for_test_.Run();
  }
}

void AccessibilityManager::SetCaretHighlightEnabled(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityCaretHighlightEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsCaretHighlightEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityCaretHighlightEnabled);
}

void AccessibilityManager::OnCaretHighlightChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleCaretHighlight,
      IsCaretHighlightEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::SetCursorHighlightEnabled(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityCursorHighlightEnabled,
                           enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsCursorHighlightEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityCursorHighlightEnabled);
}

void AccessibilityManager::OnCursorHighlightChanged() {
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleCursorHighlight,
      IsCursorHighlightEnabled());
  NotifyAccessibilityStatusChanged(details);
}

void AccessibilityManager::SetDictationEnabled(bool enabled) const {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityDictationEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsDictationEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityDictationEnabled);
}

void AccessibilityManager::OnDictationChanged(bool triggered_by_user) {
  OnAccessibilityCommonChanged(prefs::kAccessibilityDictationEnabled);
  dictation_triggered_by_user_ = triggered_by_user;
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  const bool enabled =
      pref_service->GetBoolean(prefs::kAccessibilityDictationEnabled);

  if (accessibility_service_client_) {
    accessibility_service_client_->SetDictationEnabled(enabled);
  }

  if (enabled &&
      pref_service->GetString(prefs::kAccessibilityDictationLocale).empty()) {
    // Dictation was turned on but the language pref isn't set yet. Determine if
    // this is an upgrade (Dictation was enabled at start-up and the toggle was
    // not triggered by a user) or a new user (Dictation was just enabled in
    // settings) and pick the language accordingly.
    const std::string locale = Dictation::DetermineDefaultSupportedLocale(
        profile_, /*new_user=*/triggered_by_user);

    // Ensure we don't trigger nudges, downloads or notifications for the locale
    // pref upgrade. If these need to occur they will occur below.
    ignore_dictation_locale_pref_change_ = true;
    pref_service->SetString(prefs::kAccessibilityDictationLocale, locale);
    pref_service->CommitPendingWrite();
  }

  // If SODA isn't available on the device, no need to try to install it.
  if (!::features::IsDictationOfflineAvailable()) {
    // Show network dictation dialog if needed. Locale doesn't matter as no
    // languages are supported by SODA.
    if (enabled && triggered_by_user && ShouldShowNetworkDictationDialog("")) {
      ShowNetworkDictationDialog();
    }
    return;
  }

  // We only reach this point if SODA is available.
  if (triggered_by_user && !enabled) {
    // Note: This should not be called at start-up or it will
    // push back SODA deletion each time start-up occurs with dictation
    // disabled.
    speech::SodaInstaller::GetInstance()->SetUninstallTimer(
        g_browser_process->local_state(),
        pref_service->GetString(prefs::kAccessibilityDictationLocale));
  }

  if (!enabled)
    return;

  // Dictation is enabled. Check that appropriate nudges, dialogs and downloads
  // are triggered.
  const std::string dictation_locale =
      pref_service->GetString(prefs::kAccessibilityDictationLocale);
  if (!triggered_by_user) {
    // This Dictation change was not due to an explicit user action.
    const std::optional<bool> offline_nudge =
        GetDictationOfflineNudgePrefForLocale(profile_, dictation_locale);

    // See if the Dictation locale can now work offline in the
    // background (not because the user explicitly toggled Dictation), and a
    // nudge hasn't yet been shown to the user.
    if (!offline_nudge || !offline_nudge.value()) {
      if (speech::SodaInstaller::GetInstance()->IsSodaInstalled(
              GetDictationLanguageCode())) {
        // The locale is already installed on device, show the nudge
        // immediately.
        ShowDictationLanguageUpgradedNudge(dictation_locale);
      } else if (!offline_nudge &&
                 base::Contains(speech::SodaInstaller::GetInstance()
                                    ->GetAvailableLanguages(),
                                dictation_locale)) {
        // If the SODA language isn't installed yet, update the preference to
        // ensure the nudge gets shown for this locale when installation
        // completes.
        ScopedDictPrefUpdate update(
            pref_service, prefs::kAccessibilityDictationLocaleOfflineNudge);
        update->Set(dictation_locale, false);
      }
    }
    // This shouldn't depend on offline nudge in case SODA was uninstalled out
    // from under us (could happen manually on a test image).
    // Trigger an installation.
    MaybeInstallSoda(dictation_locale);
  } else {
    // Explicit user action. Show download notification or dialog.
    MaybeShowNetworkDictationDialogOrInstallSoda(dictation_locale);
  }
}

void AccessibilityManager::OnDictationLocaleChanged() {
  if (ignore_dictation_locale_pref_change_) {
    ignore_dictation_locale_pref_change_ = false;
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  const bool enabled =
      pref_service->GetBoolean(prefs::kAccessibilityDictationEnabled);
  if (!enabled)
    return;

  const std::string dictation_locale =
      pref_service->GetString(prefs::kAccessibilityDictationLocale);
  dictation_triggered_by_user_ = true;
  MaybeShowNetworkDictationDialogOrInstallSoda(dictation_locale);
}

void AccessibilityManager::MaybeShowNetworkDictationDialogOrInstallSoda(
    const std::string& dictation_locale) {
  if (ShouldShowNetworkDictationDialog(dictation_locale))
    ShowNetworkDictationDialog();
  else
    MaybeInstallSoda(dictation_locale);
}

void AccessibilityManager::ShowDictationLanguageUpgradedNudge(
    const std::string& dictation_locale) {
  // Show the nudge, then set the pref to indicate that it has been shown
  // for this particular locale.
  AccessibilityController::Get()->ShowDictationLanguageUpgradedNudge(
      dictation_locale, g_browser_process->GetApplicationLocale());
  ScopedDictPrefUpdate update(profile_->GetPrefs(),
                              prefs::kAccessibilityDictationLocaleOfflineNudge);
  update->Set(dictation_locale, true);
}

void AccessibilityManager::SetFocusHighlightEnabled(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityFocusHighlightEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsFocusHighlightEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityFocusHighlightEnabled);
}

void AccessibilityManager::OnFocusHighlightChanged() {
  bool enabled = IsFocusHighlightEnabled();

  // Focus highlighting can't be on when spoken feedback is on, because
  // ChromeVox does its own focus highlighting.
  if (IsSpokenFeedbackEnabled())
    enabled = false;
  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleFocusHighlight, enabled);
  NotifyAccessibilityStatusChanged(details);

  // TODO(crbug.com/1096759): Load or unload the AccessibilityCommon extension
  // which will be used to get the currently focused view. This will enable us
  // to get views where focus is only represented in the accessibility tree,
  // like those set by aria-activedescendant. It will also possibly eliminate
  // the need for OnViewFocusedInArc.
}

void AccessibilityManager::SetSelectToSpeakEnabled(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilitySelectToSpeakEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsSelectToSpeakEnabled() const {
  return select_to_speak_enabled_;
}

void AccessibilityManager::RequestSelectToSpeakStateChange() {
  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  // Send an event to the Select-to-Speak extension requesting a state change.
  std::unique_ptr<extensions::Event> event(new extensions::Event(
      extensions::events::
          ACCESSIBILITY_PRIVATE_ON_SELECT_TO_SPEAK_STATE_CHANGE_REQUESTED,
      extensions::api::accessibility_private::
          OnSelectToSpeakStateChangeRequested::kEventName,
      base::Value::List()));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kSelectToSpeakExtensionId, std::move(event));
}

void AccessibilityManager::SetSelectToSpeakState(SelectToSpeakState state) {
  AccessibilityController::Get()->SetSelectToSpeakState(state);

  if (select_to_speak_state_observer_for_test_)
    select_to_speak_state_observer_for_test_.Run();
}

void AccessibilityManager::OnSelectToSpeakChanged() {
  if (!profile_)
    return;

  const bool enabled = profile_->GetPrefs()->GetBoolean(
      prefs::kAccessibilitySelectToSpeakEnabled);
  if (enabled) {
    select_to_speak_loader_->SetBrowserContext(profile_, base::OnceClosure());
  }

  if (select_to_speak_enabled_ == enabled)
    return;

  if (accessibility_service_client_)
    accessibility_service_client_->SetSelectToSpeakEnabled(enabled);

  select_to_speak_enabled_ = enabled;

  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleSelectToSpeak, enabled);
  NotifyAccessibilityStatusChanged(details);

  if (enabled) {
    select_to_speak_loader_->Load(
        profile_,
        base::BindRepeating(&AccessibilityManager::PostLoadSelectToSpeak,
                            weak_ptr_factory_.GetWeakPtr()));
    // Construct a delegate to connect SelectToSpeak and its EventHandler in
    // ash.
    select_to_speak_event_handler_delegate_ =
        std::make_unique<SelectToSpeakEventHandlerDelegateImpl>();
  } else {
    select_to_speak_loader_->Unload();
    select_to_speak_event_handler_delegate_.reset();
  }
}

void AccessibilityManager::OnSelectToSpeakContextMenuClick() {
  if (!profile_) {
    return;
  }

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  // Send an event to the Select-to-Speak extension requesting a state change.
  std::unique_ptr<extensions::Event> event(new extensions::Event(
      extensions::events::
          ACCESSIBILITY_PRIVATE_ON_SELECT_TO_SPEAK_CONTEXT_MENU_CLICKED,
      extensions::api::accessibility_private::
          OnSelectToSpeakContextMenuClicked::kEventName,
      base::Value::List()));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kSelectToSpeakExtensionId, std::move(event));
}

void AccessibilityManager::SetSwitchAccessEnabled(bool enabled) {
  if (!profile_)
    return;

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilitySwitchAccessEnabled, enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsSwitchAccessEnabled() const {
  return switch_access_enabled_;
}

void AccessibilityManager::OnSwitchAccessChanged() {
  if (!profile_)
    return;

  const bool enabled = profile_->GetPrefs()->GetBoolean(
      prefs::kAccessibilitySwitchAccessEnabled);

  if (enabled) {
    // Only update |was_vk_enabled_before_switch_access_| if the profile
    // changed.
    if (profile_ != switch_access_loader_->browser_context()) {
      was_vk_enabled_before_switch_access_ =
          ChromeKeyboardControllerClient::Get()->IsEnableFlagSet(
              keyboard::KeyboardEnableFlag::kExtensionEnabled);
    }

    switch_access_loader_->SetBrowserContext(profile_, base::OnceClosure());

    // Make sure we always update the VK state, on every profile transition.
    ChromeKeyboardControllerClient::Get()->SetEnableFlag(
        keyboard::KeyboardEnableFlag::kExtensionEnabled);
  }

  if (switch_access_enabled_ == enabled)
    return;

  if (accessibility_service_client_)
    accessibility_service_client_->SetSwitchAccessEnabled(enabled);

  switch_access_enabled_ = enabled;

  AccessibilityStatusEventDetails details(
      AccessibilityNotificationType::kToggleSwitchAccess, enabled);
  NotifyAccessibilityStatusChanged(details);

  if (enabled) {
    switch_access_loader_->Load(profile_, base::DoNothing());
  }
}

void AccessibilityManager::OnSwitchAccessDisabled() {
  switch_access_loader_->Unload();
}

void AccessibilityManager::SetColorCorrectionEnabled(bool enabled) {
  if (!profile_) {
    return;
  }

  PrefService* pref_service = profile_->GetPrefs();
  pref_service->SetBoolean(prefs::kAccessibilityColorCorrectionEnabled,
                           enabled);
  pref_service->CommitPendingWrite();
}

bool AccessibilityManager::IsColorCorrectionEnabled() const {
  return profile_ && profile_->GetPrefs()->GetBoolean(
                         prefs::kAccessibilityColorCorrectionEnabled);
}

bool AccessibilityManager::IsBrailleDisplayConnected() const {
  return braille_display_connected_;
}

void AccessibilityManager::CheckBrailleState() {
  BrailleController* braille_controller = GetBrailleController();
  if (!scoped_braille_observation_.IsObservingSource(braille_controller))
    scoped_braille_observation_.Observe(braille_controller);
  content::GetIOThreadTaskRunner({})->PostTaskAndReplyWithResult(
      FROM_HERE,
      base::BindOnce(&BrailleController::GetDisplayState,
                     base::Unretained(braille_controller)),
      base::BindOnce(&AccessibilityManager::ReceiveBrailleDisplayState,
                     weak_ptr_factory_.GetWeakPtr()));
}

void AccessibilityManager::ReceiveBrailleDisplayState(
    std::unique_ptr<DisplayState> state) {
  OnBrailleDisplayStateChanged(*state);
}

void AccessibilityManager::UpdateBrailleImeState() {
  if (!profile_)
    return;
  PrefService* pref_service = profile_->GetPrefs();
  std::string preload_engines_str =
      pref_service->GetString(::prefs::kLanguagePreloadEngines);
  std::vector<std::string_view> preload_engines = base::SplitStringPiece(
      preload_engines_str, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  std::vector<std::string_view>::iterator it = std::ranges::find(
      preload_engines, extension_ime_util::kBrailleImeEngineId);
  bool is_enabled = (it != preload_engines.end());
  bool should_be_enabled =
      (IsSpokenFeedbackEnabled() && braille_display_connected_);
  if (is_enabled == should_be_enabled)
    return;
  if (should_be_enabled)
    preload_engines.push_back(extension_ime_util::kBrailleImeEngineId);
  else
    preload_engines.erase(it);
  pref_service->SetString(::prefs::kLanguagePreloadEngines,
                          base::JoinString(preload_engines, ","));
  braille_ime_current_ = false;
}

bool AccessibilityManager::IsFullscreenMagnifierEnabled() const {
  return ash::AccessibilityController::Get()->fullscreen_magnifier().enabled();
}

bool AccessibilityManager::IsDockedMagnifierEnabled() const {
  return ash::AccessibilityController::Get()->docked_magnifier().enabled();
}

bool AccessibilityManager::AllowQRCodeUX() const {
  // TODO(b/289246311): Should any other settings be included here?
  return !(IsSpokenFeedbackEnabled() || IsSwitchAccessEnabled() ||
           IsBrailleDisplayConnected() || IsFaceGazeEnabled() ||
           IsFullscreenMagnifierEnabled() || IsDockedMagnifierEnabled());
}

// Overridden from InputMethodManager::Observer.
void AccessibilityManager::InputMethodChanged(
    input_method::InputMethodManager* manager,
    Profile* /* profile */,
    bool show_message) {
  Shell::Get()->sticky_keys_controller()->SetMod3AndAltGrModifiersEnabled(
      manager->IsISOLevel5ShiftUsedByCurrentInputMethod(),
      manager->IsAltGrUsedByCurrentInputMethod());
  const input_method::InputMethodDescriptor descriptor =
      manager->GetActiveIMEState()->GetCurrentInputMethod();
  braille_ime_current_ =
      (descriptor.id() == extension_ime_util::kBrailleImeEngineId);
}

void AccessibilityManager::OnActiveOutputNodeChanged() {
  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kFirstExecAfterBoot))
    return;

  AudioDevice device;
  CrasAudioHandler::Get()->GetPrimaryActiveOutputDevice(&device);
  if (device.type == AudioDeviceType::kOther)
    return;

  CrasAudioHandler::Get()->RemoveAudioObserver(this);
  if (GetStartupSoundEnabled()) {
    PlayEarcon(Sound::kStartup, PlaySoundOption::kAlways);
    return;
  }

  user_manager::KnownUser known_user(g_browser_process->local_state());
  const auto account_ids = known_user.GetKnownAccountIds();
  for (const auto& account_id : account_ids) {
    if (known_user.FindBoolPath(account_id, kUserSpokenFeedbackEnabled)
            .value_or(false)) {
      PlayEarcon(Sound::kStartup, PlaySoundOption::kAlways);
      break;
    }
  }
}

void AccessibilityManager::OnProfileWillBeDestroyed(Profile* profile) {
  DCHECK_EQ(profile_, profile);
  SetProfile(nullptr);
}

void AccessibilityManager::SetProfile(Profile* profile) {
  if (profile_ == profile)
    return;

  if (profile_)
    DCHECK(profile_observation_.IsObservingSource(profile_.get()));
  profile_observation_.Reset();
  DCHECK(!profile_observation_.IsObserving());

  pref_change_registrar_.reset();
  local_state_pref_change_registrar_.reset();

  // All features supported by accessibility common which don't need
  // separate pref change handlers.
  static const char* kAccessibilityCommonFeatures[] = {
      prefs::kAccessibilityAutoclickEnabled,
      prefs::kAccessibilityScreenMagnifierEnabled,
      prefs::kDockedMagnifierEnabled};

  if (profile) {
    pref_change_registrar_ = std::make_unique<PrefChangeRegistrar>();
    pref_change_registrar_->Init(profile->GetPrefs());
    pref_change_registrar_->Add(
        prefs::kShouldAlwaysShowAccessibilityMenu,
        base::BindRepeating(&AccessibilityManager::UpdateAlwaysShowMenuFromPref,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityLargeCursorEnabled,
        base::BindRepeating(&AccessibilityManager::OnLargeCursorChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityLargeCursorDipSize,
        base::BindRepeating(&AccessibilityManager::OnLargeCursorChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        ::prefs::kLiveCaptionEnabled,
        base::BindRepeating(&AccessibilityManager::OnLiveCaptionChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityStickyKeysEnabled,
        base::BindRepeating(&AccessibilityManager::OnStickyKeysChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilitySpokenFeedbackEnabled,
        base::BindRepeating(&AccessibilityManager::OnSpokenFeedbackChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityHighContrastEnabled,
        base::BindRepeating(&AccessibilityManager::OnHighContrastChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityVirtualKeyboardEnabled,
        base::BindRepeating(&AccessibilityManager::OnVirtualKeyboardChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityMonoAudioEnabled,
        base::BindRepeating(&AccessibilityManager::OnMonoAudioChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityCaretHighlightEnabled,
        base::BindRepeating(&AccessibilityManager::OnCaretHighlightChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityCursorHighlightEnabled,
        base::BindRepeating(&AccessibilityManager::OnCursorHighlightChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityFocusHighlightEnabled,
        base::BindRepeating(&AccessibilityManager::OnFocusHighlightChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilitySelectToSpeakEnabled,
        base::BindRepeating(&AccessibilityManager::OnSelectToSpeakChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilitySelectToSpeakEnhancedNetworkVoices,
        base::BindRepeating(&AccessibilityManager::UpdateEnhancedNetworkTts,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityEnhancedNetworkVoicesInSelectToSpeakAllowed,
        base::BindRepeating(&AccessibilityManager::UpdateEnhancedNetworkTts,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilitySwitchAccessEnabled,
        base::BindRepeating(&AccessibilityManager::OnSwitchAccessChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityReducedAnimationsEnabled,
        base::BindRepeating(&AccessibilityManager::OnReducedAnimationsChanged,
                            base::Unretained(this)));
    pref_change_registrar_->Add(
        prefs::kAccessibilityDictationEnabled,
        base::BindRepeating(&AccessibilityManager::OnDictationChanged,
                            base::Unretained(this),
                            /*triggered_by_user=*/true));
    pref_change_registrar_->Add(
        prefs::kAccessibilityDictationLocale,
        base::BindRepeating(&AccessibilityManager::OnDictationLocaleChanged,
                            base::Unretained(this)));

    for (const std::string& feature : kAccessibilityCommonFeatures) {
      pref_change_registrar_->Add(
          feature, base::BindRepeating(
                       &AccessibilityManager::OnAccessibilityCommonChanged,
                       base::Unretained(this)));
    }

    pref_change_registrar_->Add(
        prefs::kAccessibilityFaceGazeEnabled,
        base::BindRepeating(&AccessibilityManager::OnFaceGazeChanged,
                            base::Unretained(this)));

    local_state_pref_change_registrar_ =
        std::make_unique<PrefChangeRegistrar>();
    local_state_pref_change_registrar_->Init(g_browser_process->local_state());
    local_state_pref_change_registrar_->Add(
        language::prefs::kApplicationLocale,
        base::BindRepeating(&AccessibilityManager::OnLocaleChanged,
                            base::Unretained(this)));

    UpdateChromeOSAccessibilityHistograms();

    extensions::ExtensionRegistry* registry =
        extensions::ExtensionRegistry::Get(profile);
    if (!extension_registry_observations_.IsObservingSource(registry))
      extension_registry_observations_.AddObservation(registry);

    profile_observation_.Observe(profile);
  }

  if (accessibility_service_client_) {
    accessibility_service_client_->SetProfile(profile);
  }

  bool had_profile = (profile_ != nullptr);
  profile_ = profile;

  if (!had_profile && profile)
    CheckBrailleState();
  else
    UpdateBrailleImeState();
  UpdateAlwaysShowMenuFromPref();

  // TODO(warx): reconcile to ash once the prefs registration above is moved to
  // ash.
  OnSpokenFeedbackChanged();
  OnSwitchAccessChanged();
  OnSelectToSpeakChanged();
  OnReducedAnimationsChanged();

  for (const std::string& feature : kAccessibilityCommonFeatures)
    OnAccessibilityCommonChanged(feature);

  OnAccessibilityCommonChanged(prefs::kAccessibilityFaceGazeEnabled);

  // Dictation is not in kAccessibilityCommonFeatures because it needs to
  // be handled in OnDictationChanged also. OnDictationChanged will call to
  // OnAccessibilityCommonChanged.
  OnDictationChanged(/*triggered_by_user=*/false);
}

void AccessibilityManager::SetProfileByUser(const user_manager::User* user) {
  Profile* profile = Profile::FromBrowserContext(
      BrowserContextHelper::Get()->GetBrowserContextByUser(user));
  DCHECK(profile);
  SetProfile(profile);
}

void AccessibilityManager::ActiveUserChanged(user_manager::User* active_user) {
  if (!active_user)
    return;

  active_user->AddProfileCreatedObserver(
      base::BindOnce(&AccessibilityManager::SetProfileByUser,
                     weak_ptr_factory_.GetWeakPtr(), active_user));
}

base::TimeDelta AccessibilityManager::PlayShutdownSound() {
  if (!PlayEarcon(Sound::kShutdown,
                  PlaySoundOption::kOnlyIfSpokenFeedbackEnabled)) {
    return base::TimeDelta();
  }
  return audio::SoundsManager::Get()->GetDuration(
      static_cast<int>(Sound::kShutdown));
}

base::CallbackListSubscription AccessibilityManager::RegisterCallback(
    const AccessibilityStatusCallback& cb) {
  return callback_list_.Add(cb);
}

void AccessibilityManager::NotifyAccessibilityStatusChanged(
    const AccessibilityStatusEventDetails& details) {
  callback_list_.Notify(details);

  if (details.notification_type ==
      AccessibilityNotificationType::kToggleDictation) {
    AccessibilityController::Get()->SetDictationActive(details.enabled);
  }

  // Update system tray menu visibility. Prefs tracked inside ash handle their
  // own updates to avoid race conditions (pref updates are asynchronous between
  // chrome and ash).
  if (details.notification_type ==
          AccessibilityNotificationType::kToggleScreenMagnifier ||
      details.notification_type ==
          AccessibilityNotificationType::kToggleDictation) {
    AccessibilityController::Get()->NotifyAccessibilityStatusChanged();
  }
}

void AccessibilityManager::UpdateChromeOSAccessibilityHistograms() {
  base::UmaHistogramBoolean("Accessibility.CrosSpokenFeedback",
                            IsSpokenFeedbackEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosHighContrast",
                            IsHighContrastEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosVirtualKeyboard",
                            IsVirtualKeyboardEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosStickyKeys",
                            IsStickyKeysEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosDisableTouchpad",
                            IsTouchpadDisabled());
  if (MagnificationManager::Get()) {
    base::UmaHistogramBoolean(
        "Accessibility.CrosScreenMagnifier",
        MagnificationManager::Get()->IsMagnifierEnabled());
    base::UmaHistogramBoolean(
        "Accessibility.CrosDockedMagnifier",
        MagnificationManager::Get()->IsDockedMagnifierEnabled());
  }
  if (profile_) {
    const PrefService* const prefs = profile_->GetPrefs();

    bool large_cursor_enabled =
        prefs->GetBoolean(prefs::kAccessibilityLargeCursorEnabled);
    base::UmaHistogramBoolean("Accessibility.CrosLargeCursor",
                              large_cursor_enabled);
    if (large_cursor_enabled) {
      base::HistogramBase* histogram = base::LinearHistogram::FactoryGet(
          "Accessibility.CrosLargeCursorSize2", kMinLargeCursorSize,
          kMaxLargeCursorSize + 1,
          (kMaxLargeCursorSize + 1 - kMinLargeCursorSize) / 2 + 2,
          base::HistogramBase::kUmaTargetedHistogramFlag);
      histogram->Add(
          prefs->GetInteger(prefs::kAccessibilityLargeCursorDipSize));
    }

    base::UmaHistogramBoolean(
        "Accessibility.CrosAlwaysShowA11yMenu",
        prefs->GetBoolean(prefs::kShouldAlwaysShowAccessibilityMenu));

    bool autoclick_enabled =
        prefs->GetBoolean(prefs::kAccessibilityAutoclickEnabled);
    base::UmaHistogramBoolean("Accessibility.CrosAutoclick", autoclick_enabled);

    if (::features::IsAccessibilityReducedAnimationsEnabled()) {
      bool reduced_animations_enabled =
          prefs->GetBoolean(prefs::kAccessibilityReducedAnimationsEnabled);
      base::UmaHistogramBoolean("Accessibility.CrosReducedAnimations",
                                reduced_animations_enabled);
    }

    int caret_blink_interval_ms =
        prefs->GetInteger(prefs::kAccessibilityCaretBlinkInterval);
    base::UmaHistogramSparse("Accessibility.CrosCaretBlinkInterval",
                             caret_blink_interval_ms);

    base::UmaHistogramBoolean(
        "Accessibility.CrosCursorColor",
        prefs->GetBoolean(prefs::kAccessibilityCursorColorEnabled));

    bool color_correction_enabled = IsColorCorrectionEnabled();
    base::UmaHistogramBoolean("Accessibility.CrosColorCorrection",
                              color_correction_enabled);
    if (color_correction_enabled) {
      base::UmaHistogramEnumeration(
          "Accessibility.CrosColorCorrection.FilterType",
          static_cast<ColorVisionCorrectionType>(prefs->GetInteger(
              prefs::kAccessibilityColorVisionCorrectionType)));
      base::UmaHistogramPercentage(
          "Accessibility.CrosColorCorrection.FilterAmount",
          prefs->GetInteger(prefs::kAccessibilityColorVisionCorrectionAmount));
    }

    if (::features::IsAccessibilityFlashScreenFeatureEnabled()) {
      base::UmaHistogramBoolean(
          "Accessibility.CrosFlashNotifications",
          prefs->GetBoolean(prefs::kAccessibilityFlashNotificationsEnabled));
    }

    if (::features::IsAccessibilityBounceKeysEnabled()) {
      bool bounce_keys_enabled =
          prefs->GetBoolean(prefs::kAccessibilityBounceKeysEnabled);
      base::UmaHistogramBoolean("Accessibility.CrosBounceKeys",
                                bounce_keys_enabled);
      if (bounce_keys_enabled) {
        base::UmaHistogramSparse(
            "Accessibility.CrosBounceKeysDelay",
            prefs->GetInteger(prefs::kAccessibilityBounceKeysDelayMs));
      }
    }

    if (::features::IsAccessibilitySlowKeysEnabled()) {
      bool slow_keys_enabled =
          prefs->GetBoolean(prefs::kAccessibilitySlowKeysEnabled);
      base::UmaHistogramBoolean("Accessibility.CrosSlowKeys",
                                slow_keys_enabled);
      if (slow_keys_enabled) {
        base::UmaHistogramSparse(
            "Accessibility.CrosSlowKeysDelay",
            prefs->GetInteger(prefs::kAccessibilitySlowKeysDelayMs));
      }
    }
  }
  base::UmaHistogramBoolean("Accessibility.CrosCaretHighlight",
                            IsCaretHighlightEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosCursorHighlight",
                            IsCursorHighlightEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosDictation",
                            IsDictationEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosFocusHighlight",
                            IsFocusHighlightEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosSelectToSpeak",
                            IsSelectToSpeakEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosSwitchAccess",
                            IsSwitchAccessEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosMonoAudio.Enabled",
                            IsMonoAudioEnabled());
  base::UmaHistogramBoolean("Accessibility.OOBEStartupSoundEnabled",
                            GetStartupSoundEnabled());
  base::UmaHistogramBoolean(
      "Accessibility.CrosSpokenFeedback.BrailleDisplayConnected",
      IsBrailleDisplayConnected());
  base::UmaHistogramBoolean("Accessibility.CrosFaceGaze", IsFaceGazeEnabled());
  base::UmaHistogramBoolean("Accessibility.CrosAlwaysShowScrollbar",
                            IsAlwaysShowScrollbarsEnabled());
}

void AccessibilityManager::PlayVolumeAdjustSound() {
  if (VolumeAdjustSoundEnabled()) {
    PlayEarcon(Sound::kVolumeAdjust,
               PlaySoundOption::kOnlyIfSpokenFeedbackEnabled);
  }
}

void AccessibilityManager::OnAppTerminating() {
  app_terminating_ = true;
}

void AccessibilityManager::MaybeLogBrailleDisplayConnectedTime() {
  if (braille_display_connect_time_ == base::Time()) {
    return;
  }
  base::TimeDelta duration = base::Time::Now() - braille_display_connect_time_;
  base::UmaHistogramCustomCounts(
      "Accessibility.CrosSpokenFeedback.BrailleDisplayConnected."
      "ConnectionDuration",
      /*sample=*/duration.InSeconds(), /*min=*/1,
      /*exclusive_max=*/base::Days(1) / base::Seconds(1), /*buckets=*/100);
  braille_display_connect_time_ = base::Time();
}

void AccessibilityManager::OnShimlessRmaLaunched() {
  SetActiveProfile();
}

void AccessibilityManager::OnLoginOrLockScreenVisible() {
  // Update `profile_` when entering the login screen.
  SetActiveProfile();
}

void AccessibilityManager::OnSessionStateChanged() {
  if (session_manager::SessionManager::Get()->session_state() ==
      session_manager::SessionState::LOCKED) {
    // Enter into the lock screen.
    CHECK(!locked_);
    locked_ = true;
    PlayEarcon(Sound::kLock, PlaySoundOption::kOnlyIfSpokenFeedbackEnabled);
  } else if (locked_) {
    // Exit from the lock screen.
    locked_ = false;
    PlayEarcon(Sound::kUnlock, PlaySoundOption::kOnlyIfSpokenFeedbackEnabled);
  }
}

void AccessibilityManager::SetActiveProfile() {
  Profile* profile = ProfileManager::GetActiveUserProfile();
  if (IsSigninBrowserContext(profile)) {
    SetProfile(profile);
  }
}

void AccessibilityManager::OnFocusChangedInPage(
    const content::FocusedNodeDetails& details) {
  // Avoid unnecessary IPC to ash when focus highlight feature is not enabled.
  if (!IsFocusHighlightEnabled())
    return;

  AccessibilityController::Get()->SetFocusHighlightRect(
      details.node_bounds_in_screen);
}

void AccessibilityManager::OnBrailleDisplayStateChanged(
    const DisplayState& display_state) {
  if (braille_display_connected_ != display_state.available) {
    base::UmaHistogramBoolean(
        "Accessibility.CrosSpokenFeedback.BrailleDisplayConnected."
        "ConnectionChanged",
        display_state.available);
  }
  braille_display_connected_ = display_state.available;
  if (braille_display_connected_ &&
      braille_display_connect_time_ == base::Time()) {
    braille_display_connect_time_ = base::Time::Now();
  }
  if (!braille_display_connected_) {
    MaybeLogBrailleDisplayConnectedTime();
  }
  AccessibilityController::Get()->BrailleDisplayStateChanged(
      braille_display_connected_);
  UpdateBrailleImeState();
}

void AccessibilityManager::OnBrailleKeyEvent(const KeyEvent& event) {
  // Ensure the braille IME is active on braille keyboard (dots) input.
  if ((event.command ==
       extensions::api::braille_display_private::KeyCommand::kDots) &&
      !braille_ime_current_) {
    input_method::InputMethodManager::Get()
        ->GetActiveIMEState()
        ->ChangeInputMethod(extension_ime_util::kBrailleImeEngineId,
                            false /* show_message */);
  }
}

void AccessibilityManager::OnExtensionUnloaded(
    content::BrowserContext* browser_context,
    const extensions::Extension* extension,
    extensions::UnloadedExtensionReason reason) {
  if (extension->id() == keyboard_listener_extension_id_)
    keyboard_listener_extension_id_ = std::string();

  if (extension->id() == extension_misc::kSwitchAccessExtensionId) {
    extensions::VirtualKeyboardAPI* api =
        extensions::BrowserContextKeyedAPIFactory<
            extensions::VirtualKeyboardAPI>::Get(browser_context);
    DCHECK(api);
    api->delegate()->SetRequestedKeyboardState(
        extensions::api::virtual_keyboard_private::KeyboardState::kAuto);
  }
}

void AccessibilityManager::OnShutdown(extensions::ExtensionRegistry* registry) {
  MaybeLogBrailleDisplayConnectedTime();
  extension_registry_observations_.RemoveObservation(registry);
}

void AccessibilityManager::PostLoadChromeVox() {
  // In browser_tests loading the ChromeVox extension can race with shutdown.
  // http://crbug.com/801700
  if (app_terminating_)
    return;

  // Do any setup work needed immediately after ChromeVox actually loads.
  const std::string& address = GetBluetoothBrailleDisplayAddress();
  if (!address.empty()) {
    // Maybe start brltty, when we have a bluetooth device stored for
    // connection.
    RestartBrltty(address);
  } else {
    // Otherwise, start brltty without an address. This covers cases when
    // ChromeVox is toggled off then back on all while a usb braille display is
    // connected.
    UpstartClient::Get()->StartJob(kBrlttyUpstartJobName, {},
                                   base::DoNothing());
  }

  PlayEarcon(Sound::kSpokenFeedbackEnabled, PlaySoundOption::kAlways);

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  const std::string& extension_id = extension_misc::kChromeVoxExtensionId;

  std::unique_ptr<extensions::Event> event(new extensions::Event(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_INTRODUCE_CHROME_VOX,
      extensions::api::accessibility_private::OnIntroduceChromeVox::kEventName,
      base::Value::List()));
  event_router->DispatchEventWithLazyListener(extension_id, std::move(event));

  if (!chromevox_panel_ && spoken_feedback_enabled()) {
    CreateChromeVoxPanel();
  }

  audio_focus_manager_->SetEnforcementMode(
      media_session::mojom::EnforcementMode::kNone);

  // Force volume slide gesture to be on for Chromebox for Meetings provisioned
  // devices.
  if (policy::EnrollmentRequisitionManager::IsMeetDevice()) {
    AccessibilityController::Get()->EnableChromeVoxVolumeSlideGesture();
  }

  if (start_chromevox_with_tutorial_) {
    ShowChromeVoxTutorial();
    // Reset the state variable to prevent the tutorial from opening
    // automatically in the future.
    start_chromevox_with_tutorial_ = false;
  }
}

void AccessibilityManager::PostUnloadChromeVox() {
  // Do any teardown work needed immediately after ChromeVox actually unloads.
  // Stop brltty.
  UpstartClient::Get()->StopJob(kBrlttyUpstartJobName, {}, base::DoNothing());

  PlayEarcon(Sound::kSpokenFeedbackDisabled, PlaySoundOption::kAlways);

  RemoveFocusRings(ax::mojom::AssistiveTechnologyType::kChromeVox);

  if (chromevox_panel_) {
    chromevox_panel_->Close();
    chromevox_panel_ = nullptr;
  }

  // In case the user darkened the screen, undarken it now.
  SetDarkenScreen(false);

  audio_focus_manager_->SetEnforcementMode(
      media_session::mojom::EnforcementMode::kDefault);
}

void AccessibilityManager::CreateChromeVoxPanel() {
  DCHECK(!chromevox_panel_ && spoken_feedback_enabled());
  chromevox_panel_ = new ChromeVoxPanel(profile_);
  chromevox_panel_widget_observer_ =
      std::make_unique<AccessibilityPanelWidgetObserver>(
          chromevox_panel_->GetWidget(),
          base::BindOnce(&AccessibilityManager::OnChromeVoxPanelDestroying,
                         base::Unretained(this)));
}

void AccessibilityManager::PostSwitchChromeVoxProfile() {
  if (chromevox_panel_) {
    chromevox_panel_->CloseNow();
    chromevox_panel_ = nullptr;
  }
  if (!chromevox_panel_ && spoken_feedback_enabled()) {
    CreateChromeVoxPanel();
  }
}

void AccessibilityManager::OnChromeVoxPanelDestroying() {
  chromevox_panel_widget_observer_.reset(nullptr);
  chromevox_panel_ = nullptr;
}

void AccessibilityManager::PostLoadSelectToSpeak() {
  UpdateEnhancedNetworkTts();
}

void AccessibilityManager::PostUnloadSelectToSpeak() {
  // Do any teardown work needed immediately after Select-to-Speak actually
  // unloads.

  // Clear the accessibility focus ring and highlight.
  RemoveFocusRings(ax::mojom::AssistiveTechnologyType::kSelectToSpeak);
  HideHighlights();

  UpdateEnhancedNetworkTts();
}

void AccessibilityManager::UpdateEnhancedNetworkTts() {
  if (!profile_)
    return;

  // Load enhanced network voices if Select to Speak is running and the voices
  // are enabled by Select to Speak policy, and either the user has already
  // agreed to use network voices or they haven't seen the dialog at all yet.
  // We load them if the user hasn't seen the dialog yet because this will
  // allow the voices to be ready to go as soon as the dialog is accepted.
  // The dialog is only shown the very first time a user triggers Select to
  // Speak.
  if (profile_->GetPrefs()->GetBoolean(
          prefs::kAccessibilityEnhancedNetworkVoicesInSelectToSpeakAllowed) &&
      profile_->GetPrefs()->GetBoolean(
          prefs::kAccessibilitySelectToSpeakEnabled) &&
      (profile_->GetPrefs()->GetBoolean(
           prefs::kAccessibilitySelectToSpeakEnhancedNetworkVoices) ||
       !profile_->GetPrefs()->GetBoolean(
           prefs::kAccessibilitySelectToSpeakEnhancedVoicesDialogShown))) {
    LoadEnhancedNetworkTts();
  } else {
    UnloadEnhancedNetworkTts();
  }
}

void AccessibilityManager::LoadEnhancedNetworkTtsForTest() {
  LoadEnhancedNetworkTts();
}

void AccessibilityManager::LoadEnhancedNetworkTts() {
  if (!profile_)
    return;

  auto* component_loader = extensions::ComponentLoader::Get(profile_);

  if (component_loader->Exists(extension_misc::kEnhancedNetworkTtsExtensionId))
    return;

  base::FilePath resources_path;
  if (!base::PathService::Get(chrome::DIR_RESOURCES, &resources_path)) {
    NOTREACHED();
  }

  const bool enable_v3_manifest =
      base::CommandLine::ForCurrentProcess()->HasSwitch(
          ::switches::kEnableExperimentalAccessibilityManifestV3) ||
      ::features::IsAccessibilityManifestV3EnabledForEnhancedNetworkTts();
  const base::FilePath::CharType* manifest_filename =
      enable_v3_manifest ? extension_misc::kEnhancedNetworkTtsManifestV3Filename
                         : extension_misc::kEnhancedNetworkTtsManifestFilename;
  const base::FilePath::CharType* guest_manifest_filename =
      enable_v3_manifest
          ? extension_misc::kEnhancedNetworkTtsGuestManifestV3Filename
          : extension_misc::kEnhancedNetworkTtsGuestManifestFilename;

  component_loader->AddComponentFromDirWithManifestFilename(
      resources_path.Append(extension_misc::kEnhancedNetworkTtsExtensionPath),
      extension_misc::kEnhancedNetworkTtsExtensionId, manifest_filename,
      guest_manifest_filename,
      base::BindOnce(&AccessibilityManager::PostLoadEnhancedNetworkTts,
                     base::Unretained(this)));
}

void AccessibilityManager::UnloadEnhancedNetworkTts() {
  if (!profile_)
    return;

  auto* component_loader = extensions::ComponentLoader::Get(profile_);
  if (component_loader->Exists(extension_misc::kEnhancedNetworkTtsExtensionId))
    component_loader->Remove(extension_misc::kEnhancedNetworkTtsExtensionId);
}

void AccessibilityManager::PostLoadEnhancedNetworkTts() {
  if (enhanced_network_tts_waiter_for_test_)
    std::move(enhanced_network_tts_waiter_for_test_).Run();
}

void AccessibilityManager::PostUnloadSwitchAccess() {
  // Do any teardown work needed immediately after Switch Access actually
  // unloads.

  // Clear the accessibility focus ring.
  RemoveFocusRings(ax::mojom::AssistiveTechnologyType::kSwitchAccess);

  if (!was_vk_enabled_before_switch_access_) {
    ChromeKeyboardControllerClient::Get()->ClearEnableFlag(
        keyboard::KeyboardEnableFlag::kExtensionEnabled);
  } else {
    was_vk_enabled_before_switch_access_ = false;
  }
}

void AccessibilityManager::PostUnloadAccessibilityCommon() {
  // Do any teardown work needed immediately after the Accessibility Common
  // extension actually unloads. This may be used by all features which make
  // use of the Accessibility Common extension.
  RemoveFocusRings(ax::mojom::AssistiveTechnologyType::kAutoClick);
  RemoveFocusRings(ax::mojom::AssistiveTechnologyType::kMagnifier);
}

void AccessibilityManager::SetKeyboardListenerExtensionId(
    const std::string& id,
    content::BrowserContext* context) {
  keyboard_listener_extension_id_ = id;

  extensions::ExtensionRegistry* registry =
      extensions::ExtensionRegistry::Get(context);
  if (!extension_registry_observations_.IsObservingSource(registry) &&
      !id.empty())
    extension_registry_observations_.AddObservation(registry);
}

bool AccessibilityManager::ToggleDictation() {
  if (!profile_) {
    return false;
  }

  const speech::LanguageCode language_code = GetDictationLanguageCode();
  if (!dictation_active_ && ::features::IsDictationOfflineAvailable() &&
      speech::SodaInstaller::GetInstance()->IsSodaDownloading(language_code)) {
    // Only return early if the user tried to toggle Dictation on during a SODA
    // download; if the user tried to toggle Dictation off, we can let this pass
    // through, even if SODA is in-progress.
    return false;
  }

  // Send an event to accessibility common, where Dictation logic lives.
  dictation_active_ = !dictation_active_;
  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);
  base::Value::List event_args;
  event_args.Append(dictation_active_);
  auto event = std::make_unique<extensions::Event>(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_TOGGLE_DICTATION,
      extensions::api::accessibility_private::OnToggleDictation::kEventName,
      std::move(event_args));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kAccessibilityCommonExtensionId, std::move(event));

  return dictation_active_;
}

void AccessibilityManager::OpenSettingsSubpage(const std::string& subpage) {
  // TODO(chrome-a11y-core): we can't open a settings page when you're on the
  // signin profile, but maybe we should notify the user and explain why?
  Profile* profile = AccessibilityManager::Get()->profile();
  if (!ash::ProfileHelper::IsSigninProfile(profile) &&
      chromeos::settings::IsOSSettingsSubPage(subpage)) {
    chrome::SettingsWindowManager::GetInstance()->ShowOSSettings(profile,
                                                                 subpage);
    if (open_settings_subpage_observer_for_test_) {
      open_settings_subpage_observer_for_test_.Run();
    }
  }
}

const std::string AccessibilityManager::GetFocusRingId(
    ax::mojom::AssistiveTechnologyType at_type,
    const std::string& focus_ring_name) {
  // Add the focus ring name to the list of focus rings for the extension.
  GetFocusRingsForATType(at_type).insert(focus_ring_name);
  std::ostringstream typeStringStream;
  typeStringStream << at_type;
  return typeStringStream.str() + '-' + focus_ring_name;
}

std::set<std::string>& AccessibilityManager::GetFocusRingsForATType(
    ax::mojom::AssistiveTechnologyType at_type) {
  if (focus_ring_names_for_at_type_.count(at_type) == 0) {
    focus_ring_names_for_at_type_.emplace(at_type, std::set<std::string>());
  }
  return focus_ring_names_for_at_type_.find(at_type)->second;
}

void AccessibilityManager::RemoveFocusRings(
    ax::mojom::AssistiveTechnologyType at_type) {
  if (focus_ring_names_for_at_type_.count(at_type) != 0) {
    const std::set<std::string>& focus_ring_names =
        focus_ring_names_for_at_type_.find(at_type)->second;

    for (const std::string& focus_ring_name : focus_ring_names)
      HideFocusRing(GetFocusRingId(at_type, focus_ring_name));
  }
  focus_ring_names_for_at_type_.erase(at_type);
}

void AccessibilityManager::SetFocusRing(
    std::string focus_ring_id,
    std::unique_ptr<AccessibilityFocusRingInfo> focus_ring) {
  AccessibilityFocusRingController::Get()->SetFocusRing(focus_ring_id,
                                                        std::move(focus_ring));
}

void AccessibilityManager::HideFocusRing(std::string focus_ring_id) {
  AccessibilityFocusRingController::Get()->HideFocusRing(focus_ring_id);
}

void AccessibilityManager::SetHighlights(
    const std::vector<gfx::Rect>& rects_in_screen,
    SkColor color) {
  AccessibilityFocusRingController::Get()->SetHighlights(rects_in_screen,
                                                         color);
  if (highlights_observer_for_test_ && rects_in_screen.size())
    highlights_observer_for_test_.Run();
}

void AccessibilityManager::HideHighlights() {
  AccessibilityFocusRingController::Get()->HideHighlights();
}

void AccessibilityManager::SetCaretBounds(const gfx::Rect& bounds_in_screen) {
  // For efficiency only send mojo IPCs to ash if the highlight is enabled.
  if (!IsCaretHighlightEnabled())
    return;

  AccessibilityController::Get()->SetCaretBounds(bounds_in_screen);

  if (caret_bounds_observer_for_test_)
    caret_bounds_observer_for_test_.Run(bounds_in_screen);
}

bool AccessibilityManager::GetStartupSoundEnabled() const {
  user_manager::UserManager* user_manager = user_manager::UserManager::Get();
  const user_manager::UserList& user_list = user_manager->GetPersistedUsers();
  if (user_list.empty())
    return false;

  user_manager::KnownUser known_user(g_browser_process->local_state());
  // |user_list| is sorted by last log in date. Take the most recent user to
  // log in.
  return known_user
      .FindBoolPath(user_list[0]->GetAccountId(), kUserStartupSoundEnabled)
      .value_or(false);
}

void AccessibilityManager::SetStartupSoundEnabled(bool value) const {
  if (!profile_)
    return;

  user_manager::KnownUser known_user(g_browser_process->local_state());
  known_user.SetBooleanPref(multi_user_util::GetAccountIdFromProfile(profile_),
                            kUserStartupSoundEnabled, value);
}

void AccessibilityManager::PreviewFlashNotification() const {
  AccessibilityController::Get()->PreviewFlashNotification();
}

const std::string AccessibilityManager::GetBluetoothBrailleDisplayAddress()
    const {
  user_manager::UserManager* user_manager = user_manager::UserManager::Get();
  const user_manager::UserList& user_list = user_manager->GetPersistedUsers();
  if (user_list.empty())
    return std::string();

  user_manager::KnownUser known_user(g_browser_process->local_state());
  // |user_list| is sorted by last log in date. Take the most recent user to
  // log in.
  const std::string* val = known_user.FindStringPath(
      user_list[0]->GetAccountId(), kUserBluetoothBrailleDisplayAddress);
  return val ? *val : std::string();
}

void AccessibilityManager::UpdateBluetoothBrailleDisplayAddress(
    const std::string& address) {
  CHECK(spoken_feedback_enabled());
  if (!profile_)
    return;

  user_manager::KnownUser known_user(g_browser_process->local_state());
  known_user.SetStringPref(multi_user_util::GetAccountIdFromProfile(profile_),
                           kUserBluetoothBrailleDisplayAddress, address);
  RestartBrltty(address);
}

void AccessibilityManager::SetProfileForTest(Profile* profile) {
  SetProfile(profile);
}

// static
void AccessibilityManager::SetBrailleControllerForTest(
    BrailleController* controller) {
  g_braille_controller_for_test = controller;
}

void AccessibilityManager::SetScreenDarkenObserverForTest(
    base::RepeatingCallback<void()> observer) {
  screen_darken_observer_for_test_ = observer;
}

void AccessibilityManager::SetOpenSettingsSubpageObserverForTest(
    base::RepeatingCallback<void()> observer) {
  open_settings_subpage_observer_for_test_ = observer;
}

void AccessibilityManager::SetFocusRingObserverForTest(
    base::RepeatingCallback<void()> observer) {
  AccessibilityFocusRingController::Get()->SetFocusRingObserverForTesting(
      observer);
}

void AccessibilityManager::SetHighlightsObserverForTest(
    base::RepeatingCallback<void()> observer) {
  highlights_observer_for_test_ = observer;
}

void AccessibilityManager::SetSelectToSpeakStateObserverForTest(
    base::RepeatingCallback<void()> observer) {
  select_to_speak_state_observer_for_test_ = observer;
}

void AccessibilityManager::SetCaretBoundsObserverForTest(
    base::RepeatingCallback<void(const gfx::Rect&)> observer) {
  caret_bounds_observer_for_test_ = observer;
}

void AccessibilityManager::SetMagnifierBoundsObserverForTest(
    base::RepeatingCallback<void()> observer) {
  magnifier_bounds_observer_for_test_ = observer;
}

void AccessibilityManager::SetSwitchAccessKeysForTest(
    const std::set<int>& action_keys,
    const std::string& pref_name) {
  ScopedDictPrefUpdate pref_update(profile_->GetPrefs(), pref_name);
  base::Value::List devices;
  devices.Append(kSwitchAccessInternalDevice);
  devices.Append(kSwitchAccessUsbDevice);
  devices.Append(kSwitchAccessBluetoothDevice);
  for (int key : action_keys) {
    const std::string& key_str = base::NumberToString(key);
    pref_update->SetByDottedPath(key_str, devices.Clone());
  }

  profile_->GetPrefs()->CommitPendingWrite();
}

bool AccessibilityManager::IsDisableAutoclickDialogVisibleForTest() {
  AutoclickController* controller = Shell::Get()->autoclick_controller();
  return controller->GetDisableDialogForTesting() != nullptr;  // IN-TEST
}

// Sends a panel action event to the Select-to-speak extension.
void AccessibilityManager::OnSelectToSpeakPanelAction(
    SelectToSpeakPanelAction action,
    double value) {
  if (!profile_)
    return;

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  base::Value::List event_args;
  event_args.Append(AccessibilityPrivateEnumForAction(action));
  if (value != 0.0) {
    event_args.Append(value);
  }

  auto event = std::make_unique<extensions::Event>(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_SELECT_TO_SPEAK_PANEL_ACTION,
      extensions::api::accessibility_private::OnSelectToSpeakPanelAction::
          kEventName,
      std::move(event_args));
  event_router->DispatchEventWithLazyListener(
      extension_misc::kSelectToSpeakExtensionId, std::move(event));
}

void AccessibilityManager::SendKeysCurrentlyDownToSelectToSpeak(
    const std::set<ui::KeyboardCode>& pressed_keys) {
  if (!profile_) {
    return;
  }

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  std::vector<int> key_codes;
  for (auto& key : pressed_keys) {
    key_codes.emplace_back(key);
  }
  auto event_args(extensions::api::accessibility_private::
                      OnSelectToSpeakKeysPressedChanged::Create(key_codes));

  auto event = std::make_unique<extensions::Event>(
      extensions::events::
          ACCESSIBILITY_PRIVATE_ON_SELECT_TO_SPEAK_KEYS_PRESSED_CHANGED,
      extensions::api::accessibility_private::
          OnSelectToSpeakKeysPressedChanged::kEventName,
      std::move(event_args));

  event_router->DispatchEventWithLazyListener(
      extension_misc::kSelectToSpeakExtensionId, std::move(event));
}

void AccessibilityManager::SendMouseEventToSelectToSpeak(
    ui::EventType type,
    const gfx::PointF& position) {
  if (!profile_) {
    return;
  }

  // Compare to ui::blink::MakeWebMouseEventFromUiEvent.
  extensions::api::accessibility_private::SyntheticMouseEventType event_type;
  switch (type) {
    case ui::EventType::kMousePressed:
      event_type = extensions::api::accessibility_private::
          SyntheticMouseEventType::kPress;
      break;
    case ui::EventType::kMouseReleased:
      event_type = extensions::api::accessibility_private::
          SyntheticMouseEventType::kRelease;
      break;
    case ui::EventType::kMouseMoved:
    case ui::EventType::kMouseEntered:
    case ui::EventType::kMouseExited:
    case ui::EventType::kMouseDragged:
      event_type = extensions::api::accessibility_private::
          SyntheticMouseEventType::kMove;
      break;
    case ui::EventType::kMousewheel:
      // Mouse wheel not handled.
      return;
    default:
      NOTIMPLEMENTED() << "Received unexpected event: "
                       << base::to_underlying(type);
      break;
  }

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  auto event_args(
      extensions::api::accessibility_private::OnSelectToSpeakMouseChanged::
          Create(event_type, position.x(), position.y()));

  auto event = std::make_unique<extensions::Event>(
      extensions::events::
          ACCESSIBILITY_PRIVATE_ON_SELECT_TO_SPEAK_MOUSE_CHANGED,
      extensions::api::accessibility_private::OnSelectToSpeakMouseChanged::
          kEventName,
      std::move(event_args));

  event_router->DispatchEventWithLazyListener(
      extension_misc::kSelectToSpeakExtensionId, std::move(event));
}

void AccessibilityManager::ShowChromeVoxTutorial() {
  if (!profile_)
    return;

  extensions::EventRouter* event_router =
      extensions::EventRouter::Get(profile_);

  auto event_args =
      extensions::api::accessibility_private::OnShowChromeVoxTutorial::Create();

  auto event = std::make_unique<extensions::Event>(
      extensions::events::ACCESSIBILITY_PRIVATE_ON_SHOW_CHROMEVOX_TUTORIAL,
      extensions::api::accessibility_private::OnShowChromeVoxTutorial::
          kEventName,
      std::move(event_args));

  event_router->DispatchEventWithLazyListener(
      extension_misc::kChromeVoxExtensionId, std::move(event));
}

bool AccessibilityManager::ShouldShowNetworkDictationDialog(
    const std::string& locale) {
  if (network_dictation_dialog_is_showing_)
    return false;

  if (profile_->GetPrefs()->GetBoolean(
          prefs::kDictationAcceleratorDialogHasBeenAccepted)) {
    return false;
  }

  if (!::features::IsDictationOfflineAvailable())
    return true;

  // Show the dialog for languages not supported by SODA.
  speech::SodaInstaller* soda_installer = speech::SodaInstaller::GetInstance();
  std::vector<std::string> supported_languages =
      soda_installer->GetAvailableLanguages();
  return !base::Contains(supported_languages, locale);
}

void AccessibilityManager::ShowNetworkDictationDialog() {
  network_dictation_dialog_is_showing_ = true;
  const std::u16string title =
      l10n_util::GetStringUTF16(IDS_ACCESSIBILITY_DICTATION_CONFIRMATION_TITLE);
  const std::u16string text =
      l10n_util::GetStringUTF16(IDS_ACCESSIBILITY_DICTATION_CONFIRMATION_TEXT);
  AccessibilityController::Get()->ShowConfirmationDialog(
      title, text, l10n_util::GetStringUTF16(IDS_APP_CONTINUE),
      l10n_util::GetStringUTF16(IDS_APP_CANCEL),
      base::BindOnce(&AccessibilityManager::OnNetworkDictationDialogAccepted,
                     base::Unretained(this)),
      base::BindOnce(&AccessibilityManager::OnNetworkDictationDialogDismissed,
                     base::Unretained(this)),
      base::BindOnce(&AccessibilityManager::OnNetworkDictationDialogDismissed,
                     base::Unretained(this)));
}

void AccessibilityManager::OnNetworkDictationDialogAccepted() {
  network_dictation_dialog_is_showing_ = false;
  profile_->GetPrefs()->SetBoolean(
      prefs::kDictationAcceleratorDialogHasBeenAccepted, true);
}

void AccessibilityManager::OnNetworkDictationDialogDismissed() {
  network_dictation_dialog_is_showing_ = false;
  SetDictationEnabled(false);
}

void AccessibilityManager::MaybeInstallSoda(const std::string& locale) {
  if (!::features::IsDictationOfflineAvailable())
    return;

  speech::SodaInstaller* soda_installer = speech::SodaInstaller::GetInstance();
  if (!base::Contains(
          speech::SodaInstaller::GetInstance()->GetAvailableLanguages(),
          locale)) {
    // Don't continue initializing SODA if this locale isn't supported.
    return;
  }

  const speech::LanguageCode language_code = speech::GetLanguageCode(locale);
  if (soda_installer->IsSodaInstalled(language_code) ||
      soda_installer->IsSodaDownloading(language_code)) {
    return;
  }

  if (!soda_observation_.IsObservingSource(soda_installer))
    soda_observation_.Observe(soda_installer);
  soda_installer->Init(profile_->GetPrefs(), g_browser_process->local_state());

  // If the installer was already initialized the language code might not have
  // started installing. Try again.
  if (!soda_installer->IsSodaDownloading(language_code))
    soda_installer->InstallLanguage(locale, g_browser_process->local_state());

  // Reset whether failed notification was shown. This ensures it is only shown
  // at most once per download attempt.
  soda_failed_notification_shown_ = false;
}

void AccessibilityManager::OnSodaInstallUpdated(int progress) {
  if (!::features::IsDictationOfflineAvailable())
    return;

  speech::SodaInstaller* soda_installer = speech::SodaInstaller::GetInstance();
  const std::string dictation_locale =
      profile_->GetPrefs()->GetString(prefs::kAccessibilityDictationLocale);
  // Update the Dictation button tray.
  // TODO(crbug.com/40802157): Ensure we use combined progress instead
  // of just the language pack progress.
  AccessibilityController::Get()
      ->UpdateDictationButtonOnSpeechRecognitionDownloadChanged(progress);

  if (soda_installer->IsSodaDownloading(GetDictationLanguageCode()))
    return;

  const std::optional<bool> offline_nudge =
      GetDictationOfflineNudgePrefForLocale(profile_, dictation_locale);
  // Check if this locale was downloaded and a nudge for it should be
  // shown to the user (the key is in kAccessibilityDictationLocale but the
  // value is false).
  if (offline_nudge && !offline_nudge.value() &&
      soda_installer->IsSodaInstalled(GetDictationLanguageCode())) {
    ShowDictationLanguageUpgradedNudge(dictation_locale);
  }
}

// SodaInstaller::Observer:
void AccessibilityManager::OnSodaInstalled(speech::LanguageCode language_code) {
  if (language_code != GetDictationLanguageCode())
    return;

  if (ShouldShowSodaSucceededNotificationForDictation())
    UpdateDictationNotification();
  OnSodaInstallUpdated(100);
}

void AccessibilityManager::OnSodaInstallError(
    speech::LanguageCode language_code,
    speech::SodaInstaller::ErrorCode error_code) {
  if (language_code != speech::LanguageCode::kNone &&
      language_code != GetDictationLanguageCode()) {
    return;
  }

  // Show the failed message if either the Dictation locale failed or the SODA
  // binary failed (encoded by LanguageCode::kNone).
  if (ShouldShowSodaFailedNotificationForDictation(language_code))
    UpdateDictationNotification();
  OnSodaInstallUpdated(0);
}

void AccessibilityManager::OnSodaProgress(speech::LanguageCode language_code,
                                          int progress) {
  if (language_code != speech::LanguageCode::kNone &&
      language_code != GetDictationLanguageCode()) {
    return;
  }

  OnSodaInstallUpdated(progress);
}

bool AccessibilityManager::ShouldShowSodaSucceededNotificationForDictation() {
  if (!::features::IsDictationOfflineAvailable() ||
      !dictation_triggered_by_user_ || !IsDictationEnabled()) {
    return false;
  }

  // Note: this function assumes that it's called after a successful SODA
  // download, either for the SODA binary or a language pack.
  // Both the SODA binary and the language pack matching the Dictation locale
  // need to be downloaded to return true.
  return speech::SodaInstaller::GetInstance()->IsSodaInstalled(
      GetDictationLanguageCode());
}

bool AccessibilityManager::ShouldShowSodaFailedNotificationForDictation(
    speech::LanguageCode language_code) {
  if (!::features::IsDictationOfflineAvailable() ||
      !dictation_triggered_by_user_ || !IsDictationEnabled()) {
    return false;
  }

  if (soda_failed_notification_shown_)
    return false;

  // Note: this function assumes that it's called after a SODA error, either for
  // the SODA binary or a language pack. Show the failed notification if:
  // 1. |language_code| == kNone (encodes that this was an error for the SODA
  // binary), or
  // 2. |language_code| matches the Dictation locale.
  return language_code == speech::LanguageCode::kNone ||
         language_code == GetDictationLanguageCode();
}

void AccessibilityManager::UpdateDictationNotification() {
  const std::string locale =
      profile_->GetPrefs()->GetString(prefs::kAccessibilityDictationLocale);
  // Get the display name of |locale| in the application locale.
  const std::u16string display_name = l10n_util::GetDisplayNameForLocale(
      /*locale=*/locale,
      /*display_locale=*/g_browser_process->GetApplicationLocale(),
      /*is_ui=*/true);

  bool soda_installed = false;
  if (::features::IsDictationOfflineAvailable()) {
    // Only access SodaInstaller if offline Dictation is available.
    soda_installed = speech::SodaInstaller::GetInstance()->IsSodaInstalled(
        GetDictationLanguageCode());
  }
  bool pumpkin_installed = dlc_installer_->IsPumpkinInstalled();

  // There are four possible states for the Dictation notification:
  // 1. Pumpkin installed, SODA installed
  // 2. Pumpkin installed, SODA not installed
  // 3. Pumpkin not installed, SODA installed
  // 4. Pumpkin not installed, SODA not installed
  DictationNotificationType type;
  std::string notification_shown_pref;
  if (pumpkin_installed && soda_installed) {
    type = DictationNotificationType::kAllDlcsDownloaded;
    notification_shown_pref =
        prefs::kDictationDlcSuccessNotificationHasBeenShown;
  } else if (pumpkin_installed && !soda_installed) {
    type = DictationNotificationType::kOnlyPumpkinDownloaded;
    notification_shown_pref =
        prefs::kDictationDlcOnlyPumpkinDownloadedNotificationHasBeenShown;
  } else if (!pumpkin_installed && soda_installed) {
    type = DictationNotificationType::kOnlySodaDownloaded;
    notification_shown_pref =
        prefs::kDictationDlcOnlySodaDownloadedNotificationHasBeenShown;
  } else {
    type = DictationNotificationType::kNoDlcsDownloaded;
    notification_shown_pref =
        prefs::kDictationNoDlcsDownloadedNotificationHasBeenShown;
  }

  if (profile_->GetPrefs()->GetBoolean(notification_shown_pref)) {
    // Do not show DLC notifications more than once.
    return;
  }

  profile_->GetPrefs()->SetBoolean(notification_shown_pref, true);
  AccessibilityController::Get()->ShowNotificationForDictation(type,
                                                               display_name);

  if (type == DictationNotificationType::kNoDlcsDownloaded)
    soda_failed_notification_shown_ = true;
}

speech::LanguageCode AccessibilityManager::GetDictationLanguageCode() {
  DCHECK(profile_);
  return speech::GetLanguageCode(
      profile_->GetPrefs()->GetString(prefs::kAccessibilityDictationLocale));
}

void AccessibilityManager::InstallFaceGazeAssets(
    InstallFaceGazeAssetsCallback callback) {
  DCHECK(!callback.is_null());
  if (!IsFaceGazeEnabled()) {
    std::move(callback).Run(std::nullopt);
    return;
  }

  install_facegaze_assets_callback_ = std::move(callback);
  dlc_installer_->MaybeInstall(
      AccessibilityDlcInstaller::DlcType::kFaceGazeAssets,
      base::BindOnce(&AccessibilityManager::OnFaceGazeAssetsInstalled,
                     weak_ptr_factory_.GetWeakPtr()),
      /*on_progress=*/base::DoNothing(),
      base::BindOnce(&AccessibilityManager::OnFaceGazeAssetsFailed,
                     weak_ptr_factory_.GetWeakPtr()));
}

void AccessibilityManager::OnFaceGazeAssetsInstalled(
    bool success,
    const std::string& root_path) {
  if (install_facegaze_assets_callback_.is_null()) {
    return;
  }

  if (!success) {
    std::move(install_facegaze_assets_callback_).Run(std::nullopt);
    return;
  }

  base::FilePath base_path = dlc_path_for_test_.empty()
                                 ? base::FilePath(root_path)
                                 : dlc_path_for_test_;

  AccessibilityController::Get()->ShowNotificationForFaceGaze(
      FaceGazeNotificationType::kDlcSucceeded);
  base::ThreadPool::PostTaskAndReplyWithResult(
      FROM_HERE, {base::MayBlock()},
      base::BindOnce(&CreateFaceGazeAssets, base::FilePath(base_path)),
      base::BindOnce(&AccessibilityManager::OnFaceGazeAssetsCreated,
                     weak_ptr_factory_.GetWeakPtr()));
}

void AccessibilityManager::OnFaceGazeAssetsFailed(std::string_view error) {
  AccessibilityController::Get()->ShowNotificationForFaceGaze(
      FaceGazeNotificationType::kDlcFailed);
  if (install_facegaze_assets_callback_.is_null()) {
    return;
  }

  std::move(install_facegaze_assets_callback_).Run(std::nullopt);
}

void AccessibilityManager::OnFaceGazeAssetsCreated(
    std::optional<FaceGazeAssets> assets) {
  if (install_facegaze_assets_callback_.is_null()) {
    return;
  }

  std::move(install_facegaze_assets_callback_).Run(std::move(assets));
}

void AccessibilityManager::InstallPumpkinForDictation(
    InstallPumpkinCallback callback) {
  DCHECK(!callback.is_null());
  if (!IsDictationEnabled()) {
    std::move(callback).Run(std::nullopt);
    return;
  }

  // Save `callback` and run it after the installation succeeds or fails.
  install_pumpkin_callback_ = std::move(callback);
  dlc_installer_->MaybeInstall(
      AccessibilityDlcInstaller::DlcType::kPumpkin,
      base::BindOnce(&AccessibilityManager::OnPumpkinInstalled,
                     weak_ptr_factory_.GetWeakPtr()),
      base::BindRepeating([](double progress) {}),
      base::BindOnce(&AccessibilityManager::OnPumpkinError,
                     weak_ptr_factory_.GetWeakPtr()));
}

void AccessibilityManager::OnPumpkinInstalled(bool success,
                                              const std::string& root_path) {
  if (install_pumpkin_callback_.is_null()) {
    return;
  }

  if (!success) {
    std::move(install_pumpkin_callback_).Run(std::nullopt);
    return;
  }

  is_pumpkin_installed_for_testing_ = success;
  base::FilePath base_pumpkin_path = dlc_path_for_test_.empty()
                                         ? base::FilePath(root_path)
                                         : dlc_path_for_test_;
  base::ThreadPool::PostTaskAndReplyWithResult(
      FROM_HERE, {base::MayBlock()},
      base::BindOnce(&CreatePumpkinData, base_pumpkin_path),
      base::BindOnce(&AccessibilityManager::OnPumpkinDataCreated,
                     weak_ptr_factory_.GetWeakPtr()));

  UpdateDictationNotification();
}

void AccessibilityManager::OnPumpkinDataCreated(
    std::optional<PumpkinData> data) {
  if (install_pumpkin_callback_.is_null()) {
    return;
  }

  std::move(install_pumpkin_callback_).Run(std::move(data));
}

void AccessibilityManager::OnPumpkinError(std::string_view error) {
  if (install_pumpkin_callback_.is_null()) {
    return;
  }

  std::move(install_pumpkin_callback_).Run(std::nullopt);
  is_pumpkin_installed_for_testing_ = false;

  UpdateDictationNotification();
}

void AccessibilityManager::GetTtsDlcContents(
    DlcType dlc,
    TtsVariant variant,
    GetTtsDlcContentsCallback callback) {
  static constexpr auto kTtsDlcTypeToLocale =
      base::MakeFixedFlatMap<DlcType, const char*>(
          {{DlcType::kTtsBnBd, "bn-bd"}, {DlcType::kTtsCsCz, "cs-cz"},
           {DlcType::kTtsDaDk, "da-dk"}, {DlcType::kTtsDeDe, "de-de"},
           {DlcType::kTtsElGr, "el-gr"}, {DlcType::kTtsEnAu, "en-au"},
           {DlcType::kTtsEnGb, "en-gb"}, {DlcType::kTtsEnUs, "en-us"},
           {DlcType::kTtsEsEs, "es-es"}, {DlcType::kTtsEsUs, "es-us"},
           {DlcType::kTtsFiFi, "fi-fi"}, {DlcType::kTtsFilPh, "fil-ph"},
           {DlcType::kTtsFrFr, "fr-fr"}, {DlcType::kTtsHiIn, "hi-in"},
           {DlcType::kTtsHuHu, "hu-hu"}, {DlcType::kTtsIdId, "id-id"},
           {DlcType::kTtsItIt, "it-it"}, {DlcType::kTtsJaJp, "ja-jp"},
           {DlcType::kTtsKmKh, "km-kh"}, {DlcType::kTtsKoKr, "ko-kr"},
           {DlcType::kTtsNbNo, "nb-no"}, {DlcType::kTtsNeNp, "ne-np"},
           {DlcType::kTtsNlNl, "nl-nl"}, {DlcType::kTtsPlPl, "pl-pl"},
           {DlcType::kTtsPtBr, "pt-br"}, {DlcType::kTtsPtPt, "pt-pt"},
           {DlcType::kTtsSiLk, "si-lk"}, {DlcType::kTtsSkSk, "sk-sk"},
           {DlcType::kTtsSvSe, "sv-se"}, {DlcType::kTtsThTh, "th-th"},
           {DlcType::kTtsTrTr, "tr-tr"}, {DlcType::kTtsUkUa, "uk-ua"},
           {DlcType::kTtsViVn, "vi-vn"}, {DlcType::kTtsYueHk, "yue-hk"}});

  // Use LanguagePackManager to get the path of the DLC.
  std::string locale = kTtsDlcTypeToLocale.find(dlc)->second;
  language_packs::LanguagePackManager::GetPackState(
      language_packs::kTtsFeatureId, locale,
      base::BindOnce(&AccessibilityManager::GetTtsDlcContentsOnPackState,
                     weak_ptr_factory_.GetWeakPtr(), std::move(variant),
                     std::move(callback)));
}

void AccessibilityManager::GetTtsDlcContentsOnPackState(
    TtsVariant variant,
    GetTtsDlcContentsCallback callback,
    const language_packs::PackResult& pack_result) {
  std::string file_name;
  switch (variant) {
    case TtsVariant::kLite:
      file_name = kTtsLiteFileName;
      break;
    case TtsVariant::kStandard:
      file_name = kTtsStandardFileName;
      break;
    case TtsVariant::kNone:
      NOTREACHED();
  }

  base::FilePath path;
  if (!dlc_path_for_test_.empty()) {
    // This path will only be set for tests. We need to skip the below install
    // check during tests because there is currently no way to set a DLC as
    // installed from a browsertest.
    path = dlc_path_for_test_.Append(file_name);
    base::ThreadPool::PostTaskAndReplyWithResult(
        FROM_HERE, {base::MayBlock()}, base::BindOnce(&ReadDlcFile, path),
        base::BindOnce(&OnReadDlcFile, std::move(callback)));
    return;
  }

  // Verify that the pack is installed.
  if (pack_result.pack_state !=
      language_packs::PackResult::StatusCode::kInstalled) {
    std::string error =
        "Error: TTS language pack with locale is not installed: " +
        pack_result.language_code;
    std::move(callback).Run(std::vector<uint8_t>(), error);
    return;
  }

  // Extract the path and read the file.
  path = base::FilePath(pack_result.path).Append(file_name);
  base::ThreadPool::PostTaskAndReplyWithResult(
      FROM_HERE, {base::MayBlock()}, base::BindOnce(&ReadDlcFile, path),
      base::BindOnce(&OnReadDlcFile, std::move(callback)));
}

void AccessibilityManager::SetDlcPathForTest(base::FilePath path) {
  dlc_path_for_test_ = std::move(path);
}

void AccessibilityManager::SendSyntheticMouseEvent(
    ui::EventType type,
    int flags,
    int changed_button_flags,
    gfx::Point location_in_screen,
    bool use_rewriters) {
  const display::Display& display =
      display::Screen::GetScreen()->GetDisplayNearestPoint(location_in_screen);
  auto* host = ash::GetWindowTreeHostForDisplay(display.id());
  if (!host) {
    return;
  }

  aura::Window* root_window = host->window();
  if (!root_window) {
    return;
  }

  aura::client::CursorClient* cursor_client =
      aura::client::GetCursorClient(root_window);

  bool is_mouse_events_enabled = cursor_client->IsMouseEventsEnabled();
  if (!is_mouse_events_enabled) {
    cursor_client->EnableMouseEvents();
  }

  ::wm::ConvertPointFromScreen(root_window, &location_in_screen);

  ui::MouseEvent synthetic_mouse_event(
      type, location_in_screen, location_in_screen, ui::EventTimeForNow(),
      flags, changed_button_flags);

  // Transforming the coordinates to the root will apply the screen scale factor
  // to the event's location and also the screen rotation degree.
  synthetic_mouse_event.UpdateForRootTransform(
      host->GetRootTransform(),
      host->GetRootTransformForLocalEventCoordinates());

  if (use_rewriters) {
    host->SendEventToSink(&synthetic_mouse_event);
  } else {
    host->DeliverEventToSink(&synthetic_mouse_event);
  }

  if (!is_mouse_events_enabled) {
    cursor_client->DisableMouseEvents();
  }
}

void AccessibilityManager::OnInputDeviceConfigurationChanged(
    uint8_t input_device_type) {
  if (input_device_type & ui::InputDeviceEventObserver::kKeyboard) {
    Shell::Get()->sticky_keys_controller()->SetFnModifierEnabled(
        Shell::Get()->keyboard_capability()->HasFunctionKeyOnAnyKeyboard());
  }
}
void AccessibilityManager::OnDeviceListsComplete() {
  Shell::Get()->sticky_keys_controller()->SetFnModifierEnabled(
      Shell::Get()->keyboard_capability()->HasFunctionKeyOnAnyKeyboard());
}

std::optional<ui::KeyboardCode>
AccessibilityManager::GetCaretBrowsingActionKey() {
  return AccessibilityController::Get()->GetCaretBrowsingActionKey();
}

}  // namespace ash