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chromium / chromium / src / e4a7c15e8a36a371fc03520fd57a3d1dad7a33af / . / chrome / browser / chromeos / accessibility / accessibility_manager.cc
blob: 231b3c781c5ac63edd328c12bd6f84e6cf65a72c [file] [log] [blame]
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <utility>
#include <vector>
#include "ash/accessibility/accessibility_controller.h"
#include "ash/public/cpp/ash_pref_names.h"
#include "ash/public/interfaces/accessibility_focus_ring_controller.mojom.h"
#include "ash/public/interfaces/constants.mojom.h"
#include "ash/root_window_controller.h"
#include "ash/shell.h"
#include "ash/sticky_keys/sticky_keys_controller.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/memory/ptr_util.h"
#include "base/memory/singleton.h"
#include "base/metrics/histogram_macros.h"
#include "base/path_service.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/task/post_task.h"
#include "base/values.h"
#include "chrome/browser/accessibility/accessibility_extension_api.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/chromeos/accessibility/accessibility_extension_loader.h"
#include "chrome/browser/chromeos/accessibility/dictation_chromeos.h"
#include "chrome/browser/chromeos/accessibility/magnification_manager.h"
#include "chrome/browser/chromeos/accessibility/select_to_speak_event_handler_delegate.h"
#include "chrome/browser/chromeos/accessibility/switch_access_event_handler_delegate.h"
#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
#include "chrome/browser/chromeos/profiles/profile_helper.h"
#include "chrome/browser/extensions/api/braille_display_private/stub_braille_controller.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/ash/multi_user/multi_user_util.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 "chromeos/audio/chromeos_sounds.h"
#include "chromeos/constants/chromeos_switches.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/power_manager_client.h"
#include "chromeos/dbus/upstart_client.h"
#include "components/language/core/browser/pref_names.h"
#include "components/prefs/pref_member.h"
#include "components/prefs/pref_service.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/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/tts_controller.h"
#include "content/public/browser/web_ui.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/service_manager_connection.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/extension_resource.h"
#include "extensions/common/host_id.h"
#include "mash/public/mojom/launchable.mojom.h"
#include "media/audio/sounds/sounds_manager.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "services/media_session/public/mojom/constants.mojom.h"
#include "services/service_manager/public/cpp/connector.h"
#include "ui/accessibility/accessibility_switches.h"
#include "ui/accessibility/ax_enum_util.h"
#include "ui/base/ime/chromeos/extension_ime_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_features.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
#include "url/gurl.h"
using content::BrowserThread;
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;
namespace chromeos {
namespace {
// 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";
static chromeos::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();
}
void EnableChromeVoxAfterSwitchAccessMetric(bool val) {
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosChromeVoxAfterSwitchAccess", val);
}
void EnableSwitchAccessAfterChromeVoxMetric(bool val) {
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosSwitchAccessAfterChromeVox", val);
}
// 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) {
chromeos::UpstartClient* client =
chromeos::DBusThreadManager::Get()->GetUpstartClient();
client->StopJob(kBrlttyUpstartJobName, EmptyVoidDBusMethodCallback());
std::vector<std::string> args;
if (address.empty())
return;
args.push_back(base::StringPrintf("ADDRESS=%s", address.c_str()));
client->StartJob(kBrlttyUpstartJobName, args, EmptyVoidDBusMethodCallback());
}
} // 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() override = default;
void OnWidgetClosing(views::Widget* widget) override {
CHECK_EQ(widget_, widget);
widget->RemoveObserver(this);
std::move(on_destroying_).Run();
// |this| should be deleted.
}
void OnWidgetDestroying(views::Widget* widget) override {
CHECK_EQ(widget_, widget);
widget->RemoveObserver(this);
std::move(on_destroying_).Run();
// |this| should be deleted.
}
private:
views::Widget* widget_;
base::OnceCallback<void()> on_destroying_;
DISALLOW_COPY_AND_ASSIGN(AccessibilityPanelWidgetObserver);
};
///////////////////////////////////////////////////////////////////////////////
// AccessibilityStatusEventDetails
AccessibilityStatusEventDetails::AccessibilityStatusEventDetails(
AccessibilityNotificationType notification_type,
bool enabled)
: notification_type(notification_type), enabled(enabled) {}
///////////////////////////////////////////////////////////////////////////////
//
// AccessibilityManager
// static
void AccessibilityManager::Initialize() {
CHECK(g_accessibility_manager == NULL);
g_accessibility_manager = new AccessibilityManager();
}
// static
void AccessibilityManager::Shutdown() {
CHECK(g_accessibility_manager);
delete g_accessibility_manager;
g_accessibility_manager = NULL;
}
// static
AccessibilityManager* AccessibilityManager::Get() {
return g_accessibility_manager;
}
// static
void AccessibilityManager::ShowAccessibilityHelp(Browser* browser) {
ShowSingletonTab(browser, GURL(chrome::kChromeAccessibilityHelpURL));
}
AccessibilityManager::AccessibilityManager()
: profile_(NULL),
spoken_feedback_enabled_(false),
select_to_speak_enabled_(false),
switch_access_enabled_(false),
braille_display_connected_(false),
scoped_braille_observer_(this),
braille_ime_current_(false),
chromevox_panel_(nullptr),
switch_access_panel_(nullptr),
extension_registry_observer_(this),
weak_ptr_factory_(this) {
notification_registrar_.Add(this,
chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE,
content::NotificationService::AllSources());
notification_registrar_.Add(this,
chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
content::NotificationService::AllSources());
notification_registrar_.Add(this, chrome::NOTIFICATION_SESSION_STARTED,
content::NotificationService::AllSources());
notification_registrar_.Add(this, chrome::NOTIFICATION_PROFILE_DESTROYED,
content::NotificationService::AllSources());
notification_registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
content::NotificationService::AllSources());
notification_registrar_.Add(this, content::NOTIFICATION_FOCUS_CHANGED_IN_PAGE,
content::NotificationService::AllSources());
input_method::InputMethodManager::Get()->AddObserver(this);
ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
media::SoundsManager* manager = media::SoundsManager::Get();
manager->Initialize(SOUND_SHUTDOWN,
bundle.GetRawDataResource(IDR_SOUND_SHUTDOWN_WAV));
manager->Initialize(
SOUND_SPOKEN_FEEDBACK_ENABLED,
bundle.GetRawDataResource(IDR_SOUND_SPOKEN_FEEDBACK_ENABLED_WAV));
manager->Initialize(
SOUND_SPOKEN_FEEDBACK_DISABLED,
bundle.GetRawDataResource(IDR_SOUND_SPOKEN_FEEDBACK_DISABLED_WAV));
manager->Initialize(SOUND_PASSTHROUGH,
bundle.GetRawDataResource(IDR_SOUND_PASSTHROUGH_WAV));
manager->Initialize(SOUND_EXIT_SCREEN,
bundle.GetRawDataResource(IDR_SOUND_EXIT_SCREEN_WAV));
manager->Initialize(SOUND_ENTER_SCREEN,
bundle.GetRawDataResource(IDR_SOUND_ENTER_SCREEN_WAV));
manager->Initialize(SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_HIGH,
bundle.GetRawDataResource(
IDR_SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_HIGH_WAV));
manager->Initialize(SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_LOW,
bundle.GetRawDataResource(
IDR_SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_LOW_WAV));
manager->Initialize(SOUND_TOUCH_TYPE,
bundle.GetRawDataResource(IDR_SOUND_TOUCH_TYPE_WAV));
manager->Initialize(SOUND_DICTATION_END,
bundle.GetRawDataResource(IDR_SOUND_DICTATION_END_WAV));
manager->Initialize(SOUND_DICTATION_START,
bundle.GetRawDataResource(IDR_SOUND_DICTATION_START_WAV));
manager->Initialize(
SOUND_DICTATION_CANCEL,
bundle.GetRawDataResource(IDR_SOUND_DICTATION_CANCEL_WAV));
manager->Initialize(SOUND_STARTUP,
bundle.GetRawDataResource(IDR_SOUND_STARTUP_WAV));
base::FilePath resources_path;
if (!base::PathService::Get(chrome::DIR_RESOURCES, &resources_path))
NOTREACHED();
chromevox_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
extension_misc::kChromeVoxExtensionId,
resources_path.Append(extension_misc::kChromeVoxExtensionPath),
base::BindRepeating(&AccessibilityManager::PostUnloadChromeVox,
weak_ptr_factory_.GetWeakPtr())));
select_to_speak_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
extension_misc::kSelectToSpeakExtensionId,
resources_path.Append(extension_misc::kSelectToSpeakExtensionPath),
base::BindRepeating(&AccessibilityManager::PostUnloadSelectToSpeak,
weak_ptr_factory_.GetWeakPtr())));
switch_access_loader_ = base::WrapUnique(new AccessibilityExtensionLoader(
extension_misc::kSwitchAccessExtensionId,
resources_path.Append(extension_misc::kSwitchAccessExtensionPath),
base::BindRepeating(&AccessibilityManager::PostUnloadSwitchAccess,
weak_ptr_factory_.GetWeakPtr())));
// Connect to ash's AccessibilityController interface.
content::ServiceManagerConnection::GetForProcess()
->GetConnector()
->BindInterface(ash::mojom::kServiceName, &accessibility_controller_);
// Connect to ash's AccessibilityFocusRingController interface.
content::ServiceManagerConnection::GetForProcess()
->GetConnector()
->BindInterface(ash::mojom::kServiceName,
&accessibility_focus_ring_controller_);
// Connect to the media session service.
content::ServiceManagerConnection::GetForProcess()
->GetConnector()
->BindInterface(media_session::mojom::kServiceName,
&audio_focus_manager_ptr_);
CrasAudioHandler::Get()->AddAudioObserver(this);
}
AccessibilityManager::~AccessibilityManager() {
CHECK(this == g_accessibility_manager);
AccessibilityStatusEventDetails details(ACCESSIBILITY_MANAGER_SHUTDOWN,
false);
NotifyAccessibilityStatusChanged(details);
CrasAudioHandler::Get()->RemoveAudioObserver(this);
input_method::InputMethodManager::Get()->RemoveObserver(this);
if (chromevox_panel_) {
chromevox_panel_->CloseNow();
chromevox_panel_ = nullptr;
}
}
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 (std::vector<Profile*>::iterator it = profiles.begin();
it != profiles.end(); ++it) {
PrefService* prefs = (*it)->GetPrefs();
if (prefs->GetBoolean(ash::prefs::kAccessibilityStickyKeysEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityLargeCursorEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilitySpokenFeedbackEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilitySelectToSpeakEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilitySwitchAccessEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityHighContrastEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityAutoclickEnabled) ||
prefs->GetBoolean(ash::prefs::kShouldAlwaysShowAccessibilityMenu) ||
prefs->GetBoolean(ash::prefs::kAccessibilityScreenMagnifierEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityVirtualKeyboardEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityMonoAudioEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityCaretHighlightEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityCursorHighlightEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityFocusHighlightEnabled) ||
prefs->GetBoolean(ash::prefs::kAccessibilityDictationEnabled) ||
prefs->GetBoolean(ash::prefs::kDockedMagnifierEnabled)) {
return true;
}
}
return false;
}
void AccessibilityManager::UpdateAlwaysShowMenuFromPref() {
if (!profile_)
return;
// TODO(crbug.com/594887): Fix for mash by moving pref into ash.
if (features::IsMultiProcessMash())
return;
// Update system tray menu visibility.
ash::Shell::Get()
->accessibility_controller()
->NotifyAccessibilityStatusChanged();
}
void AccessibilityManager::EnableLargeCursor(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityLargeCursorEnabled,
enabled);
pref_service->CommitPendingWrite();
}
void AccessibilityManager::OnLargeCursorChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_LARGE_CURSOR,
IsLargeCursorEnabled());
NotifyAccessibilityStatusChanged(details);
}
bool AccessibilityManager::IsLargeCursorEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityLargeCursorEnabled);
}
void AccessibilityManager::EnableStickyKeys(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityStickyKeysEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsStickyKeysEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityStickyKeysEnabled);
}
void AccessibilityManager::OnStickyKeysChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_STICKY_KEYS,
IsStickyKeysEnabled());
NotifyAccessibilityStatusChanged(details);
}
void AccessibilityManager::EnableSpokenFeedback(bool enabled) {
if (!profile_)
return;
if (enabled) {
if (IsSwitchAccessEnabled()) {
SetSwitchAccessEnabled(false);
EnableChromeVoxAfterSwitchAccessMetric(true);
} else {
EnableChromeVoxAfterSwitchAccessMetric(false);
}
}
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilitySpokenFeedbackEnabled,
enabled);
pref_service->CommitPendingWrite();
}
void AccessibilityManager::OnSpokenFeedbackChanged() {
if (!profile_)
return;
const bool enabled = profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilitySpokenFeedbackEnabled);
if (enabled) {
if (IsSwitchAccessEnabled()) {
LOG(ERROR) << "Switch Access and ChromeVox is not supported.";
LOG(WARNING) << "Disabling Switch Access.";
SetSwitchAccessEnabled(false);
EnableChromeVoxAfterSwitchAccessMetric(true);
} else {
EnableChromeVoxAfterSwitchAccessMetric(false);
}
}
user_manager::known_user::SetBooleanPref(
multi_user_util::GetAccountIdFromProfile(profile_),
kUserSpokenFeedbackEnabled, enabled);
if (enabled) {
chromevox_loader_->SetProfile(
profile_, base::Bind(&AccessibilityManager::PostSwitchChromeVoxProfile,
weak_ptr_factory_.GetWeakPtr()));
}
if (spoken_feedback_enabled_ == enabled)
return;
spoken_feedback_enabled_ = enabled;
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK,
enabled);
NotifyAccessibilityStatusChanged(details);
if (enabled) {
chromevox_loader_->Load(profile_,
base::Bind(&AccessibilityManager::PostLoadChromeVox,
weak_ptr_factory_.GetWeakPtr()));
} else {
chromevox_loader_->Unload();
}
UpdateBrailleImeState();
}
bool AccessibilityManager::IsSpokenFeedbackEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilitySpokenFeedbackEnabled);
}
void AccessibilityManager::EnableHighContrast(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityHighContrastEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsHighContrastEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityHighContrastEnabled);
}
void AccessibilityManager::OnHighContrastChanged() {
AccessibilityStatusEventDetails details(
ACCESSIBILITY_TOGGLE_HIGH_CONTRAST_MODE, 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) {
accessibility_controller_->SetFocusHighlightRect(bounds_in_screen);
}
bool AccessibilityManager::PlayEarcon(int sound_key, PlaySoundOption option) {
DCHECK(sound_key < chromeos::SOUND_COUNT);
base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
if (cl->HasSwitch(kAshDisableSystemSounds))
return false;
if (option == PlaySoundOption::ONLY_IF_SPOKEN_FEEDBACK_ENABLED &&
!IsSpokenFeedbackEnabled()) {
return false;
}
return media::SoundsManager::Get()->Play(sound_key);
}
void AccessibilityManager::OnTwoFingerTouchStart() {
if (!profile())
return;
extensions::EventRouter* event_router =
extensions::EventRouter::Get(profile());
auto event_args = std::make_unique<base::ListValue>();
auto event = std::make_unique<extensions::Event>(
extensions::events::ACCESSIBILITY_PRIVATE_ON_TWO_FINGER_TOUCH_START,
extensions::api::accessibility_private::OnTwoFingerTouchStart::kEventName,
std::move(event_args));
event_router->BroadcastEvent(std::move(event));
}
void AccessibilityManager::OnTwoFingerTouchStop() {
if (!profile())
return;
extensions::EventRouter* event_router =
extensions::EventRouter::Get(profile());
auto event_args = std::make_unique<base::ListValue>();
auto event = std::make_unique<extensions::Event>(
extensions::events::ACCESSIBILITY_PRIVATE_ON_TWO_FINGER_TOUCH_STOP,
extensions::api::accessibility_private::OnTwoFingerTouchStop::kEventName,
std::move(event_args));
event_router->BroadcastEvent(std::move(event));
}
bool AccessibilityManager::ShouldToggleSpokenFeedbackViaTouch() {
#if 1
// Temporarily disabling this feature until UI feedback is fixed.
// http://crbug.com/662501
return false;
#else
policy::BrowserPolicyConnectorChromeOS* connector =
g_browser_process->platform_part()->browser_policy_connector_chromeos();
if (!connector)
return false;
if (!connector->IsEnterpriseManaged())
return false;
const policy::DeviceCloudPolicyManagerChromeOS* const
device_cloud_policy_manager = connector->GetDeviceCloudPolicyManager();
if (!device_cloud_policy_manager)
return false;
if (!device_cloud_policy_manager->IsRemoraRequisition())
return false;
KioskAppManager* manager = KioskAppManager::Get();
KioskAppManager::App app;
CHECK(manager->GetApp(manager->GetAutoLaunchApp(), &app));
return app.was_auto_launched_with_zero_delay;
#endif
}
bool AccessibilityManager::PlaySpokenFeedbackToggleCountdown(int tick_count) {
return media::SoundsManager::Get()->Play(
tick_count % 2 ? SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_HIGH
: SOUND_SPOKEN_FEEDBACK_TOGGLE_COUNTDOWN_LOW);
}
void AccessibilityManager::HandleAccessibilityGesture(
ax::mojom::Gesture gesture) {
extensions::EventRouter* event_router =
extensions::EventRouter::Get(profile());
std::unique_ptr<base::ListValue> event_args =
std::make_unique<base::ListValue>();
event_args->AppendString(ui::ToString(gesture));
std::unique_ptr<extensions::Event> event(new 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 : ash::RootWindowController::root_window_controllers())
rwc->SetTouchAccessibilityAnchorPoint(anchor_point);
}
void AccessibilityManager::EnableAutoclick(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityAutoclickEnabled, enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsAutoclickEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityAutoclickEnabled);
}
void AccessibilityManager::EnableVirtualKeyboard(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityVirtualKeyboardEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsVirtualKeyboardEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityVirtualKeyboardEnabled);
}
void AccessibilityManager::OnVirtualKeyboardChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_VIRTUAL_KEYBOARD,
IsVirtualKeyboardEnabled());
NotifyAccessibilityStatusChanged(details);
}
void AccessibilityManager::EnableMonoAudio(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityMonoAudioEnabled, enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsMonoAudioEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityMonoAudioEnabled);
}
void AccessibilityManager::OnMonoAudioChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_MONO_AUDIO,
IsMonoAudioEnabled());
NotifyAccessibilityStatusChanged(details);
}
void AccessibilityManager::SetDarkenScreen(bool darken) {
accessibility_controller_->SetDarkenScreen(darken);
}
void AccessibilityManager::SetCaretHighlightEnabled(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityCaretHighlightEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsCaretHighlightEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityCaretHighlightEnabled);
}
void AccessibilityManager::OnCaretHighlightChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_CARET_HIGHLIGHT,
IsCaretHighlightEnabled());
NotifyAccessibilityStatusChanged(details);
}
void AccessibilityManager::SetCursorHighlightEnabled(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityCursorHighlightEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsCursorHighlightEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityCursorHighlightEnabled);
}
void AccessibilityManager::OnCursorHighlightChanged() {
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_CURSOR_HIGHLIGHT,
IsCursorHighlightEnabled());
NotifyAccessibilityStatusChanged(details);
}
bool AccessibilityManager::IsDictationEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilityDictationEnabled);
}
void AccessibilityManager::SetFocusHighlightEnabled(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilityFocusHighlightEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsFocusHighlightEnabled() const {
return profile_ && profile_->GetPrefs()->GetBoolean(
ash::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(ACCESSIBILITY_TOGGLE_FOCUS_HIGHLIGHT,
enabled);
NotifyAccessibilityStatusChanged(details);
}
void AccessibilityManager::SetSelectToSpeakEnabled(bool enabled) {
if (!profile_)
return;
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::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<base::ListValue> event_args =
std::make_unique<base::ListValue>();
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,
std::move(event_args)));
event_router->DispatchEventWithLazyListener(
extension_misc::kSelectToSpeakExtensionId, std::move(event));
}
void AccessibilityManager::OnSelectToSpeakStateChanged(
ash::mojom::SelectToSpeakState state) {
accessibility_controller_->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(
ash::prefs::kAccessibilitySelectToSpeakEnabled);
if (enabled)
select_to_speak_loader_->SetProfile(profile_, base::Closure());
if (select_to_speak_enabled_ == enabled)
return;
select_to_speak_enabled_ = enabled;
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_SELECT_TO_SPEAK,
enabled);
NotifyAccessibilityStatusChanged(details);
if (enabled) {
select_to_speak_loader_->Load(profile_, base::Closure() /* done_cb */);
// Construct a delegate to connect SelectToSpeak and its EventHandler in
// ash.
select_to_speak_event_handler_delegate_ =
std::make_unique<chromeos::SelectToSpeakEventHandlerDelegate>();
} else {
select_to_speak_loader_->Unload();
select_to_speak_event_handler_delegate_.reset();
}
}
void AccessibilityManager::SetSwitchAccessEnabled(bool enabled) {
if (!profile_)
return;
if (enabled) {
if (IsSpokenFeedbackEnabled()) {
LOG(ERROR) << "Enabling Switch Access with ChromeVox is not supported.";
EnableSwitchAccessAfterChromeVoxMetric(true);
return;
}
EnableSwitchAccessAfterChromeVoxMetric(false);
}
PrefService* pref_service = profile_->GetPrefs();
pref_service->SetBoolean(ash::prefs::kAccessibilitySwitchAccessEnabled,
enabled);
pref_service->CommitPendingWrite();
}
bool AccessibilityManager::IsSwitchAccessEnabled() const {
return switch_access_enabled_;
}
void AccessibilityManager::UpdateSwitchAccessFromPref() {
if (!profile_)
return;
const bool enabled = profile_->GetPrefs()->GetBoolean(
ash::prefs::kAccessibilitySwitchAccessEnabled);
// The Switch Access setting is behind a flag. Don't enable the feature
// even if the preference is enabled, if the flag isn't also set.
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(
::switches::kEnableExperimentalAccessibilitySwitchAccess)) {
if (enabled) {
LOG(WARNING) << "Switch access enabled but experimental accessibility "
<< "switch access flag is not set.";
}
return;
}
if (enabled) {
if (IsSpokenFeedbackEnabled()) {
LOG(ERROR) << "Enabling Switch Access with ChromeVox is not supported.";
SetSwitchAccessEnabled(false);
EnableSwitchAccessAfterChromeVoxMetric(true);
return;
}
EnableSwitchAccessAfterChromeVoxMetric(false);
switch_access_loader_->SetProfile(profile_, base::RepeatingClosure());
}
if (switch_access_enabled_ == enabled)
return;
switch_access_enabled_ = enabled;
AccessibilityStatusEventDetails details(ACCESSIBILITY_TOGGLE_SWITCH_ACCESS,
enabled);
NotifyAccessibilityStatusChanged(details);
if (enabled) {
// Construct a delegate to connect Switch Access and its EventHandler in
// ash. Do this before loading Switch Access so the keys_to_capture will
// be properly set.
switch_access_event_handler_delegate_ =
std::make_unique<SwitchAccessEventHandlerDelegate>();
switch_access_loader_->Load(
profile_,
base::BindRepeating(&AccessibilityManager::PostLoadSwitchAccess,
weak_ptr_factory_.GetWeakPtr()));
} else {
switch_access_loader_->Unload();
switch_access_event_handler_delegate_.reset(nullptr);
}
}
bool AccessibilityManager::IsBrailleDisplayConnected() const {
return braille_display_connected_;
}
void AccessibilityManager::CheckBrailleState() {
BrailleController* braille_controller = GetBrailleController();
if (!scoped_braille_observer_.IsObserving(braille_controller))
scoped_braille_observer_.Add(braille_controller);
base::PostTaskWithTraitsAndReplyWithResult(
FROM_HERE, {BrowserThread::IO},
base::Bind(&BrailleController::GetDisplayState,
base::Unretained(braille_controller)),
base::Bind(&AccessibilityManager::ReceiveBrailleDisplayState,
weak_ptr_factory_.GetWeakPtr()));
}
void AccessibilityManager::ReceiveBrailleDisplayState(
std::unique_ptr<extensions::api::braille_display_private::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<base::StringPiece> preload_engines = base::SplitStringPiece(
preload_engines_str, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
std::vector<base::StringPiece>::iterator it =
std::find(preload_engines.begin(), preload_engines.end(),
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;
}
// Overridden from InputMethodManager::Observer.
void AccessibilityManager::InputMethodChanged(
input_method::InputMethodManager* manager,
Profile* /* profile */,
bool show_message) {
// Sticky keys is implemented only in ash.
// TODO(crbug.com/678820): Mash support.
if (!features::IsMultiProcessMash()) {
ash::Shell::Get()->sticky_keys_controller()->SetModifiersEnabled(
manager->IsISOLevel5ShiftUsedByCurrentInputMethod(),
manager->IsAltGrUsedByCurrentInputMethod());
}
const chromeos::input_method::InputMethodDescriptor descriptor =
manager->GetActiveIMEState()->GetCurrentInputMethod();
braille_ime_current_ =
(descriptor.id() == extension_ime_util::kBrailleImeEngineId);
}
void AccessibilityManager::OnActiveOutputNodeChanged() {
if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
chromeos::switches::kFirstExecAfterBoot))
return;
AudioDevice device;
CrasAudioHandler::Get()->GetPrimaryActiveOutputDevice(&device);
if (device.type == AudioDeviceType::AUDIO_TYPE_OTHER)
return;
CrasAudioHandler::Get()->RemoveAudioObserver(this);
if (GetStartupSoundEnabled()) {
PlayEarcon(SOUND_STARTUP, PlaySoundOption::ALWAYS);
return;
}
const auto& account_ids = user_manager::known_user::GetKnownAccountIds();
for (size_t i = 0; i < account_ids.size(); ++i) {
bool val;
if (user_manager::known_user::GetBooleanPref(
account_ids[i], kUserSpokenFeedbackEnabled, &val) &&
val) {
PlayEarcon(SOUND_STARTUP, PlaySoundOption::ALWAYS);
break;
}
}
}
void AccessibilityManager::SetProfile(Profile* profile) {
// Do nothing if this is called for the current profile. This can happen. For
// example, ChromeSessionManager fires both
// NOTIFICATION_LOGIN_USER_PROFILE_PREPARED and NOTIFICATION_SESSION_STARTED,
// and we are observing both events.
if (profile_ == profile)
return;
pref_change_registrar_.reset();
local_state_pref_change_registrar_.reset();
// Clear all dictation state on profile change.
dictation_.reset();
if (profile) {
// TODO(yoshiki): Move following code to PrefHandler.
pref_change_registrar_.reset(new PrefChangeRegistrar);
pref_change_registrar_->Init(profile->GetPrefs());
pref_change_registrar_->Add(
ash::prefs::kShouldAlwaysShowAccessibilityMenu,
base::Bind(&AccessibilityManager::UpdateAlwaysShowMenuFromPref,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityLargeCursorEnabled,
base::Bind(&AccessibilityManager::OnLargeCursorChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityLargeCursorDipSize,
base::Bind(&AccessibilityManager::OnLargeCursorChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityStickyKeysEnabled,
base::Bind(&AccessibilityManager::OnStickyKeysChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilitySpokenFeedbackEnabled,
base::Bind(&AccessibilityManager::OnSpokenFeedbackChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityHighContrastEnabled,
base::Bind(&AccessibilityManager::OnHighContrastChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityVirtualKeyboardEnabled,
base::Bind(&AccessibilityManager::OnVirtualKeyboardChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityMonoAudioEnabled,
base::Bind(&AccessibilityManager::OnMonoAudioChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityCaretHighlightEnabled,
base::Bind(&AccessibilityManager::OnCaretHighlightChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityCursorHighlightEnabled,
base::Bind(&AccessibilityManager::OnCursorHighlightChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilityFocusHighlightEnabled,
base::Bind(&AccessibilityManager::OnFocusHighlightChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilitySelectToSpeakEnabled,
base::Bind(&AccessibilityManager::OnSelectToSpeakChanged,
base::Unretained(this)));
pref_change_registrar_->Add(
ash::prefs::kAccessibilitySwitchAccessEnabled,
base::Bind(&AccessibilityManager::UpdateSwitchAccessFromPref,
base::Unretained(this)));
local_state_pref_change_registrar_.reset(new PrefChangeRegistrar);
local_state_pref_change_registrar_->Init(g_browser_process->local_state());
local_state_pref_change_registrar_->Add(
language::prefs::kApplicationLocale,
base::Bind(&AccessibilityManager::OnLocaleChanged,
base::Unretained(this)));
content::BrowserAccessibilityState::GetInstance()->AddHistogramCallback(
base::Bind(&AccessibilityManager::UpdateChromeOSAccessibilityHistograms,
base::Unretained(this)));
extensions::ExtensionRegistry* registry =
extensions::ExtensionRegistry::Get(profile);
if (!extension_registry_observer_.IsObserving(registry))
extension_registry_observer_.Add(registry);
}
bool had_profile = (profile_ != NULL);
profile_ = profile;
if (!had_profile && profile)
CheckBrailleState();
else
UpdateBrailleImeState();
UpdateAlwaysShowMenuFromPref();
UpdateSwitchAccessFromPref();
// TODO(warx): reconcile to ash once the prefs registration above is moved to
// ash.
OnSpokenFeedbackChanged();
OnSelectToSpeakChanged();
}
void AccessibilityManager::ActiveUserChanged(
const user_manager::User* active_user) {
if (active_user && active_user->is_profile_created())
SetProfile(ProfileManager::GetActiveUserProfile());
}
base::TimeDelta AccessibilityManager::PlayShutdownSound() {
if (!PlayEarcon(SOUND_SHUTDOWN,
PlaySoundOption::ONLY_IF_SPOKEN_FEEDBACK_ENABLED)) {
return base::TimeDelta();
}
return media::SoundsManager::Get()->GetDuration(SOUND_SHUTDOWN);
}
std::unique_ptr<AccessibilityStatusSubscription>
AccessibilityManager::RegisterCallback(const AccessibilityStatusCallback& cb) {
return callback_list_.Add(cb);
}
void AccessibilityManager::NotifyAccessibilityStatusChanged(
const AccessibilityStatusEventDetails& details) {
callback_list_.Notify(details);
// TODO(crbug.com/594887): Fix for mash by moving pref into ash.
if (features::IsMultiProcessMash())
return;
if (details.notification_type == ACCESSIBILITY_TOGGLE_DICTATION) {
ash::Shell::Get()->accessibility_controller()->SetDictationActive(
details.enabled);
ash::Shell::Get()
->accessibility_controller()
->NotifyAccessibilityStatusChanged();
return;
}
// 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 == ACCESSIBILITY_TOGGLE_SCREEN_MAGNIFIER ||
details.notification_type == ACCESSIBILITY_TOGGLE_DICTATION) {
ash::Shell::Get()
->accessibility_controller()
->NotifyAccessibilityStatusChanged();
}
}
void AccessibilityManager::UpdateChromeOSAccessibilityHistograms() {
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosSpokenFeedback",
IsSpokenFeedbackEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosHighContrast",
IsHighContrastEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosVirtualKeyboard",
IsVirtualKeyboardEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosStickyKeys", IsStickyKeysEnabled());
if (MagnificationManager::Get()) {
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosScreenMagnifier",
MagnificationManager::Get()->IsMagnifierEnabled());
}
if (profile_) {
const PrefService* const prefs = profile_->GetPrefs();
bool large_cursor_enabled =
prefs->GetBoolean(ash::prefs::kAccessibilityLargeCursorEnabled);
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosLargeCursor",
large_cursor_enabled);
if (large_cursor_enabled) {
UMA_HISTOGRAM_COUNTS_100(
"Accessibility.CrosLargeCursorSize",
prefs->GetInteger(ash::prefs::kAccessibilityLargeCursorDipSize));
}
UMA_HISTOGRAM_BOOLEAN(
"Accessibility.CrosAlwaysShowA11yMenu",
prefs->GetBoolean(ash::prefs::kShouldAlwaysShowAccessibilityMenu));
bool autoclick_enabled =
prefs->GetBoolean(ash::prefs::kAccessibilityAutoclickEnabled);
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosAutoclick", autoclick_enabled);
}
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosCaretHighlight",
IsCaretHighlightEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosCursorHighlight",
IsCursorHighlightEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosDictation", IsDictationEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosFocusHighlight",
IsFocusHighlightEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosSelectToSpeak",
IsSelectToSpeakEnabled());
UMA_HISTOGRAM_BOOLEAN("Accessibility.CrosSwitchAccess",
IsSwitchAccessEnabled());
}
void AccessibilityManager::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_LOGIN_OR_LOCK_WEBUI_VISIBLE: {
// Update |profile_| when entering the login screen.
Profile* profile = ProfileManager::GetActiveUserProfile();
if (ProfileHelper::IsSigninProfile(profile))
SetProfile(profile);
break;
}
case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED:
// Update |profile_| when login user profile is prepared.
// NOTIFICATION_SESSION_STARTED is not fired from UserSessionManager, but
// profile may be changed by UserSessionManager in OOBE flow.
SetProfile(ProfileManager::GetActiveUserProfile());
break;
case chrome::NOTIFICATION_SESSION_STARTED:
// Update |profile_| when entering a session.
SetProfile(ProfileManager::GetActiveUserProfile());
// Add a session state observer to be able to monitor session changes.
if (!session_state_observer_.get())
session_state_observer_.reset(
new user_manager::ScopedUserSessionStateObserver(this));
break;
case chrome::NOTIFICATION_PROFILE_DESTROYED: {
// Update |profile_| when exiting a session or shutting down.
Profile* profile = content::Source<Profile>(source).ptr();
if (profile_ == profile)
SetProfile(NULL);
break;
}
case chrome::NOTIFICATION_APP_TERMINATING: {
app_terminating_ = true;
break;
}
case content::NOTIFICATION_FOCUS_CHANGED_IN_PAGE: {
// Avoid unnecessary mojo IPC to ash when focus highlight feature is not
// enabled.
if (!IsFocusHighlightEnabled())
return;
content::FocusedNodeDetails* node_details =
content::Details<content::FocusedNodeDetails>(details).ptr();
accessibility_controller_->SetFocusHighlightRect(
node_details->node_bounds_in_screen);
break;
}
}
}
void AccessibilityManager::OnBrailleDisplayStateChanged(
const DisplayState& display_state) {
braille_display_connected_ = display_state.available;
accessibility_controller_->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::KEY_COMMAND_DOTS) &&
!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();
}
void AccessibilityManager::OnShutdown(extensions::ExtensionRegistry* registry) {
extension_registry_observer_.Remove(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.
// Maybe start brltty, if we have a bluetooth device stored for connection.
const std::string& address = GetBluetoothBrailleDisplayAddress();
if (!address.empty())
RestartBrltty(address);
PlayEarcon(SOUND_SPOKEN_FEEDBACK_ENABLED, PlaySoundOption::ALWAYS);
extensions::EventRouter* event_router =
extensions::EventRouter::Get(profile_);
std::unique_ptr<base::ListValue> event_args =
std::make_unique<base::ListValue>();
std::unique_ptr<extensions::Event> event(new extensions::Event(
extensions::events::ACCESSIBILITY_PRIVATE_ON_INTRODUCE_CHROME_VOX,
extensions::api::accessibility_private::OnIntroduceChromeVox::kEventName,
std::move(event_args)));
event_router->DispatchEventWithLazyListener(
extension_misc::kChromeVoxExtensionId, std::move(event));
if (!chromevox_panel_) {
chromevox_panel_ = new ChromeVoxPanel(profile_);
chromevox_panel_widget_observer_.reset(new AccessibilityPanelWidgetObserver(
chromevox_panel_->GetWidget(),
base::BindOnce(&AccessibilityManager::OnChromeVoxPanelDestroying,
base::Unretained(this))));
}
audio_focus_manager_ptr_->SetEnforcementMode(
media_session::mojom::EnforcementMode::kSingleSession);
}
void AccessibilityManager::PostUnloadChromeVox() {
// Do any teardown work needed immediately after ChromeVox actually unloads.
// Stop brltty.
chromeos::DBusThreadManager::Get()->GetUpstartClient()->StopJob(
kBrlttyUpstartJobName, EmptyVoidDBusMethodCallback());
PlayEarcon(SOUND_SPOKEN_FEEDBACK_DISABLED, PlaySoundOption::ALWAYS);
// Clear the accessibility focus ring.
SetFocusRing(std::vector<gfx::Rect>(),
ash::mojom::FocusRingBehavior::PERSIST_FOCUS_RING,
extension_misc::kChromeVoxExtensionId);
if (chromevox_panel_) {
chromevox_panel_->Close();
chromevox_panel_ = nullptr;
}
// In case the user darkened the screen, undarken it now.
SetDarkenScreen(false);
// Stop speech.
content::TtsController::GetInstance()->Stop();
audio_focus_manager_ptr_->SetEnforcementMode(
media_session::mojom::EnforcementMode::kDefault);
}
void AccessibilityManager::PostSwitchChromeVoxProfile() {
if (chromevox_panel_) {
chromevox_panel_->CloseNow();
chromevox_panel_ = nullptr;
}
chromevox_panel_ = new ChromeVoxPanel(profile_);
chromevox_panel_widget_observer_.reset(new AccessibilityPanelWidgetObserver(
chromevox_panel_->GetWidget(),
base::BindOnce(&AccessibilityManager::OnChromeVoxPanelDestroying,
base::Unretained(this))));
}
void AccessibilityManager::OnChromeVoxPanelDestroying() {
chromevox_panel_widget_observer_.reset(nullptr);
chromevox_panel_ = nullptr;
}
void AccessibilityManager::PostUnloadSelectToSpeak() {
// Do any teardown work needed immediately after Select-to-Speak actually
// unloads.
// Clear the accessibility focus ring and highlight.
HideFocusRing(extension_misc::kSelectToSpeakExtensionId);
HideHighlights();
// Stop speech.
content::TtsController::GetInstance()->Stop();
}
void AccessibilityManager::PostLoadSwitchAccess() {
if (!switch_access_panel_) {
switch_access_panel_ = new SwitchAccessPanel(profile_);
switch_access_panel_widget_observer_.reset(
new AccessibilityPanelWidgetObserver(
switch_access_panel_->GetWidget(),
base::BindOnce(&AccessibilityManager::OnSwitchAccessPanelDestroying,
base::Unretained(this))));
}
}
void AccessibilityManager::PostUnloadSwitchAccess() {
// Do any teardown work needed immediately after SwitchAccess actually
// unloads.
// Clear the accessibility focus ring.
HideFocusRing(extension_misc::kSwitchAccessExtensionId);
// Close the context menu
if (switch_access_panel_) {
switch_access_panel_->Close();
switch_access_panel_ = nullptr;
}
}
void AccessibilityManager::OnSwitchAccessPanelDestroying() {
switch_access_panel_widget_observer_.reset(nullptr);
switch_access_panel_ = nullptr;
}
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_observer_.IsObserving(registry) && !id.empty())
extension_registry_observer_.Add(registry);
}
void AccessibilityManager::HideSwitchAccessMenu() {
switch_access_panel_->Hide();
}
void AccessibilityManager::ShowSwitchAccessMenu(const gfx::Rect& element_bounds,
int menu_width,
int menu_height) {
switch_access_panel_->Show(element_bounds, menu_width, menu_height);
}
bool AccessibilityManager::ToggleDictation() {
if (!profile_)
return false;
if (!dictation_.get())
dictation_ = std::make_unique<DictationChromeos>(profile_);
return dictation_->OnToggleDictation();
}
void AccessibilityManager::SetFocusRingColor(SkColor color,
std::string caller_id) {
accessibility_focus_ring_controller_->SetFocusRingColor(color, caller_id);
}
void AccessibilityManager::ResetFocusRingColor(std::string caller_id) {
accessibility_focus_ring_controller_->ResetFocusRingColor(caller_id);
}
void AccessibilityManager::SetFocusRing(
const std::vector<gfx::Rect>& rects_in_screen,
ash::mojom::FocusRingBehavior focus_ring_behavior,
std::string caller_id) {
accessibility_focus_ring_controller_->SetFocusRing(
rects_in_screen, focus_ring_behavior, caller_id);
if (focus_ring_observer_for_test_)
focus_ring_observer_for_test_.Run();
}
void AccessibilityManager::HideFocusRing(std::string caller_id) {
accessibility_focus_ring_controller_->HideFocusRing(caller_id);
if (focus_ring_observer_for_test_)
focus_ring_observer_for_test_.Run();
}
void AccessibilityManager::SetHighlights(
const std::vector<gfx::Rect>& rects_in_screen,
SkColor color) {
accessibility_focus_ring_controller_->SetHighlights(rects_in_screen, color);
}
void AccessibilityManager::HideHighlights() {
accessibility_focus_ring_controller_->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;
accessibility_controller_->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->GetUsers();
if (user_list.empty())
return false;
// |user_list| is sorted by last log in date. Take the most recent user to log
// in.
bool val;
return user_manager::known_user::GetBooleanPref(
user_list[0]->GetAccountId(), kUserStartupSoundEnabled, &val) &&
val;
}
void AccessibilityManager::SetStartupSoundEnabled(bool value) const {
if (!profile_)
return;
user_manager::known_user::SetBooleanPref(
multi_user_util::GetAccountIdFromProfile(profile_),
kUserStartupSoundEnabled, value);
}
const std::string AccessibilityManager::GetBluetoothBrailleDisplayAddress()
const {
user_manager::UserManager* user_manager = user_manager::UserManager::Get();
const user_manager::UserList& user_list = user_manager->GetUsers();
if (user_list.empty())
return std::string();
// |user_list| is sorted by last log in date. Take the most recent user to log
// in.
std::string val;
return user_manager::known_user::GetStringPref(
user_list[0]->GetAccountId(), kUserBluetoothBrailleDisplayAddress,
&val)
? val
: std::string();
}
void AccessibilityManager::UpdateBluetoothBrailleDisplayAddress(
const std::string& address) {
CHECK(spoken_feedback_enabled_);
if (!profile_)
return;
user_manager::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::FlushForTesting() {
accessibility_controller_.FlushForTesting();
}
void AccessibilityManager::SetFocusRingObserverForTest(
base::RepeatingCallback<void()> observer) {
focus_ring_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;
}
} // namespace chromeos