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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/touch/touch_devices_controller.h"
#include <utility>
#include "ash/constants/ash_pref_names.h"
#include "ash/constants/ash_switches.h"
#include "ash/root_window_controller.h"
#include "ash/session/session_controller_impl.h"
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "base/command_line.h"
#include "base/functional/bind.h"
#include "base/metrics/histogram_macros.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/pref_change_registrar.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "ui/ozone/public/input_controller.h"
#include "ui/ozone/public/ozone_platform.h"
namespace ash {
namespace {
PrefService* GetActivePrefService() {
return Shell::Get()->session_controller()->GetActivePrefService();
}
} // namespace
// static
void TouchDevicesController::RegisterProfilePrefs(PrefRegistrySimple* registry,
bool for_test) {
registry->RegisterBooleanPref(
prefs::kTapDraggingEnabled, false,
user_prefs::PrefRegistrySyncable::SYNCABLE_OS_PRIORITY_PREF);
registry->RegisterBooleanPref(prefs::kTouchpadEnabled, true);
registry->RegisterBooleanPref(prefs::kTouchscreenEnabled, true);
if (for_test) {
registry->RegisterBooleanPref(
prefs::kNaturalScroll,
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kNaturalScrollDefault),
user_prefs::PrefRegistrySyncable::SYNCABLE_OS_PRIORITY_PREF);
}
}
TouchDevicesController::TouchDevicesController() {
Shell::Get()->session_controller()->AddObserver(this);
}
TouchDevicesController::~TouchDevicesController() {
Shell::Get()->session_controller()->RemoveObserver(this);
}
void TouchDevicesController::ToggleTouchpad() {
PrefService* prefs = GetActivePrefService();
if (!prefs)
return;
const bool touchpad_enabled = prefs->GetBoolean(prefs::kTouchpadEnabled);
prefs->SetBoolean(prefs::kTouchpadEnabled, !touchpad_enabled);
}
bool TouchDevicesController::GetTouchpadEnabled(
TouchDeviceEnabledSource source) const {
if (source == TouchDeviceEnabledSource::GLOBAL)
return global_touchpad_enabled_;
PrefService* prefs = GetActivePrefService();
return prefs && prefs->GetBoolean(prefs::kTouchpadEnabled);
}
void TouchDevicesController::SetTouchpadEnabled(
bool enabled,
TouchDeviceEnabledSource source) {
if (source == TouchDeviceEnabledSource::GLOBAL) {
global_touchpad_enabled_ = enabled;
UpdateTouchpadEnabled();
return;
}
PrefService* prefs = GetActivePrefService();
if (!prefs)
return;
prefs->SetBoolean(prefs::kTouchpadEnabled, enabled);
}
bool TouchDevicesController::GetTouchscreenEnabled(
TouchDeviceEnabledSource source) const {
if (source == TouchDeviceEnabledSource::GLOBAL)
return global_touchscreen_enabled_;
PrefService* prefs = GetActivePrefService();
return prefs && prefs->GetBoolean(prefs::kTouchscreenEnabled);
}
void TouchDevicesController::SetTouchscreenEnabled(
bool enabled,
TouchDeviceEnabledSource source) {
if (source == TouchDeviceEnabledSource::GLOBAL) {
global_touchscreen_enabled_ = enabled;
// Explicitly call |UpdateTouchscreenEnabled()| to update the actual
// touchscreen state from multiple sources.
UpdateTouchscreenEnabled();
return;
}
PrefService* prefs = GetActivePrefService();
if (!prefs)
return;
prefs->SetBoolean(prefs::kTouchscreenEnabled, enabled);
}
void TouchDevicesController::OnUserSessionAdded(const AccountId& account_id) {
uma_record_callback_ = base::BindOnce([](PrefService* prefs) {
UMA_HISTOGRAM_BOOLEAN("Touchpad.TapDragging.Started",
prefs->GetBoolean(prefs::kTapDraggingEnabled));
});
}
void TouchDevicesController::OnSigninScreenPrefServiceInitialized(
PrefService* prefs) {
ObservePrefs(prefs);
}
void TouchDevicesController::OnActiveUserPrefServiceChanged(
PrefService* prefs) {
if (uma_record_callback_)
std::move(uma_record_callback_).Run(prefs);
ObservePrefs(prefs);
}
void TouchDevicesController::ObservePrefs(PrefService* prefs) {
// Watch for pref updates.
pref_change_registrar_ = std::make_unique<PrefChangeRegistrar>();
pref_change_registrar_->Init(prefs);
pref_change_registrar_->Add(
prefs::kTapDraggingEnabled,
base::BindRepeating(&TouchDevicesController::UpdateTapDraggingEnabled,
base::Unretained(this)));
pref_change_registrar_->Add(
prefs::kTouchpadEnabled,
base::BindRepeating(&TouchDevicesController::UpdateTouchpadEnabled,
base::Unretained(this)));
pref_change_registrar_->Add(
prefs::kTouchscreenEnabled,
base::BindRepeating(&TouchDevicesController::UpdateTouchscreenEnabled,
base::Unretained(this)));
// Load current state.
UpdateTapDraggingEnabled();
UpdateTouchpadEnabled();
UpdateTouchscreenEnabled();
}
void TouchDevicesController::UpdateTapDraggingEnabled() {
PrefService* prefs = GetActivePrefService();
const bool enabled = prefs->GetBoolean(prefs::kTapDraggingEnabled);
if (tap_dragging_enabled_ == enabled)
return;
tap_dragging_enabled_ = enabled;
UMA_HISTOGRAM_BOOLEAN("Touchpad.TapDragging.Changed", enabled);
ui::OzonePlatform::GetInstance()->GetInputController()->SetTapDragging(
absl::nullopt, enabled);
}
void TouchDevicesController::UpdateTouchpadEnabled() {
ui::OzonePlatform::GetInstance()
->GetInputController()
->SetInternalTouchpadEnabled(
GetTouchpadEnabled(TouchDeviceEnabledSource::GLOBAL) &&
GetTouchpadEnabled(TouchDeviceEnabledSource::USER_PREF));
}
void TouchDevicesController::UpdateTouchscreenEnabled() {
ui::OzonePlatform::GetInstance()
->GetInputController()
->SetTouchscreensEnabled(
GetTouchscreenEnabled(TouchDeviceEnabledSource::GLOBAL) &&
GetTouchscreenEnabled(TouchDeviceEnabledSource::USER_PREF));
}
} // namespace ash
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