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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/user_activity/user_activity_detector.h"
#include "base/format_macros.h"
#include "base/logging.h"
#include "base/observer_list.h"
#include "base/strings/stringprintf.h"
#include "base/types/cxx23_to_underlying.h"
#include "build/build_config.h"
#include "ui/base/user_activity/user_activity_observer.h"
#include "ui/events/event_utils.h"
#include "ui/events/platform/platform_event_source.h"
namespace ui {
namespace {
// Returns a string describing |event|.
std::string GetEventDebugString(const ui::Event* event) {
std::string details = base::StringPrintf(
"type=%d name=%s flags=%d time=%" PRId64,
base::to_underlying(event->type()), event->GetName(), event->flags(),
(event->time_stamp() - base::TimeTicks()).InMilliseconds());
if (event->IsKeyEvent()) {
details += base::StringPrintf(" key_code=%d",
static_cast<const ui::KeyEvent*>(event)->key_code());
} else if (event->IsMouseEvent() || event->IsTouchEvent() ||
event->IsGestureEvent()) {
details += base::StringPrintf(" location=%s",
static_cast<const ui::LocatedEvent*>(
event)->location().ToString().c_str());
}
return details;
}
} // namespace
const int UserActivityDetector::kNotifyIntervalMs = 200;
// Too low and mouse events generated at the tail end of reconfiguration
// will be reported as user activity and turn the screen back on; too high
// and we'll ignore legitimate activity.
const int UserActivityDetector::kDisplayPowerChangeIgnoreMouseMs = 1000;
// static
UserActivityDetector* UserActivityDetector::Get() {
static base::NoDestructor<UserActivityDetector> user_activity_detector;
return user_activity_detector.get();
}
bool UserActivityDetector::HasObserver(
const UserActivityObserver* observer) const {
return observers_.HasObserver(observer);
}
void UserActivityDetector::AddObserver(UserActivityObserver* observer) {
observers_.AddObserver(observer);
}
void UserActivityDetector::RemoveObserver(UserActivityObserver* observer) {
observers_.RemoveObserver(observer);
}
void UserActivityDetector::OnDisplayPowerChanging() {
honor_mouse_events_time_ =
GetCurrentTime() + base::Milliseconds(kDisplayPowerChangeIgnoreMouseMs);
}
void UserActivityDetector::HandleExternalUserActivity() {
HandleActivity(nullptr);
}
void UserActivityDetector::DidProcessEvent(
const PlatformEvent& platform_event) {
std::unique_ptr<ui::Event> event(ui::EventFromNative(platform_event));
ProcessReceivedEvent(event.get());
}
void UserActivityDetector::PlatformEventSourceDestroying() {
PlatformEventSource* platform_event_source =
PlatformEventSource::GetInstance();
CHECK(platform_event_source);
platform_event_source->RemovePlatformEventObserver(this);
}
void UserActivityDetector::ResetStateForTesting() {
last_activity_name_.clear();
last_activity_time_ = base::TimeTicks();
last_observer_notification_time_ = base::TimeTicks();
now_for_test_ = base::TimeTicks();
honor_mouse_events_time_ = base::TimeTicks();
}
void UserActivityDetector::InitPlatformEventSourceObservationForTesting() {
InitPlatformEventSourceObservation();
}
UserActivityDetector::UserActivityDetector() {
InitPlatformEventSourceObservation();
}
UserActivityDetector::~UserActivityDetector() = default;
void UserActivityDetector::InitPlatformEventSourceObservation() {
PlatformEventSource* platform_event_source =
PlatformEventSource::GetInstance();
CHECK(platform_event_source);
platform_event_source->AddPlatformEventObserver(this);
}
base::TimeTicks UserActivityDetector::GetCurrentTime() const {
return !now_for_test_.is_null() ? now_for_test_ : base::TimeTicks::Now();
}
void UserActivityDetector::ProcessReceivedEvent(const ui::Event* event) {
if (!event)
return;
if (event->IsMouseEvent() || event->IsMouseWheelEvent()) {
if (event->flags() & ui::EF_IS_SYNTHESIZED)
return;
if (!honor_mouse_events_time_.is_null()
&& GetCurrentTime() < honor_mouse_events_time_)
return;
}
HandleActivity(event);
}
void UserActivityDetector::HandleActivity(const ui::Event* event) {
base::TimeTicks now = GetCurrentTime();
last_activity_time_ = now;
last_activity_name_ = event ? event->GetName() : std::string();
if (last_observer_notification_time_.is_null() ||
(now - last_observer_notification_time_).InMillisecondsF() >=
kNotifyIntervalMs) {
if (VLOG_IS_ON(1) && event)
VLOG(1) << "Reporting user activity: " << GetEventDebugString(event);
observers_.Notify(&UserActivityObserver::OnUserActivity, event);
last_observer_notification_time_ = now;
}
}
} // namespace ui
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