Revert of Add button to add new FSP services to Files app. (patchset #8 id:140001...
[chromium-blink-merge.git] / chrome / browser / chromeos / device_uma.cc
blobe2e3954111a073448fe74305e3115afadd6a8e16
1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "chrome/browser/chromeos/device_uma.h"
7 #include <X11/extensions/XInput.h>
8 #include <X11/extensions/XInput2.h>
10 #include "base/logging.h"
11 #include "base/memory/singleton.h"
12 #include "base/metrics/histogram.h"
13 #include "ui/events/devices/x11/device_data_manager_x11.h"
14 #include "ui/events/event_constants.h"
15 #include "ui/events/event_utils.h"
16 #include "ui/events/platform/platform_event_source.h"
18 // Enum type for CrOS gesture lib UMA
19 enum UMACrosGestureMetricsType{
20 // To give an estimated number of all interested events.
21 UMA_CROS_GESTURE_METRICS_ALL_EVENTS,
22 UMA_CROS_GESTURE_METRICS_NOISY_GROUND,
23 // NOTE: Add states only immediately above this line. Make sure to
24 // update the enum list in tools/metrics/histograms/histograms.xml
25 // accordingly.
26 UMA_CROS_GESTURE_METRICS_COUNT
29 namespace chromeos {
31 DeviceUMA* DeviceUMA::GetInstance() {
32 return Singleton<DeviceUMA>::get();
35 DeviceUMA::DeviceUMA()
36 : stopped_(false) {
37 ui::PlatformEventSource::GetInstance()->AddPlatformEventObserver(this);
40 DeviceUMA::~DeviceUMA() {
41 Stop();
44 void DeviceUMA::Stop() {
45 if (stopped_)
46 return;
47 ui::PlatformEventSource::GetInstance()->RemovePlatformEventObserver(this);
48 stopped_ = true;
51 void DeviceUMA::WillProcessEvent(const ui::PlatformEvent& event) {
52 CheckIncomingEvent(event);
55 void DeviceUMA::DidProcessEvent(const ui::PlatformEvent& event) {
58 void DeviceUMA::CheckTouchpadEvent(XEvent* native_event) {
59 XIDeviceEvent* xiev =
60 static_cast<XIDeviceEvent*>(native_event->xcookie.data);
61 // We take only the slave event since there is no need to count twice.
62 if (xiev->deviceid != xiev->sourceid)
63 return;
64 UMA_HISTOGRAM_ENUMERATION("Touchpad.Metrics",
65 UMA_CROS_GESTURE_METRICS_ALL_EVENTS,
66 UMA_CROS_GESTURE_METRICS_COUNT);
68 // Check for the CrOS touchpad metrics gesture
69 ui::DeviceDataManagerX11 *manager = ui::DeviceDataManagerX11::GetInstance();
70 if (manager->IsCMTMetricsEvent(native_event)) {
71 ui::GestureMetricsType type;
72 float data1, data2;
73 manager->GetMetricsData(native_event, &type, &data1, &data2);
75 // We currently track only the noisy ground issue. Please see
76 // http://crbug.com/237683.
77 if (type == ui::kGestureMetricsTypeNoisyGround) {
78 UMA_HISTOGRAM_ENUMERATION("Touchpad.Metrics",
79 UMA_CROS_GESTURE_METRICS_NOISY_GROUND,
80 UMA_CROS_GESTURE_METRICS_COUNT);
85 void DeviceUMA::CheckIncomingEvent(XEvent* event) {
86 switch (event->type) {
87 case GenericEvent: {
88 ui::DeviceDataManagerX11* devices =
89 ui::DeviceDataManagerX11::GetInstance();
90 if (devices->IsXIDeviceEvent(event) &&
91 devices->IsTouchpadXInputEvent(event)) {
92 CheckTouchpadEvent(event);
94 break;
96 default:
97 break;
99 return;
102 } // namespace chromeos