Initial import.

1 files changed, 84 insertions, 0 deletions

diff --git a/chromium/ash/wm/user_activity_detector.cc b/chromium/ash/wm/user_activity_detector.cc
new file mode 100644
index 00000000000..269b9efe860
--- /dev/null
+++ b/chromium/ash/wm/user_activity_detector.cc
@@ -0,0 +1,84 @@
+// Copyright (c) 2012 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 "ash/wm/user_activity_detector.h"
+
+#include "ash/wm/property_util.h"
+#include "ash/wm/user_activity_observer.h"
+#include "ui/base/events/event.h"
+
+namespace ash {
+
+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;
+
+UserActivityDetector::UserActivityDetector() {
+}
+
+UserActivityDetector::~UserActivityDetector() {
+}
+
+bool UserActivityDetector::HasObserver(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::TimeDelta::FromMilliseconds(kDisplayPowerChangeIgnoreMouseMs);
+}
+
+void UserActivityDetector::OnKeyEvent(ui::KeyEvent* event) {
+  HandleActivity(event);
+}
+
+void UserActivityDetector::OnMouseEvent(ui::MouseEvent* event) {
+  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::OnScrollEvent(ui::ScrollEvent* event) {
+  HandleActivity(event);
+}
+
+void UserActivityDetector::OnTouchEvent(ui::TouchEvent* event) {
+  HandleActivity(event);
+}
+
+void UserActivityDetector::OnGestureEvent(ui::GestureEvent* event) {
+  HandleActivity(event);
+}
+
+base::TimeTicks UserActivityDetector::GetCurrentTime() const {
+  return !now_for_test_.is_null() ? now_for_test_ : base::TimeTicks::Now();
+}
+
+void UserActivityDetector::HandleActivity(const ui::Event* event) {
+  base::TimeTicks now = GetCurrentTime();
+  last_activity_time_ = now;
+  if (last_observer_notification_time_.is_null() ||
+      (now - last_observer_notification_time_).InMillisecondsF() >=
+      kNotifyIntervalMs) {
+    FOR_EACH_OBSERVER(UserActivityObserver, observers_, OnUserActivity(event));
+    last_observer_notification_time_ = now;
+  }
+}
+
+}  // namespace ash