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      1 // Copyright 2014 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.
      4 
      5 #include "ui/wm/core/user_activity_detector.h"
      6 
      7 #include "base/compiler_specific.h"
      8 #include "base/memory/scoped_ptr.h"
      9 #include "base/time/time.h"
     10 #include "ui/aura/test/aura_test_base.h"
     11 #include "ui/events/event.h"
     12 #include "ui/events/event_constants.h"
     13 #include "ui/events/keycodes/keyboard_codes.h"
     14 #include "ui/gfx/point.h"
     15 #include "ui/wm/core/user_activity_observer.h"
     16 
     17 namespace wm {
     18 
     19 // Implementation that just counts the number of times we've been told that the
     20 // user is active.
     21 class TestUserActivityObserver : public UserActivityObserver {
     22  public:
     23   TestUserActivityObserver() : num_invocations_(0) {}
     24 
     25   int num_invocations() const { return num_invocations_; }
     26   void reset_stats() { num_invocations_ = 0; }
     27 
     28   // UserActivityObserver implementation.
     29   virtual void OnUserActivity(const ui::Event* event) OVERRIDE {
     30     num_invocations_++;
     31   }
     32 
     33  private:
     34   // Number of times that OnUserActivity() has been called.
     35   int num_invocations_;
     36 
     37   DISALLOW_COPY_AND_ASSIGN(TestUserActivityObserver);
     38 };
     39 
     40 class UserActivityDetectorTest : public aura::test::AuraTestBase {
     41  public:
     42   UserActivityDetectorTest() {}
     43   virtual ~UserActivityDetectorTest() {}
     44 
     45   virtual void SetUp() OVERRIDE {
     46     AuraTestBase::SetUp();
     47     observer_.reset(new TestUserActivityObserver);
     48     detector_.reset(new UserActivityDetector);
     49     detector_->AddObserver(observer_.get());
     50 
     51     now_ = base::TimeTicks::Now();
     52     detector_->set_now_for_test(now_);
     53   }
     54 
     55   virtual void TearDown() OVERRIDE {
     56     detector_->RemoveObserver(observer_.get());
     57     AuraTestBase::TearDown();
     58   }
     59 
     60  protected:
     61   // Move |detector_|'s idea of the current time forward by |delta|.
     62   void AdvanceTime(base::TimeDelta delta) {
     63     now_ += delta;
     64     detector_->set_now_for_test(now_);
     65   }
     66 
     67   scoped_ptr<UserActivityDetector> detector_;
     68   scoped_ptr<TestUserActivityObserver> observer_;
     69 
     70   base::TimeTicks now_;
     71 
     72  private:
     73   DISALLOW_COPY_AND_ASSIGN(UserActivityDetectorTest);
     74 };
     75 
     76 // Checks that the observer is notified in response to different types of input
     77 // events.
     78 TEST_F(UserActivityDetectorTest, Basic) {
     79   ui::KeyEvent key_event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE);
     80   detector_->OnKeyEvent(&key_event);
     81   EXPECT_FALSE(key_event.handled());
     82   EXPECT_EQ(now_.ToInternalValue(),
     83             detector_->last_activity_time().ToInternalValue());
     84   EXPECT_EQ(1, observer_->num_invocations());
     85   observer_->reset_stats();
     86 
     87   base::TimeDelta advance_delta = base::TimeDelta::FromMilliseconds(
     88       UserActivityDetector::kNotifyIntervalMs);
     89   AdvanceTime(advance_delta);
     90   ui::MouseEvent mouse_event(
     91       ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), ui::EF_NONE, ui::EF_NONE);
     92   detector_->OnMouseEvent(&mouse_event);
     93   EXPECT_FALSE(mouse_event.handled());
     94   EXPECT_EQ(now_.ToInternalValue(),
     95             detector_->last_activity_time().ToInternalValue());
     96   EXPECT_EQ(1, observer_->num_invocations());
     97   observer_->reset_stats();
     98 
     99   base::TimeTicks time_before_ignore = now_;
    100 
    101   // Temporarily ignore mouse events when displays are turned on or off.
    102   detector_->OnDisplayPowerChanging();
    103   detector_->OnMouseEvent(&mouse_event);
    104   EXPECT_FALSE(mouse_event.handled());
    105   EXPECT_EQ(time_before_ignore.ToInternalValue(),
    106             detector_->last_activity_time().ToInternalValue());
    107   EXPECT_EQ(0, observer_->num_invocations());
    108   observer_->reset_stats();
    109 
    110   const base::TimeDelta kIgnoreMouseTime =
    111       base::TimeDelta::FromMilliseconds(
    112           UserActivityDetector::kDisplayPowerChangeIgnoreMouseMs);
    113   AdvanceTime(kIgnoreMouseTime / 2);
    114   detector_->OnMouseEvent(&mouse_event);
    115   EXPECT_FALSE(mouse_event.handled());
    116   EXPECT_EQ(time_before_ignore.ToInternalValue(),
    117             detector_->last_activity_time().ToInternalValue());
    118   EXPECT_EQ(0, observer_->num_invocations());
    119   observer_->reset_stats();
    120 
    121   // After enough time has passed, mouse events should be reported again.
    122   AdvanceTime(std::max(kIgnoreMouseTime, advance_delta));
    123   detector_->OnMouseEvent(&mouse_event);
    124   EXPECT_FALSE(mouse_event.handled());
    125   EXPECT_EQ(now_.ToInternalValue(),
    126             detector_->last_activity_time().ToInternalValue());
    127   EXPECT_EQ(1, observer_->num_invocations());
    128   observer_->reset_stats();
    129 
    130   AdvanceTime(advance_delta);
    131   ui::TouchEvent touch_event(
    132       ui::ET_TOUCH_PRESSED, gfx::Point(), 0, base::TimeDelta());
    133   detector_->OnTouchEvent(&touch_event);
    134   EXPECT_FALSE(touch_event.handled());
    135   EXPECT_EQ(now_.ToInternalValue(),
    136             detector_->last_activity_time().ToInternalValue());
    137   EXPECT_EQ(1, observer_->num_invocations());
    138   observer_->reset_stats();
    139 
    140   AdvanceTime(advance_delta);
    141   ui::GestureEvent gesture_event(
    142       0,
    143       0,
    144       ui::EF_NONE,
    145       base::TimeDelta::FromMilliseconds(base::Time::Now().ToDoubleT() * 1000),
    146       ui::GestureEventDetails(ui::ET_GESTURE_TAP));
    147   detector_->OnGestureEvent(&gesture_event);
    148   EXPECT_FALSE(gesture_event.handled());
    149   EXPECT_EQ(now_.ToInternalValue(),
    150             detector_->last_activity_time().ToInternalValue());
    151   EXPECT_EQ(1, observer_->num_invocations());
    152   observer_->reset_stats();
    153 }
    154 
    155 // Checks that observers aren't notified too frequently.
    156 TEST_F(UserActivityDetectorTest, RateLimitNotifications) {
    157   // The observer should be notified about a key event.
    158   ui::KeyEvent event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE);
    159   detector_->OnKeyEvent(&event);
    160   EXPECT_FALSE(event.handled());
    161   EXPECT_EQ(1, observer_->num_invocations());
    162   observer_->reset_stats();
    163 
    164   // It shouldn't be notified if a second event occurs in the same instant in
    165   // time.
    166   detector_->OnKeyEvent(&event);
    167   EXPECT_FALSE(event.handled());
    168   EXPECT_EQ(0, observer_->num_invocations());
    169   observer_->reset_stats();
    170 
    171   // Advance the time, but not quite enough for another notification to be sent.
    172   AdvanceTime(
    173       base::TimeDelta::FromMilliseconds(
    174           UserActivityDetector::kNotifyIntervalMs - 100));
    175   detector_->OnKeyEvent(&event);
    176   EXPECT_FALSE(event.handled());
    177   EXPECT_EQ(0, observer_->num_invocations());
    178   observer_->reset_stats();
    179 
    180   // Advance time by the notification interval, definitely moving out of the
    181   // rate limit. This should let us trigger another notification.
    182   AdvanceTime(base::TimeDelta::FromMilliseconds(
    183       UserActivityDetector::kNotifyIntervalMs));
    184 
    185   detector_->OnKeyEvent(&event);
    186   EXPECT_FALSE(event.handled());
    187   EXPECT_EQ(1, observer_->num_invocations());
    188 }
    189 
    190 // Checks that the detector ignores synthetic mouse events.
    191 TEST_F(UserActivityDetectorTest, IgnoreSyntheticMouseEvents) {
    192   ui::MouseEvent mouse_event(
    193       ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), ui::EF_IS_SYNTHESIZED,
    194       ui::EF_NONE);
    195   detector_->OnMouseEvent(&mouse_event);
    196   EXPECT_FALSE(mouse_event.handled());
    197   EXPECT_EQ(base::TimeTicks().ToInternalValue(),
    198             detector_->last_activity_time().ToInternalValue());
    199   EXPECT_EQ(0, observer_->num_invocations());
    200 }
    201 
    202 }  // namespace wm
    203