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      1 // Copyright (c) 2012 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 "ash/wm/user_activity_detector.h"
      6 
      7 #include "ash/shell.h"
      8 #include "ash/test/ash_test_base.h"
      9 #include "ash/wm/user_activity_observer.h"
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/time/time.h"
     13 #include "ui/aura/test/test_windows.h"
     14 #include "ui/aura/window.h"
     15 #include "ui/base/events/event.h"
     16 #include "ui/base/events/event_constants.h"
     17 #include "ui/base/keycodes/keyboard_codes.h"
     18 #include "ui/gfx/point.h"
     19 
     20 namespace {
     21 
     22 void SetEventTarget(ui::EventTarget* target, ui::Event* event) {
     23   ui::Event::DispatcherApi dispatch_helper(event);
     24   dispatch_helper.set_target(target);
     25 }
     26 
     27 }
     28 
     29 namespace ash {
     30 namespace test {
     31 
     32 // Implementation that just counts the number of times we've been told that the
     33 // user is active.
     34 class TestUserActivityObserver : public UserActivityObserver {
     35  public:
     36   TestUserActivityObserver() : num_invocations_(0) {}
     37 
     38   int num_invocations() const { return num_invocations_; }
     39   void reset_stats() { num_invocations_ = 0; }
     40 
     41   // UserActivityObserver implementation.
     42   virtual void OnUserActivity(const ui::Event* event) OVERRIDE {
     43     num_invocations_++;
     44   }
     45 
     46  private:
     47   // Number of times that OnUserActivity() has been called.
     48   int num_invocations_;
     49 
     50   DISALLOW_COPY_AND_ASSIGN(TestUserActivityObserver);
     51 };
     52 
     53 class UserActivityDetectorTest : public AshTestBase {
     54  public:
     55   UserActivityDetectorTest() {}
     56   virtual ~UserActivityDetectorTest() {}
     57 
     58   virtual void SetUp() OVERRIDE {
     59     AshTestBase::SetUp();
     60     observer_.reset(new TestUserActivityObserver);
     61     detector_ = Shell::GetInstance()->user_activity_detector();
     62     detector_->AddObserver(observer_.get());
     63 
     64     now_ = base::TimeTicks::Now();
     65     detector_->set_now_for_test(now_);
     66   }
     67 
     68   virtual void TearDown() OVERRIDE {
     69     detector_->RemoveObserver(observer_.get());
     70     AshTestBase::TearDown();
     71   }
     72 
     73  protected:
     74   // Move |detector_|'s idea of the current time forward by |delta|.
     75   void AdvanceTime(base::TimeDelta delta) {
     76     now_ += delta;
     77     detector_->set_now_for_test(now_);
     78   }
     79 
     80   UserActivityDetector* detector_;  // not owned
     81 
     82   scoped_ptr<TestUserActivityObserver> observer_;
     83 
     84   base::TimeTicks now_;
     85 
     86  private:
     87   DISALLOW_COPY_AND_ASSIGN(UserActivityDetectorTest);
     88 };
     89 
     90 // Checks that the observer is notified in response to different types of input
     91 // events.
     92 TEST_F(UserActivityDetectorTest, Basic) {
     93   scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(12345));
     94 
     95   ui::KeyEvent key_event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE, false);
     96   SetEventTarget(window.get(), &key_event);
     97   detector_->OnKeyEvent(&key_event);
     98   EXPECT_FALSE(key_event.handled());
     99   EXPECT_EQ(now_.ToInternalValue(),
    100             detector_->last_activity_time().ToInternalValue());
    101   EXPECT_EQ(1, observer_->num_invocations());
    102   observer_->reset_stats();
    103 
    104   base::TimeDelta advance_delta = base::TimeDelta::FromMilliseconds(
    105       UserActivityDetector::kNotifyIntervalMs);
    106   AdvanceTime(advance_delta);
    107   ui::MouseEvent mouse_event(
    108       ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), ui::EF_NONE);
    109   SetEventTarget(window.get(), &mouse_event);
    110   detector_->OnMouseEvent(&mouse_event);
    111   EXPECT_FALSE(mouse_event.handled());
    112   EXPECT_EQ(now_.ToInternalValue(),
    113             detector_->last_activity_time().ToInternalValue());
    114   EXPECT_EQ(1, observer_->num_invocations());
    115   observer_->reset_stats();
    116 
    117   base::TimeTicks time_before_ignore = now_;
    118 
    119   // Temporarily ignore mouse events when displays are turned on or off.
    120   detector_->OnDisplayPowerChanging();
    121   detector_->OnMouseEvent(&mouse_event);
    122   EXPECT_FALSE(mouse_event.handled());
    123   EXPECT_EQ(time_before_ignore.ToInternalValue(),
    124             detector_->last_activity_time().ToInternalValue());
    125   EXPECT_EQ(0, observer_->num_invocations());
    126   observer_->reset_stats();
    127 
    128   const base::TimeDelta kIgnoreMouseTime =
    129       base::TimeDelta::FromMilliseconds(
    130           UserActivityDetector::kDisplayPowerChangeIgnoreMouseMs);
    131   AdvanceTime(kIgnoreMouseTime / 2);
    132   detector_->OnMouseEvent(&mouse_event);
    133   EXPECT_FALSE(mouse_event.handled());
    134   EXPECT_EQ(time_before_ignore.ToInternalValue(),
    135             detector_->last_activity_time().ToInternalValue());
    136   EXPECT_EQ(0, observer_->num_invocations());
    137   observer_->reset_stats();
    138 
    139   // After enough time has passed, mouse events should be reported again.
    140   AdvanceTime(std::max(kIgnoreMouseTime, advance_delta));
    141   detector_->OnMouseEvent(&mouse_event);
    142   EXPECT_FALSE(mouse_event.handled());
    143   EXPECT_EQ(now_.ToInternalValue(),
    144             detector_->last_activity_time().ToInternalValue());
    145   EXPECT_EQ(1, observer_->num_invocations());
    146   observer_->reset_stats();
    147 
    148   AdvanceTime(advance_delta);
    149   ui::TouchEvent touch_event(
    150       ui::ET_TOUCH_PRESSED, gfx::Point(), 0, base::TimeDelta());
    151   SetEventTarget(window.get(), &touch_event);
    152   detector_->OnTouchEvent(&touch_event);
    153   EXPECT_FALSE(touch_event.handled());
    154   EXPECT_EQ(now_.ToInternalValue(),
    155             detector_->last_activity_time().ToInternalValue());
    156   EXPECT_EQ(1, observer_->num_invocations());
    157   observer_->reset_stats();
    158 
    159   AdvanceTime(advance_delta);
    160   ui::GestureEvent gesture_event(
    161       ui::ET_GESTURE_TAP, 0, 0, ui::EF_NONE,
    162       base::TimeDelta::FromMilliseconds(base::Time::Now().ToDoubleT() * 1000),
    163       ui::GestureEventDetails(ui::ET_GESTURE_TAP, 0, 0), 0U);
    164   SetEventTarget(window.get(), &gesture_event);
    165   detector_->OnGestureEvent(&gesture_event);
    166   EXPECT_FALSE(gesture_event.handled());
    167   EXPECT_EQ(now_.ToInternalValue(),
    168             detector_->last_activity_time().ToInternalValue());
    169   EXPECT_EQ(1, observer_->num_invocations());
    170   observer_->reset_stats();
    171 }
    172 
    173 // Checks that observers aren't notified too frequently.
    174 TEST_F(UserActivityDetectorTest, RateLimitNotifications) {
    175   scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(12345));
    176 
    177   // The observer should be notified about a key event.
    178   ui::KeyEvent event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE, false);
    179   SetEventTarget(window.get(), &event);
    180   detector_->OnKeyEvent(&event);
    181   EXPECT_FALSE(event.handled());
    182   EXPECT_EQ(1, observer_->num_invocations());
    183   observer_->reset_stats();
    184 
    185   // It shouldn't be notified if a second event occurs
    186   // in the same instant in time.
    187   detector_->OnKeyEvent(&event);
    188   EXPECT_FALSE(event.handled());
    189   EXPECT_EQ(0, observer_->num_invocations());
    190   observer_->reset_stats();
    191 
    192   // Advance the time, but not quite enough for another notification to be sent.
    193   AdvanceTime(
    194       base::TimeDelta::FromMilliseconds(
    195           UserActivityDetector::kNotifyIntervalMs - 100));
    196   detector_->OnKeyEvent(&event);
    197   EXPECT_FALSE(event.handled());
    198   EXPECT_EQ(0, observer_->num_invocations());
    199   observer_->reset_stats();
    200 
    201   // Advance time by the notification interval, definitely moving out of the
    202   // rate limit. This should let us trigger another notification.
    203   AdvanceTime(base::TimeDelta::FromMilliseconds(
    204       UserActivityDetector::kNotifyIntervalMs));
    205 
    206   detector_->OnKeyEvent(&event);
    207   EXPECT_FALSE(event.handled());
    208   EXPECT_EQ(1, observer_->num_invocations());
    209 }
    210 
    211 // Checks that the detector ignores synthetic mouse events.
    212 TEST_F(UserActivityDetectorTest, IgnoreSyntheticMouseEvents) {
    213   scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(12345));
    214   ui::MouseEvent mouse_event(
    215       ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(), ui::EF_IS_SYNTHESIZED);
    216   SetEventTarget(window.get(), &mouse_event);
    217   detector_->OnMouseEvent(&mouse_event);
    218   EXPECT_FALSE(mouse_event.handled());
    219   EXPECT_EQ(base::TimeTicks().ToInternalValue(),
    220             detector_->last_activity_time().ToInternalValue());
    221   EXPECT_EQ(0, observer_->num_invocations());
    222 }
    223 
    224 }  // namespace test
    225 }  // namespace ash
    226