ui/aura/window_event_dispatcher_unittest.cc

   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 "ui/aura/window_event_dispatcher.h"
   6
   7 #include <vector>
   8
   9 #include "base/bind.h"
  10 #include "base/run_loop.h"
  11 #include "base/thread_task_runner_handle.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13 #include "ui/aura/client/capture_client.h"
  14 #include "ui/aura/client/event_client.h"
  15 #include "ui/aura/client/focus_client.h"
  16 #include "ui/aura/env.h"
  17 #include "ui/aura/test/aura_test_base.h"
  18 #include "ui/aura/test/env_test_helper.h"
  19 #include "ui/aura/test/test_cursor_client.h"
  20 #include "ui/aura/test/test_screen.h"
  21 #include "ui/aura/test/test_window_delegate.h"
  22 #include "ui/aura/test/test_windows.h"
  23 #include "ui/aura/window.h"
  24 #include "ui/aura/window_tracker.h"
  25 #include "ui/base/hit_test.h"
  26 #include "ui/events/event.h"
  27 #include "ui/events/event_handler.h"
  28 #include "ui/events/event_utils.h"
  29 #include "ui/events/gesture_detection/gesture_configuration.h"
  30 #include "ui/events/keycodes/keyboard_codes.h"
  31 #include "ui/events/test/event_generator.h"
  32 #include "ui/events/test/test_event_handler.h"
  33 #include "ui/gfx/geometry/point.h"
  34 #include "ui/gfx/geometry/rect.h"
  35 #include "ui/gfx/screen.h"
  36 #include "ui/gfx/transform.h"
  37
  38 namespace aura {
  39 namespace {
  40
  41 // A delegate that always returns a non-client component for hit tests.
  42 class NonClientDelegate : public test::TestWindowDelegate {
  43  public:
  44   NonClientDelegate()
  45       : non_client_count_(0),
  46         mouse_event_count_(0),
  47         mouse_event_flags_(0x0) {
  48   }
  49   ~NonClientDelegate() override {}
  50
  51   int non_client_count() const { return non_client_count_; }
  52   gfx::Point non_client_location() const { return non_client_location_; }
  53   int mouse_event_count() const { return mouse_event_count_; }
  54   gfx::Point mouse_event_location() const { return mouse_event_location_; }
  55   int mouse_event_flags() const { return mouse_event_flags_; }
  56
  57   int GetNonClientComponent(const gfx::Point& location) const override {
  58     NonClientDelegate* self = const_cast<NonClientDelegate*>(this);
  59     self->non_client_count_++;
  60     self->non_client_location_ = location;
  61     return HTTOPLEFT;
  62   }
  63   void OnMouseEvent(ui::MouseEvent* event) override {
  64     mouse_event_count_++;
  65     mouse_event_location_ = event->location();
  66     mouse_event_flags_ = event->flags();
  67     event->SetHandled();
  68   }
  69
  70  private:
  71   int non_client_count_;
  72   gfx::Point non_client_location_;
  73   int mouse_event_count_;
  74   gfx::Point mouse_event_location_;
  75   int mouse_event_flags_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(NonClientDelegate);
  78 };
  79
  80 // A simple event handler that consumes key events.
  81 class ConsumeKeyHandler : public ui::test::TestEventHandler {
  82  public:
  83   ConsumeKeyHandler() {}
  84   ~ConsumeKeyHandler() override {}
  85
  86   // Overridden from ui::EventHandler:
  87   void OnKeyEvent(ui::KeyEvent* event) override {
  88     ui::test::TestEventHandler::OnKeyEvent(event);
  89     event->StopPropagation();
  90   }
  91
  92  private:
  93   DISALLOW_COPY_AND_ASSIGN(ConsumeKeyHandler);
  94 };
  95
  96 bool IsFocusedWindow(aura::Window* window) {
  97   return client::GetFocusClient(window)->GetFocusedWindow() == window;
  98 }
  99
 100 }  // namespace
 101
 102 typedef test::AuraTestBase WindowEventDispatcherTest;
 103
 104 TEST_F(WindowEventDispatcherTest, OnHostMouseEvent) {
 105   // Create two non-overlapping windows so we don't have to worry about which
 106   // is on top.
 107   scoped_ptr<NonClientDelegate> delegate1(new NonClientDelegate());
 108   scoped_ptr<NonClientDelegate> delegate2(new NonClientDelegate());
 109   const int kWindowWidth = 123;
 110   const int kWindowHeight = 45;
 111   gfx::Rect bounds1(100, 200, kWindowWidth, kWindowHeight);
 112   gfx::Rect bounds2(300, 400, kWindowWidth, kWindowHeight);
 113   scoped_ptr<aura::Window> window1(CreateTestWindowWithDelegate(
 114       delegate1.get(), -1234, bounds1, root_window()));
 115   scoped_ptr<aura::Window> window2(CreateTestWindowWithDelegate(
 116       delegate2.get(), -5678, bounds2, root_window()));
 117
 118   // Send a mouse event to window1.
 119   gfx::Point point(101, 201);
 120   ui::MouseEvent event1(ui::ET_MOUSE_PRESSED, point, point,
 121                         ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
 122                         ui::EF_LEFT_MOUSE_BUTTON);
 123   DispatchEventUsingWindowDispatcher(&event1);
 124
 125   // Event was tested for non-client area for the target window.
 126   EXPECT_EQ(1, delegate1->non_client_count());
 127   EXPECT_EQ(0, delegate2->non_client_count());
 128   // The non-client component test was in local coordinates.
 129   EXPECT_EQ(gfx::Point(1, 1), delegate1->non_client_location());
 130   // Mouse event was received by target window.
 131   EXPECT_EQ(1, delegate1->mouse_event_count());
 132   EXPECT_EQ(0, delegate2->mouse_event_count());
 133   // Event was in local coordinates.
 134   EXPECT_EQ(gfx::Point(1, 1), delegate1->mouse_event_location());
 135   // Non-client flag was set.
 136   EXPECT_TRUE(delegate1->mouse_event_flags() & ui::EF_IS_NON_CLIENT);
 137 }
 138
 139 TEST_F(WindowEventDispatcherTest, RepostEvent) {
 140   // Test RepostEvent in RootWindow. It only works for Mouse Press.
 141   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 142   gfx::Point point(10, 10);
 143   ui::MouseEvent event(ui::ET_MOUSE_PRESSED, point, point,
 144                        ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
 145                        ui::EF_LEFT_MOUSE_BUTTON);
 146   host()->dispatcher()->RepostEvent(event);
 147   RunAllPendingInMessageLoop();
 148   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 149 }
 150
 151 // Check that we correctly track the state of the mouse buttons in response to
 152 // button press and release events.
 153 TEST_F(WindowEventDispatcherTest, MouseButtonState) {
 154   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 155
 156   gfx::Point location;
 157   scoped_ptr<ui::MouseEvent> event;
 158
 159   // Press the left button.
 160   event.reset(new ui::MouseEvent(
 161       ui::ET_MOUSE_PRESSED, location, location, ui::EventTimeForNow(),
 162       ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
 163   DispatchEventUsingWindowDispatcher(event.get());
 164   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 165
 166   // Additionally press the right.
 167   event.reset(new ui::MouseEvent(
 168       ui::ET_MOUSE_PRESSED, location, location, ui::EventTimeForNow(),
 169       ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON,
 170       ui::EF_RIGHT_MOUSE_BUTTON));
 171   DispatchEventUsingWindowDispatcher(event.get());
 172   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 173
 174   // Release the left button.
 175   event.reset(new ui::MouseEvent(
 176       ui::ET_MOUSE_RELEASED, location, location, ui::EventTimeForNow(),
 177       ui::EF_RIGHT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
 178   DispatchEventUsingWindowDispatcher(event.get());
 179   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 180
 181   // Release the right button.  We should ignore the Shift-is-down flag.
 182   event.reset(new ui::MouseEvent(ui::ET_MOUSE_RELEASED, location, location,
 183                                  ui::EventTimeForNow(), ui::EF_SHIFT_DOWN,
 184                                  ui::EF_RIGHT_MOUSE_BUTTON));
 185   DispatchEventUsingWindowDispatcher(event.get());
 186   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 187
 188   // Press the middle button.
 189   event.reset(new ui::MouseEvent(
 190       ui::ET_MOUSE_PRESSED, location, location, ui::EventTimeForNow(),
 191       ui::EF_MIDDLE_MOUSE_BUTTON, ui::EF_MIDDLE_MOUSE_BUTTON));
 192   DispatchEventUsingWindowDispatcher(event.get());
 193   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 194 }
 195
 196 TEST_F(WindowEventDispatcherTest, TranslatedEvent) {
 197   scoped_ptr<Window> w1(test::CreateTestWindowWithDelegate(NULL, 1,
 198       gfx::Rect(50, 50, 100, 100), root_window()));
 199
 200   gfx::Point origin(100, 100);
 201   ui::MouseEvent root(ui::ET_MOUSE_PRESSED, origin, origin,
 202                       ui::EventTimeForNow(), 0, 0);
 203
 204   EXPECT_EQ("100,100", root.location().ToString());
 205   EXPECT_EQ("100,100", root.root_location().ToString());
 206
 207   ui::MouseEvent translated_event(
 208       root, static_cast<Window*>(root_window()), w1.get(),
 209       ui::ET_MOUSE_ENTERED, root.flags());
 210   EXPECT_EQ("50,50", translated_event.location().ToString());
 211   EXPECT_EQ("100,100", translated_event.root_location().ToString());
 212 }
 213
 214 namespace {
 215
 216 class TestEventClient : public client::EventClient {
 217  public:
 218   static const int kNonLockWindowId = 100;
 219   static const int kLockWindowId = 200;
 220
 221   explicit TestEventClient(Window* root_window)
 222       : root_window_(root_window),
 223         lock_(false) {
 224     client::SetEventClient(root_window_, this);
 225     Window* lock_window =
 226         test::CreateTestWindowWithBounds(root_window_->bounds(), root_window_);
 227     lock_window->set_id(kLockWindowId);
 228     Window* non_lock_window =
 229         test::CreateTestWindowWithBounds(root_window_->bounds(), root_window_);
 230     non_lock_window->set_id(kNonLockWindowId);
 231   }
 232   ~TestEventClient() override { client::SetEventClient(root_window_, NULL); }
 233
 234   // Starts/stops locking. Locking prevents windows other than those inside
 235   // the lock container from receiving events, getting focus etc.
 236   void Lock() {
 237     lock_ = true;
 238   }
 239   void Unlock() {
 240     lock_ = false;
 241   }
 242
 243   Window* GetLockWindow() {
 244     return const_cast<Window*>(
 245         static_cast<const TestEventClient*>(this)->GetLockWindow());
 246   }
 247   const Window* GetLockWindow() const {
 248     return root_window_->GetChildById(kLockWindowId);
 249   }
 250   Window* GetNonLockWindow() {
 251     return root_window_->GetChildById(kNonLockWindowId);
 252   }
 253
 254  private:
 255   // Overridden from client::EventClient:
 256   bool CanProcessEventsWithinSubtree(const Window* window) const override {
 257     return lock_ ?
 258         window->Contains(GetLockWindow()) || GetLockWindow()->Contains(window) :
 259         true;
 260   }
 261
 262   ui::EventTarget* GetToplevelEventTarget() override { return NULL; }
 263
 264   Window* root_window_;
 265   bool lock_;
 266
 267   DISALLOW_COPY_AND_ASSIGN(TestEventClient);
 268 };
 269
 270 }  // namespace
 271
 272 TEST_F(WindowEventDispatcherTest, CanProcessEventsWithinSubtree) {
 273   TestEventClient client(root_window());
 274   test::TestWindowDelegate d;
 275
 276   ui::test::TestEventHandler nonlock_ef;
 277   ui::test::TestEventHandler lock_ef;
 278   client.GetNonLockWindow()->AddPreTargetHandler(&nonlock_ef);
 279   client.GetLockWindow()->AddPreTargetHandler(&lock_ef);
 280
 281   Window* w1 = test::CreateTestWindowWithBounds(gfx::Rect(10, 10, 20, 20),
 282                                                 client.GetNonLockWindow());
 283   w1->set_id(1);
 284   Window* w2 = test::CreateTestWindowWithBounds(gfx::Rect(30, 30, 20, 20),
 285                                                 client.GetNonLockWindow());
 286   w2->set_id(2);
 287   scoped_ptr<Window> w3(
 288       test::CreateTestWindowWithDelegate(&d, 3, gfx::Rect(30, 30, 20, 20),
 289                                          client.GetLockWindow()));
 290
 291   w1->Focus();
 292   EXPECT_TRUE(IsFocusedWindow(w1));
 293
 294   client.Lock();
 295
 296   // Since we're locked, the attempt to focus w2 will be ignored.
 297   w2->Focus();
 298   EXPECT_TRUE(IsFocusedWindow(w1));
 299   EXPECT_FALSE(IsFocusedWindow(w2));
 300
 301   {
 302     // Attempting to send a key event to w1 (not in the lock container) should
 303     // cause focus to be reset.
 304     ui::test::EventGenerator generator(root_window());
 305     generator.PressKey(ui::VKEY_SPACE, 0);
 306     EXPECT_EQ(NULL, client::GetFocusClient(w1)->GetFocusedWindow());
 307     EXPECT_FALSE(IsFocusedWindow(w1));
 308   }
 309
 310   {
 311     // Events sent to a window not in the lock container will not be processed.
 312     // i.e. never sent to the non-lock container's event filter.
 313     ui::test::EventGenerator generator(root_window(), w1);
 314     generator.ClickLeftButton();
 315     EXPECT_EQ(0, nonlock_ef.num_mouse_events());
 316
 317     // Events sent to a window in the lock container will be processed.
 318     ui::test::EventGenerator generator3(root_window(), w3.get());
 319     generator3.PressLeftButton();
 320     EXPECT_EQ(1, lock_ef.num_mouse_events());
 321   }
 322
 323   // Prevent w3 from being deleted by the hierarchy since its delegate is owned
 324   // by this scope.
 325   w3->parent()->RemoveChild(w3.get());
 326 }
 327
 328 TEST_F(WindowEventDispatcherTest, DontIgnoreUnknownKeys) {
 329   ConsumeKeyHandler handler;
 330   root_window()->AddPreTargetHandler(&handler);
 331
 332   ui::KeyEvent unknown_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN, ui::EF_NONE);
 333   DispatchEventUsingWindowDispatcher(&unknown_event);
 334   EXPECT_TRUE(unknown_event.handled());
 335   EXPECT_EQ(1, handler.num_key_events());
 336
 337   handler.Reset();
 338   ui::KeyEvent known_event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE);
 339   DispatchEventUsingWindowDispatcher(&known_event);
 340   EXPECT_TRUE(known_event.handled());
 341   EXPECT_EQ(1, handler.num_key_events());
 342
 343   handler.Reset();
 344   ui::KeyEvent ime_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN,
 345                          ui::EF_IME_FABRICATED_KEY);
 346   DispatchEventUsingWindowDispatcher(&ime_event);
 347   EXPECT_TRUE(ime_event.handled());
 348   EXPECT_EQ(1, handler.num_key_events());
 349
 350   handler.Reset();
 351   ui::KeyEvent unknown_key_with_char_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN,
 352                                            ui::EF_NONE);
 353   unknown_key_with_char_event.set_character(0x00e4 /* "ä" */);
 354   DispatchEventUsingWindowDispatcher(&unknown_key_with_char_event);
 355   EXPECT_TRUE(unknown_key_with_char_event.handled());
 356   EXPECT_EQ(1, handler.num_key_events());
 357   root_window()->RemovePreTargetHandler(&handler);
 358 }
 359
 360 TEST_F(WindowEventDispatcherTest, NoDelegateWindowReceivesKeyEvents) {
 361   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
 362   w1->Show();
 363   w1->Focus();
 364
 365   ui::test::TestEventHandler handler;
 366   w1->AddPreTargetHandler(&handler);
 367   ui::KeyEvent key_press(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::EF_NONE);
 368   DispatchEventUsingWindowDispatcher(&key_press);
 369   EXPECT_TRUE(key_press.handled());
 370   EXPECT_EQ(1, handler.num_key_events());
 371
 372   w1->RemovePreTargetHandler(&handler);
 373 }
 374
 375 // Tests that touch-events that are beyond the bounds of the root-window do get
 376 // propagated to the event filters correctly with the root as the target.
 377 TEST_F(WindowEventDispatcherTest, TouchEventsOutsideBounds) {
 378   ui::test::TestEventHandler handler;
 379   root_window()->AddPreTargetHandler(&handler);
 380
 381   gfx::Point position = root_window()->bounds().origin();
 382   position.Offset(-10, -10);
 383   ui::TouchEvent press(
 384       ui::ET_TOUCH_PRESSED, position, 0, ui::EventTimeForNow());
 385   DispatchEventUsingWindowDispatcher(&press);
 386   EXPECT_EQ(1, handler.num_touch_events());
 387
 388   position = root_window()->bounds().origin();
 389   position.Offset(root_window()->bounds().width() + 10,
 390                   root_window()->bounds().height() + 10);
 391   ui::TouchEvent release(
 392       ui::ET_TOUCH_RELEASED, position, 0, ui::EventTimeForNow());
 393   DispatchEventUsingWindowDispatcher(&release);
 394   EXPECT_EQ(2, handler.num_touch_events());
 395   root_window()->RemovePreTargetHandler(&handler);
 396 }
 397
 398 // Tests that scroll events are dispatched correctly.
 399 TEST_F(WindowEventDispatcherTest, ScrollEventDispatch) {
 400   base::TimeDelta now = ui::EventTimeForNow();
 401   ui::test::TestEventHandler handler;
 402   root_window()->AddPreTargetHandler(&handler);
 403
 404   test::TestWindowDelegate delegate;
 405   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &delegate));
 406   w1->SetBounds(gfx::Rect(20, 20, 40, 40));
 407
 408   // A scroll event on the root-window itself is dispatched.
 409   ui::ScrollEvent scroll1(ui::ET_SCROLL,
 410                           gfx::Point(10, 10),
 411                           now,
 412                           0,
 413                           0, -10,
 414                           0, -10,
 415                           2);
 416   DispatchEventUsingWindowDispatcher(&scroll1);
 417   EXPECT_EQ(1, handler.num_scroll_events());
 418
 419   // Scroll event on a window should be dispatched properly.
 420   ui::ScrollEvent scroll2(ui::ET_SCROLL,
 421                           gfx::Point(25, 30),
 422                           now,
 423                           0,
 424                           -10, 0,
 425                           -10, 0,
 426                           2);
 427   DispatchEventUsingWindowDispatcher(&scroll2);
 428   EXPECT_EQ(2, handler.num_scroll_events());
 429   root_window()->RemovePreTargetHandler(&handler);
 430 }
 431
 432 namespace {
 433
 434 // FilterFilter that tracks the types of events it's seen.
 435 class EventFilterRecorder : public ui::EventHandler {
 436  public:
 437   typedef std::vector<ui::EventType> Events;
 438   typedef std::vector<gfx::Point> EventLocations;
 439   typedef std::vector<int> EventFlags;
 440
 441   EventFilterRecorder()
 442       : wait_until_event_(ui::ET_UNKNOWN),
 443         last_touch_may_cause_scrolling_(false) {
 444   }
 445
 446   const Events& events() const { return events_; }
 447
 448   const EventLocations& mouse_locations() const { return mouse_locations_; }
 449   gfx::Point mouse_location(int i) const { return mouse_locations_[i]; }
 450   const EventLocations& touch_locations() const { return touch_locations_; }
 451   const EventLocations& gesture_locations() const { return gesture_locations_; }
 452   const EventFlags& mouse_event_flags() const { return mouse_event_flags_; }
 453
 454   void WaitUntilReceivedEvent(ui::EventType type) {
 455     wait_until_event_ = type;
 456     run_loop_.reset(new base::RunLoop());
 457     run_loop_->Run();
 458   }
 459
 460   Events GetAndResetEvents() {
 461     Events events = events_;
 462     Reset();
 463     return events;
 464   }
 465
 466   void Reset() {
 467     events_.clear();
 468     mouse_locations_.clear();
 469     touch_locations_.clear();
 470     gesture_locations_.clear();
 471     mouse_event_flags_.clear();
 472     last_touch_may_cause_scrolling_ = false;
 473   }
 474
 475   // ui::EventHandler overrides:
 476   void OnEvent(ui::Event* event) override {
 477     ui::EventHandler::OnEvent(event);
 478     events_.push_back(event->type());
 479     if (wait_until_event_ == event->type() && run_loop_) {
 480       run_loop_->Quit();
 481       wait_until_event_ = ui::ET_UNKNOWN;
 482     }
 483   }
 484
 485   void OnMouseEvent(ui::MouseEvent* event) override {
 486     mouse_locations_.push_back(event->location());
 487     mouse_event_flags_.push_back(event->flags());
 488   }
 489
 490   void OnTouchEvent(ui::TouchEvent* event) override {
 491     touch_locations_.push_back(event->location());
 492     last_touch_may_cause_scrolling_ = event->may_cause_scrolling();
 493   }
 494
 495   void OnGestureEvent(ui::GestureEvent* event) override {
 496     gesture_locations_.push_back(event->location());
 497   }
 498
 499   bool HasReceivedEvent(ui::EventType type) {
 500     return std::find(events_.begin(), events_.end(), type) != events_.end();
 501   }
 502
 503   bool LastTouchMayCauseScrolling() const {
 504     return last_touch_may_cause_scrolling_;
 505   }
 506
 507  private:
 508   scoped_ptr<base::RunLoop> run_loop_;
 509   ui::EventType wait_until_event_;
 510
 511   Events events_;
 512   EventLocations mouse_locations_;
 513   EventLocations touch_locations_;
 514   EventLocations gesture_locations_;
 515   EventFlags mouse_event_flags_;
 516   bool last_touch_may_cause_scrolling_;
 517
 518   DISALLOW_COPY_AND_ASSIGN(EventFilterRecorder);
 519 };
 520
 521 // Converts an EventType to a string.
 522 std::string EventTypeToString(ui::EventType type) {
 523   switch (type) {
 524     case ui::ET_TOUCH_RELEASED:
 525       return "TOUCH_RELEASED";
 526
 527     case ui::ET_TOUCH_CANCELLED:
 528       return "TOUCH_CANCELLED";
 529
 530     case ui::ET_TOUCH_PRESSED:
 531       return "TOUCH_PRESSED";
 532
 533     case ui::ET_TOUCH_MOVED:
 534       return "TOUCH_MOVED";
 535
 536     case ui::ET_MOUSE_PRESSED:
 537       return "MOUSE_PRESSED";
 538
 539     case ui::ET_MOUSE_DRAGGED:
 540       return "MOUSE_DRAGGED";
 541
 542     case ui::ET_MOUSE_RELEASED:
 543       return "MOUSE_RELEASED";
 544
 545     case ui::ET_MOUSE_MOVED:
 546       return "MOUSE_MOVED";
 547
 548     case ui::ET_MOUSE_ENTERED:
 549       return "MOUSE_ENTERED";
 550
 551     case ui::ET_MOUSE_EXITED:
 552       return "MOUSE_EXITED";
 553
 554     case ui::ET_GESTURE_SCROLL_BEGIN:
 555       return "GESTURE_SCROLL_BEGIN";
 556
 557     case ui::ET_GESTURE_SCROLL_END:
 558       return "GESTURE_SCROLL_END";
 559
 560     case ui::ET_GESTURE_SCROLL_UPDATE:
 561       return "GESTURE_SCROLL_UPDATE";
 562
 563     case ui::ET_GESTURE_PINCH_BEGIN:
 564       return "GESTURE_PINCH_BEGIN";
 565
 566     case ui::ET_GESTURE_PINCH_END:
 567       return "GESTURE_PINCH_END";
 568
 569     case ui::ET_GESTURE_PINCH_UPDATE:
 570       return "GESTURE_PINCH_UPDATE";
 571
 572     case ui::ET_GESTURE_TAP:
 573       return "GESTURE_TAP";
 574
 575     case ui::ET_GESTURE_TAP_DOWN:
 576       return "GESTURE_TAP_DOWN";
 577
 578     case ui::ET_GESTURE_TAP_CANCEL:
 579       return "GESTURE_TAP_CANCEL";
 580
 581     case ui::ET_GESTURE_SHOW_PRESS:
 582       return "GESTURE_SHOW_PRESS";
 583
 584     case ui::ET_GESTURE_BEGIN:
 585       return "GESTURE_BEGIN";
 586
 587     case ui::ET_GESTURE_END:
 588       return "GESTURE_END";
 589
 590     default:
 591       // We should explicitly require each event type.
 592       NOTREACHED() << "Received unexpected event: " << type;
 593       break;
 594   }
 595   return "";
 596 }
 597
 598 std::string EventTypesToString(const EventFilterRecorder::Events& events) {
 599   std::string result;
 600   for (size_t i = 0; i < events.size(); ++i) {
 601     if (i != 0)
 602       result += " ";
 603     result += EventTypeToString(events[i]);
 604   }
 605   return result;
 606 }
 607
 608 }  // namespace
 609
 610 #if defined(OS_WIN) && defined(ARCH_CPU_X86)
 611 #define MAYBE(x) DISABLED_##x
 612 #else
 613 #define MAYBE(x) x
 614 #endif
 615
 616 // Verifies a repost mouse event targets the window with capture (if there is
 617 // one).
 618 // Flaky on 32-bit Windows bots.  http://crbug.com/388290
 619 TEST_F(WindowEventDispatcherTest, MAYBE(RepostTargetsCaptureWindow)) {
 620   // Set capture on |window| generate a mouse event (that is reposted) and not
 621   // over |window| and verify |window| gets it (|window| gets it because it has
 622   // capture).
 623   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 624   EventFilterRecorder recorder;
 625   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), NULL));
 626   window->SetBounds(gfx::Rect(20, 20, 40, 30));
 627   window->AddPreTargetHandler(&recorder);
 628   window->SetCapture();
 629   const ui::MouseEvent press_event(
 630       ui::ET_MOUSE_PRESSED, gfx::Point(), gfx::Point(), ui::EventTimeForNow(),
 631       ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
 632   host()->dispatcher()->RepostEvent(press_event);
 633   RunAllPendingInMessageLoop();  // Necessitated by RepostEvent().
 634   // Mouse moves/enters may be generated. We only care about a pressed.
 635   EXPECT_TRUE(EventTypesToString(recorder.events()).find("MOUSE_PRESSED") !=
 636               std::string::npos) << EventTypesToString(recorder.events());
 637 }
 638
 639 TEST_F(WindowEventDispatcherTest, MouseMovesHeld) {
 640   EventFilterRecorder recorder;
 641   root_window()->AddPreTargetHandler(&recorder);
 642
 643   test::TestWindowDelegate delegate;
 644   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 645       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
 646
 647   ui::MouseEvent mouse_move_event(ui::ET_MOUSE_MOVED, gfx::Point(0, 0),
 648                                   gfx::Point(0, 0), ui::EventTimeForNow(), 0,
 649                                   0);
 650   DispatchEventUsingWindowDispatcher(&mouse_move_event);
 651   // Discard MOUSE_ENTER.
 652   recorder.Reset();
 653
 654   host()->dispatcher()->HoldPointerMoves();
 655
 656   // Check that we don't immediately dispatch the MOUSE_DRAGGED event.
 657   ui::MouseEvent mouse_dragged_event(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0),
 658                                      gfx::Point(0, 0), ui::EventTimeForNow(), 0,
 659                                      0);
 660   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 661   EXPECT_TRUE(recorder.events().empty());
 662
 663   // Check that we do dispatch the held MOUSE_DRAGGED event before another type
 664   // of event.
 665   ui::MouseEvent mouse_pressed_event(ui::ET_MOUSE_PRESSED, gfx::Point(0, 0),
 666                                      gfx::Point(0, 0), ui::EventTimeForNow(), 0,
 667                                      0);
 668   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 669   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 670             EventTypesToString(recorder.events()));
 671   recorder.Reset();
 672
 673   // Check that we coalesce held MOUSE_DRAGGED events. Note that here (and
 674   // elsewhere in this test) we re-define each event prior to dispatch so that
 675   // it has the correct state (phase, handled, target, etc.).
 676   mouse_dragged_event =
 677       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0), gfx::Point(0, 0),
 678                      ui::EventTimeForNow(), 0, 0);
 679   ui::MouseEvent mouse_dragged_event2(ui::ET_MOUSE_DRAGGED, gfx::Point(10, 10),
 680                                       gfx::Point(10, 10), ui::EventTimeForNow(),
 681                                       0, 0);
 682   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 683   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 684   EXPECT_TRUE(recorder.events().empty());
 685   mouse_pressed_event =
 686       ui::MouseEvent(ui::ET_MOUSE_PRESSED, gfx::Point(0, 0), gfx::Point(0, 0),
 687                      ui::EventTimeForNow(), 0, 0);
 688   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 689   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 690             EventTypesToString(recorder.events()));
 691   recorder.Reset();
 692
 693   // Check that on ReleasePointerMoves, held events are not dispatched
 694   // immediately, but posted instead.
 695   mouse_dragged_event =
 696       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0), gfx::Point(0, 0),
 697                      ui::EventTimeForNow(), 0, 0);
 698   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 699   host()->dispatcher()->ReleasePointerMoves();
 700   EXPECT_TRUE(recorder.events().empty());
 701   RunAllPendingInMessageLoop();
 702   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(recorder.events()));
 703   recorder.Reset();
 704
 705   // However if another message comes in before the dispatch of the posted
 706   // event, check that the posted event is dispatched before this new event.
 707   host()->dispatcher()->HoldPointerMoves();
 708   mouse_dragged_event =
 709       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0), gfx::Point(0, 0),
 710                      ui::EventTimeForNow(), 0, 0);
 711   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 712   host()->dispatcher()->ReleasePointerMoves();
 713   mouse_pressed_event =
 714       ui::MouseEvent(ui::ET_MOUSE_PRESSED, gfx::Point(0, 0), gfx::Point(0, 0),
 715                      ui::EventTimeForNow(), 0, 0);
 716   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 717   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 718             EventTypesToString(recorder.events()));
 719   recorder.Reset();
 720   RunAllPendingInMessageLoop();
 721   EXPECT_TRUE(recorder.events().empty());
 722
 723   // Check that if the other message is another MOUSE_DRAGGED, we still coalesce
 724   // them.
 725   host()->dispatcher()->HoldPointerMoves();
 726   mouse_dragged_event =
 727       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0), gfx::Point(0, 0),
 728                      ui::EventTimeForNow(), 0, 0);
 729   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 730   host()->dispatcher()->ReleasePointerMoves();
 731   mouse_dragged_event2 =
 732       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(10, 10),
 733                      gfx::Point(10, 10), ui::EventTimeForNow(), 0, 0);
 734   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 735   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(recorder.events()));
 736   recorder.Reset();
 737   RunAllPendingInMessageLoop();
 738   EXPECT_TRUE(recorder.events().empty());
 739
 740   // Check that synthetic mouse move event has a right location when issued
 741   // while holding pointer moves.
 742   mouse_dragged_event =
 743       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0), gfx::Point(0, 0),
 744                      ui::EventTimeForNow(), 0, 0);
 745   mouse_dragged_event2 =
 746       ui::MouseEvent(ui::ET_MOUSE_DRAGGED, gfx::Point(10, 10),
 747                      gfx::Point(10, 10), ui::EventTimeForNow(), 0, 0);
 748   ui::MouseEvent mouse_dragged_event3(ui::ET_MOUSE_DRAGGED, gfx::Point(28, 28),
 749                                       gfx::Point(28, 28), ui::EventTimeForNow(),
 750                                       0, 0);
 751   host()->dispatcher()->HoldPointerMoves();
 752   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 753   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 754   window->SetBounds(gfx::Rect(15, 15, 80, 80));
 755   DispatchEventUsingWindowDispatcher(&mouse_dragged_event3);
 756   RunAllPendingInMessageLoop();
 757   EXPECT_TRUE(recorder.events().empty());
 758   host()->dispatcher()->ReleasePointerMoves();
 759   RunAllPendingInMessageLoop();
 760   EXPECT_EQ("MOUSE_MOVED", EventTypesToString(recorder.events()));
 761   EXPECT_EQ(gfx::Point(13, 13), recorder.mouse_location(0));
 762   recorder.Reset();
 763   root_window()->RemovePreTargetHandler(&recorder);
 764 }
 765
 766 TEST_F(WindowEventDispatcherTest, TouchMovesHeld) {
 767   EventFilterRecorder recorder;
 768   root_window()->AddPreTargetHandler(&recorder);
 769
 770   test::TestWindowDelegate delegate;
 771   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 772       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 773
 774   // Starting the touch and throwing out the first few events, since the system
 775   // is going to generate synthetic mouse events that are not relevant to the
 776   // test.
 777   ui::TouchEvent touch_pressed_event(
 778       ui::ET_TOUCH_PRESSED, gfx::Point(10, 10), 0, ui::EventTimeForNow());
 779   DispatchEventUsingWindowDispatcher(&touch_pressed_event);
 780   recorder.WaitUntilReceivedEvent(ui::ET_GESTURE_SHOW_PRESS);
 781   recorder.Reset();
 782
 783   host()->dispatcher()->HoldPointerMoves();
 784
 785   // Check that we don't immediately dispatch the TOUCH_MOVED event.
 786   ui::TouchEvent touch_moved_event(
 787       ui::ET_TOUCH_MOVED, gfx::Point(10, 10), 0, ui::EventTimeForNow());
 788   ui::TouchEvent touch_moved_event2(
 789       ui::ET_TOUCH_MOVED, gfx::Point(11, 10), 0, ui::EventTimeForNow());
 790   ui::TouchEvent touch_moved_event3(
 791       ui::ET_TOUCH_MOVED, gfx::Point(12, 10), 0, ui::EventTimeForNow());
 792
 793   DispatchEventUsingWindowDispatcher(&touch_moved_event);
 794   EXPECT_TRUE(recorder.events().empty());
 795
 796   // Check that on ReleasePointerMoves, held events are not dispatched
 797   // immediately, but posted instead.
 798   DispatchEventUsingWindowDispatcher(&touch_moved_event2);
 799   host()->dispatcher()->ReleasePointerMoves();
 800   EXPECT_TRUE(recorder.events().empty());
 801
 802   RunAllPendingInMessageLoop();
 803   EXPECT_EQ("TOUCH_MOVED", EventTypesToString(recorder.events()));
 804   recorder.Reset();
 805
 806   // If another touch event occurs then the held touch should be dispatched
 807   // immediately before it.
 808   ui::TouchEvent touch_released_event(
 809       ui::ET_TOUCH_RELEASED, gfx::Point(10, 10), 0, ui::EventTimeForNow());
 810   recorder.Reset();
 811   host()->dispatcher()->HoldPointerMoves();
 812   DispatchEventUsingWindowDispatcher(&touch_moved_event3);
 813   DispatchEventUsingWindowDispatcher(&touch_released_event);
 814   EXPECT_EQ("TOUCH_MOVED TOUCH_RELEASED GESTURE_TAP GESTURE_END",
 815             EventTypesToString(recorder.events()));
 816   recorder.Reset();
 817   host()->dispatcher()->ReleasePointerMoves();
 818   RunAllPendingInMessageLoop();
 819   EXPECT_TRUE(recorder.events().empty());
 820   root_window()->RemovePreTargetHandler(&recorder);
 821 }
 822
 823 // Tests that mouse move event has a right location
 824 // when there isn't the target window
 825 TEST_F(WindowEventDispatcherTest, MouseEventWithoutTargetWindow) {
 826   EventFilterRecorder recorder_first;
 827   EventFilterRecorder recorder_second;
 828
 829   test::TestWindowDelegate delegate;
 830   scoped_ptr<aura::Window> window_first(CreateTestWindowWithDelegate(
 831       &delegate, 1, gfx::Rect(20, 10, 10, 20), root_window()));
 832   window_first->Show();
 833   window_first->AddPreTargetHandler(&recorder_first);
 834
 835   scoped_ptr<aura::Window> window_second(CreateTestWindowWithDelegate(
 836       &delegate, 2, gfx::Rect(20, 30, 10, 20), root_window()));
 837   window_second->Show();
 838   window_second->AddPreTargetHandler(&recorder_second);
 839
 840   const gfx::Point event_location(22, 33);
 841   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 842                        ui::EventTimeForNow(), 0, 0);
 843   DispatchEventUsingWindowDispatcher(&mouse);
 844
 845   EXPECT_TRUE(recorder_first.events().empty());
 846   EXPECT_EQ("MOUSE_ENTERED MOUSE_MOVED",
 847             EventTypesToString(recorder_second.events()));
 848   ASSERT_EQ(2u, recorder_second.mouse_locations().size());
 849   EXPECT_EQ(gfx::Point(2, 3).ToString(),
 850             recorder_second.mouse_locations()[0].ToString());
 851 }
 852
 853 // Tests that a mouse exit is dispatched to the last mouse location when
 854 // the window is hiddden.
 855 TEST_F(WindowEventDispatcherTest, DispatchMouseExitWhenHidingWindow) {
 856   EventFilterRecorder recorder;
 857
 858   test::TestWindowDelegate delegate;
 859   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 860       &delegate, 1, gfx::Rect(10, 10, 50, 50), root_window()));
 861   window->Show();
 862   window->AddPreTargetHandler(&recorder);
 863
 864   // Dispatch a mouse move event into the window.
 865   const gfx::Point event_location(22, 33);
 866   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 867                        ui::EventTimeForNow(), 0, 0);
 868   DispatchEventUsingWindowDispatcher(&mouse);
 869   EXPECT_FALSE(recorder.events().empty());
 870   recorder.Reset();
 871
 872   // Hide the window and verify a mouse exit event's location.
 873   window->Hide();
 874   EXPECT_FALSE(recorder.events().empty());
 875   EXPECT_EQ("MOUSE_EXITED", EventTypesToString(recorder.events()));
 876   ASSERT_EQ(1u, recorder.mouse_locations().size());
 877   EXPECT_EQ(gfx::Point(12, 23).ToString(),
 878             recorder.mouse_locations()[0].ToString());
 879 }
 880
 881 // Verifies that a direct call to ProcessedTouchEvent() does not cause a crash.
 882 TEST_F(WindowEventDispatcherTest, CallToProcessedTouchEvent) {
 883   test::TestWindowDelegate delegate;
 884   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 885       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 886
 887   host()->dispatcher()->ProcessedTouchEvent(0, window.get(), ui::ER_UNHANDLED);
 888 }
 889
 890 // This event handler requests the dispatcher to start holding pointer-move
 891 // events when it receives the first scroll-update gesture.
 892 class HoldPointerOnScrollHandler : public ui::test::TestEventHandler {
 893  public:
 894   HoldPointerOnScrollHandler(WindowEventDispatcher* dispatcher,
 895                              EventFilterRecorder* filter)
 896       : dispatcher_(dispatcher),
 897         filter_(filter),
 898         holding_moves_(false) {}
 899   ~HoldPointerOnScrollHandler() override {}
 900
 901  private:
 902   // ui::test::TestEventHandler:
 903   void OnGestureEvent(ui::GestureEvent* gesture) override {
 904     if (!holding_moves_ && gesture->type() == ui::ET_GESTURE_SCROLL_UPDATE) {
 905       holding_moves_ = true;
 906       dispatcher_->HoldPointerMoves();
 907       filter_->Reset();
 908     } else if (gesture->type() == ui::ET_GESTURE_SCROLL_END) {
 909       dispatcher_->ReleasePointerMoves();
 910       holding_moves_ = false;
 911     }
 912   }
 913
 914   WindowEventDispatcher* dispatcher_;
 915   EventFilterRecorder* filter_;
 916   bool holding_moves_;
 917
 918   DISALLOW_COPY_AND_ASSIGN(HoldPointerOnScrollHandler);
 919 };
 920
 921 // Tests that touch-move events don't contribute to an in-progress scroll
 922 // gesture if touch-move events are being held by the dispatcher.
 923 TEST_F(WindowEventDispatcherTest, TouchMovesHeldOnScroll) {
 924   EventFilterRecorder recorder;
 925   root_window()->AddPreTargetHandler(&recorder);
 926   test::TestWindowDelegate delegate;
 927   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
 928   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 929       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 930   window->AddPreTargetHandler(&handler);
 931
 932   ui::test::EventGenerator generator(root_window());
 933   generator.GestureScrollSequence(
 934       gfx::Point(60, 60), gfx::Point(10, 60),
 935       base::TimeDelta::FromMilliseconds(100), 25);
 936
 937   // |handler| will have reset |filter| and started holding the touch-move
 938   // events when scrolling started. At the end of the scroll (i.e. upon
 939   // touch-release), the held touch-move event will have been dispatched first,
 940   // along with the subsequent events (i.e. touch-release, scroll-end, and
 941   // gesture-end).
 942   const EventFilterRecorder::Events& events = recorder.events();
 943   EXPECT_EQ(
 944       "TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
 945       "GESTURE_SCROLL_END GESTURE_END",
 946       EventTypesToString(events));
 947   ASSERT_EQ(2u, recorder.touch_locations().size());
 948   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
 949             recorder.touch_locations()[0].ToString());
 950   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
 951             recorder.touch_locations()[1].ToString());
 952   root_window()->RemovePreTargetHandler(&recorder);
 953 }
 954
 955 // Tests that a 'held' touch-event does contribute to gesture event when it is
 956 // dispatched.
 957 TEST_F(WindowEventDispatcherTest, HeldTouchMoveContributesToGesture) {
 958   EventFilterRecorder recorder;
 959   root_window()->AddPreTargetHandler(&recorder);
 960
 961   const gfx::Point location(20, 20);
 962   ui::TouchEvent press(
 963       ui::ET_TOUCH_PRESSED, location, 0, ui::EventTimeForNow());
 964   DispatchEventUsingWindowDispatcher(&press);
 965   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_PRESSED));
 966   recorder.Reset();
 967
 968   host()->dispatcher()->HoldPointerMoves();
 969
 970   ui::TouchEvent move(ui::ET_TOUCH_MOVED,
 971                       location + gfx::Vector2d(100, 100),
 972                       0,
 973                       ui::EventTimeForNow());
 974   DispatchEventUsingWindowDispatcher(&move);
 975   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 976   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_BEGIN));
 977   recorder.Reset();
 978
 979   host()->dispatcher()->ReleasePointerMoves();
 980   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 981   RunAllPendingInMessageLoop();
 982   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 983   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_BEGIN));
 984   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_UPDATE));
 985
 986   root_window()->RemovePreTargetHandler(&recorder);
 987 }
 988
 989 // Tests that synthetic mouse events are ignored when mouse
 990 // events are disabled.
 991 TEST_F(WindowEventDispatcherTest, DispatchSyntheticMouseEvents) {
 992   EventFilterRecorder recorder;
 993   root_window()->AddPreTargetHandler(&recorder);
 994
 995   test::TestWindowDelegate delegate;
 996   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 997       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
 998   window->Show();
 999   window->SetCapture();
1000
1001   test::TestCursorClient cursor_client(root_window());
1002
1003   // Dispatch a non-synthetic mouse event when mouse events are enabled.
1004   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
1005                         gfx::Point(10, 10), ui::EventTimeForNow(), 0, 0);
1006   DispatchEventUsingWindowDispatcher(&mouse1);
1007   EXPECT_FALSE(recorder.events().empty());
1008   recorder.Reset();
1009
1010   // Dispatch a synthetic mouse event when mouse events are enabled.
1011   ui::MouseEvent mouse2(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
1012                         gfx::Point(10, 10), ui::EventTimeForNow(),
1013                         ui::EF_IS_SYNTHESIZED, 0);
1014   DispatchEventUsingWindowDispatcher(&mouse2);
1015   EXPECT_FALSE(recorder.events().empty());
1016   recorder.Reset();
1017
1018   // Dispatch a synthetic mouse event when mouse events are disabled.
1019   cursor_client.DisableMouseEvents();
1020   DispatchEventUsingWindowDispatcher(&mouse2);
1021   EXPECT_TRUE(recorder.events().empty());
1022   root_window()->RemovePreTargetHandler(&recorder);
1023 }
1024
1025 // Tests that a mouse-move event is not synthesized when a mouse-button is down.
1026 TEST_F(WindowEventDispatcherTest, DoNotSynthesizeWhileButtonDown) {
1027   EventFilterRecorder recorder;
1028   test::TestWindowDelegate delegate;
1029   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1030       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
1031   window->Show();
1032
1033   window->AddPreTargetHandler(&recorder);
1034   // Dispatch a non-synthetic mouse event when mouse events are enabled.
1035   ui::MouseEvent mouse1(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
1036                         gfx::Point(10, 10), ui::EventTimeForNow(),
1037                         ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
1038   DispatchEventUsingWindowDispatcher(&mouse1);
1039   ASSERT_EQ(1u, recorder.events().size());
1040   EXPECT_EQ(ui::ET_MOUSE_PRESSED, recorder.events()[0]);
1041   window->RemovePreTargetHandler(&recorder);
1042   recorder.Reset();
1043
1044   // Move |window| away from underneath the cursor.
1045   root_window()->AddPreTargetHandler(&recorder);
1046   window->SetBounds(gfx::Rect(30, 30, 100, 100));
1047   EXPECT_TRUE(recorder.events().empty());
1048   RunAllPendingInMessageLoop();
1049   EXPECT_TRUE(recorder.events().empty());
1050   root_window()->RemovePreTargetHandler(&recorder);
1051 }
1052
1053 #if defined(OS_WIN) && defined(ARCH_CPU_X86)
1054 #define MAYBE(x) DISABLED_##x
1055 #else
1056 #define MAYBE(x) x
1057 #endif
1058
1059 // Tests synthetic mouse events generated when window bounds changes such that
1060 // the cursor previously outside the window becomes inside, or vice versa.
1061 // Do not synthesize events if the window ignores events or is invisible.
1062 // Flaky on 32-bit Windows bots.  http://crbug.com/388272
1063 TEST_F(WindowEventDispatcherTest,
1064        MAYBE(SynthesizeMouseEventsOnWindowBoundsChanged)) {
1065   test::TestWindowDelegate delegate;
1066   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1067       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
1068   window->Show();
1069   window->SetCapture();
1070
1071   EventFilterRecorder recorder;
1072   window->AddPreTargetHandler(&recorder);
1073
1074   // Dispatch a non-synthetic mouse event to place cursor inside window bounds.
1075   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
1076                        gfx::Point(10, 10), ui::EventTimeForNow(), 0, 0);
1077   DispatchEventUsingWindowDispatcher(&mouse);
1078   EXPECT_FALSE(recorder.events().empty());
1079   recorder.Reset();
1080
1081   // Update the window bounds so that cursor is now outside the window.
1082   // This should trigger a synthetic MOVED event.
1083   gfx::Rect bounds1(20, 20, 100, 100);
1084   window->SetBounds(bounds1);
1085   RunAllPendingInMessageLoop();
1086   ASSERT_FALSE(recorder.events().empty());
1087   ASSERT_FALSE(recorder.mouse_event_flags().empty());
1088   EXPECT_EQ(ui::ET_MOUSE_MOVED, recorder.events().back());
1089   EXPECT_EQ(ui::EF_IS_SYNTHESIZED, recorder.mouse_event_flags().back());
1090   recorder.Reset();
1091
1092   // Set window to ignore events.
1093   window->set_ignore_events(true);
1094
1095   // Update the window bounds so that cursor is back inside the window.
1096   // This should not trigger a synthetic event.
1097   gfx::Rect bounds2(5, 5, 100, 100);
1098   window->SetBounds(bounds2);
1099   RunAllPendingInMessageLoop();
1100   EXPECT_TRUE(recorder.events().empty());
1101   recorder.Reset();
1102
1103   // Set window to accept events but invisible.
1104   window->set_ignore_events(false);
1105   window->Hide();
1106   recorder.Reset();
1107
1108   // Update the window bounds so that cursor is outside the window.
1109   // This should not trigger a synthetic event.
1110   window->SetBounds(bounds1);
1111   RunAllPendingInMessageLoop();
1112   EXPECT_TRUE(recorder.events().empty());
1113 }
1114
1115 // Tests that a mouse exit is dispatched to the last known cursor location
1116 // when the cursor becomes invisible.
1117 TEST_F(WindowEventDispatcherTest, DispatchMouseExitWhenCursorHidden) {
1118   EventFilterRecorder recorder;
1119   root_window()->AddPreTargetHandler(&recorder);
1120
1121   test::TestWindowDelegate delegate;
1122   gfx::Point window_origin(7, 18);
1123   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1124       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
1125       root_window()));
1126   window->Show();
1127
1128   // Dispatch a mouse move event into the window.
1129   gfx::Point mouse_location(gfx::Point(15, 25));
1130   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location, mouse_location,
1131                         ui::EventTimeForNow(), 0, 0);
1132   EXPECT_TRUE(recorder.events().empty());
1133   DispatchEventUsingWindowDispatcher(&mouse1);
1134   EXPECT_FALSE(recorder.events().empty());
1135   recorder.Reset();
1136
1137   // Hide the cursor and verify a mouse exit was dispatched.
1138   host()->OnCursorVisibilityChanged(false);
1139   EXPECT_FALSE(recorder.events().empty());
1140   EXPECT_EQ("MOUSE_EXITED", EventTypesToString(recorder.events()));
1141
1142   // Verify the mouse exit was dispatched at the correct location
1143   // (in the correct coordinate space).
1144   int translated_x = mouse_location.x() - window_origin.x();
1145   int translated_y = mouse_location.y() - window_origin.y();
1146   gfx::Point translated_point(translated_x, translated_y);
1147   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
1148   root_window()->RemovePreTargetHandler(&recorder);
1149 }
1150
1151 // Tests that a synthetic mouse exit is dispatched to the last known cursor
1152 // location after mouse events are disabled on the cursor client.
1153 TEST_F(WindowEventDispatcherTest,
1154        DispatchSyntheticMouseExitAfterMouseEventsDisabled) {
1155   EventFilterRecorder recorder;
1156   root_window()->AddPreTargetHandler(&recorder);
1157
1158   test::TestWindowDelegate delegate;
1159   gfx::Point window_origin(7, 18);
1160   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1161       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
1162       root_window()));
1163   window->Show();
1164
1165   // Dispatch a mouse move event into the window.
1166   gfx::Point mouse_location(gfx::Point(15, 25));
1167   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location, mouse_location,
1168                         ui::EventTimeForNow(), 0, 0);
1169   EXPECT_TRUE(recorder.events().empty());
1170   DispatchEventUsingWindowDispatcher(&mouse1);
1171   EXPECT_FALSE(recorder.events().empty());
1172   recorder.Reset();
1173
1174   test::TestCursorClient cursor_client(root_window());
1175   cursor_client.DisableMouseEvents();
1176
1177   gfx::Point mouse_exit_location(gfx::Point(150, 150));
1178   ui::MouseEvent mouse2(ui::ET_MOUSE_EXITED, gfx::Point(150, 150),
1179                         gfx::Point(150, 150), ui::EventTimeForNow(),
1180                         ui::EF_IS_SYNTHESIZED, 0);
1181   DispatchEventUsingWindowDispatcher(&mouse2);
1182
1183   EXPECT_FALSE(recorder.events().empty());
1184   // We get the mouse exited event twice in our filter. Once during the
1185   // predispatch phase and during the actual dispatch.
1186   EXPECT_EQ("MOUSE_EXITED MOUSE_EXITED", EventTypesToString(recorder.events()));
1187
1188   // Verify the mouse exit was dispatched at the correct location
1189   // (in the correct coordinate space).
1190   int translated_x = mouse_exit_location.x() - window_origin.x();
1191   int translated_y = mouse_exit_location.y() - window_origin.y();
1192   gfx::Point translated_point(translated_x, translated_y);
1193   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
1194   root_window()->RemovePreTargetHandler(&recorder);
1195 }
1196
1197 class DeletingEventFilter : public ui::EventHandler {
1198  public:
1199   DeletingEventFilter()
1200       : delete_during_pre_handle_(false) {}
1201   ~DeletingEventFilter() override {}
1202
1203   void Reset(bool delete_during_pre_handle) {
1204     delete_during_pre_handle_ = delete_during_pre_handle;
1205   }
1206
1207  private:
1208   // Overridden from ui::EventHandler:
1209   void OnKeyEvent(ui::KeyEvent* event) override {
1210     if (delete_during_pre_handle_)
1211       delete event->target();
1212   }
1213
1214   void OnMouseEvent(ui::MouseEvent* event) override {
1215     if (delete_during_pre_handle_)
1216       delete event->target();
1217   }
1218
1219   bool delete_during_pre_handle_;
1220
1221   DISALLOW_COPY_AND_ASSIGN(DeletingEventFilter);
1222 };
1223
1224 class DeletingWindowDelegate : public test::TestWindowDelegate {
1225  public:
1226   DeletingWindowDelegate()
1227       : window_(NULL),
1228         delete_during_handle_(false),
1229         got_event_(false) {}
1230   ~DeletingWindowDelegate() override {}
1231
1232   void Reset(Window* window, bool delete_during_handle) {
1233     window_ = window;
1234     delete_during_handle_ = delete_during_handle;
1235     got_event_ = false;
1236   }
1237   bool got_event() const { return got_event_; }
1238
1239  private:
1240   // Overridden from WindowDelegate:
1241   void OnKeyEvent(ui::KeyEvent* event) override {
1242     if (delete_during_handle_)
1243       delete window_;
1244     got_event_ = true;
1245   }
1246
1247   void OnMouseEvent(ui::MouseEvent* event) override {
1248     if (delete_during_handle_)
1249       delete window_;
1250     got_event_ = true;
1251   }
1252
1253   Window* window_;
1254   bool delete_during_handle_;
1255   bool got_event_;
1256
1257   DISALLOW_COPY_AND_ASSIGN(DeletingWindowDelegate);
1258 };
1259
1260 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringDispatch) {
1261   // Verifies that we can delete a window during each phase of event handling.
1262   // Deleting the window should not cause a crash, only prevent further
1263   // processing from occurring.
1264   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1265   DeletingWindowDelegate d11;
1266   Window* w11 = CreateNormalWindow(11, w1.get(), &d11);
1267   WindowTracker tracker;
1268   DeletingEventFilter w1_filter;
1269   w1->AddPreTargetHandler(&w1_filter);
1270   client::GetFocusClient(w1.get())->FocusWindow(w11);
1271
1272   ui::test::EventGenerator generator(root_window(), w11);
1273
1274   // First up, no one deletes anything.
1275   tracker.Add(w11);
1276   d11.Reset(w11, false);
1277
1278   generator.PressLeftButton();
1279   EXPECT_TRUE(tracker.Contains(w11));
1280   EXPECT_TRUE(d11.got_event());
1281   generator.ReleaseLeftButton();
1282
1283   // Delegate deletes w11. This will prevent the post-handle step from applying.
1284   w1_filter.Reset(false);
1285   d11.Reset(w11, true);
1286   generator.PressKey(ui::VKEY_A, 0);
1287   EXPECT_FALSE(tracker.Contains(w11));
1288   EXPECT_TRUE(d11.got_event());
1289
1290   // Pre-handle step deletes w11. This will prevent the delegate and the post-
1291   // handle steps from applying.
1292   w11 = CreateNormalWindow(11, w1.get(), &d11);
1293   w1_filter.Reset(true);
1294   d11.Reset(w11, false);
1295   generator.PressLeftButton();
1296   EXPECT_FALSE(tracker.Contains(w11));
1297   EXPECT_FALSE(d11.got_event());
1298 }
1299
1300 namespace {
1301
1302 // A window delegate that detaches the parent of the target's parent window when
1303 // it receives a tap event.
1304 class DetachesParentOnTapDelegate : public test::TestWindowDelegate {
1305  public:
1306   DetachesParentOnTapDelegate() {}
1307   ~DetachesParentOnTapDelegate() override {}
1308
1309  private:
1310   void OnGestureEvent(ui::GestureEvent* event) override {
1311     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1312       event->SetHandled();
1313       return;
1314     }
1315
1316     if (event->type() == ui::ET_GESTURE_TAP) {
1317       Window* parent = static_cast<Window*>(event->target())->parent();
1318       parent->parent()->RemoveChild(parent);
1319       event->SetHandled();
1320     }
1321   }
1322
1323   DISALLOW_COPY_AND_ASSIGN(DetachesParentOnTapDelegate);
1324 };
1325
1326 }  // namespace
1327
1328 // Tests that the gesture recognizer is reset for all child windows when a
1329 // window hides. No expectations, just checks that the test does not crash.
1330 TEST_F(WindowEventDispatcherTest,
1331        GestureRecognizerResetsTargetWhenParentHides) {
1332   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1333   DetachesParentOnTapDelegate delegate;
1334   scoped_ptr<Window> parent(CreateNormalWindow(22, w1.get(), NULL));
1335   Window* child = CreateNormalWindow(11, parent.get(), &delegate);
1336   ui::test::EventGenerator generator(root_window(), child);
1337   generator.GestureTapAt(gfx::Point(40, 40));
1338 }
1339
1340 namespace {
1341
1342 // A window delegate that processes nested gestures on tap.
1343 class NestedGestureDelegate : public test::TestWindowDelegate {
1344  public:
1345   NestedGestureDelegate(ui::test::EventGenerator* generator,
1346                         const gfx::Point tap_location)
1347       : generator_(generator),
1348         tap_location_(tap_location),
1349         gesture_end_count_(0) {}
1350   ~NestedGestureDelegate() override {}
1351
1352   int gesture_end_count() const { return gesture_end_count_; }
1353
1354  private:
1355   void OnGestureEvent(ui::GestureEvent* event) override {
1356     switch (event->type()) {
1357       case ui::ET_GESTURE_TAP_DOWN:
1358         event->SetHandled();
1359         break;
1360       case ui::ET_GESTURE_TAP:
1361         if (generator_)
1362           generator_->GestureTapAt(tap_location_);
1363         event->SetHandled();
1364         break;
1365       case ui::ET_GESTURE_END:
1366         ++gesture_end_count_;
1367         break;
1368       default:
1369         break;
1370     }
1371   }
1372
1373   ui::test::EventGenerator* generator_;
1374   const gfx::Point tap_location_;
1375   int gesture_end_count_;
1376   DISALLOW_COPY_AND_ASSIGN(NestedGestureDelegate);
1377 };
1378
1379 }  // namespace
1380
1381 // Tests that gesture end is delivered after nested gesture processing.
1382 TEST_F(WindowEventDispatcherTest, GestureEndDeliveredAfterNestedGestures) {
1383   NestedGestureDelegate d1(NULL, gfx::Point());
1384   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &d1));
1385   w1->SetBounds(gfx::Rect(0, 0, 100, 100));
1386
1387   ui::test::EventGenerator nested_generator(root_window(), w1.get());
1388   NestedGestureDelegate d2(&nested_generator, w1->bounds().CenterPoint());
1389   scoped_ptr<Window> w2(CreateNormalWindow(1, root_window(), &d2));
1390   w2->SetBounds(gfx::Rect(100, 0, 100, 100));
1391
1392   // Tap on w2 which triggers nested gestures for w1.
1393   ui::test::EventGenerator generator(root_window(), w2.get());
1394   generator.GestureTapAt(w2->bounds().CenterPoint());
1395
1396   // Both windows should get their gesture end events.
1397   EXPECT_EQ(1, d1.gesture_end_count());
1398   EXPECT_EQ(1, d2.gesture_end_count());
1399 }
1400
1401 // Tests whether we can repost the Tap down gesture event.
1402 TEST_F(WindowEventDispatcherTest, RepostTapdownGestureTest) {
1403   EventFilterRecorder recorder;
1404   root_window()->AddPreTargetHandler(&recorder);
1405
1406   test::TestWindowDelegate delegate;
1407   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1408       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1409
1410   ui::GestureEventDetails details(ui::ET_GESTURE_TAP_DOWN);
1411   gfx::Point point(10, 10);
1412   ui::GestureEvent event(point.x(),
1413                          point.y(),
1414                          0,
1415                          ui::EventTimeForNow(),
1416                          details);
1417   host()->dispatcher()->RepostEvent(event);
1418   RunAllPendingInMessageLoop();
1419   // TODO(rbyers): Currently disabled - crbug.com/170987
1420   EXPECT_FALSE(EventTypesToString(recorder.events()).find("GESTURE_TAP_DOWN") !=
1421               std::string::npos);
1422   recorder.Reset();
1423   root_window()->RemovePreTargetHandler(&recorder);
1424 }
1425
1426 // This class inherits from the EventFilterRecorder class which provides a
1427 // facility to record events. This class additionally provides a facility to
1428 // repost the ET_GESTURE_TAP_DOWN gesture to the target window and records
1429 // events after that.
1430 class RepostGestureEventRecorder : public EventFilterRecorder {
1431  public:
1432   RepostGestureEventRecorder(aura::Window* repost_source,
1433                              aura::Window* repost_target)
1434       : repost_source_(repost_source),
1435         repost_target_(repost_target),
1436         reposted_(false),
1437         done_cleanup_(false) {}
1438
1439   ~RepostGestureEventRecorder() override {}
1440
1441   void OnTouchEvent(ui::TouchEvent* event) override {
1442     if (reposted_ && event->type() == ui::ET_TOUCH_PRESSED) {
1443       done_cleanup_ = true;
1444       Reset();
1445     }
1446     EventFilterRecorder::OnTouchEvent(event);
1447   }
1448
1449   void OnGestureEvent(ui::GestureEvent* event) override {
1450     EXPECT_EQ(done_cleanup_ ? repost_target_ : repost_source_, event->target());
1451     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1452       if (!reposted_) {
1453         EXPECT_NE(repost_target_, event->target());
1454         reposted_ = true;
1455         repost_target_->GetHost()->dispatcher()->RepostEvent(*event);
1456         // Ensure that the reposted gesture event above goes to the
1457         // repost_target_;
1458         repost_source_->GetRootWindow()->RemoveChild(repost_source_);
1459         return;
1460       }
1461     }
1462     EventFilterRecorder::OnGestureEvent(event);
1463   }
1464
1465   // Ignore mouse events as they don't fire at all times. This causes
1466   // the GestureRepostEventOrder test to fail randomly.
1467   void OnMouseEvent(ui::MouseEvent* event) override {}
1468
1469  private:
1470   aura::Window* repost_source_;
1471   aura::Window* repost_target_;
1472   // set to true if we reposted the ET_GESTURE_TAP_DOWN event.
1473   bool reposted_;
1474   // set true if we're done cleaning up after hiding repost_source_;
1475   bool done_cleanup_;
1476   DISALLOW_COPY_AND_ASSIGN(RepostGestureEventRecorder);
1477 };
1478
1479 // Tests whether events which are generated after the reposted gesture event
1480 // are received after that. In this case the scroll sequence events should
1481 // be received after the reposted gesture event.
1482 TEST_F(WindowEventDispatcherTest, GestureRepostEventOrder) {
1483   // Expected events at the end for the repost_target window defined below.
1484   const char kExpectedTargetEvents[] =
1485     // TODO)(rbyers): Gesture event reposting is disabled - crbug.com/279039.
1486     // "GESTURE_BEGIN GESTURE_TAP_DOWN "
1487     "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1488     "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE TOUCH_MOVED "
1489     "GESTURE_SCROLL_UPDATE TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
1490     "GESTURE_SCROLL_END GESTURE_END";
1491   // We create two windows.
1492   // The first window (repost_source) is the one to which the initial tap
1493   // gesture is sent. It reposts this event to the second window
1494   // (repost_target).
1495   // We then generate the scroll sequence for repost_target and look for two
1496   // ET_GESTURE_TAP_DOWN events in the event list at the end.
1497   test::TestWindowDelegate delegate;
1498   scoped_ptr<aura::Window> repost_target(CreateTestWindowWithDelegate(
1499       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1500
1501   scoped_ptr<aura::Window> repost_source(CreateTestWindowWithDelegate(
1502       &delegate, 1, gfx::Rect(0, 0, 50, 50), root_window()));
1503
1504   RepostGestureEventRecorder repost_event_recorder(repost_source.get(),
1505                                                    repost_target.get());
1506   root_window()->AddPreTargetHandler(&repost_event_recorder);
1507
1508   // Generate a tap down gesture for the repost_source. This will be reposted
1509   // to repost_target.
1510   ui::test::EventGenerator repost_generator(root_window(), repost_source.get());
1511   repost_generator.GestureTapAt(gfx::Point(40, 40));
1512   RunAllPendingInMessageLoop();
1513
1514   ui::test::EventGenerator scroll_generator(root_window(), repost_target.get());
1515   scroll_generator.GestureScrollSequence(
1516       gfx::Point(80, 80),
1517       gfx::Point(100, 100),
1518       base::TimeDelta::FromMilliseconds(100),
1519       3);
1520   RunAllPendingInMessageLoop();
1521
1522   int tap_down_count = 0;
1523   for (size_t i = 0; i < repost_event_recorder.events().size(); ++i) {
1524     if (repost_event_recorder.events()[i] == ui::ET_GESTURE_TAP_DOWN)
1525       ++tap_down_count;
1526   }
1527
1528   // We expect two tap down events. One from the repost and the other one from
1529   // the scroll sequence posted above.
1530   // TODO(rbyers): Currently disabled - crbug.com/170987
1531   EXPECT_EQ(1, tap_down_count);
1532
1533   EXPECT_EQ(kExpectedTargetEvents,
1534             EventTypesToString(repost_event_recorder.events()));
1535   root_window()->RemovePreTargetHandler(&repost_event_recorder);
1536 }
1537
1538 class OnMouseExitDeletingEventFilter : public EventFilterRecorder {
1539  public:
1540   OnMouseExitDeletingEventFilter() : window_to_delete_(NULL) {}
1541   ~OnMouseExitDeletingEventFilter() override {}
1542
1543   void set_window_to_delete(Window* window_to_delete) {
1544     window_to_delete_ = window_to_delete;
1545   }
1546
1547  private:
1548   // Overridden from ui::EventHandler:
1549   void OnMouseEvent(ui::MouseEvent* event) override {
1550     EventFilterRecorder::OnMouseEvent(event);
1551     if (window_to_delete_) {
1552       delete window_to_delete_;
1553       window_to_delete_ = NULL;
1554     }
1555   }
1556
1557   Window* window_to_delete_;
1558
1559   DISALLOW_COPY_AND_ASSIGN(OnMouseExitDeletingEventFilter);
1560 };
1561
1562 // Tests that RootWindow drops mouse-moved event that is supposed to be sent to
1563 // a child, but the child is destroyed because of the synthesized mouse-exit
1564 // event generated on the previous mouse_moved_handler_.
1565 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringMouseMovedDispatch) {
1566   // Create window 1 and set its event filter. Window 1 will take ownership of
1567   // the event filter.
1568   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1569   OnMouseExitDeletingEventFilter w1_filter;
1570   w1->AddPreTargetHandler(&w1_filter);
1571   w1->SetBounds(gfx::Rect(20, 20, 60, 60));
1572   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1573
1574   ui::test::EventGenerator generator(root_window(), w1.get());
1575
1576   // Move mouse over window 1 to set it as the |mouse_moved_handler_| for the
1577   // root window.
1578   generator.MoveMouseTo(51, 51);
1579   EXPECT_EQ(w1.get(), host()->dispatcher()->mouse_moved_handler());
1580
1581   // Create window 2 under the mouse cursor and stack it above window 1.
1582   Window* w2 = CreateNormalWindow(2, root_window(), NULL);
1583   w2->SetBounds(gfx::Rect(30, 30, 40, 40));
1584   root_window()->StackChildAbove(w2, w1.get());
1585
1586   // Set window 2 as the window that is to be deleted when a mouse-exited event
1587   // happens on window 1.
1588   w1_filter.set_window_to_delete(w2);
1589
1590   // Move mosue over window 2. This should generate a mouse-exited event for
1591   // window 1 resulting in deletion of window 2. The original mouse-moved event
1592   // that was targeted to window 2 should be dropped since window 2 is
1593   // destroyed. This test passes if no crash happens.
1594   generator.MoveMouseTo(52, 52);
1595   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1596
1597   // Check events received by window 1.
1598   EXPECT_EQ("MOUSE_ENTERED MOUSE_MOVED MOUSE_EXITED",
1599             EventTypesToString(w1_filter.events()));
1600 }
1601
1602 namespace {
1603
1604 // Used to track if OnWindowDestroying() is invoked and if there is a valid
1605 // RootWindow at such time.
1606 class ValidRootDuringDestructionWindowObserver : public aura::WindowObserver {
1607  public:
1608   ValidRootDuringDestructionWindowObserver(bool* got_destroying,
1609                                            bool* has_valid_root)
1610       : got_destroying_(got_destroying),
1611         has_valid_root_(has_valid_root) {
1612   }
1613
1614   // WindowObserver:
1615   void OnWindowDestroying(aura::Window* window) override {
1616     *got_destroying_ = true;
1617     *has_valid_root_ = (window->GetRootWindow() != NULL);
1618   }
1619
1620  private:
1621   bool* got_destroying_;
1622   bool* has_valid_root_;
1623
1624   DISALLOW_COPY_AND_ASSIGN(ValidRootDuringDestructionWindowObserver);
1625 };
1626
1627 }  // namespace
1628
1629 // Verifies GetRootWindow() from ~Window returns a valid root.
1630 TEST_F(WindowEventDispatcherTest, ValidRootDuringDestruction) {
1631   bool got_destroying = false;
1632   bool has_valid_root = false;
1633   ValidRootDuringDestructionWindowObserver observer(&got_destroying,
1634                                                     &has_valid_root);
1635   {
1636     scoped_ptr<WindowTreeHost> host(
1637         WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100)));
1638     host->InitHost();
1639     // Owned by WindowEventDispatcher.
1640     Window* w1 = CreateNormalWindow(1, host->window(), NULL);
1641     w1->AddObserver(&observer);
1642   }
1643   EXPECT_TRUE(got_destroying);
1644   EXPECT_TRUE(has_valid_root);
1645 }
1646
1647 namespace {
1648
1649 // See description above DontResetHeldEvent for details.
1650 class DontResetHeldEventWindowDelegate : public test::TestWindowDelegate {
1651  public:
1652   explicit DontResetHeldEventWindowDelegate(aura::Window* root)
1653       : root_(root),
1654         mouse_event_count_(0) {}
1655   ~DontResetHeldEventWindowDelegate() override {}
1656
1657   int mouse_event_count() const { return mouse_event_count_; }
1658
1659   // TestWindowDelegate:
1660   void OnMouseEvent(ui::MouseEvent* event) override {
1661     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0 &&
1662         mouse_event_count_++ == 0) {
1663       ui::MouseEvent mouse_event(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
1664                                  gfx::Point(10, 10), ui::EventTimeForNow(),
1665                                  ui::EF_SHIFT_DOWN, 0);
1666       root_->GetHost()->dispatcher()->RepostEvent(mouse_event);
1667     }
1668   }
1669
1670  private:
1671   Window* root_;
1672   int mouse_event_count_;
1673
1674   DISALLOW_COPY_AND_ASSIGN(DontResetHeldEventWindowDelegate);
1675 };
1676
1677 }  // namespace
1678
1679 // Verifies RootWindow doesn't reset |RootWindow::held_repostable_event_| after
1680 // dispatching. This is done by using DontResetHeldEventWindowDelegate, which
1681 // tracks the number of events with ui::EF_SHIFT_DOWN set (all reposted events
1682 // have EF_SHIFT_DOWN). When the first event is seen RepostEvent() is used to
1683 // schedule another reposted event.
1684 TEST_F(WindowEventDispatcherTest, DontResetHeldEvent) {
1685   DontResetHeldEventWindowDelegate delegate(root_window());
1686   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &delegate));
1687   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1688   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
1689                          gfx::Point(10, 10), ui::EventTimeForNow(),
1690                          ui::EF_SHIFT_DOWN, 0);
1691   root_window()->GetHost()->dispatcher()->RepostEvent(pressed);
1692   ui::MouseEvent pressed2(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
1693                           gfx::Point(10, 10), ui::EventTimeForNow(), 0, 0);
1694   // Dispatch an event to flush event scheduled by way of RepostEvent().
1695   DispatchEventUsingWindowDispatcher(&pressed2);
1696   // Delegate should have seen reposted event (identified by way of
1697   // EF_SHIFT_DOWN). Dispatch another event to flush the second
1698   // RepostedEvent().
1699   EXPECT_EQ(1, delegate.mouse_event_count());
1700   DispatchEventUsingWindowDispatcher(&pressed2);
1701   EXPECT_EQ(2, delegate.mouse_event_count());
1702 }
1703
1704 namespace {
1705
1706 // See description above DeleteHostFromHeldMouseEvent for details.
1707 class DeleteHostFromHeldMouseEventDelegate
1708     : public test::TestWindowDelegate {
1709  public:
1710   explicit DeleteHostFromHeldMouseEventDelegate(WindowTreeHost* host)
1711       : host_(host),
1712         got_mouse_event_(false),
1713         got_destroy_(false) {
1714   }
1715   ~DeleteHostFromHeldMouseEventDelegate() override {}
1716
1717   bool got_mouse_event() const { return got_mouse_event_; }
1718   bool got_destroy() const { return got_destroy_; }
1719
1720   // TestWindowDelegate:
1721   void OnMouseEvent(ui::MouseEvent* event) override {
1722     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0) {
1723       got_mouse_event_ = true;
1724       delete host_;
1725     }
1726   }
1727   void OnWindowDestroyed(Window* window) override { got_destroy_ = true; }
1728
1729  private:
1730   WindowTreeHost* host_;
1731   bool got_mouse_event_;
1732   bool got_destroy_;
1733
1734   DISALLOW_COPY_AND_ASSIGN(DeleteHostFromHeldMouseEventDelegate);
1735 };
1736
1737 }  // namespace
1738
1739 // Verifies if a WindowTreeHost is deleted from dispatching a held mouse event
1740 // we don't crash.
1741 TEST_F(WindowEventDispatcherTest, DeleteHostFromHeldMouseEvent) {
1742   // Should be deleted by |delegate|.
1743   WindowTreeHost* h2 = WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100));
1744   h2->InitHost();
1745   DeleteHostFromHeldMouseEventDelegate delegate(h2);
1746   // Owned by |h2|.
1747   Window* w1 = CreateNormalWindow(1, h2->window(), &delegate);
1748   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1749   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
1750                          gfx::Point(10, 10), ui::EventTimeForNow(),
1751                          ui::EF_SHIFT_DOWN, 0);
1752   h2->dispatcher()->RepostEvent(pressed);
1753   // RunAllPendingInMessageLoop() to make sure the |pressed| is run.
1754   RunAllPendingInMessageLoop();
1755   EXPECT_TRUE(delegate.got_mouse_event());
1756   EXPECT_TRUE(delegate.got_destroy());
1757 }
1758
1759 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveTouches) {
1760   EventFilterRecorder recorder;
1761   root_window()->AddPreTargetHandler(&recorder);
1762
1763   test::TestWindowDelegate delegate;
1764   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1765       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1766
1767   gfx::Point position1 = root_window()->bounds().origin();
1768   ui::TouchEvent press(
1769       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1770   DispatchEventUsingWindowDispatcher(&press);
1771
1772   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN",
1773             EventTypesToString(recorder.GetAndResetEvents()));
1774
1775   window->Hide();
1776
1777   EXPECT_EQ(ui::ET_TOUCH_CANCELLED, recorder.events()[0]);
1778   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_TAP_CANCEL));
1779   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_END));
1780   EXPECT_EQ(3U, recorder.events().size());
1781   root_window()->RemovePreTargetHandler(&recorder);
1782 }
1783
1784 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveGestures) {
1785   EventFilterRecorder recorder;
1786   root_window()->AddPreTargetHandler(&recorder);
1787
1788   test::TestWindowDelegate delegate;
1789   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1790       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1791
1792   gfx::Point position1 = root_window()->bounds().origin();
1793   gfx::Point position2 = root_window()->bounds().CenterPoint();
1794   ui::TouchEvent press(
1795       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1796   DispatchEventUsingWindowDispatcher(&press);
1797
1798   ui::TouchEvent move(
1799       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1800   DispatchEventUsingWindowDispatcher(&move);
1801
1802   ui::TouchEvent press2(
1803       ui::ET_TOUCH_PRESSED, position1, 1, ui::EventTimeForNow());
1804   DispatchEventUsingWindowDispatcher(&press2);
1805
1806   // TODO(tdresser): once the unified Gesture Recognizer has stuck, remove the
1807   // special casing here. See crbug.com/332418 for details.
1808   std::string expected =
1809       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1810       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1811       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_PINCH_BEGIN";
1812
1813   std::string expected_ugr =
1814       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1815       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1816       "TOUCH_PRESSED GESTURE_BEGIN";
1817
1818   std::string events_string = EventTypesToString(recorder.GetAndResetEvents());
1819   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1820
1821   window->Hide();
1822
1823   expected =
1824       "TOUCH_CANCELLED GESTURE_PINCH_END GESTURE_END TOUCH_CANCELLED "
1825       "GESTURE_SCROLL_END GESTURE_END";
1826   expected_ugr =
1827       "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END TOUCH_CANCELLED "
1828       "GESTURE_END";
1829
1830   events_string = EventTypesToString(recorder.GetAndResetEvents());
1831   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1832
1833   root_window()->RemovePreTargetHandler(&recorder);
1834 }
1835
1836 // Places two windows side by side. Presses down on one window, and starts a
1837 // scroll. Sets capture on the other window and ensures that the "ending" events
1838 // aren't sent to the window which gained capture.
1839 TEST_F(WindowEventDispatcherTest, EndingEventDoesntRetarget) {
1840   EventFilterRecorder recorder1;
1841   EventFilterRecorder recorder2;
1842   scoped_ptr<Window> window1(CreateNormalWindow(1, root_window(), NULL));
1843   window1->SetBounds(gfx::Rect(0, 0, 40, 40));
1844
1845   scoped_ptr<Window> window2(CreateNormalWindow(2, root_window(), NULL));
1846   window2->SetBounds(gfx::Rect(40, 0, 40, 40));
1847
1848   window1->AddPreTargetHandler(&recorder1);
1849   window2->AddPreTargetHandler(&recorder2);
1850
1851   gfx::Point position = window1->bounds().origin();
1852   ui::TouchEvent press(
1853       ui::ET_TOUCH_PRESSED, position, 0, ui::EventTimeForNow());
1854   DispatchEventUsingWindowDispatcher(&press);
1855
1856   gfx::Point position2 = window1->bounds().CenterPoint();
1857   ui::TouchEvent move(
1858       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1859   DispatchEventUsingWindowDispatcher(&move);
1860
1861   window2->SetCapture();
1862
1863   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1864             "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1865             "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END",
1866             EventTypesToString(recorder1.events()));
1867
1868   EXPECT_TRUE(recorder2.events().empty());
1869 }
1870
1871 namespace {
1872
1873 // This class creates and manages a window which is destroyed as soon as
1874 // capture is lost. This is the case for the drag and drop capture window.
1875 class CaptureWindowTracker : public test::TestWindowDelegate {
1876  public:
1877   CaptureWindowTracker() {}
1878   ~CaptureWindowTracker() override {}
1879
1880   void CreateCaptureWindow(aura::Window* root_window) {
1881     capture_window_.reset(test::CreateTestWindowWithDelegate(
1882         this, -1234, gfx::Rect(20, 20, 20, 20), root_window));
1883     capture_window_->SetCapture();
1884   }
1885
1886   void reset() {
1887     capture_window_.reset();
1888   }
1889
1890   void OnCaptureLost() override { capture_window_.reset(); }
1891
1892   void OnWindowDestroyed(Window* window) override {
1893     TestWindowDelegate::OnWindowDestroyed(window);
1894     capture_window_.reset();
1895   }
1896
1897   aura::Window* capture_window() { return capture_window_.get(); }
1898
1899  private:
1900   scoped_ptr<aura::Window> capture_window_;
1901
1902   DISALLOW_COPY_AND_ASSIGN(CaptureWindowTracker);
1903 };
1904
1905 }
1906
1907 // Verifies handling loss of capture by the capture window being hidden.
1908 TEST_F(WindowEventDispatcherTest, CaptureWindowHidden) {
1909   CaptureWindowTracker capture_window_tracker;
1910   capture_window_tracker.CreateCaptureWindow(root_window());
1911   capture_window_tracker.capture_window()->Hide();
1912   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1913 }
1914
1915 // Verifies handling loss of capture by the capture window being destroyed.
1916 TEST_F(WindowEventDispatcherTest, CaptureWindowDestroyed) {
1917   CaptureWindowTracker capture_window_tracker;
1918   capture_window_tracker.CreateCaptureWindow(root_window());
1919   capture_window_tracker.reset();
1920   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1921 }
1922
1923 class ExitMessageLoopOnMousePress : public ui::test::TestEventHandler {
1924  public:
1925   ExitMessageLoopOnMousePress() {}
1926   ~ExitMessageLoopOnMousePress() override {}
1927
1928  protected:
1929   void OnMouseEvent(ui::MouseEvent* event) override {
1930     ui::test::TestEventHandler::OnMouseEvent(event);
1931     if (event->type() == ui::ET_MOUSE_PRESSED)
1932       base::MessageLoopForUI::current()->Quit();
1933   }
1934
1935  private:
1936   DISALLOW_COPY_AND_ASSIGN(ExitMessageLoopOnMousePress);
1937 };
1938
1939 class WindowEventDispatcherTestWithMessageLoop
1940     : public WindowEventDispatcherTest {
1941  public:
1942   WindowEventDispatcherTestWithMessageLoop() {}
1943   ~WindowEventDispatcherTestWithMessageLoop() override {}
1944
1945   void RunTest() {
1946     // Reset any event the window may have received when bringing up the window
1947     // (e.g. mouse-move events if the mouse cursor is over the window).
1948     handler_.Reset();
1949
1950     // Start a nested message-loop, post an event to be dispatched, and then
1951     // terminate the message-loop. When the message-loop unwinds and gets back,
1952     // the reposted event should not have fired.
1953     scoped_ptr<ui::MouseEvent> mouse(new ui::MouseEvent(
1954         ui::ET_MOUSE_PRESSED, gfx::Point(10, 10), gfx::Point(10, 10),
1955         ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE));
1956     message_loop()->PostTask(
1957         FROM_HERE,
1958         base::Bind(&WindowEventDispatcherTestWithMessageLoop::RepostEventHelper,
1959                    host()->dispatcher(),
1960                    base::Passed(&mouse)));
1961     message_loop()->PostTask(FROM_HERE, message_loop()->QuitClosure());
1962
1963     base::MessageLoop::ScopedNestableTaskAllower allow(message_loop());
1964     base::RunLoop loop;
1965     loop.Run();
1966     EXPECT_EQ(0, handler_.num_mouse_events());
1967
1968     // Let the current message-loop run. The event-handler will terminate the
1969     // message-loop when it receives the reposted event.
1970   }
1971
1972   base::MessageLoop* message_loop() {
1973     return base::MessageLoopForUI::current();
1974   }
1975
1976  protected:
1977   void SetUp() override {
1978     WindowEventDispatcherTest::SetUp();
1979     window_.reset(CreateNormalWindow(1, root_window(), NULL));
1980     window_->AddPreTargetHandler(&handler_);
1981   }
1982
1983   void TearDown() override {
1984     window_.reset();
1985     WindowEventDispatcherTest::TearDown();
1986   }
1987
1988  private:
1989   // Used to avoid a copying |event| when binding to a closure.
1990   static void RepostEventHelper(WindowEventDispatcher* dispatcher,
1991                                 scoped_ptr<ui::MouseEvent> event) {
1992     dispatcher->RepostEvent(*event);
1993   }
1994
1995   scoped_ptr<Window> window_;
1996   ExitMessageLoopOnMousePress handler_;
1997
1998   DISALLOW_COPY_AND_ASSIGN(WindowEventDispatcherTestWithMessageLoop);
1999 };
2000
2001 TEST_F(WindowEventDispatcherTestWithMessageLoop, EventRepostedInNonNestedLoop) {
2002   CHECK(!message_loop()->is_running());
2003   // Perform the test in a callback, so that it runs after the message-loop
2004   // starts.
2005   message_loop()->PostTask(
2006       FROM_HERE, base::Bind(
2007           &WindowEventDispatcherTestWithMessageLoop::RunTest,
2008           base::Unretained(this)));
2009   message_loop()->Run();
2010 }
2011
2012 class WindowEventDispatcherTestInHighDPI : public WindowEventDispatcherTest {
2013  public:
2014   WindowEventDispatcherTestInHighDPI() {}
2015   ~WindowEventDispatcherTestInHighDPI() override {}
2016
2017   void DispatchEvent(ui::Event* event) {
2018     DispatchEventUsingWindowDispatcher(event);
2019   }
2020
2021  protected:
2022   void SetUp() override {
2023     WindowEventDispatcherTest::SetUp();
2024     test_screen()->SetDeviceScaleFactor(2.f);
2025   }
2026 };
2027
2028 TEST_F(WindowEventDispatcherTestInHighDPI, EventLocationTransform) {
2029   test::TestWindowDelegate delegate;
2030   scoped_ptr<aura::Window> child(test::CreateTestWindowWithDelegate(&delegate,
2031       1234, gfx::Rect(20, 20, 100, 100), root_window()));
2032   child->Show();
2033
2034   ui::test::TestEventHandler handler_child;
2035   ui::test::TestEventHandler handler_root;
2036   root_window()->AddPreTargetHandler(&handler_root);
2037   child->AddPreTargetHandler(&handler_child);
2038
2039   {
2040     ui::MouseEvent move(ui::ET_MOUSE_MOVED, gfx::Point(30, 30),
2041                         gfx::Point(30, 30), ui::EventTimeForNow(), ui::EF_NONE,
2042                         ui::EF_NONE);
2043     DispatchEventUsingWindowDispatcher(&move);
2044     EXPECT_EQ(0, handler_child.num_mouse_events());
2045     EXPECT_EQ(1, handler_root.num_mouse_events());
2046   }
2047
2048   {
2049     ui::MouseEvent move(ui::ET_MOUSE_MOVED, gfx::Point(50, 50),
2050                         gfx::Point(50, 50), ui::EventTimeForNow(), ui::EF_NONE,
2051                         ui::EF_NONE);
2052     DispatchEventUsingWindowDispatcher(&move);
2053     // The child receives an ENTER, and a MOVED event.
2054     EXPECT_EQ(2, handler_child.num_mouse_events());
2055     // The root receives both the ENTER and the MOVED events dispatched to
2056     // |child|, as well as an EXIT event.
2057     EXPECT_EQ(3, handler_root.num_mouse_events());
2058   }
2059
2060   child->RemovePreTargetHandler(&handler_child);
2061   root_window()->RemovePreTargetHandler(&handler_root);
2062 }
2063
2064 TEST_F(WindowEventDispatcherTestInHighDPI, TouchMovesHeldOnScroll) {
2065   EventFilterRecorder recorder;
2066   root_window()->AddPreTargetHandler(&recorder);
2067   test::TestWindowDelegate delegate;
2068   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
2069   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
2070       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
2071   window->AddPreTargetHandler(&handler);
2072
2073   ui::test::EventGenerator generator(root_window());
2074   generator.GestureScrollSequence(
2075       gfx::Point(120, 120), gfx::Point(20, 120),
2076       base::TimeDelta::FromMilliseconds(100), 25);
2077
2078   // |handler| will have reset |filter| and started holding the touch-move
2079   // events when scrolling started. At the end of the scroll (i.e. upon
2080   // touch-release), the held touch-move event will have been dispatched first,
2081   // along with the subsequent events (i.e. touch-release, scroll-end, and
2082   // gesture-end).
2083   const EventFilterRecorder::Events& events = recorder.events();
2084   EXPECT_EQ(
2085       "TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
2086       "GESTURE_SCROLL_END GESTURE_END",
2087       EventTypesToString(events));
2088   ASSERT_EQ(2u, recorder.touch_locations().size());
2089   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
2090             recorder.touch_locations()[0].ToString());
2091   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
2092             recorder.touch_locations()[1].ToString());
2093   root_window()->RemovePreTargetHandler(&recorder);
2094 }
2095
2096 // This handler triggers a nested message loop when it receives a right click
2097 // event, and runs a single callback in the nested message loop.
2098 class TriggerNestedLoopOnRightMousePress : public ui::test::TestEventHandler {
2099  public:
2100   explicit TriggerNestedLoopOnRightMousePress(const base::Closure& callback)
2101       : callback_(callback) {}
2102   ~TriggerNestedLoopOnRightMousePress() override {}
2103
2104   const gfx::Point mouse_move_location() const { return mouse_move_location_; }
2105
2106  private:
2107   void OnMouseEvent(ui::MouseEvent* mouse) override {
2108     TestEventHandler::OnMouseEvent(mouse);
2109     if (mouse->type() == ui::ET_MOUSE_PRESSED &&
2110         mouse->IsOnlyRightMouseButton()) {
2111       base::MessageLoop::ScopedNestableTaskAllower allow(
2112           base::MessageLoopForUI::current());
2113       base::RunLoop run_loop;
2114       scoped_refptr<base::TaskRunner> task_runner =
2115           base::ThreadTaskRunnerHandle::Get();
2116       if (!callback_.is_null())
2117         task_runner->PostTask(FROM_HERE, callback_);
2118       task_runner->PostTask(FROM_HERE, run_loop.QuitClosure());
2119       run_loop.Run();
2120     } else if (mouse->type() == ui::ET_MOUSE_MOVED) {
2121       mouse_move_location_ = mouse->location();
2122     }
2123   }
2124
2125   base::Closure callback_;
2126   gfx::Point mouse_move_location_;
2127
2128   DISALLOW_COPY_AND_ASSIGN(TriggerNestedLoopOnRightMousePress);
2129 };
2130
2131 // Tests that if dispatching a 'held' event triggers a nested message loop, then
2132 // the events that are dispatched from the nested message loop are transformed
2133 // correctly.
2134 TEST_F(WindowEventDispatcherTestInHighDPI,
2135        EventsTransformedInRepostedEventTriggeredNestedLoop) {
2136   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), NULL));
2137   // Make sure the window is visible.
2138   RunAllPendingInMessageLoop();
2139
2140   ui::MouseEvent mouse_move(ui::ET_MOUSE_MOVED, gfx::Point(80, 80),
2141                             gfx::Point(80, 80), ui::EventTimeForNow(),
2142                             ui::EF_NONE, ui::EF_NONE);
2143   const base::Closure callback_on_right_click = base::Bind(
2144       base::IgnoreResult(&WindowEventDispatcherTestInHighDPI::DispatchEvent),
2145       base::Unretained(this), base::Unretained(&mouse_move));
2146   TriggerNestedLoopOnRightMousePress handler(callback_on_right_click);
2147   window->AddPreTargetHandler(&handler);
2148
2149   scoped_ptr<ui::MouseEvent> mouse(
2150       new ui::MouseEvent(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
2151                          gfx::Point(10, 10), ui::EventTimeForNow(),
2152                          ui::EF_RIGHT_MOUSE_BUTTON, ui::EF_RIGHT_MOUSE_BUTTON));
2153   host()->dispatcher()->RepostEvent(*mouse);
2154   EXPECT_EQ(0, handler.num_mouse_events());
2155
2156   base::RunLoop run_loop;
2157   run_loop.RunUntilIdle();
2158   // The window should receive the mouse-press and the mouse-move events.
2159   EXPECT_EQ(2, handler.num_mouse_events());
2160   // The mouse-move event location should be transformed because of the DSF
2161   // before it reaches the window.
2162   EXPECT_EQ(gfx::Point(40, 40).ToString(),
2163             handler.mouse_move_location().ToString());
2164   EXPECT_EQ(gfx::Point(40, 40).ToString(),
2165             Env::GetInstance()->last_mouse_location().ToString());
2166   window->RemovePreTargetHandler(&handler);
2167 }
2168
2169 class SelfDestructDelegate : public test::TestWindowDelegate {
2170  public:
2171   SelfDestructDelegate() {}
2172   ~SelfDestructDelegate() override {}
2173
2174   void OnMouseEvent(ui::MouseEvent* event) override { window_.reset(); }
2175
2176   void set_window(scoped_ptr<aura::Window> window) {
2177     window_ = window.Pass();
2178   }
2179   bool has_window() const { return !!window_.get(); }
2180
2181  private:
2182   scoped_ptr<aura::Window> window_;
2183   DISALLOW_COPY_AND_ASSIGN(SelfDestructDelegate);
2184 };
2185
2186 TEST_F(WindowEventDispatcherTest, SynthesizedLocatedEvent) {
2187   ui::test::EventGenerator generator(root_window());
2188   generator.MoveMouseTo(10, 10);
2189   EXPECT_EQ("10,10",
2190             Env::GetInstance()->last_mouse_location().ToString());
2191
2192   // Synthesized event should not update the mouse location.
2193   ui::MouseEvent mouseev(ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(),
2194                          ui::EventTimeForNow(), ui::EF_IS_SYNTHESIZED, 0);
2195   generator.Dispatch(&mouseev);
2196   EXPECT_EQ("10,10",
2197             Env::GetInstance()->last_mouse_location().ToString());
2198
2199   generator.MoveMouseTo(0, 0);
2200   EXPECT_EQ("0,0",
2201             Env::GetInstance()->last_mouse_location().ToString());
2202
2203   // Make sure the location gets updated when a syntheiszed enter
2204   // event destroyed the window.
2205   SelfDestructDelegate delegate;
2206   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
2207       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
2208   delegate.set_window(window.Pass());
2209   EXPECT_TRUE(delegate.has_window());
2210
2211   generator.MoveMouseTo(100, 100);
2212   EXPECT_FALSE(delegate.has_window());
2213   EXPECT_EQ("100,100",
2214             Env::GetInstance()->last_mouse_location().ToString());
2215 }
2216
2217 // Tests that the window which has capture can get destroyed as a result of
2218 // ui::ET_MOUSE_CAPTURE_CHANGED event dispatched in
2219 // WindowEventDispatcher::UpdateCapture without causing a "use after free".
2220 TEST_F(WindowEventDispatcherTest, DestroyWindowOnCaptureChanged) {
2221   SelfDestructDelegate delegate;
2222   scoped_ptr<aura::Window> window_first(CreateTestWindowWithDelegate(
2223       &delegate, 1, gfx::Rect(20, 10, 10, 20), root_window()));
2224   Window* window_first_raw = window_first.get();
2225   window_first->Show();
2226   window_first->SetCapture();
2227   delegate.set_window(window_first.Pass());
2228   EXPECT_TRUE(delegate.has_window());
2229
2230   scoped_ptr<aura::Window> window_second(
2231       test::CreateTestWindowWithId(2, root_window()));
2232   window_second->Show();
2233
2234   client::CaptureDelegate* capture_delegate = host()->dispatcher();
2235   capture_delegate->UpdateCapture(window_first_raw, window_second.get());
2236   EXPECT_FALSE(delegate.has_window());
2237 }
2238
2239 class StaticFocusClient : public client::FocusClient {
2240  public:
2241   explicit StaticFocusClient(Window* focused)
2242       : focused_(focused) {}
2243   ~StaticFocusClient() override {}
2244
2245  private:
2246   // client::FocusClient:
2247   void AddObserver(client::FocusChangeObserver* observer) override {}
2248   void RemoveObserver(client::FocusChangeObserver* observer) override {}
2249   void FocusWindow(Window* window) override {}
2250   void ResetFocusWithinActiveWindow(Window* window) override {}
2251   Window* GetFocusedWindow() override { return focused_; }
2252
2253   Window* focused_;
2254
2255   DISALLOW_COPY_AND_ASSIGN(StaticFocusClient);
2256 };
2257
2258 // Tests that host-cancel-mode event can be dispatched to a dispatcher safely
2259 // when the focused window does not live in the dispatcher's tree.
2260 TEST_F(WindowEventDispatcherTest, HostCancelModeWithFocusedWindowOutside) {
2261   test::TestWindowDelegate delegate;
2262   scoped_ptr<Window> focused(CreateTestWindowWithDelegate(&delegate, 123,
2263       gfx::Rect(20, 30, 100, 50), NULL));
2264   StaticFocusClient focus_client(focused.get());
2265   client::SetFocusClient(root_window(), &focus_client);
2266   EXPECT_FALSE(root_window()->Contains(focused.get()));
2267   EXPECT_EQ(focused.get(),
2268             client::GetFocusClient(root_window())->GetFocusedWindow());
2269   host()->dispatcher()->DispatchCancelModeEvent();
2270   EXPECT_EQ(focused.get(),
2271             client::GetFocusClient(root_window())->GetFocusedWindow());
2272 }
2273
2274 // Dispatches a mouse-move event to |target| when it receives a mouse-move
2275 // event.
2276 class DispatchEventHandler : public ui::EventHandler {
2277  public:
2278   explicit DispatchEventHandler(Window* target)
2279       : target_(target),
2280         dispatched_(false) {}
2281   ~DispatchEventHandler() override {}
2282
2283   bool dispatched() const { return dispatched_; }
2284  private:
2285   // ui::EventHandler:
2286   void OnMouseEvent(ui::MouseEvent* mouse) override {
2287     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2288       ui::MouseEvent move(ui::ET_MOUSE_MOVED, target_->bounds().CenterPoint(),
2289                           target_->bounds().CenterPoint(),
2290                           ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
2291       ui::EventDispatchDetails details =
2292           target_->GetHost()->dispatcher()->OnEventFromSource(&move);
2293       ASSERT_FALSE(details.dispatcher_destroyed);
2294       EXPECT_FALSE(details.target_destroyed);
2295       EXPECT_EQ(target_, move.target());
2296       dispatched_ = true;
2297     }
2298     ui::EventHandler::OnMouseEvent(mouse);
2299   }
2300
2301   Window* target_;
2302   bool dispatched_;
2303
2304   DISALLOW_COPY_AND_ASSIGN(DispatchEventHandler);
2305 };
2306
2307 // Moves |window| to |root_window| when it receives a mouse-move event.
2308 class MoveWindowHandler : public ui::EventHandler {
2309  public:
2310   MoveWindowHandler(Window* window, Window* root_window)
2311       : window_to_move_(window),
2312         root_window_to_move_to_(root_window) {}
2313   ~MoveWindowHandler() override {}
2314
2315  private:
2316   // ui::EventHandler:
2317   void OnMouseEvent(ui::MouseEvent* mouse) override {
2318     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2319       root_window_to_move_to_->AddChild(window_to_move_);
2320     }
2321     ui::EventHandler::OnMouseEvent(mouse);
2322   }
2323
2324   Window* window_to_move_;
2325   Window* root_window_to_move_to_;
2326
2327   DISALLOW_COPY_AND_ASSIGN(MoveWindowHandler);
2328 };
2329
2330 // Tests that nested event dispatch works correctly if the target of the older
2331 // event being dispatched is moved to a different dispatcher in response to an
2332 // event in the inner loop.
2333 TEST_F(WindowEventDispatcherTest, NestedEventDispatchTargetMoved) {
2334   scoped_ptr<WindowTreeHost> second_host(
2335       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2336   second_host->InitHost();
2337   Window* second_root = second_host->window();
2338
2339   // Create two windows parented to |root_window()|.
2340   test::TestWindowDelegate delegate;
2341   scoped_ptr<Window> first(CreateTestWindowWithDelegate(&delegate, 123,
2342       gfx::Rect(20, 10, 10, 20), root_window()));
2343   scoped_ptr<Window> second(CreateTestWindowWithDelegate(&delegate, 234,
2344       gfx::Rect(40, 10, 50, 20), root_window()));
2345
2346   // Setup a handler on |first| so that it dispatches an event to |second| when
2347   // |first| receives an event.
2348   DispatchEventHandler dispatch_event(second.get());
2349   first->AddPreTargetHandler(&dispatch_event);
2350
2351   // Setup a handler on |second| so that it moves |first| into |second_root|
2352   // when |second| receives an event.
2353   MoveWindowHandler move_window(first.get(), second_root);
2354   second->AddPreTargetHandler(&move_window);
2355
2356   // Some sanity checks: |first| is inside |root_window()|'s tree.
2357   EXPECT_EQ(root_window(), first->GetRootWindow());
2358   // The two root windows are different.
2359   EXPECT_NE(root_window(), second_root);
2360
2361   // Dispatch an event to |first|.
2362   ui::MouseEvent move(ui::ET_MOUSE_MOVED, first->bounds().CenterPoint(),
2363                       first->bounds().CenterPoint(), ui::EventTimeForNow(),
2364                       ui::EF_NONE, ui::EF_NONE);
2365   ui::EventDispatchDetails details =
2366       host()->dispatcher()->OnEventFromSource(&move);
2367   ASSERT_FALSE(details.dispatcher_destroyed);
2368   EXPECT_TRUE(details.target_destroyed);
2369   EXPECT_EQ(first.get(), move.target());
2370   EXPECT_TRUE(dispatch_event.dispatched());
2371   EXPECT_EQ(second_root, first->GetRootWindow());
2372
2373   first->RemovePreTargetHandler(&dispatch_event);
2374   second->RemovePreTargetHandler(&move_window);
2375 }
2376
2377 class AlwaysMouseDownInputStateLookup : public InputStateLookup {
2378  public:
2379   AlwaysMouseDownInputStateLookup() {}
2380   ~AlwaysMouseDownInputStateLookup() override {}
2381
2382  private:
2383   // InputStateLookup:
2384   bool IsMouseButtonDown() const override { return true; }
2385
2386   DISALLOW_COPY_AND_ASSIGN(AlwaysMouseDownInputStateLookup);
2387 };
2388
2389 TEST_F(WindowEventDispatcherTest,
2390        CursorVisibilityChangedWhileCaptureWindowInAnotherDispatcher) {
2391   test::EventCountDelegate delegate;
2392   scoped_ptr<Window> window(CreateTestWindowWithDelegate(&delegate, 123,
2393       gfx::Rect(20, 10, 10, 20), root_window()));
2394   window->Show();
2395
2396   scoped_ptr<WindowTreeHost> second_host(
2397       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2398   second_host->InitHost();
2399   WindowEventDispatcher* second_dispatcher = second_host->dispatcher();
2400
2401   // Install an InputStateLookup on the Env that always claims that a
2402   // mouse-button is down.
2403   test::EnvTestHelper(Env::GetInstance()).SetInputStateLookup(
2404       scoped_ptr<InputStateLookup>(new AlwaysMouseDownInputStateLookup()));
2405
2406   window->SetCapture();
2407
2408   // Because the mouse button is down, setting the capture on |window| will set
2409   // it as the mouse-move handler for |root_window()|.
2410   EXPECT_EQ(window.get(), host()->dispatcher()->mouse_moved_handler());
2411
2412   // This does not set |window| as the mouse-move handler for the second
2413   // dispatcher.
2414   EXPECT_EQ(NULL, second_dispatcher->mouse_moved_handler());
2415
2416   // However, some capture-client updates the capture in each root-window on a
2417   // capture. Emulate that here. Because of this, the second dispatcher also has
2418   // |window| as the mouse-move handler.
2419   client::CaptureDelegate* second_capture_delegate = second_dispatcher;
2420   second_capture_delegate->UpdateCapture(NULL, window.get());
2421   EXPECT_EQ(window.get(), second_dispatcher->mouse_moved_handler());
2422
2423   // Reset the mouse-event counts for |window|.
2424   delegate.GetMouseMotionCountsAndReset();
2425
2426   // Notify both hosts that the cursor is now hidden. This should send a single
2427   // mouse-exit event to |window|.
2428   host()->OnCursorVisibilityChanged(false);
2429   second_host->OnCursorVisibilityChanged(false);
2430   EXPECT_EQ("0 0 1", delegate.GetMouseMotionCountsAndReset());
2431 }
2432
2433 TEST_F(WindowEventDispatcherTest,
2434        RedirectedEventToDifferentDispatcherLocation) {
2435   scoped_ptr<WindowTreeHost> second_host(
2436       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2437   second_host->InitHost();
2438   client::SetCaptureClient(second_host->window(),
2439                            client::GetCaptureClient(root_window()));
2440
2441   test::EventCountDelegate delegate;
2442   scoped_ptr<Window> window_first(CreateTestWindowWithDelegate(&delegate, 123,
2443       gfx::Rect(20, 10, 10, 20), root_window()));
2444   window_first->Show();
2445
2446   scoped_ptr<Window> window_second(CreateTestWindowWithDelegate(&delegate, 12,
2447       gfx::Rect(10, 10, 20, 30), second_host->window()));
2448   window_second->Show();
2449
2450   window_second->SetCapture();
2451   EXPECT_EQ(window_second.get(),
2452             client::GetCaptureWindow(root_window()));
2453
2454   // Send an event to the first host. Make sure it goes to |window_second| in
2455   // |second_host| instead (since it has capture).
2456   EventFilterRecorder recorder_first;
2457   window_first->AddPreTargetHandler(&recorder_first);
2458   EventFilterRecorder recorder_second;
2459   window_second->AddPreTargetHandler(&recorder_second);
2460   const gfx::Point event_location(25, 15);
2461   ui::MouseEvent mouse(ui::ET_MOUSE_PRESSED, event_location, event_location,
2462                        ui::EventTimeForNow(), ui::EF_LEFT_MOUSE_BUTTON,
2463                        ui::EF_LEFT_MOUSE_BUTTON);
2464   DispatchEventUsingWindowDispatcher(&mouse);
2465   EXPECT_TRUE(recorder_first.events().empty());
2466   ASSERT_EQ(1u, recorder_second.events().size());
2467   EXPECT_EQ(ui::ET_MOUSE_PRESSED, recorder_second.events()[0]);
2468   EXPECT_EQ(event_location.ToString(),
2469             recorder_second.mouse_locations()[0].ToString());
2470 }
2471
2472 class AsyncWindowDelegate : public test::TestWindowDelegate {
2473  public:
2474   AsyncWindowDelegate(WindowEventDispatcher* dispatcher)
2475       : dispatcher_(dispatcher), window_(nullptr) {}
2476
2477   void set_window(Window* window) {
2478     window_ = window;
2479   }
2480  private:
2481   void OnTouchEvent(ui::TouchEvent* event) override {
2482     // Convert touch event back to root window coordinates.
2483     event->ConvertLocationToTarget(window_, window_->GetRootWindow());
2484     event->DisableSynchronousHandling();
2485     dispatcher_->ProcessedTouchEvent(event->unique_event_id(), window_,
2486                                      ui::ER_UNHANDLED);
2487     event->StopPropagation();
2488   }
2489
2490   WindowEventDispatcher* dispatcher_;
2491   Window* window_;
2492
2493   DISALLOW_COPY_AND_ASSIGN(AsyncWindowDelegate);
2494 };
2495
2496 // Tests that gesture events dispatched through the asynchronous flow have
2497 // co-ordinates in the right co-ordinate space.
2498 TEST_F(WindowEventDispatcherTest, GestureEventCoordinates) {
2499   const float kX = 67.3f;
2500   const float kY = 97.8f;
2501
2502   const int kWindowOffset = 50;
2503   EventFilterRecorder recorder;
2504   root_window()->AddPreTargetHandler(&recorder);
2505   AsyncWindowDelegate delegate(host()->dispatcher());
2506   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
2507   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
2508       &delegate,
2509       1,
2510       gfx::Rect(kWindowOffset, kWindowOffset, 100, 100),
2511       root_window()));
2512   window->AddPreTargetHandler(&handler);
2513
2514   delegate.set_window(window.get());
2515
2516   ui::TouchEvent touch_pressed_event(
2517       ui::ET_TOUCH_PRESSED, gfx::PointF(kX, kY), 0, ui::EventTimeForNow());
2518
2519   DispatchEventUsingWindowDispatcher(&touch_pressed_event);
2520
2521   ASSERT_EQ(1u, recorder.touch_locations().size());
2522   EXPECT_EQ(gfx::Point(kX - kWindowOffset, kY - kWindowOffset).ToString(),
2523             recorder.touch_locations()[0].ToString());
2524
2525   ASSERT_EQ(2u, recorder.gesture_locations().size());
2526   EXPECT_EQ(gfx::Point(kX - kWindowOffset, kY - kWindowOffset).ToString(),
2527             recorder.gesture_locations()[0].ToString());
2528   root_window()->RemovePreTargetHandler(&recorder);
2529 }
2530
2531 // Tests that a scroll-generating touch-event is marked as such.
2532 TEST_F(WindowEventDispatcherTest, TouchMovesMarkedWhenCausingScroll) {
2533   EventFilterRecorder recorder;
2534   root_window()->AddPreTargetHandler(&recorder);
2535
2536   const gfx::Point location(20, 20);
2537   ui::TouchEvent press(
2538       ui::ET_TOUCH_PRESSED, location, 0, ui::EventTimeForNow());
2539   DispatchEventUsingWindowDispatcher(&press);
2540   EXPECT_FALSE(recorder.LastTouchMayCauseScrolling());
2541   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_PRESSED));
2542   recorder.Reset();
2543
2544   ui::TouchEvent move(ui::ET_TOUCH_MOVED,
2545                       location + gfx::Vector2d(100, 100),
2546                       0,
2547                       ui::EventTimeForNow());
2548   DispatchEventUsingWindowDispatcher(&move);
2549   EXPECT_TRUE(recorder.LastTouchMayCauseScrolling());
2550   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
2551   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_BEGIN));
2552   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_UPDATE));
2553   recorder.Reset();
2554
2555   ui::TouchEvent move2(ui::ET_TOUCH_MOVED,
2556                        location + gfx::Vector2d(200, 200),
2557                        0,
2558                        ui::EventTimeForNow());
2559   DispatchEventUsingWindowDispatcher(&move2);
2560   EXPECT_TRUE(recorder.LastTouchMayCauseScrolling());
2561   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
2562   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_UPDATE));
2563   recorder.Reset();
2564
2565   // Delay the release to avoid fling generation.
2566   ui::TouchEvent release(
2567       ui::ET_TOUCH_RELEASED,
2568       location + gfx::Vector2dF(200, 200),
2569       0,
2570       ui::EventTimeForNow() + base::TimeDelta::FromSeconds(1));
2571   DispatchEventUsingWindowDispatcher(&release);
2572   EXPECT_FALSE(recorder.LastTouchMayCauseScrolling());
2573   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_RELEASED));
2574   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_END));
2575
2576   root_window()->RemovePreTargetHandler(&recorder);
2577 }
2578
2579 // OnCursorMovedToRootLocation() is sometimes called instead of
2580 // WindowTreeHost::MoveCursorTo() when the cursor did not move but the
2581 // cursor's position in root coordinates has changed (e.g. when the displays's
2582 // scale factor changed). Test that hover effects are properly updated.
2583 TEST_F(WindowEventDispatcherTest, OnCursorMovedToRootLocationUpdatesHover) {
2584   WindowEventDispatcher* dispatcher = host()->dispatcher();
2585
2586   scoped_ptr<Window> w(CreateNormalWindow(1, root_window(), nullptr));
2587   w->SetBounds(gfx::Rect(20, 20, 20, 20));
2588   w->Show();
2589
2590   // Move the cursor off of |w|.
2591   dispatcher->OnCursorMovedToRootLocation(gfx::Point(100, 100));
2592
2593   EventFilterRecorder recorder;
2594   w->AddPreTargetHandler(&recorder);
2595   dispatcher->OnCursorMovedToRootLocation(gfx::Point(22, 22));
2596   RunAllPendingInMessageLoop();
2597   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_MOUSE_ENTERED));
2598   recorder.Reset();
2599
2600   // The cursor should not be over |w| after changing the device scale factor to
2601   // 2x. A ET_MOUSE_EXITED event should have been sent to |w|.
2602   test_screen()->SetDeviceScaleFactor(2.f);
2603   dispatcher->OnCursorMovedToRootLocation(gfx::Point(11, 11));
2604   RunAllPendingInMessageLoop();
2605   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_MOUSE_EXITED));
2606
2607   w->RemovePreTargetHandler(&recorder);
2608 }
2609
2610 }  // namespace aura