src/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 "testing/gtest/include/gtest/gtest.h"
  12 #include "ui/aura/client/event_client.h"
  13 #include "ui/aura/client/focus_client.h"
  14 #include "ui/aura/env.h"
  15 #include "ui/aura/test/aura_test_base.h"
  16 #include "ui/aura/test/env_test_helper.h"
  17 #include "ui/aura/test/event_generator.h"
  18 #include "ui/aura/test/test_cursor_client.h"
  19 #include "ui/aura/test/test_screen.h"
  20 #include "ui/aura/test/test_window_delegate.h"
  21 #include "ui/aura/test/test_windows.h"
  22 #include "ui/aura/window.h"
  23 #include "ui/aura/window_tracker.h"
  24 #include "ui/base/hit_test.h"
  25 #include "ui/events/event.h"
  26 #include "ui/events/event_handler.h"
  27 #include "ui/events/event_utils.h"
  28 #include "ui/events/gestures/gesture_configuration.h"
  29 #include "ui/events/keycodes/keyboard_codes.h"
  30 #include "ui/events/test/test_event_handler.h"
  31 #include "ui/gfx/point.h"
  32 #include "ui/gfx/rect.h"
  33 #include "ui/gfx/screen.h"
  34 #include "ui/gfx/transform.h"
  35
  36 namespace aura {
  37 namespace {
  38
  39 // A delegate that always returns a non-client component for hit tests.
  40 class NonClientDelegate : public test::TestWindowDelegate {
  41  public:
  42   NonClientDelegate()
  43       : non_client_count_(0),
  44         mouse_event_count_(0),
  45         mouse_event_flags_(0x0) {
  46   }
  47   virtual ~NonClientDelegate() {}
  48
  49   int non_client_count() const { return non_client_count_; }
  50   gfx::Point non_client_location() const { return non_client_location_; }
  51   int mouse_event_count() const { return mouse_event_count_; }
  52   gfx::Point mouse_event_location() const { return mouse_event_location_; }
  53   int mouse_event_flags() const { return mouse_event_flags_; }
  54
  55   virtual int GetNonClientComponent(const gfx::Point& location) const OVERRIDE {
  56     NonClientDelegate* self = const_cast<NonClientDelegate*>(this);
  57     self->non_client_count_++;
  58     self->non_client_location_ = location;
  59     return HTTOPLEFT;
  60   }
  61   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
  62     mouse_event_count_++;
  63     mouse_event_location_ = event->location();
  64     mouse_event_flags_ = event->flags();
  65     event->SetHandled();
  66   }
  67
  68  private:
  69   int non_client_count_;
  70   gfx::Point non_client_location_;
  71   int mouse_event_count_;
  72   gfx::Point mouse_event_location_;
  73   int mouse_event_flags_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(NonClientDelegate);
  76 };
  77
  78 // A simple event handler that consumes key events.
  79 class ConsumeKeyHandler : public ui::test::TestEventHandler {
  80  public:
  81   ConsumeKeyHandler() {}
  82   virtual ~ConsumeKeyHandler() {}
  83
  84   // Overridden from ui::EventHandler:
  85   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
  86     ui::test::TestEventHandler::OnKeyEvent(event);
  87     event->StopPropagation();
  88   }
  89
  90  private:
  91   DISALLOW_COPY_AND_ASSIGN(ConsumeKeyHandler);
  92 };
  93
  94 bool IsFocusedWindow(aura::Window* window) {
  95   return client::GetFocusClient(window)->GetFocusedWindow() == window;
  96 }
  97
  98 }  // namespace
  99
 100 typedef test::AuraTestBase WindowEventDispatcherTest;
 101
 102 TEST_F(WindowEventDispatcherTest, OnHostMouseEvent) {
 103   // Create two non-overlapping windows so we don't have to worry about which
 104   // is on top.
 105   scoped_ptr<NonClientDelegate> delegate1(new NonClientDelegate());
 106   scoped_ptr<NonClientDelegate> delegate2(new NonClientDelegate());
 107   const int kWindowWidth = 123;
 108   const int kWindowHeight = 45;
 109   gfx::Rect bounds1(100, 200, kWindowWidth, kWindowHeight);
 110   gfx::Rect bounds2(300, 400, kWindowWidth, kWindowHeight);
 111   scoped_ptr<aura::Window> window1(CreateTestWindowWithDelegate(
 112       delegate1.get(), -1234, bounds1, root_window()));
 113   scoped_ptr<aura::Window> window2(CreateTestWindowWithDelegate(
 114       delegate2.get(), -5678, bounds2, root_window()));
 115
 116   // Send a mouse event to window1.
 117   gfx::Point point(101, 201);
 118   ui::MouseEvent event1(
 119       ui::ET_MOUSE_PRESSED, point, point, ui::EF_LEFT_MOUSE_BUTTON,
 120       ui::EF_LEFT_MOUSE_BUTTON);
 121   DispatchEventUsingWindowDispatcher(&event1);
 122
 123   // Event was tested for non-client area for the target window.
 124   EXPECT_EQ(1, delegate1->non_client_count());
 125   EXPECT_EQ(0, delegate2->non_client_count());
 126   // The non-client component test was in local coordinates.
 127   EXPECT_EQ(gfx::Point(1, 1), delegate1->non_client_location());
 128   // Mouse event was received by target window.
 129   EXPECT_EQ(1, delegate1->mouse_event_count());
 130   EXPECT_EQ(0, delegate2->mouse_event_count());
 131   // Event was in local coordinates.
 132   EXPECT_EQ(gfx::Point(1, 1), delegate1->mouse_event_location());
 133   // Non-client flag was set.
 134   EXPECT_TRUE(delegate1->mouse_event_flags() & ui::EF_IS_NON_CLIENT);
 135 }
 136
 137 TEST_F(WindowEventDispatcherTest, RepostEvent) {
 138   // Test RepostEvent in RootWindow. It only works for Mouse Press.
 139   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 140   gfx::Point point(10, 10);
 141   ui::MouseEvent event(
 142       ui::ET_MOUSE_PRESSED, point, point, ui::EF_LEFT_MOUSE_BUTTON,
 143       ui::EF_LEFT_MOUSE_BUTTON);
 144   host()->dispatcher()->RepostEvent(event);
 145   RunAllPendingInMessageLoop();
 146   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 147 }
 148
 149 // Check that we correctly track the state of the mouse buttons in response to
 150 // button press and release events.
 151 TEST_F(WindowEventDispatcherTest, MouseButtonState) {
 152   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 153
 154   gfx::Point location;
 155   scoped_ptr<ui::MouseEvent> event;
 156
 157   // Press the left button.
 158   event.reset(new ui::MouseEvent(
 159       ui::ET_MOUSE_PRESSED,
 160       location,
 161       location,
 162       ui::EF_LEFT_MOUSE_BUTTON,
 163       ui::EF_LEFT_MOUSE_BUTTON));
 164   DispatchEventUsingWindowDispatcher(event.get());
 165   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 166
 167   // Additionally press the right.
 168   event.reset(new ui::MouseEvent(
 169       ui::ET_MOUSE_PRESSED,
 170       location,
 171       location,
 172       ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON,
 173       ui::EF_RIGHT_MOUSE_BUTTON));
 174   DispatchEventUsingWindowDispatcher(event.get());
 175   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 176
 177   // Release the left button.
 178   event.reset(new ui::MouseEvent(
 179       ui::ET_MOUSE_RELEASED,
 180       location,
 181       location,
 182       ui::EF_RIGHT_MOUSE_BUTTON,
 183       ui::EF_LEFT_MOUSE_BUTTON));
 184   DispatchEventUsingWindowDispatcher(event.get());
 185   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 186
 187   // Release the right button.  We should ignore the Shift-is-down flag.
 188   event.reset(new ui::MouseEvent(
 189       ui::ET_MOUSE_RELEASED,
 190       location,
 191       location,
 192       ui::EF_SHIFT_DOWN,
 193       ui::EF_RIGHT_MOUSE_BUTTON));
 194   DispatchEventUsingWindowDispatcher(event.get());
 195   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 196
 197   // Press the middle button.
 198   event.reset(new ui::MouseEvent(
 199       ui::ET_MOUSE_PRESSED,
 200       location,
 201       location,
 202       ui::EF_MIDDLE_MOUSE_BUTTON,
 203       ui::EF_MIDDLE_MOUSE_BUTTON));
 204   DispatchEventUsingWindowDispatcher(event.get());
 205   EXPECT_TRUE(Env::GetInstance()->IsMouseButtonDown());
 206 }
 207
 208 TEST_F(WindowEventDispatcherTest, TranslatedEvent) {
 209   scoped_ptr<Window> w1(test::CreateTestWindowWithDelegate(NULL, 1,
 210       gfx::Rect(50, 50, 100, 100), root_window()));
 211
 212   gfx::Point origin(100, 100);
 213   ui::MouseEvent root(ui::ET_MOUSE_PRESSED, origin, origin, 0, 0);
 214
 215   EXPECT_EQ("100,100", root.location().ToString());
 216   EXPECT_EQ("100,100", root.root_location().ToString());
 217
 218   ui::MouseEvent translated_event(
 219       root, static_cast<Window*>(root_window()), w1.get(),
 220       ui::ET_MOUSE_ENTERED, root.flags());
 221   EXPECT_EQ("50,50", translated_event.location().ToString());
 222   EXPECT_EQ("100,100", translated_event.root_location().ToString());
 223 }
 224
 225 namespace {
 226
 227 class TestEventClient : public client::EventClient {
 228  public:
 229   static const int kNonLockWindowId = 100;
 230   static const int kLockWindowId = 200;
 231
 232   explicit TestEventClient(Window* root_window)
 233       : root_window_(root_window),
 234         lock_(false) {
 235     client::SetEventClient(root_window_, this);
 236     Window* lock_window =
 237         test::CreateTestWindowWithBounds(root_window_->bounds(), root_window_);
 238     lock_window->set_id(kLockWindowId);
 239     Window* non_lock_window =
 240         test::CreateTestWindowWithBounds(root_window_->bounds(), root_window_);
 241     non_lock_window->set_id(kNonLockWindowId);
 242   }
 243   virtual ~TestEventClient() {
 244     client::SetEventClient(root_window_, NULL);
 245   }
 246
 247   // Starts/stops locking. Locking prevents windows other than those inside
 248   // the lock container from receiving events, getting focus etc.
 249   void Lock() {
 250     lock_ = true;
 251   }
 252   void Unlock() {
 253     lock_ = false;
 254   }
 255
 256   Window* GetLockWindow() {
 257     return const_cast<Window*>(
 258         static_cast<const TestEventClient*>(this)->GetLockWindow());
 259   }
 260   const Window* GetLockWindow() const {
 261     return root_window_->GetChildById(kLockWindowId);
 262   }
 263   Window* GetNonLockWindow() {
 264     return root_window_->GetChildById(kNonLockWindowId);
 265   }
 266
 267  private:
 268   // Overridden from client::EventClient:
 269   virtual bool CanProcessEventsWithinSubtree(
 270       const Window* window) const OVERRIDE {
 271     return lock_ ?
 272         window->Contains(GetLockWindow()) || GetLockWindow()->Contains(window) :
 273         true;
 274   }
 275
 276   virtual ui::EventTarget* GetToplevelEventTarget() OVERRIDE {
 277     return NULL;
 278   }
 279
 280   Window* root_window_;
 281   bool lock_;
 282
 283   DISALLOW_COPY_AND_ASSIGN(TestEventClient);
 284 };
 285
 286 }  // namespace
 287
 288 TEST_F(WindowEventDispatcherTest, CanProcessEventsWithinSubtree) {
 289   TestEventClient client(root_window());
 290   test::TestWindowDelegate d;
 291
 292   ui::test::TestEventHandler nonlock_ef;
 293   ui::test::TestEventHandler lock_ef;
 294   client.GetNonLockWindow()->AddPreTargetHandler(&nonlock_ef);
 295   client.GetLockWindow()->AddPreTargetHandler(&lock_ef);
 296
 297   Window* w1 = test::CreateTestWindowWithBounds(gfx::Rect(10, 10, 20, 20),
 298                                                 client.GetNonLockWindow());
 299   w1->set_id(1);
 300   Window* w2 = test::CreateTestWindowWithBounds(gfx::Rect(30, 30, 20, 20),
 301                                                 client.GetNonLockWindow());
 302   w2->set_id(2);
 303   scoped_ptr<Window> w3(
 304       test::CreateTestWindowWithDelegate(&d, 3, gfx::Rect(30, 30, 20, 20),
 305                                          client.GetLockWindow()));
 306
 307   w1->Focus();
 308   EXPECT_TRUE(IsFocusedWindow(w1));
 309
 310   client.Lock();
 311
 312   // Since we're locked, the attempt to focus w2 will be ignored.
 313   w2->Focus();
 314   EXPECT_TRUE(IsFocusedWindow(w1));
 315   EXPECT_FALSE(IsFocusedWindow(w2));
 316
 317   {
 318     // Attempting to send a key event to w1 (not in the lock container) should
 319     // cause focus to be reset.
 320     test::EventGenerator generator(root_window());
 321     generator.PressKey(ui::VKEY_SPACE, 0);
 322     EXPECT_EQ(NULL, client::GetFocusClient(w1)->GetFocusedWindow());
 323     EXPECT_FALSE(IsFocusedWindow(w1));
 324   }
 325
 326   {
 327     // Events sent to a window not in the lock container will not be processed.
 328     // i.e. never sent to the non-lock container's event filter.
 329     test::EventGenerator generator(root_window(), w1);
 330     generator.ClickLeftButton();
 331     EXPECT_EQ(0, nonlock_ef.num_mouse_events());
 332
 333     // Events sent to a window in the lock container will be processed.
 334     test::EventGenerator generator3(root_window(), w3.get());
 335     generator3.PressLeftButton();
 336     EXPECT_EQ(1, lock_ef.num_mouse_events());
 337   }
 338
 339   // Prevent w3 from being deleted by the hierarchy since its delegate is owned
 340   // by this scope.
 341   w3->parent()->RemoveChild(w3.get());
 342 }
 343
 344 TEST_F(WindowEventDispatcherTest, IgnoreUnknownKeys) {
 345   ConsumeKeyHandler handler;
 346   root_window()->AddPreTargetHandler(&handler);
 347
 348   ui::KeyEvent unknown_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN, 0, false);
 349   DispatchEventUsingWindowDispatcher(&unknown_event);
 350   EXPECT_FALSE(unknown_event.handled());
 351   EXPECT_EQ(0, handler.num_key_events());
 352
 353   handler.Reset();
 354   ui::KeyEvent known_event(ui::ET_KEY_PRESSED, ui::VKEY_A, 0, false);
 355   DispatchEventUsingWindowDispatcher(&known_event);
 356   EXPECT_TRUE(known_event.handled());
 357   EXPECT_EQ(1, handler.num_key_events());
 358
 359   handler.Reset();
 360   ui::KeyEvent ime_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN,
 361                          ui::EF_IME_FABRICATED_KEY, false);
 362   DispatchEventUsingWindowDispatcher(&ime_event);
 363   EXPECT_TRUE(ime_event.handled());
 364   EXPECT_EQ(1, handler.num_key_events());
 365
 366   handler.Reset();
 367   ui::KeyEvent unknown_key_with_char_event(ui::ET_KEY_PRESSED, ui::VKEY_UNKNOWN,
 368                                            0, false);
 369   unknown_key_with_char_event.set_character(0x00e4 /* "ä" */);
 370   DispatchEventUsingWindowDispatcher(&unknown_key_with_char_event);
 371   EXPECT_TRUE(unknown_key_with_char_event.handled());
 372   EXPECT_EQ(1, handler.num_key_events());
 373 }
 374
 375 TEST_F(WindowEventDispatcherTest, NoDelegateWindowReceivesKeyEvents) {
 376   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
 377   w1->Show();
 378   w1->Focus();
 379
 380   ui::test::TestEventHandler handler;
 381   w1->AddPreTargetHandler(&handler);
 382   ui::KeyEvent key_press(ui::ET_KEY_PRESSED, ui::VKEY_A, 0, false);
 383   DispatchEventUsingWindowDispatcher(&key_press);
 384   EXPECT_TRUE(key_press.handled());
 385   EXPECT_EQ(1, handler.num_key_events());
 386
 387   w1->RemovePreTargetHandler(&handler);
 388 }
 389
 390 // Tests that touch-events that are beyond the bounds of the root-window do get
 391 // propagated to the event filters correctly with the root as the target.
 392 TEST_F(WindowEventDispatcherTest, TouchEventsOutsideBounds) {
 393   ui::test::TestEventHandler handler;
 394   root_window()->AddPreTargetHandler(&handler);
 395
 396   gfx::Point position = root_window()->bounds().origin();
 397   position.Offset(-10, -10);
 398   ui::TouchEvent press(
 399       ui::ET_TOUCH_PRESSED, position, 0, ui::EventTimeForNow());
 400   DispatchEventUsingWindowDispatcher(&press);
 401   EXPECT_EQ(1, handler.num_touch_events());
 402
 403   position = root_window()->bounds().origin();
 404   position.Offset(root_window()->bounds().width() + 10,
 405                   root_window()->bounds().height() + 10);
 406   ui::TouchEvent release(
 407       ui::ET_TOUCH_RELEASED, position, 0, ui::EventTimeForNow());
 408   DispatchEventUsingWindowDispatcher(&release);
 409   EXPECT_EQ(2, handler.num_touch_events());
 410 }
 411
 412 // Tests that scroll events are dispatched correctly.
 413 TEST_F(WindowEventDispatcherTest, ScrollEventDispatch) {
 414   base::TimeDelta now = ui::EventTimeForNow();
 415   ui::test::TestEventHandler handler;
 416   root_window()->AddPreTargetHandler(&handler);
 417
 418   test::TestWindowDelegate delegate;
 419   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &delegate));
 420   w1->SetBounds(gfx::Rect(20, 20, 40, 40));
 421
 422   // A scroll event on the root-window itself is dispatched.
 423   ui::ScrollEvent scroll1(ui::ET_SCROLL,
 424                           gfx::Point(10, 10),
 425                           now,
 426                           0,
 427                           0, -10,
 428                           0, -10,
 429                           2);
 430   DispatchEventUsingWindowDispatcher(&scroll1);
 431   EXPECT_EQ(1, handler.num_scroll_events());
 432
 433   // Scroll event on a window should be dispatched properly.
 434   ui::ScrollEvent scroll2(ui::ET_SCROLL,
 435                           gfx::Point(25, 30),
 436                           now,
 437                           0,
 438                           -10, 0,
 439                           -10, 0,
 440                           2);
 441   DispatchEventUsingWindowDispatcher(&scroll2);
 442   EXPECT_EQ(2, handler.num_scroll_events());
 443   root_window()->RemovePreTargetHandler(&handler);
 444 }
 445
 446 namespace {
 447
 448 // FilterFilter that tracks the types of events it's seen.
 449 class EventFilterRecorder : public ui::EventHandler {
 450  public:
 451   typedef std::vector<ui::EventType> Events;
 452   typedef std::vector<gfx::Point> EventLocations;
 453   typedef std::vector<int> EventFlags;
 454
 455   EventFilterRecorder()
 456       : wait_until_event_(ui::ET_UNKNOWN) {
 457   }
 458
 459   const Events& events() const { return events_; }
 460
 461   const EventLocations& mouse_locations() const { return mouse_locations_; }
 462   gfx::Point mouse_location(int i) const { return mouse_locations_[i]; }
 463   const EventLocations& touch_locations() const { return touch_locations_; }
 464   const EventFlags& mouse_event_flags() const { return mouse_event_flags_; }
 465
 466   void WaitUntilReceivedEvent(ui::EventType type) {
 467     wait_until_event_ = type;
 468     run_loop_.reset(new base::RunLoop());
 469     run_loop_->Run();
 470   }
 471
 472   Events GetAndResetEvents() {
 473     Events events = events_;
 474     Reset();
 475     return events;
 476   }
 477
 478   void Reset() {
 479     events_.clear();
 480     mouse_locations_.clear();
 481     touch_locations_.clear();
 482     mouse_event_flags_.clear();
 483   }
 484
 485   // ui::EventHandler overrides:
 486   virtual void OnEvent(ui::Event* event) OVERRIDE {
 487     ui::EventHandler::OnEvent(event);
 488     events_.push_back(event->type());
 489     if (wait_until_event_ == event->type() && run_loop_) {
 490       run_loop_->Quit();
 491       wait_until_event_ = ui::ET_UNKNOWN;
 492     }
 493   }
 494
 495   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
 496     mouse_locations_.push_back(event->location());
 497     mouse_event_flags_.push_back(event->flags());
 498   }
 499
 500   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE {
 501     touch_locations_.push_back(event->location());
 502   }
 503
 504   bool HasReceivedEvent(ui::EventType type) {
 505     return std::find(events_.begin(), events_.end(), type) != events_.end();
 506   }
 507
 508  private:
 509   scoped_ptr<base::RunLoop> run_loop_;
 510   ui::EventType wait_until_event_;
 511
 512   Events events_;
 513   EventLocations mouse_locations_;
 514   EventLocations touch_locations_;
 515   EventFlags mouse_event_flags_;
 516
 517   DISALLOW_COPY_AND_ASSIGN(EventFilterRecorder);
 518 };
 519
 520 // Converts an EventType to a string.
 521 std::string EventTypeToString(ui::EventType type) {
 522   switch (type) {
 523     case ui::ET_TOUCH_RELEASED:
 524       return "TOUCH_RELEASED";
 525
 526     case ui::ET_TOUCH_CANCELLED:
 527       return "TOUCH_CANCELLED";
 528
 529     case ui::ET_TOUCH_PRESSED:
 530       return "TOUCH_PRESSED";
 531
 532     case ui::ET_TOUCH_MOVED:
 533       return "TOUCH_MOVED";
 534
 535     case ui::ET_MOUSE_PRESSED:
 536       return "MOUSE_PRESSED";
 537
 538     case ui::ET_MOUSE_DRAGGED:
 539       return "MOUSE_DRAGGED";
 540
 541     case ui::ET_MOUSE_RELEASED:
 542       return "MOUSE_RELEASED";
 543
 544     case ui::ET_MOUSE_MOVED:
 545       return "MOUSE_MOVED";
 546
 547     case ui::ET_MOUSE_ENTERED:
 548       return "MOUSE_ENTERED";
 549
 550     case ui::ET_MOUSE_EXITED:
 551       return "MOUSE_EXITED";
 552
 553     case ui::ET_GESTURE_SCROLL_BEGIN:
 554       return "GESTURE_SCROLL_BEGIN";
 555
 556     case ui::ET_GESTURE_SCROLL_END:
 557       return "GESTURE_SCROLL_END";
 558
 559     case ui::ET_GESTURE_SCROLL_UPDATE:
 560       return "GESTURE_SCROLL_UPDATE";
 561
 562     case ui::ET_GESTURE_PINCH_BEGIN:
 563       return "GESTURE_PINCH_BEGIN";
 564
 565     case ui::ET_GESTURE_PINCH_END:
 566       return "GESTURE_PINCH_END";
 567
 568     case ui::ET_GESTURE_PINCH_UPDATE:
 569       return "GESTURE_PINCH_UPDATE";
 570
 571     case ui::ET_GESTURE_TAP:
 572       return "GESTURE_TAP";
 573
 574     case ui::ET_GESTURE_TAP_DOWN:
 575       return "GESTURE_TAP_DOWN";
 576
 577     case ui::ET_GESTURE_TAP_CANCEL:
 578       return "GESTURE_TAP_CANCEL";
 579
 580     case ui::ET_GESTURE_SHOW_PRESS:
 581       return "GESTURE_SHOW_PRESS";
 582
 583     case ui::ET_GESTURE_BEGIN:
 584       return "GESTURE_BEGIN";
 585
 586     case ui::ET_GESTURE_END:
 587       return "GESTURE_END";
 588
 589     default:
 590       // We should explicitly require each event type.
 591       NOTREACHED() << "Received unexpected event: " << type;
 592       break;
 593   }
 594   return "";
 595 }
 596
 597 std::string EventTypesToString(const EventFilterRecorder::Events& events) {
 598   std::string result;
 599   for (size_t i = 0; i < events.size(); ++i) {
 600     if (i != 0)
 601       result += " ";
 602     result += EventTypeToString(events[i]);
 603   }
 604   return result;
 605 }
 606
 607 }  // namespace
 608
 609 // Verifies a repost mouse event targets the window with capture (if there is
 610 // one).
 611 TEST_F(WindowEventDispatcherTest, RepostTargetsCaptureWindow) {
 612   // Set capture on |window| generate a mouse event (that is reposted) and not
 613   // over |window| and verify |window| gets it (|window| gets it because it has
 614   // capture).
 615   EXPECT_FALSE(Env::GetInstance()->IsMouseButtonDown());
 616   EventFilterRecorder recorder;
 617   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), NULL));
 618   window->SetBounds(gfx::Rect(20, 20, 40, 30));
 619   window->AddPreTargetHandler(&recorder);
 620   window->SetCapture();
 621   const ui::MouseEvent press_event(
 622       ui::ET_MOUSE_PRESSED, gfx::Point(), gfx::Point(),
 623       ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
 624   host()->dispatcher()->RepostEvent(press_event);
 625   RunAllPendingInMessageLoop();  // Necessitated by RepostEvent().
 626   // Mouse moves/enters may be generated. We only care about a pressed.
 627   EXPECT_TRUE(EventTypesToString(recorder.events()).find("MOUSE_PRESSED") !=
 628               std::string::npos) << EventTypesToString(recorder.events());
 629 }
 630
 631 TEST_F(WindowEventDispatcherTest, MouseMovesHeld) {
 632   EventFilterRecorder recorder;
 633   root_window()->AddPreTargetHandler(&recorder);
 634
 635   test::TestWindowDelegate delegate;
 636   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 637       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
 638
 639   ui::MouseEvent mouse_move_event(ui::ET_MOUSE_MOVED, gfx::Point(0, 0),
 640                                   gfx::Point(0, 0), 0, 0);
 641   DispatchEventUsingWindowDispatcher(&mouse_move_event);
 642   // Discard MOUSE_ENTER.
 643   recorder.Reset();
 644
 645   host()->dispatcher()->HoldPointerMoves();
 646
 647   // Check that we don't immediately dispatch the MOUSE_DRAGGED event.
 648   ui::MouseEvent mouse_dragged_event(ui::ET_MOUSE_DRAGGED, gfx::Point(0, 0),
 649                                      gfx::Point(0, 0), 0, 0);
 650   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 651   EXPECT_TRUE(recorder.events().empty());
 652
 653   // Check that we do dispatch the held MOUSE_DRAGGED event before another type
 654   // of event.
 655   ui::MouseEvent mouse_pressed_event(ui::ET_MOUSE_PRESSED, gfx::Point(0, 0),
 656                                      gfx::Point(0, 0), 0, 0);
 657   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 658   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 659             EventTypesToString(recorder.events()));
 660   recorder.Reset();
 661
 662   // Check that we coalesce held MOUSE_DRAGGED events.
 663   ui::MouseEvent mouse_dragged_event2(ui::ET_MOUSE_DRAGGED, gfx::Point(10, 10),
 664                                       gfx::Point(10, 10), 0, 0);
 665   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 666   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 667   EXPECT_TRUE(recorder.events().empty());
 668   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 669   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 670             EventTypesToString(recorder.events()));
 671   recorder.Reset();
 672
 673   // Check that on ReleasePointerMoves, held events are not dispatched
 674   // immediately, but posted instead.
 675   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 676   host()->dispatcher()->ReleasePointerMoves();
 677   EXPECT_TRUE(recorder.events().empty());
 678   RunAllPendingInMessageLoop();
 679   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(recorder.events()));
 680   recorder.Reset();
 681
 682   // However if another message comes in before the dispatch of the posted
 683   // event, check that the posted event is dispatched before this new event.
 684   host()->dispatcher()->HoldPointerMoves();
 685   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 686   host()->dispatcher()->ReleasePointerMoves();
 687   DispatchEventUsingWindowDispatcher(&mouse_pressed_event);
 688   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
 689             EventTypesToString(recorder.events()));
 690   recorder.Reset();
 691   RunAllPendingInMessageLoop();
 692   EXPECT_TRUE(recorder.events().empty());
 693
 694   // Check that if the other message is another MOUSE_DRAGGED, we still coalesce
 695   // them.
 696   host()->dispatcher()->HoldPointerMoves();
 697   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 698   host()->dispatcher()->ReleasePointerMoves();
 699   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 700   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(recorder.events()));
 701   recorder.Reset();
 702   RunAllPendingInMessageLoop();
 703   EXPECT_TRUE(recorder.events().empty());
 704
 705   // Check that synthetic mouse move event has a right location when issued
 706   // while holding pointer moves.
 707   ui::MouseEvent mouse_dragged_event3(ui::ET_MOUSE_DRAGGED, gfx::Point(28, 28),
 708                                       gfx::Point(28, 28), 0, 0);
 709   host()->dispatcher()->HoldPointerMoves();
 710   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
 711   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
 712   window->SetBounds(gfx::Rect(15, 15, 80, 80));
 713   DispatchEventUsingWindowDispatcher(&mouse_dragged_event3);
 714   RunAllPendingInMessageLoop();
 715   EXPECT_TRUE(recorder.events().empty());
 716   host()->dispatcher()->ReleasePointerMoves();
 717   RunAllPendingInMessageLoop();
 718   EXPECT_EQ("MOUSE_MOVED", EventTypesToString(recorder.events()));
 719   EXPECT_EQ(gfx::Point(13, 13), recorder.mouse_location(0));
 720   recorder.Reset();
 721   root_window()->RemovePreTargetHandler(&recorder);
 722 }
 723
 724 TEST_F(WindowEventDispatcherTest, TouchMovesHeld) {
 725   EventFilterRecorder recorder;
 726   root_window()->AddPreTargetHandler(&recorder);
 727
 728   test::TestWindowDelegate delegate;
 729   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 730       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 731
 732   const gfx::Point touch_location(60, 60);
 733   // Starting the touch and throwing out the first few events, since the system
 734   // is going to generate synthetic mouse events that are not relevant to the
 735   // test.
 736   ui::TouchEvent touch_pressed_event(
 737       ui::ET_TOUCH_PRESSED, touch_location, 0, ui::EventTimeForNow());
 738   DispatchEventUsingWindowDispatcher(&touch_pressed_event);
 739   recorder.WaitUntilReceivedEvent(ui::ET_GESTURE_SHOW_PRESS);
 740   recorder.Reset();
 741
 742   host()->dispatcher()->HoldPointerMoves();
 743
 744   // Check that we don't immediately dispatch the TOUCH_MOVED event.
 745   ui::TouchEvent touch_moved_event(
 746       ui::ET_TOUCH_MOVED, touch_location, 0, ui::EventTimeForNow());
 747   ui::TouchEvent touch_moved_event2 = touch_moved_event;
 748   ui::TouchEvent touch_moved_event3 = touch_moved_event;
 749
 750   DispatchEventUsingWindowDispatcher(&touch_moved_event);
 751   EXPECT_TRUE(recorder.events().empty());
 752
 753   // Check that on ReleasePointerMoves, held events are not dispatched
 754   // immediately, but posted instead.
 755   DispatchEventUsingWindowDispatcher(&touch_moved_event2);
 756   host()->dispatcher()->ReleasePointerMoves();
 757   EXPECT_TRUE(recorder.events().empty());
 758
 759   RunAllPendingInMessageLoop();
 760   EXPECT_EQ("TOUCH_MOVED", EventTypesToString(recorder.events()));
 761   recorder.Reset();
 762
 763   // If another touch event occurs then the held touch should be dispatched
 764   // immediately before it.
 765   ui::TouchEvent touch_released_event(
 766       ui::ET_TOUCH_RELEASED, touch_location, 0, ui::EventTimeForNow());
 767   recorder.Reset();
 768   host()->dispatcher()->HoldPointerMoves();
 769   DispatchEventUsingWindowDispatcher(&touch_moved_event3);
 770   DispatchEventUsingWindowDispatcher(&touch_released_event);
 771   EXPECT_EQ("TOUCH_MOVED TOUCH_RELEASED GESTURE_TAP GESTURE_END",
 772             EventTypesToString(recorder.events()));
 773   recorder.Reset();
 774   host()->dispatcher()->ReleasePointerMoves();
 775   RunAllPendingInMessageLoop();
 776   EXPECT_TRUE(recorder.events().empty());
 777 }
 778
 779 // This event handler requests the dispatcher to start holding pointer-move
 780 // events when it receives the first scroll-update gesture.
 781 class HoldPointerOnScrollHandler : public ui::test::TestEventHandler {
 782  public:
 783   HoldPointerOnScrollHandler(WindowEventDispatcher* dispatcher,
 784                              EventFilterRecorder* filter)
 785       : dispatcher_(dispatcher),
 786         filter_(filter),
 787         holding_moves_(false) {}
 788   virtual ~HoldPointerOnScrollHandler() {}
 789
 790  private:
 791   // ui::test::TestEventHandler:
 792   virtual void OnGestureEvent(ui::GestureEvent* gesture) OVERRIDE {
 793     if (!holding_moves_ && gesture->type() == ui::ET_GESTURE_SCROLL_UPDATE) {
 794       holding_moves_ = true;
 795       dispatcher_->HoldPointerMoves();
 796       filter_->Reset();
 797     } else if (gesture->type() == ui::ET_GESTURE_SCROLL_END) {
 798       dispatcher_->ReleasePointerMoves();
 799       holding_moves_ = false;
 800     }
 801   }
 802
 803   WindowEventDispatcher* dispatcher_;
 804   EventFilterRecorder* filter_;
 805   bool holding_moves_;
 806
 807   DISALLOW_COPY_AND_ASSIGN(HoldPointerOnScrollHandler);
 808 };
 809
 810 // Tests that touch-move events don't contribute to an in-progress scroll
 811 // gesture if touch-move events are being held by the dispatcher.
 812 TEST_F(WindowEventDispatcherTest, TouchMovesHeldOnScroll) {
 813   EventFilterRecorder recorder;
 814   root_window()->AddPreTargetHandler(&recorder);
 815   test::TestWindowDelegate delegate;
 816   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
 817   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 818       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 819   window->AddPreTargetHandler(&handler);
 820
 821   test::EventGenerator generator(root_window());
 822   generator.GestureScrollSequence(
 823       gfx::Point(60, 60), gfx::Point(10, 60),
 824       base::TimeDelta::FromMilliseconds(100), 25);
 825
 826   // |handler| will have reset |filter| and started holding the touch-move
 827   // events when scrolling started. At the end of the scroll (i.e. upon
 828   // touch-release), the held touch-move event will have been dispatched first,
 829   // along with the subsequent events (i.e. touch-release, scroll-end, and
 830   // gesture-end).
 831   const EventFilterRecorder::Events& events = recorder.events();
 832   EXPECT_EQ(
 833       "TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
 834       "GESTURE_SCROLL_END GESTURE_END",
 835       EventTypesToString(events));
 836   ASSERT_EQ(2u, recorder.touch_locations().size());
 837   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
 838             recorder.touch_locations()[0].ToString());
 839   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
 840             recorder.touch_locations()[1].ToString());
 841 }
 842
 843 // Tests that a 'held' touch-event does contribute to gesture event when it is
 844 // dispatched.
 845 TEST_F(WindowEventDispatcherTest, HeldTouchMoveContributesToGesture) {
 846   EventFilterRecorder recorder;
 847   root_window()->AddPreTargetHandler(&recorder);
 848
 849   const gfx::Point location(20, 20);
 850   ui::TouchEvent press(
 851       ui::ET_TOUCH_PRESSED, location, 0, ui::EventTimeForNow());
 852   DispatchEventUsingWindowDispatcher(&press);
 853   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_PRESSED));
 854   recorder.Reset();
 855
 856   host()->dispatcher()->HoldPointerMoves();
 857
 858   ui::TouchEvent move(ui::ET_TOUCH_MOVED,
 859                       location + gfx::Vector2d(100, 100),
 860                       0,
 861                       ui::EventTimeForNow());
 862   DispatchEventUsingWindowDispatcher(&move);
 863   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 864   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_BEGIN));
 865   recorder.Reset();
 866
 867   host()->dispatcher()->ReleasePointerMoves();
 868   EXPECT_FALSE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 869   RunAllPendingInMessageLoop();
 870   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_TOUCH_MOVED));
 871   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_BEGIN));
 872   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_SCROLL_UPDATE));
 873
 874   root_window()->RemovePreTargetHandler(&recorder);
 875 }
 876
 877 // Tests that synthetic mouse events are ignored when mouse
 878 // events are disabled.
 879 TEST_F(WindowEventDispatcherTest, DispatchSyntheticMouseEvents) {
 880   EventFilterRecorder recorder;
 881   root_window()->AddPreTargetHandler(&recorder);
 882
 883   test::TestWindowDelegate delegate;
 884   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 885       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
 886   window->Show();
 887   window->SetCapture();
 888
 889   test::TestCursorClient cursor_client(root_window());
 890
 891   // Dispatch a non-synthetic mouse event when mouse events are enabled.
 892   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 893                         gfx::Point(10, 10), 0, 0);
 894   DispatchEventUsingWindowDispatcher(&mouse1);
 895   EXPECT_FALSE(recorder.events().empty());
 896   recorder.Reset();
 897
 898   // Dispatch a synthetic mouse event when mouse events are enabled.
 899   ui::MouseEvent mouse2(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 900                         gfx::Point(10, 10), ui::EF_IS_SYNTHESIZED, 0);
 901   DispatchEventUsingWindowDispatcher(&mouse2);
 902   EXPECT_FALSE(recorder.events().empty());
 903   recorder.Reset();
 904
 905   // Dispatch a synthetic mouse event when mouse events are disabled.
 906   cursor_client.DisableMouseEvents();
 907   DispatchEventUsingWindowDispatcher(&mouse2);
 908   EXPECT_TRUE(recorder.events().empty());
 909   root_window()->RemovePreTargetHandler(&recorder);
 910 }
 911
 912 // Tests synthetic mouse events generated when window bounds changes such that
 913 // the cursor previously outside the window becomes inside, or vice versa.
 914 // Do not synthesize events if the window ignores events or is invisible.
 915 TEST_F(WindowEventDispatcherTest, SynthesizeMouseEventsOnWindowBoundsChanged) {
 916   test::TestWindowDelegate delegate;
 917   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 918       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
 919   window->Show();
 920   window->SetCapture();
 921
 922   EventFilterRecorder recorder;
 923   window->AddPreTargetHandler(&recorder);
 924
 925   // Dispatch a non-synthetic mouse event to place cursor inside window bounds.
 926   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 927                        gfx::Point(10, 10), 0, 0);
 928   DispatchEventUsingWindowDispatcher(&mouse);
 929   EXPECT_FALSE(recorder.events().empty());
 930   recorder.Reset();
 931
 932   // Update the window bounds so that cursor is now outside the window.
 933   // This should trigger a synthetic MOVED event.
 934   gfx::Rect bounds1(20, 20, 100, 100);
 935   window->SetBounds(bounds1);
 936   RunAllPendingInMessageLoop();
 937   ASSERT_FALSE(recorder.events().empty());
 938   ASSERT_FALSE(recorder.mouse_event_flags().empty());
 939   EXPECT_EQ(ui::ET_MOUSE_MOVED, recorder.events().back());
 940   EXPECT_EQ(ui::EF_IS_SYNTHESIZED, recorder.mouse_event_flags().back());
 941   recorder.Reset();
 942
 943   // Set window to ignore events.
 944   window->set_ignore_events(true);
 945
 946   // Update the window bounds so that cursor is back inside the window.
 947   // This should not trigger a synthetic event.
 948   gfx::Rect bounds2(5, 5, 100, 100);
 949   window->SetBounds(bounds2);
 950   RunAllPendingInMessageLoop();
 951   EXPECT_TRUE(recorder.events().empty());
 952   recorder.Reset();
 953
 954   // Set window to accept events but invisible.
 955   window->set_ignore_events(false);
 956   window->Hide();
 957   recorder.Reset();
 958
 959   // Update the window bounds so that cursor is outside the window.
 960   // This should not trigger a synthetic event.
 961   window->SetBounds(bounds1);
 962   RunAllPendingInMessageLoop();
 963   EXPECT_TRUE(recorder.events().empty());
 964 }
 965
 966 // Tests that a mouse exit is dispatched to the last known cursor location
 967 // when the cursor becomes invisible.
 968 TEST_F(WindowEventDispatcherTest, DispatchMouseExitWhenCursorHidden) {
 969   EventFilterRecorder recorder;
 970   root_window()->AddPreTargetHandler(&recorder);
 971
 972   test::TestWindowDelegate delegate;
 973   gfx::Point window_origin(7, 18);
 974   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 975       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
 976       root_window()));
 977   window->Show();
 978
 979   // Dispatch a mouse move event into the window.
 980   gfx::Point mouse_location(gfx::Point(15, 25));
 981   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location,
 982                         mouse_location, 0, 0);
 983   EXPECT_TRUE(recorder.events().empty());
 984   DispatchEventUsingWindowDispatcher(&mouse1);
 985   EXPECT_FALSE(recorder.events().empty());
 986   recorder.Reset();
 987
 988   // Hide the cursor and verify a mouse exit was dispatched.
 989   host()->OnCursorVisibilityChanged(false);
 990   EXPECT_FALSE(recorder.events().empty());
 991   EXPECT_EQ("MOUSE_EXITED", EventTypesToString(recorder.events()));
 992
 993   // Verify the mouse exit was dispatched at the correct location
 994   // (in the correct coordinate space).
 995   int translated_x = mouse_location.x() - window_origin.x();
 996   int translated_y = mouse_location.y() - window_origin.y();
 997   gfx::Point translated_point(translated_x, translated_y);
 998   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
 999   root_window()->RemovePreTargetHandler(&recorder);
1000 }
1001
1002 // Tests that a synthetic mouse exit is dispatched to the last known cursor
1003 // location after mouse events are disabled on the cursor client.
1004 TEST_F(WindowEventDispatcherTest,
1005        DispatchSyntheticMouseExitAfterMouseEventsDisabled) {
1006   EventFilterRecorder recorder;
1007   root_window()->AddPreTargetHandler(&recorder);
1008
1009   test::TestWindowDelegate delegate;
1010   gfx::Point window_origin(7, 18);
1011   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1012       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
1013       root_window()));
1014   window->Show();
1015
1016   // Dispatch a mouse move event into the window.
1017   gfx::Point mouse_location(gfx::Point(15, 25));
1018   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location,
1019                         mouse_location, 0, 0);
1020   EXPECT_TRUE(recorder.events().empty());
1021   DispatchEventUsingWindowDispatcher(&mouse1);
1022   EXPECT_FALSE(recorder.events().empty());
1023   recorder.Reset();
1024
1025   test::TestCursorClient cursor_client(root_window());
1026   cursor_client.DisableMouseEvents();
1027
1028   gfx::Point mouse_exit_location(gfx::Point(150, 150));
1029   ui::MouseEvent mouse2(ui::ET_MOUSE_EXITED, gfx::Point(150, 150),
1030                         gfx::Point(150, 150), ui::EF_IS_SYNTHESIZED, 0);
1031   DispatchEventUsingWindowDispatcher(&mouse2);
1032
1033   EXPECT_FALSE(recorder.events().empty());
1034   // We get the mouse exited event twice in our filter. Once during the
1035   // predispatch phase and during the actual dispatch.
1036   EXPECT_EQ("MOUSE_EXITED MOUSE_EXITED", EventTypesToString(recorder.events()));
1037
1038   // Verify the mouse exit was dispatched at the correct location
1039   // (in the correct coordinate space).
1040   int translated_x = mouse_exit_location.x() - window_origin.x();
1041   int translated_y = mouse_exit_location.y() - window_origin.y();
1042   gfx::Point translated_point(translated_x, translated_y);
1043   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
1044   root_window()->RemovePreTargetHandler(&recorder);
1045 }
1046
1047 class DeletingEventFilter : public ui::EventHandler {
1048  public:
1049   DeletingEventFilter()
1050       : delete_during_pre_handle_(false) {}
1051   virtual ~DeletingEventFilter() {}
1052
1053   void Reset(bool delete_during_pre_handle) {
1054     delete_during_pre_handle_ = delete_during_pre_handle;
1055   }
1056
1057  private:
1058   // Overridden from ui::EventHandler:
1059   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
1060     if (delete_during_pre_handle_)
1061       delete event->target();
1062   }
1063
1064   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1065     if (delete_during_pre_handle_)
1066       delete event->target();
1067   }
1068
1069   bool delete_during_pre_handle_;
1070
1071   DISALLOW_COPY_AND_ASSIGN(DeletingEventFilter);
1072 };
1073
1074 class DeletingWindowDelegate : public test::TestWindowDelegate {
1075  public:
1076   DeletingWindowDelegate()
1077       : window_(NULL),
1078         delete_during_handle_(false),
1079         got_event_(false) {}
1080   virtual ~DeletingWindowDelegate() {}
1081
1082   void Reset(Window* window, bool delete_during_handle) {
1083     window_ = window;
1084     delete_during_handle_ = delete_during_handle;
1085     got_event_ = false;
1086   }
1087   bool got_event() const { return got_event_; }
1088
1089  private:
1090   // Overridden from WindowDelegate:
1091   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
1092     if (delete_during_handle_)
1093       delete window_;
1094     got_event_ = true;
1095   }
1096
1097   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1098     if (delete_during_handle_)
1099       delete window_;
1100     got_event_ = true;
1101   }
1102
1103   Window* window_;
1104   bool delete_during_handle_;
1105   bool got_event_;
1106
1107   DISALLOW_COPY_AND_ASSIGN(DeletingWindowDelegate);
1108 };
1109
1110 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringDispatch) {
1111   // Verifies that we can delete a window during each phase of event handling.
1112   // Deleting the window should not cause a crash, only prevent further
1113   // processing from occurring.
1114   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1115   DeletingWindowDelegate d11;
1116   Window* w11 = CreateNormalWindow(11, w1.get(), &d11);
1117   WindowTracker tracker;
1118   DeletingEventFilter w1_filter;
1119   w1->AddPreTargetHandler(&w1_filter);
1120   client::GetFocusClient(w1.get())->FocusWindow(w11);
1121
1122   test::EventGenerator generator(root_window(), w11);
1123
1124   // First up, no one deletes anything.
1125   tracker.Add(w11);
1126   d11.Reset(w11, false);
1127
1128   generator.PressLeftButton();
1129   EXPECT_TRUE(tracker.Contains(w11));
1130   EXPECT_TRUE(d11.got_event());
1131   generator.ReleaseLeftButton();
1132
1133   // Delegate deletes w11. This will prevent the post-handle step from applying.
1134   w1_filter.Reset(false);
1135   d11.Reset(w11, true);
1136   generator.PressKey(ui::VKEY_A, 0);
1137   EXPECT_FALSE(tracker.Contains(w11));
1138   EXPECT_TRUE(d11.got_event());
1139
1140   // Pre-handle step deletes w11. This will prevent the delegate and the post-
1141   // handle steps from applying.
1142   w11 = CreateNormalWindow(11, w1.get(), &d11);
1143   w1_filter.Reset(true);
1144   d11.Reset(w11, false);
1145   generator.PressLeftButton();
1146   EXPECT_FALSE(tracker.Contains(w11));
1147   EXPECT_FALSE(d11.got_event());
1148 }
1149
1150 namespace {
1151
1152 // A window delegate that detaches the parent of the target's parent window when
1153 // it receives a tap event.
1154 class DetachesParentOnTapDelegate : public test::TestWindowDelegate {
1155  public:
1156   DetachesParentOnTapDelegate() {}
1157   virtual ~DetachesParentOnTapDelegate() {}
1158
1159  private:
1160   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1161     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1162       event->SetHandled();
1163       return;
1164     }
1165
1166     if (event->type() == ui::ET_GESTURE_TAP) {
1167       Window* parent = static_cast<Window*>(event->target())->parent();
1168       parent->parent()->RemoveChild(parent);
1169       event->SetHandled();
1170     }
1171   }
1172
1173   DISALLOW_COPY_AND_ASSIGN(DetachesParentOnTapDelegate);
1174 };
1175
1176 }  // namespace
1177
1178 // Tests that the gesture recognizer is reset for all child windows when a
1179 // window hides. No expectations, just checks that the test does not crash.
1180 TEST_F(WindowEventDispatcherTest,
1181        GestureRecognizerResetsTargetWhenParentHides) {
1182   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1183   DetachesParentOnTapDelegate delegate;
1184   scoped_ptr<Window> parent(CreateNormalWindow(22, w1.get(), NULL));
1185   Window* child = CreateNormalWindow(11, parent.get(), &delegate);
1186   test::EventGenerator generator(root_window(), child);
1187   generator.GestureTapAt(gfx::Point(40, 40));
1188 }
1189
1190 namespace {
1191
1192 // A window delegate that processes nested gestures on tap.
1193 class NestedGestureDelegate : public test::TestWindowDelegate {
1194  public:
1195   NestedGestureDelegate(test::EventGenerator* generator,
1196                         const gfx::Point tap_location)
1197       : generator_(generator),
1198         tap_location_(tap_location),
1199         gesture_end_count_(0) {}
1200   virtual ~NestedGestureDelegate() {}
1201
1202   int gesture_end_count() const { return gesture_end_count_; }
1203
1204  private:
1205   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1206     switch (event->type()) {
1207       case ui::ET_GESTURE_TAP_DOWN:
1208         event->SetHandled();
1209         break;
1210       case ui::ET_GESTURE_TAP:
1211         if (generator_)
1212           generator_->GestureTapAt(tap_location_);
1213         event->SetHandled();
1214         break;
1215       case ui::ET_GESTURE_END:
1216         ++gesture_end_count_;
1217         break;
1218       default:
1219         break;
1220     }
1221   }
1222
1223   test::EventGenerator* generator_;
1224   const gfx::Point tap_location_;
1225   int gesture_end_count_;
1226   DISALLOW_COPY_AND_ASSIGN(NestedGestureDelegate);
1227 };
1228
1229 }  // namespace
1230
1231 // Tests that gesture end is delivered after nested gesture processing.
1232 TEST_F(WindowEventDispatcherTest, GestureEndDeliveredAfterNestedGestures) {
1233   NestedGestureDelegate d1(NULL, gfx::Point());
1234   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &d1));
1235   w1->SetBounds(gfx::Rect(0, 0, 100, 100));
1236
1237   test::EventGenerator nested_generator(root_window(), w1.get());
1238   NestedGestureDelegate d2(&nested_generator, w1->bounds().CenterPoint());
1239   scoped_ptr<Window> w2(CreateNormalWindow(1, root_window(), &d2));
1240   w2->SetBounds(gfx::Rect(100, 0, 100, 100));
1241
1242   // Tap on w2 which triggers nested gestures for w1.
1243   test::EventGenerator generator(root_window(), w2.get());
1244   generator.GestureTapAt(w2->bounds().CenterPoint());
1245
1246   // Both windows should get their gesture end events.
1247   EXPECT_EQ(1, d1.gesture_end_count());
1248   EXPECT_EQ(1, d2.gesture_end_count());
1249 }
1250
1251 // Tests whether we can repost the Tap down gesture event.
1252 TEST_F(WindowEventDispatcherTest, RepostTapdownGestureTest) {
1253   EventFilterRecorder recorder;
1254   root_window()->AddPreTargetHandler(&recorder);
1255
1256   test::TestWindowDelegate delegate;
1257   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1258       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1259
1260   ui::GestureEventDetails details(ui::ET_GESTURE_TAP_DOWN, 0.0f, 0.0f);
1261   gfx::Point point(10, 10);
1262   ui::GestureEvent event(ui::ET_GESTURE_TAP_DOWN,
1263                          point.x(),
1264                          point.y(),
1265                          0,
1266                          ui::EventTimeForNow(),
1267                          details,
1268                          0);
1269   host()->dispatcher()->RepostEvent(event);
1270   RunAllPendingInMessageLoop();
1271   // TODO(rbyers): Currently disabled - crbug.com/170987
1272   EXPECT_FALSE(EventTypesToString(recorder.events()).find("GESTURE_TAP_DOWN") !=
1273               std::string::npos);
1274   recorder.Reset();
1275   root_window()->RemovePreTargetHandler(&recorder);
1276 }
1277
1278 // This class inherits from the EventFilterRecorder class which provides a
1279 // facility to record events. This class additionally provides a facility to
1280 // repost the ET_GESTURE_TAP_DOWN gesture to the target window and records
1281 // events after that.
1282 class RepostGestureEventRecorder : public EventFilterRecorder {
1283  public:
1284   RepostGestureEventRecorder(aura::Window* repost_source,
1285                              aura::Window* repost_target)
1286       : repost_source_(repost_source),
1287         repost_target_(repost_target),
1288         reposted_(false),
1289         done_cleanup_(false) {}
1290
1291   virtual ~RepostGestureEventRecorder() {}
1292
1293   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE {
1294     if (reposted_ && event->type() == ui::ET_TOUCH_PRESSED) {
1295       done_cleanup_ = true;
1296       Reset();
1297     }
1298     EventFilterRecorder::OnTouchEvent(event);
1299   }
1300
1301   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1302     EXPECT_EQ(done_cleanup_ ? repost_target_ : repost_source_, event->target());
1303     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1304       if (!reposted_) {
1305         EXPECT_NE(repost_target_, event->target());
1306         reposted_ = true;
1307         repost_target_->GetHost()->dispatcher()->RepostEvent(*event);
1308         // Ensure that the reposted gesture event above goes to the
1309         // repost_target_;
1310         repost_source_->GetRootWindow()->RemoveChild(repost_source_);
1311         return;
1312       }
1313     }
1314     EventFilterRecorder::OnGestureEvent(event);
1315   }
1316
1317   // Ignore mouse events as they don't fire at all times. This causes
1318   // the GestureRepostEventOrder test to fail randomly.
1319   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {}
1320
1321  private:
1322   aura::Window* repost_source_;
1323   aura::Window* repost_target_;
1324   // set to true if we reposted the ET_GESTURE_TAP_DOWN event.
1325   bool reposted_;
1326   // set true if we're done cleaning up after hiding repost_source_;
1327   bool done_cleanup_;
1328   DISALLOW_COPY_AND_ASSIGN(RepostGestureEventRecorder);
1329 };
1330
1331 // Tests whether events which are generated after the reposted gesture event
1332 // are received after that. In this case the scroll sequence events should
1333 // be received after the reposted gesture event.
1334 TEST_F(WindowEventDispatcherTest, GestureRepostEventOrder) {
1335   // Expected events at the end for the repost_target window defined below.
1336   const char kExpectedTargetEvents[] =
1337     // TODO)(rbyers): Gesture event reposting is disabled - crbug.com/279039.
1338     // "GESTURE_BEGIN GESTURE_TAP_DOWN "
1339     "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1340     "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE TOUCH_MOVED "
1341     "GESTURE_SCROLL_UPDATE TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
1342     "GESTURE_SCROLL_END GESTURE_END";
1343   // We create two windows.
1344   // The first window (repost_source) is the one to which the initial tap
1345   // gesture is sent. It reposts this event to the second window
1346   // (repost_target).
1347   // We then generate the scroll sequence for repost_target and look for two
1348   // ET_GESTURE_TAP_DOWN events in the event list at the end.
1349   test::TestWindowDelegate delegate;
1350   scoped_ptr<aura::Window> repost_target(CreateTestWindowWithDelegate(
1351       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1352
1353   scoped_ptr<aura::Window> repost_source(CreateTestWindowWithDelegate(
1354       &delegate, 1, gfx::Rect(0, 0, 50, 50), root_window()));
1355
1356   RepostGestureEventRecorder repost_event_recorder(repost_source.get(),
1357                                                    repost_target.get());
1358   root_window()->AddPreTargetHandler(&repost_event_recorder);
1359
1360   // Generate a tap down gesture for the repost_source. This will be reposted
1361   // to repost_target.
1362   test::EventGenerator repost_generator(root_window(), repost_source.get());
1363   repost_generator.GestureTapAt(gfx::Point(40, 40));
1364   RunAllPendingInMessageLoop();
1365
1366   test::EventGenerator scroll_generator(root_window(), repost_target.get());
1367   scroll_generator.GestureScrollSequence(
1368       gfx::Point(80, 80),
1369       gfx::Point(100, 100),
1370       base::TimeDelta::FromMilliseconds(100),
1371       3);
1372   RunAllPendingInMessageLoop();
1373
1374   int tap_down_count = 0;
1375   for (size_t i = 0; i < repost_event_recorder.events().size(); ++i) {
1376     if (repost_event_recorder.events()[i] == ui::ET_GESTURE_TAP_DOWN)
1377       ++tap_down_count;
1378   }
1379
1380   // We expect two tap down events. One from the repost and the other one from
1381   // the scroll sequence posted above.
1382   // TODO(rbyers): Currently disabled - crbug.com/170987
1383   EXPECT_EQ(1, tap_down_count);
1384
1385   EXPECT_EQ(kExpectedTargetEvents,
1386             EventTypesToString(repost_event_recorder.events()));
1387   root_window()->RemovePreTargetHandler(&repost_event_recorder);
1388 }
1389
1390 class OnMouseExitDeletingEventFilter : public EventFilterRecorder {
1391  public:
1392   OnMouseExitDeletingEventFilter() : window_to_delete_(NULL) {}
1393   virtual ~OnMouseExitDeletingEventFilter() {}
1394
1395   void set_window_to_delete(Window* window_to_delete) {
1396     window_to_delete_ = window_to_delete;
1397   }
1398
1399  private:
1400   // Overridden from ui::EventHandler:
1401   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1402     EventFilterRecorder::OnMouseEvent(event);
1403     if (window_to_delete_) {
1404       delete window_to_delete_;
1405       window_to_delete_ = NULL;
1406     }
1407   }
1408
1409   Window* window_to_delete_;
1410
1411   DISALLOW_COPY_AND_ASSIGN(OnMouseExitDeletingEventFilter);
1412 };
1413
1414 // Tests that RootWindow drops mouse-moved event that is supposed to be sent to
1415 // a child, but the child is destroyed because of the synthesized mouse-exit
1416 // event generated on the previous mouse_moved_handler_.
1417 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringMouseMovedDispatch) {
1418   // Create window 1 and set its event filter. Window 1 will take ownership of
1419   // the event filter.
1420   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1421   OnMouseExitDeletingEventFilter w1_filter;
1422   w1->AddPreTargetHandler(&w1_filter);
1423   w1->SetBounds(gfx::Rect(20, 20, 60, 60));
1424   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1425
1426   test::EventGenerator generator(root_window(), w1.get());
1427
1428   // Move mouse over window 1 to set it as the |mouse_moved_handler_| for the
1429   // root window.
1430   generator.MoveMouseTo(51, 51);
1431   EXPECT_EQ(w1.get(), host()->dispatcher()->mouse_moved_handler());
1432
1433   // Create window 2 under the mouse cursor and stack it above window 1.
1434   Window* w2 = CreateNormalWindow(2, root_window(), NULL);
1435   w2->SetBounds(gfx::Rect(30, 30, 40, 40));
1436   root_window()->StackChildAbove(w2, w1.get());
1437
1438   // Set window 2 as the window that is to be deleted when a mouse-exited event
1439   // happens on window 1.
1440   w1_filter.set_window_to_delete(w2);
1441
1442   // Move mosue over window 2. This should generate a mouse-exited event for
1443   // window 1 resulting in deletion of window 2. The original mouse-moved event
1444   // that was targeted to window 2 should be dropped since window 2 is
1445   // destroyed. This test passes if no crash happens.
1446   generator.MoveMouseTo(52, 52);
1447   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1448
1449   // Check events received by window 1.
1450   EXPECT_EQ("MOUSE_ENTERED MOUSE_MOVED MOUSE_EXITED",
1451             EventTypesToString(w1_filter.events()));
1452 }
1453
1454 namespace {
1455
1456 // Used to track if OnWindowDestroying() is invoked and if there is a valid
1457 // RootWindow at such time.
1458 class ValidRootDuringDestructionWindowObserver : public aura::WindowObserver {
1459  public:
1460   ValidRootDuringDestructionWindowObserver(bool* got_destroying,
1461                                            bool* has_valid_root)
1462       : got_destroying_(got_destroying),
1463         has_valid_root_(has_valid_root) {
1464   }
1465
1466   // WindowObserver:
1467   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {
1468     *got_destroying_ = true;
1469     *has_valid_root_ = (window->GetRootWindow() != NULL);
1470   }
1471
1472  private:
1473   bool* got_destroying_;
1474   bool* has_valid_root_;
1475
1476   DISALLOW_COPY_AND_ASSIGN(ValidRootDuringDestructionWindowObserver);
1477 };
1478
1479 }  // namespace
1480
1481 // Verifies GetRootWindow() from ~Window returns a valid root.
1482 TEST_F(WindowEventDispatcherTest, ValidRootDuringDestruction) {
1483   bool got_destroying = false;
1484   bool has_valid_root = false;
1485   ValidRootDuringDestructionWindowObserver observer(&got_destroying,
1486                                                     &has_valid_root);
1487   {
1488     scoped_ptr<WindowTreeHost> host(
1489         WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100)));
1490     host->InitHost();
1491     // Owned by WindowEventDispatcher.
1492     Window* w1 = CreateNormalWindow(1, host->window(), NULL);
1493     w1->AddObserver(&observer);
1494   }
1495   EXPECT_TRUE(got_destroying);
1496   EXPECT_TRUE(has_valid_root);
1497 }
1498
1499 namespace {
1500
1501 // See description above DontResetHeldEvent for details.
1502 class DontResetHeldEventWindowDelegate : public test::TestWindowDelegate {
1503  public:
1504   explicit DontResetHeldEventWindowDelegate(aura::Window* root)
1505       : root_(root),
1506         mouse_event_count_(0) {}
1507   virtual ~DontResetHeldEventWindowDelegate() {}
1508
1509   int mouse_event_count() const { return mouse_event_count_; }
1510
1511   // TestWindowDelegate:
1512   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1513     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0 &&
1514         mouse_event_count_++ == 0) {
1515       ui::MouseEvent mouse_event(ui::ET_MOUSE_PRESSED,
1516                                  gfx::Point(10, 10), gfx::Point(10, 10),
1517                                  ui::EF_SHIFT_DOWN, 0);
1518       root_->GetHost()->dispatcher()->RepostEvent(mouse_event);
1519     }
1520   }
1521
1522  private:
1523   Window* root_;
1524   int mouse_event_count_;
1525
1526   DISALLOW_COPY_AND_ASSIGN(DontResetHeldEventWindowDelegate);
1527 };
1528
1529 }  // namespace
1530
1531 // Verifies RootWindow doesn't reset |RootWindow::held_repostable_event_| after
1532 // dispatching. This is done by using DontResetHeldEventWindowDelegate, which
1533 // tracks the number of events with ui::EF_SHIFT_DOWN set (all reposted events
1534 // have EF_SHIFT_DOWN). When the first event is seen RepostEvent() is used to
1535 // schedule another reposted event.
1536 TEST_F(WindowEventDispatcherTest, DontResetHeldEvent) {
1537   DontResetHeldEventWindowDelegate delegate(root_window());
1538   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &delegate));
1539   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1540   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED,
1541                          gfx::Point(10, 10), gfx::Point(10, 10),
1542                          ui::EF_SHIFT_DOWN, 0);
1543   root_window()->GetHost()->dispatcher()->RepostEvent(pressed);
1544   ui::MouseEvent pressed2(ui::ET_MOUSE_PRESSED,
1545                           gfx::Point(10, 10), gfx::Point(10, 10), 0, 0);
1546   // Dispatch an event to flush event scheduled by way of RepostEvent().
1547   DispatchEventUsingWindowDispatcher(&pressed2);
1548   // Delegate should have seen reposted event (identified by way of
1549   // EF_SHIFT_DOWN). Dispatch another event to flush the second
1550   // RepostedEvent().
1551   EXPECT_EQ(1, delegate.mouse_event_count());
1552   DispatchEventUsingWindowDispatcher(&pressed2);
1553   EXPECT_EQ(2, delegate.mouse_event_count());
1554 }
1555
1556 namespace {
1557
1558 // See description above DeleteHostFromHeldMouseEvent for details.
1559 class DeleteHostFromHeldMouseEventDelegate
1560     : public test::TestWindowDelegate {
1561  public:
1562   explicit DeleteHostFromHeldMouseEventDelegate(WindowTreeHost* host)
1563       : host_(host),
1564         got_mouse_event_(false),
1565         got_destroy_(false) {
1566   }
1567   virtual ~DeleteHostFromHeldMouseEventDelegate() {}
1568
1569   bool got_mouse_event() const { return got_mouse_event_; }
1570   bool got_destroy() const { return got_destroy_; }
1571
1572   // TestWindowDelegate:
1573   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1574     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0) {
1575       got_mouse_event_ = true;
1576       delete host_;
1577     }
1578   }
1579   virtual void OnWindowDestroyed(Window* window) OVERRIDE {
1580     got_destroy_ = true;
1581   }
1582
1583  private:
1584   WindowTreeHost* host_;
1585   bool got_mouse_event_;
1586   bool got_destroy_;
1587
1588   DISALLOW_COPY_AND_ASSIGN(DeleteHostFromHeldMouseEventDelegate);
1589 };
1590
1591 }  // namespace
1592
1593 // Verifies if a WindowTreeHost is deleted from dispatching a held mouse event
1594 // we don't crash.
1595 TEST_F(WindowEventDispatcherTest, DeleteHostFromHeldMouseEvent) {
1596   // Should be deleted by |delegate|.
1597   WindowTreeHost* h2 = WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100));
1598   h2->InitHost();
1599   DeleteHostFromHeldMouseEventDelegate delegate(h2);
1600   // Owned by |h2|.
1601   Window* w1 = CreateNormalWindow(1, h2->window(), &delegate);
1602   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1603   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED,
1604                          gfx::Point(10, 10), gfx::Point(10, 10),
1605                          ui::EF_SHIFT_DOWN, 0);
1606   h2->dispatcher()->RepostEvent(pressed);
1607   // RunAllPendingInMessageLoop() to make sure the |pressed| is run.
1608   RunAllPendingInMessageLoop();
1609   EXPECT_TRUE(delegate.got_mouse_event());
1610   EXPECT_TRUE(delegate.got_destroy());
1611 }
1612
1613 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveTouches) {
1614   EventFilterRecorder recorder;
1615   root_window()->AddPreTargetHandler(&recorder);
1616
1617   test::TestWindowDelegate delegate;
1618   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1619       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1620
1621   gfx::Point position1 = root_window()->bounds().origin();
1622   ui::TouchEvent press(
1623       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1624   DispatchEventUsingWindowDispatcher(&press);
1625
1626   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN",
1627             EventTypesToString(recorder.GetAndResetEvents()));
1628
1629   window->Hide();
1630
1631   EXPECT_EQ(ui::ET_TOUCH_CANCELLED, recorder.events()[0]);
1632   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_TAP_CANCEL));
1633   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_END));
1634   EXPECT_EQ(3U, recorder.events().size());
1635   root_window()->RemovePreTargetHandler(&recorder);
1636 }
1637
1638 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveGestures) {
1639   EventFilterRecorder recorder;
1640   root_window()->AddPreTargetHandler(&recorder);
1641
1642   test::TestWindowDelegate delegate;
1643   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1644       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1645
1646   gfx::Point position1 = root_window()->bounds().origin();
1647   gfx::Point position2 = root_window()->bounds().CenterPoint();
1648   ui::TouchEvent press(
1649       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1650   DispatchEventUsingWindowDispatcher(&press);
1651
1652   ui::TouchEvent move(
1653       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1654   DispatchEventUsingWindowDispatcher(&move);
1655
1656   ui::TouchEvent press2(
1657       ui::ET_TOUCH_PRESSED, position1, 1, ui::EventTimeForNow());
1658   DispatchEventUsingWindowDispatcher(&press2);
1659
1660   // TODO(tdresser): once the unified Gesture Recognizer has stuck, remove the
1661   // special casing here. See crbug.com/332418 for details.
1662   std::string expected =
1663       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1664       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1665       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_PINCH_BEGIN";
1666
1667   std::string expected_ugr =
1668       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1669       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1670       "TOUCH_PRESSED GESTURE_BEGIN";
1671
1672   std::string events_string = EventTypesToString(recorder.GetAndResetEvents());
1673   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1674
1675   window->Hide();
1676
1677   expected =
1678       "TOUCH_CANCELLED GESTURE_PINCH_END GESTURE_END TOUCH_CANCELLED "
1679       "GESTURE_SCROLL_END GESTURE_END";
1680   expected_ugr =
1681       "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END GESTURE_END "
1682       "TOUCH_CANCELLED";
1683
1684   events_string = EventTypesToString(recorder.GetAndResetEvents());
1685   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1686
1687   root_window()->RemovePreTargetHandler(&recorder);
1688 }
1689
1690 // Places two windows side by side. Presses down on one window, and starts a
1691 // scroll. Sets capture on the other window and ensures that the "ending" events
1692 // aren't sent to the window which gained capture.
1693 TEST_F(WindowEventDispatcherTest, EndingEventDoesntRetarget) {
1694   EventFilterRecorder recorder1;
1695   EventFilterRecorder recorder2;
1696   scoped_ptr<Window> window1(CreateNormalWindow(1, root_window(), NULL));
1697   window1->SetBounds(gfx::Rect(0, 0, 40, 40));
1698
1699   scoped_ptr<Window> window2(CreateNormalWindow(2, root_window(), NULL));
1700   window2->SetBounds(gfx::Rect(40, 0, 40, 40));
1701
1702   window1->AddPreTargetHandler(&recorder1);
1703   window2->AddPreTargetHandler(&recorder2);
1704
1705   gfx::Point position = window1->bounds().origin();
1706   ui::TouchEvent press(
1707       ui::ET_TOUCH_PRESSED, position, 0, ui::EventTimeForNow());
1708   DispatchEventUsingWindowDispatcher(&press);
1709
1710   gfx::Point position2 = window1->bounds().CenterPoint();
1711   ui::TouchEvent move(
1712       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1713   DispatchEventUsingWindowDispatcher(&move);
1714
1715   window2->SetCapture();
1716
1717   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1718             "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1719             "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END",
1720             EventTypesToString(recorder1.events()));
1721
1722   EXPECT_TRUE(recorder2.events().empty());
1723 }
1724
1725 namespace {
1726
1727 // This class creates and manages a window which is destroyed as soon as
1728 // capture is lost. This is the case for the drag and drop capture window.
1729 class CaptureWindowTracker : public test::TestWindowDelegate {
1730  public:
1731   CaptureWindowTracker() {}
1732   virtual ~CaptureWindowTracker() {}
1733
1734   void CreateCaptureWindow(aura::Window* root_window) {
1735     capture_window_.reset(test::CreateTestWindowWithDelegate(
1736         this, -1234, gfx::Rect(20, 20, 20, 20), root_window));
1737     capture_window_->SetCapture();
1738   }
1739
1740   void reset() {
1741     capture_window_.reset();
1742   }
1743
1744   virtual void OnCaptureLost() OVERRIDE {
1745     capture_window_.reset();
1746   }
1747
1748   virtual void OnWindowDestroyed(Window* window) OVERRIDE {
1749     TestWindowDelegate::OnWindowDestroyed(window);
1750     capture_window_.reset();
1751   }
1752
1753   aura::Window* capture_window() { return capture_window_.get(); }
1754
1755  private:
1756   scoped_ptr<aura::Window> capture_window_;
1757
1758   DISALLOW_COPY_AND_ASSIGN(CaptureWindowTracker);
1759 };
1760
1761 }
1762
1763 // Verifies handling loss of capture by the capture window being hidden.
1764 TEST_F(WindowEventDispatcherTest, CaptureWindowHidden) {
1765   CaptureWindowTracker capture_window_tracker;
1766   capture_window_tracker.CreateCaptureWindow(root_window());
1767   capture_window_tracker.capture_window()->Hide();
1768   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1769 }
1770
1771 // Verifies handling loss of capture by the capture window being destroyed.
1772 TEST_F(WindowEventDispatcherTest, CaptureWindowDestroyed) {
1773   CaptureWindowTracker capture_window_tracker;
1774   capture_window_tracker.CreateCaptureWindow(root_window());
1775   capture_window_tracker.reset();
1776   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1777 }
1778
1779 class ExitMessageLoopOnMousePress : public ui::test::TestEventHandler {
1780  public:
1781   ExitMessageLoopOnMousePress() {}
1782   virtual ~ExitMessageLoopOnMousePress() {}
1783
1784  protected:
1785   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1786     ui::test::TestEventHandler::OnMouseEvent(event);
1787     if (event->type() == ui::ET_MOUSE_PRESSED)
1788       base::MessageLoopForUI::current()->Quit();
1789   }
1790
1791  private:
1792   DISALLOW_COPY_AND_ASSIGN(ExitMessageLoopOnMousePress);
1793 };
1794
1795 class WindowEventDispatcherTestWithMessageLoop
1796     : public WindowEventDispatcherTest {
1797  public:
1798   WindowEventDispatcherTestWithMessageLoop() {}
1799   virtual ~WindowEventDispatcherTestWithMessageLoop() {}
1800
1801   void RunTest() {
1802     // Reset any event the window may have received when bringing up the window
1803     // (e.g. mouse-move events if the mouse cursor is over the window).
1804     handler_.Reset();
1805
1806     // Start a nested message-loop, post an event to be dispatched, and then
1807     // terminate the message-loop. When the message-loop unwinds and gets back,
1808     // the reposted event should not have fired.
1809     scoped_ptr<ui::MouseEvent> mouse(new ui::MouseEvent(ui::ET_MOUSE_PRESSED,
1810                                                         gfx::Point(10, 10),
1811                                                         gfx::Point(10, 10),
1812                                                         ui::EF_NONE,
1813                                                         ui::EF_NONE));
1814     message_loop()->PostTask(
1815         FROM_HERE,
1816         base::Bind(&WindowEventDispatcherTestWithMessageLoop::RepostEventHelper,
1817                    host()->dispatcher(),
1818                    base::Passed(&mouse)));
1819     message_loop()->PostTask(FROM_HERE, message_loop()->QuitClosure());
1820
1821     base::MessageLoop::ScopedNestableTaskAllower allow(message_loop());
1822     base::RunLoop loop;
1823     loop.Run();
1824     EXPECT_EQ(0, handler_.num_mouse_events());
1825
1826     // Let the current message-loop run. The event-handler will terminate the
1827     // message-loop when it receives the reposted event.
1828   }
1829
1830   base::MessageLoop* message_loop() {
1831     return base::MessageLoopForUI::current();
1832   }
1833
1834  protected:
1835   virtual void SetUp() OVERRIDE {
1836     WindowEventDispatcherTest::SetUp();
1837     window_.reset(CreateNormalWindow(1, root_window(), NULL));
1838     window_->AddPreTargetHandler(&handler_);
1839   }
1840
1841   virtual void TearDown() OVERRIDE {
1842     window_.reset();
1843     WindowEventDispatcherTest::TearDown();
1844   }
1845
1846  private:
1847   // Used to avoid a copying |event| when binding to a closure.
1848   static void RepostEventHelper(WindowEventDispatcher* dispatcher,
1849                                 scoped_ptr<ui::MouseEvent> event) {
1850     dispatcher->RepostEvent(*event);
1851   }
1852
1853   scoped_ptr<Window> window_;
1854   ExitMessageLoopOnMousePress handler_;
1855
1856   DISALLOW_COPY_AND_ASSIGN(WindowEventDispatcherTestWithMessageLoop);
1857 };
1858
1859 TEST_F(WindowEventDispatcherTestWithMessageLoop, EventRepostedInNonNestedLoop) {
1860   CHECK(!message_loop()->is_running());
1861   // Perform the test in a callback, so that it runs after the message-loop
1862   // starts.
1863   message_loop()->PostTask(
1864       FROM_HERE, base::Bind(
1865           &WindowEventDispatcherTestWithMessageLoop::RunTest,
1866           base::Unretained(this)));
1867   message_loop()->Run();
1868 }
1869
1870 class WindowEventDispatcherTestInHighDPI : public WindowEventDispatcherTest {
1871  public:
1872   WindowEventDispatcherTestInHighDPI() {}
1873   virtual ~WindowEventDispatcherTestInHighDPI() {}
1874
1875  protected:
1876   virtual void SetUp() OVERRIDE {
1877     WindowEventDispatcherTest::SetUp();
1878     test_screen()->SetDeviceScaleFactor(2.f);
1879   }
1880 };
1881
1882 TEST_F(WindowEventDispatcherTestInHighDPI, EventLocationTransform) {
1883   test::TestWindowDelegate delegate;
1884   scoped_ptr<aura::Window> child(test::CreateTestWindowWithDelegate(&delegate,
1885       1234, gfx::Rect(20, 20, 100, 100), root_window()));
1886   child->Show();
1887
1888   ui::test::TestEventHandler handler_child;
1889   ui::test::TestEventHandler handler_root;
1890   root_window()->AddPreTargetHandler(&handler_root);
1891   child->AddPreTargetHandler(&handler_child);
1892
1893   {
1894     ui::MouseEvent move(ui::ET_MOUSE_MOVED,
1895                         gfx::Point(30, 30), gfx::Point(30, 30),
1896                         ui::EF_NONE, ui::EF_NONE);
1897     DispatchEventUsingWindowDispatcher(&move);
1898     EXPECT_EQ(0, handler_child.num_mouse_events());
1899     EXPECT_EQ(1, handler_root.num_mouse_events());
1900   }
1901
1902   {
1903     ui::MouseEvent move(ui::ET_MOUSE_MOVED,
1904                         gfx::Point(50, 50), gfx::Point(50, 50),
1905                         ui::EF_NONE, ui::EF_NONE);
1906     DispatchEventUsingWindowDispatcher(&move);
1907     // The child receives an ENTER, and a MOVED event.
1908     EXPECT_EQ(2, handler_child.num_mouse_events());
1909     // The root receives both the ENTER and the MOVED events dispatched to
1910     // |child|, as well as an EXIT event.
1911     EXPECT_EQ(3, handler_root.num_mouse_events());
1912   }
1913
1914   child->RemovePreTargetHandler(&handler_child);
1915   root_window()->RemovePreTargetHandler(&handler_root);
1916 }
1917
1918 TEST_F(WindowEventDispatcherTestInHighDPI, TouchMovesHeldOnScroll) {
1919   EventFilterRecorder recorder;
1920   root_window()->AddPreTargetHandler(&recorder);
1921   test::TestWindowDelegate delegate;
1922   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
1923   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1924       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
1925   window->AddPreTargetHandler(&handler);
1926
1927   test::EventGenerator generator(root_window());
1928   generator.GestureScrollSequence(
1929       gfx::Point(120, 120), gfx::Point(20, 120),
1930       base::TimeDelta::FromMilliseconds(100), 25);
1931
1932   // |handler| will have reset |filter| and started holding the touch-move
1933   // events when scrolling started. At the end of the scroll (i.e. upon
1934   // touch-release), the held touch-move event will have been dispatched first,
1935   // along with the subsequent events (i.e. touch-release, scroll-end, and
1936   // gesture-end).
1937   const EventFilterRecorder::Events& events = recorder.events();
1938   EXPECT_EQ(
1939       "TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
1940       "GESTURE_SCROLL_END GESTURE_END",
1941       EventTypesToString(events));
1942   ASSERT_EQ(2u, recorder.touch_locations().size());
1943   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
1944             recorder.touch_locations()[0].ToString());
1945   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
1946             recorder.touch_locations()[1].ToString());
1947 }
1948
1949 class SelfDestructDelegate : public test::TestWindowDelegate {
1950  public:
1951   SelfDestructDelegate() {}
1952   virtual ~SelfDestructDelegate() {}
1953
1954   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1955     window_.reset();
1956   }
1957
1958   void set_window(scoped_ptr<aura::Window> window) {
1959     window_ = window.Pass();
1960   }
1961   bool has_window() const { return !!window_.get(); }
1962
1963  private:
1964   scoped_ptr<aura::Window> window_;
1965   DISALLOW_COPY_AND_ASSIGN(SelfDestructDelegate);
1966 };
1967
1968 TEST_F(WindowEventDispatcherTest, SynthesizedLocatedEvent) {
1969   test::EventGenerator generator(root_window());
1970   generator.MoveMouseTo(10, 10);
1971   EXPECT_EQ("10,10",
1972             Env::GetInstance()->last_mouse_location().ToString());
1973
1974   // Synthesized event should not update the mouse location.
1975   ui::MouseEvent mouseev(ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(),
1976                          ui::EF_IS_SYNTHESIZED, 0);
1977   generator.Dispatch(&mouseev);
1978   EXPECT_EQ("10,10",
1979             Env::GetInstance()->last_mouse_location().ToString());
1980
1981   generator.MoveMouseTo(0, 0);
1982   EXPECT_EQ("0,0",
1983             Env::GetInstance()->last_mouse_location().ToString());
1984
1985   // Make sure the location gets updated when a syntheiszed enter
1986   // event destroyed the window.
1987   SelfDestructDelegate delegate;
1988   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1989       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
1990   delegate.set_window(window.Pass());
1991   EXPECT_TRUE(delegate.has_window());
1992
1993   generator.MoveMouseTo(100, 100);
1994   EXPECT_FALSE(delegate.has_window());
1995   EXPECT_EQ("100,100",
1996             Env::GetInstance()->last_mouse_location().ToString());
1997 }
1998
1999 class StaticFocusClient : public client::FocusClient {
2000  public:
2001   explicit StaticFocusClient(Window* focused)
2002       : focused_(focused) {}
2003   virtual ~StaticFocusClient() {}
2004
2005  private:
2006   // client::FocusClient:
2007   virtual void AddObserver(client::FocusChangeObserver* observer) OVERRIDE {}
2008   virtual void RemoveObserver(client::FocusChangeObserver* observer) OVERRIDE {}
2009   virtual void FocusWindow(Window* window) OVERRIDE {}
2010   virtual void ResetFocusWithinActiveWindow(Window* window) OVERRIDE {}
2011   virtual Window* GetFocusedWindow() OVERRIDE { return focused_; }
2012
2013   Window* focused_;
2014
2015   DISALLOW_COPY_AND_ASSIGN(StaticFocusClient);
2016 };
2017
2018 // Tests that host-cancel-mode event can be dispatched to a dispatcher safely
2019 // when the focused window does not live in the dispatcher's tree.
2020 TEST_F(WindowEventDispatcherTest, HostCancelModeWithFocusedWindowOutside) {
2021   test::TestWindowDelegate delegate;
2022   scoped_ptr<Window> focused(CreateTestWindowWithDelegate(&delegate, 123,
2023       gfx::Rect(20, 30, 100, 50), NULL));
2024   StaticFocusClient focus_client(focused.get());
2025   client::SetFocusClient(root_window(), &focus_client);
2026   EXPECT_FALSE(root_window()->Contains(focused.get()));
2027   EXPECT_EQ(focused.get(),
2028             client::GetFocusClient(root_window())->GetFocusedWindow());
2029   host()->dispatcher()->DispatchCancelModeEvent();
2030   EXPECT_EQ(focused.get(),
2031             client::GetFocusClient(root_window())->GetFocusedWindow());
2032 }
2033
2034 // Dispatches a mouse-move event to |target| when it receives a mouse-move
2035 // event.
2036 class DispatchEventHandler : public ui::EventHandler {
2037  public:
2038   explicit DispatchEventHandler(Window* target)
2039       : target_(target),
2040         dispatched_(false) {}
2041   virtual ~DispatchEventHandler() {}
2042
2043   bool dispatched() const { return dispatched_; }
2044  private:
2045   // ui::EventHandler:
2046   virtual void OnMouseEvent(ui::MouseEvent* mouse) OVERRIDE {
2047     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2048       ui::MouseEvent move(ui::ET_MOUSE_MOVED, target_->bounds().CenterPoint(),
2049           target_->bounds().CenterPoint(), ui::EF_NONE, ui::EF_NONE);
2050       ui::EventDispatchDetails details =
2051           target_->GetHost()->dispatcher()->OnEventFromSource(&move);
2052       ASSERT_FALSE(details.dispatcher_destroyed);
2053       EXPECT_FALSE(details.target_destroyed);
2054       EXPECT_EQ(target_, move.target());
2055       dispatched_ = true;
2056     }
2057     ui::EventHandler::OnMouseEvent(mouse);
2058   }
2059
2060   Window* target_;
2061   bool dispatched_;
2062
2063   DISALLOW_COPY_AND_ASSIGN(DispatchEventHandler);
2064 };
2065
2066 // Moves |window| to |root_window| when it receives a mouse-move event.
2067 class MoveWindowHandler : public ui::EventHandler {
2068  public:
2069   MoveWindowHandler(Window* window, Window* root_window)
2070       : window_to_move_(window),
2071         root_window_to_move_to_(root_window) {}
2072   virtual ~MoveWindowHandler() {}
2073
2074  private:
2075   // ui::EventHandler:
2076   virtual void OnMouseEvent(ui::MouseEvent* mouse) OVERRIDE {
2077     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2078       root_window_to_move_to_->AddChild(window_to_move_);
2079     }
2080     ui::EventHandler::OnMouseEvent(mouse);
2081   }
2082
2083   Window* window_to_move_;
2084   Window* root_window_to_move_to_;
2085
2086   DISALLOW_COPY_AND_ASSIGN(MoveWindowHandler);
2087 };
2088
2089 // Tests that nested event dispatch works correctly if the target of the older
2090 // event being dispatched is moved to a different dispatcher in response to an
2091 // event in the inner loop.
2092 TEST_F(WindowEventDispatcherTest, NestedEventDispatchTargetMoved) {
2093   scoped_ptr<WindowTreeHost> second_host(
2094       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2095   second_host->InitHost();
2096   Window* second_root = second_host->window();
2097
2098   // Create two windows parented to |root_window()|.
2099   test::TestWindowDelegate delegate;
2100   scoped_ptr<Window> first(CreateTestWindowWithDelegate(&delegate, 123,
2101       gfx::Rect(20, 10, 10, 20), root_window()));
2102   scoped_ptr<Window> second(CreateTestWindowWithDelegate(&delegate, 234,
2103       gfx::Rect(40, 10, 50, 20), root_window()));
2104
2105   // Setup a handler on |first| so that it dispatches an event to |second| when
2106   // |first| receives an event.
2107   DispatchEventHandler dispatch_event(second.get());
2108   first->AddPreTargetHandler(&dispatch_event);
2109
2110   // Setup a handler on |second| so that it moves |first| into |second_root|
2111   // when |second| receives an event.
2112   MoveWindowHandler move_window(first.get(), second_root);
2113   second->AddPreTargetHandler(&move_window);
2114
2115   // Some sanity checks: |first| is inside |root_window()|'s tree.
2116   EXPECT_EQ(root_window(), first->GetRootWindow());
2117   // The two root windows are different.
2118   EXPECT_NE(root_window(), second_root);
2119
2120   // Dispatch an event to |first|.
2121   ui::MouseEvent move(ui::ET_MOUSE_MOVED, first->bounds().CenterPoint(),
2122                       first->bounds().CenterPoint(), ui::EF_NONE, ui::EF_NONE);
2123   ui::EventDispatchDetails details =
2124       host()->dispatcher()->OnEventFromSource(&move);
2125   ASSERT_FALSE(details.dispatcher_destroyed);
2126   EXPECT_TRUE(details.target_destroyed);
2127   EXPECT_EQ(first.get(), move.target());
2128   EXPECT_TRUE(dispatch_event.dispatched());
2129   EXPECT_EQ(second_root, first->GetRootWindow());
2130
2131   first->RemovePreTargetHandler(&dispatch_event);
2132   second->RemovePreTargetHandler(&move_window);
2133 }
2134
2135 class AlwaysMouseDownInputStateLookup : public InputStateLookup {
2136  public:
2137   AlwaysMouseDownInputStateLookup() {}
2138   virtual ~AlwaysMouseDownInputStateLookup() {}
2139
2140  private:
2141   // InputStateLookup:
2142   virtual bool IsMouseButtonDown() const OVERRIDE { return true; }
2143
2144   DISALLOW_COPY_AND_ASSIGN(AlwaysMouseDownInputStateLookup);
2145 };
2146
2147 TEST_F(WindowEventDispatcherTest,
2148        CursorVisibilityChangedWhileCaptureWindowInAnotherDispatcher) {
2149   test::EventCountDelegate delegate;
2150   scoped_ptr<Window> window(CreateTestWindowWithDelegate(&delegate, 123,
2151       gfx::Rect(20, 10, 10, 20), root_window()));
2152   window->Show();
2153
2154   scoped_ptr<WindowTreeHost> second_host(
2155       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2156   second_host->InitHost();
2157   WindowEventDispatcher* second_dispatcher = second_host->dispatcher();
2158
2159   // Install an InputStateLookup on the Env that always claims that a
2160   // mouse-button is down.
2161   test::EnvTestHelper(Env::GetInstance()).SetInputStateLookup(
2162       scoped_ptr<InputStateLookup>(new AlwaysMouseDownInputStateLookup()));
2163
2164   window->SetCapture();
2165
2166   // Because the mouse button is down, setting the capture on |window| will set
2167   // it as the mouse-move handler for |root_window()|.
2168   EXPECT_EQ(window.get(), host()->dispatcher()->mouse_moved_handler());
2169
2170   // This does not set |window| as the mouse-move handler for the second
2171   // dispatcher.
2172   EXPECT_EQ(NULL, second_dispatcher->mouse_moved_handler());
2173
2174   // However, some capture-client updates the capture in each root-window on a
2175   // capture. Emulate that here. Because of this, the second dispatcher also has
2176   // |window| as the mouse-move handler.
2177   client::CaptureDelegate* second_capture_delegate = second_dispatcher;
2178   second_capture_delegate->UpdateCapture(NULL, window.get());
2179   EXPECT_EQ(window.get(), second_dispatcher->mouse_moved_handler());
2180
2181   // Reset the mouse-event counts for |window|.
2182   delegate.GetMouseMotionCountsAndReset();
2183
2184   // Notify both hosts that the cursor is now hidden. This should send a single
2185   // mouse-exit event to |window|.
2186   host()->OnCursorVisibilityChanged(false);
2187   second_host->OnCursorVisibilityChanged(false);
2188   EXPECT_EQ("0 0 1", delegate.GetMouseMotionCountsAndReset());
2189 }
2190
2191 }  // namespace aura