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 that a mouse-move event is not synthesized when a mouse-button is down.
 913 TEST_F(WindowEventDispatcherTest, DoNotSynthesizeWhileButtonDown) {
 914   EventFilterRecorder recorder;
 915   test::TestWindowDelegate delegate;
 916   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 917       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
 918   window->Show();
 919
 920   window->AddPreTargetHandler(&recorder);
 921   // Dispatch a non-synthetic mouse event when mouse events are enabled.
 922   ui::MouseEvent mouse1(ui::ET_MOUSE_PRESSED, gfx::Point(10, 10),
 923                         gfx::Point(10, 10), ui::EF_LEFT_MOUSE_BUTTON,
 924                         ui::EF_LEFT_MOUSE_BUTTON);
 925   DispatchEventUsingWindowDispatcher(&mouse1);
 926   ASSERT_EQ(1u, recorder.events().size());
 927   EXPECT_EQ(ui::ET_MOUSE_PRESSED, recorder.events()[0]);
 928   window->RemovePreTargetHandler(&recorder);
 929   recorder.Reset();
 930
 931   // Move |window| away from underneath the cursor.
 932   root_window()->AddPreTargetHandler(&recorder);
 933   window->SetBounds(gfx::Rect(30, 30, 100, 100));
 934   EXPECT_TRUE(recorder.events().empty());
 935   RunAllPendingInMessageLoop();
 936   EXPECT_TRUE(recorder.events().empty());
 937   root_window()->RemovePreTargetHandler(&recorder);
 938 }
 939
 940 // Tests synthetic mouse events generated when window bounds changes such that
 941 // the cursor previously outside the window becomes inside, or vice versa.
 942 // Do not synthesize events if the window ignores events or is invisible.
 943 TEST_F(WindowEventDispatcherTest, SynthesizeMouseEventsOnWindowBoundsChanged) {
 944   test::TestWindowDelegate delegate;
 945   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
 946       &delegate, 1234, gfx::Rect(5, 5, 100, 100), root_window()));
 947   window->Show();
 948   window->SetCapture();
 949
 950   EventFilterRecorder recorder;
 951   window->AddPreTargetHandler(&recorder);
 952
 953   // Dispatch a non-synthetic mouse event to place cursor inside window bounds.
 954   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 955                        gfx::Point(10, 10), 0, 0);
 956   DispatchEventUsingWindowDispatcher(&mouse);
 957   EXPECT_FALSE(recorder.events().empty());
 958   recorder.Reset();
 959
 960   // Update the window bounds so that cursor is now outside the window.
 961   // This should trigger a synthetic MOVED event.
 962   gfx::Rect bounds1(20, 20, 100, 100);
 963   window->SetBounds(bounds1);
 964   RunAllPendingInMessageLoop();
 965   ASSERT_FALSE(recorder.events().empty());
 966   ASSERT_FALSE(recorder.mouse_event_flags().empty());
 967   EXPECT_EQ(ui::ET_MOUSE_MOVED, recorder.events().back());
 968   EXPECT_EQ(ui::EF_IS_SYNTHESIZED, recorder.mouse_event_flags().back());
 969   recorder.Reset();
 970
 971   // Set window to ignore events.
 972   window->set_ignore_events(true);
 973
 974   // Update the window bounds so that cursor is back inside the window.
 975   // This should not trigger a synthetic event.
 976   gfx::Rect bounds2(5, 5, 100, 100);
 977   window->SetBounds(bounds2);
 978   RunAllPendingInMessageLoop();
 979   EXPECT_TRUE(recorder.events().empty());
 980   recorder.Reset();
 981
 982   // Set window to accept events but invisible.
 983   window->set_ignore_events(false);
 984   window->Hide();
 985   recorder.Reset();
 986
 987   // Update the window bounds so that cursor is outside the window.
 988   // This should not trigger a synthetic event.
 989   window->SetBounds(bounds1);
 990   RunAllPendingInMessageLoop();
 991   EXPECT_TRUE(recorder.events().empty());
 992 }
 993
 994 // Tests that a mouse exit is dispatched to the last known cursor location
 995 // when the cursor becomes invisible.
 996 TEST_F(WindowEventDispatcherTest, DispatchMouseExitWhenCursorHidden) {
 997   EventFilterRecorder recorder;
 998   root_window()->AddPreTargetHandler(&recorder);
 999
1000   test::TestWindowDelegate delegate;
1001   gfx::Point window_origin(7, 18);
1002   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1003       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
1004       root_window()));
1005   window->Show();
1006
1007   // Dispatch a mouse move event into the window.
1008   gfx::Point mouse_location(gfx::Point(15, 25));
1009   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location,
1010                         mouse_location, 0, 0);
1011   EXPECT_TRUE(recorder.events().empty());
1012   DispatchEventUsingWindowDispatcher(&mouse1);
1013   EXPECT_FALSE(recorder.events().empty());
1014   recorder.Reset();
1015
1016   // Hide the cursor and verify a mouse exit was dispatched.
1017   host()->OnCursorVisibilityChanged(false);
1018   EXPECT_FALSE(recorder.events().empty());
1019   EXPECT_EQ("MOUSE_EXITED", EventTypesToString(recorder.events()));
1020
1021   // Verify the mouse exit was dispatched at the correct location
1022   // (in the correct coordinate space).
1023   int translated_x = mouse_location.x() - window_origin.x();
1024   int translated_y = mouse_location.y() - window_origin.y();
1025   gfx::Point translated_point(translated_x, translated_y);
1026   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
1027   root_window()->RemovePreTargetHandler(&recorder);
1028 }
1029
1030 // Tests that a synthetic mouse exit is dispatched to the last known cursor
1031 // location after mouse events are disabled on the cursor client.
1032 TEST_F(WindowEventDispatcherTest,
1033        DispatchSyntheticMouseExitAfterMouseEventsDisabled) {
1034   EventFilterRecorder recorder;
1035   root_window()->AddPreTargetHandler(&recorder);
1036
1037   test::TestWindowDelegate delegate;
1038   gfx::Point window_origin(7, 18);
1039   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1040       &delegate, 1234, gfx::Rect(window_origin, gfx::Size(100, 100)),
1041       root_window()));
1042   window->Show();
1043
1044   // Dispatch a mouse move event into the window.
1045   gfx::Point mouse_location(gfx::Point(15, 25));
1046   ui::MouseEvent mouse1(ui::ET_MOUSE_MOVED, mouse_location,
1047                         mouse_location, 0, 0);
1048   EXPECT_TRUE(recorder.events().empty());
1049   DispatchEventUsingWindowDispatcher(&mouse1);
1050   EXPECT_FALSE(recorder.events().empty());
1051   recorder.Reset();
1052
1053   test::TestCursorClient cursor_client(root_window());
1054   cursor_client.DisableMouseEvents();
1055
1056   gfx::Point mouse_exit_location(gfx::Point(150, 150));
1057   ui::MouseEvent mouse2(ui::ET_MOUSE_EXITED, gfx::Point(150, 150),
1058                         gfx::Point(150, 150), ui::EF_IS_SYNTHESIZED, 0);
1059   DispatchEventUsingWindowDispatcher(&mouse2);
1060
1061   EXPECT_FALSE(recorder.events().empty());
1062   // We get the mouse exited event twice in our filter. Once during the
1063   // predispatch phase and during the actual dispatch.
1064   EXPECT_EQ("MOUSE_EXITED MOUSE_EXITED", EventTypesToString(recorder.events()));
1065
1066   // Verify the mouse exit was dispatched at the correct location
1067   // (in the correct coordinate space).
1068   int translated_x = mouse_exit_location.x() - window_origin.x();
1069   int translated_y = mouse_exit_location.y() - window_origin.y();
1070   gfx::Point translated_point(translated_x, translated_y);
1071   EXPECT_EQ(recorder.mouse_location(0).ToString(), translated_point.ToString());
1072   root_window()->RemovePreTargetHandler(&recorder);
1073 }
1074
1075 class DeletingEventFilter : public ui::EventHandler {
1076  public:
1077   DeletingEventFilter()
1078       : delete_during_pre_handle_(false) {}
1079   virtual ~DeletingEventFilter() {}
1080
1081   void Reset(bool delete_during_pre_handle) {
1082     delete_during_pre_handle_ = delete_during_pre_handle;
1083   }
1084
1085  private:
1086   // Overridden from ui::EventHandler:
1087   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
1088     if (delete_during_pre_handle_)
1089       delete event->target();
1090   }
1091
1092   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1093     if (delete_during_pre_handle_)
1094       delete event->target();
1095   }
1096
1097   bool delete_during_pre_handle_;
1098
1099   DISALLOW_COPY_AND_ASSIGN(DeletingEventFilter);
1100 };
1101
1102 class DeletingWindowDelegate : public test::TestWindowDelegate {
1103  public:
1104   DeletingWindowDelegate()
1105       : window_(NULL),
1106         delete_during_handle_(false),
1107         got_event_(false) {}
1108   virtual ~DeletingWindowDelegate() {}
1109
1110   void Reset(Window* window, bool delete_during_handle) {
1111     window_ = window;
1112     delete_during_handle_ = delete_during_handle;
1113     got_event_ = false;
1114   }
1115   bool got_event() const { return got_event_; }
1116
1117  private:
1118   // Overridden from WindowDelegate:
1119   virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
1120     if (delete_during_handle_)
1121       delete window_;
1122     got_event_ = true;
1123   }
1124
1125   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1126     if (delete_during_handle_)
1127       delete window_;
1128     got_event_ = true;
1129   }
1130
1131   Window* window_;
1132   bool delete_during_handle_;
1133   bool got_event_;
1134
1135   DISALLOW_COPY_AND_ASSIGN(DeletingWindowDelegate);
1136 };
1137
1138 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringDispatch) {
1139   // Verifies that we can delete a window during each phase of event handling.
1140   // Deleting the window should not cause a crash, only prevent further
1141   // processing from occurring.
1142   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1143   DeletingWindowDelegate d11;
1144   Window* w11 = CreateNormalWindow(11, w1.get(), &d11);
1145   WindowTracker tracker;
1146   DeletingEventFilter w1_filter;
1147   w1->AddPreTargetHandler(&w1_filter);
1148   client::GetFocusClient(w1.get())->FocusWindow(w11);
1149
1150   test::EventGenerator generator(root_window(), w11);
1151
1152   // First up, no one deletes anything.
1153   tracker.Add(w11);
1154   d11.Reset(w11, false);
1155
1156   generator.PressLeftButton();
1157   EXPECT_TRUE(tracker.Contains(w11));
1158   EXPECT_TRUE(d11.got_event());
1159   generator.ReleaseLeftButton();
1160
1161   // Delegate deletes w11. This will prevent the post-handle step from applying.
1162   w1_filter.Reset(false);
1163   d11.Reset(w11, true);
1164   generator.PressKey(ui::VKEY_A, 0);
1165   EXPECT_FALSE(tracker.Contains(w11));
1166   EXPECT_TRUE(d11.got_event());
1167
1168   // Pre-handle step deletes w11. This will prevent the delegate and the post-
1169   // handle steps from applying.
1170   w11 = CreateNormalWindow(11, w1.get(), &d11);
1171   w1_filter.Reset(true);
1172   d11.Reset(w11, false);
1173   generator.PressLeftButton();
1174   EXPECT_FALSE(tracker.Contains(w11));
1175   EXPECT_FALSE(d11.got_event());
1176 }
1177
1178 namespace {
1179
1180 // A window delegate that detaches the parent of the target's parent window when
1181 // it receives a tap event.
1182 class DetachesParentOnTapDelegate : public test::TestWindowDelegate {
1183  public:
1184   DetachesParentOnTapDelegate() {}
1185   virtual ~DetachesParentOnTapDelegate() {}
1186
1187  private:
1188   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1189     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1190       event->SetHandled();
1191       return;
1192     }
1193
1194     if (event->type() == ui::ET_GESTURE_TAP) {
1195       Window* parent = static_cast<Window*>(event->target())->parent();
1196       parent->parent()->RemoveChild(parent);
1197       event->SetHandled();
1198     }
1199   }
1200
1201   DISALLOW_COPY_AND_ASSIGN(DetachesParentOnTapDelegate);
1202 };
1203
1204 }  // namespace
1205
1206 // Tests that the gesture recognizer is reset for all child windows when a
1207 // window hides. No expectations, just checks that the test does not crash.
1208 TEST_F(WindowEventDispatcherTest,
1209        GestureRecognizerResetsTargetWhenParentHides) {
1210   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1211   DetachesParentOnTapDelegate delegate;
1212   scoped_ptr<Window> parent(CreateNormalWindow(22, w1.get(), NULL));
1213   Window* child = CreateNormalWindow(11, parent.get(), &delegate);
1214   test::EventGenerator generator(root_window(), child);
1215   generator.GestureTapAt(gfx::Point(40, 40));
1216 }
1217
1218 namespace {
1219
1220 // A window delegate that processes nested gestures on tap.
1221 class NestedGestureDelegate : public test::TestWindowDelegate {
1222  public:
1223   NestedGestureDelegate(test::EventGenerator* generator,
1224                         const gfx::Point tap_location)
1225       : generator_(generator),
1226         tap_location_(tap_location),
1227         gesture_end_count_(0) {}
1228   virtual ~NestedGestureDelegate() {}
1229
1230   int gesture_end_count() const { return gesture_end_count_; }
1231
1232  private:
1233   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1234     switch (event->type()) {
1235       case ui::ET_GESTURE_TAP_DOWN:
1236         event->SetHandled();
1237         break;
1238       case ui::ET_GESTURE_TAP:
1239         if (generator_)
1240           generator_->GestureTapAt(tap_location_);
1241         event->SetHandled();
1242         break;
1243       case ui::ET_GESTURE_END:
1244         ++gesture_end_count_;
1245         break;
1246       default:
1247         break;
1248     }
1249   }
1250
1251   test::EventGenerator* generator_;
1252   const gfx::Point tap_location_;
1253   int gesture_end_count_;
1254   DISALLOW_COPY_AND_ASSIGN(NestedGestureDelegate);
1255 };
1256
1257 }  // namespace
1258
1259 // Tests that gesture end is delivered after nested gesture processing.
1260 TEST_F(WindowEventDispatcherTest, GestureEndDeliveredAfterNestedGestures) {
1261   NestedGestureDelegate d1(NULL, gfx::Point());
1262   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &d1));
1263   w1->SetBounds(gfx::Rect(0, 0, 100, 100));
1264
1265   test::EventGenerator nested_generator(root_window(), w1.get());
1266   NestedGestureDelegate d2(&nested_generator, w1->bounds().CenterPoint());
1267   scoped_ptr<Window> w2(CreateNormalWindow(1, root_window(), &d2));
1268   w2->SetBounds(gfx::Rect(100, 0, 100, 100));
1269
1270   // Tap on w2 which triggers nested gestures for w1.
1271   test::EventGenerator generator(root_window(), w2.get());
1272   generator.GestureTapAt(w2->bounds().CenterPoint());
1273
1274   // Both windows should get their gesture end events.
1275   EXPECT_EQ(1, d1.gesture_end_count());
1276   EXPECT_EQ(1, d2.gesture_end_count());
1277 }
1278
1279 // Tests whether we can repost the Tap down gesture event.
1280 TEST_F(WindowEventDispatcherTest, RepostTapdownGestureTest) {
1281   EventFilterRecorder recorder;
1282   root_window()->AddPreTargetHandler(&recorder);
1283
1284   test::TestWindowDelegate delegate;
1285   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1286       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1287
1288   ui::GestureEventDetails details(ui::ET_GESTURE_TAP_DOWN, 0.0f, 0.0f);
1289   gfx::Point point(10, 10);
1290   ui::GestureEvent event(ui::ET_GESTURE_TAP_DOWN,
1291                          point.x(),
1292                          point.y(),
1293                          0,
1294                          ui::EventTimeForNow(),
1295                          details,
1296                          0);
1297   host()->dispatcher()->RepostEvent(event);
1298   RunAllPendingInMessageLoop();
1299   // TODO(rbyers): Currently disabled - crbug.com/170987
1300   EXPECT_FALSE(EventTypesToString(recorder.events()).find("GESTURE_TAP_DOWN") !=
1301               std::string::npos);
1302   recorder.Reset();
1303   root_window()->RemovePreTargetHandler(&recorder);
1304 }
1305
1306 // This class inherits from the EventFilterRecorder class which provides a
1307 // facility to record events. This class additionally provides a facility to
1308 // repost the ET_GESTURE_TAP_DOWN gesture to the target window and records
1309 // events after that.
1310 class RepostGestureEventRecorder : public EventFilterRecorder {
1311  public:
1312   RepostGestureEventRecorder(aura::Window* repost_source,
1313                              aura::Window* repost_target)
1314       : repost_source_(repost_source),
1315         repost_target_(repost_target),
1316         reposted_(false),
1317         done_cleanup_(false) {}
1318
1319   virtual ~RepostGestureEventRecorder() {}
1320
1321   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE {
1322     if (reposted_ && event->type() == ui::ET_TOUCH_PRESSED) {
1323       done_cleanup_ = true;
1324       Reset();
1325     }
1326     EventFilterRecorder::OnTouchEvent(event);
1327   }
1328
1329   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
1330     EXPECT_EQ(done_cleanup_ ? repost_target_ : repost_source_, event->target());
1331     if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
1332       if (!reposted_) {
1333         EXPECT_NE(repost_target_, event->target());
1334         reposted_ = true;
1335         repost_target_->GetHost()->dispatcher()->RepostEvent(*event);
1336         // Ensure that the reposted gesture event above goes to the
1337         // repost_target_;
1338         repost_source_->GetRootWindow()->RemoveChild(repost_source_);
1339         return;
1340       }
1341     }
1342     EventFilterRecorder::OnGestureEvent(event);
1343   }
1344
1345   // Ignore mouse events as they don't fire at all times. This causes
1346   // the GestureRepostEventOrder test to fail randomly.
1347   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {}
1348
1349  private:
1350   aura::Window* repost_source_;
1351   aura::Window* repost_target_;
1352   // set to true if we reposted the ET_GESTURE_TAP_DOWN event.
1353   bool reposted_;
1354   // set true if we're done cleaning up after hiding repost_source_;
1355   bool done_cleanup_;
1356   DISALLOW_COPY_AND_ASSIGN(RepostGestureEventRecorder);
1357 };
1358
1359 // Tests whether events which are generated after the reposted gesture event
1360 // are received after that. In this case the scroll sequence events should
1361 // be received after the reposted gesture event.
1362 TEST_F(WindowEventDispatcherTest, GestureRepostEventOrder) {
1363   // Expected events at the end for the repost_target window defined below.
1364   const char kExpectedTargetEvents[] =
1365     // TODO)(rbyers): Gesture event reposting is disabled - crbug.com/279039.
1366     // "GESTURE_BEGIN GESTURE_TAP_DOWN "
1367     "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1368     "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE TOUCH_MOVED "
1369     "GESTURE_SCROLL_UPDATE TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
1370     "GESTURE_SCROLL_END GESTURE_END";
1371   // We create two windows.
1372   // The first window (repost_source) is the one to which the initial tap
1373   // gesture is sent. It reposts this event to the second window
1374   // (repost_target).
1375   // We then generate the scroll sequence for repost_target and look for two
1376   // ET_GESTURE_TAP_DOWN events in the event list at the end.
1377   test::TestWindowDelegate delegate;
1378   scoped_ptr<aura::Window> repost_target(CreateTestWindowWithDelegate(
1379       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1380
1381   scoped_ptr<aura::Window> repost_source(CreateTestWindowWithDelegate(
1382       &delegate, 1, gfx::Rect(0, 0, 50, 50), root_window()));
1383
1384   RepostGestureEventRecorder repost_event_recorder(repost_source.get(),
1385                                                    repost_target.get());
1386   root_window()->AddPreTargetHandler(&repost_event_recorder);
1387
1388   // Generate a tap down gesture for the repost_source. This will be reposted
1389   // to repost_target.
1390   test::EventGenerator repost_generator(root_window(), repost_source.get());
1391   repost_generator.GestureTapAt(gfx::Point(40, 40));
1392   RunAllPendingInMessageLoop();
1393
1394   test::EventGenerator scroll_generator(root_window(), repost_target.get());
1395   scroll_generator.GestureScrollSequence(
1396       gfx::Point(80, 80),
1397       gfx::Point(100, 100),
1398       base::TimeDelta::FromMilliseconds(100),
1399       3);
1400   RunAllPendingInMessageLoop();
1401
1402   int tap_down_count = 0;
1403   for (size_t i = 0; i < repost_event_recorder.events().size(); ++i) {
1404     if (repost_event_recorder.events()[i] == ui::ET_GESTURE_TAP_DOWN)
1405       ++tap_down_count;
1406   }
1407
1408   // We expect two tap down events. One from the repost and the other one from
1409   // the scroll sequence posted above.
1410   // TODO(rbyers): Currently disabled - crbug.com/170987
1411   EXPECT_EQ(1, tap_down_count);
1412
1413   EXPECT_EQ(kExpectedTargetEvents,
1414             EventTypesToString(repost_event_recorder.events()));
1415   root_window()->RemovePreTargetHandler(&repost_event_recorder);
1416 }
1417
1418 class OnMouseExitDeletingEventFilter : public EventFilterRecorder {
1419  public:
1420   OnMouseExitDeletingEventFilter() : window_to_delete_(NULL) {}
1421   virtual ~OnMouseExitDeletingEventFilter() {}
1422
1423   void set_window_to_delete(Window* window_to_delete) {
1424     window_to_delete_ = window_to_delete;
1425   }
1426
1427  private:
1428   // Overridden from ui::EventHandler:
1429   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1430     EventFilterRecorder::OnMouseEvent(event);
1431     if (window_to_delete_) {
1432       delete window_to_delete_;
1433       window_to_delete_ = NULL;
1434     }
1435   }
1436
1437   Window* window_to_delete_;
1438
1439   DISALLOW_COPY_AND_ASSIGN(OnMouseExitDeletingEventFilter);
1440 };
1441
1442 // Tests that RootWindow drops mouse-moved event that is supposed to be sent to
1443 // a child, but the child is destroyed because of the synthesized mouse-exit
1444 // event generated on the previous mouse_moved_handler_.
1445 TEST_F(WindowEventDispatcherTest, DeleteWindowDuringMouseMovedDispatch) {
1446   // Create window 1 and set its event filter. Window 1 will take ownership of
1447   // the event filter.
1448   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), NULL));
1449   OnMouseExitDeletingEventFilter w1_filter;
1450   w1->AddPreTargetHandler(&w1_filter);
1451   w1->SetBounds(gfx::Rect(20, 20, 60, 60));
1452   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1453
1454   test::EventGenerator generator(root_window(), w1.get());
1455
1456   // Move mouse over window 1 to set it as the |mouse_moved_handler_| for the
1457   // root window.
1458   generator.MoveMouseTo(51, 51);
1459   EXPECT_EQ(w1.get(), host()->dispatcher()->mouse_moved_handler());
1460
1461   // Create window 2 under the mouse cursor and stack it above window 1.
1462   Window* w2 = CreateNormalWindow(2, root_window(), NULL);
1463   w2->SetBounds(gfx::Rect(30, 30, 40, 40));
1464   root_window()->StackChildAbove(w2, w1.get());
1465
1466   // Set window 2 as the window that is to be deleted when a mouse-exited event
1467   // happens on window 1.
1468   w1_filter.set_window_to_delete(w2);
1469
1470   // Move mosue over window 2. This should generate a mouse-exited event for
1471   // window 1 resulting in deletion of window 2. The original mouse-moved event
1472   // that was targeted to window 2 should be dropped since window 2 is
1473   // destroyed. This test passes if no crash happens.
1474   generator.MoveMouseTo(52, 52);
1475   EXPECT_EQ(NULL, host()->dispatcher()->mouse_moved_handler());
1476
1477   // Check events received by window 1.
1478   EXPECT_EQ("MOUSE_ENTERED MOUSE_MOVED MOUSE_EXITED",
1479             EventTypesToString(w1_filter.events()));
1480 }
1481
1482 namespace {
1483
1484 // Used to track if OnWindowDestroying() is invoked and if there is a valid
1485 // RootWindow at such time.
1486 class ValidRootDuringDestructionWindowObserver : public aura::WindowObserver {
1487  public:
1488   ValidRootDuringDestructionWindowObserver(bool* got_destroying,
1489                                            bool* has_valid_root)
1490       : got_destroying_(got_destroying),
1491         has_valid_root_(has_valid_root) {
1492   }
1493
1494   // WindowObserver:
1495   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {
1496     *got_destroying_ = true;
1497     *has_valid_root_ = (window->GetRootWindow() != NULL);
1498   }
1499
1500  private:
1501   bool* got_destroying_;
1502   bool* has_valid_root_;
1503
1504   DISALLOW_COPY_AND_ASSIGN(ValidRootDuringDestructionWindowObserver);
1505 };
1506
1507 }  // namespace
1508
1509 // Verifies GetRootWindow() from ~Window returns a valid root.
1510 TEST_F(WindowEventDispatcherTest, ValidRootDuringDestruction) {
1511   bool got_destroying = false;
1512   bool has_valid_root = false;
1513   ValidRootDuringDestructionWindowObserver observer(&got_destroying,
1514                                                     &has_valid_root);
1515   {
1516     scoped_ptr<WindowTreeHost> host(
1517         WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100)));
1518     host->InitHost();
1519     // Owned by WindowEventDispatcher.
1520     Window* w1 = CreateNormalWindow(1, host->window(), NULL);
1521     w1->AddObserver(&observer);
1522   }
1523   EXPECT_TRUE(got_destroying);
1524   EXPECT_TRUE(has_valid_root);
1525 }
1526
1527 namespace {
1528
1529 // See description above DontResetHeldEvent for details.
1530 class DontResetHeldEventWindowDelegate : public test::TestWindowDelegate {
1531  public:
1532   explicit DontResetHeldEventWindowDelegate(aura::Window* root)
1533       : root_(root),
1534         mouse_event_count_(0) {}
1535   virtual ~DontResetHeldEventWindowDelegate() {}
1536
1537   int mouse_event_count() const { return mouse_event_count_; }
1538
1539   // TestWindowDelegate:
1540   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1541     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0 &&
1542         mouse_event_count_++ == 0) {
1543       ui::MouseEvent mouse_event(ui::ET_MOUSE_PRESSED,
1544                                  gfx::Point(10, 10), gfx::Point(10, 10),
1545                                  ui::EF_SHIFT_DOWN, 0);
1546       root_->GetHost()->dispatcher()->RepostEvent(mouse_event);
1547     }
1548   }
1549
1550  private:
1551   Window* root_;
1552   int mouse_event_count_;
1553
1554   DISALLOW_COPY_AND_ASSIGN(DontResetHeldEventWindowDelegate);
1555 };
1556
1557 }  // namespace
1558
1559 // Verifies RootWindow doesn't reset |RootWindow::held_repostable_event_| after
1560 // dispatching. This is done by using DontResetHeldEventWindowDelegate, which
1561 // tracks the number of events with ui::EF_SHIFT_DOWN set (all reposted events
1562 // have EF_SHIFT_DOWN). When the first event is seen RepostEvent() is used to
1563 // schedule another reposted event.
1564 TEST_F(WindowEventDispatcherTest, DontResetHeldEvent) {
1565   DontResetHeldEventWindowDelegate delegate(root_window());
1566   scoped_ptr<Window> w1(CreateNormalWindow(1, root_window(), &delegate));
1567   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1568   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED,
1569                          gfx::Point(10, 10), gfx::Point(10, 10),
1570                          ui::EF_SHIFT_DOWN, 0);
1571   root_window()->GetHost()->dispatcher()->RepostEvent(pressed);
1572   ui::MouseEvent pressed2(ui::ET_MOUSE_PRESSED,
1573                           gfx::Point(10, 10), gfx::Point(10, 10), 0, 0);
1574   // Dispatch an event to flush event scheduled by way of RepostEvent().
1575   DispatchEventUsingWindowDispatcher(&pressed2);
1576   // Delegate should have seen reposted event (identified by way of
1577   // EF_SHIFT_DOWN). Dispatch another event to flush the second
1578   // RepostedEvent().
1579   EXPECT_EQ(1, delegate.mouse_event_count());
1580   DispatchEventUsingWindowDispatcher(&pressed2);
1581   EXPECT_EQ(2, delegate.mouse_event_count());
1582 }
1583
1584 namespace {
1585
1586 // See description above DeleteHostFromHeldMouseEvent for details.
1587 class DeleteHostFromHeldMouseEventDelegate
1588     : public test::TestWindowDelegate {
1589  public:
1590   explicit DeleteHostFromHeldMouseEventDelegate(WindowTreeHost* host)
1591       : host_(host),
1592         got_mouse_event_(false),
1593         got_destroy_(false) {
1594   }
1595   virtual ~DeleteHostFromHeldMouseEventDelegate() {}
1596
1597   bool got_mouse_event() const { return got_mouse_event_; }
1598   bool got_destroy() const { return got_destroy_; }
1599
1600   // TestWindowDelegate:
1601   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1602     if ((event->flags() & ui::EF_SHIFT_DOWN) != 0) {
1603       got_mouse_event_ = true;
1604       delete host_;
1605     }
1606   }
1607   virtual void OnWindowDestroyed(Window* window) OVERRIDE {
1608     got_destroy_ = true;
1609   }
1610
1611  private:
1612   WindowTreeHost* host_;
1613   bool got_mouse_event_;
1614   bool got_destroy_;
1615
1616   DISALLOW_COPY_AND_ASSIGN(DeleteHostFromHeldMouseEventDelegate);
1617 };
1618
1619 }  // namespace
1620
1621 // Verifies if a WindowTreeHost is deleted from dispatching a held mouse event
1622 // we don't crash.
1623 TEST_F(WindowEventDispatcherTest, DeleteHostFromHeldMouseEvent) {
1624   // Should be deleted by |delegate|.
1625   WindowTreeHost* h2 = WindowTreeHost::Create(gfx::Rect(0, 0, 100, 100));
1626   h2->InitHost();
1627   DeleteHostFromHeldMouseEventDelegate delegate(h2);
1628   // Owned by |h2|.
1629   Window* w1 = CreateNormalWindow(1, h2->window(), &delegate);
1630   w1->SetBounds(gfx::Rect(0, 0, 40, 40));
1631   ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED,
1632                          gfx::Point(10, 10), gfx::Point(10, 10),
1633                          ui::EF_SHIFT_DOWN, 0);
1634   h2->dispatcher()->RepostEvent(pressed);
1635   // RunAllPendingInMessageLoop() to make sure the |pressed| is run.
1636   RunAllPendingInMessageLoop();
1637   EXPECT_TRUE(delegate.got_mouse_event());
1638   EXPECT_TRUE(delegate.got_destroy());
1639 }
1640
1641 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveTouches) {
1642   EventFilterRecorder recorder;
1643   root_window()->AddPreTargetHandler(&recorder);
1644
1645   test::TestWindowDelegate delegate;
1646   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1647       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1648
1649   gfx::Point position1 = root_window()->bounds().origin();
1650   ui::TouchEvent press(
1651       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1652   DispatchEventUsingWindowDispatcher(&press);
1653
1654   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN",
1655             EventTypesToString(recorder.GetAndResetEvents()));
1656
1657   window->Hide();
1658
1659   EXPECT_EQ(ui::ET_TOUCH_CANCELLED, recorder.events()[0]);
1660   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_TAP_CANCEL));
1661   EXPECT_TRUE(recorder.HasReceivedEvent(ui::ET_GESTURE_END));
1662   EXPECT_EQ(3U, recorder.events().size());
1663   root_window()->RemovePreTargetHandler(&recorder);
1664 }
1665
1666 TEST_F(WindowEventDispatcherTest, WindowHideCancelsActiveGestures) {
1667   EventFilterRecorder recorder;
1668   root_window()->AddPreTargetHandler(&recorder);
1669
1670   test::TestWindowDelegate delegate;
1671   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1672       &delegate, 1, gfx::Rect(0, 0, 100, 100), root_window()));
1673
1674   gfx::Point position1 = root_window()->bounds().origin();
1675   gfx::Point position2 = root_window()->bounds().CenterPoint();
1676   ui::TouchEvent press(
1677       ui::ET_TOUCH_PRESSED, position1, 0, ui::EventTimeForNow());
1678   DispatchEventUsingWindowDispatcher(&press);
1679
1680   ui::TouchEvent move(
1681       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1682   DispatchEventUsingWindowDispatcher(&move);
1683
1684   ui::TouchEvent press2(
1685       ui::ET_TOUCH_PRESSED, position1, 1, ui::EventTimeForNow());
1686   DispatchEventUsingWindowDispatcher(&press2);
1687
1688   // TODO(tdresser): once the unified Gesture Recognizer has stuck, remove the
1689   // special casing here. See crbug.com/332418 for details.
1690   std::string expected =
1691       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1692       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1693       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_PINCH_BEGIN";
1694
1695   std::string expected_ugr =
1696       "TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1697       "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1698       "TOUCH_PRESSED GESTURE_BEGIN";
1699
1700   std::string events_string = EventTypesToString(recorder.GetAndResetEvents());
1701   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1702
1703   window->Hide();
1704
1705   expected =
1706       "TOUCH_CANCELLED GESTURE_PINCH_END GESTURE_END TOUCH_CANCELLED "
1707       "GESTURE_SCROLL_END GESTURE_END";
1708   expected_ugr =
1709       "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END GESTURE_END "
1710       "TOUCH_CANCELLED";
1711
1712   events_string = EventTypesToString(recorder.GetAndResetEvents());
1713   EXPECT_TRUE((expected == events_string) || (expected_ugr == events_string));
1714
1715   root_window()->RemovePreTargetHandler(&recorder);
1716 }
1717
1718 // Places two windows side by side. Presses down on one window, and starts a
1719 // scroll. Sets capture on the other window and ensures that the "ending" events
1720 // aren't sent to the window which gained capture.
1721 TEST_F(WindowEventDispatcherTest, EndingEventDoesntRetarget) {
1722   EventFilterRecorder recorder1;
1723   EventFilterRecorder recorder2;
1724   scoped_ptr<Window> window1(CreateNormalWindow(1, root_window(), NULL));
1725   window1->SetBounds(gfx::Rect(0, 0, 40, 40));
1726
1727   scoped_ptr<Window> window2(CreateNormalWindow(2, root_window(), NULL));
1728   window2->SetBounds(gfx::Rect(40, 0, 40, 40));
1729
1730   window1->AddPreTargetHandler(&recorder1);
1731   window2->AddPreTargetHandler(&recorder2);
1732
1733   gfx::Point position = window1->bounds().origin();
1734   ui::TouchEvent press(
1735       ui::ET_TOUCH_PRESSED, position, 0, ui::EventTimeForNow());
1736   DispatchEventUsingWindowDispatcher(&press);
1737
1738   gfx::Point position2 = window1->bounds().CenterPoint();
1739   ui::TouchEvent move(
1740       ui::ET_TOUCH_MOVED, position2, 0, ui::EventTimeForNow());
1741   DispatchEventUsingWindowDispatcher(&move);
1742
1743   window2->SetCapture();
1744
1745   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
1746             "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
1747             "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END",
1748             EventTypesToString(recorder1.events()));
1749
1750   EXPECT_TRUE(recorder2.events().empty());
1751 }
1752
1753 namespace {
1754
1755 // This class creates and manages a window which is destroyed as soon as
1756 // capture is lost. This is the case for the drag and drop capture window.
1757 class CaptureWindowTracker : public test::TestWindowDelegate {
1758  public:
1759   CaptureWindowTracker() {}
1760   virtual ~CaptureWindowTracker() {}
1761
1762   void CreateCaptureWindow(aura::Window* root_window) {
1763     capture_window_.reset(test::CreateTestWindowWithDelegate(
1764         this, -1234, gfx::Rect(20, 20, 20, 20), root_window));
1765     capture_window_->SetCapture();
1766   }
1767
1768   void reset() {
1769     capture_window_.reset();
1770   }
1771
1772   virtual void OnCaptureLost() OVERRIDE {
1773     capture_window_.reset();
1774   }
1775
1776   virtual void OnWindowDestroyed(Window* window) OVERRIDE {
1777     TestWindowDelegate::OnWindowDestroyed(window);
1778     capture_window_.reset();
1779   }
1780
1781   aura::Window* capture_window() { return capture_window_.get(); }
1782
1783  private:
1784   scoped_ptr<aura::Window> capture_window_;
1785
1786   DISALLOW_COPY_AND_ASSIGN(CaptureWindowTracker);
1787 };
1788
1789 }
1790
1791 // Verifies handling loss of capture by the capture window being hidden.
1792 TEST_F(WindowEventDispatcherTest, CaptureWindowHidden) {
1793   CaptureWindowTracker capture_window_tracker;
1794   capture_window_tracker.CreateCaptureWindow(root_window());
1795   capture_window_tracker.capture_window()->Hide();
1796   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1797 }
1798
1799 // Verifies handling loss of capture by the capture window being destroyed.
1800 TEST_F(WindowEventDispatcherTest, CaptureWindowDestroyed) {
1801   CaptureWindowTracker capture_window_tracker;
1802   capture_window_tracker.CreateCaptureWindow(root_window());
1803   capture_window_tracker.reset();
1804   EXPECT_EQ(NULL, capture_window_tracker.capture_window());
1805 }
1806
1807 class ExitMessageLoopOnMousePress : public ui::test::TestEventHandler {
1808  public:
1809   ExitMessageLoopOnMousePress() {}
1810   virtual ~ExitMessageLoopOnMousePress() {}
1811
1812  protected:
1813   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1814     ui::test::TestEventHandler::OnMouseEvent(event);
1815     if (event->type() == ui::ET_MOUSE_PRESSED)
1816       base::MessageLoopForUI::current()->Quit();
1817   }
1818
1819  private:
1820   DISALLOW_COPY_AND_ASSIGN(ExitMessageLoopOnMousePress);
1821 };
1822
1823 class WindowEventDispatcherTestWithMessageLoop
1824     : public WindowEventDispatcherTest {
1825  public:
1826   WindowEventDispatcherTestWithMessageLoop() {}
1827   virtual ~WindowEventDispatcherTestWithMessageLoop() {}
1828
1829   void RunTest() {
1830     // Reset any event the window may have received when bringing up the window
1831     // (e.g. mouse-move events if the mouse cursor is over the window).
1832     handler_.Reset();
1833
1834     // Start a nested message-loop, post an event to be dispatched, and then
1835     // terminate the message-loop. When the message-loop unwinds and gets back,
1836     // the reposted event should not have fired.
1837     scoped_ptr<ui::MouseEvent> mouse(new ui::MouseEvent(ui::ET_MOUSE_PRESSED,
1838                                                         gfx::Point(10, 10),
1839                                                         gfx::Point(10, 10),
1840                                                         ui::EF_NONE,
1841                                                         ui::EF_NONE));
1842     message_loop()->PostTask(
1843         FROM_HERE,
1844         base::Bind(&WindowEventDispatcherTestWithMessageLoop::RepostEventHelper,
1845                    host()->dispatcher(),
1846                    base::Passed(&mouse)));
1847     message_loop()->PostTask(FROM_HERE, message_loop()->QuitClosure());
1848
1849     base::MessageLoop::ScopedNestableTaskAllower allow(message_loop());
1850     base::RunLoop loop;
1851     loop.Run();
1852     EXPECT_EQ(0, handler_.num_mouse_events());
1853
1854     // Let the current message-loop run. The event-handler will terminate the
1855     // message-loop when it receives the reposted event.
1856   }
1857
1858   base::MessageLoop* message_loop() {
1859     return base::MessageLoopForUI::current();
1860   }
1861
1862  protected:
1863   virtual void SetUp() OVERRIDE {
1864     WindowEventDispatcherTest::SetUp();
1865     window_.reset(CreateNormalWindow(1, root_window(), NULL));
1866     window_->AddPreTargetHandler(&handler_);
1867   }
1868
1869   virtual void TearDown() OVERRIDE {
1870     window_.reset();
1871     WindowEventDispatcherTest::TearDown();
1872   }
1873
1874  private:
1875   // Used to avoid a copying |event| when binding to a closure.
1876   static void RepostEventHelper(WindowEventDispatcher* dispatcher,
1877                                 scoped_ptr<ui::MouseEvent> event) {
1878     dispatcher->RepostEvent(*event);
1879   }
1880
1881   scoped_ptr<Window> window_;
1882   ExitMessageLoopOnMousePress handler_;
1883
1884   DISALLOW_COPY_AND_ASSIGN(WindowEventDispatcherTestWithMessageLoop);
1885 };
1886
1887 TEST_F(WindowEventDispatcherTestWithMessageLoop, EventRepostedInNonNestedLoop) {
1888   CHECK(!message_loop()->is_running());
1889   // Perform the test in a callback, so that it runs after the message-loop
1890   // starts.
1891   message_loop()->PostTask(
1892       FROM_HERE, base::Bind(
1893           &WindowEventDispatcherTestWithMessageLoop::RunTest,
1894           base::Unretained(this)));
1895   message_loop()->Run();
1896 }
1897
1898 class WindowEventDispatcherTestInHighDPI : public WindowEventDispatcherTest {
1899  public:
1900   WindowEventDispatcherTestInHighDPI() {}
1901   virtual ~WindowEventDispatcherTestInHighDPI() {}
1902
1903  protected:
1904   virtual void SetUp() OVERRIDE {
1905     WindowEventDispatcherTest::SetUp();
1906     test_screen()->SetDeviceScaleFactor(2.f);
1907   }
1908 };
1909
1910 TEST_F(WindowEventDispatcherTestInHighDPI, EventLocationTransform) {
1911   test::TestWindowDelegate delegate;
1912   scoped_ptr<aura::Window> child(test::CreateTestWindowWithDelegate(&delegate,
1913       1234, gfx::Rect(20, 20, 100, 100), root_window()));
1914   child->Show();
1915
1916   ui::test::TestEventHandler handler_child;
1917   ui::test::TestEventHandler handler_root;
1918   root_window()->AddPreTargetHandler(&handler_root);
1919   child->AddPreTargetHandler(&handler_child);
1920
1921   {
1922     ui::MouseEvent move(ui::ET_MOUSE_MOVED,
1923                         gfx::Point(30, 30), gfx::Point(30, 30),
1924                         ui::EF_NONE, ui::EF_NONE);
1925     DispatchEventUsingWindowDispatcher(&move);
1926     EXPECT_EQ(0, handler_child.num_mouse_events());
1927     EXPECT_EQ(1, handler_root.num_mouse_events());
1928   }
1929
1930   {
1931     ui::MouseEvent move(ui::ET_MOUSE_MOVED,
1932                         gfx::Point(50, 50), gfx::Point(50, 50),
1933                         ui::EF_NONE, ui::EF_NONE);
1934     DispatchEventUsingWindowDispatcher(&move);
1935     // The child receives an ENTER, and a MOVED event.
1936     EXPECT_EQ(2, handler_child.num_mouse_events());
1937     // The root receives both the ENTER and the MOVED events dispatched to
1938     // |child|, as well as an EXIT event.
1939     EXPECT_EQ(3, handler_root.num_mouse_events());
1940   }
1941
1942   child->RemovePreTargetHandler(&handler_child);
1943   root_window()->RemovePreTargetHandler(&handler_root);
1944 }
1945
1946 TEST_F(WindowEventDispatcherTestInHighDPI, TouchMovesHeldOnScroll) {
1947   EventFilterRecorder recorder;
1948   root_window()->AddPreTargetHandler(&recorder);
1949   test::TestWindowDelegate delegate;
1950   HoldPointerOnScrollHandler handler(host()->dispatcher(), &recorder);
1951   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
1952       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
1953   window->AddPreTargetHandler(&handler);
1954
1955   test::EventGenerator generator(root_window());
1956   generator.GestureScrollSequence(
1957       gfx::Point(120, 120), gfx::Point(20, 120),
1958       base::TimeDelta::FromMilliseconds(100), 25);
1959
1960   // |handler| will have reset |filter| and started holding the touch-move
1961   // events when scrolling started. At the end of the scroll (i.e. upon
1962   // touch-release), the held touch-move event will have been dispatched first,
1963   // along with the subsequent events (i.e. touch-release, scroll-end, and
1964   // gesture-end).
1965   const EventFilterRecorder::Events& events = recorder.events();
1966   EXPECT_EQ(
1967       "TOUCH_MOVED GESTURE_SCROLL_UPDATE TOUCH_RELEASED "
1968       "GESTURE_SCROLL_END GESTURE_END",
1969       EventTypesToString(events));
1970   ASSERT_EQ(2u, recorder.touch_locations().size());
1971   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
1972             recorder.touch_locations()[0].ToString());
1973   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
1974             recorder.touch_locations()[1].ToString());
1975 }
1976
1977 class SelfDestructDelegate : public test::TestWindowDelegate {
1978  public:
1979   SelfDestructDelegate() {}
1980   virtual ~SelfDestructDelegate() {}
1981
1982   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE {
1983     window_.reset();
1984   }
1985
1986   void set_window(scoped_ptr<aura::Window> window) {
1987     window_ = window.Pass();
1988   }
1989   bool has_window() const { return !!window_.get(); }
1990
1991  private:
1992   scoped_ptr<aura::Window> window_;
1993   DISALLOW_COPY_AND_ASSIGN(SelfDestructDelegate);
1994 };
1995
1996 TEST_F(WindowEventDispatcherTest, SynthesizedLocatedEvent) {
1997   test::EventGenerator generator(root_window());
1998   generator.MoveMouseTo(10, 10);
1999   EXPECT_EQ("10,10",
2000             Env::GetInstance()->last_mouse_location().ToString());
2001
2002   // Synthesized event should not update the mouse location.
2003   ui::MouseEvent mouseev(ui::ET_MOUSE_MOVED, gfx::Point(), gfx::Point(),
2004                          ui::EF_IS_SYNTHESIZED, 0);
2005   generator.Dispatch(&mouseev);
2006   EXPECT_EQ("10,10",
2007             Env::GetInstance()->last_mouse_location().ToString());
2008
2009   generator.MoveMouseTo(0, 0);
2010   EXPECT_EQ("0,0",
2011             Env::GetInstance()->last_mouse_location().ToString());
2012
2013   // Make sure the location gets updated when a syntheiszed enter
2014   // event destroyed the window.
2015   SelfDestructDelegate delegate;
2016   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
2017       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
2018   delegate.set_window(window.Pass());
2019   EXPECT_TRUE(delegate.has_window());
2020
2021   generator.MoveMouseTo(100, 100);
2022   EXPECT_FALSE(delegate.has_window());
2023   EXPECT_EQ("100,100",
2024             Env::GetInstance()->last_mouse_location().ToString());
2025 }
2026
2027 class StaticFocusClient : public client::FocusClient {
2028  public:
2029   explicit StaticFocusClient(Window* focused)
2030       : focused_(focused) {}
2031   virtual ~StaticFocusClient() {}
2032
2033  private:
2034   // client::FocusClient:
2035   virtual void AddObserver(client::FocusChangeObserver* observer) OVERRIDE {}
2036   virtual void RemoveObserver(client::FocusChangeObserver* observer) OVERRIDE {}
2037   virtual void FocusWindow(Window* window) OVERRIDE {}
2038   virtual void ResetFocusWithinActiveWindow(Window* window) OVERRIDE {}
2039   virtual Window* GetFocusedWindow() OVERRIDE { return focused_; }
2040
2041   Window* focused_;
2042
2043   DISALLOW_COPY_AND_ASSIGN(StaticFocusClient);
2044 };
2045
2046 // Tests that host-cancel-mode event can be dispatched to a dispatcher safely
2047 // when the focused window does not live in the dispatcher's tree.
2048 TEST_F(WindowEventDispatcherTest, HostCancelModeWithFocusedWindowOutside) {
2049   test::TestWindowDelegate delegate;
2050   scoped_ptr<Window> focused(CreateTestWindowWithDelegate(&delegate, 123,
2051       gfx::Rect(20, 30, 100, 50), NULL));
2052   StaticFocusClient focus_client(focused.get());
2053   client::SetFocusClient(root_window(), &focus_client);
2054   EXPECT_FALSE(root_window()->Contains(focused.get()));
2055   EXPECT_EQ(focused.get(),
2056             client::GetFocusClient(root_window())->GetFocusedWindow());
2057   host()->dispatcher()->DispatchCancelModeEvent();
2058   EXPECT_EQ(focused.get(),
2059             client::GetFocusClient(root_window())->GetFocusedWindow());
2060 }
2061
2062 // Dispatches a mouse-move event to |target| when it receives a mouse-move
2063 // event.
2064 class DispatchEventHandler : public ui::EventHandler {
2065  public:
2066   explicit DispatchEventHandler(Window* target)
2067       : target_(target),
2068         dispatched_(false) {}
2069   virtual ~DispatchEventHandler() {}
2070
2071   bool dispatched() const { return dispatched_; }
2072  private:
2073   // ui::EventHandler:
2074   virtual void OnMouseEvent(ui::MouseEvent* mouse) OVERRIDE {
2075     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2076       ui::MouseEvent move(ui::ET_MOUSE_MOVED, target_->bounds().CenterPoint(),
2077           target_->bounds().CenterPoint(), ui::EF_NONE, ui::EF_NONE);
2078       ui::EventDispatchDetails details =
2079           target_->GetHost()->dispatcher()->OnEventFromSource(&move);
2080       ASSERT_FALSE(details.dispatcher_destroyed);
2081       EXPECT_FALSE(details.target_destroyed);
2082       EXPECT_EQ(target_, move.target());
2083       dispatched_ = true;
2084     }
2085     ui::EventHandler::OnMouseEvent(mouse);
2086   }
2087
2088   Window* target_;
2089   bool dispatched_;
2090
2091   DISALLOW_COPY_AND_ASSIGN(DispatchEventHandler);
2092 };
2093
2094 // Moves |window| to |root_window| when it receives a mouse-move event.
2095 class MoveWindowHandler : public ui::EventHandler {
2096  public:
2097   MoveWindowHandler(Window* window, Window* root_window)
2098       : window_to_move_(window),
2099         root_window_to_move_to_(root_window) {}
2100   virtual ~MoveWindowHandler() {}
2101
2102  private:
2103   // ui::EventHandler:
2104   virtual void OnMouseEvent(ui::MouseEvent* mouse) OVERRIDE {
2105     if (mouse->type() == ui::ET_MOUSE_MOVED) {
2106       root_window_to_move_to_->AddChild(window_to_move_);
2107     }
2108     ui::EventHandler::OnMouseEvent(mouse);
2109   }
2110
2111   Window* window_to_move_;
2112   Window* root_window_to_move_to_;
2113
2114   DISALLOW_COPY_AND_ASSIGN(MoveWindowHandler);
2115 };
2116
2117 // Tests that nested event dispatch works correctly if the target of the older
2118 // event being dispatched is moved to a different dispatcher in response to an
2119 // event in the inner loop.
2120 TEST_F(WindowEventDispatcherTest, NestedEventDispatchTargetMoved) {
2121   scoped_ptr<WindowTreeHost> second_host(
2122       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2123   second_host->InitHost();
2124   Window* second_root = second_host->window();
2125
2126   // Create two windows parented to |root_window()|.
2127   test::TestWindowDelegate delegate;
2128   scoped_ptr<Window> first(CreateTestWindowWithDelegate(&delegate, 123,
2129       gfx::Rect(20, 10, 10, 20), root_window()));
2130   scoped_ptr<Window> second(CreateTestWindowWithDelegate(&delegate, 234,
2131       gfx::Rect(40, 10, 50, 20), root_window()));
2132
2133   // Setup a handler on |first| so that it dispatches an event to |second| when
2134   // |first| receives an event.
2135   DispatchEventHandler dispatch_event(second.get());
2136   first->AddPreTargetHandler(&dispatch_event);
2137
2138   // Setup a handler on |second| so that it moves |first| into |second_root|
2139   // when |second| receives an event.
2140   MoveWindowHandler move_window(first.get(), second_root);
2141   second->AddPreTargetHandler(&move_window);
2142
2143   // Some sanity checks: |first| is inside |root_window()|'s tree.
2144   EXPECT_EQ(root_window(), first->GetRootWindow());
2145   // The two root windows are different.
2146   EXPECT_NE(root_window(), second_root);
2147
2148   // Dispatch an event to |first|.
2149   ui::MouseEvent move(ui::ET_MOUSE_MOVED, first->bounds().CenterPoint(),
2150                       first->bounds().CenterPoint(), ui::EF_NONE, ui::EF_NONE);
2151   ui::EventDispatchDetails details =
2152       host()->dispatcher()->OnEventFromSource(&move);
2153   ASSERT_FALSE(details.dispatcher_destroyed);
2154   EXPECT_TRUE(details.target_destroyed);
2155   EXPECT_EQ(first.get(), move.target());
2156   EXPECT_TRUE(dispatch_event.dispatched());
2157   EXPECT_EQ(second_root, first->GetRootWindow());
2158
2159   first->RemovePreTargetHandler(&dispatch_event);
2160   second->RemovePreTargetHandler(&move_window);
2161 }
2162
2163 class AlwaysMouseDownInputStateLookup : public InputStateLookup {
2164  public:
2165   AlwaysMouseDownInputStateLookup() {}
2166   virtual ~AlwaysMouseDownInputStateLookup() {}
2167
2168  private:
2169   // InputStateLookup:
2170   virtual bool IsMouseButtonDown() const OVERRIDE { return true; }
2171
2172   DISALLOW_COPY_AND_ASSIGN(AlwaysMouseDownInputStateLookup);
2173 };
2174
2175 TEST_F(WindowEventDispatcherTest,
2176        CursorVisibilityChangedWhileCaptureWindowInAnotherDispatcher) {
2177   test::EventCountDelegate delegate;
2178   scoped_ptr<Window> window(CreateTestWindowWithDelegate(&delegate, 123,
2179       gfx::Rect(20, 10, 10, 20), root_window()));
2180   window->Show();
2181
2182   scoped_ptr<WindowTreeHost> second_host(
2183       WindowTreeHost::Create(gfx::Rect(20, 30, 100, 50)));
2184   second_host->InitHost();
2185   WindowEventDispatcher* second_dispatcher = second_host->dispatcher();
2186
2187   // Install an InputStateLookup on the Env that always claims that a
2188   // mouse-button is down.
2189   test::EnvTestHelper(Env::GetInstance()).SetInputStateLookup(
2190       scoped_ptr<InputStateLookup>(new AlwaysMouseDownInputStateLookup()));
2191
2192   window->SetCapture();
2193
2194   // Because the mouse button is down, setting the capture on |window| will set
2195   // it as the mouse-move handler for |root_window()|.
2196   EXPECT_EQ(window.get(), host()->dispatcher()->mouse_moved_handler());
2197
2198   // This does not set |window| as the mouse-move handler for the second
2199   // dispatcher.
2200   EXPECT_EQ(NULL, second_dispatcher->mouse_moved_handler());
2201
2202   // However, some capture-client updates the capture in each root-window on a
2203   // capture. Emulate that here. Because of this, the second dispatcher also has
2204   // |window| as the mouse-move handler.
2205   client::CaptureDelegate* second_capture_delegate = second_dispatcher;
2206   second_capture_delegate->UpdateCapture(NULL, window.get());
2207   EXPECT_EQ(window.get(), second_dispatcher->mouse_moved_handler());
2208
2209   // Reset the mouse-event counts for |window|.
2210   delegate.GetMouseMotionCountsAndReset();
2211
2212   // Notify both hosts that the cursor is now hidden. This should send a single
2213   // mouse-exit event to |window|.
2214   host()->OnCursorVisibilityChanged(false);
2215   second_host->OnCursorVisibilityChanged(false);
2216   EXPECT_EQ("0 0 1", delegate.GetMouseMotionCountsAndReset());
2217 }
2218
2219 }  // namespace aura