// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/aura/window.h"

#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/stringprintf.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/desktop.h"
#include "ui/aura/desktop_observer.h"
#include "ui/aura/event.h"
#include "ui/aura/focus_manager.h"
#include "ui/aura/hit_test.h"
#include "ui/aura/root_window.h"
#include "ui/aura/test/aura_test_base.h"
#include "ui/aura/test/event_generator.h"
#include "ui/aura/test/test_desktop_delegate.h"
#include "ui/aura/test/test_window_delegate.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_observer.h"
#include "ui/gfx/canvas_skia.h"
#include "ui/gfx/compositor/layer.h"
#include "ui/base/keycodes/keyboard_codes.h"

namespace aura {
namespace test {

namespace {

// Used for verifying destruction methods are invoked.
class DestroyTrackingDelegateImpl : public TestWindowDelegate {
 public:
  DestroyTrackingDelegateImpl()
      : destroying_count_(0),
        destroyed_count_(0),
        in_destroying_(false) {}

  void clear_destroying_count() { destroying_count_ = 0; }
  int destroying_count() const { return destroying_count_; }

  void clear_destroyed_count() { destroyed_count_ = 0; }
  int destroyed_count() const { return destroyed_count_; }

  bool in_destroying() const { return in_destroying_; }

  virtual void OnWindowDestroying() OVERRIDE {
    EXPECT_FALSE(in_destroying_);
    in_destroying_ = true;
    destroying_count_++;
  }

  virtual void OnWindowDestroyed() OVERRIDE {
    EXPECT_TRUE(in_destroying_);
    in_destroying_ = false;
    destroyed_count_++;
  }

 private:
  int destroying_count_;
  int destroyed_count_;
  bool in_destroying_;

  DISALLOW_COPY_AND_ASSIGN(DestroyTrackingDelegateImpl);
};

// Used to verify that when OnWindowDestroying is invoked the parent is also
// is in the process of being destroyed.
class ChildWindowDelegateImpl : public DestroyTrackingDelegateImpl {
 public:
  explicit ChildWindowDelegateImpl(
      DestroyTrackingDelegateImpl* parent_delegate)
      : parent_delegate_(parent_delegate) {
  }

  virtual void OnWindowDestroying() OVERRIDE {
    EXPECT_TRUE(parent_delegate_->in_destroying());
    DestroyTrackingDelegateImpl::OnWindowDestroying();
  }

 private:
  DestroyTrackingDelegateImpl* parent_delegate_;

  DISALLOW_COPY_AND_ASSIGN(ChildWindowDelegateImpl);
};

// Used in verifying mouse capture.
class CaptureWindowDelegateImpl : public TestWindowDelegate {
 public:
  explicit CaptureWindowDelegateImpl()
      : capture_lost_count_(0),
        mouse_event_count_(0),
        touch_event_count_(0) {
  }

  int capture_lost_count() const { return capture_lost_count_; }
  void set_capture_lost_count(int value) { capture_lost_count_ = value; }
  int mouse_event_count() const { return mouse_event_count_; }
  void set_mouse_event_count(int value) { mouse_event_count_ = value; }
  int touch_event_count() const { return touch_event_count_; }
  void set_touch_event_count(int value) { touch_event_count_ = value; }

  virtual bool OnMouseEvent(MouseEvent* event) OVERRIDE {
    mouse_event_count_++;
    return false;
  }
  virtual ui::TouchStatus OnTouchEvent(TouchEvent* event) OVERRIDE {
    touch_event_count_++;
    return ui::TOUCH_STATUS_UNKNOWN;
  }
  virtual void OnCaptureLost() OVERRIDE {
    capture_lost_count_++;
  }

 private:
  int capture_lost_count_;
  int mouse_event_count_;
  int touch_event_count_;

  DISALLOW_COPY_AND_ASSIGN(CaptureWindowDelegateImpl);
};

// A simple WindowDelegate implementation for these tests. It owns itself
// (deletes itself when the Window it is attached to is destroyed).
class ColorTestWindowDelegate : public TestWindowDelegate {
 public:
  ColorTestWindowDelegate(SkColor color)
      : color_(color),
        last_key_code_(ui::VKEY_UNKNOWN) {
  }
  virtual ~ColorTestWindowDelegate() {}

  ui::KeyboardCode last_key_code() const { return last_key_code_; }

  // Overridden from TestWindowDelegate:
  virtual bool OnKeyEvent(KeyEvent* event) OVERRIDE {
    last_key_code_ = event->key_code();
    return true;
  }
  virtual void OnWindowDestroyed() OVERRIDE {
    delete this;
  }
  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
    canvas->GetSkCanvas()->drawColor(color_, SkXfermode::kSrc_Mode);
  }

 private:
  SkColor color_;
  ui::KeyboardCode last_key_code_;

  DISALLOW_COPY_AND_ASSIGN(ColorTestWindowDelegate);
};

class WindowTest : public AuraTestBase {
 public:
  WindowTest() {}
  virtual ~WindowTest() {}

  Window* CreateTestWindowWithId(int id, Window* parent) {
    return CreateTestWindowWithDelegate(NULL, id, gfx::Rect(), parent);
  }

  Window* CreateTestWindow(SkColor color,
                           int id,
                           const gfx::Rect& bounds,
                           Window* parent) {
    return CreateTestWindowWithDelegate(new ColorTestWindowDelegate(color),
                                        id, bounds, parent);
  }

  Window* CreateTestWindowWithDelegate(WindowDelegate* delegate,
                                       int id,
                                       const gfx::Rect& bounds,
                                       Window* parent) {
    Window* window = new Window(delegate);
    window->set_id(id);
    window->Init();
    window->SetBounds(bounds);
    window->Show();
    window->SetParent(parent);
    return window;
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(WindowTest);
};

}  // namespace

TEST_F(WindowTest, GetChildById) {
  scoped_ptr<Window> w1(CreateTestWindowWithId(1, NULL));
  scoped_ptr<Window> w11(CreateTestWindowWithId(11, w1.get()));
  scoped_ptr<Window> w111(CreateTestWindowWithId(111, w11.get()));
  scoped_ptr<Window> w12(CreateTestWindowWithId(12, w1.get()));

  EXPECT_EQ(NULL, w1->GetChildById(57));
  EXPECT_EQ(w12.get(), w1->GetChildById(12));
  EXPECT_EQ(w111.get(), w1->GetChildById(111));
}

TEST_F(WindowTest, HitTest) {
  Window w1(new ColorTestWindowDelegate(SK_ColorWHITE));
  w1.set_id(1);
  w1.Init();
  w1.SetBounds(gfx::Rect(10, 10, 50, 50));
  w1.Show();
  w1.SetParent(NULL);

  // Points are in the Window's coordinates.
  EXPECT_TRUE(w1.HitTest(gfx::Point(1, 1)));
  EXPECT_FALSE(w1.HitTest(gfx::Point(-1, -1)));

  // TODO(beng): clip Window to parent.
}

TEST_F(WindowTest, GetEventHandlerForPoint) {
  scoped_ptr<Window> w1(
      CreateTestWindow(SK_ColorWHITE, 1, gfx::Rect(10, 10, 500, 500), NULL));
  scoped_ptr<Window> w11(
      CreateTestWindow(SK_ColorGREEN, 11, gfx::Rect(5, 5, 100, 100), w1.get()));
  scoped_ptr<Window> w111(
      CreateTestWindow(SK_ColorCYAN, 111, gfx::Rect(5, 5, 75, 75), w11.get()));
  scoped_ptr<Window> w1111(
      CreateTestWindow(SK_ColorRED, 1111, gfx::Rect(5, 5, 50, 50), w111.get()));
  scoped_ptr<Window> w12(
      CreateTestWindow(SK_ColorMAGENTA, 12, gfx::Rect(10, 420, 25, 25),
                       w1.get()));
  scoped_ptr<Window> w121(
      CreateTestWindow(SK_ColorYELLOW, 121, gfx::Rect(5, 5, 5, 5), w12.get()));
  scoped_ptr<Window> w13(
      CreateTestWindow(SK_ColorGRAY, 13, gfx::Rect(5, 470, 50, 50), w1.get()));

  Window* root = Desktop::GetInstance()->window();
  w1->parent()->SetBounds(gfx::Rect(500, 500));
  EXPECT_EQ(NULL, root->GetEventHandlerForPoint(gfx::Point(5, 5)));
  EXPECT_EQ(w1.get(), root->GetEventHandlerForPoint(gfx::Point(11, 11)));
  EXPECT_EQ(w11.get(), root->GetEventHandlerForPoint(gfx::Point(16, 16)));
  EXPECT_EQ(w111.get(), root->GetEventHandlerForPoint(gfx::Point(21, 21)));
  EXPECT_EQ(w1111.get(), root->GetEventHandlerForPoint(gfx::Point(26, 26)));
  EXPECT_EQ(w12.get(), root->GetEventHandlerForPoint(gfx::Point(21, 431)));
  EXPECT_EQ(w121.get(), root->GetEventHandlerForPoint(gfx::Point(26, 436)));
  EXPECT_EQ(w13.get(), root->GetEventHandlerForPoint(gfx::Point(26, 481)));
}

TEST_F(WindowTest, GetTopWindowContainingPoint) {
  Window* root = Desktop::GetInstance()->window();
  root->SetBounds(gfx::Rect(0, 0, 300, 300));

  scoped_ptr<Window> w1(
      CreateTestWindow(SK_ColorWHITE, 1, gfx::Rect(10, 10, 100, 100), NULL));
  scoped_ptr<Window> w11(
      CreateTestWindow(SK_ColorGREEN, 11, gfx::Rect(0, 0, 120, 120), w1.get()));

  scoped_ptr<Window> w2(
      CreateTestWindow(SK_ColorRED, 2, gfx::Rect(5, 5, 55, 55), NULL));

  scoped_ptr<Window> w3(
      CreateTestWindowWithDelegate(
          NULL, 3, gfx::Rect(200, 200, 100, 100), NULL));
  scoped_ptr<Window> w31(
      CreateTestWindow(SK_ColorCYAN, 31, gfx::Rect(0, 0, 50, 50), w3.get()));
  scoped_ptr<Window> w311(
      CreateTestWindow(SK_ColorBLUE, 311, gfx::Rect(0, 0, 10, 10), w31.get()));

  // The stop-event-propagation flag shouldn't have any effect on the behavior
  // of this method.
  w3->set_stops_event_propagation(true);

  EXPECT_EQ(NULL, root->GetTopWindowContainingPoint(gfx::Point(0, 0)));
  EXPECT_EQ(w2.get(), root->GetTopWindowContainingPoint(gfx::Point(5, 5)));
  EXPECT_EQ(w2.get(), root->GetTopWindowContainingPoint(gfx::Point(10, 10)));
  EXPECT_EQ(w2.get(), root->GetTopWindowContainingPoint(gfx::Point(59, 59)));
  EXPECT_EQ(w1.get(), root->GetTopWindowContainingPoint(gfx::Point(60, 60)));
  EXPECT_EQ(w1.get(), root->GetTopWindowContainingPoint(gfx::Point(109, 109)));
  EXPECT_EQ(NULL, root->GetTopWindowContainingPoint(gfx::Point(110, 110)));
  EXPECT_EQ(w31.get(), root->GetTopWindowContainingPoint(gfx::Point(200, 200)));
  EXPECT_EQ(w31.get(), root->GetTopWindowContainingPoint(gfx::Point(220, 220)));
  EXPECT_EQ(NULL, root->GetTopWindowContainingPoint(gfx::Point(260, 260)));
}

TEST_F(WindowTest, Focus) {
  Desktop* desktop = Desktop::GetInstance();
  desktop->window()->SetBounds(gfx::Rect(0, 0, 510, 510));

  scoped_ptr<Window> w1(
      CreateTestWindow(SK_ColorWHITE, 1, gfx::Rect(10, 10, 500, 500), NULL));
  scoped_ptr<Window> w11(
      CreateTestWindow(SK_ColorGREEN, 11, gfx::Rect(5, 5, 100, 100), w1.get()));
  scoped_ptr<Window> w111(
      CreateTestWindow(SK_ColorCYAN, 111, gfx::Rect(5, 5, 75, 75), w11.get()));
  scoped_ptr<Window> w1111(
      CreateTestWindow(SK_ColorRED, 1111, gfx::Rect(5, 5, 50, 50), w111.get()));
  scoped_ptr<Window> w12(
      CreateTestWindow(SK_ColorMAGENTA, 12, gfx::Rect(10, 420, 25, 25),
                       w1.get()));
  ColorTestWindowDelegate* w121delegate =
      new ColorTestWindowDelegate(SK_ColorYELLOW);
  scoped_ptr<Window> w121(
      CreateTestWindowWithDelegate(w121delegate, 121, gfx::Rect(5, 5, 5, 5),
                                   w12.get()));
  ColorTestWindowDelegate* w122delegate =
      new ColorTestWindowDelegate(SK_ColorRED);
  scoped_ptr<Window> w122(
      CreateTestWindowWithDelegate(w122delegate, 121, gfx::Rect(10, 5, 5, 5),
                                   w12.get()));
  scoped_ptr<Window> w13(
      CreateTestWindow(SK_ColorGRAY, 13, gfx::Rect(5, 470, 50, 50), w1.get()));

  // Click on a sub-window (w121) to focus it.
  gfx::Point click_point = w121->bounds().CenterPoint();
  Window::ConvertPointToWindow(w121->parent(), desktop->window(), &click_point);
  desktop->OnMouseEvent(
      MouseEvent(ui::ET_MOUSE_PRESSED, click_point, ui::EF_LEFT_BUTTON_DOWN));
  internal::FocusManager* focus_manager = w121->GetFocusManager();
  EXPECT_EQ(w121.get(), focus_manager->GetFocusedWindow());

  // The key press should be sent to the focused sub-window.
  desktop->OnKeyEvent(KeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_E, 0));
  EXPECT_EQ(ui::VKEY_E, w121delegate->last_key_code());

  // Touch on a sub-window (w122) to focus it.
  click_point = w122->bounds().CenterPoint();
  Window::ConvertPointToWindow(w122->parent(), desktop->window(), &click_point);
  desktop->OnTouchEvent(TouchEvent(ui::ET_TOUCH_PRESSED, click_point, 0));
  focus_manager = w122->GetFocusManager();
  EXPECT_EQ(w122.get(), focus_manager->GetFocusedWindow());

  // The key press should be sent to the focused sub-window.
  desktop->OnKeyEvent(KeyEvent(ui::ET_KEY_PRESSED, ui::VKEY_F, 0));
  EXPECT_EQ(ui::VKEY_F, w122delegate->last_key_code());
}

// Various destruction assertions.
TEST_F(WindowTest, DestroyTest) {
  DestroyTrackingDelegateImpl parent_delegate;
  ChildWindowDelegateImpl child_delegate(&parent_delegate);
  {
    scoped_ptr<Window> parent(
        CreateTestWindowWithDelegate(&parent_delegate, 0, gfx::Rect(), NULL));
    CreateTestWindowWithDelegate(&child_delegate, 0, gfx::Rect(), parent.get());
  }
  // Both the parent and child should have been destroyed.
  EXPECT_EQ(1, parent_delegate.destroying_count());
  EXPECT_EQ(1, parent_delegate.destroyed_count());
  EXPECT_EQ(1, child_delegate.destroying_count());
  EXPECT_EQ(1, child_delegate.destroyed_count());
}

// Make sure MoveChildToFront moves both the window and layer to the front.
TEST_F(WindowTest, MoveChildToFront) {
  Window parent(NULL);
  parent.Init();
  Window child1(NULL);
  child1.Init();
  Window child2(NULL);
  child2.Init();

  child1.SetParent(&parent);
  child2.SetParent(&parent);
  ASSERT_EQ(2u, parent.children().size());
  EXPECT_EQ(&child1, parent.children()[0]);
  EXPECT_EQ(&child2, parent.children()[1]);
  ASSERT_EQ(2u, parent.layer()->children().size());
  EXPECT_EQ(child1.layer(), parent.layer()->children()[0]);
  EXPECT_EQ(child2.layer(), parent.layer()->children()[1]);

  parent.MoveChildToFront(&child1);
  ASSERT_EQ(2u, parent.children().size());
  EXPECT_EQ(&child1, parent.children()[1]);
  EXPECT_EQ(&child2, parent.children()[0]);
  ASSERT_EQ(2u, parent.layer()->children().size());
  EXPECT_EQ(child1.layer(), parent.layer()->children()[1]);
  EXPECT_EQ(child2.layer(), parent.layer()->children()[0]);
}

// Various destruction assertions.
TEST_F(WindowTest, CaptureTests) {
  aura::Desktop* desktop = aura::Desktop::GetInstance();
  CaptureWindowDelegateImpl delegate;
  scoped_ptr<Window> window(CreateTestWindowWithDelegate(
      &delegate, 0, gfx::Rect(0, 0, 20, 20), NULL));
  EXPECT_FALSE(window->HasCapture());

  // Do a capture.
  window->SetCapture();
  EXPECT_TRUE(window->HasCapture());
  EXPECT_EQ(0, delegate.capture_lost_count());
  EventGenerator generator(gfx::Point(50, 50));
  generator.PressLeftButton();
  EXPECT_EQ(1, delegate.mouse_event_count());
  generator.ReleaseLeftButton();

  EXPECT_EQ(2, delegate.mouse_event_count());
  delegate.set_mouse_event_count(0);

  desktop->OnTouchEvent(TouchEvent(ui::ET_TOUCH_PRESSED, gfx::Point(50, 50),
                                   0));
  EXPECT_EQ(1, delegate.touch_event_count());
  delegate.set_touch_event_count(0);

  window->ReleaseCapture();
  EXPECT_FALSE(window->HasCapture());
  EXPECT_EQ(1, delegate.capture_lost_count());

  generator.PressLeftButton();
  EXPECT_EQ(0, delegate.mouse_event_count());

  desktop->OnTouchEvent(TouchEvent(ui::ET_TOUCH_PRESSED, gfx::Point(50, 50),
                                   0));
  EXPECT_EQ(0, delegate.touch_event_count());
}

// Verifies capture is reset when a window is destroyed.
TEST_F(WindowTest, ReleaseCaptureOnDestroy) {
  Desktop* desktop = Desktop::GetInstance();
  internal::RootWindow* root =
      static_cast<internal::RootWindow*>(desktop->window());
  CaptureWindowDelegateImpl delegate;
  scoped_ptr<Window> window(CreateTestWindowWithDelegate(
      &delegate, 0, gfx::Rect(0, 0, 20, 20), NULL));
  EXPECT_FALSE(window->HasCapture());

  // Do a capture.
  window->SetCapture();
  EXPECT_TRUE(window->HasCapture());

  // Destroy the window.
  window.reset();

  // Make sure the root doesn't reference the window anymore.
  EXPECT_EQ(NULL, root->mouse_pressed_handler());
  EXPECT_EQ(NULL, root->capture_window());
}

class MouseEnterExitWindowDelegate : public TestWindowDelegate {
 public:
  MouseEnterExitWindowDelegate() : entered_(false), exited_(false) {}

  virtual bool OnMouseEvent(MouseEvent* event) OVERRIDE {
    switch (event->type()) {
      case ui::ET_MOUSE_ENTERED:
        entered_ = true;
        break;
      case ui::ET_MOUSE_EXITED:
        exited_ = true;
        break;
      default:
        break;
    }
    return false;
  }

  bool entered() const { return entered_; }
  bool exited() const { return exited_; }

 private:
  bool entered_;
  bool exited_;

  DISALLOW_COPY_AND_ASSIGN(MouseEnterExitWindowDelegate);
};


// Verifies that the WindowDelegate receives MouseExit and MouseEnter events for
// mouse transitions from window to window.
TEST_F(WindowTest, MouseEnterExit) {
  Desktop* desktop = Desktop::GetInstance();

  MouseEnterExitWindowDelegate d1;
  scoped_ptr<Window> w1(
      CreateTestWindowWithDelegate(&d1, 1, gfx::Rect(10, 10, 50, 50), NULL));
  MouseEnterExitWindowDelegate d2;
  scoped_ptr<Window> w2(
      CreateTestWindowWithDelegate(&d2, 2, gfx::Rect(70, 70, 50, 50), NULL));

  gfx::Point move_point = w1->bounds().CenterPoint();
  Window::ConvertPointToWindow(w1->parent(), desktop->window(), &move_point);
  desktop->OnMouseEvent(MouseEvent(ui::ET_MOUSE_MOVED, move_point, 0));

  EXPECT_TRUE(d1.entered());
  EXPECT_FALSE(d1.exited());
  EXPECT_FALSE(d2.entered());
  EXPECT_FALSE(d2.exited());

  move_point = w2->bounds().CenterPoint();
  Window::ConvertPointToWindow(w2->parent(), desktop->window(), &move_point);
  desktop->OnMouseEvent(MouseEvent(ui::ET_MOUSE_MOVED, move_point, 0));

  EXPECT_TRUE(d1.entered());
  EXPECT_TRUE(d1.exited());
  EXPECT_TRUE(d2.entered());
  EXPECT_FALSE(d2.exited());
}

class ActivateWindowDelegate : public TestWindowDelegate {
 public:
  ActivateWindowDelegate()
      : activate_(true),
        activated_count_(0),
        lost_active_count_(0),
        should_activate_count_(0) {
  }

  ActivateWindowDelegate(bool activate)
      : activate_(activate),
        activated_count_(0),
        lost_active_count_(0),
        should_activate_count_(0) {
  }

  void set_activate(bool v) { activate_ = v; }
  int activated_count() const { return activated_count_; }
  int lost_active_count() const { return lost_active_count_; }
  int should_activate_count() const { return should_activate_count_; }
  void Clear() {
    activated_count_ = lost_active_count_ = should_activate_count_ = 0;
  }

  virtual bool ShouldActivate(Event* event) OVERRIDE {
    should_activate_count_++;
    return activate_;
  }
  virtual void OnActivated() OVERRIDE {
    activated_count_++;
  }
  virtual void OnLostActive() OVERRIDE {
    lost_active_count_++;
  }

 private:
  bool activate_;
  int activated_count_;
  int lost_active_count_;
  int should_activate_count_;

  DISALLOW_COPY_AND_ASSIGN(ActivateWindowDelegate);
};

// Various assertion testing for activating windows.
TEST_F(WindowTest, ActivateOnMouse) {
  Desktop* desktop = Desktop::GetInstance();

  ActivateWindowDelegate d1;
  scoped_ptr<Window> w1(
      CreateTestWindowWithDelegate(&d1, 1, gfx::Rect(10, 10, 50, 50), NULL));
  ActivateWindowDelegate d2;
  scoped_ptr<Window> w2(
      CreateTestWindowWithDelegate(&d2, 2, gfx::Rect(70, 70, 50, 50), NULL));
  internal::FocusManager* focus_manager = w1->GetFocusManager();

  d1.Clear();
  d2.Clear();

  // Activate window1.
  desktop->SetActiveWindow(w1.get(), NULL);
  EXPECT_EQ(w1.get(), desktop->active_window());
  EXPECT_EQ(w1.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(1, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
  d1.Clear();

  // Click on window2.
  gfx::Point press_point = w2->bounds().CenterPoint();
  Window::ConvertPointToWindow(w2->parent(), desktop->window(), &press_point);
  EventGenerator generator(press_point);
  generator.ClickLeftButton();

  // Window2 should have become active.
  EXPECT_EQ(w2.get(), desktop->active_window());
  EXPECT_EQ(w2.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(0, d1.activated_count());
  EXPECT_EQ(1, d1.lost_active_count());
  EXPECT_EQ(1, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  d1.Clear();
  d2.Clear();

  // Click back on window1, but set it up so w1 doesn't activate on click.
  press_point = w1->bounds().CenterPoint();
  Window::ConvertPointToWindow(w1->parent(), desktop->window(), &press_point);
  d1.set_activate(false);
  generator.ClickLeftButton();

  // Window2 should still be active and focused.
  EXPECT_EQ(w2.get(), desktop->active_window());
  EXPECT_EQ(w2.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(0, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
  EXPECT_EQ(0, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  d1.Clear();
  d2.Clear();

  // Destroy window2, this should make window1 active.
  d1.set_activate(true);
  w2.reset();
  EXPECT_EQ(0, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  EXPECT_EQ(w1.get(), desktop->active_window());
  EXPECT_EQ(w1.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(1, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
}

// Essentially the same as ActivateOnMouse, but for touch events.
TEST_F(WindowTest, ActivateOnTouch) {
  Desktop* desktop = Desktop::GetInstance();

  ActivateWindowDelegate d1;
  scoped_ptr<Window> w1(
      CreateTestWindowWithDelegate(&d1, 1, gfx::Rect(10, 10, 50, 50), NULL));
  ActivateWindowDelegate d2;
  scoped_ptr<Window> w2(
      CreateTestWindowWithDelegate(&d2, 2, gfx::Rect(70, 70, 50, 50), NULL));
  internal::FocusManager* focus_manager = w1->GetFocusManager();

  d1.Clear();
  d2.Clear();

  // Activate window1.
  desktop->SetActiveWindow(w1.get(), NULL);
  EXPECT_EQ(w1.get(), desktop->active_window());
  EXPECT_EQ(w1.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(1, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
  d1.Clear();

  // Touch window2.
  gfx::Point press_point = w2->bounds().CenterPoint();
  Window::ConvertPointToWindow(w2->parent(), desktop->window(), &press_point);
  desktop->OnTouchEvent(TouchEvent(ui::ET_TOUCH_PRESSED, press_point, 0));

  // Window2 should have become active.
  EXPECT_EQ(w2.get(), desktop->active_window());
  EXPECT_EQ(w2.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(0, d1.activated_count());
  EXPECT_EQ(1, d1.lost_active_count());
  EXPECT_EQ(1, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  d1.Clear();
  d2.Clear();

  // Touch window1, but set it up so w1 doesn't activate on touch.
  press_point = w1->bounds().CenterPoint();
  Window::ConvertPointToWindow(w1->parent(), desktop->window(), &press_point);
  d1.set_activate(false);
  desktop->OnTouchEvent(TouchEvent(ui::ET_TOUCH_PRESSED, press_point, 0));

  // Window2 should still be active and focused.
  EXPECT_EQ(w2.get(), desktop->active_window());
  EXPECT_EQ(w2.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(0, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
  EXPECT_EQ(0, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  d1.Clear();
  d2.Clear();

  // Destroy window2, this should make window1 active.
  d1.set_activate(true);
  w2.reset();
  EXPECT_EQ(0, d2.activated_count());
  EXPECT_EQ(0, d2.lost_active_count());
  EXPECT_EQ(w1.get(), desktop->active_window());
  EXPECT_EQ(w1.get(), focus_manager->GetFocusedWindow());
  EXPECT_EQ(1, d1.activated_count());
  EXPECT_EQ(0, d1.lost_active_count());
}

// Creates a window with a delegate (w111) that can handle events at a lower
// z-index than a window without a delegate (w12). w12 is sized to fill the
// entire bounds of the container. This test verifies that
// GetEventHandlerForPoint() skips w12 even though its bounds contain the event,
// because it has no children that can handle the event and it has no delegate
// allowing it to handle the event itself.
TEST_F(WindowTest, GetEventHandlerForPoint_NoDelegate) {
  TestWindowDelegate d111;
  scoped_ptr<Window> w1(CreateTestWindowWithDelegate(NULL, 1,
      gfx::Rect(0, 0, 500, 500), NULL));
  scoped_ptr<Window> w11(CreateTestWindowWithDelegate(NULL, 11,
      gfx::Rect(0, 0, 500, 500), w1.get()));
  scoped_ptr<Window> w111(CreateTestWindowWithDelegate(&d111, 111,
      gfx::Rect(50, 50, 450, 450), w11.get()));
  scoped_ptr<Window> w12(CreateTestWindowWithDelegate(NULL, 12,
      gfx::Rect(0, 0, 500, 500), w1.get()));

  gfx::Point target_point = w111->bounds().CenterPoint();
  EXPECT_EQ(w111.get(), w1->GetEventHandlerForPoint(target_point));
}

class VisibilityWindowDelegate : public TestWindowDelegate {
 public:
  VisibilityWindowDelegate()
      : shown_(0),
        hidden_(0) {
  }

  int shown() const { return shown_; }
  int hidden() const { return hidden_; }
  void Clear() {
    shown_ = 0;
    hidden_ = 0;
  }

  virtual void OnWindowVisibilityChanged(bool visible) OVERRIDE {
    if (visible)
      shown_++;
    else
      hidden_++;
  }

 private:
  int shown_;
  int hidden_;

  DISALLOW_COPY_AND_ASSIGN(VisibilityWindowDelegate);
};

// Verifies show/hide propagate correctly to children and the layer.
TEST_F(WindowTest, Visibility) {
  VisibilityWindowDelegate d;
  scoped_ptr<Window> w1(CreateTestWindowWithDelegate(&d, 1, gfx::Rect(), NULL));
  scoped_ptr<Window> w2(CreateTestWindowWithId(2, w1.get()));
  scoped_ptr<Window> w3(CreateTestWindowWithId(3, w2.get()));

  // Create shows all the windows.
  EXPECT_TRUE(w1->IsVisible());
  EXPECT_TRUE(w2->IsVisible());
  EXPECT_TRUE(w3->IsVisible());
  EXPECT_EQ(1, d.shown());

  d.Clear();
  w1->Hide();
  EXPECT_FALSE(w1->IsVisible());
  EXPECT_FALSE(w2->IsVisible());
  EXPECT_FALSE(w3->IsVisible());
  EXPECT_EQ(1, d.hidden());
  EXPECT_EQ(0, d.shown());

  w2->Show();
  EXPECT_FALSE(w1->IsVisible());
  EXPECT_FALSE(w2->IsVisible());
  EXPECT_FALSE(w3->IsVisible());

  w3->Hide();
  EXPECT_FALSE(w1->IsVisible());
  EXPECT_FALSE(w2->IsVisible());
  EXPECT_FALSE(w3->IsVisible());

  d.Clear();
  w1->Show();
  EXPECT_TRUE(w1->IsVisible());
  EXPECT_TRUE(w2->IsVisible());
  EXPECT_FALSE(w3->IsVisible());
  EXPECT_EQ(0, d.hidden());
  EXPECT_EQ(1, d.shown());

  w3->Show();
  EXPECT_TRUE(w1->IsVisible());
  EXPECT_TRUE(w2->IsVisible());
  EXPECT_TRUE(w3->IsVisible());
}

// When set_consume_events() is called with |true| for a Window, that Window
// should make sure that none behind it in the z-order see events if it has
// children. If it does not have children, event targeting works as usual.
TEST_F(WindowTest, StopsEventPropagation) {
  TestWindowDelegate d11;
  TestWindowDelegate d111;
  TestWindowDelegate d121;
  scoped_ptr<Window> w1(CreateTestWindowWithDelegate(NULL, 1,
      gfx::Rect(0, 0, 500, 500), NULL));
  scoped_ptr<Window> w11(CreateTestWindowWithDelegate(&d11, 11,
      gfx::Rect(0, 0, 500, 500), w1.get()));
  scoped_ptr<Window> w111(CreateTestWindowWithDelegate(&d111, 111,
      gfx::Rect(50, 50, 450, 450), w11.get()));
  scoped_ptr<Window> w12(CreateTestWindowWithDelegate(NULL, 12,
      gfx::Rect(0, 0, 500, 500), w1.get()));
  scoped_ptr<Window> w121(CreateTestWindowWithDelegate(&d121, 121,
      gfx::Rect(150, 150, 50, 50), NULL));

  w12->set_stops_event_propagation(true);
  EXPECT_EQ(w11.get(), w1->GetEventHandlerForPoint(gfx::Point(10, 10)));

  EXPECT_TRUE(w111->CanFocus());
  w111->Focus();
  EXPECT_EQ(w111.get(), w1->GetFocusManager()->GetFocusedWindow());

  w12->AddChild(w121.get());

  EXPECT_EQ(NULL, w1->GetEventHandlerForPoint(gfx::Point(10, 10)));
  EXPECT_EQ(w121.get(), w1->GetEventHandlerForPoint(gfx::Point(175, 175)));

  // It should be possible to focus w121 since it is at or above the
  // consumes_events_ window.
  EXPECT_TRUE(w121->CanFocus());
  w121->Focus();
  EXPECT_EQ(w121.get(), w1->GetFocusManager()->GetFocusedWindow());

  // An attempt to focus 111 should be ignored and w121 should retain focus,
  // since a consumes_events_ window with a child is in the z-index above w111.
  EXPECT_FALSE(w111->CanFocus());
  w111->Focus();
  EXPECT_EQ(w121.get(), w1->GetFocusManager()->GetFocusedWindow());
}

TEST_F(WindowTest, Fullscreen) {
  gfx::Rect original_bounds = gfx::Rect(100, 100, 100, 100);
  gfx::Rect desktop_bounds(Desktop::GetInstance()->GetSize());
  scoped_ptr<Window> w(CreateTestWindowWithDelegate(
      NULL, 1, original_bounds, NULL));
  EXPECT_EQ(original_bounds, w->bounds());

  // Restoreing the restored window.
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Fullscreen
  w->Fullscreen();
  EXPECT_EQ(ui::SHOW_STATE_FULLSCREEN, w->show_state());
  EXPECT_EQ(desktop_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Calling Fullscreen() twice should have no additional effect.
  w->Fullscreen();
  w->Fullscreen();
  EXPECT_EQ(desktop_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Calling SetBounds() in fullscreen mode should only update the
  // restore bounds not change the bounds of the window.
  gfx::Rect new_bounds(50, 50, 50, 50);
  w->Fullscreen();
  w->SetBounds(new_bounds);
  EXPECT_EQ(desktop_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(new_bounds, w->bounds());
}

TEST_F(WindowTest, Maximized) {
  gfx::Rect original_bounds = gfx::Rect(100, 100, 100, 100);
  gfx::Rect desktop_bounds(Desktop::GetInstance()->GetSize());
  scoped_ptr<Window> w(CreateTestWindowWithDelegate(
      NULL, 1, original_bounds, NULL));
  EXPECT_EQ(original_bounds, w->bounds());

  // Maximized
  w->Maximize();
  EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, w->show_state());
  gfx::Rect max_bounds(desktop_bounds);
  max_bounds.Inset(10, 10, 10, 10);
  EXPECT_EQ(max_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Maximize twice
  w->Maximize();
  w->Maximize();
  EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, w->show_state());
  EXPECT_EQ(max_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Maximized -> Fullscreen -> Maximized -> Normal
  w->Maximize();
  EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, w->show_state());
  EXPECT_EQ(max_bounds, w->bounds());
  w->Fullscreen();
  EXPECT_EQ(ui::SHOW_STATE_FULLSCREEN, w->show_state());
  EXPECT_EQ(desktop_bounds, w->bounds());
  w->Maximize();
  EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, w->show_state());
  EXPECT_EQ(max_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(ui::SHOW_STATE_NORMAL, w->show_state());
  EXPECT_EQ(original_bounds, w->bounds());

  // Calling SetBounds() in maximized mode mode should only update the
  // restore bounds not change the bounds of the window.
  gfx::Rect new_bounds(50, 50, 50, 50);
  w->Maximize();
  w->SetBounds(new_bounds);
  EXPECT_EQ(max_bounds, w->bounds());
  w->Restore();
  EXPECT_EQ(new_bounds, w->bounds());
}

// Various assertions for activating/deactivating.
TEST_F(WindowTest, Deactivate) {
  TestWindowDelegate d1;
  TestWindowDelegate d2;
  scoped_ptr<Window> w1(
      CreateTestWindowWithDelegate(&d1, 1, gfx::Rect(), NULL));
  scoped_ptr<Window> w2(
      CreateTestWindowWithDelegate(&d2, 2, gfx::Rect(), NULL));
  Window* parent = w1->parent();
  parent->Show();
  ASSERT_TRUE(parent);
  ASSERT_EQ(2u, parent->children().size());
  // Activate w2 and make sure it's active and frontmost.
  w2->Activate();
  EXPECT_TRUE(w2->IsActive());
  EXPECT_FALSE(w1->IsActive());
  EXPECT_EQ(w2.get(), parent->children()[1]);

  // Activate w1 and make sure it's active and frontmost.
  w1->Activate();
  EXPECT_TRUE(w1->IsActive());
  EXPECT_FALSE(w2->IsActive());
  EXPECT_EQ(w1.get(), parent->children()[1]);

  // Deactivate w1 and make sure w2 becomes active and frontmost.
  w1->Deactivate();
  EXPECT_FALSE(w1->IsActive());
  EXPECT_TRUE(w2->IsActive());
  EXPECT_EQ(w2.get(), parent->children()[1]);
}

TEST_F(WindowTest, IsOrContainsFullscreenWindow) {
  scoped_ptr<Window> w1(
      CreateTestWindowWithDelegate(NULL, 1, gfx::Rect(0, 0, 100, 100), NULL));
  scoped_ptr<Window> w11(
      CreateTestWindow(SK_ColorWHITE, 11, gfx::Rect(0, 0, 10, 10), w1.get()));

  Window* root = Desktop::GetInstance()->window();
  EXPECT_FALSE(root->IsOrContainsFullscreenWindow());

  w11->Fullscreen();
  EXPECT_TRUE(root->IsOrContainsFullscreenWindow());

  w11->Hide();
  EXPECT_FALSE(root->IsOrContainsFullscreenWindow());
}

class ToplevelWindowTest : public WindowTest {
 public:
  ToplevelWindowTest() {}
  virtual ~ToplevelWindowTest() {}

  virtual void SetUp() OVERRIDE {
    WindowTest::SetUp();
    toplevel_container_.Init();
    toplevel_container_.SetParent(aura::Desktop::GetInstance()->window());
    toplevel_container_.SetBounds(
        aura::Desktop::GetInstance()->window()->bounds());
    toplevel_container_.Show();
  }

  virtual void TearDown() OVERRIDE {
    toplevel_container_.Hide();
    toplevel_container_.SetParent(NULL);
    WindowTest::TearDown();
  }

  Window* CreateTestToplevelWindow(
      WindowDelegate* delegate, const gfx::Rect& bounds) {
    return CreateTestWindowWithDelegate(
        delegate, 0 /* id */, bounds, &toplevel_container_);
  }

  ToplevelWindowContainer toplevel_container_;

 private:
  DISALLOW_COPY_AND_ASSIGN(ToplevelWindowTest);
};

TEST_F(ToplevelWindowTest, TopMostActivate) {
  ActivateWindowDelegate activate;
  ActivateWindowDelegate non_activate(false);

  scoped_ptr<Window> w1(CreateTestToplevelWindow(&non_activate, gfx::Rect()));
  scoped_ptr<Window> w2(CreateTestToplevelWindow(&activate, gfx::Rect()));
  scoped_ptr<Window> w3(CreateTestToplevelWindow(&non_activate, gfx::Rect()));
  EXPECT_EQ(w2.get(), toplevel_container_.GetTopmostWindowToActivate(NULL));
}

class WindowObserverTest : public WindowTest,
                           public WindowObserver {
 public:
  WindowObserverTest() : added_count_(0), removed_count_(0) {}

  virtual ~WindowObserverTest() {}

  // Returns a description of the WindowObserver methods that have been invoked.
  std::string WindowObserverCountStateAndClear() {
    std::string result(
        base::StringPrintf("added=%d removed=%d",
        added_count_, removed_count_));
    added_count_ = removed_count_ = 0;
    return result;
  }

 private:
  virtual void OnWindowAdded(Window* new_window) OVERRIDE {
    added_count_++;
  }

  virtual void OnWillRemoveWindow(Window* window) OVERRIDE {
    removed_count_++;
  }

  int added_count_;
  int removed_count_;

  DISALLOW_COPY_AND_ASSIGN(WindowObserverTest);
};

// Various assertions for WindowObserver.
TEST_F(WindowObserverTest, WindowObserver) {
  scoped_ptr<Window> w1(CreateTestWindowWithId(1, NULL));
  w1->AddObserver(this);

  // Create a new window as a child of w1, our observer should be notified.
  scoped_ptr<Window> w2(CreateTestWindowWithId(2, w1.get()));
  EXPECT_EQ("added=1 removed=0", WindowObserverCountStateAndClear());

  // Delete w2, which should result in the remove notification.
  w2.reset();
  EXPECT_EQ("added=0 removed=1", WindowObserverCountStateAndClear());

  // Create a window that isn't parented to w1, we shouldn't get any
  // notification.
  scoped_ptr<Window> w3(CreateTestWindowWithId(3, NULL));
  EXPECT_EQ("added=0 removed=0", WindowObserverCountStateAndClear());

  // Similarly destroying w3 shouldn't notify us either.
  w3.reset();
  EXPECT_EQ("added=0 removed=0", WindowObserverCountStateAndClear());
  w1->RemoveObserver(this);
}

class DesktopObserverTest : public WindowTest,
                            public DesktopObserver {
 public:
  DesktopObserverTest() : active_(NULL) {
  }

  virtual ~DesktopObserverTest() {}

  Window* active() const { return active_; }

  void Reset() {
    active_ = NULL;
  }

 private:
  virtual void SetUp() OVERRIDE {
    WindowTest::SetUp();
    Desktop::GetInstance()->AddObserver(this);
  }

  virtual void TearDown() OVERRIDE {
    Desktop::GetInstance()->RemoveObserver(this);
    WindowTest::TearDown();
  }

  virtual void OnActiveWindowChanged(Window* active) OVERRIDE {
    active_ = active;
  }

  Window* active_;

  DISALLOW_COPY_AND_ASSIGN(DesktopObserverTest);
};

TEST_F(DesktopObserverTest, WindowActivationObserve) {
  scoped_ptr<Window> w1(CreateTestWindowWithId(1, NULL));
  scoped_ptr<Window> w2(CreateTestWindowWithId(2, NULL));
  scoped_ptr<Window> w3(CreateTestWindowWithId(3, w1.get()));

  EXPECT_EQ(NULL, active());

  w2->Activate();
  EXPECT_EQ(w2.get(), active());

  w3->Activate();
  EXPECT_EQ(w2.get(), active());

  w1->Activate();
  EXPECT_EQ(w1.get(), active());
}

}  // namespace test
}  // namespace aura