// Copyright (c) 2012 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 "content/browser/renderer_host/render_widget_host_view_aura.h"

#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/memory/shared_memory.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "base/strings/utf_string_conversions.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/compositor_frame_metadata.h"
#include "cc/output/copy_output_request.h"
#include "cc/surfaces/surface.h"
#include "cc/surfaces/surface_manager.h"
#include "content/browser/browser_thread_impl.h"
#include "content/browser/compositor/resize_lock.h"
#include "content/browser/compositor/test/no_transport_image_transport_factory.h"
#include "content/browser/frame_host/render_widget_host_view_guest.h"
#include "content/browser/renderer_host/input/web_input_event_util.h"
#include "content/browser/renderer_host/overscroll_controller.h"
#include "content/browser/renderer_host/overscroll_controller_delegate.h"
#include "content/browser/renderer_host/render_widget_host_delegate.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/common/gpu/client/gl_helper.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/common/host_shared_bitmap_manager.h"
#include "content/common/input/synthetic_web_input_event_builders.h"
#include "content/common/input_messages.h"
#include "content/common/view_messages.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/render_widget_host_view_frame_subscriber.h"
#include "content/public/test/mock_render_process_host.h"
#include "content/public/test/test_browser_context.h"
#include "ipc/ipc_test_sink.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/client/screen_position_client.h"
#include "ui/aura/client/window_tree_client.h"
#include "ui/aura/env.h"
#include "ui/aura/layout_manager.h"
#include "ui/aura/test/aura_test_helper.h"
#include "ui/aura/test/test_cursor_client.h"
#include "ui/aura/test/test_screen.h"
#include "ui/aura/test/test_window_delegate.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_observer.h"
#include "ui/base/ui_base_types.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/compositor/test/draw_waiter_for_test.h"
#include "ui/events/event.h"
#include "ui/events/event_utils.h"
#include "ui/events/gesture_detection/gesture_configuration.h"
#include "ui/events/keycodes/dom3/dom_code.h"
#include "ui/events/keycodes/dom4/keycode_converter.h"
#include "ui/events/test/event_generator.h"
#include "ui/wm/core/default_activation_client.h"
#include "ui/wm/core/default_screen_position_client.h"
#include "ui/wm/core/window_util.h"

using testing::_;

using blink::WebGestureEvent;
using blink::WebInputEvent;
using blink::WebMouseEvent;
using blink::WebMouseWheelEvent;
using blink::WebTouchEvent;
using blink::WebTouchPoint;

namespace content {
namespace {

class TestOverscrollDelegate : public OverscrollControllerDelegate {
 public:
  explicit TestOverscrollDelegate(RenderWidgetHostView* view)
      : view_(view),
        current_mode_(OVERSCROLL_NONE),
        completed_mode_(OVERSCROLL_NONE),
        delta_x_(0.f),
        delta_y_(0.f) {}

  ~TestOverscrollDelegate() override {}

  OverscrollMode current_mode() const { return current_mode_; }
  OverscrollMode completed_mode() const { return completed_mode_; }
  float delta_x() const { return delta_x_; }
  float delta_y() const { return delta_y_; }

  void Reset() {
    current_mode_ = OVERSCROLL_NONE;
    completed_mode_ = OVERSCROLL_NONE;
    delta_x_ = delta_y_ = 0.f;
  }

 private:
  // Overridden from OverscrollControllerDelegate:
  gfx::Rect GetVisibleBounds() const override {
    return view_->IsShowing() ? view_->GetViewBounds() : gfx::Rect();
  }

  bool OnOverscrollUpdate(float delta_x, float delta_y) override {
    delta_x_ = delta_x;
    delta_y_ = delta_y;
    return true;
  }

  void OnOverscrollComplete(OverscrollMode overscroll_mode) override {
    EXPECT_EQ(current_mode_, overscroll_mode);
    completed_mode_ = overscroll_mode;
    current_mode_ = OVERSCROLL_NONE;
  }

  void OnOverscrollModeChange(OverscrollMode old_mode,
                              OverscrollMode new_mode) override {
    EXPECT_EQ(current_mode_, old_mode);
    current_mode_ = new_mode;
    delta_x_ = delta_y_ = 0.f;
  }

  RenderWidgetHostView* view_;
  OverscrollMode current_mode_;
  OverscrollMode completed_mode_;
  float delta_x_;
  float delta_y_;

  DISALLOW_COPY_AND_ASSIGN(TestOverscrollDelegate);
};

class MockRenderWidgetHostDelegate : public RenderWidgetHostDelegate {
 public:
  MockRenderWidgetHostDelegate() {}
  ~MockRenderWidgetHostDelegate() override {}
  const NativeWebKeyboardEvent* last_event() const { return last_event_.get(); }
 protected:
  // RenderWidgetHostDelegate:
  bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                              bool* is_keyboard_shortcut) override {
    last_event_.reset(new NativeWebKeyboardEvent(event));
    return true;
  }
 private:
  scoped_ptr<NativeWebKeyboardEvent> last_event_;
  DISALLOW_COPY_AND_ASSIGN(MockRenderWidgetHostDelegate);
};

// Simple observer that keeps track of changes to a window for tests.
class TestWindowObserver : public aura::WindowObserver {
 public:
  explicit TestWindowObserver(aura::Window* window_to_observe)
      : window_(window_to_observe) {
    window_->AddObserver(this);
  }
  ~TestWindowObserver() override {
    if (window_)
      window_->RemoveObserver(this);
  }

  bool destroyed() const { return destroyed_; }

  // aura::WindowObserver overrides:
  void OnWindowDestroyed(aura::Window* window) override {
    CHECK_EQ(window, window_);
    destroyed_ = true;
    window_ = NULL;
  }

 private:
  // Window that we're observing, or NULL if it's been destroyed.
  aura::Window* window_;

  // Was |window_| destroyed?
  bool destroyed_;

  DISALLOW_COPY_AND_ASSIGN(TestWindowObserver);
};

class FakeFrameSubscriber : public RenderWidgetHostViewFrameSubscriber {
 public:
  FakeFrameSubscriber(gfx::Size size, base::Callback<void(bool)> callback)
      : size_(size), callback_(callback) {}

  bool ShouldCaptureFrame(const gfx::Rect& damage_rect,
                          base::TimeTicks present_time,
                          scoped_refptr<media::VideoFrame>* storage,
                          DeliverFrameCallback* callback) override {
    *storage = media::VideoFrame::CreateFrame(media::VideoFrame::YV12,
                                              size_,
                                              gfx::Rect(size_),
                                              size_,
                                              base::TimeDelta());
    *callback = base::Bind(&FakeFrameSubscriber::CallbackMethod, callback_);
    return true;
  }

  static void CallbackMethod(base::Callback<void(bool)> callback,
                             base::TimeTicks timestamp,
                             bool success) {
    callback.Run(success);
  }

 private:
  gfx::Size size_;
  base::Callback<void(bool)> callback_;
};

class FakeRenderWidgetHostViewAura : public RenderWidgetHostViewAura {
 public:
  FakeRenderWidgetHostViewAura(RenderWidgetHost* widget,
                               bool is_guest_view_hack)
      : RenderWidgetHostViewAura(widget, is_guest_view_hack),
        has_resize_lock_(false) {}

  ~FakeRenderWidgetHostViewAura() override {}

  scoped_ptr<ResizeLock> CreateResizeLock(bool defer_compositor_lock) override {
    gfx::Size desired_size = window()->bounds().size();
    return scoped_ptr<ResizeLock>(
        new FakeResizeLock(desired_size, defer_compositor_lock));
  }

  void RunOnCompositingDidCommit() {
    GetDelegatedFrameHost()->OnCompositingDidCommitForTesting(
        window()->GetHost()->compositor());
  }

  bool ShouldCreateResizeLock() override {
    return GetDelegatedFrameHost()->ShouldCreateResizeLockForTesting();
  }

  void RequestCopyOfOutput(scoped_ptr<cc::CopyOutputRequest> request) override {
    last_copy_request_ = request.Pass();
    if (last_copy_request_->has_texture_mailbox()) {
      // Give the resulting texture a size.
      GLHelper* gl_helper = ImageTransportFactory::GetInstance()->GetGLHelper();
      GLuint texture = gl_helper->ConsumeMailboxToTexture(
          last_copy_request_->texture_mailbox().mailbox(),
          last_copy_request_->texture_mailbox().sync_point());
      gl_helper->ResizeTexture(texture, window()->bounds().size());
      gl_helper->DeleteTexture(texture);
    }
  }

  cc::DelegatedFrameProvider* frame_provider() const {
    return GetDelegatedFrameHost()->FrameProviderForTesting();
  }

  cc::SurfaceId surface_id() const {
    return GetDelegatedFrameHost()->SurfaceIdForTesting();
  }

  bool HasFrameData() const {
    return frame_provider() || !surface_id().is_null();
  }

  bool released_front_lock_active() const {
    return GetDelegatedFrameHost()->ReleasedFrontLockActiveForTesting();
  }

  // A lock that doesn't actually do anything to the compositor, and does not
  // time out.
  class FakeResizeLock : public ResizeLock {
   public:
    FakeResizeLock(const gfx::Size new_size, bool defer_compositor_lock)
        : ResizeLock(new_size, defer_compositor_lock) {}
  };

  void OnTouchEvent(ui::TouchEvent* event) override {
    RenderWidgetHostViewAura::OnTouchEvent(event);
    if (pointer_state().GetPointerCount() > 0) {
      touch_event_.reset(
          new blink::WebTouchEvent(CreateWebTouchEventFromMotionEvent(
              pointer_state(), event->may_cause_scrolling())));
    } else {
      // Never create a WebTouchEvent with 0 touch points.
      touch_event_.reset();
    }
  }

  bool has_resize_lock_;
  gfx::Size last_frame_size_;
  scoped_ptr<cc::CopyOutputRequest> last_copy_request_;
  // null if there are 0 active touch points.
  scoped_ptr<blink::WebTouchEvent> touch_event_;
};

// A layout manager that always resizes a child to the root window size.
class FullscreenLayoutManager : public aura::LayoutManager {
 public:
  explicit FullscreenLayoutManager(aura::Window* owner) : owner_(owner) {}
  ~FullscreenLayoutManager() override {}

  // Overridden from aura::LayoutManager:
  void OnWindowResized() override {
    aura::Window::Windows::const_iterator i;
    for (i = owner_->children().begin(); i != owner_->children().end(); ++i) {
      (*i)->SetBounds(gfx::Rect());
    }
  }
  void OnWindowAddedToLayout(aura::Window* child) override {
    child->SetBounds(gfx::Rect());
  }
  void OnWillRemoveWindowFromLayout(aura::Window* child) override {}
  void OnWindowRemovedFromLayout(aura::Window* child) override {}
  void OnChildWindowVisibilityChanged(aura::Window* child,
                                      bool visible) override {}
  void SetChildBounds(aura::Window* child,
                      const gfx::Rect& requested_bounds) override {
    SetChildBoundsDirect(child, gfx::Rect(owner_->bounds().size()));
  }

 private:
  aura::Window* owner_;
  DISALLOW_COPY_AND_ASSIGN(FullscreenLayoutManager);
};

class MockWindowObserver : public aura::WindowObserver {
 public:
  MOCK_METHOD2(OnDelegatedFrameDamage, void(aura::Window*, const gfx::Rect&));
};

}  // namespace

class RenderWidgetHostViewAuraTest : public testing::Test {
 public:
  RenderWidgetHostViewAuraTest()
      : widget_host_uses_shutdown_to_destroy_(false),
        is_guest_view_hack_(false),
        browser_thread_for_ui_(BrowserThread::UI, &message_loop_) {}

  void SetUpEnvironment() {
    ImageTransportFactory::InitializeForUnitTests(
        scoped_ptr<ImageTransportFactory>(
            new NoTransportImageTransportFactory));
    aura_test_helper_.reset(new aura::test::AuraTestHelper(&message_loop_));
    aura_test_helper_->SetUp(
        ImageTransportFactory::GetInstance()->GetContextFactory());
    new wm::DefaultActivationClient(aura_test_helper_->root_window());

    browser_context_.reset(new TestBrowserContext);
    process_host_ = new MockRenderProcessHost(browser_context_.get());

    sink_ = &process_host_->sink();

    parent_host_ = new RenderWidgetHostImpl(
        &delegate_, process_host_, MSG_ROUTING_NONE, false);
    parent_view_ = new RenderWidgetHostViewAura(parent_host_,
                                                is_guest_view_hack_);
    parent_view_->InitAsChild(NULL);
    aura::client::ParentWindowWithContext(parent_view_->GetNativeView(),
                                          aura_test_helper_->root_window(),
                                          gfx::Rect());

    widget_host_ = new RenderWidgetHostImpl(
        &delegate_, process_host_, MSG_ROUTING_NONE, false);
    widget_host_->Init();
    view_ = new FakeRenderWidgetHostViewAura(widget_host_, is_guest_view_hack_);
  }

  void TearDownEnvironment() {
    sink_ = NULL;
    process_host_ = NULL;
    if (view_)
      view_->Destroy();

    if (widget_host_uses_shutdown_to_destroy_)
      widget_host_->Shutdown();
    else
      delete widget_host_;

    parent_view_->Destroy();
    delete parent_host_;

    browser_context_.reset();
    aura_test_helper_->TearDown();

    message_loop_.DeleteSoon(FROM_HERE, browser_context_.release());
    message_loop_.RunUntilIdle();
    ImageTransportFactory::Terminate();
  }

  void SetUp() override { SetUpEnvironment(); }

  void TearDown() override { TearDownEnvironment(); }

  void set_widget_host_uses_shutdown_to_destroy(bool use) {
    widget_host_uses_shutdown_to_destroy_ = use;
  }

  void SimulateMemoryPressure(
      base::MemoryPressureListener::MemoryPressureLevel level) {
    // Here should be base::MemoryPressureListener::NotifyMemoryPressure, but
    // since the RendererFrameManager is installing a MemoryPressureListener
    // which uses ObserverListThreadSafe, which furthermore remembers the
    // message loop for the thread it was created in. Between tests, the
    // RendererFrameManager singleton survives and and the MessageLoop gets
    // destroyed. The correct fix would be to have ObserverListThreadSafe look
    // up the proper message loop every time (see crbug.com/443824.)
    RendererFrameManager::GetInstance()->OnMemoryPressure(level);
  }

 protected:
  // If true, then calls RWH::Shutdown() instead of deleting RWH.
  bool widget_host_uses_shutdown_to_destroy_;

  bool is_guest_view_hack_;

  base::MessageLoopForUI message_loop_;
  BrowserThreadImpl browser_thread_for_ui_;
  scoped_ptr<aura::test::AuraTestHelper> aura_test_helper_;
  scoped_ptr<BrowserContext> browser_context_;
  MockRenderWidgetHostDelegate delegate_;
  MockRenderProcessHost* process_host_;

  // Tests should set these to NULL if they've already triggered their
  // destruction.
  RenderWidgetHostImpl* parent_host_;
  RenderWidgetHostViewAura* parent_view_;

  // Tests should set these to NULL if they've already triggered their
  // destruction.
  RenderWidgetHostImpl* widget_host_;
  FakeRenderWidgetHostViewAura* view_;

  IPC::TestSink* sink_;

 private:
  DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAuraTest);
};

// Helper class to instantiate RenderWidgetHostViewGuest which is backed
// by an aura platform view.
class RenderWidgetHostViewGuestAuraTest : public RenderWidgetHostViewAuraTest {
 public:
  RenderWidgetHostViewGuestAuraTest() {
    // Use RWH::Shutdown to destroy RWH, instead of deleting.
    // This will ensure that the RenderWidgetHostViewGuest is not leaked and
    // is deleted properly upon RWH going away.
    set_widget_host_uses_shutdown_to_destroy(true);
  }

  // We explicitly invoke SetUp to allow gesture debounce customization.
  void SetUp() override {
    is_guest_view_hack_ = true;

    RenderWidgetHostViewAuraTest::SetUp();

    guest_view_weak_ = (new RenderWidgetHostViewGuest(
        widget_host_, NULL, view_->GetWeakPtr()))->GetWeakPtr();
  }

  void TearDown() override {
    // Internal override to do nothing, we clean up ourselves in the test body.
    // This helps us test that |guest_view_weak_| does not leak.
  }

 protected:
  base::WeakPtr<RenderWidgetHostViewBase> guest_view_weak_;

 private:

  DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuestAuraTest);
};

class RenderWidgetHostViewAuraOverscrollTest
    : public RenderWidgetHostViewAuraTest {
 public:
  RenderWidgetHostViewAuraOverscrollTest() {}

  // We explicitly invoke SetUp to allow gesture debounce customization.
  void SetUp() override {}

 protected:
  void SetUpOverscrollEnvironmentWithDebounce(int debounce_interval_in_ms) {
    SetUpOverscrollEnvironmentImpl(debounce_interval_in_ms);
  }

  void SetUpOverscrollEnvironment() { SetUpOverscrollEnvironmentImpl(0); }

  void SetUpOverscrollEnvironmentImpl(int debounce_interval_in_ms) {
    ui::GestureConfiguration::GetInstance()->set_scroll_debounce_interval_in_ms(
        debounce_interval_in_ms);

    RenderWidgetHostViewAuraTest::SetUp();

    view_->SetOverscrollControllerEnabled(true);
    overscroll_delegate_.reset(new TestOverscrollDelegate(view_));
    view_->overscroll_controller()->set_delegate(overscroll_delegate_.get());

    view_->InitAsChild(NULL);
    view_->SetBounds(gfx::Rect(0, 0, 400, 200));
    view_->Show();

    sink_->ClearMessages();
  }

  // TODO(jdduke): Simulate ui::Events, injecting through the view.
  void SimulateMouseEvent(WebInputEvent::Type type) {
    widget_host_->ForwardMouseEvent(SyntheticWebMouseEventBuilder::Build(type));
  }

  void SimulateMouseEventWithLatencyInfo(WebInputEvent::Type type,
                                         const ui::LatencyInfo& ui_latency) {
    widget_host_->ForwardMouseEventWithLatencyInfo(
        SyntheticWebMouseEventBuilder::Build(type), ui_latency);
  }

  void SimulateWheelEvent(float dX, float dY, int modifiers, bool precise) {
    widget_host_->ForwardWheelEvent(
        SyntheticWebMouseWheelEventBuilder::Build(dX, dY, modifiers, precise));
  }

  void SimulateWheelEventWithLatencyInfo(float dX,
                                         float dY,
                                         int modifiers,
                                         bool precise,
                                         const ui::LatencyInfo& ui_latency) {
    widget_host_->ForwardWheelEventWithLatencyInfo(
        SyntheticWebMouseWheelEventBuilder::Build(dX, dY, modifiers, precise),
        ui_latency);
  }

  void SimulateMouseMove(int x, int y, int modifiers) {
    SimulateMouseEvent(WebInputEvent::MouseMove, x, y, modifiers, false);
  }

  void SimulateMouseEvent(WebInputEvent::Type type,
                          int x,
                          int y,
                          int modifiers,
                          bool pressed) {
    WebMouseEvent event =
        SyntheticWebMouseEventBuilder::Build(type, x, y, modifiers);
    if (pressed)
      event.button = WebMouseEvent::ButtonLeft;
    widget_host_->ForwardMouseEvent(event);
  }

  void SimulateWheelEventWithPhase(WebMouseWheelEvent::Phase phase) {
    widget_host_->ForwardWheelEvent(
        SyntheticWebMouseWheelEventBuilder::Build(phase));
  }

  // Inject provided synthetic WebGestureEvent instance.
  void SimulateGestureEventCore(const WebGestureEvent& gesture_event) {
    widget_host_->ForwardGestureEvent(gesture_event);
  }

  void SimulateGestureEventCoreWithLatencyInfo(
      const WebGestureEvent& gesture_event,
      const ui::LatencyInfo& ui_latency) {
    widget_host_->ForwardGestureEventWithLatencyInfo(gesture_event, ui_latency);
  }

  // Inject simple synthetic WebGestureEvent instances.
  void SimulateGestureEvent(WebInputEvent::Type type,
                            blink::WebGestureDevice sourceDevice) {
    SimulateGestureEventCore(
        SyntheticWebGestureEventBuilder::Build(type, sourceDevice));
  }

  void SimulateGestureEventWithLatencyInfo(WebInputEvent::Type type,
                                           blink::WebGestureDevice sourceDevice,
                                           const ui::LatencyInfo& ui_latency) {
    SimulateGestureEventCoreWithLatencyInfo(
        SyntheticWebGestureEventBuilder::Build(type, sourceDevice), ui_latency);
  }

  void SimulateGestureScrollUpdateEvent(float dX, float dY, int modifiers) {
    SimulateGestureEventCore(SyntheticWebGestureEventBuilder::BuildScrollUpdate(
        dX, dY, modifiers, blink::WebGestureDeviceTouchscreen));
  }

  void SimulateGesturePinchUpdateEvent(float scale,
                                       float anchorX,
                                       float anchorY,
                                       int modifiers) {
    SimulateGestureEventCore(SyntheticWebGestureEventBuilder::BuildPinchUpdate(
        scale,
        anchorX,
        anchorY,
        modifiers,
        blink::WebGestureDeviceTouchscreen));
  }

  // Inject synthetic GestureFlingStart events.
  void SimulateGestureFlingStartEvent(float velocityX,
                                      float velocityY,
                                      blink::WebGestureDevice sourceDevice) {
    SimulateGestureEventCore(SyntheticWebGestureEventBuilder::BuildFling(
        velocityX, velocityY, sourceDevice));
  }

  void SendInputEventACK(WebInputEvent::Type type,
                         InputEventAckState ack_result) {
    InputHostMsg_HandleInputEvent_ACK_Params ack;
    ack.type = type;
    ack.state = ack_result;
    InputHostMsg_HandleInputEvent_ACK response(0, ack);
    widget_host_->OnMessageReceived(response);
  }

  bool ScrollStateIsContentScrolling() const {
    return scroll_state() == OverscrollController::STATE_CONTENT_SCROLLING;
  }

  bool ScrollStateIsOverscrolling() const {
    return scroll_state() == OverscrollController::STATE_OVERSCROLLING;
  }

  bool ScrollStateIsUnknown() const {
    return scroll_state() == OverscrollController::STATE_UNKNOWN;
  }

  OverscrollController::ScrollState scroll_state() const {
    return view_->overscroll_controller()->scroll_state_;
  }

  OverscrollMode overscroll_mode() const {
    return view_->overscroll_controller()->overscroll_mode_;
  }

  float overscroll_delta_x() const {
    return view_->overscroll_controller()->overscroll_delta_x_;
  }

  float overscroll_delta_y() const {
    return view_->overscroll_controller()->overscroll_delta_y_;
  }

  TestOverscrollDelegate* overscroll_delegate() {
    return overscroll_delegate_.get();
  }

  void SendTouchEvent() {
    widget_host_->ForwardTouchEventWithLatencyInfo(touch_event_,
                                                   ui::LatencyInfo());
    touch_event_.ResetPoints();
  }

  void PressTouchPoint(int x, int y) {
    touch_event_.PressPoint(x, y);
    SendTouchEvent();
  }

  void MoveTouchPoint(int index, int x, int y) {
    touch_event_.MovePoint(index, x, y);
    SendTouchEvent();
  }

  void ReleaseTouchPoint(int index) {
    touch_event_.ReleasePoint(index);
    SendTouchEvent();
  }

  size_t GetSentMessageCountAndResetSink() {
    size_t count = sink_->message_count();
    sink_->ClearMessages();
    return count;
  }

  void AckLastSentInputEventIfNecessary(InputEventAckState ack_result) {
    if (!sink_->message_count())
      return;

    InputMsg_HandleInputEvent::Param params;
    if (!InputMsg_HandleInputEvent::Read(
            sink_->GetMessageAt(sink_->message_count() - 1), &params)) {
      return;
    }

    if (WebInputEventTraits::IgnoresAckDisposition(*get<0>(params)))
      return;

    SendInputEventACK(get<0>(params)->type, ack_result);
  }

  SyntheticWebTouchEvent touch_event_;

  scoped_ptr<TestOverscrollDelegate> overscroll_delegate_;

 private:
  DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAuraOverscrollTest);
};

class RenderWidgetHostViewAuraShutdownTest
    : public RenderWidgetHostViewAuraTest {
 public:
  RenderWidgetHostViewAuraShutdownTest() {}

  void TearDown() override {
    // No TearDownEnvironment here, we do this explicitly during the test.
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAuraShutdownTest);
};

// Checks that a fullscreen view has the correct show-state and receives the
// focus.
TEST_F(RenderWidgetHostViewAuraTest, FocusFullscreen) {
  view_->InitAsFullscreen(parent_view_);
  aura::Window* window = view_->GetNativeView();
  ASSERT_TRUE(window != NULL);
  EXPECT_EQ(ui::SHOW_STATE_FULLSCREEN,
            window->GetProperty(aura::client::kShowStateKey));

  // Check that we requested and received the focus.
  EXPECT_TRUE(window->HasFocus());

  // Check that we'll also say it's okay to activate the window when there's an
  // ActivationClient defined.
  EXPECT_TRUE(view_->ShouldActivate());
}

// Checks that a popup is positioned correctly relative to its parent using
// screen coordinates.
TEST_F(RenderWidgetHostViewAuraTest, PositionChildPopup) {
  wm::DefaultScreenPositionClient screen_position_client;

  aura::Window* window = parent_view_->GetNativeView();
  aura::Window* root = window->GetRootWindow();
  aura::client::SetScreenPositionClient(root, &screen_position_client);

  parent_view_->SetBounds(gfx::Rect(10, 10, 800, 600));
  gfx::Rect bounds_in_screen = parent_view_->GetViewBounds();
  int horiz = bounds_in_screen.width() / 4;
  int vert = bounds_in_screen.height() / 4;
  bounds_in_screen.Inset(horiz, vert);

  // Verify that when the popup is initialized for the first time, it correctly
  // treats the input bounds as screen coordinates.
  view_->InitAsPopup(parent_view_, bounds_in_screen);

  gfx::Rect final_bounds_in_screen = view_->GetViewBounds();
  EXPECT_EQ(final_bounds_in_screen.ToString(), bounds_in_screen.ToString());

  // Verify that directly setting the bounds via SetBounds() treats the input
  // as screen coordinates.
  bounds_in_screen = gfx::Rect(60, 60, 100, 100);
  view_->SetBounds(bounds_in_screen);
  final_bounds_in_screen = view_->GetViewBounds();
  EXPECT_EQ(final_bounds_in_screen.ToString(), bounds_in_screen.ToString());

  // Verify that setting the size does not alter the origin.
  gfx::Point original_origin = window->bounds().origin();
  view_->SetSize(gfx::Size(120, 120));
  gfx::Point new_origin = window->bounds().origin();
  EXPECT_EQ(original_origin.ToString(), new_origin.ToString());

  aura::client::SetScreenPositionClient(root, NULL);
}

// Checks that a fullscreen view is destroyed when it loses the focus.
TEST_F(RenderWidgetHostViewAuraTest, DestroyFullscreenOnBlur) {
  view_->InitAsFullscreen(parent_view_);
  aura::Window* window = view_->GetNativeView();
  ASSERT_TRUE(window != NULL);
  ASSERT_TRUE(window->HasFocus());

  // After we create and focus another window, the RWHVA's window should be
  // destroyed.
  TestWindowObserver observer(window);
  aura::test::TestWindowDelegate delegate;
  scoped_ptr<aura::Window> sibling(new aura::Window(&delegate));
  sibling->Init(aura::WINDOW_LAYER_TEXTURED);
  sibling->Show();
  window->parent()->AddChild(sibling.get());
  sibling->Focus();
  ASSERT_TRUE(sibling->HasFocus());
  ASSERT_TRUE(observer.destroyed());

  widget_host_ = NULL;
  view_ = NULL;
}

// Checks that a popup view is destroyed when a user clicks outside of the popup
// view and focus does not change. This is the case when the user clicks on the
// desktop background on Chrome OS.
TEST_F(RenderWidgetHostViewAuraTest, DestroyPopupClickOutsidePopup) {
  parent_view_->SetBounds(gfx::Rect(10, 10, 400, 400));
  parent_view_->Focus();
  EXPECT_TRUE(parent_view_->HasFocus());

  view_->InitAsPopup(parent_view_, gfx::Rect(10, 10, 100, 100));
  aura::Window* window = view_->GetNativeView();
  ASSERT_TRUE(window != NULL);

  gfx::Point click_point;
  EXPECT_FALSE(window->GetBoundsInRootWindow().Contains(click_point));
  aura::Window* parent_window = parent_view_->GetNativeView();
  EXPECT_FALSE(parent_window->GetBoundsInRootWindow().Contains(click_point));

  TestWindowObserver observer(window);
  ui::test::EventGenerator generator(window->GetRootWindow(), click_point);
  generator.ClickLeftButton();
  ASSERT_TRUE(parent_view_->HasFocus());
  ASSERT_TRUE(observer.destroyed());

  widget_host_ = NULL;
  view_ = NULL;
}

// Checks that a popup view is destroyed when a user taps outside of the popup
// view and focus does not change. This is the case when the user taps the
// desktop background on Chrome OS.
TEST_F(RenderWidgetHostViewAuraTest, DestroyPopupTapOutsidePopup) {
  parent_view_->SetBounds(gfx::Rect(10, 10, 400, 400));
  parent_view_->Focus();
  EXPECT_TRUE(parent_view_->HasFocus());

  view_->InitAsPopup(parent_view_, gfx::Rect(10, 10, 100, 100));
  aura::Window* window = view_->GetNativeView();
  ASSERT_TRUE(window != NULL);

  gfx::Point tap_point;
  EXPECT_FALSE(window->GetBoundsInRootWindow().Contains(tap_point));
  aura::Window* parent_window = parent_view_->GetNativeView();
  EXPECT_FALSE(parent_window->GetBoundsInRootWindow().Contains(tap_point));

  TestWindowObserver observer(window);
  ui::test::EventGenerator generator(window->GetRootWindow(), tap_point);
  generator.GestureTapAt(tap_point);
  ASSERT_TRUE(parent_view_->HasFocus());
  ASSERT_TRUE(observer.destroyed());

  widget_host_ = NULL;
  view_ = NULL;
}

#if defined(OS_LINUX) && !defined(OS_CHROMEOS)

// On Desktop Linux, select boxes need mouse capture in order to work. Test that
// when a select box is opened via a mouse press that it retains mouse capture
// after the mouse is released.
TEST_F(RenderWidgetHostViewAuraTest, PopupRetainsCaptureAfterMouseRelease) {
  parent_view_->SetBounds(gfx::Rect(10, 10, 400, 400));
  parent_view_->Focus();
  EXPECT_TRUE(parent_view_->HasFocus());

  ui::test::EventGenerator generator(
      parent_view_->GetNativeView()->GetRootWindow(), gfx::Point(300, 300));
  generator.PressLeftButton();

  view_->SetPopupType(blink::WebPopupTypeSelect);
  view_->InitAsPopup(parent_view_, gfx::Rect(10, 10, 100, 100));
  ASSERT_TRUE(view_->NeedsMouseCapture());
  aura::Window* window = view_->GetNativeView();
  EXPECT_TRUE(window->HasCapture());

  generator.ReleaseLeftButton();
  EXPECT_TRUE(window->HasCapture());
}
#endif

// Test that select boxes close when their parent window loses focus (e.g. due
// to an alert or system modal dialog).
TEST_F(RenderWidgetHostViewAuraTest, PopupClosesWhenParentLosesFocus) {
  parent_view_->SetBounds(gfx::Rect(10, 10, 400, 400));
  parent_view_->Focus();
  EXPECT_TRUE(parent_view_->HasFocus());

  view_->SetPopupType(blink::WebPopupTypeSelect);
  view_->InitAsPopup(parent_view_, gfx::Rect(10, 10, 100, 100));

  aura::Window* popup_window = view_->GetNativeView();
  TestWindowObserver observer(popup_window);

  aura::test::TestWindowDelegate delegate;
  scoped_ptr<aura::Window> dialog_window(new aura::Window(&delegate));
  dialog_window->Init(aura::WINDOW_LAYER_TEXTURED);
  aura::client::ParentWindowWithContext(
      dialog_window.get(), popup_window, gfx::Rect());
  dialog_window->Show();
  wm::ActivateWindow(dialog_window.get());
  dialog_window->Focus();

  ASSERT_TRUE(wm::IsActiveWindow(dialog_window.get()));
  EXPECT_TRUE(observer.destroyed());

  widget_host_ = NULL;
  view_ = NULL;
}

// Checks that IME-composition-event state is maintained correctly.
TEST_F(RenderWidgetHostViewAuraTest, SetCompositionText) {
  view_->InitAsChild(NULL);
  view_->Show();

  ui::CompositionText composition_text;
  composition_text.text = base::ASCIIToUTF16("|a|b");

  // Focused segment
  composition_text.underlines.push_back(
      ui::CompositionUnderline(0, 3, 0xff000000, true, 0x78563412));

  // Non-focused segment, with different background color.
  composition_text.underlines.push_back(
      ui::CompositionUnderline(3, 4, 0xff000000, false, 0xefcdab90));

  const ui::CompositionUnderlines& underlines = composition_text.underlines;

  // Caret is at the end. (This emulates Japanese MSIME 2007 and later)
  composition_text.selection = gfx::Range(4);

  sink_->ClearMessages();
  view_->SetCompositionText(composition_text);
  EXPECT_TRUE(view_->has_composition_text_);
  {
    const IPC::Message* msg =
      sink_->GetFirstMessageMatching(InputMsg_ImeSetComposition::ID);
    ASSERT_TRUE(msg != NULL);

    InputMsg_ImeSetComposition::Param params;
    InputMsg_ImeSetComposition::Read(msg, &params);
    // composition text
    EXPECT_EQ(composition_text.text, get<0>(params));
    // underlines
    ASSERT_EQ(underlines.size(), get<1>(params).size());
    for (size_t i = 0; i < underlines.size(); ++i) {
      EXPECT_EQ(underlines[i].start_offset, get<1>(params)[i].startOffset);
      EXPECT_EQ(underlines[i].end_offset, get<1>(params)[i].endOffset);
      EXPECT_EQ(underlines[i].color, get<1>(params)[i].color);
      EXPECT_EQ(underlines[i].thick, get<1>(params)[i].thick);
      EXPECT_EQ(underlines[i].background_color,
                get<1>(params)[i].backgroundColor);
    }
    // highlighted range
    EXPECT_EQ(4, get<2>(params)) << "Should be the same to the caret pos";
    EXPECT_EQ(4, get<3>(params)) << "Should be the same to the caret pos";
  }

  view_->ImeCancelComposition();
  EXPECT_FALSE(view_->has_composition_text_);
}

// Checks that sequence of IME-composition-event and mouse-event when mouse
// clicking to cancel the composition.
TEST_F(RenderWidgetHostViewAuraTest, FinishCompositionByMouse) {
  view_->InitAsChild(NULL);
  view_->Show();

  ui::CompositionText composition_text;
  composition_text.text = base::ASCIIToUTF16("|a|b");

  // Focused segment
  composition_text.underlines.push_back(
      ui::CompositionUnderline(0, 3, 0xff000000, true, 0x78563412));

  // Non-focused segment, with different background color.
  composition_text.underlines.push_back(
      ui::CompositionUnderline(3, 4, 0xff000000, false, 0xefcdab90));

  // Caret is at the end. (This emulates Japanese MSIME 2007 and later)
  composition_text.selection = gfx::Range(4);

  view_->SetCompositionText(composition_text);
  EXPECT_TRUE(view_->has_composition_text_);
  sink_->ClearMessages();

  // Simulates the mouse press.
  ui::MouseEvent mouse_event(ui::ET_MOUSE_PRESSED,
                             gfx::Point(), gfx::Point(),
                             ui::EF_LEFT_MOUSE_BUTTON, 0);
  view_->OnMouseEvent(&mouse_event);

  EXPECT_FALSE(view_->has_composition_text_);

  EXPECT_EQ(2U, sink_->message_count());

  if (sink_->message_count() == 2) {
    // Verify mouse event happens after the confirm-composition event.
    EXPECT_EQ(InputMsg_ImeConfirmComposition::ID,
              sink_->GetMessageAt(0)->type());
    EXPECT_EQ(InputMsg_HandleInputEvent::ID,
              sink_->GetMessageAt(1)->type());
  }
}

// Checks that touch-event state is maintained correctly.
TEST_F(RenderWidgetHostViewAuraTest, TouchEventState) {
  view_->InitAsChild(NULL);
  view_->Show();

  // Start with no touch-event handler in the renderer.
  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, false));
  EXPECT_FALSE(widget_host_->ShouldForwardTouchEvent());

  ui::TouchEvent press(ui::ET_TOUCH_PRESSED,
                       gfx::Point(30, 30),
                       0,
                       ui::EventTimeForNow());
  ui::TouchEvent move(ui::ET_TOUCH_MOVED,
                      gfx::Point(20, 20),
                      0,
                      ui::EventTimeForNow());
  ui::TouchEvent release(ui::ET_TOUCH_RELEASED,
                         gfx::Point(20, 20),
                         0,
                         ui::EventTimeForNow());

  view_->OnTouchEvent(&press);
  EXPECT_FALSE(press.handled());
  EXPECT_EQ(blink::WebInputEvent::TouchStart, view_->touch_event_->type);
  EXPECT_TRUE(view_->touch_event_->cancelable);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StatePressed,
            view_->touch_event_->touches[0].state);

  view_->OnTouchEvent(&move);
  EXPECT_FALSE(move.handled());
  EXPECT_EQ(blink::WebInputEvent::TouchMove, view_->touch_event_->type);
  EXPECT_TRUE(view_->touch_event_->cancelable);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StateMoved,
            view_->touch_event_->touches[0].state);

  view_->OnTouchEvent(&release);
  EXPECT_FALSE(release.handled());
  EXPECT_EQ(nullptr, view_->touch_event_);

  // Now install some touch-event handlers and do the same steps. The touch
  // events should now be consumed. However, the touch-event state should be
  // updated as before.
  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, true));
  EXPECT_TRUE(widget_host_->ShouldForwardTouchEvent());

  view_->OnTouchEvent(&press);
  EXPECT_TRUE(press.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchStart, view_->touch_event_->type);
  EXPECT_TRUE(view_->touch_event_->cancelable);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StatePressed,
            view_->touch_event_->touches[0].state);

  view_->OnTouchEvent(&move);
  EXPECT_TRUE(move.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchMove, view_->touch_event_->type);
  EXPECT_TRUE(view_->touch_event_->cancelable);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StateMoved,
            view_->touch_event_->touches[0].state);
  view_->OnTouchEvent(&release);
  EXPECT_TRUE(release.synchronous_handling_disabled());
  EXPECT_EQ(nullptr, view_->touch_event_);

  // Now start a touch event, and remove the event-handlers before the release.
  view_->OnTouchEvent(&press);
  EXPECT_TRUE(press.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchStart, view_->touch_event_->type);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StatePressed,
            view_->touch_event_->touches[0].state);

  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, false));
  EXPECT_TRUE(widget_host_->ShouldForwardTouchEvent());

  // Ack'ing the outstanding event should flush the pending touch queue.
  InputHostMsg_HandleInputEvent_ACK_Params ack;
  ack.type = blink::WebInputEvent::TouchStart;
  ack.state = INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
  widget_host_->OnMessageReceived(InputHostMsg_HandleInputEvent_ACK(0, ack));
  EXPECT_FALSE(widget_host_->ShouldForwardTouchEvent());

  ui::TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(20, 20), 0,
      base::Time::NowFromSystemTime() - base::Time());
  view_->OnTouchEvent(&move2);
  EXPECT_FALSE(move2.handled());
  EXPECT_EQ(blink::WebInputEvent::TouchMove, view_->touch_event_->type);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StateMoved,
            view_->touch_event_->touches[0].state);

  ui::TouchEvent release2(ui::ET_TOUCH_RELEASED, gfx::Point(20, 20), 0,
      base::Time::NowFromSystemTime() - base::Time());
  view_->OnTouchEvent(&release2);
  EXPECT_FALSE(release2.handled());
  EXPECT_EQ(nullptr, view_->touch_event_);
}

// Checks that touch-events are queued properly when there is a touch-event
// handler on the page.
TEST_F(RenderWidgetHostViewAuraTest, TouchEventSyncAsync) {
  view_->InitAsChild(NULL);
  view_->Show();

  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, true));
  EXPECT_TRUE(widget_host_->ShouldForwardTouchEvent());

  ui::TouchEvent press(ui::ET_TOUCH_PRESSED,
                       gfx::Point(30, 30),
                       0,
                       ui::EventTimeForNow());
  ui::TouchEvent move(ui::ET_TOUCH_MOVED,
                      gfx::Point(20, 20),
                      0,
                      ui::EventTimeForNow());
  ui::TouchEvent release(ui::ET_TOUCH_RELEASED,
                         gfx::Point(20, 20),
                         0,
                         ui::EventTimeForNow());

  view_->OnTouchEvent(&press);
  EXPECT_TRUE(press.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchStart, view_->touch_event_->type);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StatePressed,
            view_->touch_event_->touches[0].state);

  view_->OnTouchEvent(&move);
  EXPECT_TRUE(move.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchMove, view_->touch_event_->type);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StateMoved,
            view_->touch_event_->touches[0].state);

  // Send the same move event. Since the point hasn't moved, it won't affect the
  // queue. However, the view should consume the event.
  view_->OnTouchEvent(&move);
  EXPECT_TRUE(move.synchronous_handling_disabled());
  EXPECT_EQ(blink::WebInputEvent::TouchMove, view_->touch_event_->type);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StateMoved,
            view_->touch_event_->touches[0].state);

  view_->OnTouchEvent(&release);
  EXPECT_TRUE(release.synchronous_handling_disabled());
  EXPECT_EQ(nullptr, view_->touch_event_);
}

TEST_F(RenderWidgetHostViewAuraTest, PhysicalBackingSizeWithScale) {
  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  sink_->ClearMessages();
  view_->SetSize(gfx::Size(100, 100));
  EXPECT_EQ("100x100", view_->GetPhysicalBackingSize().ToString());
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_EQ(ViewMsg_Resize::ID, sink_->GetMessageAt(0)->type());
  {
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ("100x100", get<0>(params).new_size.ToString());  // dip size
    EXPECT_EQ("100x100",
        get<0>(params).physical_backing_size.ToString());  // backing size
  }

  widget_host_->ResetSizeAndRepaintPendingFlags();
  sink_->ClearMessages();

  aura_test_helper_->test_screen()->SetDeviceScaleFactor(2.0f);
  EXPECT_EQ("200x200", view_->GetPhysicalBackingSize().ToString());
  // Extra ScreenInfoChanged message for |parent_view_|.
  EXPECT_EQ(1u, sink_->message_count());
  {
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ(2.0f, get<0>(params).screen_info.deviceScaleFactor);
    EXPECT_EQ("100x100", get<0>(params).new_size.ToString());  // dip size
    EXPECT_EQ("200x200",
        get<0>(params).physical_backing_size.ToString());  // backing size
  }

  widget_host_->ResetSizeAndRepaintPendingFlags();
  sink_->ClearMessages();

  aura_test_helper_->test_screen()->SetDeviceScaleFactor(1.0f);
  // Extra ScreenInfoChanged message for |parent_view_|.
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_EQ("100x100", view_->GetPhysicalBackingSize().ToString());
  {
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ(1.0f, get<0>(params).screen_info.deviceScaleFactor);
    EXPECT_EQ("100x100", get<0>(params).new_size.ToString());  // dip size
    EXPECT_EQ("100x100",
        get<0>(params).physical_backing_size.ToString());  // backing size
  }
}

// Checks that InputMsg_CursorVisibilityChange IPC messages are dispatched
// to the renderer at the correct times.
TEST_F(RenderWidgetHostViewAuraTest, CursorVisibilityChange) {
  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(gfx::Size(100, 100));

  aura::test::TestCursorClient cursor_client(
      parent_view_->GetNativeView()->GetRootWindow());

  cursor_client.AddObserver(view_);

  // Expect a message the first time the cursor is shown.
  view_->WasShown();
  sink_->ClearMessages();
  cursor_client.ShowCursor();
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_TRUE(sink_->GetUniqueMessageMatching(
      InputMsg_CursorVisibilityChange::ID));

  // No message expected if the renderer already knows the cursor is visible.
  sink_->ClearMessages();
  cursor_client.ShowCursor();
  EXPECT_EQ(0u, sink_->message_count());

  // Hiding the cursor should send a message.
  sink_->ClearMessages();
  cursor_client.HideCursor();
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_TRUE(sink_->GetUniqueMessageMatching(
      InputMsg_CursorVisibilityChange::ID));

  // No message expected if the renderer already knows the cursor is invisible.
  sink_->ClearMessages();
  cursor_client.HideCursor();
  EXPECT_EQ(0u, sink_->message_count());

  // No messages should be sent while the view is invisible.
  view_->WasHidden();
  sink_->ClearMessages();
  cursor_client.ShowCursor();
  EXPECT_EQ(0u, sink_->message_count());
  cursor_client.HideCursor();
  EXPECT_EQ(0u, sink_->message_count());

  // Show the view. Since the cursor was invisible when the view was hidden,
  // no message should be sent.
  sink_->ClearMessages();
  view_->WasShown();
  EXPECT_FALSE(sink_->GetUniqueMessageMatching(
      InputMsg_CursorVisibilityChange::ID));

  // No message expected if the renderer already knows the cursor is invisible.
  sink_->ClearMessages();
  cursor_client.HideCursor();
  EXPECT_EQ(0u, sink_->message_count());

  // Showing the cursor should send a message.
  sink_->ClearMessages();
  cursor_client.ShowCursor();
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_TRUE(sink_->GetUniqueMessageMatching(
      InputMsg_CursorVisibilityChange::ID));

  // No messages should be sent while the view is invisible.
  view_->WasHidden();
  sink_->ClearMessages();
  cursor_client.HideCursor();
  EXPECT_EQ(0u, sink_->message_count());

  // Show the view. Since the cursor was visible when the view was hidden,
  // a message is expected to be sent.
  sink_->ClearMessages();
  view_->WasShown();
  EXPECT_TRUE(sink_->GetUniqueMessageMatching(
      InputMsg_CursorVisibilityChange::ID));

  cursor_client.RemoveObserver(view_);
}

TEST_F(RenderWidgetHostViewAuraTest, UpdateCursorIfOverSelf) {
  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());

  // Note that all coordinates in this test are screen coordinates.
  view_->SetBounds(gfx::Rect(60, 60, 100, 100));
  view_->Show();

  aura::test::TestCursorClient cursor_client(
      parent_view_->GetNativeView()->GetRootWindow());

  // Cursor is in the middle of the window.
  cursor_client.reset_calls_to_set_cursor();
  aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(110, 110));
  view_->UpdateCursorIfOverSelf();
  EXPECT_EQ(1, cursor_client.calls_to_set_cursor());

  // Cursor is near the top of the window.
  cursor_client.reset_calls_to_set_cursor();
  aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(80, 65));
  view_->UpdateCursorIfOverSelf();
  EXPECT_EQ(1, cursor_client.calls_to_set_cursor());

  // Cursor is near the bottom of the window.
  cursor_client.reset_calls_to_set_cursor();
  aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(159, 159));
  view_->UpdateCursorIfOverSelf();
  EXPECT_EQ(1, cursor_client.calls_to_set_cursor());

  // Cursor is above the window.
  cursor_client.reset_calls_to_set_cursor();
  aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(67, 59));
  view_->UpdateCursorIfOverSelf();
  EXPECT_EQ(0, cursor_client.calls_to_set_cursor());

  // Cursor is below the window.
  cursor_client.reset_calls_to_set_cursor();
  aura::Env::GetInstance()->set_last_mouse_location(gfx::Point(161, 161));
  view_->UpdateCursorIfOverSelf();
  EXPECT_EQ(0, cursor_client.calls_to_set_cursor());
}

scoped_ptr<cc::CompositorFrame> MakeDelegatedFrame(float scale_factor,
                                                   gfx::Size size,
                                                   gfx::Rect damage) {
  scoped_ptr<cc::CompositorFrame> frame(new cc::CompositorFrame);
  frame->metadata.device_scale_factor = scale_factor;
  frame->delegated_frame_data.reset(new cc::DelegatedFrameData);

  scoped_ptr<cc::RenderPass> pass = cc::RenderPass::Create();
  pass->SetNew(
      cc::RenderPassId(1, 1), gfx::Rect(size), damage, gfx::Transform());
  frame->delegated_frame_data->render_pass_list.push_back(pass.Pass());
  return frame.Pass();
}

// Resizing in fullscreen mode should send the up-to-date screen info.
// http://crbug.com/324350
TEST_F(RenderWidgetHostViewAuraTest, DISABLED_FullscreenResize) {
  aura::Window* root_window = aura_test_helper_->root_window();
  root_window->SetLayoutManager(new FullscreenLayoutManager(root_window));
  view_->InitAsFullscreen(parent_view_);
  view_->WasShown();
  widget_host_->ResetSizeAndRepaintPendingFlags();
  sink_->ClearMessages();

  // Call WasResized to flush the old screen info.
  view_->GetRenderWidgetHost()->WasResized();
  {
    // 0 is CreatingNew message.
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ("0,0 800x600",
              gfx::Rect(get<0>(params).screen_info.availableRect).ToString());
    EXPECT_EQ("800x600", get<0>(params).new_size.ToString());
    // Resizes are blocked until we swapped a frame of the correct size, and
    // we've committed it.
    view_->OnSwapCompositorFrame(
        0,
        MakeDelegatedFrame(
            1.f, get<0>(params).new_size, gfx::Rect(get<0>(params).new_size)));
    ui::DrawWaiterForTest::WaitForCommit(
        root_window->GetHost()->compositor());
  }

  widget_host_->ResetSizeAndRepaintPendingFlags();
  sink_->ClearMessages();

  // Make sure the corrent screen size is set along in the resize
  // request when the screen size has changed.
  aura_test_helper_->test_screen()->SetUIScale(0.5);
  EXPECT_EQ(1u, sink_->message_count());
  {
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ("0,0 1600x1200",
              gfx::Rect(get<0>(params).screen_info.availableRect).ToString());
    EXPECT_EQ("1600x1200", get<0>(params).new_size.ToString());
    view_->OnSwapCompositorFrame(
        0,
        MakeDelegatedFrame(
            1.f, get<0>(params).new_size, gfx::Rect(get<0>(params).new_size)));
    ui::DrawWaiterForTest::WaitForCommit(
        root_window->GetHost()->compositor());
  }
}

// Swapping a frame should notify the window.
TEST_F(RenderWidgetHostViewAuraTest, SwapNotifiesWindow) {
  gfx::Size view_size(100, 100);
  gfx::Rect view_rect(view_size);

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_size);
  view_->WasShown();

  MockWindowObserver observer;
  view_->window_->AddObserver(&observer);

  // Delegated renderer path
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, view_size, view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);

  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_,
                                               gfx::Rect(5, 5, 5, 5)));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, view_size, gfx::Rect(5, 5, 5, 5)));
  testing::Mock::VerifyAndClearExpectations(&observer);

  view_->window_->RemoveObserver(&observer);
}

// Recreating the layers for a window should cause Surface destruction to
// depend on both layers.
TEST_F(RenderWidgetHostViewAuraTest, RecreateLayers) {
  gfx::Size view_size(100, 100);
  gfx::Rect view_rect(view_size);

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(), parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_size);
  view_->WasShown();

  view_->OnSwapCompositorFrame(0,
                               MakeDelegatedFrame(1.f, view_size, view_rect));
  scoped_ptr<ui::LayerTreeOwner> cloned_owner(
      wm::RecreateLayers(view_->GetNativeView()));

  cc::SurfaceId id = view_->GetDelegatedFrameHost()->SurfaceIdForTesting();
  if (!id.is_null()) {
    ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
    cc::SurfaceManager* manager = factory->GetSurfaceManager();
    cc::Surface* surface = manager->GetSurfaceForId(id);
    EXPECT_TRUE(surface);
    // Should be a SurfaceSequence for both the original and new layers.
    EXPECT_EQ(2u, surface->GetDestructionDependencyCount());
  }
}

TEST_F(RenderWidgetHostViewAuraTest, Resize) {
  gfx::Size size1(100, 100);
  gfx::Size size2(200, 200);
  gfx::Size size3(300, 300);

  aura::Window* root_window = parent_view_->GetNativeView()->GetRootWindow();
  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(), root_window, gfx::Rect(size1));
  view_->WasShown();
  view_->SetSize(size1);
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, size1, gfx::Rect(size1)));
  ui::DrawWaiterForTest::WaitForCommit(
      root_window->GetHost()->compositor());
  ViewHostMsg_UpdateRect_Params update_params;
  update_params.view_size = size1;
  update_params.flags = ViewHostMsg_UpdateRect_Flags::IS_RESIZE_ACK;
  widget_host_->OnMessageReceived(
      ViewHostMsg_UpdateRect(widget_host_->GetRoutingID(), update_params));
  sink_->ClearMessages();
  // Resize logic is idle (no pending resize, no pending commit).
  EXPECT_EQ(size1.ToString(), view_->GetRequestedRendererSize().ToString());

  // Resize renderer, should produce a Resize message
  view_->SetSize(size2);
  EXPECT_EQ(size2.ToString(), view_->GetRequestedRendererSize().ToString());
  EXPECT_EQ(1u, sink_->message_count());
  {
    const IPC::Message* msg = sink_->GetMessageAt(0);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ(size2.ToString(), get<0>(params).new_size.ToString());
  }
  // Send resize ack to observe new Resize messages.
  update_params.view_size = size2;
  widget_host_->OnMessageReceived(
      ViewHostMsg_UpdateRect(widget_host_->GetRoutingID(), update_params));
  sink_->ClearMessages();

  // Resize renderer again, before receiving a frame. Should not produce a
  // Resize message.
  view_->SetSize(size3);
  EXPECT_EQ(size2.ToString(), view_->GetRequestedRendererSize().ToString());
  EXPECT_EQ(0u, sink_->message_count());

  // Receive a frame of the new size, should be skipped and not produce a Resize
  // message.
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, size3, gfx::Rect(size3)));
  // Expect the frame ack;
  EXPECT_EQ(1u, sink_->message_count());
  EXPECT_EQ(ViewMsg_SwapCompositorFrameAck::ID, sink_->GetMessageAt(0)->type());
  sink_->ClearMessages();
  EXPECT_EQ(size2.ToString(), view_->GetRequestedRendererSize().ToString());

  // Receive a frame of the correct size, should not be skipped and, and should
  // produce a Resize message after the commit.
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, size2, gfx::Rect(size2)));
  cc::SurfaceId surface_id = view_->surface_id();
  if (surface_id.is_null()) {
    // No frame ack yet.
    EXPECT_EQ(0u, sink_->message_count());
  } else {
    // Frame isn't desired size, so early ack.
    EXPECT_EQ(1u, sink_->message_count());
  }
  EXPECT_EQ(size2.ToString(), view_->GetRequestedRendererSize().ToString());

  // Wait for commit, then we should unlock the compositor and send a Resize
  // message (and a frame ack)
  ui::DrawWaiterForTest::WaitForCommit(
      root_window->GetHost()->compositor());
  EXPECT_EQ(size3.ToString(), view_->GetRequestedRendererSize().ToString());
  EXPECT_EQ(2u, sink_->message_count());
  EXPECT_EQ(ViewMsg_SwapCompositorFrameAck::ID,
            sink_->GetMessageAt(0)->type());
  {
    const IPC::Message* msg = sink_->GetMessageAt(1);
    EXPECT_EQ(ViewMsg_Resize::ID, msg->type());
    ViewMsg_Resize::Param params;
    ViewMsg_Resize::Read(msg, &params);
    EXPECT_EQ(size3.ToString(), get<0>(params).new_size.ToString());
  }
  update_params.view_size = size3;
  widget_host_->OnMessageReceived(
      ViewHostMsg_UpdateRect(widget_host_->GetRoutingID(), update_params));
  sink_->ClearMessages();
}

// Skipped frames should not drop their damage.
TEST_F(RenderWidgetHostViewAuraTest, SkippedDelegatedFrames) {
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size = view_rect.size();

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_rect.size());

  MockWindowObserver observer;
  view_->window_->AddObserver(&observer);

  // A full frame of damage.
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // A partial damage frame.
  gfx::Rect partial_view_rect(30, 30, 20, 20);
  EXPECT_CALL(observer,
              OnDelegatedFrameDamage(view_->window_, partial_view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, partial_view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // Lock the compositor. Now we should drop frames.
  view_rect = gfx::Rect(150, 150);
  view_->SetSize(view_rect.size());

  // This frame is dropped.
  gfx::Rect dropped_damage_rect_1(10, 20, 30, 40);
  EXPECT_CALL(observer, OnDelegatedFrameDamage(_, _)).Times(0);
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, dropped_damage_rect_1));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  gfx::Rect dropped_damage_rect_2(40, 50, 10, 20);
  EXPECT_CALL(observer, OnDelegatedFrameDamage(_, _)).Times(0);
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, dropped_damage_rect_2));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // Unlock the compositor. This frame should damage everything.
  frame_size = view_rect.size();

  gfx::Rect new_damage_rect(5, 6, 10, 10);
  EXPECT_CALL(observer,
              OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, new_damage_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // A partial damage frame, this should not be dropped.
  EXPECT_CALL(observer,
              OnDelegatedFrameDamage(view_->window_, partial_view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, partial_view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();


  // Resize to something empty.
  view_rect = gfx::Rect(100, 0);
  view_->SetSize(view_rect.size());

  // We're never expecting empty frames, resize to something non-empty.
  view_rect = gfx::Rect(100, 100);
  view_->SetSize(view_rect.size());

  // This frame should not be dropped.
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, view_rect.size(), view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  view_->window_->RemoveObserver(&observer);
}

TEST_F(RenderWidgetHostViewAuraTest, OutputSurfaceIdChange) {
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size = view_rect.size();

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_rect.size());

  MockWindowObserver observer;
  view_->window_->AddObserver(&observer);

  // Swap a frame.
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      0, MakeDelegatedFrame(1.f, frame_size, view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // Swap a frame with a different surface id.
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // Swap an empty frame, with a different surface id.
  view_->OnSwapCompositorFrame(
      2, MakeDelegatedFrame(1.f, gfx::Size(), gfx::Rect()));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  // Swap another frame, with a different surface id.
  EXPECT_CALL(observer, OnDelegatedFrameDamage(view_->window_, view_rect));
  view_->OnSwapCompositorFrame(3,
                               MakeDelegatedFrame(1.f, frame_size, view_rect));
  testing::Mock::VerifyAndClearExpectations(&observer);
  view_->RunOnCompositingDidCommit();

  view_->window_->RemoveObserver(&observer);
}

TEST_F(RenderWidgetHostViewAuraTest, DiscardDelegatedFrames) {
  size_t max_renderer_frames =
      RendererFrameManager::GetInstance()->GetMaxNumberOfSavedFrames();
  ASSERT_LE(2u, max_renderer_frames);
  size_t renderer_count = max_renderer_frames + 1;
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size = view_rect.size();
  DCHECK_EQ(0u, HostSharedBitmapManager::current()->AllocatedBitmapCount());

  scoped_ptr<RenderWidgetHostImpl * []> hosts(
      new RenderWidgetHostImpl* [renderer_count]);
  scoped_ptr<FakeRenderWidgetHostViewAura * []> views(
      new FakeRenderWidgetHostViewAura* [renderer_count]);

  // Create a bunch of renderers.
  for (size_t i = 0; i < renderer_count; ++i) {
    hosts[i] = new RenderWidgetHostImpl(
        &delegate_, process_host_, MSG_ROUTING_NONE, false);
    hosts[i]->Init();
    views[i] = new FakeRenderWidgetHostViewAura(hosts[i], false);
    views[i]->InitAsChild(NULL);
    aura::client::ParentWindowWithContext(
        views[i]->GetNativeView(),
        parent_view_->GetNativeView()->GetRootWindow(),
        gfx::Rect());
    views[i]->SetSize(view_rect.size());
  }

  // Make each renderer visible, and swap a frame on it, then make it invisible.
  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->WasShown();
    views[i]->OnSwapCompositorFrame(
        1, MakeDelegatedFrame(1.f, frame_size, view_rect));
    EXPECT_TRUE(views[i]->HasFrameData());
    views[i]->WasHidden();
  }

  // There should be max_renderer_frames with a frame in it, and one without it.
  // Since the logic is LRU eviction, the first one should be without.
  EXPECT_FALSE(views[0]->HasFrameData());
  for (size_t i = 1; i < renderer_count; ++i)
    EXPECT_TRUE(views[i]->HasFrameData());

  // LRU renderer is [0], make it visible, it shouldn't evict anything yet.
  views[0]->WasShown();
  EXPECT_FALSE(views[0]->HasFrameData());
  EXPECT_TRUE(views[1]->HasFrameData());
  // Since [0] doesn't have a frame, it should be waiting for the renderer to
  // give it one.
  EXPECT_TRUE(views[0]->released_front_lock_active());

  // Swap a frame on it, it should evict the next LRU [1].
  views[0]->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  EXPECT_TRUE(views[0]->HasFrameData());
  EXPECT_FALSE(views[1]->HasFrameData());
  // Now that [0] got a frame, it shouldn't be waiting any more.
  EXPECT_FALSE(views[0]->released_front_lock_active());
  views[0]->WasHidden();

  // LRU renderer is [1], still hidden. Swap a frame on it, it should evict
  // the next LRU [2].
  views[1]->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  EXPECT_TRUE(views[0]->HasFrameData());
  EXPECT_TRUE(views[1]->HasFrameData());
  EXPECT_FALSE(views[2]->HasFrameData());
  for (size_t i = 3; i < renderer_count; ++i)
    EXPECT_TRUE(views[i]->HasFrameData());

  // Make all renderers but [0] visible and swap a frame on them, keep [0]
  // hidden, it becomes the LRU.
  for (size_t i = 1; i < renderer_count; ++i) {
    views[i]->WasShown();
    // The renderers who don't have a frame should be waiting. The ones that
    // have a frame should not.
    // In practice, [1] has a frame, but anything after has its frame evicted.
    EXPECT_EQ(!views[i]->HasFrameData(),
              views[i]->released_front_lock_active());
    views[i]->OnSwapCompositorFrame(
        1, MakeDelegatedFrame(1.f, frame_size, view_rect));
    // Now everyone has a frame.
    EXPECT_FALSE(views[i]->released_front_lock_active());
    EXPECT_TRUE(views[i]->HasFrameData());
  }
  EXPECT_FALSE(views[0]->HasFrameData());

  // Swap a frame on [0], it should be evicted immediately.
  views[0]->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  EXPECT_FALSE(views[0]->HasFrameData());

  // Make [0] visible, and swap a frame on it. Nothing should be evicted
  // although we're above the limit.
  views[0]->WasShown();
  // We don't have a frame, wait.
  EXPECT_TRUE(views[0]->released_front_lock_active());
  views[0]->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  EXPECT_FALSE(views[0]->released_front_lock_active());
  for (size_t i = 0; i < renderer_count; ++i)
    EXPECT_TRUE(views[i]->HasFrameData());

  // Make [0] hidden, it should evict its frame.
  views[0]->WasHidden();
  EXPECT_FALSE(views[0]->HasFrameData());

  // Make [0] visible, don't give it a frame, it should be waiting.
  views[0]->WasShown();
  EXPECT_TRUE(views[0]->released_front_lock_active());
  // Make [0] hidden, it should stop waiting.
  views[0]->WasHidden();
  EXPECT_FALSE(views[0]->released_front_lock_active());

  // Make [1] hidden, resize it. It should drop its frame.
  views[1]->WasHidden();
  EXPECT_TRUE(views[1]->HasFrameData());
  gfx::Size size2(200, 200);
  views[1]->SetSize(size2);
  EXPECT_FALSE(views[1]->HasFrameData());
  // Show it, it should block until we give it a frame.
  views[1]->WasShown();
  EXPECT_TRUE(views[1]->released_front_lock_active());
  views[1]->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, size2, gfx::Rect(size2)));
  EXPECT_FALSE(views[1]->released_front_lock_active());

  for (size_t i = 0; i < renderer_count - 1; ++i)
    views[i]->WasHidden();

  // Allocate enough bitmaps so that two frames (proportionally) would be
  // enough hit the handle limit.
  int handles_per_frame = 5;
  RendererFrameManager::GetInstance()->set_max_handles(handles_per_frame * 2);

  for (size_t i = 0; i < (renderer_count - 1) * handles_per_frame; i++) {
    HostSharedBitmapManager::current()->ChildAllocatedSharedBitmap(
        1,
        base::SharedMemory::NULLHandle(),
        base::GetCurrentProcessHandle(),
        cc::SharedBitmap::GenerateId());
  }

  // Hiding this last bitmap should evict all but two frames.
  views[renderer_count - 1]->WasHidden();
  for (size_t i = 0; i < renderer_count; ++i) {
    if (i + 2 < renderer_count)
      EXPECT_FALSE(views[i]->HasFrameData());
    else
      EXPECT_TRUE(views[i]->HasFrameData());
  }
  HostSharedBitmapManager::current()->ProcessRemoved(
      base::GetCurrentProcessHandle());
  RendererFrameManager::GetInstance()->set_max_handles(
      base::SharedMemory::GetHandleLimit());

  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->Destroy();
    delete hosts[i];
  }
}

TEST_F(RenderWidgetHostViewAuraTest, DiscardDelegatedFramesWithLocking) {
  size_t max_renderer_frames =
      RendererFrameManager::GetInstance()->GetMaxNumberOfSavedFrames();
  ASSERT_LE(2u, max_renderer_frames);
  size_t renderer_count = max_renderer_frames + 1;
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size = view_rect.size();
  DCHECK_EQ(0u, HostSharedBitmapManager::current()->AllocatedBitmapCount());

  scoped_ptr<RenderWidgetHostImpl * []> hosts(
      new RenderWidgetHostImpl* [renderer_count]);
  scoped_ptr<FakeRenderWidgetHostViewAura * []> views(
      new FakeRenderWidgetHostViewAura* [renderer_count]);

  // Create a bunch of renderers.
  for (size_t i = 0; i < renderer_count; ++i) {
    hosts[i] = new RenderWidgetHostImpl(
        &delegate_, process_host_, MSG_ROUTING_NONE, false);
    hosts[i]->Init();
    views[i] = new FakeRenderWidgetHostViewAura(hosts[i], false);
    views[i]->InitAsChild(NULL);
    aura::client::ParentWindowWithContext(
        views[i]->GetNativeView(),
        parent_view_->GetNativeView()->GetRootWindow(),
        gfx::Rect());
    views[i]->SetSize(view_rect.size());
  }

  // Make each renderer visible and swap a frame on it. No eviction should
  // occur because all frames are visible.
  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->WasShown();
    views[i]->OnSwapCompositorFrame(
        1, MakeDelegatedFrame(1.f, frame_size, view_rect));
    EXPECT_TRUE(views[i]->HasFrameData());
  }

  // If we hide [0], then [0] should be evicted.
  views[0]->WasHidden();
  EXPECT_FALSE(views[0]->HasFrameData());

  // If we lock [0] before hiding it, then [0] should not be evicted.
  views[0]->WasShown();
  views[0]->OnSwapCompositorFrame(
        1, MakeDelegatedFrame(1.f, frame_size, view_rect));
  EXPECT_TRUE(views[0]->HasFrameData());
  views[0]->GetDelegatedFrameHost()->LockResources();
  views[0]->WasHidden();
  EXPECT_TRUE(views[0]->HasFrameData());

  // If we unlock [0] now, then [0] should be evicted.
  views[0]->GetDelegatedFrameHost()->UnlockResources();
  EXPECT_FALSE(views[0]->HasFrameData());

  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->Destroy();
    delete hosts[i];
  }
}

// Test that changing the memory pressure should delete saved frames. This test
// only applies to ChromeOS.
TEST_F(RenderWidgetHostViewAuraTest, DiscardDelegatedFramesWithMemoryPressure) {
  size_t max_renderer_frames =
      RendererFrameManager::GetInstance()->GetMaxNumberOfSavedFrames();
  ASSERT_LE(2u, max_renderer_frames);
  size_t renderer_count = max_renderer_frames;
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size = view_rect.size();
  DCHECK_EQ(0u, HostSharedBitmapManager::current()->AllocatedBitmapCount());

  scoped_ptr<RenderWidgetHostImpl * []> hosts(
      new RenderWidgetHostImpl* [renderer_count]);
  scoped_ptr<FakeRenderWidgetHostViewAura * []> views(
      new FakeRenderWidgetHostViewAura* [renderer_count]);

  // Create a bunch of renderers.
  for (size_t i = 0; i < renderer_count; ++i) {
    hosts[i] = new RenderWidgetHostImpl(
        &delegate_, process_host_, MSG_ROUTING_NONE, false);
    hosts[i]->Init();
    views[i] = new FakeRenderWidgetHostViewAura(hosts[i], false);
    views[i]->InitAsChild(NULL);
    aura::client::ParentWindowWithContext(
        views[i]->GetNativeView(),
        parent_view_->GetNativeView()->GetRootWindow(),
        gfx::Rect());
    views[i]->SetSize(view_rect.size());
  }

  // Make each renderer visible and swap a frame on it. No eviction should
  // occur because all frames are visible.
  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->WasShown();
    views[i]->OnSwapCompositorFrame(
        1, MakeDelegatedFrame(1.f, frame_size, view_rect));
    EXPECT_TRUE(views[i]->HasFrameData());
  }

  // If we hide one, it should not get evicted.
  views[0]->WasHidden();
  message_loop_.RunUntilIdle();
  EXPECT_TRUE(views[0]->HasFrameData());
  // Using a lesser memory pressure event however, should evict.
  SimulateMemoryPressure(
      base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
  message_loop_.RunUntilIdle();
  EXPECT_FALSE(views[0]->HasFrameData());

  // Check the same for a higher pressure event.
  views[1]->WasHidden();
  message_loop_.RunUntilIdle();
  EXPECT_TRUE(views[1]->HasFrameData());
  SimulateMemoryPressure(
      base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
  message_loop_.RunUntilIdle();
  EXPECT_FALSE(views[1]->HasFrameData());

  for (size_t i = 0; i < renderer_count; ++i) {
    views[i]->Destroy();
    delete hosts[i];
  }
}

TEST_F(RenderWidgetHostViewAuraTest, SoftwareDPIChange) {
  gfx::Rect view_rect(100, 100);
  gfx::Size frame_size(100, 100);

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_rect.size());
  view_->WasShown();

  // With a 1x DPI UI and 1x DPI Renderer.
  view_->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, frame_size, gfx::Rect(frame_size)));

  // Save the frame provider.
  scoped_refptr<cc::DelegatedFrameProvider> frame_provider =
      view_->frame_provider();
  cc::SurfaceId surface_id = view_->surface_id();

  // This frame will have the same number of physical pixels, but has a new
  // scale on it.
  view_->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(2.f, frame_size, gfx::Rect(frame_size)));

  // When we get a new frame with the same frame size in physical pixels, but a
  // different scale, we should generate a new frame provider, as the final
  // result will need to be scaled differently to the screen.
  if (frame_provider.get())
    EXPECT_NE(frame_provider.get(), view_->frame_provider());
  else
    EXPECT_NE(surface_id, view_->surface_id());
}

class RenderWidgetHostViewAuraCopyRequestTest
    : public RenderWidgetHostViewAuraShutdownTest {
 public:
  RenderWidgetHostViewAuraCopyRequestTest()
      : callback_count_(0), result_(false) {}

  void CallbackMethod(const base::Closure& quit_closure, bool result) {
    result_ = result;
    callback_count_++;
    quit_closure.Run();
  }

  int callback_count_;
  bool result_;

 private:
  DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAuraCopyRequestTest);
};

TEST_F(RenderWidgetHostViewAuraCopyRequestTest, DestroyedAfterCopyRequest) {
  base::RunLoop run_loop;

  gfx::Rect view_rect(100, 100);
  scoped_ptr<cc::CopyOutputRequest> request;

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_rect.size());
  view_->WasShown();

  scoped_ptr<FakeFrameSubscriber> frame_subscriber(new FakeFrameSubscriber(
      view_rect.size(),
      base::Bind(&RenderWidgetHostViewAuraCopyRequestTest::CallbackMethod,
                 base::Unretained(this),
                 run_loop.QuitClosure())));

  EXPECT_EQ(0, callback_count_);
  EXPECT_FALSE(view_->last_copy_request_);

  view_->BeginFrameSubscription(frame_subscriber.Pass());
  view_->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, view_rect.size(), gfx::Rect(view_rect)));

  EXPECT_EQ(0, callback_count_);
  EXPECT_TRUE(view_->last_copy_request_);
  EXPECT_TRUE(view_->last_copy_request_->has_texture_mailbox());
  request = view_->last_copy_request_.Pass();

  // Send back the mailbox included in the request. There's no release callback
  // since the mailbox came from the RWHVA originally.
  request->SendTextureResult(view_rect.size(),
                             request->texture_mailbox(),
                             scoped_ptr<cc::SingleReleaseCallback>());

  // This runs until the callback happens.
  run_loop.Run();

  // The callback should succeed.
  EXPECT_EQ(1, callback_count_);
  EXPECT_TRUE(result_);

  view_->OnSwapCompositorFrame(
      1, MakeDelegatedFrame(1.f, view_rect.size(), gfx::Rect(view_rect)));

  EXPECT_EQ(1, callback_count_);
  request = view_->last_copy_request_.Pass();

  // Destroy the RenderWidgetHostViewAura and ImageTransportFactory.
  TearDownEnvironment();

  // Send back the mailbox included in the request. There's no release callback
  // since the mailbox came from the RWHVA originally.
  request->SendTextureResult(view_rect.size(),
                             request->texture_mailbox(),
                             scoped_ptr<cc::SingleReleaseCallback>());

  // Because the copy request callback may be holding state within it, that
  // state must handle the RWHVA and ImageTransportFactory going away before the
  // callback is called. This test passes if it does not crash as a result of
  // these things being destroyed.
  EXPECT_EQ(2, callback_count_);
  EXPECT_FALSE(result_);
}

TEST_F(RenderWidgetHostViewAuraTest, VisibleViewportTest) {
  gfx::Rect view_rect(100, 100);

  view_->InitAsChild(NULL);
  aura::client::ParentWindowWithContext(
      view_->GetNativeView(),
      parent_view_->GetNativeView()->GetRootWindow(),
      gfx::Rect());
  view_->SetSize(view_rect.size());
  view_->WasShown();

  // Defaults to full height of the view.
  EXPECT_EQ(100, view_->GetVisibleViewportSize().height());

  widget_host_->ResetSizeAndRepaintPendingFlags();
  sink_->ClearMessages();
  view_->SetInsets(gfx::Insets(0, 0, 40, 0));

  EXPECT_EQ(60, view_->GetVisibleViewportSize().height());

  const IPC::Message *message = sink_->GetFirstMessageMatching(
      ViewMsg_Resize::ID);
  ASSERT_TRUE(message != NULL);

  ViewMsg_Resize::Param params;
  ViewMsg_Resize::Read(message, &params);
  EXPECT_EQ(60, get<0>(params).visible_viewport_size.height());
}

// Ensures that touch event positions are never truncated to integers.
TEST_F(RenderWidgetHostViewAuraTest, TouchEventPositionsArentRounded) {
  const float kX = 30.58f;
  const float kY = 50.23f;

  view_->InitAsChild(NULL);
  view_->Show();

  ui::TouchEvent press(ui::ET_TOUCH_PRESSED,
                       gfx::PointF(kX, kY),
                       0,
                       ui::EventTimeForNow());

  view_->OnTouchEvent(&press);
  EXPECT_EQ(blink::WebInputEvent::TouchStart, view_->touch_event_->type);
  EXPECT_TRUE(view_->touch_event_->cancelable);
  EXPECT_EQ(1U, view_->touch_event_->touchesLength);
  EXPECT_EQ(blink::WebTouchPoint::StatePressed,
            view_->touch_event_->touches[0].state);
  EXPECT_EQ(kX, view_->touch_event_->touches[0].screenPosition.x);
  EXPECT_EQ(kX, view_->touch_event_->touches[0].position.x);
  EXPECT_EQ(kY, view_->touch_event_->touches[0].screenPosition.y);
  EXPECT_EQ(kY, view_->touch_event_->touches[0].position.y);
}

// Tests that scroll ACKs are correctly handled by the overscroll-navigation
// controller.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, WheelScrollEventOverscrolls) {
  SetUpOverscrollEnvironment();

  // Simulate wheel events.
  SimulateWheelEvent(-5, 0, 0, true);    // sent directly
  SimulateWheelEvent(-1, 1, 0, true);    // enqueued
  SimulateWheelEvent(-10, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-15, -1, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-30, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-20, 6, 1, true);   // enqueued, different modifiers
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK the first wheel event as not processed.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK for the second (coalesced) event as not processed. This will
  // start a back navigation. However, this will also cause the queued next
  // event to be sent to the renderer. But since overscroll navigation has
  // started, that event will also be included in the overscroll computation
  // instead of being sent to the renderer. So the result will be an overscroll
  // back navigation, and no event will be sent to the renderer.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_delegate()->current_mode());
  EXPECT_EQ(-81.f, overscroll_delta_x());
  EXPECT_EQ(-31.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(0U, sink_->message_count());

  // Send a mouse-move event. This should cancel the overscroll navigation.
  SimulateMouseMove(5, 10, 0);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

// Tests that if some scroll events are consumed towards the start, then
// subsequent scrolls do not horizontal overscroll.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       WheelScrollConsumedDoNotHorizOverscroll) {
  SetUpOverscrollEnvironment();

  // Simulate wheel events.
  SimulateWheelEvent(-5, 0, 0, true);    // sent directly
  SimulateWheelEvent(-1, -1, 0, true);   // enqueued
  SimulateWheelEvent(-10, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-15, -1, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-30, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-20, 6, 1, true);   // enqueued, different modifiers
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK the first wheel event as processed.
  SendInputEventACK(WebInputEvent::MouseWheel, INPUT_EVENT_ACK_STATE_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK for the second (coalesced) event as not processed. This should
  // not initiate overscroll, since the beginning of the scroll has been
  // consumed. The queued event with different modifiers should be sent to the
  // renderer.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());

  // Indicate the end of the scrolling from the touchpad.
  SimulateGestureFlingStartEvent(-1200.f, 0.f, blink::WebGestureDeviceTouchpad);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Start another scroll. This time, do not consume any scroll events.
  SimulateWheelEvent(0, -5, 0, true);    // sent directly
  SimulateWheelEvent(0, -1, 0, true);    // enqueued
  SimulateWheelEvent(-10, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-15, -1, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-30, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-20, 6, 1, true);   // enqueued, different modifiers
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK for the first wheel and the subsequent coalesced event as not
  // processed. This should start a back-overscroll.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
}

// Tests that wheel-scrolling correctly turns overscroll on and off.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, WheelScrollOverscrollToggle) {
  SetUpOverscrollEnvironment();

  // Send a wheel event. ACK the event as not processed. This should not
  // initiate an overscroll gesture since it doesn't cross the threshold yet.
  SimulateWheelEvent(10, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Scroll some more so as to not overscroll.
  SimulateWheelEvent(10, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Scroll some more to initiate an overscroll.
  SimulateWheelEvent(40, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(60.f, overscroll_delta_x());
  EXPECT_EQ(10.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Scroll in the reverse direction enough to abort the overscroll.
  SimulateWheelEvent(-20, 0, 0, true);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  // Continue to scroll in the reverse direction.
  SimulateWheelEvent(-20, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Continue to scroll in the reverse direction enough to initiate overscroll
  // in that direction.
  SimulateWheelEvent(-55, 0, 0, true);
  EXPECT_EQ(1U, sink_->message_count());
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_delegate()->current_mode());
  EXPECT_EQ(-75.f, overscroll_delta_x());
  EXPECT_EQ(-25.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
}

TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       ScrollEventsOverscrollWithFling) {
  SetUpOverscrollEnvironment();

  // Send a wheel event. ACK the event as not processed. This should not
  // initiate an overscroll gesture since it doesn't cross the threshold yet.
  SimulateWheelEvent(10, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Scroll some more so as to not overscroll.
  SimulateWheelEvent(20, 0, 0, true);
  EXPECT_EQ(1U, sink_->message_count());
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  sink_->ClearMessages();

  // Scroll some more to initiate an overscroll.
  SimulateWheelEvent(30, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(60.f, overscroll_delta_x());
  EXPECT_EQ(10.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send a fling start, but with a small velocity, so that the overscroll is
  // aborted. The fling should proceed to the renderer, through the gesture
  // event filter.
  SimulateGestureFlingStartEvent(0.f, 0.1f, blink::WebGestureDeviceTouchpad);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

// Same as ScrollEventsOverscrollWithFling, but with zero velocity. Checks that
// the zero-velocity fling does not reach the renderer.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       ScrollEventsOverscrollWithZeroFling) {
  SetUpOverscrollEnvironment();

  // Send a wheel event. ACK the event as not processed. This should not
  // initiate an overscroll gesture since it doesn't cross the threshold yet.
  SimulateWheelEvent(10, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Scroll some more so as to not overscroll.
  SimulateWheelEvent(20, 0, 0, true);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  // Scroll some more to initiate an overscroll.
  SimulateWheelEvent(30, 0, 0, true);
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(60.f, overscroll_delta_x());
  EXPECT_EQ(10.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send a fling start, but with a small velocity, so that the overscroll is
  // aborted. The fling should proceed to the renderer, through the gesture
  // event filter.
  SimulateGestureFlingStartEvent(10.f, 0.f, blink::WebGestureDeviceTouchpad);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

// Tests that a fling in the opposite direction of the overscroll cancels the
// overscroll nav instead of completing it.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, ReverseFlingCancelsOverscroll) {
  SetUpOverscrollEnvironment();

  {
    // Start and end a gesture in the same direction without processing the
    // gesture events in the renderer. This should initiate and complete an
    // overscroll navigation.
    SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                         blink::WebGestureDeviceTouchscreen);
    SimulateGestureScrollUpdateEvent(300, -5, 0);
    SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                      INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
    EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
    EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
    sink_->ClearMessages();

    SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                         blink::WebGestureDeviceTouchscreen);
    EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->completed_mode());
    EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
    EXPECT_EQ(1U, sink_->message_count());
  }

  {
    // Start over, except instead of ending the gesture with ScrollEnd, end it
    // with a FlingStart, with velocity in the reverse direction. This should
    // initiate an overscroll navigation, but it should be cancelled because of
    // the fling in the opposite direction.
    overscroll_delegate()->Reset();
    SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                         blink::WebGestureDeviceTouchscreen);
    SimulateGestureScrollUpdateEvent(-300, -5, 0);
    SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                      INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
    EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
    EXPECT_EQ(OVERSCROLL_WEST, overscroll_delegate()->current_mode());
    sink_->ClearMessages();

    SimulateGestureFlingStartEvent(100, 0, blink::WebGestureDeviceTouchscreen);
    EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->completed_mode());
    EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
    EXPECT_EQ(1U, sink_->message_count());
  }
}

// Tests that touch-scroll events are handled correctly by the overscroll
// controller. This also tests that the overscroll controller and the
// gesture-event filter play nice with each other.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, GestureScrollOverscrolls) {
  SetUpOverscrollEnvironment();

  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send another gesture event and ACK as not being processed. This should
  // initiate the navigation gesture.
  SimulateGestureScrollUpdateEvent(55, -5, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(55.f, overscroll_delta_x());
  EXPECT_EQ(-5.f, overscroll_delta_y());
  EXPECT_EQ(5.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(-5.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send another gesture update event. This event should be consumed by the
  // controller, and not be forwarded to the renderer. The gesture-event filter
  // should not also receive this event.
  SimulateGestureScrollUpdateEvent(10, -5, 0);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(65.f, overscroll_delta_x());
  EXPECT_EQ(-10.f, overscroll_delta_y());
  EXPECT_EQ(15.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(-10.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(0U, sink_->message_count());

  // Now send a scroll end. This should cancel the overscroll gesture, and send
  // the event to the renderer. The gesture-event filter should receive this
  // event.
  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

// Tests that if the page is scrolled because of a scroll-gesture, then that
// particular scroll sequence never generates overscroll if the scroll direction
// is horizontal.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       GestureScrollConsumedHorizontal) {
  SetUpOverscrollEnvironment();

  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  SimulateGestureScrollUpdateEvent(10, 0, 0);

  // Start scrolling on content. ACK both events as being processed.
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  sink_->ClearMessages();

  // Send another gesture event and ACK as not being processed. This should
  // not initiate overscroll because the beginning of the scroll event did
  // scroll some content on the page. Since there was no overscroll, the event
  // should reach the renderer.
  SimulateGestureScrollUpdateEvent(55, 0, 0);
  EXPECT_EQ(1U, sink_->message_count());
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
}

// Tests that the overscroll controller plays nice with touch-scrolls and the
// gesture event filter with debounce filtering turned on.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       GestureScrollDebounceOverscrolls) {
  SetUpOverscrollEnvironmentWithDebounce(100);

  // Start scrolling. Receive ACK as it being processed.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send update events.
  SimulateGestureScrollUpdateEvent(25, 0, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Quickly end and restart the scroll gesture. These two events should get
  // discarded.
  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(0U, sink_->message_count());

  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(0U, sink_->message_count());

  // Send another update event. This should get into the queue.
  SimulateGestureScrollUpdateEvent(30, 0, 0);
  EXPECT_EQ(0U, sink_->message_count());

  // Receive an ACK for the first scroll-update event as not being processed.
  // This will contribute to the overscroll gesture, but not enough for the
  // overscroll controller to start consuming gesture events. This also cause
  // the queued gesture event to be forwarded to the renderer.
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send another update event. This should get into the queue.
  SimulateGestureScrollUpdateEvent(10, 0, 0);
  EXPECT_EQ(0U, sink_->message_count());

  // Receive an ACK for the second scroll-update event as not being processed.
  // This will now initiate an overscroll. This will also cause the queued
  // gesture event to be released. But instead of going to the renderer, it will
  // be consumed by the overscroll controller.
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(65.f, overscroll_delta_x());
  EXPECT_EQ(15.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(0U, sink_->message_count());
}

// Tests that the gesture debounce timer plays nice with the overscroll
// controller.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       GestureScrollDebounceTimerOverscroll) {
  SetUpOverscrollEnvironmentWithDebounce(10);

  // Start scrolling. Receive ACK as it being processed.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send update events.
  SimulateGestureScrollUpdateEvent(55, 0, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send an end event. This should get in the debounce queue.
  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(0U, sink_->message_count());

  // Receive ACK for the scroll-update event.
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(55.f, overscroll_delta_x());
  EXPECT_EQ(5.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(0U, sink_->message_count());

  // Let the timer for the debounce queue fire. That should release the queued
  // scroll-end event. Since overscroll has started, but there hasn't been
  // enough overscroll to complete the gesture, the overscroll controller
  // will reset the state. The scroll-end should therefore be dispatched to the
  // renderer, and the gesture-event-filter should await an ACK for it.
  base::MessageLoop::current()->PostDelayedTask(
      FROM_HERE,
      base::MessageLoop::QuitClosure(),
      base::TimeDelta::FromMilliseconds(15));
  base::MessageLoop::current()->Run();

  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

// Tests that when touch-events are dispatched to the renderer, the overscroll
// gesture deals with them correctly.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, OverscrollWithTouchEvents) {
  SetUpOverscrollEnvironmentWithDebounce(10);
  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, true));
  sink_->ClearMessages();

  // The test sends an intermingled sequence of touch and gesture events.
  PressTouchPoint(0, 1);
  SendInputEventACK(WebInputEvent::TouchStart,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  MoveTouchPoint(0, 20, 5);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SendInputEventACK(WebInputEvent::TouchMove,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);

  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SimulateGestureScrollUpdateEvent(20, 0, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  // Another touch move event should reach the renderer since overscroll hasn't
  // started yet.  Note that touch events sent during the scroll period may
  // not require an ack (having been marked uncancelable).
  MoveTouchPoint(0, 65, 10);
  AckLastSentInputEventIfNecessary(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SimulateGestureScrollUpdateEvent(45, 0, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(65.f, overscroll_delta_x());
  EXPECT_EQ(15.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send another touch event. The page should get the touch-move event, even
  // though overscroll has started.
  MoveTouchPoint(0, 55, 5);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(65.f, overscroll_delta_x());
  EXPECT_EQ(15.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  AckLastSentInputEventIfNecessary(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SimulateGestureScrollUpdateEvent(-10, 0, 0);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(55.f, overscroll_delta_x());
  EXPECT_EQ(5.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());

  PressTouchPoint(255, 5);
  AckLastSentInputEventIfNecessary(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SimulateGestureScrollUpdateEvent(200, 0, 0);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(255.f, overscroll_delta_x());
  EXPECT_EQ(205.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());

  // The touch-end/cancel event should always reach the renderer if the page has
  // touch handlers.
  ReleaseTouchPoint(1);
  AckLastSentInputEventIfNecessary(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  ReleaseTouchPoint(0);
  AckLastSentInputEventIfNecessary(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SimulateGestureEvent(blink::WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  base::MessageLoop::current()->PostDelayedTask(
      FROM_HERE,
      base::MessageLoop::QuitClosure(),
      base::TimeDelta::FromMilliseconds(10));
  base::MessageLoop::current()->Run();
  EXPECT_EQ(1U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->completed_mode());
}

// Tests that touch-gesture end is dispatched to the renderer at the end of a
// touch-gesture initiated overscroll.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       TouchGestureEndDispatchedAfterOverscrollComplete) {
  SetUpOverscrollEnvironmentWithDebounce(10);
  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, true));
  sink_->ClearMessages();

  // Start scrolling. Receive ACK as it being processed.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  // The scroll begin event will have received a synthetic ack from the input
  // router.
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  // Send update events.
  SimulateGestureScrollUpdateEvent(55, -5, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(55.f, overscroll_delta_x());
  EXPECT_EQ(5.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(-5.f, overscroll_delegate()->delta_y());

  // Send end event.
  SimulateGestureEvent(blink::WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(0U, sink_->message_count());
  base::MessageLoop::current()->PostDelayedTask(
      FROM_HERE,
      base::MessageLoop::QuitClosure(),
      base::TimeDelta::FromMilliseconds(10));
  base::MessageLoop::current()->Run();
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->completed_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Start scrolling. Receive ACK as it being processed.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  // Send update events.
  SimulateGestureScrollUpdateEvent(235, -5, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());

  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(0U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(235.f, overscroll_delta_x());
  EXPECT_EQ(185.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(-5.f, overscroll_delegate()->delta_y());

  // Send end event.
  SimulateGestureEvent(blink::WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(0U, sink_->message_count());
  base::MessageLoop::current()->PostDelayedTask(
      FROM_HERE,
      base::MessageLoop::QuitClosure(),
      base::TimeDelta::FromMilliseconds(10));
  base::MessageLoop::current()->Run();
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->completed_mode());
  EXPECT_EQ(1U, sink_->message_count());
}

TEST_F(RenderWidgetHostViewAuraOverscrollTest, OverscrollDirectionChange) {
  SetUpOverscrollEnvironmentWithDebounce(100);

  // Start scrolling. Receive ACK as it being processed.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Send update events and receive ack as not consumed.
  SimulateGestureScrollUpdateEvent(125, -5, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(0U, sink_->message_count());

  // Send another update event, but in the reverse direction. The overscroll
  // controller will not consume the event, because it is not triggering
  // gesture-nav.
  SimulateGestureScrollUpdateEvent(-260, 0, 0);
  EXPECT_EQ(1U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());

  // Since the overscroll mode has been reset, the next scroll update events
  // should reach the renderer.
  SimulateGestureScrollUpdateEvent(-20, 0, 0);
  EXPECT_EQ(1U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
}

TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       OverscrollDirectionChangeMouseWheel) {
  SetUpOverscrollEnvironment();

  // Send wheel event and receive ack as not consumed.
  SimulateWheelEvent(125, -5, 0, true);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(0U, sink_->message_count());

  // Send another wheel event, but in the reverse direction. The overscroll
  // controller will not consume the event, because it is not triggering
  // gesture-nav.
  SimulateWheelEvent(-260, 0, 0, true);
  EXPECT_EQ(1U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());

  // Since the overscroll mode has been reset, the next wheel event should reach
  // the renderer.
  SimulateWheelEvent(-20, 0, 0, true);
  EXPECT_EQ(1U, sink_->message_count());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
}

// Tests that if a mouse-move event completes the overscroll gesture, future
// move events do reach the renderer.
TEST_F(RenderWidgetHostViewAuraOverscrollTest, OverscrollMouseMoveCompletion) {
  SetUpOverscrollEnvironment();

  SimulateWheelEvent(5, 0, 0, true);     // sent directly
  SimulateWheelEvent(-1, 0, 0, true);    // enqueued
  SimulateWheelEvent(-10, -3, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-15, -1, 0, true);  // coalesced into previous event
  SimulateWheelEvent(-30, -3, 0, true);  // coalesced into previous event
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK the first wheel event as not processed.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Receive ACK for the second (coalesced) event as not processed. This will
  // start an overcroll gesture.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_delegate()->current_mode());
  EXPECT_EQ(0U, sink_->message_count());

  // Send a mouse-move event. This should cancel the overscroll navigation
  // (since the amount overscrolled is not above the threshold), and so the
  // mouse-move should reach the renderer.
  SimulateMouseMove(5, 10, 0);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->completed_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SendInputEventACK(WebInputEvent::MouseMove,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);

  // Moving the mouse more should continue to send the events to the renderer.
  SimulateMouseMove(5, 10, 0);
  SendInputEventACK(WebInputEvent::MouseMove,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Now try with gestures.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  SimulateGestureScrollUpdateEvent(300, -5, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  sink_->ClearMessages();

  // Overscroll gesture is in progress. Send a mouse-move now. This should
  // complete the gesture (because the amount overscrolled is above the
  // threshold).
  SimulateMouseMove(5, 10, 0);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->completed_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
  SendInputEventACK(WebInputEvent::MouseMove,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);

  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Move mouse some more. The mouse-move events should reach the renderer.
  SimulateMouseMove(5, 10, 0);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SendInputEventACK(WebInputEvent::MouseMove,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
}

// Tests that if a page scrolled, then the overscroll controller's states are
// reset after the end of the scroll.
TEST_F(RenderWidgetHostViewAuraOverscrollTest,
       OverscrollStateResetsAfterScroll) {
  SetUpOverscrollEnvironment();

  SimulateWheelEvent(0, 5, 0, true);   // sent directly
  SimulateWheelEvent(0, 30, 0, true);  // enqueued
  SimulateWheelEvent(0, 40, 0, true);  // coalesced into previous event
  SimulateWheelEvent(0, 10, 0, true);  // coalesced into previous event
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // The first wheel event is consumed. Dispatches the queued wheel event.
  SendInputEventACK(WebInputEvent::MouseWheel, INPUT_EVENT_ACK_STATE_CONSUMED);
  EXPECT_TRUE(ScrollStateIsContentScrolling());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // The second wheel event is consumed.
  SendInputEventACK(WebInputEvent::MouseWheel, INPUT_EVENT_ACK_STATE_CONSUMED);
  EXPECT_TRUE(ScrollStateIsContentScrolling());

  // Touchpad scroll can end with a zero-velocity fling. But it is not
  // dispatched, but it should still reset the overscroll controller state.
  SimulateGestureFlingStartEvent(0.f, 0.f, blink::WebGestureDeviceTouchpad);
  EXPECT_TRUE(ScrollStateIsUnknown());
  EXPECT_EQ(0U, sink_->message_count());

  SimulateWheelEvent(-5, 0, 0, true);    // sent directly
  SimulateWheelEvent(-60, 0, 0, true);   // enqueued
  SimulateWheelEvent(-100, 0, 0, true);  // coalesced into previous event
  EXPECT_TRUE(ScrollStateIsUnknown());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // The first wheel scroll did not scroll content. Overscroll should not start
  // yet, since enough hasn't been scrolled.
  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_TRUE(ScrollStateIsUnknown());
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  SendInputEventACK(WebInputEvent::MouseWheel,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_mode());
  EXPECT_TRUE(ScrollStateIsOverscrolling());
  EXPECT_EQ(0U, sink_->message_count());

  SimulateGestureFlingStartEvent(0.f, 0.f, blink::WebGestureDeviceTouchpad);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_WEST, overscroll_delegate()->completed_mode());
  EXPECT_TRUE(ScrollStateIsUnknown());
  EXPECT_EQ(0U, sink_->message_count());
}

TEST_F(RenderWidgetHostViewAuraOverscrollTest, OverscrollResetsOnBlur) {
  SetUpOverscrollEnvironment();

  // Start an overscroll with gesture scroll. In the middle of the scroll, blur
  // the host.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  SimulateGestureScrollUpdateEvent(300, -5, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(2U, GetSentMessageCountAndResetSink());

  view_->OnWindowFocused(NULL, view_->GetAttachedWindow());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->completed_mode());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_x());
  EXPECT_EQ(0.f, overscroll_delegate()->delta_y());
  sink_->ClearMessages();

  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(1U, GetSentMessageCountAndResetSink());

  // Start a scroll gesture again. This should correctly start the overscroll
  // after the threshold.
  SimulateGestureEvent(WebInputEvent::GestureScrollBegin,
                       blink::WebGestureDeviceTouchscreen);
  SimulateGestureScrollUpdateEvent(300, -5, 0);
  SendInputEventACK(WebInputEvent::GestureScrollUpdate,
                    INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->completed_mode());

  SimulateGestureEvent(WebInputEvent::GestureScrollEnd,
                       blink::WebGestureDeviceTouchscreen);
  EXPECT_EQ(OVERSCROLL_NONE, overscroll_delegate()->current_mode());
  EXPECT_EQ(OVERSCROLL_EAST, overscroll_delegate()->completed_mode());
  EXPECT_EQ(3U, sink_->message_count());
}

// Tests that when view initiated shutdown happens (i.e. RWHView is deleted
// before RWH), we clean up properly and don't leak the RWHVGuest.
TEST_F(RenderWidgetHostViewGuestAuraTest, GuestViewDoesNotLeak) {
  TearDownEnvironment();
  ASSERT_FALSE(guest_view_weak_.get());
}

// Tests that invalid touch events are consumed and handled
// synchronously.
TEST_F(RenderWidgetHostViewAuraTest,
       InvalidEventsHaveSyncHandlingDisabled) {
  view_->InitAsChild(NULL);
  view_->Show();

  widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, true));
  EXPECT_TRUE(widget_host_->ShouldForwardTouchEvent());

  ui::TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(30, 30), 0,
                       ui::EventTimeForNow());

  // Construct a move with a touch id which doesn't exist.
  ui::TouchEvent invalid_move(ui::ET_TOUCH_MOVED, gfx::Point(30, 30), 1,
                              ui::EventTimeForNow());

  view_->OnTouchEvent(&press);
  view_->OnTouchEvent(&invalid_move);
  // Valid press is handled asynchronously.
  EXPECT_TRUE(press.synchronous_handling_disabled());
  // Invalid move is handled synchronously, but is consumed.
  EXPECT_FALSE(invalid_move.synchronous_handling_disabled());
  EXPECT_TRUE(invalid_move.stopped_propagation());
}

// Checks key event codes.
TEST_F(RenderWidgetHostViewAuraTest, KeyEvent) {
  view_->InitAsChild(NULL);
  view_->Show();

  ui::KeyEvent key_event(ui::ET_KEY_PRESSED, ui::VKEY_A, ui::DomCode::KEY_A,
                         ui::EF_NONE);
  view_->OnKeyEvent(&key_event);

  const NativeWebKeyboardEvent* event = delegate_.last_event();
  EXPECT_NE(nullptr, event);
  if (event) {
    EXPECT_EQ(key_event.key_code(), event->windowsKeyCode);
    EXPECT_EQ(ui::KeycodeConverter::DomCodeToNativeKeycode(key_event.code()),
              event->nativeKeyCode);
  }
}

}  // namespace content