// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/events/gestures/gesture_provider_aura.h"

#include <memory>

#include "base/test/task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/events/event_utils.h"
#include "ui/events/gesture_detection/gesture_configuration.h"

namespace ui {

class TestGestureConsumer : public GestureConsumer {
 public:
  TestGestureConsumer() = default;
  TestGestureConsumer(const TestGestureConsumer&) = delete;
  TestGestureConsumer& operator=(const TestGestureConsumer&) = delete;
  ~TestGestureConsumer() override = default;

  base::WeakPtr<GestureConsumer> GetWeakPtr() override {
    return weak_ptr_factory_.GetWeakPtr();
  }

 private:
  base::WeakPtrFactory<TestGestureConsumer> weak_ptr_factory_{this};
};

class GestureProviderAuraTest : public testing::Test,
                                public GestureProviderAuraClient {
 public:
  GestureProviderAuraTest()
      : task_environment_(
            base::test::SingleThreadTaskEnvironment::MainThreadType::UI) {}

  ~GestureProviderAuraTest() override {}

  void OnGestureEvent(GestureConsumer* raw_input_consumer,
                      GestureEvent* event) override {}

  void SetUp() override {
    consumer_ = std::make_unique<TestGestureConsumer>();
    provider_ = std::make_unique<GestureProviderAura>(consumer_.get(), this);
  }

  void TearDown() override { provider_.reset(); }

  GestureProviderAura* provider() { return provider_.get(); }

 private:
  std::unique_ptr<TestGestureConsumer> consumer_;
  std::unique_ptr<GestureProviderAura> provider_;
  base::test::SingleThreadTaskEnvironment task_environment_;
};

TEST_F(GestureProviderAuraTest, IgnoresExtraPressEvents) {
  base::TimeTicks time = ui::EventTimeForNow();
  TouchEvent press1(EventType::kTouchPressed, gfx::Point(10, 10), time,
                    PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&press1));

  time += base::Milliseconds(10);
  TouchEvent press2(EventType::kTouchPressed, gfx::Point(30, 40), time,
                    PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_FALSE(provider()->OnTouchEvent(&press2));
}

TEST_F(GestureProviderAuraTest, IgnoresExtraMoveOrReleaseEvents) {
  base::TimeTicks time = ui::EventTimeForNow();
  TouchEvent press1(EventType::kTouchPressed, gfx::Point(10, 10), time,
                    PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&press1));

  time += base::Milliseconds(10);
  TouchEvent release1(EventType::kTouchReleased, gfx::Point(30, 40), time,
                      PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&release1));

  time += base::Milliseconds(10);
  TouchEvent release2(EventType::kTouchReleased, gfx::Point(30, 45), time,
                      PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_FALSE(provider()->OnTouchEvent(&release1));

  time += base::Milliseconds(10);
  TouchEvent move1(EventType::kTouchMoved, gfx::Point(70, 75), time,
                   PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_FALSE(provider()->OnTouchEvent(&move1));
}

TEST_F(GestureProviderAuraTest, DoesntStallOnCancelAndRelease) {
  GestureConfiguration::GetInstance()->set_single_pointer_cancel_enabled(false);
  base::TimeTicks time = ui::EventTimeForNow();

  TouchEvent touch_press(EventType::kTouchPressed, gfx::Point(10, 10), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press));
  time += base::Milliseconds(10);

  TouchEvent pen_press1(EventType::kTouchPressed, gfx::Point(20, 20), time,
                        PointerDetails(ui::EventPointerType::kPen, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&pen_press1));
  time += base::Milliseconds(10);

  TouchEvent touch_cancel(EventType::kTouchCancelled, gfx::Point(30, 30), time,
                          PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_cancel));
  time += base::Milliseconds(10);

  TouchEvent pen_release1(EventType::kTouchReleased, gfx::Point(40, 40), time,
                          PointerDetails(ui::EventPointerType::kPen, 1));
  EXPECT_FALSE(provider()->OnTouchEvent(&pen_release1));
  time += base::Milliseconds(10);

  TouchEvent pen_press2(EventType::kTouchPressed, gfx::Point(10, 10), time,
                        PointerDetails(ui::EventPointerType::kPen, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&pen_press2));
  time += base::Milliseconds(10);

  TouchEvent pen_release2(EventType::kTouchReleased, gfx::Point(10, 10), time,
                          PointerDetails(ui::EventPointerType::kPen, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&pen_release2));
}

TEST_F(GestureProviderAuraTest, ContinueGestureDetectionAfterCancel) {
  GestureConfiguration::GetInstance()->set_single_pointer_cancel_enabled(true);
  base::TimeTicks time = ui::EventTimeForNow();

  TouchEvent touch_press1(EventType::kTouchPressed, gfx::Point(10, 10), time,
                          PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press1));
  time += base::Milliseconds(10);

  TouchEvent touch_press2(EventType::kTouchPressed, gfx::Point(20, 20), time,
                          PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press2));
  time += base::Milliseconds(10);

  TouchEvent touch_move1(EventType::kTouchMoved, gfx::Point(30, 30), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move1));
  time += base::Milliseconds(10);

  TouchEvent touch_move2(EventType::kTouchMoved, gfx::Point(40, 40), time,
                         PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move2));
  time += base::Milliseconds(10);

  TouchEvent touch_cancel(EventType::kTouchCancelled, gfx::Point(50, 50), time,
                          PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_cancel));
  time += base::Milliseconds(10);

  TouchEvent touch_move3(EventType::kTouchMoved, gfx::Point(60, 60), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move3));
  time += base::Milliseconds(10);

  TouchEvent touch_release(EventType::kTouchReleased, gfx::Point(70, 70), time,
                           PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_release));
  time += base::Milliseconds(10);
}

TEST_F(GestureProviderAuraTest, ContinueGestureDetectionAfterMultipleCancel) {
  GestureConfiguration::GetInstance()->set_single_pointer_cancel_enabled(true);
  base::TimeTicks time = ui::EventTimeForNow();

  TouchEvent touch_press1(EventType::kTouchPressed, gfx::Point(10, 10), time,
                          PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press1));
  time += base::Milliseconds(10);

  TouchEvent touch_press2(EventType::kTouchPressed, gfx::Point(20, 20), time,
                          PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press2));
  time += base::Milliseconds(10);

  TouchEvent touch_press3(EventType::kTouchPressed, gfx::Point(30, 30), time,
                          PointerDetails(ui::EventPointerType::kTouch, 2));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_press3));
  time += base::Milliseconds(10);

  TouchEvent touch_move1(EventType::kTouchMoved, gfx::Point(40, 40), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move1));
  time += base::Milliseconds(10);

  TouchEvent touch_move2(EventType::kTouchMoved, gfx::Point(50, 50), time,
                         PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move2));
  time += base::Milliseconds(10);

  TouchEvent touch_move3(EventType::kTouchMoved, gfx::Point(60, 60), time,
                         PointerDetails(ui::EventPointerType::kTouch, 2));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move3));
  time += base::Milliseconds(10);

  TouchEvent touch_cancel1(EventType::kTouchCancelled, gfx::Point(70, 70), time,
                           PointerDetails(ui::EventPointerType::kTouch, 1));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_cancel1));
  time += base::Milliseconds(10);

  TouchEvent touch_move4(EventType::kTouchMoved, gfx::Point(80, 80), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move4));
  time += base::Milliseconds(10);

  TouchEvent touch_move5(EventType::kTouchMoved, gfx::Point(90, 90), time,
                         PointerDetails(ui::EventPointerType::kTouch, 2));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move5));
  time += base::Milliseconds(10);

  TouchEvent touch_cancel2(EventType::kTouchCancelled, gfx::Point(100, 100),
                           time,
                           PointerDetails(ui::EventPointerType::kTouch, 2));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_cancel2));
  time += base::Milliseconds(10);

  TouchEvent touch_move6(EventType::kTouchMoved, gfx::Point(110, 110), time,
                         PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_move6));
  time += base::Milliseconds(10);

  TouchEvent touch_release(EventType::kTouchReleased, gfx::Point(120, 120),
                           time,
                           PointerDetails(ui::EventPointerType::kTouch, 0));
  EXPECT_TRUE(provider()->OnTouchEvent(&touch_release));
  time += base::Milliseconds(10);
}

TEST_F(GestureProviderAuraTest, IgnoresIdenticalMoveEvents) {
  const float kRadiusX = 20.f;
  const float kRadiusY = 30.f;
  const float kAngle = 0.321f;
  const float kForce = 40.f;
  const int kTouchId0 = 5;
  const int kTouchId1 = 3;

  PointerDetails pointer_details1(EventPointerType::kTouch, kTouchId0);
  base::TimeTicks time = ui::EventTimeForNow();
  TouchEvent press0_1(EventType::kTouchPressed, gfx::Point(9, 10), time,
                      pointer_details1);
  EXPECT_TRUE(provider()->OnTouchEvent(&press0_1));

  PointerDetails pointer_details2(EventPointerType::kTouch, kTouchId1);
  TouchEvent press1_1(EventType::kTouchPressed, gfx::Point(40, 40), time,
                      pointer_details2);
  EXPECT_TRUE(provider()->OnTouchEvent(&press1_1));

  time += base::Milliseconds(10);
  pointer_details1 = PointerDetails(EventPointerType::kTouch, kTouchId0,
                                    kRadiusX, kRadiusY, kForce, kAngle);
  TouchEvent move0_1(EventType::kTouchMoved, gfx::Point(10, 10), time,
                     pointer_details1, 0);
  EXPECT_TRUE(provider()->OnTouchEvent(&move0_1));

  pointer_details2 = PointerDetails(EventPointerType::kTouch, kTouchId1,
                                    kRadiusX, kRadiusY, kForce, kAngle);
  TouchEvent move1_1(EventType::kTouchMoved, gfx::Point(100, 200), time,
                     pointer_details2, 0);
  EXPECT_TRUE(provider()->OnTouchEvent(&move1_1));

  time += base::Milliseconds(10);
  TouchEvent move0_2(EventType::kTouchMoved, gfx::Point(10, 10), time,
                     pointer_details1, 0);
  // Nothing has changed, so ignore the move.
  EXPECT_FALSE(provider()->OnTouchEvent(&move0_2));

  TouchEvent move1_2(EventType::kTouchMoved, gfx::Point(100, 200), time,
                     pointer_details2, 0);
  // Nothing has changed, so ignore the move.
  EXPECT_FALSE(provider()->OnTouchEvent(&move1_2));

  time += base::Milliseconds(10);
  TouchEvent move0_3(EventType::kTouchMoved, gfx::Point(), time,
                     pointer_details1, 0);
  move0_3.set_location_f(gfx::PointF(70, 75.1f));
  move0_3.set_root_location_f(gfx::PointF(70, 75.1f));
  // Position has changed, so don't ignore the move.
  EXPECT_TRUE(provider()->OnTouchEvent(&move0_3));

  time += base::Milliseconds(10);
  pointer_details2.radius_y += 1;
  TouchEvent move0_4(EventType::kTouchMoved, gfx::Point(), time,
                     pointer_details2, 0);
  move0_4.set_location_f(gfx::PointF(70, 75.1f));
  move0_4.set_root_location_f(gfx::PointF(70, 75.1f));
}

// TODO(jdduke): Test whether event marked as scroll trigger.

}  // namespace ui