// Copyright 2014 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 "ash/host/ash_window_tree_host_x11.h"

#undef None
#undef Bool

#include "base/sys_info.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/test/aura_test_base.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_tree_host_x11.h"
#include "ui/events/event_processor.h"
#include "ui/events/event_target.h"
#include "ui/events/event_target_iterator.h"
#include "ui/events/test/events_test_utils_x11.h"

namespace {

class RootWindowEventHandler : public ui::EventHandler {
 public:
  explicit RootWindowEventHandler(aura::WindowTreeHost* host)
      : target_(host->window()),
        last_touch_type_(ui::ET_UNKNOWN),
        last_touch_id_(-1),
        last_touch_location_(0, 0) {
    target_->AddPreTargetHandler(this);
  }
  ~RootWindowEventHandler() override { target_->RemovePreTargetHandler(this); }

  // ui::EventHandler:
  void OnTouchEvent(ui::TouchEvent* event) override {
    last_touch_id_ = event->touch_id();
    last_touch_type_ = event->type();
    last_touch_location_ = event->location();
  }

  ui::EventType last_touch_type() { return last_touch_type_; }

  int last_touch_id() { return last_touch_id_; }

  gfx::Point last_touch_location() { return last_touch_location_; }

 private:
  ui::EventTarget* target_;
  ui::EventType last_touch_type_;
  int last_touch_id_;
  gfx::Point last_touch_location_;

  DISALLOW_COPY_AND_ASSIGN(RootWindowEventHandler);
};

}  // namespace

namespace ash {

class AshWindowTreeHostX11Test : public aura::test::AuraTestBase {
 public:
  void SetUp() override {
    aura::test::AuraTestBase::SetUp();

#if defined(OS_CHROMEOS)
    // Fake a ChromeOS running env.
    const char* kLsbRelease = "CHROMEOS_RELEASE_NAME=Chromium OS\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, base::Time());
#endif
  }

  void TearDown() override {
    aura::test::AuraTestBase::TearDown();

#if defined(OS_CHROMEOS)
    // Revert the CrOS testing env otherwise the following non-CrOS aura
    // tests will fail.
    // Fake a ChromeOS running env.
    const char* kLsbRelease = "";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, base::Time());
#endif
  }
};

// Fails on ChromeOS valgrind bot. http://crbug.com/499997
#if defined(OS_CHROMEOS)
#define MAYBE_DispatchTouchEventToOneRootWindow DISABLED_DispatchTouchEventToOneRootWindow
#else
#define MAYBE_DispatchTouchEventToOneRootWindow DispatchTouchEventToOneRootWindow
#endif

// Send X touch events to one WindowTreeHost. The WindowTreeHost's
// delegate will get corresponding ui::TouchEvent if the touch events
// are targeting this WindowTreeHost.
TEST_F(AshWindowTreeHostX11Test, MAYBE_DispatchTouchEventToOneRootWindow) {
  scoped_ptr<aura::WindowTreeHostX11> window_tree_host(
      new AshWindowTreeHostX11(gfx::Rect(0, 0, 2560, 1700)));
  window_tree_host->InitHost();
  scoped_ptr<RootWindowEventHandler> handler(
      new RootWindowEventHandler(window_tree_host.get()));

  std::vector<int> devices;
  devices.push_back(0);
  ui::SetUpTouchDevicesForTest(devices);
  std::vector<ui::Valuator> valuators;

  EXPECT_EQ(ui::ET_UNKNOWN, handler->last_touch_type());
  EXPECT_EQ(-1, handler->last_touch_id());

  ui::ScopedXI2Event scoped_xevent;
  // This touch is out of bounds.
  scoped_xevent.InitTouchEvent(
      0, XI_TouchBegin, 5, gfx::Point(1500, 2500), valuators);
  if (window_tree_host->CanDispatchEvent(scoped_xevent))
    window_tree_host->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler->last_touch_type());
  EXPECT_EQ(-1, handler->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler->last_touch_location());

  // Following touchs are within bounds and are passed to delegate.
  scoped_xevent.InitTouchEvent(
      0, XI_TouchBegin, 5, gfx::Point(1500, 1500), valuators);
  if (window_tree_host->CanDispatchEvent(scoped_xevent))
    window_tree_host->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_TOUCH_PRESSED, handler->last_touch_type());
  EXPECT_EQ(0, handler->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 1500), handler->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchUpdate, 5, gfx::Point(1500, 1600), valuators);
  if (window_tree_host->CanDispatchEvent(scoped_xevent))
    window_tree_host->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_TOUCH_MOVED, handler->last_touch_type());
  EXPECT_EQ(0, handler->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 1600), handler->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchEnd, 5, gfx::Point(1500, 1600), valuators);
  if (window_tree_host->CanDispatchEvent(scoped_xevent))
    window_tree_host->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_TOUCH_RELEASED, handler->last_touch_type());
  EXPECT_EQ(0, handler->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 1600), handler->last_touch_location());

  handler.reset();
}

// Send X touch events to two WindowTreeHost. The WindowTreeHost which is
// the event target of the X touch events should generate the corresponding
// ui::TouchEvent for its delegate.
TEST_F(AshWindowTreeHostX11Test, DispatchTouchEventToTwoRootWindow) {
  scoped_ptr<aura::WindowTreeHostX11> window_tree_host1(
      new AshWindowTreeHostX11(gfx::Rect(0, 0, 2560, 1700)));
  window_tree_host1->InitHost();
  scoped_ptr<RootWindowEventHandler> handler1(
      new RootWindowEventHandler(window_tree_host1.get()));

  int host2_y_offset = 1700;
  scoped_ptr<aura::WindowTreeHostX11> window_tree_host2(
      new AshWindowTreeHostX11(gfx::Rect(0, host2_y_offset, 1920, 1080)));
  window_tree_host2->InitHost();
  scoped_ptr<RootWindowEventHandler> handler2(
      new RootWindowEventHandler(window_tree_host2.get()));

  std::vector<int> devices;
  devices.push_back(0);
  ui::SetUpTouchDevicesForTest(devices);
  std::vector<ui::Valuator> valuators;

  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(ui::ET_UNKNOWN, handler2->last_touch_type());
  EXPECT_EQ(-1, handler2->last_touch_id());

  // 2 Touch events are targeted at the second WindowTreeHost.
  ui::ScopedXI2Event scoped_xevent;
  scoped_xevent.InitTouchEvent(
      0, XI_TouchBegin, 5, gfx::Point(1500, 2500), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_PRESSED, handler2->last_touch_type());
  EXPECT_EQ(0, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 2500), handler2->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchBegin, 6, gfx::Point(1600, 2600), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_PRESSED, handler2->last_touch_type());
  EXPECT_EQ(1, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1600, 2600), handler2->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchUpdate, 5, gfx::Point(1500, 2550), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_MOVED, handler2->last_touch_type());
  EXPECT_EQ(0, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 2550), handler2->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchUpdate, 6, gfx::Point(1600, 2650), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_MOVED, handler2->last_touch_type());
  EXPECT_EQ(1, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1600, 2650), handler2->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchEnd, 5, gfx::Point(1500, 2550), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_RELEASED, handler2->last_touch_type());
  EXPECT_EQ(0, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1500, 2550), handler2->last_touch_location());

  scoped_xevent.InitTouchEvent(
      0, XI_TouchEnd, 6, gfx::Point(1600, 2650), valuators);
  if (window_tree_host1->CanDispatchEvent(scoped_xevent))
    window_tree_host1->DispatchEvent(scoped_xevent);
  if (window_tree_host2->CanDispatchEvent(scoped_xevent))
    window_tree_host2->DispatchEvent(scoped_xevent);
  EXPECT_EQ(ui::ET_UNKNOWN, handler1->last_touch_type());
  EXPECT_EQ(-1, handler1->last_touch_id());
  EXPECT_EQ(gfx::Point(0, 0), handler1->last_touch_location());
  EXPECT_EQ(ui::ET_TOUCH_RELEASED, handler2->last_touch_type());
  EXPECT_EQ(1, handler2->last_touch_id());
  EXPECT_EQ(gfx::Point(1600, 2650), handler2->last_touch_location());

  handler1.reset();
  handler2.reset();
}

}  // namespace aura