// Copyright (c) 2016 The Chromium Embedded Framework 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 "tests/ceftests/views/test_window_delegate.h"

#include "include/cef_command_line.h"
#include "include/views/cef_window.h"
#include "include/views/cef_window_delegate.h"
#include "include/wrapper/cef_closure_task.h"
#include "tests/ceftests/thread_helper.h"
#include "tests/gtest/include/gtest/gtest.h"

#if defined(OS_WIN)
#include <windows.h>
#endif

namespace {

// Test timeout in MS.
const int kTestTimeout = 5000;

}  // namespace

// static
const int TestWindowDelegate::kWSize = 400;

// static
void TestWindowDelegate::RunTest(CefRefPtr<CefWaitableEvent> event,
                                 std::unique_ptr<Config> config) {
#if defined(OS_WIN)
  RECT rect = {0, 0, config->window_size, config->window_size};
  if (!config->frameless) {
    // The size value is for the client area. Calculate the whole window size
    // based on the default frame window style.
    AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
                     false /* has_menu */);
  }
  CefSize window_size = CefSize(rect.right - rect.left, rect.bottom - rect.top);
#else
  CefSize window_size = CefSize(config->window_size, config->window_size);
#endif

  CefWindow::CreateTopLevelWindow(
      new TestWindowDelegate(event, std::move(config), window_size));
}

void TestWindowDelegate::OnWindowCreated(CefRefPtr<CefWindow> window) {
  EXPECT_FALSE(window_);
  window_ = window;

  EXPECT_TRUE(window->IsValid());
  EXPECT_FALSE(window->IsClosed());

  EXPECT_FALSE(window->IsVisible());
  EXPECT_FALSE(window->IsDrawn());

  EXPECT_FALSE(window->IsActive());
  EXPECT_FALSE(window->IsAlwaysOnTop());
  EXPECT_FALSE(window->IsMaximized());
  EXPECT_FALSE(window->IsMinimized());
  EXPECT_FALSE(window->IsFullscreen());

  const char* title = "ViewsTest";
  window->SetTitle(title);
  EXPECT_STREQ(title, window->GetTitle().ToString().c_str());

  EXPECT_FALSE(window->GetWindowIcon().get());
  EXPECT_FALSE(window->GetWindowAppIcon().get());

  auto display = window->GetDisplay();
  EXPECT_TRUE(display.get());

  // Size will come from GetGetInitialBounds() or GetPreferredSize() on
  // initial Window creation.
  EXPECT_TRUE(got_get_initial_bounds_);
  if (config_->window_origin.IsEmpty())
    EXPECT_TRUE(got_get_preferred_size_);
  else
    EXPECT_FALSE(got_get_preferred_size_);

  CefRect client_bounds = window->GetBounds();
  if (!config_->window_origin.IsEmpty()) {
    EXPECT_EQ(config_->window_origin.x, client_bounds.x);
    EXPECT_EQ(config_->window_origin.y, client_bounds.y);
  } else {
    // Default origin is the upper-left corner of the display's work area.
    auto work_area = display->GetWorkArea();
    EXPECT_EQ(work_area.x, client_bounds.x);
    EXPECT_EQ(work_area.y, client_bounds.y);
  }

  if (config_->frameless) {
    EXPECT_EQ(config_->window_size, client_bounds.width);
    EXPECT_EQ(config_->window_size, client_bounds.height);
  } else {
    // Client area bounds calculation might have off-by-one errors on Windows
    // due to non-client frame size being calculated internally in pixels and
    // then converted to DIPs. See http://crbug.com/602692.
    EXPECT_TRUE(abs(client_bounds.width - window_size_.width) <= 1);
    EXPECT_TRUE(abs(client_bounds.height - window_size_.height) <= 1);
  }

  // Run the callback.
  if (!config_->on_window_created.is_null())
    std::move(config_->on_window_created).Run(window);

  if (config_->close_window) {
    // Close the window asynchronously.
    CefPostTask(TID_UI,
                base::BindOnce(&TestWindowDelegate::OnCloseWindow, this));
  } else if (!CefCommandLine::GetGlobalCommandLine()->HasSwitch(
                 "disable-test-timeout")) {
    // Timeout the test after a reasonable delay. Use a WeakPtr so that the
    // delayed task doesn't keep this object alive.
    CefPostDelayedTask(TID_UI,
                       base::BindOnce(&TestWindowDelegate::OnTimeoutWindow,
                                      weak_ptr_factory_.GetWeakPtr()),
                       kTestTimeout);
  }
}

void TestWindowDelegate::OnWindowDestroyed(CefRefPtr<CefWindow> window) {
  EXPECT_TRUE(window->IsSame(window_));

  EXPECT_TRUE(window->IsValid());
  EXPECT_TRUE(window->IsClosed());
  EXPECT_FALSE(window->IsVisible());
  EXPECT_FALSE(window->IsDrawn());

  // Run the callback.
  if (!config_->on_window_destroyed.is_null())
    std::move(config_->on_window_destroyed).Run(window);

  window_ = nullptr;

  // Don't execute the timeout callback.
  weak_ptr_factory_.InvalidateWeakPtrs();
}

bool TestWindowDelegate::IsFrameless(CefRefPtr<CefWindow> window) {
  return config_->frameless;
}

CefRect TestWindowDelegate::GetInitialBounds(CefRefPtr<CefWindow> window) {
  got_get_initial_bounds_ = true;
  if (!config_->window_origin.IsEmpty()) {
    return CefRect(config_->window_origin.x, config_->window_origin.y,
                   window_size_.width, window_size_.height);
  }

  // Call GetPreferredSize().
  return CefRect();
}

CefSize TestWindowDelegate::GetPreferredSize(CefRefPtr<CefView> view) {
  got_get_preferred_size_ = true;
  return window_size_;
}

bool TestWindowDelegate::OnAccelerator(CefRefPtr<CefWindow> window,
                                       int command_id) {
  if (!config_->on_accelerator.is_null())
    return config_->on_accelerator.Run(window_, command_id);
  return false;
}

bool TestWindowDelegate::OnKeyEvent(CefRefPtr<CefWindow> window,
                                    const CefKeyEvent& event) {
  if (!config_->on_key_event.is_null())
    return config_->on_key_event.Run(window_, event);
  return false;
}

TestWindowDelegate::TestWindowDelegate(CefRefPtr<CefWaitableEvent> event,
                                       std::unique_ptr<Config> config,
                                       const CefSize& window_size)
    : event_(event),
      config_(std::move(config)),
      window_size_(window_size),
      weak_ptr_factory_(this) {}

TestWindowDelegate::~TestWindowDelegate() {
  // Complete the test (signal the event) asynchronously so objects on the call
  // stack have a chance to unwind.
  CefPostTask(TID_UI, base::BindOnce(SignalEvent, event_));
}

void TestWindowDelegate::OnCloseWindow() {
  if (!window_)
    return;

  EXPECT_TRUE(window_->IsValid());
  EXPECT_FALSE(window_->IsClosed());

  // Close() may clear |window_| so keep a reference.
  CefRefPtr<CefWindow> window = window_;
  window->Close();

  EXPECT_TRUE(window->IsValid());
  EXPECT_TRUE(window->IsClosed());
}

void TestWindowDelegate::OnTimeoutWindow() {
  EXPECT_TRUE(false) << "Test timed out after " << kTestTimeout << "ms";
  OnCloseWindow();
}