// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "headless/lib/browser/headless_window_tree_host.h"

#include <memory>

#include "base/containers/flat_set.h"
#include "base/notimplemented.h"
#include "components/viz/common/surfaces/frame_sink_id.h"
#include "headless/lib/browser/headless_focus_client.h"
#include "headless/lib/browser/headless_window_parenting_client.h"
#include "ui/aura/window.h"
#include "ui/events/keycodes/dom/dom_code.h"
#include "ui/gfx/icc_profile.h"

namespace headless {

HeadlessWindowTreeHost::HeadlessWindowTreeHost(
    bool use_external_begin_frame_control) {
  CreateCompositor(false, use_external_begin_frame_control);
  OnAcceleratedWidgetAvailable();

  focus_client_ = std::make_unique<HeadlessFocusClient>();
  aura::client::SetFocusClient(window(), focus_client_.get());
}

HeadlessWindowTreeHost::~HeadlessWindowTreeHost() {
  window_parenting_client_.reset();
  DestroyCompositor();
  DestroyDispatcher();
}

void HeadlessWindowTreeHost::SetParentWindow(gfx::NativeWindow window) {
  window_parenting_client_ =
      std::make_unique<HeadlessWindowParentingClient>(window);
}

bool HeadlessWindowTreeHost::CanDispatchEvent(const ui::PlatformEvent& event) {
  return false;
}

uint32_t HeadlessWindowTreeHost::DispatchEvent(const ui::PlatformEvent& event) {
  return 0;
}

ui::EventSource* HeadlessWindowTreeHost::GetEventSource() {
  return this;
}

gfx::AcceleratedWidget HeadlessWindowTreeHost::GetAcceleratedWidget() {
  return gfx::AcceleratedWidget();
}

gfx::Rect HeadlessWindowTreeHost::GetBoundsInPixels() const {
  return bounds_;
}

void HeadlessWindowTreeHost::SetBoundsInPixels(const gfx::Rect& bounds) {
  window()->SetBounds(bounds);

  if (bounds_ != bounds) {
    bool origin_changed = bounds_.origin() != bounds.origin();

    bounds_ = bounds;

    if (origin_changed) {
      auto weak_ptr = GetWeakPtr();
      OnHostMovedInPixels();
      // Reporting the move may destroy |this|.
      if (!weak_ptr) {
        return;
      }
    }

    // Report host size even if it is not changing to ensure the compositor
    // layers are updated. Optimizing this away causes Page.captureScreenshot()
    // to hang indefinitely. See https://crbug.com/40571433.
    OnHostResizedInPixels(bounds.size());
  }
}

void HeadlessWindowTreeHost::ShowImpl() {}

void HeadlessWindowTreeHost::HideImpl() {}

gfx::Point HeadlessWindowTreeHost::GetLocationOnScreenInPixels() const {
  return bounds_.origin();
}

void HeadlessWindowTreeHost::SetCapture() {}

void HeadlessWindowTreeHost::ReleaseCapture() {}

bool HeadlessWindowTreeHost::CaptureSystemKeyEventsImpl(
    std::optional<base::flat_set<ui::DomCode>> codes) {
  return false;
}

void HeadlessWindowTreeHost::ReleaseSystemKeyEventCapture() {}

bool HeadlessWindowTreeHost::IsKeyLocked(ui::DomCode dom_code) {
  return false;
}

base::flat_map<std::string, std::string>
HeadlessWindowTreeHost::GetKeyboardLayoutMap() {
  NOTIMPLEMENTED();
  return {};
}

void HeadlessWindowTreeHost::SetCursorNative(gfx::NativeCursor cursor_type) {}

void HeadlessWindowTreeHost::MoveCursorToScreenLocationInPixels(
    const gfx::Point& location) {}

void HeadlessWindowTreeHost::OnCursorVisibilityChangedNative(bool show) {}

}  // namespace headless