SSL nsDOMWindowUtils.cpp Interaktion und
PortierbarkeitC

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsDOMWindowUtils.h"

#include "LayoutConstants.h"
#include "MobileViewportManager.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "nsPresContext.h"
#include "nsCaret.h"
#include "nsContentList.h"
#include "nsError.h"
#include "nsQueryContentEventResult.h"
#include "nsGlobalWindowOuter.h"
#include "nsFocusManager.h"
#include "nsFrameManager.h"
#include "nsRefreshDriver.h"
#include "nsStyleUtil.h"
#include "mozilla/Base64.h"
#include "mozilla/dom/Animation.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/DocumentInlines.h"
#include "mozilla/dom/DocumentTimeline.h"
#include "mozilla/dom/DOMCollectedFramesBinding.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/Touch.h"
#include "mozilla/dom/UserActivation.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/ScrollContainerFrame.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/SharedStyleSheetCache.h"
#include "mozilla/dom/SharedScriptCache.h"
#include "mozilla/StaticPrefs_test.h"
#include "mozilla/InputTaskManager.h"
#include "nsIObjectLoadingContent.h"
#include "nsIFrame.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/layers/PCompositorBridgeTypes.h"
#include "mozilla/layers/TouchActionHelper.h"
#include "mozilla/media/MediaUtils.h"
#include "nsQueryObject.h"
#include "CubebDeviceEnumerator.h"

#include "nsContentUtils.h"

#include "nsIWidget.h"
#include "nsCharsetSource.h"
#include "nsJSEnvironment.h"
#include "nsJSUtils.h"
#include "js/experimental/PCCountProfiling.h"  // JS::{Start,Stop}PCCountProfiling, JS::PurgePCCounts, JS::GetPCCountScript{Count,Summary,Contents}
#include "js/Object.h"                         // JS::GetClass

#include "mozilla/ChaosMode.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/PresShell.h"
#include "mozilla/PresShellInlines.h"
#include "mozilla/Span.h"
#include "mozilla/StaticPrefs_layout.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TouchEvents.h"

#include "nsViewManager.h"

#include "nsLayoutUtils.h"
#include "nsComputedDOMStyle.h"
#include "nsCSSProps.h"
#include "nsIDocShell.h"
#include "mozilla/StyleAnimationValue.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FileBinding.h"
#include "mozilla/dom/DOMRect.h"
#include <algorithm>

#if defined(MOZ_WIDGET_GTK)
#  include <gdk/gdk.h>
#  if defined(MOZ_X11)
#    include <gdk/gdkx.h>
#    include "X11UndefineNone.h"
#  endif
#endif

#include "mozilla/dom/AudioDeviceInfo.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/dom/IDBFactoryBinding.h"
#include "mozilla/dom/IndexedDatabaseManager.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/Text.h"
#include "mozilla/dom/quota/PersistenceType.h"
#include "mozilla/dom/quota/PrincipalUtils.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/layers/FrameUniformityData.h"
#include "nsPrintfCString.h"
#include "nsViewportInfo.h"
#include "nsIFormControl.h"
// #include "nsWidgetsCID.h"
#include "nsDisplayList.h"
#include "nsROCSSPrimitiveValue.h"
#include "nsIBaseWindow.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIInterfaceRequestorUtils.h"
#include "mozilla/Preferences.h"
#include "nsContentPermissionHelper.h"
#include "nsCSSPseudoElements.h"  // for PseudoStyleType
#include "nsNetUtil.h"
#include "HTMLImageElement.h"
#include "HTMLCanvasElement.h"
#include "mozilla/css/ImageLoader.h"
#include "mozilla/layers/IAPZCTreeManager.h"  // for layers::ZoomToRectBehavior
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/RDDProcessManager.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/StyleSheetInlines.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/dom/TimeoutManager.h"
#include "mozilla/PreloadedStyleSheet.h"
#include "mozilla/ProfilerLabels.h"
#include "mozilla/ProfilerMarkers.h"
#include "mozilla/layers/WebRenderBridgeChild.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "mozilla/DisplayPortUtils.h"
#include "mozilla/ResultExtensions.h"
#include "mozilla/ViewportUtils.h"
#include "mozilla/dom/BrowsingContextGroup.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/IMEContentObserver.h"
#include "mozilla/WheelHandlingHelper.h"
#include "mozilla/AnimatedPropertyID.h"

#ifdef XP_WIN
#  include <direct.h>
#else
#  include <sys/stat.h>
#endif

#ifdef XP_WIN
#  undef GetClassName
#endif

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::ipc;
using namespace mozilla::layers;
using namespace mozilla::widget;
using namespace mozilla::gfx;

class gfxContext;

class OldWindowSize : public LinkedListElement<OldWindowSize> {
public:
  static void Set(nsIWeakReference* aWindowRef, const nsSize& aSize) {
    OldWindowSize* item = GetItem(aWindowRef);
    if (item) {
      item->mSize = aSize;
    } else {
      item = new OldWindowSize(aWindowRef, aSize);
      sList.insertBack(item);
    }
  }

  static nsSize GetAndRemove(nsIWeakReference* aWindowRef) {
    nsSize result;
    if (OldWindowSize* item = GetItem(aWindowRef)) {
      result = item->mSize;
      delete item;
    }
    return result;
  }

private:
  explicit OldWindowSize(nsIWeakReference* aWindowRef, const nsSize& aSize)
      : mWindowRef(aWindowRef), mSize(aSize) {}
  ~OldWindowSize() = default;
  ;

  static OldWindowSize* GetItem(nsIWeakReference* aWindowRef) {
    OldWindowSize* item = sList.getFirst();
    while (item && item->mWindowRef != aWindowRef) {
      item = item->getNext();
    }
    return item;
  }

  static LinkedList<OldWindowSize> sList;
  nsWeakPtr mWindowRef;
  nsSize mSize;
};

namespace {

class NativeInputRunnable final : public PrioritizableRunnable {
  explicit NativeInputRunnable(already_AddRefed<nsIRunnable>&& aEvent);
  ~NativeInputRunnable() = default;

public:
  static already_AddRefed<nsIRunnable> Create(
      already_AddRefed<nsIRunnable>&& aEvent);
};

NativeInputRunnable::NativeInputRunnable(already_AddRefed<nsIRunnable>&& aEvent)
    : PrioritizableRunnable(std::move(aEvent),
                            nsIRunnablePriority::PRIORITY_INPUT_HIGH) {}

/* static */
already_AddRefed<nsIRunnable> NativeInputRunnable::Create(
    already_AddRefed<nsIRunnable>&& aEvent) {
  MOZ_ASSERT(NS_IsMainThread());
  nsCOMPtr<nsIRunnable> event(new NativeInputRunnable(std::move(aEvent)));
  return event.forget();
}

}  // unnamed namespace

MOZ_RUNINIT LinkedList<OldWindowSize> OldWindowSize::sList;

NS_INTERFACE_MAP_BEGIN(nsDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY(nsIDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END

NS_IMPL_ADDREF(nsDOMWindowUtils)
NS_IMPL_RELEASE(nsDOMWindowUtils)

nsDOMWindowUtils::nsDOMWindowUtils(nsGlobalWindowOuter* aWindow) {
  nsCOMPtr<nsISupports> supports = do_QueryObject(aWindow);
  mWindow = do_GetWeakReference(supports);
}

nsDOMWindowUtils::~nsDOMWindowUtils() { OldWindowSize::GetAndRemove(mWindow); }

nsIDocShell* nsDOMWindowUtils::GetDocShell() {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  if (!window) {
    return nullptr;
  }
  return window->GetDocShell();
}

PresShell* nsDOMWindowUtils::GetPresShell() {
  nsIDocShell* docShell = GetDocShell();
  if (!docShell) {
    return nullptr;
  }
  return docShell->GetPresShell();
}

nsPresContext* nsDOMWindowUtils::GetPresContext() {
  nsIDocShell* docShell = GetDocShell();
  if (!docShell) {
    return nullptr;
  }
  return docShell->GetPresContext();
}

Document* nsDOMWindowUtils::GetDocument() {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  if (!window) {
    return nullptr;
  }
  return window->GetExtantDoc();
}

WebRenderBridgeChild* nsDOMWindowUtils::GetWebRenderBridge() {
  if (nsIWidget* widget = GetWidget()) {
    if (WindowRenderer* renderer = widget->GetWindowRenderer()) {
      if (WebRenderLayerManager* wr = renderer->AsWebRender()) {
        return wr->WrBridge();
      }
    }
  }
  return nullptr;
}

CompositorBridgeChild* nsDOMWindowUtils::GetCompositorBridge() {
  if (nsIWidget* widget = GetWidget()) {
    if (WindowRenderer* renderer = widget->GetWindowRenderer()) {
      if (CompositorBridgeChild* cbc = renderer->GetCompositorBridgeChild()) {
        return cbc;
      }
    }
  }
  return nullptr;
}

nsresult nsDOMWindowUtils::GetWidgetOpaqueRegion(
    nsTArray<RefPtr<DOMRect>>& aRects) {
  nsIWidget* widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }
  auto AddRect = [&](const LayoutDeviceIntRect& aRect) {
    RefPtr rect = new DOMRect(mWindow);
    CSSRect cssRect = aRect / widget->GetDefaultScale();
    rect->SetRect(cssRect.x, cssRect.y, cssRect.width, cssRect.height);
    aRects.AppendElement(std::move(rect));
  };
  if (widget->GetTransparencyMode() == TransparencyMode::Opaque) {
    AddRect(
        LayoutDeviceIntRect(LayoutDeviceIntPoint(), widget->GetClientSize()));
    return NS_OK;
  }
  auto region = widget->GetOpaqueRegionForTesting();
  for (auto iter = region.RectIter(); !iter.Done(); iter.Next()) {
    AddRect(iter.Get());
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetLastOverWindowPointerLocationInCSSPixels(float* aX,
                                                              float* aY) {
  const PresShell* presShell = GetPresShell();
  const nsPresContext* presContext = GetPresContext();

  if (!presShell || !presContext) {
    return NS_ERROR_FAILURE;
  }

  const nsPoint& lastOverWindowPointerLocation =
      presShell->GetLastOverWindowPointerLocation();

  if (lastOverWindowPointerLocation.X() == NS_UNCONSTRAINEDSIZE &&
      lastOverWindowPointerLocation.Y() == NS_UNCONSTRAINEDSIZE) {
    *aX = 0;
    *aY = 0;
  } else {
    const CSSPoint lastOverWindowPointerLocationInCSSPixels =
        CSSPoint::FromAppUnits(lastOverWindowPointerLocation);
    *aX = lastOverWindowPointerLocationInCSSPixels.X();
    *aY = lastOverWindowPointerLocationInCSSPixels.Y();
  }

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SyncFlushCompositor() {
  if (nsIWidget* widget = GetWidget()) {
    if (WindowRenderer* renderer = widget->GetWindowRenderer()) {
      if (KnowsCompositor* kc = renderer->AsKnowsCompositor()) {
        kc->SyncWithCompositor();
      }
    }
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetImageAnimationMode(uint16_t* aMode) {
  NS_ENSURE_ARG_POINTER(aMode);
  *aMode = 0;
  nsPresContext* presContext = GetPresContext();
  if (presContext) {
    *aMode = presContext->ImageAnimationMode();
    return NS_OK;
  }
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetImageAnimationMode(uint16_t aMode) {
  nsPresContext* presContext = GetPresContext();
  if (presContext) {
    presContext->SetImageAnimationMode(aMode);
    return NS_OK;
  }
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetDocCharsetIsForced(bool* aIsForced) {
  *aIsForced = false;

  Document* doc = GetDocument();
  if (doc) {
    auto source = doc->GetDocumentCharacterSetSource();
    *aIsForced = source == kCharsetFromInitialUserForcedAutoDetection ||
                 source == kCharsetFromFinalUserForcedAutoDetection;
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetPhysicalMillimeterInCSSPixels(float* aPhysicalMillimeter) {
  nsPresContext* presContext = GetPresContext();
  if (!presContext) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  *aPhysicalMillimeter = nsPresContext::AppUnitsToFloatCSSPixels(
      presContext->PhysicalMillimetersToAppUnits(1));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetDocumentMetadata(const nsAString& aName,
                                      nsAString& aValue) {
  Document* doc = GetDocument();
  if (doc) {
    RefPtr<nsAtom> name = NS_Atomize(aName);
    doc->GetHeaderData(name, aValue);
    return NS_OK;
  }

  aValue.Truncate();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::UpdateLayerTree() {
  if (RefPtr<PresShell> presShell = GetPresShell()) {
    // Don't flush throttled animations since it might fire MozAfterPaint event
    // (in WebRender it constantly does), thus the reftest harness can't take
    // any snapshot until the throttled animations finished.
    presShell->FlushPendingNotifications(
        ChangesToFlush(FlushType::Layout, false /* flush animations */));
    RefPtr<nsViewManager> vm = presShell->GetViewManager();
    if (nsView* view = vm->GetRootView()) {
      nsAutoScriptBlocker scriptBlocker;
      presShell->PaintAndRequestComposite(view,
                                          PaintFlags::PaintSyncDecodeImages);
      presShell->GetWindowRenderer()->WaitOnTransactionProcessed();
    }
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetDocumentViewerSize(uint32_t* aDisplayWidth,
                                        uint32_t* aDisplayHeight) {
  PresShell* presShell = GetPresShell();
  LayoutDeviceIntSize displaySize;

  if (!presShell || !nsLayoutUtils::GetDocumentViewerSize(
                        presShell->GetPresContext(), displaySize)) {
    return NS_ERROR_FAILURE;
  }

  *aDisplayWidth = displaySize.width;
  *aDisplayHeight = displaySize.height;

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetViewportInfo(uint32_t aDisplayWidth,
                                  uint32_t aDisplayHeight, double* aDefaultZoom,
                                  bool* aAllowZoom, double* aMinZoom,
                                  double* aMaxZoom, uint32_t* aWidth,
                                  uint32_t* aHeight, bool* aAutoSize) {
  Document* doc = GetDocument();
  NS_ENSURE_STATE(doc);

  nsViewportInfo info =
      doc->GetViewportInfo(ScreenIntSize(aDisplayWidth, aDisplayHeight));
  *aDefaultZoom = info.GetDefaultZoom().scale;
  *aAllowZoom = info.IsZoomAllowed();
  *aMinZoom = info.GetMinZoom().scale;
  *aMaxZoom = info.GetMaxZoom().scale;
  CSSIntSize size = gfx::RoundedToInt(info.GetSize());
  *aWidth = size.width;
  *aHeight = size.height;
  *aAutoSize = info.IsAutoSizeEnabled();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetViewportFitInfo(nsAString& aViewportFit) {
  Document* doc = GetDocument();
  NS_ENSURE_STATE(doc);

  ViewportMetaData metaData = doc->GetViewportMetaData();
  if (metaData.mViewportFit.EqualsLiteral("contain")) {
    aViewportFit.AssignLiteral("contain");
  } else if (metaData.mViewportFit.EqualsLiteral("cover")) {
    aViewportFit.AssignLiteral("cover");
  } else {
    aViewportFit.AssignLiteral("auto");
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetMousewheelAutodir(Element* aElement, bool aEnabled,
                                       bool aHonourRoot) {
  aElement->SetProperty(nsGkAtoms::forceMousewheelAutodir,
                        reinterpret_cast<void*>(aEnabled));
  aElement->SetProperty(nsGkAtoms::forceMousewheelAutodirHonourRoot,
                        reinterpret_cast<void*>(aHonourRoot));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetDisplayPortForElement(float aXPx, float aYPx,
                                           float aWidthPx, float aHeightPx,
                                           Element* aElement,
                                           uint32_t aPriority) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  if (!aElement) {
    return NS_ERROR_INVALID_ARG;
  }

  if (aElement->GetUncomposedDoc() != presShell->GetDocument()) {
    return NS_ERROR_INVALID_ARG;
  }

  bool hadDisplayPort = false;
  bool wasPainted = false;
  nsRect oldDisplayPort;
  {
    DisplayPortPropertyData* currentData =
        static_cast<DisplayPortPropertyData*>(
            aElement->GetProperty(nsGkAtoms::DisplayPort));
    if (currentData) {
      if (currentData->mPriority > aPriority) {
        return NS_OK;
      }
      hadDisplayPort = true;
      oldDisplayPort = currentData->mRect;
      wasPainted = currentData->mPainted;
    }
  }

  nsRect displayport(nsPresContext::CSSPixelsToAppUnits(aXPx),
                     nsPresContext::CSSPixelsToAppUnits(aYPx),
                     nsPresContext::CSSPixelsToAppUnits(aWidthPx),
                     nsPresContext::CSSPixelsToAppUnits(aHeightPx));

  aElement->RemoveProperty(nsGkAtoms::MinimalDisplayPort);
  aElement->SetProperty(
      nsGkAtoms::DisplayPort,
      new DisplayPortPropertyData(displayport, aPriority, wasPainted),
      nsINode::DeleteProperty<DisplayPortPropertyData>);

  DisplayPortUtils::InvalidateForDisplayPortChange(aElement, hadDisplayPort,
                                                   oldDisplayPort, displayport);

  nsIFrame* rootFrame = presShell->GetRootFrame();
  if (rootFrame) {
    rootFrame->SchedulePaint();

    // If we are hiding something that is a display root then send empty paint
    // transaction in order to release retained layers because it won't get
    // any more paint requests when it is hidden.
    if (displayport.IsEmpty() &&
        rootFrame == nsLayoutUtils::GetDisplayRootFrame(rootFrame)) {
      nsCOMPtr<nsIWidget> widget = GetWidget();
      if (widget) {
        using PaintFrameFlags = nsLayoutUtils::PaintFrameFlags;
        nsLayoutUtils::PaintFrame(
            nullptr, rootFrame, nsRegion(), NS_RGB(255, 255, 255),
            nsDisplayListBuilderMode::Painting, PaintFrameFlags::WidgetLayers);
      }
    }
  }

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetDisplayPortMarginsForElement(
    float aLeftMargin, float aTopMargin, float aRightMargin,
    float aBottomMargin, Element* aElement, uint32_t aPriority) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  if (!aElement) {
    return NS_ERROR_INVALID_ARG;
  }

  if (aElement->GetUncomposedDoc() != presShell->GetDocument()) {
    return NS_ERROR_INVALID_ARG;
  }

  // Note order change of arguments between our function signature and
  // ScreenMargin constructor.
  ScreenMargin displayportMargins(aTopMargin, aRightMargin, aBottomMargin,
                                  aLeftMargin);

  DisplayPortUtils::SetDisplayPortMargins(
      aElement, presShell,
      DisplayPortMargins::ForContent(aElement, displayportMargins),
      DisplayPortUtils::ClearMinimalDisplayPortProperty::Yes, aPriority);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetDisplayPortBaseForElement(int32_t aX, int32_t aY,
                                               int32_t aWidth, int32_t aHeight,
                                               Element* aElement) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  if (!aElement) {
    return NS_ERROR_INVALID_ARG;
  }

  if (aElement->GetUncomposedDoc() != presShell->GetDocument()) {
    return NS_ERROR_INVALID_ARG;
  }

  DisplayPortUtils::SetDisplayPortBase(aElement,
                                       nsRect(aX, aY, aWidth, aHeight));

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetScrollbarSizes(Element* aElement,
                                    uint32_t* aOutVerticalScrollbarWidth,
                                    uint32_t* aOutHorizontalScrollbarHeight) {
  ScrollContainerFrame* scrollContainerFrame =
      nsLayoutUtils::FindScrollContainerFrameFor(aElement);
  if (!scrollContainerFrame) {
    return NS_ERROR_INVALID_ARG;
  }

  CSSIntMargin scrollbarSizes = RoundedToInt(
      CSSMargin::FromAppUnits(scrollContainerFrame->GetActualScrollbarSizes(
          ScrollContainerFrame::ScrollbarSizesOptions::
              INCLUDE_VISUAL_VIEWPORT_SCROLLBARS)));
  *aOutVerticalScrollbarWidth = scrollbarSizes.LeftRight();
  *aOutHorizontalScrollbarHeight = scrollbarSizes.TopBottom();

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetResolutionAndScaleTo(float aResolution) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  presShell->SetResolutionAndScaleTo(aResolution, ResolutionChangeOrigin::Test);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetRestoreResolution(float aResolution,
                                       uint32_t aDisplayWidth,
                                       uint32_t aDisplayHeight) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  presShell->SetRestoreResolution(
      aResolution, LayoutDeviceIntSize(aDisplayWidth, aDisplayHeight));

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetResolution(float* aResolution) {
  PresShell* presShell = GetPresShell();
  if (!presShell) {
    return NS_ERROR_FAILURE;
  }

  *aResolution = presShell->GetResolution();

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetIsFirstPaint(bool aIsFirstPaint) {
  if (PresShell* presShell = GetPresShell()) {
    presShell->SetIsFirstPaint(aIsFirstPaint);
    return NS_OK;
  }
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetIsFirstPaint(bool* aIsFirstPaint) {
  if (PresShell* presShell = GetPresShell()) {
    *aIsFirstPaint = presShell->GetIsFirstPaint();
    return NS_OK;
  }
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetPresShellId(uint32_t* aPresShellId) {
  if (PresShell* presShell = GetPresShell()) {
    *aPresShellId = presShell->GetPresShellId();
    return NS_OK;
  }
  return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEvent(
    const nsAString& aType, float aX, float aY, int32_t aButton,
    int32_t aClickCount, int32_t aModifiers, bool aIgnoreRootScrollFrame,
    float aPressure, unsigned short aInputSourceArg,
    bool aIsDOMEventSynthesized, bool aIsWidgetEventSynthesized,
    int32_t aButtons, uint32_t aIdentifier, uint8_t aOptionalArgCount,
    bool* aPreventDefault) {
  return SendMouseEventCommon(
      aType, aX, aY, aButton, aClickCount, aModifiers, aIgnoreRootScrollFrame,
      aPressure, aInputSourceArg,
      aOptionalArgCount >= 7 ? aIdentifier : DEFAULT_MOUSE_POINTER_ID, false,
      aPreventDefault, aOptionalArgCount >= 4 ? aIsDOMEventSynthesized : true,
      aOptionalArgCount >= 5 ? aIsWidgetEventSynthesized : false,
      aOptionalArgCount >= 6 ? aButtons : MOUSE_BUTTONS_NOT_SPECIFIED);
}

NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventToWindow(
    const nsAString& aType, float aX, float aY, int32_t aButton,
    int32_t aClickCount, int32_t aModifiers, bool aIgnoreRootScrollFrame,
    float aPressure, unsigned short aInputSourceArg,
    bool aIsDOMEventSynthesized, bool aIsWidgetEventSynthesized,
    int32_t aButtons, uint32_t aIdentifier, uint8_t aOptionalArgCount) {
  AUTO_PROFILER_LABEL("nsDOMWindowUtils::SendMouseEventToWindow", OTHER);

  return SendMouseEventCommon(
      aType, aX, aY, aButton, aClickCount, aModifiers, aIgnoreRootScrollFrame,
      aPressure, aInputSourceArg,
      aOptionalArgCount >= 7 ? aIdentifier : DEFAULT_MOUSE_POINTER_ID, true,
      nullptr, aOptionalArgCount >= 4 ? aIsDOMEventSynthesized : true,
      aOptionalArgCount >= 5 ? aIsWidgetEventSynthesized : false,
      aOptionalArgCount >= 6 ? aButtons : MOUSE_BUTTONS_NOT_SPECIFIED);
}

NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventCommon(
    const nsAString& aType, float aX, float aY, int32_t aButton,
    int32_t aClickCount, int32_t aModifiers, bool aIgnoreRootScrollFrame,
    float aPressure, unsigned short aInputSourceArg, uint32_t aPointerId,
    bool aToWindow, bool* aPreventDefault, bool aIsDOMEventSynthesized,
    bool aIsWidgetEventSynthesized, int32_t aButtons) {
  RefPtr<PresShell> presShell = GetPresShell();
  return nsContentUtils::SendMouseEvent(
      presShell, aType, aX, aY, aButton, aButtons, aClickCount, aModifiers,
      aIgnoreRootScrollFrame, aPressure, aInputSourceArg, aPointerId, aToWindow,
      aPreventDefault, aIsDOMEventSynthesized, aIsWidgetEventSynthesized);
}

NS_IMETHODIMP
nsDOMWindowUtils::IsCORSSafelistedRequestHeader(const nsACString& aName,
                                                const nsACString& aValue,
                                                bool* aRetVal) {
  NS_ENSURE_ARG_POINTER(aRetVal);
  *aRetVal = nsContentUtils::IsCORSSafelistedRequestHeader(aName, aValue);
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendWheelEvent(float aX, float aY, double aDeltaX,
                                 double aDeltaY, double aDeltaZ,
                                 uint32_t aDeltaMode, int32_t aModifiers,
                                 int32_t aLineOrPageDeltaX,
                                 int32_t aLineOrPageDeltaY, uint32_t aOptions) {
  // get the widget to send the event to
  nsPoint offset;
  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
  if (!widget) {
    return NS_ERROR_NULL_POINTER;
  }

  WidgetWheelEvent wheelEvent(true, eWheel, widget);
  wheelEvent.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
  wheelEvent.mDeltaX = aDeltaX;
  wheelEvent.mDeltaY = aDeltaY;
  wheelEvent.mDeltaZ = aDeltaZ;
  wheelEvent.mDeltaMode = aDeltaMode;
  wheelEvent.mIsMomentum = (aOptions & WHEEL_EVENT_CAUSED_BY_MOMENTUM) != 0;
  wheelEvent.mIsNoLineOrPageDelta =
      (aOptions & WHEEL_EVENT_CAUSED_BY_NO_LINE_OR_PAGE_DELTA_DEVICE) != 0;
  wheelEvent.mCustomizedByUserPrefs =
      (aOptions & WHEEL_EVENT_CUSTOMIZED_BY_USER_PREFS) != 0;
  wheelEvent.mLineOrPageDeltaX = aLineOrPageDeltaX;
  wheelEvent.mLineOrPageDeltaY = aLineOrPageDeltaY;

  nsPresContext* presContext = GetPresContext();
  NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);

  wheelEvent.mRefPoint =
      nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);

  if (StaticPrefs::test_events_async_enabled()) {
    widget->DispatchInputEvent(&wheelEvent);
  } else {
    nsEventStatus status = nsEventStatus_eIgnore;
    nsresult rv = widget->DispatchEvent(&wheelEvent, status);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  if (widget->AsyncPanZoomEnabled()) {
    // Computing overflow deltas is not compatible with APZ, so if APZ is
    // enabled, we skip testing it.
    return NS_OK;
  }

  bool failedX = false;
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_ZERO) &&
      wheelEvent.mOverflowDeltaX != 0) {
    failedX = true;
  }
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_POSITIVE) &&
      wheelEvent.mOverflowDeltaX <= 0) {
    failedX = true;
  }
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_NEGATIVE) &&
      wheelEvent.mOverflowDeltaX >= 0) {
    failedX = true;
  }
  bool failedY = false;
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_ZERO) &&
      wheelEvent.mOverflowDeltaY != 0) {
    failedY = true;
  }
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_POSITIVE) &&
      wheelEvent.mOverflowDeltaY <= 0) {
    failedY = true;
  }
  if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_NEGATIVE) &&
      wheelEvent.mOverflowDeltaY >= 0) {
    failedY = true;
  }

#ifdef DEBUG
  if (failedX) {
    nsPrintfCString debugMsg("SendWheelEvent(): unexpected mOverflowDeltaX: %f",
                             wheelEvent.mOverflowDeltaX);
    NS_WARNING(debugMsg.get());
  }
  if (failedY) {
    nsPrintfCString debugMsg("SendWheelEvent(): unexpected mOverflowDeltaY: %f",
                             wheelEvent.mOverflowDeltaY);
    NS_WARNING(debugMsg.get());
  }
#endif

  return (!failedX && !failedY) ? NS_OK : NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendTouchEvent(
    const nsAString& aType, const nsTArray<uint32_t>& aIdentifiers,
    const nsTArray<int32_t>& aXs, const nsTArray<int32_t>& aYs,
    const nsTArray<uint32_t>& aRxs, const nsTArray<uint32_t>& aRys,
    const nsTArray<float>& aRotationAngles, const nsTArray<float>& aForces,
    const nsTArray<int32_t>& aTiltXs, const nsTArray<int32_t>& aTiltYs,
    const nsTArray<int32_t>& aTwists, int32_t aModifiers,
    bool aIgnoreRootScrollFrame, bool* aPreventDefault) {
  return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
                              aRotationAngles, aForces, aTiltXs, aTiltYs,
                              aTwists, aModifiers, aIgnoreRootScrollFrame,
                              /* aIsPen */ false,
                              /* aToWindow */ false, aPreventDefault);
}

NS_IMETHODIMP
nsDOMWindowUtils::SendTouchEventAsPen(
    const nsAString& aType, uint32_t aIdentifier, int32_t aX, int32_t aY,
    uint32_t aRx, uint32_t aRy, float aRotationAngle, float aForce,
    int32_t aTiltX, int32_t aTiltY, int32_t aTwist, int32_t aModifier,
    bool aIgnoreRootScrollFrame, bool* aPreventDefault) {
  return SendTouchEventCommon(
      aType, nsTArray{aIdentifier}, nsTArray{aX}, nsTArray{aY}, nsTArray{aRx},
      nsTArray{aRy}, nsTArray{aRotationAngle}, nsTArray{aForce},
      nsTArray{aTiltX}, nsTArray{aTiltY}, nsTArray{aTwist}, aModifier,
      aIgnoreRootScrollFrame,
      /* aIsPen */ true,
      /* aToWindow */ false, aPreventDefault);
}

NS_IMETHODIMP
nsDOMWindowUtils::SendTouchEventToWindow(
    const nsAString& aType, const nsTArray<uint32_t>& aIdentifiers,
    const nsTArray<int32_t>& aXs, const nsTArray<int32_t>& aYs,
    const nsTArray<uint32_t>& aRxs, const nsTArray<uint32_t>& aRys,
    const nsTArray<float>& aRotationAngles, const nsTArray<float>& aForces,
    const nsTArray<int32_t>& aTiltXs, const nsTArray<int32_t>& aTiltYs,
    const nsTArray<int32_t>& aTwists, int32_t aModifiers,
    bool aIgnoreRootScrollFrame, bool* aPreventDefault) {
  return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
                              aRotationAngles, aForces, aTiltXs, aTiltYs,
                              aTwists, aModifiers, aIgnoreRootScrollFrame,
                              /* aIsPen */ false,
                              /* aToWindow */ true, aPreventDefault);
}

nsresult nsDOMWindowUtils::SendTouchEventCommon(
    const nsAString& aType, const nsTArray<uint32_t>& aIdentifiers,
    const nsTArray<int32_t>& aXs, const nsTArray<int32_t>& aYs,
    const nsTArray<uint32_t>& aRxs, const nsTArray<uint32_t>& aRys,
    const nsTArray<float>& aRotationAngles, const nsTArray<float>& aForces,
    const nsTArray<int32_t>& aTiltXs, const nsTArray<int32_t>& aTiltYs,
    const nsTArray<int32_t>& aTwists, int32_t aModifiers,
    bool aIgnoreRootScrollFrame, bool aIsPen, bool aToWindow,
    bool* aPreventDefault) {
  // get the widget to send the event to
  nsPoint offset;
  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
  if (!widget) {
    return NS_ERROR_NULL_POINTER;
  }
  EventMessage msg;
  if (aType.EqualsLiteral("touchstart")) {
    msg = eTouchStart;
  } else if (aType.EqualsLiteral("touchmove")) {
    msg = eTouchMove;
  } else if (aType.EqualsLiteral("touchend")) {
    msg = eTouchEnd;
  } else if (aType.EqualsLiteral("touchcancel")) {
    msg = eTouchCancel;
  } else {
    return NS_ERROR_UNEXPECTED;
  }
  WidgetTouchEvent event(true, msg, widget);
  event.mFlags.mIsSynthesizedForTests = true;
  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
  if (aIsPen) {
    event.mInputSource = MouseEvent_Binding::MOZ_SOURCE_PEN;
  }

  nsPresContext* presContext = GetPresContext();
  if (!presContext) {
    return NS_ERROR_FAILURE;
  }
  uint32_t count = aIdentifiers.Length();
  if (aXs.Length() != count || aYs.Length() != count ||
      aRxs.Length() != count || aRys.Length() != count ||
      aRotationAngles.Length() != count || aForces.Length() != count) {
    return NS_ERROR_INVALID_ARG;
  }
  event.mTouches.SetCapacity(count);
  for (uint32_t i = 0; i < count; ++i) {
    LayoutDeviceIntPoint pt = nsContentUtils::ToWidgetPoint(
        CSSPoint(aXs[i], aYs[i]), offset, presContext);
    LayoutDeviceIntPoint radius = LayoutDeviceIntPoint::FromAppUnitsRounded(
        CSSPoint::ToAppUnits(CSSPoint(aRxs[i], aRys[i])),
        presContext->AppUnitsPerDevPixel());

    RefPtr<Touch> t = new Touch(aIdentifiers[i], pt, radius, aRotationAngles[i],
                                aForces[i], aTiltXs[i], aTiltYs[i], aTwists[i]);

    event.mTouches.AppendElement(t);
  }

  nsEventStatus status = nsEventStatus_eIgnore;
  if (aToWindow) {
    RefPtr<PresShell> presShell;
    nsView* view = nsContentUtils::GetViewToDispatchEvent(
        presContext, getter_AddRefs(presShell));
    if (!presShell || !view) {
      return NS_ERROR_FAILURE;
    }
    *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
    return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
  }

  if (StaticPrefs::test_events_async_enabled()) {
    status = widget->DispatchInputEvent(&event).mContentStatus;
  } else {
    nsresult rv = widget->DispatchEvent(&event, status);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  if (aPreventDefault) {
    *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
  }
  return NS_OK;
}

static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::CAPS_LOCK) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_CAPS_LOCK),
    "Need to sync CapsLock value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::NUM_LOCK) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_NUM_LOCK),
    "Need to sync NumLock value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::SHIFT_L) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_SHIFT_LEFT),
    "Need to sync ShiftLeft value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::SHIFT_R) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_SHIFT_RIGHT),
    "Need to sync ShiftRight value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::CTRL_L) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_CONTROL_LEFT),
    "Need to sync ControlLeft value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::CTRL_R) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_CONTROL_RIGHT),
    "Need to sync ControlRight value between nsIWidget::Modifiers "
    "and nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::ALT_L) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_ALT_LEFT),
    "Need to sync AltLeft value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::ALT_R) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_ALT_RIGHT),
    "Need to sync AltRight value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::COMMAND_L) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_COMMAND_LEFT),
    "Need to sync CommandLeft value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::COMMAND_R) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_COMMAND_RIGHT),
    "Need to sync CommandRight value between nsIWidget::Modifiers "
    "and nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::HELP) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_HELP),
    "Need to sync Help value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::ALTGRAPH) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_ALT_GRAPH),
    "Need to sync AltGraph value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(
    static_cast<uint32_t>(nsIWidget::Modifiers::FUNCTION) ==
        static_cast<uint32_t>(nsIDOMWindowUtils::NATIVE_MODIFIER_FUNCTION),
    "Need to sync Function value between nsIWidget::Modifiers and "
    "nsIDOMWindowUtils");
static_assert(static_cast<uint32_t>(nsIWidget::Modifiers::NUMERIC_KEY_PAD) ==
                  static_cast<uint32_t>(
                      nsIDOMWindowUtils::NATIVE_MODIFIER_NUMERIC_KEY_PAD),
              "Need to sync NumericKeyPad value between nsIWidget::Modifiers "
              "and nsIDOMWindowUtils");

static nsIWidget::Modifiers GetWidgetModifiers(uint32_t aNativeModifiers) {
  nsIWidget::Modifiers widgetModifiers = static_cast<nsIWidget::Modifiers>(
      aNativeModifiers &
      (nsIWidget::Modifiers::CAPS_LOCK | nsIWidget::Modifiers::NUM_LOCK |
       nsIWidget::Modifiers::SHIFT_L | nsIWidget::Modifiers::SHIFT_R |
       nsIWidget::Modifiers::CTRL_L | nsIWidget::Modifiers::CTRL_R |
       nsIWidget::Modifiers::ALT_L | nsIWidget::Modifiers::ALT_R |
       nsIWidget::Modifiers::COMMAND_L | nsIWidget::Modifiers::COMMAND_R |
       nsIWidget::Modifiers::HELP | nsIWidget::Modifiers::ALTGRAPH |
       nsIWidget::Modifiers::FUNCTION | nsIWidget::Modifiers::NUMERIC_KEY_PAD));
  NS_ASSERTION(static_cast<uint32_t>(widgetModifiers) == aNativeModifiers,
               "Invalid value is specified to the native modifiers");
  return widgetModifiers;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeKeyEvent(int32_t aNativeKeyboardLayout,
                                     int32_t aNativeKeyCode,
                                     uint32_t aModifiers,
                                     const nsAString& aCharacters,
                                     const nsAString& aUnmodifiedCharacters,
                                     nsIObserver* aObserver) {
  // get the widget to send the event to
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) return NS_ERROR_FAILURE;

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<int32_t, int32_t, uint32_t, nsString, nsString,
                        nsIObserver*>(
          "nsIWidget::SynthesizeNativeKeyEvent", widget,
          &nsIWidget::SynthesizeNativeKeyEvent, aNativeKeyboardLayout,
          aNativeKeyCode, static_cast<uint32_t>(GetWidgetModifiers(aModifiers)),
          aCharacters, aUnmodifiedCharacters, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeMouseEvent(int32_t aScreenX, int32_t aScreenY,
                                       uint32_t aNativeMessage, int16_t aButton,
                                       uint32_t aModifierFlags,
                                       Element* aElementOnWidget,
                                       nsIObserver* aObserver) {
  // get the widget to send the event to
  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElementOnWidget);
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  nsIWidget::NativeMouseMessage message;
  switch (aNativeMessage) {
    case NATIVE_MOUSE_MESSAGE_BUTTON_DOWN:
      message = nsIWidget::NativeMouseMessage::ButtonDown;
      break;
    case NATIVE_MOUSE_MESSAGE_BUTTON_UP:
      message = nsIWidget::NativeMouseMessage::ButtonUp;
      break;
    case NATIVE_MOUSE_MESSAGE_MOVE:
      message = nsIWidget::NativeMouseMessage::Move;
      break;
    case NATIVE_MOUSE_MESSAGE_ENTER_WINDOW:
      message = nsIWidget::NativeMouseMessage::EnterWindow;
      break;
    case NATIVE_MOUSE_MESSAGE_LEAVE_WINDOW:
      message = nsIWidget::NativeMouseMessage::LeaveWindow;
      break;
    default:
      return NS_ERROR_INVALID_ARG;
  }

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<LayoutDeviceIntPoint, nsIWidget::NativeMouseMessage,
                        MouseButton, nsIWidget::Modifiers, nsIObserver*>(
          "nsIWidget::SynthesizeNativeMouseEvent", widget,
          &nsIWidget::SynthesizeNativeMouseEvent,
          LayoutDeviceIntPoint(aScreenX, aScreenY), message,
          static_cast<MouseButton>(aButton), GetWidgetModifiers(aModifierFlags),
          aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeMouseScrollEvent(
    int32_t aScreenX, int32_t aScreenY, uint32_t aNativeMessage, double aDeltaX,
    double aDeltaY, double aDeltaZ, uint32_t aModifierFlags,
    uint32_t aAdditionalFlags, Element* aElement, nsIObserver* aObserver) {
  // get the widget to send the event to
  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<mozilla::LayoutDeviceIntPoint, uint32_t, double, double,
                        double, uint32_t, uint32_t, nsIObserver*>(
          "nsIWidget::SynthesizeNativeMouseScrollEvent", widget,
          &nsIWidget::SynthesizeNativeMouseScrollEvent,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aNativeMessage, aDeltaX,
          aDeltaY, aDeltaZ, aModifierFlags, aAdditionalFlags, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeTouchPoint(uint32_t aPointerId,
                                       uint32_t aTouchState, int32_t aScreenX,
                                       int32_t aScreenY, double aPressure,
                                       uint32_t aOrientation,
                                       nsIObserver* aObserver,
                                       Element* aElement) {
  // FYI: This was designed for automated tests, but currently, this is used by
  //      DevTools to emulate touch events from mouse events in the responsive
  //      design mode.

  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  if (aPressure < 0 || aPressure > 1 || aOrientation > 359) {
    return NS_ERROR_INVALID_ARG;
  }

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<uint32_t, nsIWidget::TouchPointerState,
                        LayoutDeviceIntPoint, double, uint32_t, nsIObserver*>(
          "nsIWidget::SynthesizeNativeTouchPoint", widget,
          &nsIWidget::SynthesizeNativeTouchPoint, aPointerId,
          (nsIWidget::TouchPointerState)aTouchState,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aPressure, aOrientation,
          aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeTouchpadPinch(uint32_t aEventPhase, float aScale,
                                          int32_t aScreenX, int32_t aScreenY,
                                          int32_t aModifierFlags) {
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }
  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<nsIWidget::TouchpadGesturePhase, float,
                        LayoutDeviceIntPoint, int32_t>(
          "nsIWidget::SynthesizeNativeTouchPadPinch", widget,
          &nsIWidget::SynthesizeNativeTouchPadPinch,
          (nsIWidget::TouchpadGesturePhase)aEventPhase, aScale,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aModifierFlags)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeTouchTap(int32_t aScreenX, int32_t aScreenY,
                                     bool aLongTap, nsIObserver* aObserver) {
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<LayoutDeviceIntPoint, bool, nsIObserver*>(
          "nsIWidget::SynthesizeNativeTouchTap", widget,
          &nsIWidget::SynthesizeNativeTouchTap,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aLongTap, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativePenInput(uint32_t aPointerId,
                                     uint32_t aPointerState, int32_t aScreenX,
                                     int32_t aScreenY, double aPressure,
                                     uint32_t aRotation, int32_t aTiltX,
                                     int32_t aTiltY, int32_t aButton,
                                     nsIObserver* aObserver,
                                     Element* aElement) {
  nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  if (aPressure < 0 || aPressure > 1 || aRotation > 359 || aTiltX < -90 ||
      aTiltX > 90 || aTiltY < -90 || aTiltY > 90) {
    return NS_ERROR_INVALID_ARG;
  }

  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<uint32_t, nsIWidget::TouchPointerState,
                        LayoutDeviceIntPoint, double, uint32_t, int32_t,
                        int32_t, int32_t, nsIObserver*>(
          "nsIWidget::SynthesizeNativePenInput", widget,
          &nsIWidget::SynthesizeNativePenInput, aPointerId,
          (nsIWidget::TouchPointerState)aPointerState,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aPressure, aRotation,
          aTiltX, aTiltY, aButton, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeTouchpadDoubleTap(int32_t aScreenX,
                                              int32_t aScreenY,
                                              int32_t aModifierFlags) {
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  MOZ_ASSERT(aModifierFlags >= 0);
  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<LayoutDeviceIntPoint, uint32_t>(
          "nsIWidget::SynthesizeNativeTouchpadDoubleTap", widget,
          &nsIWidget::SynthesizeNativeTouchpadDoubleTap,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aModifierFlags)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendNativeTouchpadPan(uint32_t aEventPhase, int32_t aScreenX,
                                        int32_t aScreenY, double aDeltaX,
                                        double aDeltaY, int32_t aModifierFlags,
                                        nsIObserver* aObserver) {
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  MOZ_ASSERT(aModifierFlags >= 0);
  NS_DispatchToMainThread(NativeInputRunnable::Create(
      NewRunnableMethod<nsIWidget::TouchpadGesturePhase, LayoutDeviceIntPoint,
                        double, double, uint32_t, nsIObserver*>(
          "nsIWidget::SynthesizeNativeTouchpadPan", widget,
          &nsIWidget::SynthesizeNativeTouchpadPan,
          (nsIWidget::TouchpadGesturePhase)aEventPhase,
          LayoutDeviceIntPoint(aScreenX, aScreenY), aDeltaX, aDeltaY,
          aModifierFlags, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SuppressAnimation(bool aSuppress) {
  nsIWidget* widget = GetWidget();
  if (widget) {
    widget->SuppressAnimation(aSuppress);
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::ClearSharedStyleSheetCache() {
  SharedStyleSheetCache::Clear();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::ClearSharedScriptCache() {
  SharedScriptCache::Clear();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetParsedStyleSheets(uint32_t* aSheets) {
  RefPtr<Document> doc = GetDocument();
  if (!doc) {
    return NS_ERROR_UNEXPECTED;
  }

  *aSheets = doc->CSSLoader()->ParsedSheetCount();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::ClearNativeTouchSequence(nsIObserver* aObserver) {
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  NS_DispatchToMainThread(
      NativeInputRunnable::Create(NewRunnableMethod<nsIObserver*>(
          "nsIWidget::ClearNativeTouchSequence", widget,
          &nsIWidget::ClearNativeTouchSequence, aObserver)));
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::ActivateNativeMenuItemAt(const nsAString& indexString) {
  // get the widget to send the event to
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) return NS_ERROR_FAILURE;

  return widget->ActivateNativeMenuItemAt(indexString);
}

NS_IMETHODIMP
nsDOMWindowUtils::ForceUpdateNativeMenuAt(const nsAString& indexString) {
  // get the widget to send the event to
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) return NS_ERROR_FAILURE;

  return widget->ForceUpdateNativeMenuAt(indexString);
}

NS_IMETHODIMP
nsDOMWindowUtils::GetSelectionAsPlaintext(nsAString& aResult) {
  // Get the widget to send the event to.
  nsCOMPtr<nsIWidget> widget = GetWidget();
  if (!widget) {
    return NS_ERROR_FAILURE;
  }

  return widget->GetSelectionAsPlaintext(aResult);
}

nsIWidget* nsDOMWindowUtils::GetWidget(nsPoint* aOffset) {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  if (window) {
    nsIDocShell* docShell = window->GetDocShell();
    if (docShell) {
      return nsContentUtils::GetWidget(docShell->GetPresShell(), aOffset);
    }
  }

  return nullptr;
}

nsIWidget* nsDOMWindowUtils::GetWidgetForElement(Element* aElement) {
  if (!aElement) {
    return GetWidget();
  }
  if (Document* doc = aElement->GetUncomposedDoc()) {
    if (PresShell* presShell = doc->GetPresShell()) {
      nsIFrame* frame = aElement->GetPrimaryFrame();
      if (!frame) {
        frame = presShell->GetRootFrame();
      }
      if (frame) {
        return frame->GetNearestWidget();
      }
    }
  }

  return nullptr;
}

NS_IMETHODIMP
nsDOMWindowUtils::GarbageCollect(nsICycleCollectorListener* aListener) {
  AUTO_PROFILER_LABEL("nsDOMWindowUtils::GarbageCollect", GCCC);

  nsJSContext::GarbageCollectNow(JS::GCReason::DOM_UTILS);
  nsJSContext::CycleCollectNow(CCReason::API, aListener);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::CycleCollect(nsICycleCollectorListener* aListener) {
  nsJSContext::CycleCollectNow(CCReason::API, aListener);
  return NS_OK;
}

static bool ParseGCReason(const nsACString& aStr, JS::GCReason* aReason,
                          JS::GCReason aDefault) {
  if (aStr.IsEmpty()) {
    *aReason = aDefault;
    return true;
  }
#define CHECK_REASON(name, _)         \
  if (aStr.EqualsIgnoreCase(#name)) { \
    *aReason = JS::GCReason::name;    \
    return true;                      \
  }
  GCREASONS(CHECK_REASON);
  return false;
}

NS_IMETHODIMP
nsDOMWindowUtils::RunNextCollectorTimer(const nsACString& aReason) {
  JS::GCReason reason;
  if (!ParseGCReason(aReason, &reason, JS::GCReason::DOM_WINDOW_UTILS)) {
    return NS_ERROR_INVALID_ARG;
  }

  nsJSContext::RunNextCollectorTimer(reason);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::PokeGC(const nsACString& aReason) {
  JS::GCReason reason;
  if (!ParseGCReason(aReason, &reason, JS::GCReason::DOM_WINDOW_UTILS)) {
    return NS_ERROR_INVALID_ARG;
  }

  nsJSContext::PokeGC(reason, nullptr);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SendSimpleGestureEvent(const nsAString& aType, float aX,
                                         float aY, uint32_t aDirection,
                                         double aDelta, int32_t aModifiers,
                                         uint32_t aClickCount) {
  // get the widget to send the event to
  nsPoint offset;
  nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
  if (!widget) return NS_ERROR_FAILURE;

  EventMessage msg;
  if (aType.EqualsLiteral("MozSwipeGestureMayStart")) {
    msg = eSwipeGestureMayStart;
  } else if (aType.EqualsLiteral("MozSwipeGestureStart")) {
    msg = eSwipeGestureStart;
  } else if (aType.EqualsLiteral("MozSwipeGestureUpdate")) {
    msg = eSwipeGestureUpdate;
  } else if (aType.EqualsLiteral("MozSwipeGestureEnd")) {
    msg = eSwipeGestureEnd;
  } else if (aType.EqualsLiteral("MozSwipeGesture")) {
    msg = eSwipeGesture;
  } else if (aType.EqualsLiteral("MozMagnifyGestureStart")) {
    msg = eMagnifyGestureStart;
  } else if (aType.EqualsLiteral("MozMagnifyGestureUpdate")) {
    msg = eMagnifyGestureUpdate;
  } else if (aType.EqualsLiteral("MozMagnifyGesture")) {
    msg = eMagnifyGesture;
  } else if (aType.EqualsLiteral("MozRotateGestureStart")) {
    msg = eRotateGestureStart;
  } else if (aType.EqualsLiteral("MozRotateGestureUpdate")) {
    msg = eRotateGestureUpdate;
  } else if (aType.EqualsLiteral("MozRotateGesture")) {
    msg = eRotateGesture;
  } else if (aType.EqualsLiteral("MozTapGesture")) {
    msg = eTapGesture;
  } else if (aType.EqualsLiteral("MozPressTapGesture")) {
    msg = ePressTapGesture;
  } else if (aType.EqualsLiteral("MozEdgeUIStarted")) {
    msg = eEdgeUIStarted;
  } else if (aType.EqualsLiteral("MozEdgeUICanceled")) {
    msg = eEdgeUICanceled;
  } else if (aType.EqualsLiteral("MozEdgeUICompleted")) {
    msg = eEdgeUICompleted;
  } else {
    return NS_ERROR_FAILURE;
  }

  WidgetSimpleGestureEvent event(true, msg, widget);
  event.mModifiers = nsContentUtils::GetWidgetModifiers(aModifiers);
  event.mDirection = aDirection;
  event.mDelta = aDelta;
  event.mClickCount = aClickCount;

  nsPresContext* presContext = GetPresContext();
  if (!presContext) return NS_ERROR_FAILURE;

  event.mRefPoint =
      nsContentUtils::ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);

  nsEventStatus status;
  return widget->DispatchEvent(&event, status);
}

NS_IMETHODIMP
nsDOMWindowUtils::ElementFromPoint(float aX, float aY,
                                   bool aIgnoreRootScrollFrame,
                                   bool aFlushLayout, Element** aReturn) {
  nsCOMPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  RefPtr<Element> el = doc->ElementFromPointHelper(
      aX, aY, aIgnoreRootScrollFrame, aFlushLayout, ViewportType::Layout);
  el.forget(aReturn);
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::NodesFromRect(float aX, float aY, float aTopSize,
                                float aRightSize, float aBottomSize,
                                float aLeftSize, bool aIgnoreRootScrollFrame,
                                bool aFlushLayout, bool aOnlyVisible,
                                float aVisibleThreshold,
                                nsINodeList** aReturn) {
  RefPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  auto list = MakeRefPtr<nsSimpleContentList>(doc);

  // The visible threshold was omitted or given a zero value (which makes no
  // sense), so give a reasonable default.
  if (aVisibleThreshold == 0.0f) {
    aVisibleThreshold = 1.0f;
  }

  AutoTArray<RefPtr<nsINode>, 8> nodes;
  doc->NodesFromRect(aX, aY, aTopSize, aRightSize, aBottomSize, aLeftSize,
                     aIgnoreRootScrollFrame, aFlushLayout, aOnlyVisible,
                     aVisibleThreshold, nodes);
  list->SetCapacity(nodes.Length());
  for (auto& node : nodes) {
    list->AppendElement(node->AsContent());
  }

  list.forget(aReturn);
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetTranslationNodes(nsINode* aRoot,
                                      nsITranslationNodeList** aRetVal) {
  NS_ENSURE_ARG_POINTER(aRetVal);
  nsCOMPtr<nsIContent> root = do_QueryInterface(aRoot);
  NS_ENSURE_STATE(root);
  nsCOMPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  if (root->OwnerDoc() != doc) {
    return NS_ERROR_DOM_WRONG_DOCUMENT_ERR;
  }

  nsTHashSet<nsIContent*> translationNodesHash(500);
  RefPtr<nsTranslationNodeList> list = new nsTranslationNodeList;

  uint32_t limit = 15000;

  // We begin iteration with content->GetNextNode because we want to explicitly
  // skip the root tag from being a translation node.
  nsIContent* content = root;
  while ((limit > 0) && (content = content->GetNextNode(root))) {
    if (!content->IsHTMLElement()) {
      continue;
    }

    // Skip elements that usually contain non-translatable text content.
    if (content->IsAnyOfHTMLElements(nsGkAtoms::script, nsGkAtoms::iframe,
                                     nsGkAtoms::frameset, nsGkAtoms::frame,
                                     nsGkAtoms::code, nsGkAtoms::noscript,
                                     nsGkAtoms::style)) {
      continue;
    }

    // An element is a translation node if it contains
    // at least one text node that has meaningful data
    // for translation
    for (nsIContent* child = content->GetFirstChild(); child;
         child = child->GetNextSibling()) {
      if (child->IsText() && child->GetAsText()->HasTextForTranslation()) {
        translationNodesHash.Insert(content);

        nsIFrame* frame = content->GetPrimaryFrame();
        bool isTranslationRoot = frame && frame->IsBlockFrameOrSubclass();
        if (!isTranslationRoot) {
          // If an element is not a block element, it still
          // can be considered a translation root if the parent
          // of this element didn't make into the list of nodes
          // to be translated.
          bool parentInList = false;
          nsIContent* parent = content->GetParent();
          if (parent) {
            parentInList = translationNodesHash.Contains(parent);
          }
          isTranslationRoot = !parentInList;
        }

        list->AppendElement(content, isTranslationRoot);
        --limit;
        break;
      }
    }
  }

  *aRetVal = list.forget().take();
  return NS_OK;
}

static already_AddRefed<DataSourceSurface> CanvasToDataSourceSurface(
    HTMLCanvasElement* aCanvas) {
  MOZ_ASSERT(aCanvas);
  SurfaceFromElementResult result = nsLayoutUtils::SurfaceFromElement(aCanvas);

  MOZ_ASSERT(result.GetSourceSurface());
  return result.GetSourceSurface()->GetDataSurface();
}

NS_IMETHODIMP
nsDOMWindowUtils::CompareCanvases(nsISupports* aCanvas1, nsISupports* aCanvas2,
                                  uint32_t* aMaxDifference, uint32_t* retVal) {
  nsCOMPtr<nsIContent> contentCanvas1 = do_QueryInterface(aCanvas1);
  nsCOMPtr<nsIContent> contentCanvas2 = do_QueryInterface(aCanvas2);
  auto* canvas1 = HTMLCanvasElement::FromNodeOrNull(contentCanvas1);
  auto* canvas2 = HTMLCanvasElement::FromNodeOrNull(contentCanvas2);

  if (NS_WARN_IF(!canvas1) || NS_WARN_IF(!canvas2)) {
    return NS_ERROR_FAILURE;
  }

  RefPtr<DataSourceSurface> img1 = CanvasToDataSourceSurface(canvas1);
  RefPtr<DataSourceSurface> img2 = CanvasToDataSourceSurface(canvas2);

  if (NS_WARN_IF(!img1) || NS_WARN_IF(!img2) ||
      NS_WARN_IF(img1->GetSize() != img2->GetSize())) {
    return NS_ERROR_FAILURE;
  }

  if (img1->Equals(img2)) {
    // They point to the same underlying content.
    return NS_OK;
  }

  DataSourceSurface::ScopedMap map1(img1, DataSourceSurface::READ);
  DataSourceSurface::ScopedMap map2(img2, DataSourceSurface::READ);

  if (NS_WARN_IF(!map1.IsMapped()) || NS_WARN_IF(!map2.IsMapped())) {
    return NS_ERROR_FAILURE;
  }

  int v;
  IntSize size = img1->GetSize();
  int32_t stride1 = map1.GetStride();
  int32_t stride2 = map2.GetStride();

  // we can optimize for the common all-pass case
  if (stride1 == stride2 && stride1 == size.width * 4) {
    v = memcmp(map1.GetData(), map2.GetData(), size.width * size.height * 4);
    if (v == 0) {
      if (aMaxDifference) *aMaxDifference = 0;
      *retVal = 0;
      return NS_OK;
    }
  }

  uint32_t dc = 0;
  uint32_t different = 0;

  for (int j = 0; j < size.height; j++) {
    unsigned char* p1 = map1.GetData() + j * stride1;
    unsigned char* p2 = map2.GetData() + j * stride2;
    v = memcmp(p1, p2, size.width * 4);

    if (v) {
      for (int i = 0; i < size.width; i++) {
        if (*(uint32_t*)p1 != *(uint32_t*)p2) {
          different++;

          dc = std::max((uint32_t)abs(p1[0] - p2[0]), dc);
          dc = std::max((uint32_t)abs(p1[1] - p2[1]), dc);
          dc = std::max((uint32_t)abs(p1[2] - p2[2]), dc);
          dc = std::max((uint32_t)abs(p1[3] - p2[3]), dc);
        }

        p1 += 4;
        p2 += 4;
      }
    }
  }

  if (aMaxDifference) *aMaxDifference = dc;

  *retVal = different;
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetIsMozAfterPaintPending(bool* aResult) {
  NS_ENSURE_ARG_POINTER(aResult);
  *aResult = false;
  nsPresContext* presContext = GetPresContext();
  if (!presContext) return NS_OK;
  *aResult = presContext->IsDOMPaintEventPending();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetIsWindowFullyOccluded(bool* aResult) {
  NS_ENSURE_ARG_POINTER(aResult);
  *aResult = false;
  if (nsIWidget* widget = GetWidget()) {
    *aResult = widget->IsFullyOccluded();
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetIsCompositorPaused(bool* aResult) {
  NS_ENSURE_ARG_POINTER(aResult);
  *aResult = false;
  CompositorBridgeChild* cbc = GetCompositorBridge();
  if (cbc) {
    *aResult = cbc->IsPaused();
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetIsInputTaskManagerSuspended(bool* aResult) {
  *aResult = InputTaskManager::Get()->IsSuspended();
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::DisableNonTestMouseEvents(bool aDisable) {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
  nsIDocShell* docShell = window->GetDocShell();
  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
  PresShell* presShell = docShell->GetPresShell();
  NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
  presShell->DisableNonTestMouseEvents(aDisable);
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::SuppressEventHandling(bool aSuppress) {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  NS_ENSURE_STATE(window);

  if (aSuppress) {
    window->SuppressEventHandling();
  } else {
    window->UnsuppressEventHandling();
  }

  return NS_OK;
}

static nsresult getScrollXYAppUnits(const nsWeakPtr& aWindow, bool aFlushLayout,
                                    nsPoint& aScrollPos) {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(aWindow);
  nsCOMPtr<Document> doc = window ? window->GetExtantDoc() : nullptr;
  NS_ENSURE_STATE(doc);

  if (aFlushLayout) {
    doc->FlushPendingNotifications(FlushType::Layout);
  }

  if (PresShell* presShell = doc->GetPresShell()) {
    ScrollContainerFrame* sf = presShell->GetRootScrollContainerFrame();
    if (sf) {
      aScrollPos = sf->GetScrollPosition();
    }
  }
  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetScrollXY(bool aFlushLayout, int32_t* aScrollX,
                              int32_t* aScrollY) {
  nsPoint scrollPos(0, 0);
  nsresult rv = getScrollXYAppUnits(mWindow, aFlushLayout, scrollPos);
  NS_ENSURE_SUCCESS(rv, rv);
  *aScrollX = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.x);
  *aScrollY = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.y);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetScrollXYFloat(bool aFlushLayout, float* aScrollX,
                                   float* aScrollY) {
  nsPoint scrollPos(0, 0);
  nsresult rv = getScrollXYAppUnits(mWindow, aFlushLayout, scrollPos);
  NS_ENSURE_SUCCESS(rv, rv);
  *aScrollX = nsPresContext::AppUnitsToFloatCSSPixels(scrollPos.x);
  *aScrollY = nsPresContext::AppUnitsToFloatCSSPixels(scrollPos.y);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::ScrollToVisual(float aOffsetX, float aOffsetY,
                                 int32_t aUpdateType, int32_t aScrollMode) {
  nsCOMPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  nsPresContext* presContext = doc->GetPresContext();
  NS_ENSURE_TRUE(presContext, NS_ERROR_NOT_AVAILABLE);

  // This should only be called on the root content document.
  NS_ENSURE_TRUE(presContext->IsRootContentDocumentCrossProcess(),
                 NS_ERROR_INVALID_ARG);

  FrameMetrics::ScrollOffsetUpdateType updateType;
  switch (aUpdateType) {
    case UPDATE_TYPE_RESTORE:
      updateType = FrameMetrics::eRestore;
      break;
    case UPDATE_TYPE_MAIN_THREAD:
      updateType = FrameMetrics::eMainThread;
      break;
    default:
      return NS_ERROR_INVALID_ARG;
  }

  ScrollMode scrollMode;
  switch (aScrollMode) {
    case SCROLL_MODE_INSTANT:
      scrollMode = ScrollMode::Instant;
      break;
    case SCROLL_MODE_SMOOTH:
      scrollMode = ScrollMode::SmoothMsd;
      break;
    default:
      return NS_ERROR_INVALID_ARG;
  }

  presContext->PresShell()->ScrollToVisual(
      CSSPoint::ToAppUnits(CSSPoint(aOffsetX, aOffsetY)), updateType,
      scrollMode);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetVisualViewportOffsetRelativeToLayoutViewport(
    float* aOffsetX, float* aOffsetY) {
  *aOffsetX = 0;
  *aOffsetY = 0;

  nsCOMPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  PresShell* presShell = doc->GetPresShell();
  NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_AVAILABLE);

  nsPoint offset = presShell->GetVisualViewportOffsetRelativeToLayoutViewport();
  *aOffsetX = nsPresContext::AppUnitsToFloatCSSPixels(offset.x);
  *aOffsetY = nsPresContext::AppUnitsToFloatCSSPixels(offset.y);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetVisualViewportOffset(int32_t* aOffsetX,
                                          int32_t* aOffsetY) {
  *aOffsetX = 0;
  *aOffsetY = 0;

  nsCOMPtr<Document> doc = GetDocument();
  NS_ENSURE_STATE(doc);

  PresShell* presShell = doc->GetPresShell();
  NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_AVAILABLE);

  nsPoint offset = presShell->GetVisualViewportOffset();
  *aOffsetX = nsPresContext::AppUnitsToIntCSSPixels(offset.x);
  *aOffsetY = nsPresContext::AppUnitsToIntCSSPixels(offset.y);

  return NS_OK;
}

NS_IMETHODIMP
nsDOMWindowUtils::TransformRectLayoutToVisual(float aX, float aY, float aWidth,
                                              float aHeight,
                                              DOMRect** aResult) {
  nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryReferent(mWindow);
  NS_ENSURE_STATE(window);

  PresShell* presShell = GetPresShell();
  NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_AVAILABLE);

--> --------------------

--> maximum size reached

--> --------------------

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