The Tor Browser: dom/base/nsDOMWindowUtils.cpp@b8a032363ba2 (annotated)

dom/base/nsDOMWindowUtils.cpp@b8a032363ba2 (annotated)

dom/base/nsDOMWindowUtils.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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 "mozilla/layers/CompositorChild.h"
 #include "mozilla/layers/LayerTransactionChild.h"
 #include "nsPresContext.h"
 #include "nsDOMClassInfoID.h"
 #include "nsError.h"
 #include "nsIDOMEvent.h"
 #include "nsQueryContentEventResult.h"
 #include "CompositionStringSynthesizer.h"
 #include "nsGlobalWindow.h"
 #include "nsIDocument.h"
 #include "nsFocusManager.h"
 #include "nsFrameManager.h"
 #include "nsRefreshDriver.h"
 #include "mozilla/dom/Touch.h"
 #include "nsIObjectLoadingContent.h"
 #include "nsFrame.h"
 #include "mozilla/layers/ShadowLayers.h"
 #include "nsIScrollableFrame.h"
 #include "nsContentUtils.h"
 #include "nsIFrame.h"
 #include "nsIWidget.h"
 #include "nsCharsetSource.h"
 #include "nsJSEnvironment.h"
 #include "nsJSUtils.h"
 #include "mozilla/EventStateManager.h"
 #include "mozilla/MiscEvents.h"
 #include "mozilla/MouseEvents.h"
 #include "mozilla/TextEvents.h"
 #include "mozilla/TouchEvents.h"
 #include "nsViewManager.h"
 #include "nsIDOMHTMLCanvasElement.h"
 #include "nsLayoutUtils.h"
 #include "nsComputedDOMStyle.h"
 #include "nsIPresShell.h"
 #include "nsStyleAnimation.h"
 #include "nsCSSProps.h"
 #include "nsDOMFile.h"
 #include "nsTArrayHelpers.h"
 #include "nsIDocShell.h"
 #include "nsIContentViewer.h"
 #include "nsIMarkupDocumentViewer.h"
 #include "mozilla/dom/DOMRect.h"
 #include <algorithm>
 #if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK)
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #endif
 #include "Layers.h"
 #include "mozilla/layers/ShadowLayers.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/file/FileHandle.h"
 #include "mozilla/dom/FileHandleBinding.h"
 #include "mozilla/dom/TabChild.h"
 #include "mozilla/dom/IDBFactoryBinding.h"
 #include "mozilla/dom/indexedDB/IndexedDatabaseManager.h"
 #include "mozilla/dom/quota/PersistenceType.h"
 #include "mozilla/dom/quota/QuotaManager.h"
 #include "nsDOMBlobBuilder.h"
 #include "nsPrintfCString.h"
 #include "nsViewportInfo.h"
 #include "nsIFormControl.h"
 #include "nsIScriptError.h"
 #include "nsIAppShell.h"
 #include "nsWidgetsCID.h"
 #include "FrameLayerBuilder.h"
 #include "nsDisplayList.h"
 #include "nsROCSSPrimitiveValue.h"
 #include "nsIBaseWindow.h"
 #include "nsIDocShellTreeOwner.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "GeckoProfiler.h"
 #include "mozilla/Preferences.h"
 #include "nsIContentIterator.h"
 #ifdef XP_WIN
 #undef GetClassName
 #endif
 using namespace mozilla;
 using namespace mozilla::dom;
 using namespace mozilla::layers;
 using namespace mozilla::widget;
 using namespace mozilla::gfx;
 class gfxContext;
 static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
 DOMCI_DATA(WindowUtils, nsDOMWindowUtils)
 NS_INTERFACE_MAP_BEGIN(nsDOMWindowUtils)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMWindowUtils)
   NS_INTERFACE_MAP_ENTRY(nsIDOMWindowUtils)
   NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(WindowUtils)
 NS_INTERFACE_MAP_END
 NS_IMPL_ADDREF(nsDOMWindowUtils)
 NS_IMPL_RELEASE(nsDOMWindowUtils)
 nsDOMWindowUtils::nsDOMWindowUtils(nsGlobalWindow *aWindow)
 {
   nsCOMPtr<nsISupports> supports = do_QueryObject(aWindow);
   mWindow = do_GetWeakReference(supports);
   NS_ASSERTION(aWindow->IsOuterWindow(), "How did that happen?");
 }
 nsDOMWindowUtils::~nsDOMWindowUtils()
 {
 }
 nsIPresShell*
 nsDOMWindowUtils::GetPresShell()
 {
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   if (!window)
     return nullptr;
   nsIDocShell *docShell = window->GetDocShell();
   if (!docShell)
     return nullptr;
   return docShell->GetPresShell();
 }
 nsPresContext*
 nsDOMWindowUtils::GetPresContext()
 {
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   if (!window)
     return nullptr;
   nsIDocShell *docShell = window->GetDocShell();
   if (!docShell)
     return nullptr;
   nsRefPtr<nsPresContext> presContext;
   docShell->GetPresContext(getter_AddRefs(presContext));
   return presContext;
 }
 nsIDocument*
 nsDOMWindowUtils::GetDocument()
 {
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   if (!window) {
     return nullptr;
   }
   return window->GetExtantDoc();
 }
 LayerTransactionChild*
 nsDOMWindowUtils::GetLayerTransaction()
 {
   nsIWidget* widget = GetWidget();
   if (!widget)
     return nullptr;
   LayerManager* manager = widget->GetLayerManager();
   if (!manager)
     return nullptr;
   ShadowLayerForwarder* forwarder = manager->AsShadowForwarder();
   return forwarder && forwarder->HasShadowManager() ?
          forwarder->GetShadowManager() :
          nullptr;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetImageAnimationMode(uint16_t *aMode)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   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)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsPresContext* presContext = GetPresContext();
   if (presContext) {
     presContext->SetImageAnimationMode(aMode);
     return NS_OK;
   }
   return NS_ERROR_NOT_AVAILABLE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetDocCharsetIsForced(bool *aIsForced)
 {
   *aIsForced = false;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIDocument* doc = GetDocument();
   *aIsForced = doc &&
     doc->GetDocumentCharacterSetSource() >= kCharsetFromParentForced;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetDocumentMetadata(const nsAString& aName,
                                       nsAString& aValue)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIDocument* doc = GetDocument();
   if (doc) {
     nsCOMPtr<nsIAtom> name = do_GetAtom(aName);
     doc->GetHeaderData(name, aValue);
     return NS_OK;
   }
   aValue.Truncate();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::Redraw(uint32_t aCount, uint32_t *aDurationOut)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (aCount == 0)
     aCount = 1;
   if (nsIPresShell* presShell = GetPresShell()) {
     nsIFrame *rootFrame = presShell->GetRootFrame();
     if (rootFrame) {
       PRIntervalTime iStart = PR_IntervalNow();
       for (uint32_t i = 0; i < aCount; i++)
         rootFrame->InvalidateFrame();
 #if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK)
       XSync(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), False);
 #endif
       *aDurationOut = PR_IntervalToMilliseconds(PR_IntervalNow() - iStart);
       return NS_OK;
     }
   }
   return NS_ERROR_FAILURE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetCSSViewport(float aWidthPx, float aHeightPx)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!(aWidthPx >= 0.0 && aHeightPx >= 0.0)) {
     return NS_ERROR_ILLEGAL_VALUE;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   nscoord width = nsPresContext::CSSPixelsToAppUnits(aWidthPx);
   nscoord height = nsPresContext::CSSPixelsToAppUnits(aHeightPx);
   presShell->ResizeReflowOverride(width, 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)
 {
   nsIDocument* doc = GetDocument();
   NS_ENSURE_STATE(doc);
   nsViewportInfo info = nsContentUtils::GetViewportInfo(doc, ScreenIntSize(aDisplayWidth, aDisplayHeight));
   *aDefaultZoom = info.GetDefaultZoom().scale;
   *aAllowZoom = info.IsZoomAllowed();
   *aMinZoom = info.GetMinZoom().scale;
   *aMaxZoom = info.GetMaxZoom().scale;
   *aWidth = info.GetSize().width;
   *aHeight = info.GetSize().height;
   *aAutoSize = info.IsAutoSizeEnabled();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetDisplayPortForElement(float aXPx, float aYPx,
                                            float aWidthPx, float aHeightPx,
                                            nsIDOMElement* aElement,
                                            uint32_t aPriority)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   if (!aElement) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
   if (content->GetCurrentDoc() != presShell->GetDocument()) {
     return NS_ERROR_INVALID_ARG;
   }
   DisplayPortPropertyData* currentData =
     static_cast<DisplayPortPropertyData*>(content->GetProperty(nsGkAtoms::DisplayPort));
   if (currentData && currentData->mPriority > aPriority) {
     return NS_OK;
   }
   nsRect displayport(nsPresContext::CSSPixelsToAppUnits(aXPx),
                      nsPresContext::CSSPixelsToAppUnits(aYPx),
                      nsPresContext::CSSPixelsToAppUnits(aWidthPx),
                      nsPresContext::CSSPixelsToAppUnits(aHeightPx));
   content->SetProperty(nsGkAtoms::DisplayPort,
                        new DisplayPortPropertyData(displayport, aPriority),
                        nsINode::DeleteProperty<DisplayPortPropertyData>);
   nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
   if (rootScrollFrame && content == rootScrollFrame->GetContent()) {
     // We are setting a root displayport for a document.
     // The pres shell needs a special flag set.
     presShell->SetIgnoreViewportScrolling(true);
   }
   nsIFrame* rootFrame = presShell->FrameManager()->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) {
         bool isRetainingManager;
         LayerManager* manager = widget->GetLayerManager(&isRetainingManager);
         if (isRetainingManager) {
           manager->BeginTransaction();
           nsLayoutUtils::PaintFrame(nullptr, rootFrame, nsRegion(), NS_RGB(255, 255, 255),
                                     nsLayoutUtils::PAINT_WIDGET_LAYERS |
                                     nsLayoutUtils::PAINT_EXISTING_TRANSACTION);
         }
       }
     }
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetDisplayPortMarginsForElement(float aLeftMargin,
                                                   float aTopMargin,
                                                   float aRightMargin,
                                                   float aBottomMargin,
                                                   uint32_t aAlignmentX,
                                                   uint32_t aAlignmentY,
                                                   nsIDOMElement* aElement,
                                                   uint32_t aPriority)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   if (!aElement) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
   if (content->GetCurrentDoc() != presShell->GetDocument()) {
     return NS_ERROR_INVALID_ARG;
   }
   // Note order change of arguments between our function signature and
   // LayerMargin constructor.
   LayerMargin displayportMargins(aTopMargin,
                                  aRightMargin,
                                  aBottomMargin,
                                  aLeftMargin);
   nsLayoutUtils::SetDisplayPortMargins(content, presShell, displayportMargins,
                                        aAlignmentX, aAlignmentY, aPriority);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetDisplayPortBaseForElement(int32_t aX,
                                                int32_t aY,
                                                int32_t aWidth,
                                                int32_t aHeight,
                                                nsIDOMElement* aElement)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   if (!aElement) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
   if (content->GetCurrentDoc() != presShell->GetDocument()) {
     return NS_ERROR_INVALID_ARG;
   }
   nsLayoutUtils::SetDisplayPortBase(content, nsRect(aX, aY, aWidth, aHeight));
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetCriticalDisplayPortForElement(float aXPx, float aYPx,
                                                    float aWidthPx, float aHeightPx,
                                                    nsIDOMElement* aElement)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   if (!aElement) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   if (!content) {
     return NS_ERROR_INVALID_ARG;
   }
   if (content->GetCurrentDoc() != presShell->GetDocument()) {
     return NS_ERROR_INVALID_ARG;
   }
   nsRect displayport;
   if (!nsLayoutUtils::GetDisplayPort(content, &displayport)) {
     return NS_ERROR_INVALID_ARG;
   }
   nsRect criticalDisplayport(nsPresContext::CSSPixelsToAppUnits(aXPx),
                              nsPresContext::CSSPixelsToAppUnits(aYPx),
                              nsPresContext::CSSPixelsToAppUnits(aWidthPx),
                              nsPresContext::CSSPixelsToAppUnits(aHeightPx));
   content->SetProperty(nsGkAtoms::CriticalDisplayPort, new nsRect(criticalDisplayport),
                        nsINode::DeleteProperty<nsRect>);
   nsIFrame* rootFrame = presShell->GetRootFrame();
   if (rootFrame) {
     rootFrame->InvalidateFrame();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetResolution(float aXResolution, float aYResolution)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
   if (sf) {
     sf->SetResolution(gfxSize(aXResolution, aYResolution));
     presShell->SetResolution(aXResolution, aYResolution);
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetResolution(float* aXResolution, float* aYResolution)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
   if (sf) {
     const gfxSize& res = sf->GetResolution();
     *aXResolution = res.width;
     *aYResolution = res.height;
   } else {
     *aXResolution = presShell->GetXResolution();
     *aYResolution = presShell->GetYResolution();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsResolutionSet(bool* aIsResolutionSet) {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   const nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
   *aIsResolutionSet = sf && sf->IsResolutionSet();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetIsFirstPaint(bool aIsFirstPaint)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (presShell) {
     presShell->SetIsFirstPaint(aIsFirstPaint);
     return NS_OK;
   }
   return NS_ERROR_FAILURE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsFirstPaint(bool *aIsFirstPaint)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (presShell) {
     *aIsFirstPaint = presShell->GetIsFirstPaint();
     return NS_OK;
   }
   return NS_ERROR_FAILURE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPresShellId(uint32_t *aPresShellId)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIPresShell* presShell = GetPresShell();
   if (presShell) {
     *aPresShellId = presShell->GetPresShellId();
     return NS_OK;
   }
   return NS_ERROR_FAILURE;
 }
 /* static */
 mozilla::Modifiers
 nsDOMWindowUtils::GetWidgetModifiers(int32_t aModifiers)
 {
   Modifiers result = 0;
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_SHIFT) {
     result |= mozilla::MODIFIER_SHIFT;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_CONTROL) {
     result |= mozilla::MODIFIER_CONTROL;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_ALT) {
     result |= mozilla::MODIFIER_ALT;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_META) {
     result |= mozilla::MODIFIER_META;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_ALTGRAPH) {
     result |= mozilla::MODIFIER_ALTGRAPH;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_CAPSLOCK) {
     result |= mozilla::MODIFIER_CAPSLOCK;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_FN) {
     result |= mozilla::MODIFIER_FN;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_NUMLOCK) {
     result |= mozilla::MODIFIER_NUMLOCK;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_SCROLLLOCK) {
     result |= mozilla::MODIFIER_SCROLLLOCK;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_SYMBOLLOCK) {
     result |= mozilla::MODIFIER_SYMBOLLOCK;
   }
   if (aModifiers & nsIDOMWindowUtils::MODIFIER_OS) {
     result |= mozilla::MODIFIER_OS;
   }
   return result;
 }
 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 aIsSynthesized,
                                  uint8_t aOptionalArgCount,
                                  bool *aPreventDefault)
 {
   return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
                               aIgnoreRootScrollFrame, aPressure,
                               aInputSourceArg, false, aPreventDefault,
                               aOptionalArgCount >= 4 ? aIsSynthesized : true);
 }
 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 aIsSynthesized,
                                          uint8_t aOptionalArgCount)
 {
   PROFILER_LABEL("nsDOMWindowUtils", "SendMouseEventToWindow");
   return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
                               aIgnoreRootScrollFrame, aPressure,
                               aInputSourceArg, true, nullptr,
                               aOptionalArgCount >= 4 ? aIsSynthesized : true);
 }
 static LayoutDeviceIntPoint
 ToWidgetPoint(const CSSPoint& aPoint, const nsPoint& aOffset,
               nsPresContext* aPresContext)
 {
   return LayoutDeviceIntPoint::FromAppUnitsRounded(
     CSSPoint::ToAppUnits(aPoint) + aOffset,
     aPresContext->AppUnitsPerDevPixel());
 }
 static inline int16_t
 GetButtonsFlagForButton(int32_t aButton)
 {
   switch (aButton) {
     case WidgetMouseEvent::eLeftButton:
       return WidgetMouseEvent::eLeftButtonFlag;
     case WidgetMouseEvent::eMiddleButton:
       return WidgetMouseEvent::eMiddleButtonFlag;
     case WidgetMouseEvent::eRightButton:
       return WidgetMouseEvent::eRightButtonFlag;
     case 4:
       return WidgetMouseEvent::e4thButtonFlag;
     case 5:
       return WidgetMouseEvent::e5thButtonFlag;
     default:
       NS_ERROR("Button not known.");
       return 0;
   }
 }
 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,
                                        bool aToWindow,
                                        bool *aPreventDefault,
                                        bool aIsSynthesized)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsPoint offset;
   nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
   if (!widget)
     return NS_ERROR_FAILURE;
   int32_t msg;
   bool contextMenuKey = false;
   if (aType.EqualsLiteral("mousedown"))
     msg = NS_MOUSE_BUTTON_DOWN;
   else if (aType.EqualsLiteral("mouseup"))
     msg = NS_MOUSE_BUTTON_UP;
   else if (aType.EqualsLiteral("mousemove"))
     msg = NS_MOUSE_MOVE;
   else if (aType.EqualsLiteral("mouseover"))
     msg = NS_MOUSE_ENTER;
   else if (aType.EqualsLiteral("mouseout"))
     msg = NS_MOUSE_EXIT;
   else if (aType.EqualsLiteral("contextmenu")) {
     msg = NS_CONTEXTMENU;
     contextMenuKey = (aButton == 0);
   } else if (aType.EqualsLiteral("MozMouseHittest"))
     msg = NS_MOUSE_MOZHITTEST;
   else
     return NS_ERROR_FAILURE;
   if (aInputSourceArg == nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN) {
     aInputSourceArg = nsIDOMMouseEvent::MOZ_SOURCE_MOUSE;
   }
   WidgetMouseEvent event(true, msg, widget, WidgetMouseEvent::eReal,
                          contextMenuKey ? WidgetMouseEvent::eContextMenuKey :
                                           WidgetMouseEvent::eNormal);
   event.modifiers = GetWidgetModifiers(aModifiers);
   event.button = aButton;
   event.buttons = GetButtonsFlagForButton(aButton);
   event.widget = widget;
   event.pressure = aPressure;
   event.inputSource = aInputSourceArg;
   event.clickCount = aClickCount;
   event.time = PR_IntervalNow();
   event.mFlags.mIsSynthesizedForTests = aIsSynthesized;
   nsPresContext* presContext = GetPresContext();
   if (!presContext)
     return NS_ERROR_FAILURE;
   event.refPoint = ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
   event.ignoreRootScrollFrame = aIgnoreRootScrollFrame;
   nsEventStatus status;
   if (aToWindow) {
     nsCOMPtr<nsIPresShell> presShell = presContext->PresShell();
     if (!presShell)
       return NS_ERROR_FAILURE;
     nsViewManager* viewManager = presShell->GetViewManager();
     if (!viewManager)
       return NS_ERROR_FAILURE;
     nsView* view = viewManager->GetRootView();
     if (!view)
       return NS_ERROR_FAILURE;
     status = nsEventStatus_eIgnore;
     return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
   }
   nsresult rv = widget->DispatchEvent(&event, status);
   *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
   return rv;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendPointerEvent(const nsAString& aType,
                                    float aX,
                                    float aY,
                                    int32_t aButton,
                                    int32_t aClickCount,
                                    int32_t aModifiers,
                                    bool aIgnoreRootScrollFrame,
                                    float aPressure,
                                    unsigned short aInputSourceArg,
                                    int32_t aPointerId,
                                    int32_t aWidth,
                                    int32_t aHeight,
                                    int32_t tiltX,
                                    int32_t tiltY,
                                    bool aIsPrimary,
                                    bool aIsSynthesized,
                                    uint8_t aOptionalArgCount,
                                    bool* aPreventDefault)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsPoint offset;
   nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   int32_t msg;
   if (aType.EqualsLiteral("pointerdown")) {
     msg = NS_POINTER_DOWN;
   } else if (aType.EqualsLiteral("pointerup")) {
     msg = NS_POINTER_UP;
   } else if (aType.EqualsLiteral("pointermove")) {
     msg = NS_POINTER_MOVE;
   } else if (aType.EqualsLiteral("pointerover")) {
     msg = NS_POINTER_OVER;
   } else if (aType.EqualsLiteral("pointerout")) {
     msg = NS_POINTER_OUT;
   } else {
     return NS_ERROR_FAILURE;
   }
   if (aInputSourceArg == nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN) {
     aInputSourceArg = nsIDOMMouseEvent::MOZ_SOURCE_MOUSE;
   }
   WidgetPointerEvent event(true, msg, widget);
   event.modifiers = GetWidgetModifiers(aModifiers);
   event.button = aButton;
   event.buttons = GetButtonsFlagForButton(aButton);
   event.widget = widget;
   event.pressure = aPressure;
   event.inputSource = aInputSourceArg;
   event.pointerId = aPointerId;
   event.width = aWidth;
   event.height = aHeight;
   event.tiltX = tiltX;
   event.tiltY = tiltY;
   event.isPrimary = aIsPrimary;
   event.clickCount = aClickCount;
   event.time = PR_IntervalNow();
   event.mFlags.mIsSynthesizedForTests = aOptionalArgCount >= 10 ? aIsSynthesized : true;
   nsPresContext* presContext = GetPresContext();
   if (!presContext) {
     return NS_ERROR_FAILURE;
   }
   event.refPoint = ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
   event.ignoreRootScrollFrame = aIgnoreRootScrollFrame;
   nsEventStatus status;
   nsresult rv = widget->DispatchEvent(&event, status);
   *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
   return rv;
 }
 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)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // 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, NS_WHEEL_WHEEL, widget);
   wheelEvent.modifiers = GetWidgetModifiers(aModifiers);
   wheelEvent.deltaX = aDeltaX;
   wheelEvent.deltaY = aDeltaY;
   wheelEvent.deltaZ = aDeltaZ;
   wheelEvent.deltaMode = aDeltaMode;
   wheelEvent.isMomentum =
     (aOptions & WHEEL_EVENT_CAUSED_BY_MOMENTUM) != 0;
   wheelEvent.isPixelOnlyDevice =
     (aOptions & WHEEL_EVENT_CAUSED_BY_PIXEL_ONLY_DEVICE) != 0;
   NS_ENSURE_TRUE(
     !wheelEvent.isPixelOnlyDevice ||
       aDeltaMode == nsIDOMWheelEvent::DOM_DELTA_PIXEL,
     NS_ERROR_INVALID_ARG);
   wheelEvent.customizedByUserPrefs =
     (aOptions & WHEEL_EVENT_CUSTOMIZED_BY_USER_PREFS) != 0;
   wheelEvent.lineOrPageDeltaX = aLineOrPageDeltaX;
   wheelEvent.lineOrPageDeltaY = aLineOrPageDeltaY;
   wheelEvent.widget = widget;
   wheelEvent.time = PR_Now() / 1000;
   nsPresContext* presContext = GetPresContext();
   NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
   wheelEvent.refPoint = ToWidgetPoint(CSSPoint(aX, aY), offset, presContext);
   nsEventStatus status;
   nsresult rv = widget->DispatchEvent(&wheelEvent, status);
   NS_ENSURE_SUCCESS(rv, rv);
   bool failedX = false;
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_ZERO) &&
       wheelEvent.overflowDeltaX != 0) {
     failedX = true;
   }
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_POSITIVE) &&
       wheelEvent.overflowDeltaX <= 0) {
     failedX = true;
   }
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_X_NEGATIVE) &&
       wheelEvent.overflowDeltaX >= 0) {
     failedX = true;
   }
   bool failedY = false;
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_ZERO) &&
       wheelEvent.overflowDeltaY != 0) {
     failedY = true;
   }
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_POSITIVE) &&
       wheelEvent.overflowDeltaY <= 0) {
     failedY = true;
   }
   if ((aOptions & WHEEL_EVENT_EXPECTED_OVERFLOW_DELTA_Y_NEGATIVE) &&
       wheelEvent.overflowDeltaY >= 0) {
     failedY = true;
   }
 #ifdef DEBUG
   if (failedX) {
     nsPrintfCString debugMsg("SendWheelEvent(): unexpected overflowDeltaX: %f",
                              wheelEvent.overflowDeltaX);
     NS_WARNING(debugMsg.get());
   }
   if (failedY) {
     nsPrintfCString debugMsg("SendWheelEvent(): unexpected overflowDeltaY: %f",
                              wheelEvent.overflowDeltaY);
     NS_WARNING(debugMsg.get());
   }
 #endif
   return (!failedX && !failedY) ? NS_OK : NS_ERROR_FAILURE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendTouchEvent(const nsAString& aType,
                                  uint32_t *aIdentifiers,
                                  int32_t *aXs,
                                  int32_t *aYs,
                                  uint32_t *aRxs,
                                  uint32_t *aRys,
                                  float *aRotationAngles,
                                  float *aForces,
                                  uint32_t aCount,
                                  int32_t aModifiers,
                                  bool aIgnoreRootScrollFrame,
                                  bool *aPreventDefault)
 {
   return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
                               aRotationAngles, aForces, aCount, aModifiers,
                               aIgnoreRootScrollFrame, false, aPreventDefault);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendTouchEventToWindow(const nsAString& aType,
                                          uint32_t* aIdentifiers,
                                          int32_t* aXs,
                                          int32_t* aYs,
                                          uint32_t* aRxs,
                                          uint32_t* aRys,
                                          float* aRotationAngles,
                                          float* aForces,
                                          uint32_t aCount,
                                          int32_t aModifiers,
                                          bool aIgnoreRootScrollFrame,
                                          bool* aPreventDefault)
 {
   return SendTouchEventCommon(aType, aIdentifiers, aXs, aYs, aRxs, aRys,
                               aRotationAngles, aForces, aCount, aModifiers,
                               aIgnoreRootScrollFrame, true, aPreventDefault);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendTouchEventCommon(const nsAString& aType,
                                        uint32_t* aIdentifiers,
                                        int32_t* aXs,
                                        int32_t* aYs,
                                        uint32_t* aRxs,
                                        uint32_t* aRys,
                                        float* aRotationAngles,
                                        float* aForces,
                                        uint32_t aCount,
                                        int32_t aModifiers,
                                        bool aIgnoreRootScrollFrame,
                                        bool aToWindow,
                                        bool* aPreventDefault)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsPoint offset;
   nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
   if (!widget) {
     return NS_ERROR_NULL_POINTER;
   }
   int32_t msg;
   if (aType.EqualsLiteral("touchstart")) {
     msg = NS_TOUCH_START;
   } else if (aType.EqualsLiteral("touchmove")) {
     msg = NS_TOUCH_MOVE;
   } else if (aType.EqualsLiteral("touchend")) {
     msg = NS_TOUCH_END;
   } else if (aType.EqualsLiteral("touchcancel")) {
     msg = NS_TOUCH_CANCEL;
   } else {
     return NS_ERROR_UNEXPECTED;
   }
   WidgetTouchEvent event(true, msg, widget);
   event.modifiers = GetWidgetModifiers(aModifiers);
   event.widget = widget;
   event.time = PR_Now();
   nsPresContext* presContext = GetPresContext();
   if (!presContext) {
     return NS_ERROR_FAILURE;
   }
   event.touches.SetCapacity(aCount);
   for (uint32_t i = 0; i < aCount; ++i) {
     LayoutDeviceIntPoint pt =
       ToWidgetPoint(CSSPoint(aXs[i], aYs[i]), offset, presContext);
     nsRefPtr<Touch> t = new Touch(aIdentifiers[i],
                                   LayoutDeviceIntPoint::ToUntyped(pt),
                                   nsIntPoint(aRxs[i], aRys[i]),
                                   aRotationAngles[i],
                                   aForces[i]);
     event.touches.AppendElement(t);
   }
   nsEventStatus status;
   if (aToWindow) {
     nsCOMPtr<nsIPresShell> presShell = presContext->PresShell();
     if (!presShell) {
       return NS_ERROR_FAILURE;
     }
     nsViewManager* viewManager = presShell->GetViewManager();
     if (!viewManager) {
       return NS_ERROR_FAILURE;
     }
     nsView* view = viewManager->GetRootView();
     if (!view) {
       return NS_ERROR_FAILURE;
     }
     status = nsEventStatus_eIgnore;
     *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
     return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
   }
   nsresult rv = widget->DispatchEvent(&event, status);
   *aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
   return rv;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendKeyEvent(const nsAString& aType,
                                int32_t aKeyCode,
                                int32_t aCharCode,
                                int32_t aModifiers,
                                uint32_t aAdditionalFlags,
                                bool* aDefaultActionTaken)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   int32_t msg;
   if (aType.EqualsLiteral("keydown"))
     msg = NS_KEY_DOWN;
   else if (aType.EqualsLiteral("keyup"))
     msg = NS_KEY_UP;
   else if (aType.EqualsLiteral("keypress"))
     msg = NS_KEY_PRESS;
   else
     return NS_ERROR_FAILURE;
   WidgetKeyboardEvent event(true, msg, widget);
   event.modifiers = GetWidgetModifiers(aModifiers);
   if (msg == NS_KEY_PRESS) {
     event.keyCode = aCharCode ? 0 : aKeyCode;
     event.charCode = aCharCode;
   } else {
     event.keyCode = aKeyCode;
     event.charCode = 0;
   }
   uint32_t locationFlag = (aAdditionalFlags &
     (KEY_FLAG_LOCATION_STANDARD | KEY_FLAG_LOCATION_LEFT |
      KEY_FLAG_LOCATION_RIGHT | KEY_FLAG_LOCATION_NUMPAD |
      KEY_FLAG_LOCATION_MOBILE | KEY_FLAG_LOCATION_JOYSTICK));
   switch (locationFlag) {
     case KEY_FLAG_LOCATION_STANDARD:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD;
       break;
     case KEY_FLAG_LOCATION_LEFT:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_LEFT;
       break;
     case KEY_FLAG_LOCATION_RIGHT:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_RIGHT;
       break;
     case KEY_FLAG_LOCATION_NUMPAD:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
       break;
     case KEY_FLAG_LOCATION_MOBILE:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_MOBILE;
       break;
     case KEY_FLAG_LOCATION_JOYSTICK:
       event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_JOYSTICK;
       break;
     default:
       if (locationFlag != 0) {
         return NS_ERROR_INVALID_ARG;
       }
       // If location flag isn't set, choose the location from keycode.
       switch (aKeyCode) {
         case nsIDOMKeyEvent::DOM_VK_NUMPAD0:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD1:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD2:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD3:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD4:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD5:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD6:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD7:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD8:
         case nsIDOMKeyEvent::DOM_VK_NUMPAD9:
         case nsIDOMKeyEvent::DOM_VK_MULTIPLY:
         case nsIDOMKeyEvent::DOM_VK_ADD:
         case nsIDOMKeyEvent::DOM_VK_SEPARATOR:
         case nsIDOMKeyEvent::DOM_VK_SUBTRACT:
         case nsIDOMKeyEvent::DOM_VK_DECIMAL:
         case nsIDOMKeyEvent::DOM_VK_DIVIDE:
           event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_NUMPAD;
           break;
         case nsIDOMKeyEvent::DOM_VK_SHIFT:
         case nsIDOMKeyEvent::DOM_VK_CONTROL:
         case nsIDOMKeyEvent::DOM_VK_ALT:
         case nsIDOMKeyEvent::DOM_VK_META:
           event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_LEFT;
           break;
         default:
           event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_STANDARD;
           break;
       }
       break;
   }
   event.refPoint.x = event.refPoint.y = 0;
   event.time = PR_IntervalNow();
   event.mFlags.mIsSynthesizedForTests = true;
   if (aAdditionalFlags & KEY_FLAG_PREVENT_DEFAULT) {
     event.mFlags.mDefaultPrevented = true;
   }
   nsEventStatus status;
   nsresult rv = widget->DispatchEvent(&event, status);
   NS_ENSURE_SUCCESS(rv, rv);
   *aDefaultActionTaken = (status != nsEventStatus_eConsumeNoDefault);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendNativeKeyEvent(int32_t aNativeKeyboardLayout,
                                      int32_t aNativeKeyCode,
                                      int32_t aModifiers,
                                      const nsAString& aCharacters,
                                      const nsAString& aUnmodifiedCharacters)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   return widget->SynthesizeNativeKeyEvent(aNativeKeyboardLayout, aNativeKeyCode,
                                           aModifiers, aCharacters, aUnmodifiedCharacters);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendNativeMouseEvent(int32_t aScreenX,
                                        int32_t aScreenY,
                                        int32_t aNativeMessage,
                                        int32_t aModifierFlags,
                                        nsIDOMElement* aElement)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
   if (!widget)
     return NS_ERROR_FAILURE;
   return widget->SynthesizeNativeMouseEvent(nsIntPoint(aScreenX, aScreenY),
                                             aNativeMessage, aModifierFlags);
 }
 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,
                                              nsIDOMElement* aElement)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   return widget->SynthesizeNativeMouseScrollEvent(nsIntPoint(aScreenX,
                                                              aScreenY),
                                                   aNativeMessage,
                                                   aDeltaX, aDeltaY, aDeltaZ,
                                                   aModifierFlags,
                                                   aAdditionalFlags);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendNativeTouchPoint(uint32_t aPointerId,
                                        uint32_t aTouchState,
                                        int32_t aScreenX,
                                        int32_t aScreenY,
                                        double aPressure,
                                        uint32_t aOrientation)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   if (aPressure < 0 || aPressure > 1 || aOrientation > 359) {
     return NS_ERROR_INVALID_ARG;
   }
   return widget->SynthesizeNativeTouchPoint(aPointerId,
                                             (nsIWidget::TouchPointerState)aTouchState,
                                             nsIntPoint(aScreenX, aScreenY),
                                             aPressure, aOrientation);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendNativeTouchTap(int32_t aScreenX,
                                      int32_t aScreenY,
                                      bool aLongTap)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   return widget->SynthesizeNativeTouchTap(nsIntPoint(aScreenX, aScreenY), aLongTap);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::ClearNativeTouchSequence()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   return widget->ClearNativeTouchSequence();
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::ActivateNativeMenuItemAt(const nsAString& indexString)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // 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)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   return widget->ForceUpdateNativeMenuAt(indexString);
 }
 nsIWidget*
 nsDOMWindowUtils::GetWidget(nsPoint* aOffset)
 {
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   if (window) {
     nsIDocShell *docShell = window->GetDocShell();
     if (docShell) {
       nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
       if (presShell) {
         nsIFrame* frame = presShell->GetRootFrame();
         if (frame)
           return frame->GetView()->GetNearestWidget(aOffset);
       }
     }
   }
   return nullptr;
 }
 nsIWidget*
 nsDOMWindowUtils::GetWidgetForElement(nsIDOMElement* aElement)
 {
   if (!aElement)
     return GetWidget();
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   nsIDocument* doc = content->GetCurrentDoc();
   nsIPresShell* presShell = doc ? doc->GetShell() : nullptr;
   if (presShell) {
     nsIFrame* frame = content->GetPrimaryFrame();
     if (!frame) {
       frame = presShell->GetRootFrame();
     }
     if (frame)
       return frame->GetNearestWidget();
   }
   return nullptr;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::Focus(nsIDOMElement* aElement)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDOMWindow> window = do_QueryReferent(mWindow);
   nsIFocusManager* fm = nsFocusManager::GetFocusManager();
   if (fm) {
     if (aElement)
       fm->SetFocus(aElement, 0);
     else
       fm->ClearFocus(window);
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GarbageCollect(nsICycleCollectorListener *aListener,
                                  int32_t aExtraForgetSkippableCalls)
 {
   PROFILER_LABEL("GC", "GarbageCollect");
   // Always permit this in debug builds.
 #ifndef DEBUG
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
 #endif
   nsJSContext::GarbageCollectNow(JS::gcreason::DOM_UTILS);
   nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::CycleCollect(nsICycleCollectorListener *aListener,
                                int32_t aExtraForgetSkippableCalls)
 {
   // Always permit this in debug builds.
 #ifndef DEBUG
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
 #endif
   nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::RunNextCollectorTimer()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsJSContext::RunNextCollectorTimer();
   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)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsPoint offset;
   nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
   if (!widget)
     return NS_ERROR_FAILURE;
   int32_t msg;
   if (aType.EqualsLiteral("MozSwipeGestureStart"))
     msg = NS_SIMPLE_GESTURE_SWIPE_START;
   else if (aType.EqualsLiteral("MozSwipeGestureUpdate"))
     msg = NS_SIMPLE_GESTURE_SWIPE_UPDATE;
   else if (aType.EqualsLiteral("MozSwipeGestureEnd"))
     msg = NS_SIMPLE_GESTURE_SWIPE_END;
   else if (aType.EqualsLiteral("MozSwipeGesture"))
     msg = NS_SIMPLE_GESTURE_SWIPE;
   else if (aType.EqualsLiteral("MozMagnifyGestureStart"))
     msg = NS_SIMPLE_GESTURE_MAGNIFY_START;
   else if (aType.EqualsLiteral("MozMagnifyGestureUpdate"))
     msg = NS_SIMPLE_GESTURE_MAGNIFY_UPDATE;
   else if (aType.EqualsLiteral("MozMagnifyGesture"))
     msg = NS_SIMPLE_GESTURE_MAGNIFY;
   else if (aType.EqualsLiteral("MozRotateGestureStart"))
     msg = NS_SIMPLE_GESTURE_ROTATE_START;
   else if (aType.EqualsLiteral("MozRotateGestureUpdate"))
     msg = NS_SIMPLE_GESTURE_ROTATE_UPDATE;
   else if (aType.EqualsLiteral("MozRotateGesture"))
     msg = NS_SIMPLE_GESTURE_ROTATE;
   else if (aType.EqualsLiteral("MozTapGesture"))
     msg = NS_SIMPLE_GESTURE_TAP;
   else if (aType.EqualsLiteral("MozPressTapGesture"))
     msg = NS_SIMPLE_GESTURE_PRESSTAP;
   else if (aType.EqualsLiteral("MozEdgeUIStarted"))
     msg = NS_SIMPLE_GESTURE_EDGE_STARTED;
   else if (aType.EqualsLiteral("MozEdgeUICanceled"))
     msg = NS_SIMPLE_GESTURE_EDGE_CANCELED;
   else if (aType.EqualsLiteral("MozEdgeUICompleted"))
     msg = NS_SIMPLE_GESTURE_EDGE_COMPLETED;
   else
     return NS_ERROR_FAILURE;
   WidgetSimpleGestureEvent event(true, msg, widget);
   event.modifiers = GetWidgetModifiers(aModifiers);
   event.direction = aDirection;
   event.delta = aDelta;
   event.clickCount = aClickCount;
   event.time = PR_IntervalNow();
   nsPresContext* presContext = GetPresContext();
   if (!presContext)
     return NS_ERROR_FAILURE;
   event.refPoint = 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,
                                    nsIDOMElement** aReturn)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   Element* el =
     doc->ElementFromPointHelper(aX, aY, aIgnoreRootScrollFrame, aFlushLayout);
   nsCOMPtr<nsIDOMElement> retval = do_QueryInterface(el);
   retval.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,
                                 nsIDOMNodeList** aReturn)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   return doc->NodesFromRectHelper(aX, aY, aTopSize, aRightSize, aBottomSize, aLeftSize,
                                   aIgnoreRootScrollFrame, aFlushLayout, aReturn);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetTranslationNodes(nsIDOMNode* aRoot,
                                       nsITranslationNodeList** aRetVal)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aRetVal);
   nsCOMPtr<nsIContent> root = do_QueryInterface(aRoot);
   NS_ENSURE_STATE(root);
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   if (root->OwnerDoc() != doc) {
     return NS_ERROR_DOM_WRONG_DOCUMENT_ERR;
   }
   nsTHashtable<nsPtrHashKey<nsIContent>> translationNodesHash(1000);
   nsRefPtr<nsTranslationNodeList> list = new nsTranslationNodeList;
   uint32_t limit = 15000;
   // We begin iteration with content->GetNextNode because we want to explictly
   // skip the root tag from being a translation node.
   nsIContent* content = root;
   while ((limit > 0) && (content = content->GetNextNode(root))) {
     if (!content->IsHTML()) {
       continue;
     }
     nsIAtom* localName = content->Tag();
     // Skip elements that usually contain non-translatable text content.
     if (localName == nsGkAtoms::script ||
         localName == nsGkAtoms::iframe ||
         localName == nsGkAtoms::frameset ||
         localName == nsGkAtoms::frame ||
         localName == nsGkAtoms::code ||
         localName == nsGkAtoms::noscript ||
         localName == 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->HasTextForTranslation()) {
         translationNodesHash.PutEntry(content);
         bool isBlockFrame = false;
         nsIFrame* frame = content->GetPrimaryFrame();
         if (frame) {
           isBlockFrame = frame->IsFrameOfType(nsIFrame::eBlockFrame);
         }
         bool isTranslationRoot = isBlockFrame;
         if (!isBlockFrame) {
           // 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->AsDOMNode(), isTranslationRoot);
         --limit;
         break;
       }
     }
   }
   *aRetVal = list.forget().take();
   return NS_OK;
 }
 static TemporaryRef<DataSourceSurface>
 CanvasToDataSourceSurface(nsIDOMHTMLCanvasElement* aCanvas)
 {
   nsCOMPtr<nsINode> node = do_QueryInterface(aCanvas);
   if (!node) {
     return nullptr;
   }
   NS_ABORT_IF_FALSE(node->IsElement(),
                     "An nsINode that implements nsIDOMHTMLCanvasElement should "
                     "be an element.");
   nsLayoutUtils::SurfaceFromElementResult result =
     nsLayoutUtils::SurfaceFromElement(node->AsElement());
   return result.mSourceSurface->GetDataSurface();
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::CompareCanvases(nsIDOMHTMLCanvasElement *aCanvas1,
                                   nsIDOMHTMLCanvasElement *aCanvas2,
                                   uint32_t* aMaxDifference,
                                   uint32_t* retVal)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (aCanvas1 == nullptr ||
       aCanvas2 == nullptr ||
       retVal == nullptr)
     return NS_ERROR_FAILURE;
   RefPtr<DataSourceSurface> img1 = CanvasToDataSourceSurface(aCanvas1);
   RefPtr<DataSourceSurface> img2 = CanvasToDataSourceSurface(aCanvas2);
   if (img1 == nullptr || img2 == nullptr ||
       img1->GetSize() != img2->GetSize() ||
       img1->Stride() != img2->Stride())
     return NS_ERROR_FAILURE;
   int v;
   IntSize size = img1->GetSize();
   uint32_t stride = img1->Stride();
   // we can optimize for the common all-pass case
   if (stride == (uint32_t) size.width * 4) {
     v = memcmp(img1->GetData(), img2->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 = img1->GetData() + j*stride;
     unsigned char *p2 = img2->GetData() + j*stride;
     v = memcmp(p1, p2, stride);
     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)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aResult);
   *aResult = false;
   nsPresContext* presContext = GetPresContext();
   if (!presContext)
     return NS_OK;
   *aResult = presContext->IsDOMPaintEventPending();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::ClearMozAfterPaintEvents()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsPresContext* presContext = GetPresContext();
   if (!presContext)
     return NS_OK;
   presContext->ClearMozAfterPaintEvents();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::DisableNonTestMouseEvents(bool aDisable)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   nsIDocShell *docShell = window->GetDocShell();
   NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
   nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
   NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
   presShell->DisableNonTestMouseEvents(aDisable);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SuppressEventHandling(bool aSuppress)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
   if (aSuppress) {
     doc->SuppressEventHandling(nsIDocument::eEvents);
   } else {
     doc->UnsuppressEventHandlingAndFireEvents(nsIDocument::eEvents, true);
   }
   return NS_OK;
 }
 static nsresult
 getScrollXYAppUnits(nsWeakPtr aWindow, bool aFlushLayout, nsPoint& aScrollPos) {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(aWindow);
   nsCOMPtr<nsIDocument> doc = window ? window->GetExtantDoc() : nullptr;
   NS_ENSURE_STATE(doc);
   if (aFlushLayout) {
     doc->FlushPendingNotifications(Flush_Layout);
   }
   nsIPresShell *presShell = doc->GetShell();
   if (presShell) {
     nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
     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::GetScrollbarSize(bool aFlushLayout, int32_t* aWidth,
                                                       int32_t* aHeight)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   *aWidth = 0;
   *aHeight = 0;
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   if (aFlushLayout) {
     doc->FlushPendingNotifications(Flush_Layout);
   }
   nsIPresShell* presShell = doc->GetShell();
   NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_AVAILABLE);
   nsIScrollableFrame* scrollFrame = presShell->GetRootScrollFrameAsScrollable();
   NS_ENSURE_TRUE(scrollFrame, NS_OK);
   nsMargin sizes = scrollFrame->GetActualScrollbarSizes();
   *aWidth = nsPresContext::AppUnitsToIntCSSPixels(sizes.LeftRight());
   *aHeight = nsPresContext::AppUnitsToIntCSSPixels(sizes.TopBottom());
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetBoundsWithoutFlushing(nsIDOMElement *aElement,
                                            nsIDOMClientRect** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   nsresult rv;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   nsRefPtr<DOMRect> rect = new DOMRect(window);
   nsIFrame* frame = content->GetPrimaryFrame();
   if (frame) {
     nsRect r = nsLayoutUtils::GetAllInFlowRectsUnion(frame,
                nsLayoutUtils::GetContainingBlockForClientRect(frame),
                nsLayoutUtils::RECTS_ACCOUNT_FOR_TRANSFORMS);
     rect->SetLayoutRect(r);
   }
   rect.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetRootBounds(nsIDOMClientRect** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIDocument* doc = GetDocument();
   NS_ENSURE_STATE(doc);
   nsRect bounds(0, 0, 0, 0);
   nsIPresShell* presShell = doc->GetShell();
   if (presShell) {
     nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
     if (sf) {
       bounds = sf->GetScrollRange();
       bounds.width += sf->GetScrollPortRect().width;
       bounds.height += sf->GetScrollPortRect().height;
     } else if (presShell->GetRootFrame()) {
       bounds = presShell->GetRootFrame()->GetRect();
     }
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   nsRefPtr<DOMRect> rect = new DOMRect(window);
   rect->SetRect(nsPresContext::AppUnitsToFloatCSSPixels(bounds.x),
                 nsPresContext::AppUnitsToFloatCSSPixels(bounds.y),
                 nsPresContext::AppUnitsToFloatCSSPixels(bounds.width),
                 nsPresContext::AppUnitsToFloatCSSPixels(bounds.height));
   rect.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIMEIsOpen(bool *aState)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aState);
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   // Open state should not be available when IME is not enabled.
   InputContext context = widget->GetInputContext();
   if (context.mIMEState.mEnabled != IMEState::ENABLED) {
     return NS_ERROR_NOT_AVAILABLE;
   }
   if (context.mIMEState.mOpen == IMEState::OPEN_STATE_NOT_SUPPORTED) {
     return NS_ERROR_NOT_IMPLEMENTED;
   }
   *aState = (context.mIMEState.mOpen == IMEState::OPEN);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIMEStatus(uint32_t *aState)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aState);
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   InputContext context = widget->GetInputContext();
   *aState = static_cast<uint32_t>(context.mIMEState.mEnabled);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetFocusedInputType(char** aType)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aType);
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   InputContext context = widget->GetInputContext();
   *aType = ToNewCString(context.mHTMLInputType);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::FindElementWithViewId(nsViewID aID,
                                         nsIDOMElement** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsRefPtr<nsIContent> content = nsLayoutUtils::FindContentFor(aID);
   return content ? CallQueryInterface(content, aResult) : NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetViewId(nsIDOMElement* aElement, nsViewID* aResult)
 {
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   if (content && nsLayoutUtils::FindIDFor(content, aResult)) {
     return NS_OK;
   }
   return NS_ERROR_NOT_AVAILABLE;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetScreenPixelsPerCSSPixel(float* aScreenPixels)
 {
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   return window->GetDevicePixelRatio(aScreenPixels);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetFullZoom(float* aFullZoom)
 {
   *aFullZoom = 1.0f;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsPresContext* presContext = GetPresContext();
   if (!presContext) {
     return NS_OK;
   }
   *aFullZoom = presContext->DeviceContext()->GetPixelScale();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::DispatchDOMEventViaPresShell(nsIDOMNode* aTarget,
                                                nsIDOMEvent* aEvent,
                                                bool aTrusted,
                                                bool* aRetVal)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_STATE(aEvent);
   aEvent->SetTrusted(aTrusted);
   WidgetEvent* internalEvent = aEvent->GetInternalNSEvent();
   NS_ENSURE_STATE(internalEvent);
   nsCOMPtr<nsIContent> content = do_QueryInterface(aTarget);
   NS_ENSURE_STATE(content);
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   if (content->OwnerDoc()->GetWindow() != window) {
     return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
   }
   nsCOMPtr<nsIDocument> targetDoc = content->GetCurrentDoc();
   NS_ENSURE_STATE(targetDoc);
   nsRefPtr<nsIPresShell> targetShell = targetDoc->GetShell();
   NS_ENSURE_STATE(targetShell);
   targetDoc->FlushPendingNotifications(Flush_Layout);
   nsEventStatus status = nsEventStatus_eIgnore;
   targetShell->HandleEventWithTarget(internalEvent, nullptr, content, &status);
   *aRetVal = (status != nsEventStatus_eConsumeNoDefault);
   return NS_OK;
 }
 static void
 InitEvent(WidgetGUIEvent& aEvent, LayoutDeviceIntPoint* aPt = nullptr)
 {
   if (aPt) {
     aEvent.refPoint = *aPt;
   }
   aEvent.time = PR_IntervalNow();
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendCompositionEvent(const nsAString& aType,
                                        const nsAString& aData,
                                        const nsAString& aLocale)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   uint32_t msg;
   if (aType.EqualsLiteral("compositionstart")) {
     msg = NS_COMPOSITION_START;
   } else if (aType.EqualsLiteral("compositionend")) {
     msg = NS_COMPOSITION_END;
   } else if (aType.EqualsLiteral("compositionupdate")) {
     msg = NS_COMPOSITION_UPDATE;
   } else {
     return NS_ERROR_FAILURE;
   }
   WidgetCompositionEvent compositionEvent(true, msg, widget);
   InitEvent(compositionEvent);
   if (msg != NS_COMPOSITION_START) {
     compositionEvent.data = aData;
   }
   compositionEvent.mFlags.mIsSynthesizedForTests = true;
   nsEventStatus status;
   nsresult rv = widget->DispatchEvent(&compositionEvent, status);
   NS_ENSURE_SUCCESS(rv, rv);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::CreateCompositionStringSynthesizer(
                     nsICompositionStringSynthesizer** aResult)
 {
   NS_ENSURE_ARG_POINTER(aResult);
   *aResult = nullptr;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_NOT_AVAILABLE);
   NS_ADDREF(*aResult = new CompositionStringSynthesizer(window));
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendQueryContentEvent(uint32_t aType,
                                         uint32_t aOffset, uint32_t aLength,
                                         int32_t aX, int32_t aY,
                                         uint32_t aAdditionalFlags,
                                         nsIQueryContentEventResult **aResult)
 {
   *aResult = nullptr;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   nsIDocShell *docShell = window->GetDocShell();
   NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
   nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
   NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
   nsPresContext* presContext = presShell->GetPresContext();
   NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   if (aType != NS_QUERY_SELECTED_TEXT &&
       aType != NS_QUERY_TEXT_CONTENT &&
       aType != NS_QUERY_CARET_RECT &&
       aType != NS_QUERY_TEXT_RECT &&
       aType != NS_QUERY_EDITOR_RECT &&
       aType != NS_QUERY_CHARACTER_AT_POINT) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIWidget> targetWidget = widget;
   LayoutDeviceIntPoint pt(aX, aY);
   bool useNativeLineBreak =
     !(aAdditionalFlags & QUERY_CONTENT_FLAG_USE_XP_LINE_BREAK);
   if (aType == QUERY_CHARACTER_AT_POINT) {
     // Looking for the widget at the point.
     WidgetQueryContentEvent dummyEvent(true, NS_QUERY_CONTENT_STATE, widget);
     dummyEvent.mUseNativeLineBreak = useNativeLineBreak;
     InitEvent(dummyEvent, &pt);
     nsIFrame* popupFrame =
       nsLayoutUtils::GetPopupFrameForEventCoordinates(presContext->GetRootPresContext(), &dummyEvent);
     nsIntRect widgetBounds;
     nsresult rv = widget->GetClientBounds(widgetBounds);
     NS_ENSURE_SUCCESS(rv, rv);
     widgetBounds.MoveTo(0, 0);
     // There is no popup frame at the point and the point isn't in our widget,
     // we cannot process this request.
     NS_ENSURE_TRUE(popupFrame ||
                    widgetBounds.Contains(LayoutDeviceIntPoint::ToUntyped(pt)),
                    NS_ERROR_FAILURE);
     // Fire the event on the widget at the point
     if (popupFrame) {
       targetWidget = popupFrame->GetNearestWidget();
     }
   }
   pt += LayoutDeviceIntPoint::FromUntyped(
     widget->WidgetToScreenOffset() - targetWidget->WidgetToScreenOffset());
   WidgetQueryContentEvent queryEvent(true, aType, targetWidget);
   InitEvent(queryEvent, &pt);
   switch (aType) {
     case NS_QUERY_TEXT_CONTENT:
       queryEvent.InitForQueryTextContent(aOffset, aLength, useNativeLineBreak);
       break;
     case NS_QUERY_CARET_RECT:
       queryEvent.InitForQueryCaretRect(aOffset, useNativeLineBreak);
       break;
     case NS_QUERY_TEXT_RECT:
       queryEvent.InitForQueryTextRect(aOffset, aLength, useNativeLineBreak);
       break;
     default:
       queryEvent.mUseNativeLineBreak = useNativeLineBreak;
       break;
   }
   nsEventStatus status;
   nsresult rv = targetWidget->DispatchEvent(&queryEvent, status);
   NS_ENSURE_SUCCESS(rv, rv);
   nsQueryContentEventResult* result = new nsQueryContentEventResult();
   NS_ENSURE_TRUE(result, NS_ERROR_OUT_OF_MEMORY);
   result->SetEventResult(widget, queryEvent);
   NS_ADDREF(*aResult = result);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendSelectionSetEvent(uint32_t aOffset,
                                         uint32_t aLength,
                                         uint32_t aAdditionalFlags,
                                         bool *aResult)
 {
   *aResult = false;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget) {
     return NS_ERROR_FAILURE;
   }
   WidgetSelectionEvent selectionEvent(true, NS_SELECTION_SET, widget);
   InitEvent(selectionEvent);
   selectionEvent.mOffset = aOffset;
   selectionEvent.mLength = aLength;
   selectionEvent.mReversed = (aAdditionalFlags & SELECTION_SET_FLAG_REVERSE);
   selectionEvent.mUseNativeLineBreak =
     !(aAdditionalFlags & SELECTION_SET_FLAG_USE_XP_LINE_BREAK);
   nsEventStatus status;
   nsresult rv = widget->DispatchEvent(&selectionEvent, status);
   NS_ENSURE_SUCCESS(rv, rv);
   *aResult = selectionEvent.mSucceeded;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SendContentCommandEvent(const nsAString& aType,
                                           nsITransferable * aTransferable)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // get the widget to send the event to
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   int32_t msg;
   if (aType.EqualsLiteral("cut"))
     msg = NS_CONTENT_COMMAND_CUT;
   else if (aType.EqualsLiteral("copy"))
     msg = NS_CONTENT_COMMAND_COPY;
   else if (aType.EqualsLiteral("paste"))
     msg = NS_CONTENT_COMMAND_PASTE;
   else if (aType.EqualsLiteral("delete"))
     msg = NS_CONTENT_COMMAND_DELETE;
   else if (aType.EqualsLiteral("undo"))
     msg = NS_CONTENT_COMMAND_UNDO;
   else if (aType.EqualsLiteral("redo"))
     msg = NS_CONTENT_COMMAND_REDO;
   else if (aType.EqualsLiteral("pasteTransferable"))
     msg = NS_CONTENT_COMMAND_PASTE_TRANSFERABLE;
   else
     return NS_ERROR_FAILURE;
   WidgetContentCommandEvent event(true, msg, widget);
   if (msg == NS_CONTENT_COMMAND_PASTE_TRANSFERABLE) {
     event.mTransferable = aTransferable;
   }
   nsEventStatus status;
   return widget->DispatchEvent(&event, status);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetClassName(JS::Handle<JS::Value> aObject, JSContext* aCx,
                                char** aName)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // Our argument must be a non-null object.
   if (JSVAL_IS_PRIMITIVE(aObject)) {
     return NS_ERROR_XPC_BAD_CONVERT_JS;
   }
   *aName = NS_strdup(JS_GetClass(JSVAL_TO_OBJECT(aObject))->name);
   NS_ABORT_IF_FALSE(*aName, "NS_strdup should be infallible.");
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetVisitedDependentComputedStyle(
                     nsIDOMElement *aElement, const nsAString& aPseudoElement,
                     const nsAString& aPropertyName, nsAString& aResult)
 {
   aResult.Truncate();
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   nsCOMPtr<nsIDOMCSSStyleDeclaration> decl;
   nsresult rv =
     window->GetComputedStyle(aElement, aPseudoElement, getter_AddRefs(decl));
   NS_ENSURE_SUCCESS(rv, rv);
   static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(true);
   rv = decl->GetPropertyValue(aPropertyName, aResult);
   static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(false);
   return rv;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::EnterModalState()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   window->EnterModalState();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::LeaveModalState()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   window->LeaveModalState();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::IsInModalState(bool *retval)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   *retval = static_cast<nsGlobalWindow*>(window.get())->IsInModalState();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetParent(JS::Handle<JS::Value> aObject,
                             JSContext* aCx,
                             JS::MutableHandle<JS::Value> aParent)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // First argument must be an object.
   if (aObject.isPrimitive()) {
     return NS_ERROR_XPC_BAD_CONVERT_JS;
   }
   JS::Rooted<JSObject*> parent(aCx, JS_GetParent(&aObject.toObject()));
   // Outerize if necessary.
   if (parent) {
     if (JSObjectOp outerize = js::GetObjectClass(parent)->ext.outerObject) {
       parent = outerize(aCx, parent);
     }
   }
   aParent.setObject(*parent);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetOuterWindowID(uint64_t *aWindowID)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   NS_ASSERTION(window->IsOuterWindow(), "How did that happen?");
   *aWindowID = window->WindowID();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetCurrentInnerWindowID(uint64_t *aWindowID)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_NOT_AVAILABLE);
   NS_ASSERTION(window->IsOuterWindow(), "How did that happen?");
   nsGlobalWindow* inner =
     static_cast<nsGlobalWindow*>(window.get())->GetCurrentInnerWindowInternal();
   if (!inner) {
     return NS_ERROR_NOT_AVAILABLE;
   }
   *aWindowID = inner->WindowID();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SuspendTimeouts()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   window->SuspendTimeouts();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::ResumeTimeouts()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   window->ResumeTimeouts();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetLayerManagerType(nsAString& aType)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager *mgr = widget->GetLayerManager(nsIWidget::LAYER_MANAGER_PERSISTENT);
   if (!mgr)
     return NS_ERROR_FAILURE;
   mgr->GetBackendName(aType);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetLayerManagerRemote(bool* retval)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager *mgr = widget->GetLayerManager();
   if (!mgr)
     return NS_ERROR_FAILURE;
   *retval = !!mgr->AsShadowForwarder();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::StartFrameTimeRecording(uint32_t *startIndex)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(startIndex);
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager *mgr = widget->GetLayerManager();
   if (!mgr)
     return NS_ERROR_FAILURE;
   const uint32_t kRecordingMinSize = 60 * 10; // 10 seconds @60 fps.
   const uint32_t kRecordingMaxSize = 60 * 60 * 60; // One hour
   uint32_t bufferSize = Preferences::GetUint("toolkit.framesRecording.bufferSize", uint32_t(0));
   bufferSize = std::min(bufferSize, kRecordingMaxSize);
   bufferSize = std::max(bufferSize, kRecordingMinSize);
   *startIndex = mgr->StartFrameTimeRecording(bufferSize);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::StopFrameTimeRecording(uint32_t   startIndex,
                                          uint32_t  *frameCount,
                                          float    **frameIntervals)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(frameCount);
   NS_ENSURE_ARG_POINTER(frameIntervals);
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager *mgr = widget->GetLayerManager();
   if (!mgr)
     return NS_ERROR_FAILURE;
   nsTArray<float> tmpFrameIntervals;
   mgr->StopFrameTimeRecording(startIndex, tmpFrameIntervals);
   *frameCount = tmpFrameIntervals.Length();
   *frameIntervals = (float*)nsMemory::Alloc(*frameCount * sizeof(float));
   /* copy over the frame intervals and paint times into the arrays we just allocated */
   for (uint32_t i = 0; i < *frameCount; i++) {
     (*frameIntervals)[i] = tmpFrameIntervals[i];
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::BeginTabSwitch()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager *mgr = widget->GetLayerManager();
   if (!mgr)
     return NS_ERROR_FAILURE;
   mgr->BeginTabSwitch();
   return NS_OK;
 }
 static bool
 ComputeAnimationValue(nsCSSProperty aProperty,
                       Element* aElement,
                       const nsAString& aInput,
                       nsStyleAnimation::Value& aOutput)
 {
   if (!nsStyleAnimation::ComputeValue(aProperty, aElement, aInput,
                                       false, aOutput)) {
     return false;
   }
   // This matches TransExtractComputedValue in nsTransitionManager.cpp.
   if (aProperty == eCSSProperty_visibility) {
     NS_ABORT_IF_FALSE(aOutput.GetUnit() == nsStyleAnimation::eUnit_Enumerated,
                       "unexpected unit");
     aOutput.SetIntValue(aOutput.GetIntValue(),
                         nsStyleAnimation::eUnit_Visibility);
   }
   return true;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::AdvanceTimeAndRefresh(int64_t aMilliseconds)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsRefreshDriver* driver = GetPresContext()->RefreshDriver();
   driver->AdvanceTimeAndRefresh(aMilliseconds);
   LayerTransactionChild* transaction = GetLayerTransaction();
   if (transaction) {
     transaction->SendSetTestSampleTime(driver->MostRecentRefresh());
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::RestoreNormalRefresh()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // Kick the compositor out of test mode before the refresh driver, so that
   // the refresh driver doesn't send an update that gets ignored by the
   // compositor.
   LayerTransactionChild* transaction = GetLayerTransaction();
   if (transaction) {
     transaction->SendLeaveTestMode();
   }
   nsRefreshDriver* driver = GetPresContext()->RefreshDriver();
   driver->RestoreNormalRefresh();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsTestControllingRefreshes(bool *aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsPresContext* pc = GetPresContext();
   *aResult =
     pc ? pc->RefreshDriver()->IsTestControllingRefreshesEnabled() : false;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetAsyncScrollOffset(nsIDOMNode* aNode,
                                        int32_t aX, int32_t aY)
 {
   nsCOMPtr<Element> element = do_QueryInterface(aNode);
   if (!element) {
     return NS_ERROR_INVALID_ARG;
   }
   nsIFrame* frame = element->GetPrimaryFrame();
   if (!frame) {
     return NS_ERROR_UNEXPECTED;
   }
   nsIScrollableFrame* scrollable = do_QueryFrame(frame);
   nsPresContext* presContext = frame->PresContext();
   nsIFrame* rootScrollFrame = presContext->PresShell()->GetRootScrollFrame();
   if (!scrollable) {
     if (rootScrollFrame && rootScrollFrame->GetContent() == element) {
       frame = rootScrollFrame;
       scrollable = do_QueryFrame(frame);
     }
   }
   if (!scrollable) {
     return NS_ERROR_UNEXPECTED;
   }
   Layer* layer = FrameLayerBuilder::GetDedicatedLayer(scrollable->GetScrolledFrame(),
     nsDisplayItem::TYPE_SCROLL_LAYER);
   if (!layer) {
     if (rootScrollFrame == frame && !presContext->GetParentPresContext()) {
       nsIWidget* widget = GetWidget();
       if (widget) {
         LayerManager* manager = widget->GetLayerManager();
         if (manager) {
           layer = manager->GetRoot();
         }
       }
     }
     if (!layer) {
       return NS_ERROR_UNEXPECTED;
     }
   }
   ShadowLayerForwarder* forwarder = layer->Manager()->AsShadowForwarder();
   if (!forwarder || !forwarder->HasShadowManager()) {
     return NS_ERROR_UNEXPECTED;
   }
   forwarder->GetShadowManager()->SendSetAsyncScrollOffset(
     layer->AsShadowableLayer()->GetShadow(), aX, aY);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::ComputeAnimationDistance(nsIDOMElement* aElement,
                                            const nsAString& aProperty,
                                            const nsAString& aValue1,
                                            const nsAString& aValue2,
                                            double* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsresult rv;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   // Convert direction-dependent properties as appropriate, e.g.,
   // border-left to border-left-value.
   nsCSSProperty property =
     nsCSSProps::LookupProperty(aProperty, nsCSSProps::eIgnoreEnabledState);
   if (property != eCSSProperty_UNKNOWN && nsCSSProps::IsShorthand(property)) {
     nsCSSProperty subprop0 = *nsCSSProps::SubpropertyEntryFor(property);
     if (nsCSSProps::PropHasFlags(subprop0, CSS_PROPERTY_REPORT_OTHER_NAME) &&
         nsCSSProps::OtherNameFor(subprop0) == property) {
       property = subprop0;
     } else {
       property = eCSSProperty_UNKNOWN;
     }
   }
   NS_ABORT_IF_FALSE(property == eCSSProperty_UNKNOWN ||
                     !nsCSSProps::IsShorthand(property),
                     "should not have shorthand");
   nsStyleAnimation::Value v1, v2;
   if (property == eCSSProperty_UNKNOWN ||
       !ComputeAnimationValue(property, content->AsElement(), aValue1, v1) ||
       !ComputeAnimationValue(property, content->AsElement(), aValue2, v2)) {
     return NS_ERROR_ILLEGAL_VALUE;
   }
   if (!nsStyleAnimation::ComputeDistance(property, v1, v2, *aResult)) {
     return NS_ERROR_FAILURE;
   }
   return NS_OK;
 }
 nsresult
 nsDOMWindowUtils::RenderDocument(const nsRect& aRect,
                                  uint32_t aFlags,
                                  nscolor aBackgroundColor,
                                  gfxContext* aThebesContext)
 {
     if (!nsContentUtils::IsCallerChrome()) {
       return NS_ERROR_DOM_SECURITY_ERR;
     }
     nsCOMPtr<nsIDocument> doc = GetDocument();
     NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
     // Get Primary Shell
     nsCOMPtr<nsIPresShell> presShell = doc->GetShell();
     NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
     // Render Document
     return presShell->RenderDocument(aRect, aFlags, aBackgroundColor, aThebesContext);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetCursorType(int16_t *aCursor)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aCursor);
   nsIDocument* doc = GetDocument();
   NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
   bool isSameDoc = false;
   do {
     if (EventStateManager::sMouseOverDocument == doc) {
       isSameDoc = true;
       break;
     }
   } while ((doc = doc->GetParentDocument()));
   if (!isSameDoc) {
     *aCursor = eCursor_none;
     return NS_OK;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   // fetch cursor value from window's widget
   *aCursor = widget->GetCursor();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetDisplayDPI(float *aDPI)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIWidget> widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   *aDPI = widget->GetDPI();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetOuterWindowWithId(uint64_t aWindowID,
                                        nsIDOMWindow** aWindow)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // XXX This method is deprecated.  See bug 865664.
   nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
                                   NS_LITERAL_CSTRING("DOM"),
                                   nsContentUtils::GetDocumentFromCaller(),
                                   nsContentUtils::eDOM_PROPERTIES,
                                   "GetWindowWithOuterIdWarning");
   *aWindow = nsGlobalWindow::GetOuterWindowWithId(aWindowID);
   NS_IF_ADDREF(*aWindow);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetContainerElement(nsIDOMElement** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   nsCOMPtr<nsIDOMElement> element =
     do_QueryInterface(window->GetFrameElementInternal());
   element.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::WrapDOMFile(nsIFile *aFile,
                               nsIDOMFile **aDOMFile)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!aFile) {
     return NS_ERROR_FAILURE;
   }
   NS_ADDREF(*aDOMFile = new nsDOMFileFile(aFile));
   return NS_OK;
 }
 #ifdef DEBUG
 static bool
 CheckLeafLayers(Layer* aLayer, const nsIntPoint& aOffset, nsIntRegion* aCoveredRegion)
 {
   gfx::Matrix transform;
   if (!aLayer->GetTransform().Is2D(&transform) ||
       transform.HasNonIntegerTranslation())
     return false;
   transform.NudgeToIntegers();
   nsIntPoint offset = aOffset + nsIntPoint(transform._31, transform._32);
   Layer* child = aLayer->GetFirstChild();
   if (child) {
     while (child) {
       if (!CheckLeafLayers(child, offset, aCoveredRegion))
         return false;
       child = child->GetNextSibling();
     }
   } else {
     nsIntRegion rgn = aLayer->GetVisibleRegion();
     rgn.MoveBy(offset);
     nsIntRegion tmp;
     tmp.And(rgn, *aCoveredRegion);
     if (!tmp.IsEmpty())
       return false;
     aCoveredRegion->Or(*aCoveredRegion, rgn);
   }
   return true;
 }
 #endif
 NS_IMETHODIMP
 nsDOMWindowUtils::LeafLayersPartitionWindow(bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   *aResult = true;
 #ifdef DEBUG
   nsIWidget* widget = GetWidget();
   if (!widget)
     return NS_ERROR_FAILURE;
   LayerManager* manager = widget->GetLayerManager();
   if (!manager)
     return NS_ERROR_FAILURE;
   nsPresContext* presContext = GetPresContext();
   if (!presContext)
     return NS_ERROR_FAILURE;
   Layer* root = manager->GetRoot();
   if (!root)
     return NS_ERROR_FAILURE;
   nsIntPoint offset(0, 0);
   nsIntRegion coveredRegion;
   if (!CheckLeafLayers(root, offset, &coveredRegion)) {
     *aResult = false;
   }
   if (!coveredRegion.IsEqual(root->GetVisibleRegion())) {
     *aResult = false;
   }
 #endif
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetMayHaveTouchEventListeners(bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   nsPIDOMWindow* innerWindow = window->GetCurrentInnerWindow();
   *aResult = innerWindow ? innerWindow->HasTouchEventListeners() : false;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::CheckAndClearPaintedState(nsIDOMElement* aElement, bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!aElement) {
     return NS_ERROR_INVALID_ARG;
   }
   nsresult rv;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
   nsIFrame* frame = content->GetPrimaryFrame();
   if (!frame) {
     *aResult = false;
     return NS_OK;
   }
   *aResult = frame->CheckAndClearPaintedState();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::EnableDialogs()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   static_cast<nsGlobalWindow*>(window.get())->EnableDialogs();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::DisableDialogs()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   static_cast<nsGlobalWindow*>(window.get())->DisableDialogs();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::AreDialogsEnabled(bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   *aResult = static_cast<nsGlobalWindow*>(window.get())->AreDialogsEnabled();
   return NS_OK;
 }
 static nsIDOMBlob*
 GetXPConnectNative(JSContext* aCx, JSObject* aObj) {
   nsCOMPtr<nsIDOMBlob> blob = do_QueryInterface(
     nsContentUtils::XPConnect()->GetNativeOfWrapper(aCx, aObj));
   return blob;
 }
 static nsresult
 GetFileOrBlob(const nsAString& aName, JS::Handle<JS::Value> aBlobParts,
               JS::Handle<JS::Value> aParameters, JSContext* aCx,
               uint8_t aOptionalArgCount, nsISupports** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsresult rv;
   nsCOMPtr<nsISupports> file;
   if (aName.IsVoid()) {
     rv = nsDOMMultipartFile::NewBlob(getter_AddRefs(file));
   }
   else {
     rv = nsDOMMultipartFile::NewFile(aName, getter_AddRefs(file));
   }
   NS_ENSURE_SUCCESS(rv, rv);
   nsDOMMultipartFile* domFile =
     static_cast<nsDOMMultipartFile*>(static_cast<nsIDOMFile*>(file.get()));
   JS::AutoValueArray<2> args(aCx);
   args[0].set(aBlobParts);
   args[1].set(aParameters);
   rv = domFile->InitBlob(aCx, aOptionalArgCount, args.begin(), GetXPConnectNative);
   NS_ENSURE_SUCCESS(rv, rv);
   file.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetFile(const nsAString& aName, JS::Handle<JS::Value> aBlobParts,
                           JS::Handle<JS::Value> aParameters, JSContext* aCx,
                           uint8_t aOptionalArgCount, nsIDOMFile** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsISupports> file;
   nsresult rv = GetFileOrBlob(aName, aBlobParts, aParameters, aCx,
                               aOptionalArgCount, getter_AddRefs(file));
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<nsIDOMFile> result = do_QueryInterface(file);
   result.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetBlob(JS::Handle<JS::Value> aBlobParts,
                           JS::Handle<JS::Value> aParameters, JSContext* aCx,
                           uint8_t aOptionalArgCount, nsIDOMBlob** aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsISupports> blob;
   nsresult rv = GetFileOrBlob(NullString(), aBlobParts, aParameters, aCx,
                               aOptionalArgCount, getter_AddRefs(blob));
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<nsIDOMBlob> result = do_QueryInterface(blob);
   result.forget(aResult);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetFileId(JS::Handle<JS::Value> aFile, JSContext* aCx,
                             int64_t* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!JSVAL_IS_PRIMITIVE(aFile)) {
     JSObject* obj = JSVAL_TO_OBJECT(aFile);
     file::FileHandle* fileHandle;
     if (NS_SUCCEEDED(UNWRAP_OBJECT(FileHandle, obj, fileHandle))) {
       *aResult = fileHandle->GetFileId();
       return NS_OK;
     }
     nsISupports* nativeObj =
       nsContentUtils::XPConnect()->GetNativeOfWrapper(aCx, obj);
     nsCOMPtr<nsIDOMBlob> blob = do_QueryInterface(nativeObj);
     if (blob) {
       *aResult = blob->GetFileId();
       return NS_OK;
     }
   }
   *aResult = -1;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetFileReferences(const nsAString& aDatabaseName, int64_t aId,
                                     JS::Handle<JS::Value> aOptions,
                                     int32_t* aRefCnt, int32_t* aDBRefCnt,
                                     int32_t* aSliceRefCnt, JSContext* aCx,
                                     bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   nsCString origin;
   quota::PersistenceType defaultPersistenceType;
   nsresult rv =
     quota::QuotaManager::GetInfoFromWindow(window, nullptr, &origin, nullptr,
                                            &defaultPersistenceType);
   NS_ENSURE_SUCCESS(rv, rv);
   IDBOpenDBOptions options;
   JS::Rooted<JS::Value> optionsVal(aCx, aOptions);
   if (!options.Init(aCx, optionsVal)) {
     return NS_ERROR_TYPE_ERR;
   }
   quota::PersistenceType persistenceType =
     quota::PersistenceTypeFromStorage(options.mStorage, defaultPersistenceType);
   nsRefPtr<indexedDB::IndexedDatabaseManager> mgr =
     indexedDB::IndexedDatabaseManager::Get();
   if (mgr) {
     rv = mgr->BlockAndGetFileReferences(persistenceType, origin, aDatabaseName,
                                         aId, aRefCnt, aDBRefCnt, aSliceRefCnt,
                                         aResult);
     NS_ENSURE_SUCCESS(rv, rv);
   }
   else {
     *aRefCnt = *aDBRefCnt = *aSliceRefCnt = -1;
     *aResult = false;
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::IsIncrementalGCEnabled(JSContext* cx, bool* aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   *aResult = JS::IsIncrementalGCEnabled(JS_GetRuntime(cx));
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::StartPCCountProfiling(JSContext* cx)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   js::StartPCCountProfiling(cx);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::StopPCCountProfiling(JSContext* cx)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   js::StopPCCountProfiling(cx);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::PurgePCCounts(JSContext* cx)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   js::PurgePCCounts(cx);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPCCountScriptCount(JSContext* cx, int32_t *result)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   *result = js::GetPCCountScriptCount(cx);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPCCountScriptSummary(int32_t script, JSContext* cx, nsAString& result)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   JSString *text = js::GetPCCountScriptSummary(cx, script);
   if (!text)
     return NS_ERROR_FAILURE;
   nsDependentJSString str;
   if (!str.init(cx, text))
     return NS_ERROR_FAILURE;
   result = str;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPCCountScriptContents(int32_t script, JSContext* cx, nsAString& result)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   JSString *text = js::GetPCCountScriptContents(cx, script);
   if (!text)
     return NS_ERROR_FAILURE;
   nsDependentJSString str;
   if (!str.init(cx, text))
     return NS_ERROR_FAILURE;
   result = str;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPaintingSuppressed(bool *aPaintingSuppressed)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
   nsIDocShell *docShell = window->GetDocShell();
   NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
   nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
   NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
   *aPaintingSuppressed = presShell->IsPaintingSuppressed();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPlugins(JSContext* cx, JS::MutableHandle<JS::Value> aPlugins)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   nsTArray<nsIObjectLoadingContent*> plugins;
   doc->GetPlugins(plugins);
   JS::Rooted<JSObject*> jsPlugins(cx);
   nsresult rv = nsTArrayToJSArray(cx, plugins, jsPlugins.address());
   NS_ENSURE_SUCCESS(rv, rv);
   aPlugins.setObject(*jsPlugins);
   return NS_OK;
 }
 static void
 MaybeReflowForInflationScreenWidthChange(nsPresContext *aPresContext)
 {
   if (aPresContext) {
     nsIPresShell* presShell = aPresContext->GetPresShell();
     bool fontInflationWasEnabled = presShell->FontSizeInflationEnabled();
     presShell->NotifyFontSizeInflationEnabledIsDirty();
     bool changed = false;
     if (presShell && presShell->FontSizeInflationEnabled() &&
         presShell->FontSizeInflationMinTwips() != 0) {
       aPresContext->ScreenWidthInchesForFontInflation(&changed);
     }
     changed = changed ||
       (fontInflationWasEnabled != presShell->FontSizeInflationEnabled());
     if (changed) {
       nsCOMPtr<nsIDocShell> docShell = aPresContext->GetDocShell();
       if (docShell) {
         nsCOMPtr<nsIContentViewer> cv;
         docShell->GetContentViewer(getter_AddRefs(cv));
         nsCOMPtr<nsIMarkupDocumentViewer> mudv = do_QueryInterface(cv);
         if (mudv) {
           nsTArray<nsCOMPtr<nsIMarkupDocumentViewer> > array;
           mudv->AppendSubtree(array);
           for (uint32_t i = 0, iEnd = array.Length(); i < iEnd; ++i) {
             nsCOMPtr<nsIPresShell> shell;
             nsCOMPtr<nsIContentViewer> cv = do_QueryInterface(array[i]);
             cv->GetPresShell(getter_AddRefs(shell));
             if (shell) {
               nsIFrame *rootFrame = shell->GetRootFrame();
               if (rootFrame) {
                 shell->FrameNeedsReflow(rootFrame,
                                         nsIPresShell::eStyleChange,
                                         NS_FRAME_IS_DIRTY);
               }
             }
           }
         }
       }
     }
   }
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetScrollPositionClampingScrollPortSize(float aWidth, float aHeight)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!(aWidth >= 0.0 && aHeight >= 0.0)) {
     return NS_ERROR_ILLEGAL_VALUE;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   presShell->SetScrollPositionClampingScrollPortSize(
     nsPresContext::CSSPixelsToAppUnits(aWidth),
     nsPresContext::CSSPixelsToAppUnits(aHeight));
   // When the "font.size.inflation.minTwips" preference is set, the
   // layout depends on the size of the screen.  Since when the size
   // of the screen changes, the scroll position clamping scroll port
   // size also changes, we hook in the needed updates here rather
   // than adding a separate notification just for this change.
   nsPresContext* presContext = GetPresContext();
   MaybeReflowForInflationScreenWidthChange(presContext);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetContentDocumentFixedPositionMargins(float aTop, float aRight,
                                                          float aBottom, float aLeft)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   if (!(aTop >= 0.0f && aRight >= 0.0f && aBottom >= 0.0f && aLeft >= 0.0f)) {
     return NS_ERROR_ILLEGAL_VALUE;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_FAILURE;
   }
   nsMargin margins(nsPresContext::CSSPixelsToAppUnits(aTop),
                    nsPresContext::CSSPixelsToAppUnits(aRight),
                    nsPresContext::CSSPixelsToAppUnits(aBottom),
                    nsPresContext::CSSPixelsToAppUnits(aLeft));
   presShell->SetContentDocumentFixedPositionMargins(margins);
   return NS_OK;
 }
 nsresult
 nsDOMWindowUtils::RemoteFrameFullscreenChanged(nsIDOMElement* aFrameElement,
                                             const nsAString& aNewOrigin)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   doc->RemoteFrameFullscreenChanged(aFrameElement, aNewOrigin);
   return NS_OK;
 }
 nsresult
 nsDOMWindowUtils::RemoteFrameFullscreenReverted()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
   doc->RemoteFrameFullscreenReverted();
   return NS_OK;
 }
 nsresult
 nsDOMWindowUtils::ExitFullscreen()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsIDocument::ExitFullscreen(nullptr, /* async */ false);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SelectAtPoint(float aX, float aY, uint32_t aSelectBehavior,
                                 bool *_retval)
 {
   *_retval = false;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsSelectionAmount amount;
   switch (aSelectBehavior) {
     case nsIDOMWindowUtils::SELECT_CHARACTER:
       amount = eSelectCharacter;
     break;
     case nsIDOMWindowUtils::SELECT_CLUSTER:
       amount = eSelectCluster;
     break;
     case nsIDOMWindowUtils::SELECT_WORD:
       amount = eSelectWord;
     break;
     case nsIDOMWindowUtils::SELECT_LINE:
       amount = eSelectLine;
     break;
     case nsIDOMWindowUtils::SELECT_BEGINLINE:
       amount = eSelectBeginLine;
     break;
     case nsIDOMWindowUtils::SELECT_ENDLINE:
       amount = eSelectEndLine;
     break;
     case nsIDOMWindowUtils::SELECT_PARAGRAPH:
       amount = eSelectParagraph;
     break;
     case nsIDOMWindowUtils::SELECT_WORDNOSPACE:
       amount = eSelectWordNoSpace;
     break;
     default:
       return NS_ERROR_INVALID_ARG;
   }
   nsIPresShell* presShell = GetPresShell();
   if (!presShell) {
     return NS_ERROR_UNEXPECTED;
   }
   // The root frame for this content window
   nsIFrame* rootFrame = presShell->FrameManager()->GetRootFrame();
   if (!rootFrame) {
     return NS_ERROR_UNEXPECTED;
   }
   // Get the target frame at the client coordinates passed to us
   nsPoint offset;
   nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
   nsIntPoint pt = LayoutDeviceIntPoint::ToUntyped(
     ToWidgetPoint(CSSPoint(aX, aY), offset, GetPresContext()));
   nsPoint ptInRoot =
     nsLayoutUtils::GetEventCoordinatesRelativeTo(widget, pt, rootFrame);
   nsIFrame* targetFrame = nsLayoutUtils::GetFrameForPoint(rootFrame, ptInRoot);
   // This can happen if the page hasn't loaded yet or if the point
   // is outside the frame.
   if (!targetFrame) {
     return NS_ERROR_INVALID_ARG;
   }
   // Convert point to coordinates relative to the target frame, which is
   // what targetFrame's SelectByTypeAtPoint expects.
   nsPoint relPoint =
     nsLayoutUtils::GetEventCoordinatesRelativeTo(widget, pt, targetFrame);
   nsresult rv =
     static_cast<nsFrame*>(targetFrame)->
       SelectByTypeAtPoint(GetPresContext(), relPoint, amount, amount,
                           nsFrame::SELECT_ACCUMULATE);
   *_retval = !NS_FAILED(rv);
   return NS_OK;
 }
 static nsIDocument::additionalSheetType
 convertSheetType(uint32_t aSheetType)
 {
   switch(aSheetType) {
     case nsDOMWindowUtils::AGENT_SHEET:
       return nsIDocument::eAgentSheet;
     case nsDOMWindowUtils::USER_SHEET:
       return nsIDocument::eUserSheet;
     case nsDOMWindowUtils::AUTHOR_SHEET:
       return nsIDocument::eAuthorSheet;
     default:
       NS_ASSERTION(false, "wrong type");
       // we must return something although this should never happen
       return nsIDocument::SheetTypeCount;
   }
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::LoadSheet(nsIURI *aSheetURI, uint32_t aSheetType)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aSheetURI);
   NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
                 aSheetType == USER_SHEET ||
                 aSheetType == AUTHOR_SHEET);
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
   nsIDocument::additionalSheetType type = convertSheetType(aSheetType);
   return doc->LoadAdditionalStyleSheet(type, aSheetURI);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::RemoveSheet(nsIURI *aSheetURI, uint32_t aSheetType)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_ARG_POINTER(aSheetURI);
   NS_ENSURE_ARG(aSheetType == AGENT_SHEET ||
                 aSheetType == USER_SHEET ||
                 aSheetType == AUTHOR_SHEET);
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
   nsIDocument::additionalSheetType type = convertSheetType(aSheetType);
   doc->RemoveAdditionalStyleSheet(type, aSheetURI);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsHandlingUserInput(bool* aHandlingUserInput)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   *aHandlingUserInput = EventStateManager::IsHandlingUserInput();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::AllowScriptsToClose()
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   static_cast<nsGlobalWindow*>(window.get())->AllowScriptsToClose();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetIsParentWindowMainWidgetVisible(bool* aIsVisible)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // this should reflect the "is parent window visible" logic in
   // nsWindowWatcher::OpenWindowInternal()
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   nsCOMPtr<nsIWidget> parentWidget;
   nsIDocShell *docShell = window->GetDocShell();
   if (docShell) {
     if (TabChild *tabChild = TabChild::GetFrom(docShell)) {
       if (!tabChild->SendIsParentWindowMainWidgetVisible(aIsVisible))
         return NS_ERROR_FAILURE;
       return NS_OK;
     }
     nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
     docShell->GetTreeOwner(getter_AddRefs(parentTreeOwner));
     nsCOMPtr<nsIBaseWindow> parentWindow(do_GetInterface(parentTreeOwner));
     if (parentWindow) {
         parentWindow->GetMainWidget(getter_AddRefs(parentWidget));
     }
   }
   if (!parentWidget) {
     return NS_ERROR_NOT_AVAILABLE;
   }
   *aIsVisible = parentWidget->IsVisible();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::IsNodeDisabledForEvents(nsIDOMNode* aNode, bool* aRetVal)
 {
   *aRetVal = false;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsINode> n = do_QueryInterface(aNode);
   nsINode* node = n;
   while (node) {
     if (node->IsNodeOfType(nsINode::eHTML_FORM_CONTROL)) {
       nsCOMPtr<nsIFormControl> fc = do_QueryInterface(node);
       if (fc && fc->IsDisabledForEvents(NS_EVENT_NULL)) {
         *aRetVal = true;
         break;
       }
     }
     node = node->GetParentNode();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetPaintFlashing(bool aPaintFlashing)
 {
   nsPresContext* presContext = GetPresContext();
   if (presContext) {
     presContext->SetPaintFlashing(aPaintFlashing);
     // Clear paint flashing colors
     nsIPresShell* presShell = GetPresShell();
     if (!aPaintFlashing && presShell) {
       nsIFrame* rootFrame = presShell->GetRootFrame();
       if (rootFrame) {
         rootFrame->InvalidateFrameSubtree();
       }
     }
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetPaintFlashing(bool* aRetVal)
 {
   *aRetVal = false;
   nsPresContext* presContext = GetPresContext();
   if (presContext) {
     *aRetVal = presContext->GetPaintFlashing();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::DispatchEventToChromeOnly(nsIDOMEventTarget* aTarget,
                                             nsIDOMEvent* aEvent,
                                             bool* aRetVal)
 {
   *aRetVal = false;
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   NS_ENSURE_STATE(aTarget && aEvent);
   aEvent->GetInternalNSEvent()->mFlags.mOnlyChromeDispatch = true;
   aTarget->DispatchEvent(aEvent, aRetVal);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::RunInStableState(nsIRunnable *runnable)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIAppShell> appShell(do_GetService(kAppShellCID));
   if (!appShell) {
     return NS_ERROR_NOT_AVAILABLE;
   }
   return appShell->RunInStableState(runnable);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::RunBeforeNextEvent(nsIRunnable *runnable)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsIAppShell> appShell(do_GetService(kAppShellCID));
   if (!appShell) {
     return NS_ERROR_NOT_AVAILABLE;
   }
   return appShell->RunBeforeNextEvent(runnable);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetOMTAStyle(nsIDOMElement* aElement,
                                const nsAString& aProperty,
                                nsAString& aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<Element> element = do_QueryInterface(aElement);
   if (!element) {
     return NS_ERROR_INVALID_ARG;
   }
   nsRefPtr<nsROCSSPrimitiveValue> cssValue = nullptr;
   nsIFrame* frame = element->GetPrimaryFrame();
   if (frame && nsLayoutUtils::AreAsyncAnimationsEnabled()) {
     if (aProperty.EqualsLiteral("opacity")) {
       Layer* layer =
         FrameLayerBuilder::GetDedicatedLayer(frame,
                                              nsDisplayItem::TYPE_OPACITY);
       if (layer) {
         float value;
         ShadowLayerForwarder* forwarder = layer->Manager()->AsShadowForwarder();
         if (forwarder && forwarder->HasShadowManager()) {
           forwarder->GetShadowManager()->SendGetOpacity(
             layer->AsShadowableLayer()->GetShadow(), &value);
           cssValue = new nsROCSSPrimitiveValue;
           cssValue->SetNumber(value);
         }
       }
     } else if (aProperty.EqualsLiteral("transform")) {
       Layer* layer =
         FrameLayerBuilder::GetDedicatedLayer(frame,
                                              nsDisplayItem::TYPE_TRANSFORM);
       if (layer) {
         ShadowLayerForwarder* forwarder = layer->Manager()->AsShadowForwarder();
         if (forwarder && forwarder->HasShadowManager()) {
           MaybeTransform transform;
           forwarder->GetShadowManager()->SendGetAnimationTransform(
             layer->AsShadowableLayer()->GetShadow(), &transform);
           if (transform.type() == MaybeTransform::Tgfx3DMatrix) {
             cssValue =
               nsComputedDOMStyle::MatrixToCSSValue(transform.get_gfx3DMatrix());
           }
         }
       }
     }
   }
   if (cssValue) {
     nsString text;
     ErrorResult rv;
     cssValue->GetCssText(text, rv);
     aResult.Assign(text);
     return rv.ErrorCode();
   } else {
     aResult.Truncate();
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetOMTAOrComputedStyle(nsIDOMElement* aElement,
                                          const nsAString& aProperty,
                                          nsAString& aResult)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   // Try to get OMTA style
   nsresult rv = GetOMTAStyle(aElement, aProperty, aResult);
   if (NS_FAILED(rv) || !aResult.IsEmpty()) {
     return rv;
   }
   // Otherwise, fall back to computed style
   nsCOMPtr<Element> element = do_QueryInterface(aElement);
   if (!element) {
     return NS_ERROR_INVALID_ARG;
   }
   nsCOMPtr<nsIDOMCSSStyleDeclaration> style;
   rv = element->GetCurrentDoc()->GetWindow()->
     GetComputedStyle(aElement, aProperty, getter_AddRefs(style));
   NS_ENSURE_SUCCESS(rv, rv);
   return style->GetPropertyValue(aProperty, aResult);
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetAudioMuted(bool* aMuted)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   *aMuted = window->GetAudioMuted();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetAudioMuted(bool aMuted)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   window->SetAudioMuted(aMuted);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::GetAudioVolume(float* aVolume)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   *aVolume = window->GetAudioVolume();
   return NS_OK;
 }
 NS_IMETHODIMP
 nsDOMWindowUtils::SetAudioVolume(float aVolume)
 {
   if (!nsContentUtils::IsCallerChrome()) {
     return NS_ERROR_DOM_SECURITY_ERR;
   }
   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
   NS_ENSURE_STATE(window);
   return window->SetAudioVolume(aVolume);
 }
 NS_INTERFACE_MAP_BEGIN(nsTranslationNodeList)
   NS_INTERFACE_MAP_ENTRY(nsISupports)
   NS_INTERFACE_MAP_ENTRY(nsITranslationNodeList)
 NS_INTERFACE_MAP_END
 NS_IMPL_ADDREF(nsTranslationNodeList)
 NS_IMPL_RELEASE(nsTranslationNodeList)
 NS_IMETHODIMP
 nsTranslationNodeList::Item(uint32_t aIndex, nsIDOMNode** aRetVal)
 {
   NS_ENSURE_ARG_POINTER(aRetVal);
   NS_IF_ADDREF(*aRetVal = mNodes.SafeElementAt(aIndex));
   return NS_OK;
 }
 NS_IMETHODIMP
 nsTranslationNodeList::IsTranslationRootAtIndex(uint32_t aIndex, bool* aRetVal)
 {
   NS_ENSURE_ARG_POINTER(aRetVal);
   if (aIndex >= mLength) {
     *aRetVal = false;
     return NS_OK;
   }
   *aRetVal = mNodeIsRoot.ElementAt(aIndex);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsTranslationNodeList::GetLength(uint32_t* aRetVal)
 {
   NS_ENSURE_ARG_POINTER(aRetVal);
   *aRetVal = mLength;
   return NS_OK;
 }

The Tor Browser / annotate

dom/base/nsDOMWindowUtils.cpp@b8a032363ba2 (annotated)

dom/base/nsDOMWindowUtils.cpp