author Boris Zbarsky <>
Tue, 09 Oct 2018 17:02:13 -0400
changeset 496101 296fa4a869ae27297569005bb09b5bc4f3750ca0
parent 494539 c5858df458e7635a6630d20c884ee4363eb1fd65
child 496168 61ad878d2f66d0b129b326a526e6dff46d839e94
permissions -rw-r--r--
Bug 1497658 part 2. Stop using GetCurrentJSContext in CallerInnerWindow. r=mccr8 We're always called from script, so just pass through the JSContext.

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

#ifndef nsGlobalWindowOuter_h___
#define nsGlobalWindowOuter_h___

#include "nsPIDOMWindow.h"

#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "nsRefPtrHashtable.h"
#include "nsInterfaceHashtable.h"

// Local Includes
// Helper Classes
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsWeakReference.h"
#include "nsDataHashtable.h"
#include "nsJSThingHashtable.h"
#include "nsCycleCollectionParticipant.h"

// Interfaces Needed
#include "nsIBrowserDOMWindow.h"
#include "nsIInterfaceRequestor.h"
#include "nsIDOMChromeWindow.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsITimer.h"
#include "mozilla/EventListenerManager.h"
#include "nsIPrincipal.h"
#include "nsSize.h"
#include "mozilla/FlushType.h"
#include "prclist.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/ChromeMessageBroadcaster.h"
#include "mozilla/dom/StorageEvent.h"
#include "mozilla/dom/StorageEventBinding.h"
#include "mozilla/dom/UnionTypes.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/Attributes.h"
#include "mozilla/GuardObjects.h"
#include "mozilla/LinkedList.h"
#include "nsWrapperCacheInlines.h"
#include "nsIDocument.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/WindowBinding.h"
#include "Units.h"
#include "nsComponentManagerUtils.h"
#include "nsSize.h"
#include "nsCheapSets.h"
#include "mozilla/dom/ImageBitmapSource.h"
#include "mozilla/UniquePtr.h"

class nsIArray;
class nsIBaseWindow;
class nsIContent;
class nsICSSDeclaration;
class nsIDocShellTreeOwner;
class nsIDOMWindowUtils;
class nsIScrollableFrame;
class nsIControllers;
class nsIJSID;
class nsIScriptContext;
class nsIScriptTimeoutHandler;
class nsITabChild;
class nsITimeoutHandler;
class nsIWebBrowserChrome;
class mozIDOMWindowProxy;

class nsDocShellLoadInfo;
class nsDOMWindowList;
class nsScreen;
class nsHistory;
class nsGlobalWindowObserver;
class nsGlobalWindowInner;
class nsDOMWindowUtils;
class nsIIdleService;
struct nsRect;

class nsWindowSizes;

class IdleRequestExecutor;

struct IdleObserverHolder;

namespace mozilla {
class AbstractThread;
class DOMEventTargetHelper;
class ThrottledEventQueue;
namespace dom {
class BarProp;
struct ChannelPixelLayout;
class Console;
class Crypto;
class CustomElementRegistry;
class DocGroup;
class External;
class Function;
class Gamepad;
enum class ImageBitmapFormat : uint8_t;
class IdleRequest;
class IdleRequestCallback;
class IncrementalRunnable;
class IntlUtils;
class Location;
class MediaQueryList;
class Navigator;
class OwningExternalOrWindowProxy;
class Promise;
class PostMessageEvent;
struct RequestInit;
class RequestOrUSVString;
class Selection;
class SpeechSynthesis;
class TabGroup;
class Timeout;
class U2F;
class VRDisplay;
enum class VRDisplayEventReason : uint8_t;
class VREventObserver;
class WakeLock;
class WindowOrientationObserver;
class Worklet;
namespace cache {
class CacheStorage;
} // namespace cache
class IDBFactory;
} // namespace dom
} // namespace mozilla

extern already_AddRefed<nsIScriptTimeoutHandler>
NS_CreateJSTimeoutHandler(JSContext* aCx, nsGlobalWindowInner *aWindow,
                          mozilla::dom::Function& aFunction,
                          const mozilla::dom::Sequence<JS::Value>& aArguments,
                          mozilla::ErrorResult& aError);

extern already_AddRefed<nsIScriptTimeoutHandler>
NS_CreateJSTimeoutHandler(JSContext* aCx, nsGlobalWindowInner *aWindow,
                          const nsAString& aExpression,
                          mozilla::ErrorResult& aError);

extern const js::Class OuterWindowProxyClass;

// nsGlobalWindowOuter

// nsGlobalWindowOuter inherits PRCList for maintaining a list of all inner
// windows still in memory for any given outer window. This list is needed to
// ensure that mOuterWindow doesn't end up dangling. The nature of PRCList means
// that the window itself is always in the list, and an outer window's list will
// also contain all inner window objects that are still in memory (and in
// reality all inner window object's lists also contain its outer and all other
// inner windows belonging to the same outer window, but that's an unimportant
// side effect of inheriting PRCList).

class nsGlobalWindowOuter final
  : public mozilla::dom::EventTarget
  , public nsPIDOMWindowOuter
  , private nsIDOMWindow
    // NOTE: This interface is private, as it's only
    // implemented on chrome windows.
  , private nsIDOMChromeWindow
  , public nsIScriptGlobalObject
  , public nsIScriptObjectPrincipal
  , public nsSupportsWeakReference
  , public nsIInterfaceRequestor
  , public PRCListStr
  typedef nsDataHashtable<nsUint64HashKey, nsGlobalWindowOuter*> OuterWindowByIdTable;

  static void
#ifdef DEBUG
  { }

  static nsGlobalWindowOuter* Cast(nsPIDOMWindowOuter* aPIWin) {
    return static_cast<nsGlobalWindowOuter*>(aPIWin);
  static const nsGlobalWindowOuter* Cast(const nsPIDOMWindowOuter* aPIWin) {
    return static_cast<const nsGlobalWindowOuter*>(aPIWin);
  static nsGlobalWindowOuter* Cast(mozIDOMWindowProxy* aWin) {
    return Cast(nsPIDOMWindowOuter::From(aWin));

  static nsGlobalWindowOuter*
  GetOuterWindowWithId(uint64_t aWindowID)

    if (!sOuterWindowsById) {
      return nullptr;

    nsGlobalWindowOuter* outerWindow = sOuterWindowsById->Get(aWindowID);
    return outerWindow;

  static OuterWindowByIdTable* GetWindowsTable() {

    return sOuterWindowsById;

  static nsGlobalWindowOuter *FromSupports(nsISupports *supports)
    // Make sure this matches the casts we do in QueryInterface().
    return (nsGlobalWindowOuter *)(mozilla::dom::EventTarget *)supports;

  static already_AddRefed<nsGlobalWindowOuter> Create(bool aIsChrome);

  // public methods
  nsPIDOMWindowOuter* GetPrivateParent();

  // callback for close event
  void ReallyCloseWindow();

  // nsISupports

  // nsWrapperCache
  virtual JSObject *WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override
    return EnsureInnerWindow() ? GetWrapper() : nullptr;

  // nsIGlobalJSObjectHolder
  virtual JSObject* GetGlobalJSObject() override;

  // nsIScriptGlobalObject
  JSObject *FastGetGlobalJSObject() const
    return GetWrapperPreserveColor();

  virtual nsresult EnsureScriptEnvironment() override;

  virtual nsIScriptContext *GetScriptContext() override;

  void PoisonOuterWindowProxy(JSObject *aObject);

  virtual bool IsBlackForCC(bool aTracingNeeded = true) override;

  // nsIScriptObjectPrincipal
  virtual nsIPrincipal* GetPrincipal() override;

  // nsIDOMWindow

  // nsIDOMChromeWindow (only implemented on chrome windows)

  mozilla::dom::ChromeMessageBroadcaster* GetMessageManager();
  mozilla::dom::ChromeMessageBroadcaster* GetGroupMessageManager(const nsAString& aGroup);

  OpenJS(const nsAString& aUrl, const nsAString& aName,
         const nsAString& aOptions, nsPIDOMWindowOuter **_retval);

  virtual mozilla::EventListenerManager*
    GetExistingListenerManager() const override;

  virtual mozilla::EventListenerManager*
    GetOrCreateListenerManager() override;

  bool ComputeDefaultWantsUntrusted(mozilla::ErrorResult& aRv) final;

  virtual nsPIDOMWindowOuter* GetOwnerGlobalForBindings() override;

  virtual nsIGlobalObject* GetOwnerGlobal() const override;

  EventTarget* GetTargetForEventTargetChain() override;

  using mozilla::dom::EventTarget::DispatchEvent;
  bool DispatchEvent(mozilla::dom::Event& aEvent,
                     mozilla::dom::CallerType aCallerType,
                     mozilla::ErrorResult& aRv) override;

  void GetEventTargetParent(mozilla::EventChainPreVisitor& aVisitor) override;

  nsresult PostHandleEvent(mozilla::EventChainPostVisitor& aVisitor) override;

  // nsPIDOMWindow
  virtual nsPIDOMWindowOuter* GetPrivateRoot() override;

  // Outer windows only.
  virtual void ActivateOrDeactivate(bool aActivate) override;
  virtual void SetActive(bool aActive) override;
  virtual bool IsTopLevelWindowActive() override;
  virtual void SetIsBackground(bool aIsBackground) override;
  virtual void SetChromeEventHandler(mozilla::dom::EventTarget* aChromeEventHandler) override;

  // Outer windows only.
  virtual void SetInitialPrincipalToSubject() override;

  virtual PopupControlState PushPopupControlState(PopupControlState state, bool aForce) const override;
  virtual void PopPopupControlState(PopupControlState state) const override;
  virtual PopupControlState GetPopupControlState() const override;

  virtual already_AddRefed<nsISupports> SaveWindowState() override;
  virtual nsresult RestoreWindowState(nsISupports *aState) override;

  virtual bool IsSuspended() const override;
  virtual bool IsFrozen() const override;

  virtual nsresult FireDelayedDOMEvents() override;

  // Outer windows only.
  bool WouldReuseInnerWindow(nsIDocument* aNewDocument);

  void SetDocShell(nsIDocShell* aDocShell);
  void DetachFromDocShell();

  virtual nsresult SetNewDocument(nsIDocument *aDocument,
                                  nsISupports *aState,
                                  bool aForceReuseInnerWindow) override;

  // Outer windows only.
  void DispatchDOMWindowCreated();

  virtual void SetOpenerWindow(nsPIDOMWindowOuter* aOpener,
                               bool aOriginalOpener) override;

  // Outer windows only.
  virtual void EnsureSizeAndPositionUpToDate() override;

  virtual void EnterModalState() override;
  virtual void LeaveModalState() override;

  // Outer windows only.
  virtual bool CanClose() override;
  virtual void ForceClose() override;

  // Outer windows only.
  virtual bool DispatchCustomEvent(const nsAString& aEventName) override;
  bool DispatchResizeEvent(const mozilla::CSSIntSize& aSize);

  // For accessing protected field mFullscreen
  friend class FullscreenTransitionTask;

  // Outer windows only.
  nsresult SetFullscreenInternal(
    FullscreenReason aReason, bool aIsFullscreen) final;
  void FullscreenWillChange(bool aIsFullscreen) final;
  void FinishFullscreenChange(bool aIsFullscreen) final;
  bool SetWidgetFullscreen(FullscreenReason aReason, bool aIsFullscreen,
                           nsIWidget* aWidget, nsIScreen* aScreen);
  bool Fullscreen() const;

  // nsIInterfaceRequestor

  already_AddRefed<nsPIDOMWindowOuter> IndexedGetterOuter(uint32_t aIndex);

  already_AddRefed<nsPIDOMWindowOuter> GetTop() override;
  nsPIDOMWindowOuter* GetScriptableTop() override;
  inline nsGlobalWindowOuter *GetTopInternal();

  inline nsGlobalWindowOuter* GetScriptableTopInternal();

  nsPIDOMWindowOuter* GetChildWindow(const nsAString& aName);

  // These return true if we've reached the state in this top level window
  // where we ask the user if further dialogs should be blocked.
  // DialogsAreBeingAbused must be called on the scriptable top inner window.
  // ShouldPromptToBlockDialogs is implemented in terms of
  // DialogsAreBeingAbused, and will get the scriptable top inner window
  // automatically.
  // Outer windows only.
  bool ShouldPromptToBlockDialogs();

  // These functions are used for controlling and determining whether dialogs
  // (alert, prompt, confirm) are currently allowed in this window.  If you want
  // to temporarily disable dialogs, please use TemporarilyDisableDialogs, not
  // EnableDialogs/DisableDialogs, because correctly determining whether to
  // re-enable dialogs is actually quite difficult.
  void EnableDialogs();
  void DisableDialogs();
  // Outer windows only.
  bool AreDialogsEnabled();

  class MOZ_RAII TemporarilyDisableDialogs
    explicit TemporarilyDisableDialogs(nsGlobalWindowOuter* aWindow


    // Always an inner window; this is the window whose dialog state we messed
    // with.  We just want to keep it alive, because we plan to poke at its
    // members in our destructor.
    RefPtr<nsGlobalWindowInner> mTopWindow;
    // This is not a AutoRestore<bool> because that would require careful
    // member destructor ordering, which is a bit fragile.  This way we can
    // explicitly restore things before we drop our ref to mTopWindow.
    bool mSavedDialogsEnabled;
  friend class TemporarilyDisableDialogs;

  nsIScriptContext *GetContextInternal();

  nsGlobalWindowOuter *GetOuterWindowInternal();

  nsGlobalWindowInner* GetCurrentInnerWindowInternal() const;

  nsGlobalWindowInner* EnsureInnerWindowInternal();

  bool IsCreatingInnerWindow() const
    return mCreatingInnerWindow;

  bool IsChromeWindow() const
    return mIsChrome;

  // GetScrollFrame does not flush.  Callers should do it themselves as needed,
  // depending on which info they actually want off the scrollable frame.
  nsIScrollableFrame *GetScrollFrame();

  // Outer windows only.
  void UnblockScriptedClosing();

  static void Init();
  static void ShutDown();
  static bool IsCallerChrome();

  friend class WindowStateHolder;


  virtual bool TakeFocus(bool aFocus, uint32_t aFocusMethod) override;
  virtual void SetReadyForFocus() override;
  virtual void PageHidden() override;

  virtual nsresult SetArguments(nsIArray* aArguments) override;

  void MaybeForgiveSpamCount();
  bool IsClosedOrClosing() {
    return (mIsClosed ||
            mInClose ||
            mHavePendingClose ||

  IsCleanedUp() const
    return mCleanedUp;

  HadOriginalOpener() const
    return mHadOriginalOpener;

  bool IsTopLevelWindow();

  virtual void
  FirePopupBlockedEvent(nsIDocument* aDoc,
                        nsIURI* aPopupURI,
                        const nsAString& aPopupWindowName,
                        const nsAString& aPopupWindowFeatures) override;

  virtual void
  NotifyContentBlockingState(unsigned aState,
                             nsIChannel* aChannel,
                             bool aBlocked,
                             nsIURI* aURIHint) override;

  virtual uint32_t GetSerial() override {
    return mSerial;

  void AddSizeOfIncludingThis(nsWindowSizes& aWindowSizes) const;

  void AllowScriptsToClose()
    mAllowScriptsToClose = true;

  // Outer windows only.
  uint32_t GetAutoActivateVRDisplayID();
  // Outer windows only.
  void SetAutoActivateVRDisplayID(uint32_t aAutoActivateVRDisplayID);

#define EVENT(name_, id_, type_, struct_)                                     \
  mozilla::dom::EventHandlerNonNull* GetOn##name_()                           \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetExistingListenerManager();        \
    return elm ? elm->GetEventHandler(nsGkAtoms::on##name_) : nullptr;        \
  }                                                                           \
  void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler)               \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetOrCreateListenerManager();        \
    if (elm) {                                                                \
      elm->SetEventHandler(nsGkAtoms::on##name_, handler);                    \
    }                                                                         \
#define ERROR_EVENT(name_, id_, type_, struct_)                               \
  mozilla::dom::OnErrorEventHandlerNonNull* GetOn##name_()                    \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetExistingListenerManager();        \
    return elm ? elm->GetOnErrorEventHandler() : nullptr;                     \
  }                                                                           \
  void SetOn##name_(mozilla::dom::OnErrorEventHandlerNonNull* handler)        \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetOrCreateListenerManager();        \
    if (elm) {                                                                \
      elm->SetEventHandler(handler);                                          \
    }                                                                         \
#define BEFOREUNLOAD_EVENT(name_, id_, type_, struct_)                        \
  mozilla::dom::OnBeforeUnloadEventHandlerNonNull* GetOn##name_()             \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetExistingListenerManager();        \
    return elm ? elm->GetOnBeforeUnloadEventHandler() : nullptr;              \
  }                                                                           \
  void SetOn##name_(mozilla::dom::OnBeforeUnloadEventHandlerNonNull* handler) \
  {                                                                           \
    mozilla::EventListenerManager* elm = GetOrCreateListenerManager();        \
    if (elm) {                                                                \
      elm->SetEventHandler(handler);                                          \
    }                                                                         \
#include "mozilla/EventNameList.h"
#undef EVENT

  nsISupports* GetParentObject()
    return nullptr;

  nsIDocument* GetDocument()
    return GetDoc();
  void GetNameOuter(nsAString& aName);
  void SetNameOuter(const nsAString& aName, mozilla::ErrorResult& aError);
  mozilla::dom::Location* GetLocation() override;
  void GetStatusOuter(nsAString& aStatus);
  void SetStatusOuter(const nsAString& aStatus);
  void CloseOuter(bool aTrustedCaller);
  nsresult Close() override;
  bool GetClosedOuter();
  bool Closed() override;
  void StopOuter(mozilla::ErrorResult& aError);
  void FocusOuter(mozilla::ErrorResult& aError);
  nsresult Focus() override;
  void BlurOuter();
  already_AddRefed<nsPIDOMWindowOuter> GetFramesOuter();
  nsDOMWindowList* GetFrames() final;
  uint32_t Length();
  already_AddRefed<nsPIDOMWindowOuter> GetTopOuter();

  nsresult GetPrompter(nsIPrompt** aPrompt) override;
  explicit nsGlobalWindowOuter();
  nsPIDOMWindowOuter* GetOpenerWindowOuter();
  // Initializes the mWasOffline member variable
  void InitWasOffline();
  GetSanitizedOpener(nsPIDOMWindowOuter* aOpener);

  already_AddRefed<nsPIDOMWindowOuter> GetOpener() override;
  already_AddRefed<nsPIDOMWindowOuter> GetParentOuter();
  already_AddRefed<nsPIDOMWindowOuter> GetParent() override;
  nsPIDOMWindowOuter* GetScriptableParent() override;
  nsPIDOMWindowOuter* GetScriptableParentOrNull() override;
  GetFrameElementOuter(nsIPrincipal& aSubjectPrincipal);
  mozilla::dom::Element* GetFrameElement() override;
  OpenOuter(const nsAString& aUrl,
            const nsAString& aName,
            const nsAString& aOptions,
            mozilla::ErrorResult& aError);
  nsresult Open(const nsAString& aUrl, const nsAString& aName,
                const nsAString& aOptions,
                nsDocShellLoadInfo* aLoadInfo,
                bool aForceNoOpener,
                nsPIDOMWindowOuter **_retval) override;
  mozilla::dom::Navigator* GetNavigator() override;

  int16_t Orientation(mozilla::dom::CallerType aCallerType) const;

  bool AlertOrConfirm(bool aAlert, const nsAString& aMessage,
                      nsIPrincipal& aSubjectPrincipal,
                      mozilla::ErrorResult& aError);

  void AlertOuter(const nsAString& aMessage,
                  nsIPrincipal& aSubjectPrincipal,
                  mozilla::ErrorResult& aError);
  bool ConfirmOuter(const nsAString& aMessage,
                    nsIPrincipal& aSubjectPrincipal,
                    mozilla::ErrorResult& aError);
  void PromptOuter(const nsAString& aMessage, const nsAString& aInitial,
                   nsAString& aReturn,
                   nsIPrincipal& aSubjectPrincipal,
                   mozilla::ErrorResult& aError);
  void PrintOuter(mozilla::ErrorResult& aError);
  mozilla::dom::Selection* GetSelectionOuter();
  already_AddRefed<mozilla::dom::Selection> GetSelection() override;
  already_AddRefed<mozilla::dom::MediaQueryList> MatchMediaOuter(
    const nsAString& aQuery,
    mozilla::dom::CallerType aCallerType);
  nsScreen* GetScreen();
  void MoveToOuter(int32_t aXPos, int32_t aYPos,
                   mozilla::dom::CallerType aCallerType,
                   mozilla::ErrorResult& aError);
  void MoveByOuter(int32_t aXDif, int32_t aYDif,
                   mozilla::dom::CallerType aCallerType,
                   mozilla::ErrorResult& aError);
  nsresult MoveBy(int32_t aXDif, int32_t aYDif) override;
  void ResizeToOuter(int32_t aWidth, int32_t aHeight,
                     mozilla::dom::CallerType aCallerType,
                     mozilla::ErrorResult& aError);
  void ResizeByOuter(int32_t aWidthDif, int32_t aHeightDif,
                     mozilla::dom::CallerType aCallerType,
                     mozilla::ErrorResult& aError);
  double GetScrollXOuter();
  double GetScrollYOuter();

  void SizeToContentOuter(mozilla::dom::CallerType aCallerType,
                          mozilla::ErrorResult& aError);
  nsIControllers* GetControllersOuter(mozilla::ErrorResult& aError);
  nsresult GetControllers(nsIControllers** aControllers) override;
  mozilla::dom::Element* GetRealFrameElementOuter();
  float GetMozInnerScreenXOuter(mozilla::dom::CallerType aCallerType);
  float GetMozInnerScreenYOuter(mozilla::dom::CallerType aCallerType);
  double GetDevicePixelRatioOuter(mozilla::dom::CallerType aCallerType);
  bool GetFullscreenOuter();
  bool GetFullScreen() override;
  void SetFullscreenOuter(bool aFullscreen, mozilla::ErrorResult& aError);
  nsresult SetFullScreen(bool aFullscreen) override;
  bool FindOuter(const nsAString& aString, bool aCaseSensitive, bool aBackwards,
                 bool aWrapAround, bool aWholeWord, bool aSearchInFrames,
                 bool aShowDialog, mozilla::ErrorResult& aError);
  uint64_t GetMozPaintCountOuter();

  bool ShouldResistFingerprinting();

  OpenDialogOuter(JSContext* aCx,
                  const nsAString& aUrl,
                  const nsAString& aName,
                  const nsAString& aOptions,
                  const mozilla::dom::Sequence<JS::Value>& aExtraArgument,
                  mozilla::ErrorResult& aError);
  nsresult OpenDialog(const nsAString& aUrl, const nsAString& aName,
                      const nsAString& aOptions,
                      nsISupports* aExtraArgument,
                      nsPIDOMWindowOuter** _retval) override;
  void UpdateCommands(const nsAString& anAction, mozilla::dom::Selection* aSel,
                      int16_t aReason) override;

  GetContentInternal(mozilla::ErrorResult& aError,
                     mozilla::dom::CallerType aCallerType);
  void GetContentOuter(JSContext* aCx,
                       JS::MutableHandle<JSObject*> aRetval,
                       mozilla::dom::CallerType aCallerType,
                       mozilla::ErrorResult& aError);
  already_AddRefed<nsPIDOMWindowOuter> GetContent()
    nsCOMPtr<nsPIDOMWindowOuter> win =
    return win.forget();

  // ChromeWindow bits.  Do NOT call these unless your window is in
  // fact chrome.
  nsIBrowserDOMWindow* GetBrowserDOMWindowOuter();
  void SetBrowserDOMWindowOuter(nsIBrowserDOMWindow* aBrowserWindow);
  void SetCursorOuter(const nsAString& aCursor, mozilla::ErrorResult& aError);

  void GetDialogArgumentsOuter(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval,
                               nsIPrincipal& aSubjectPrincipal,
                               mozilla::ErrorResult& aError);
  void GetDialogArguments(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval,
                          nsIPrincipal& aSubjectPrincipal,
                          mozilla::ErrorResult& aError);
  void GetReturnValueOuter(JSContext* aCx, JS::MutableHandle<JS::Value> aReturnValue,
                           nsIPrincipal& aSubjectPrincipal,
                           mozilla::ErrorResult& aError);
  void GetReturnValue(JSContext* aCx, JS::MutableHandle<JS::Value> aReturnValue,
                      nsIPrincipal& aSubjectPrincipal,
                      mozilla::ErrorResult& aError);
  void SetReturnValueOuter(JSContext* aCx, JS::Handle<JS::Value> aReturnValue,
                           nsIPrincipal& aSubjectPrincipal,
                           mozilla::ErrorResult& aError);
  void SetReturnValue(JSContext* aCx, JS::Handle<JS::Value> aReturnValue,
                      nsIPrincipal& aSubjectPrincipal,
                      mozilla::ErrorResult& aError);

  already_AddRefed<nsWindowRoot> GetWindowRootOuter();

  nsIDOMWindowUtils* WindowUtils();

  virtual bool IsInSyncOperation() override
    return GetExtantDoc() && GetExtantDoc()->IsInSyncOperation();

  int32_t GetInnerWidthOuter(mozilla::ErrorResult& aError);
  nsresult GetInnerWidth(int32_t* aWidth) override;
  void SetInnerWidthOuter(int32_t aInnerWidth,
                          mozilla::dom::CallerType aCallerType,
                          mozilla::ErrorResult& aError);
  int32_t GetInnerHeightOuter(mozilla::ErrorResult& aError);
  nsresult GetInnerHeight(int32_t* aHeight) override;
  void SetInnerHeightOuter(int32_t aInnerHeight,
                           mozilla::dom::CallerType aCallerType,
                           mozilla::ErrorResult& aError);
  int32_t GetScreenXOuter(mozilla::dom::CallerType aCallerType,
                          mozilla::ErrorResult& aError);
  void SetScreenXOuter(int32_t aScreenX,
                       mozilla::dom::CallerType aCallerType,
                       mozilla::ErrorResult& aError);
  int32_t GetScreenYOuter(mozilla::dom::CallerType aCallerType,
                          mozilla::ErrorResult& aError);
  void SetScreenYOuter(int32_t aScreenY,
                       mozilla::dom::CallerType aCallerType,
                       mozilla::ErrorResult& aError);
  int32_t GetOuterWidthOuter(mozilla::dom::CallerType aCallerType,
                             mozilla::ErrorResult& aError);
  void SetOuterWidthOuter(int32_t aOuterWidth,
                          mozilla::dom::CallerType aCallerType,
                          mozilla::ErrorResult& aError);
  int32_t GetOuterHeightOuter(mozilla::dom::CallerType aCallerType,
                              mozilla::ErrorResult& aError);
  void SetOuterHeightOuter(int32_t aOuterHeight,
                           mozilla::dom::CallerType aCallerType,
                           mozilla::ErrorResult& aError);

  // Array of idle observers that are notified of idle events.
  nsTObserverArray<IdleObserverHolder> mIdleObservers;

  // Idle timer used for function callbacks to notify idle observers.
  nsCOMPtr<nsITimer> mIdleTimer;

  // Idle fuzz time added to idle timer callbacks.
  uint32_t mIdleFuzzFactor;

  // Index in mArrayIdleObservers
  // Next idle observer to notify user idle status
  int32_t mIdleCallbackIndex;

  // If false then the topic is "active"
  // If true then the topic is "idle"
  bool mCurrentlyIdle;

  // Set to true when a fuzz time needs to be applied
  // to active notifications to the idle observer.
  bool mAddActiveEventFuzzTime;

  nsCOMPtr <nsIIdleService> mIdleService;

  RefPtr<mozilla::dom::WakeLock> mWakeLock;

  friend class HashchangeCallback;
  friend class mozilla::dom::BarProp;

  // Object Management
  virtual ~nsGlobalWindowOuter();
  void DropOuterWindowDocs();
  void CleanUp();
  void ClearControllers();
  // Outer windows only.
  void FinalClose();

  inline void MaybeClearInnerWindow(nsGlobalWindowInner* aExpectedInner);

  // We need a JSContext to get prototypes inside CallerInnerWindow.
  nsGlobalWindowInner* CallerInnerWindow(JSContext* aCx);

  // Get the parent, returns null if this is a toplevel window
  nsPIDOMWindowOuter* GetParentInternal();

  // popup tracking
  bool IsPopupSpamWindow();

  // Outer windows only.
  void SetIsPopupSpamWindow(bool aIsPopupSpam);

  // Window Control Functions

  // Outer windows only.
  virtual nsresult
  OpenNoNavigate(const nsAString& aUrl,
                 const nsAString& aName,
                 const nsAString& aOptions,
                 nsPIDOMWindowOuter** _retval) override;

   * @param aUrl the URL we intend to load into the window.  If aNavigate is
   *        true, we'll actually load this URL into the window. Otherwise,
   *        aUrl is advisory; OpenInternal will not load the URL into the
   *        new window.
   * @param aName the name to use for the new window
   * @param aOptions the window options to use for the new window
   * @param aDialog true when called from variants of OpenDialog.  If this is
   *        true, this method will skip popup blocking checks.  The aDialog
   *        argument is passed on to the window watcher.
   * @param aCalledNoScript true when called via the [noscript] open()
   *        and openDialog() methods.  When this is true, we do NOT want to use
   *        the JS stack for things like caller determination.
   * @param aDoJSFixups true when this is the content-accessible JS version of
   *        window opening.  When true, popups do not cause us to throw, we save
   *        the caller's principal in the new window for later consumption, and
   *        we make sure that there is a document in the newly-opened window.
   *        Note that this last will only be done if the newly-opened window is
   *        non-chrome.
   * @param aNavigate true if we should navigate to the provided URL, false
   *        otherwise.  When aNavigate is false, we also skip our can-load
   *        security check, on the assumption that whoever *actually* loads this
   *        page will do their own security check.
   * @param argv The arguments to pass to the new window.  The first
   *        three args, if present, will be aUrl, aName, and aOptions.  So this
   *        param only matters if there are more than 3 arguments.
   * @param aExtraArgument Another way to pass arguments in.  This is mutually
   *        exclusive with the argv approach.
   * @param aLoadInfo to be passed on along to the windowwatcher.
   * @param aForceNoOpener if true, will act as if "noopener" were passed in
   *                       aOptions, but without affecting any other window
   *                       features.
   * @param aReturn [out] The window that was opened, if any.  Will be null if
   *                      aForceNoOpener is true of if aOptions contains
   *                      "noopener".
   * Outer windows only.
  nsresult OpenInternal(const nsAString& aUrl,
                        const nsAString& aName,
                        const nsAString& aOptions,
                        bool aDialog,
                        bool aContentModal,
                        bool aCalledNoScript,
                        bool aDoJSFixups,
                        bool aNavigate,
                        nsIArray *argv,
                        nsISupports *aExtraArgument,
                        nsDocShellLoadInfo* aLoadInfo,
                        bool aForceNoOpener,
                        nsPIDOMWindowOuter **aReturn);

  // Checks that the channel was loaded by the URI currently loaded in aDoc
  static bool SameLoadingURI(nsIDocument *aDoc, nsIChannel *aChannel);

  // Helper Functions
  already_AddRefed<nsIDocShellTreeOwner> GetTreeOwner();
  already_AddRefed<nsIBaseWindow> GetTreeOwnerWindow();
  already_AddRefed<nsIWebBrowserChrome> GetWebBrowserChrome();
  nsresult SecurityCheckURL(const char *aURL, nsIURI** aURI);

  bool PopupWhitelisted();
  PopupControlState RevisePopupAbuseLevel(PopupControlState);
  void     FireAbuseEvents(const nsAString &aPopupURL,
                           const nsAString &aPopupWindowName,
                           const nsAString &aPopupWindowFeatures);

  void ReportLargeAllocStatus();

  void FlushPendingNotifications(mozilla::FlushType aType);

  // Outer windows only.
  void EnsureReflowFlushAndPaint();
  void CheckSecurityWidthAndHeight(int32_t* width, int32_t* height,
                                   mozilla::dom::CallerType aCallerType);
  void CheckSecurityLeftAndTop(int32_t* left, int32_t* top,
                               mozilla::dom::CallerType aCallerType);

  // Outer windows only.
  // Arguments to this function should have values in app units
  void SetCSSViewportWidthAndHeight(nscoord width, nscoord height);
  // Arguments to this function should have values in device pixels
  nsresult SetDocShellWidthAndHeight(int32_t width, int32_t height);

  static bool CanSetProperty(const char *aPrefName);

  static void MakeScriptDialogTitle(nsAString& aOutTitle,
                                    nsIPrincipal* aSubjectPrincipal);

  // Outer windows only.
  bool CanMoveResizeWindows(mozilla::dom::CallerType aCallerType);

  // If aDoFlush is true, we'll flush our own layout; otherwise we'll try to
  // just flush our parent and only flush ourselves if we think we need to.
  // Outer windows only.
  mozilla::CSSPoint GetScrollXY(bool aDoFlush);

  int32_t GetScrollBoundaryOuter(mozilla::Side aSide);

  // Outer windows only.
  nsresult GetInnerSize(mozilla::CSSIntSize& aSize);
  nsIntSize GetOuterSize(mozilla::dom::CallerType aCallerType,
                         mozilla::ErrorResult& aError);
  void SetOuterSize(int32_t aLengthCSSPixels, bool aIsWidth,
                    mozilla::dom::CallerType aCallerType,
                    mozilla::ErrorResult& aError);
  nsRect GetInnerScreenRect();

  bool IsFrame();

  // Outer windows only.
  // If aLookForCallerOnJSStack is true, this method will look at the JS stack
  // to determine who the caller is.  If it's false, it'll use |this| as the
  // caller.
  bool WindowExists(const nsAString& aName, bool aForceNoOpener,
                    bool aLookForCallerOnJSStack);

  already_AddRefed<nsIWidget> GetMainWidget();
  nsIWidget* GetNearestWidget() const;

  bool IsInModalState();

  bool HasStorageAccess() const
    return mHasStorageAccess;
  void SetHasStorageAccess(bool aHasStorageAccess)
    mHasStorageAccess = aHasStorageAccess;

  // Convenience functions for the many methods that need to scale
  // from device to CSS pixels or vice versa.  Note: if a presentation
  // context is not available, they will assume a 1:1 ratio.
  int32_t DevToCSSIntPixels(int32_t px);
  int32_t CSSToDevIntPixels(int32_t px);
  nsIntSize DevToCSSIntPixels(nsIntSize px);
  nsIntSize CSSToDevIntPixels(nsIntSize px);

  virtual void SetFocusedElement(mozilla::dom::Element* aElement,
                                 uint32_t aFocusMethod = 0,
                                 bool aNeedsFocus = false) override;

  virtual uint32_t GetFocusMethod() override;

  virtual bool ShouldShowFocusRing() override;

  virtual void SetKeyboardIndicators(UIStateChangeType aShowAccelerators,
                                     UIStateChangeType aShowFocusRings) override;

  virtual already_AddRefed<nsPIWindowRoot> GetTopWindowRoot() override;

  void NotifyWindowIDDestroyed(const char* aTopic);

  void ClearStatus();

  virtual void UpdateParentTarget() override;

  void InitializeShowFocusRings();

  // Helper for getComputedStyle and getDefaultComputedStyle
    GetComputedStyleHelperOuter(mozilla::dom::Element& aElt,
                                const nsAString& aPseudoElt,
                                bool aDefaultStylesOnly);

  // Outer windows only.
  void PreloadLocalStorage();

  // Returns CSS pixels based on primary screen.  Outer windows only.
  mozilla::CSSIntPoint GetScreenXY(mozilla::dom::CallerType aCallerType,
                                   mozilla::ErrorResult& aError);

  void PostMessageMozOuter(JSContext* aCx, JS::Handle<JS::Value> aMessage,
                           const nsAString& aTargetOrigin,
                           JS::Handle<JS::Value> aTransfer,
                           nsIPrincipal& aSubjectPrincipal,
                           mozilla::ErrorResult& aError);

  // Ask the user if further dialogs should be blocked, if dialogs are currently
  // being abused. This is used in the cases where we have no modifiable UI to
  // show, in that case we show a separate dialog to ask this question.
  bool ConfirmDialogIfNeeded();

  // Helper called after moving/resizing, to update docShell's presContext
  // if we have caused a resolution change by moving across monitors.
  void CheckForDPIChange();

  enum class SecureContextFlags {
  // Called only on outer windows to compute the value that will be returned by
  // IsSecureContext() for the inner window that corresponds to aDocument.
  bool ComputeIsSecureContext(nsIDocument* aDocument,
                              SecureContextFlags aFlags =

  // nsPIDOMWindow{Inner,Outer} should be able to see these helper methods.
  friend class nsPIDOMWindowInner;
  friend class nsPIDOMWindowOuter;

  mozilla::dom::TabGroup* TabGroupOuter();

  void SetIsBackgroundInternal(bool aIsBackground);

  nsresult GetInterfaceInternal(const nsIID& aIID, void** aSink);

  void MaybeAllowStorageForOpenedWindow(nsIURI* aURI);

  // Dispatch a runnable related to the global.
  virtual nsresult Dispatch(mozilla::TaskCategory aCategory,
                            already_AddRefed<nsIRunnable>&& aRunnable) override;

  virtual nsISerialEventTarget*
  EventTargetFor(mozilla::TaskCategory aCategory) const override;

  virtual mozilla::AbstractThread*
  AbstractMainThreadFor(mozilla::TaskCategory aCategory) override;
  bool                          mFullscreen : 1;
  bool                          mFullscreenMode : 1;
  bool                          mIsClosed : 1;
  bool                          mInClose : 1;
  // mHavePendingClose means we've got a termination function set to
  // close us when the JS stops executing or that we have a close
  // event posted.  If this is set, just ignore window.close() calls.
  bool                          mHavePendingClose : 1;
  bool                          mHadOriginalOpener : 1;
  bool                          mIsPopupSpam : 1;

  // Indicates whether scripts are allowed to close this window.
  bool                          mBlockScriptedClosingFlag : 1;

  // Window offline status. Checked to see if we need to fire offline event
  bool                          mWasOffline : 1;

  // Indicates whether we're in the middle of creating an initializing
  // a new inner window object.
  bool                          mCreatingInnerWindow : 1;

  // Fast way to tell if this is a chrome window (without having to QI).
  bool                          mIsChrome : 1;

  // whether scripts may close the window,
  // even if "dom.allow_scripts_to_close_windows" is false.
  bool                   mAllowScriptsToClose : 1;

  bool mTopLevelOuterContentWindow : 1;

  // whether storage access has been granted to this frame.
  bool mHasStorageAccess : 1;

  nsCOMPtr<nsIScriptContext>    mContext;
  nsWeakPtr                     mOpener;
  nsCOMPtr<nsIControllers>      mControllers;

  // For |window.arguments|, via |openDialog|.
  nsCOMPtr<nsIArray>            mArguments;

  RefPtr<nsDOMWindowList>     mFrames;
  RefPtr<nsDOMWindowUtils>      mWindowUtils;
  nsString                      mStatus;

  RefPtr<mozilla::dom::Storage> mLocalStorage;

  nsCOMPtr<nsIPrincipal> mDocumentPrincipal;

  uint32_t mSerial;

#ifdef DEBUG
  bool mSetOpenerWindowCalled;
  nsCOMPtr<nsIURI> mLastOpenedURI;

  bool mCleanedUp;

  // It's useful when we get matched EnterModalState/LeaveModalState calls, in
  // which case the outer window is responsible for unsuspending events on the
  // document. If we don't (for example, if the outer window is closed before
  // the LeaveModalState call), then the inner window whose mDoc is our
  // mSuspendedDoc is responsible for unsuspending it.
  nsCOMPtr<nsIDocument> mSuspendedDoc;

#ifdef DEBUG
  // This member is used in the debug only assertions in TabGroup()
  // to catch cyclic parent/opener trees and not overflow the stack.
  bool mIsValidatingTabGroup;

  // This is the CC generation the last time we called CanSkip.
  uint32_t mCanSkipCCGeneration;

  // When non-zero, the document should receive a vrdisplayactivate event
  // after loading.  The value is the ID of the VRDisplay that content should
  // begin presentation on.
  uint32_t mAutoActivateVRDisplayID;

  static OuterWindowByIdTable* sOuterWindowsById;

  // Members in the mChromeFields member should only be used in chrome windows.
  // All accesses to this field should be guarded by a check of mIsChrome.
  struct ChromeFields {
    nsCOMPtr<nsIBrowserDOMWindow> mBrowserDOMWindow;
    // A weak pointer to the nsPresShell that we are doing fullscreen for.
    // The pointer being set indicates we've set the IsInFullscreenChange
    // flag on this pres shell.
    nsWeakPtr mFullscreenPresShell;
  } mChromeFields;

  friend class nsDOMScriptableHelper;
  friend class nsDOMWindowUtils;
  friend class mozilla::dom::PostMessageEvent;
  friend class DesktopNotification;
  friend class mozilla::dom::TimeoutManager;
  friend class IdleRequestExecutor;
  friend class nsGlobalWindowInner;

// XXX: EWW - This is an awful hack - let's not do this
#include "nsGlobalWindowInner.h"

inline nsISupports*
ToSupports(nsGlobalWindowOuter *p)
  return static_cast<mozilla::dom::EventTarget*>(p);

inline nsISupports*
ToCanonicalSupports(nsGlobalWindowOuter *p)
  return static_cast<mozilla::dom::EventTarget*>(p);

inline nsIGlobalObject*
nsGlobalWindowOuter::GetOwnerGlobal() const
  return GetCurrentInnerWindowInternal();

inline nsGlobalWindowOuter*
  nsCOMPtr<nsPIDOMWindowOuter> top = GetTop();
  if (top) {
    return nsGlobalWindowOuter::Cast(top);
  return nullptr;

inline nsGlobalWindowOuter*
  nsPIDOMWindowOuter* top = GetScriptableTop();
  return nsGlobalWindowOuter::Cast(top);

inline nsIScriptContext*
  return mContext;

inline nsGlobalWindowOuter*
  return nsGlobalWindowOuter::Cast(GetOuterWindow());

inline nsGlobalWindowInner*
nsGlobalWindowOuter::GetCurrentInnerWindowInternal() const
  return nsGlobalWindowInner::Cast(mInnerWindow);

inline nsGlobalWindowInner*
  return nsGlobalWindowInner::Cast(AsOuter()->EnsureInnerWindow());

inline bool
  nsPIDOMWindowOuter* parentWindow = GetScriptableTop();
  return parentWindow == this->AsOuter();

inline bool
  return mIsPopupSpam;

inline bool
  return GetParentInternal() != nullptr;

inline void
nsGlobalWindowOuter::MaybeClearInnerWindow(nsGlobalWindowInner* aExpectedInner)
  if(mInnerWindow == aExpectedInner->AsInner()) {
    mInnerWindow = nullptr;

/* factory function */
inline already_AddRefed<nsGlobalWindowOuter>
NS_NewScriptGlobalObject(bool aIsChrome)
  return nsGlobalWindowOuter::Create(aIsChrome);

#endif /* nsGlobalWindowOuter_h___ */