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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_CanonicalBrowsingContext_h
+#define mozilla_dom_CanonicalBrowsingContext_h
+
+#include "mozilla/dom/BrowsingContext.h"
+#include "mozilla/dom/MediaControlKeySource.h"
+#include "mozilla/dom/BrowsingContextWebProgress.h"
+#include "mozilla/dom/ProcessIsolation.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/SessionHistoryEntry.h"
+#include "mozilla/dom/SessionStoreRestoreData.h"
+#include "mozilla/dom/SessionStoreUtils.h"
+#include "mozilla/dom/ipc/IdType.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/MozPromise.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+#include "nsTArray.h"
+#include "nsTHashtable.h"
+#include "nsHashKeys.h"
+#include "nsISecureBrowserUI.h"
+
+class nsIBrowserDOMWindow;
+class nsISHistory;
+class nsIWidget;
+class nsIPrintSettings;
+class nsSHistory;
+class nsBrowserStatusFilter;
+class nsSecureBrowserUI;
+class CallerWillNotifyHistoryIndexAndLengthChanges;
+class nsITimer;
+
+namespace mozilla {
+enum class CallState;
+
+namespace embedding {
+class PrintData;
+}
+
+namespace net {
+class DocumentLoadListener;
+}
+
+namespace dom {
+
+class BrowserParent;
+class BrowserBridgeParent;
+class FeaturePolicy;
+struct LoadURIOptions;
+class MediaController;
+struct LoadingSessionHistoryInfo;
+class SSCacheCopy;
+class WindowGlobalParent;
+class SessionStoreFormData;
+class SessionStoreScrollData;
+
+// CanonicalBrowsingContext is a BrowsingContext living in the parent
+// process, with whatever extra data that a BrowsingContext in the
+// parent needs.
+class CanonicalBrowsingContext final : public BrowsingContext {
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
+ CanonicalBrowsingContext, BrowsingContext)
+
+ static already_AddRefed<CanonicalBrowsingContext> Get(uint64_t aId);
+ static CanonicalBrowsingContext* Cast(BrowsingContext* aContext);
+ static const CanonicalBrowsingContext* Cast(const BrowsingContext* aContext);
+ static already_AddRefed<CanonicalBrowsingContext> Cast(
+ already_AddRefed<BrowsingContext>&& aContext);
+
+ bool IsOwnedByProcess(uint64_t aProcessId) const {
+ return mProcessId == aProcessId;
+ }
+ bool IsEmbeddedInProcess(uint64_t aProcessId) const {
+ return mEmbedderProcessId == aProcessId;
+ }
+ uint64_t OwnerProcessId() const { return mProcessId; }
+ uint64_t EmbedderProcessId() const { return mEmbedderProcessId; }
+ ContentParent* GetContentParent() const;
+
+ void GetCurrentRemoteType(nsACString& aRemoteType, ErrorResult& aRv) const;
+
+ void SetOwnerProcessId(uint64_t aProcessId);
+
+ // The ID of the BrowsingContext which caused this BrowsingContext to be
+ // opened, or `0` if this is unknown.
+ // Only set for toplevel content BrowsingContexts, and may be from a different
+ // BrowsingContextGroup.
+ uint64_t GetCrossGroupOpenerId() const { return mCrossGroupOpenerId; }
+ void SetCrossGroupOpenerId(uint64_t aOpenerId);
+ void SetCrossGroupOpener(CanonicalBrowsingContext& aCrossGroupOpener,
+ ErrorResult& aRv);
+
+ void GetWindowGlobals(nsTArray<RefPtr<WindowGlobalParent>>& aWindows);
+
+ // The current active WindowGlobal.
+ WindowGlobalParent* GetCurrentWindowGlobal() const;
+
+ // Same as the methods on `BrowsingContext`, but with the types already cast
+ // to the parent process type.
+ CanonicalBrowsingContext* GetParent() {
+ return Cast(BrowsingContext::GetParent());
+ }
+ CanonicalBrowsingContext* Top() { return Cast(BrowsingContext::Top()); }
+ WindowGlobalParent* GetParentWindowContext();
+ WindowGlobalParent* GetTopWindowContext();
+
+ already_AddRefed<nsIWidget> GetParentProcessWidgetContaining();
+ already_AddRefed<nsIBrowserDOMWindow> GetBrowserDOMWindow();
+
+ // Same as `GetParentWindowContext`, but will also cross <browser> and
+ // content/chrome boundaries.
+ already_AddRefed<WindowGlobalParent> GetEmbedderWindowGlobal() const;
+
+ already_AddRefed<CanonicalBrowsingContext> GetParentCrossChromeBoundary();
+
+ already_AddRefed<CanonicalBrowsingContext> TopCrossChromeBoundary();
+ Nullable<WindowProxyHolder> GetTopChromeWindow();
+
+ nsISHistory* GetSessionHistory();
+ SessionHistoryEntry* GetActiveSessionHistoryEntry();
+ void SetActiveSessionHistoryEntry(SessionHistoryEntry* aEntry);
+
+ UniquePtr<LoadingSessionHistoryInfo> CreateLoadingSessionHistoryEntryForLoad(
+ nsDocShellLoadState* aLoadState, SessionHistoryEntry* aExistingEntry,
+ nsIChannel* aChannel);
+
+ UniquePtr<LoadingSessionHistoryInfo> ReplaceLoadingSessionHistoryEntryForLoad(
+ LoadingSessionHistoryInfo* aInfo, nsIChannel* aNewChannel);
+
+ using PrintPromise = MozPromise</* unused */ bool, nsresult, false>;
+ MOZ_CAN_RUN_SCRIPT RefPtr<PrintPromise> Print(nsIPrintSettings*);
+ MOZ_CAN_RUN_SCRIPT already_AddRefed<Promise> PrintJS(nsIPrintSettings*,
+ ErrorResult&);
+
+ // Call the given callback on all top-level descendant BrowsingContexts.
+ // Return Callstate::Stop from the callback to stop calling
+ // further children.
+ void CallOnAllTopDescendants(
+ const std::function<mozilla::CallState(CanonicalBrowsingContext*)>&
+ aCallback);
+
+ void SessionHistoryCommit(uint64_t aLoadId, const nsID& aChangeID,
+ uint32_t aLoadType, bool aPersist,
+ bool aCloneEntryChildren, bool aChannelExpired,
+ uint32_t aCacheKey);
+
+ // Calls the session history listeners' OnHistoryReload, storing the result in
+ // aCanReload. If aCanReload is set to true and we have an active or a loading
+ // entry then aLoadState will be initialized from that entry, and
+ // aReloadActiveEntry will be true if we have an active entry. If aCanReload
+ // is true and aLoadState and aReloadActiveEntry are not set then we should
+ // attempt to reload based on the current document in the docshell.
+ void NotifyOnHistoryReload(
+ bool aForceReload, bool& aCanReload,
+ Maybe<NotNull<RefPtr<nsDocShellLoadState>>>& aLoadState,
+ Maybe<bool>& aReloadActiveEntry);
+
+ // See BrowsingContext::SetActiveSessionHistoryEntry.
+ void SetActiveSessionHistoryEntry(const Maybe<nsPoint>& aPreviousScrollPos,
+ SessionHistoryInfo* aInfo,
+ uint32_t aLoadType,
+ uint32_t aUpdatedCacheKey,
+ const nsID& aChangeID);
+
+ void ReplaceActiveSessionHistoryEntry(SessionHistoryInfo* aInfo);
+
+ void RemoveDynEntriesFromActiveSessionHistoryEntry();
+
+ void RemoveFromSessionHistory(const nsID& aChangeID);
+
+ Maybe<int32_t> HistoryGo(int32_t aOffset, uint64_t aHistoryEpoch,
+ bool aRequireUserInteraction, bool aUserActivation,
+ Maybe<ContentParentId> aContentId);
+
+ JSObject* WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) override;
+
+ // Dispatches a wheel zoom change to the embedder element.
+ void DispatchWheelZoomChange(bool aIncrease);
+
+ // This function is used to start the autoplay media which are delayed to
+ // start. If needed, it would also notify the content browsing context which
+ // are related with the canonical browsing content tree to start delayed
+ // autoplay media.
+ void NotifyStartDelayedAutoplayMedia();
+
+ // This function is used to mute or unmute all media within a tab. It would
+ // set the media mute property for the top level window and propagate it to
+ // other top level windows in other processes.
+ void NotifyMediaMutedChanged(bool aMuted, ErrorResult& aRv);
+
+ // Return the number of unique site origins by iterating all given BCs,
+ // including their subtrees.
+ static uint32_t CountSiteOrigins(
+ GlobalObject& aGlobal,
+ const Sequence<mozilla::OwningNonNull<BrowsingContext>>& aRoots);
+
+ // Return true if a private browsing session is active.
+ static bool IsPrivateBrowsingActive();
+
+ // This function would propogate the action to its all child browsing contexts
+ // in content processes.
+ void UpdateMediaControlAction(const MediaControlAction& aAction);
+
+ // Triggers a load in the process
+ using BrowsingContext::LoadURI;
+ void FixupAndLoadURIString(const nsAString& aURI,
+ const LoadURIOptions& aOptions,
+ ErrorResult& aError);
+ void LoadURI(nsIURI* aURI, const LoadURIOptions& aOptions,
+ ErrorResult& aError);
+
+ void GoBack(const Optional<int32_t>& aCancelContentJSEpoch,
+ bool aRequireUserInteraction, bool aUserActivation);
+ void GoForward(const Optional<int32_t>& aCancelContentJSEpoch,
+ bool aRequireUserInteraction, bool aUserActivation);
+ void GoToIndex(int32_t aIndex, const Optional<int32_t>& aCancelContentJSEpoch,
+ bool aUserActivation);
+ void Reload(uint32_t aReloadFlags);
+ void Stop(uint32_t aStopFlags);
+
+ // Get the publicly exposed current URI loaded in this BrowsingContext.
+ already_AddRefed<nsIURI> GetCurrentURI() const;
+ void SetCurrentRemoteURI(nsIURI* aCurrentRemoteURI);
+
+ BrowserParent* GetBrowserParent() const;
+ void SetCurrentBrowserParent(BrowserParent* aBrowserParent);
+
+ // Internal method to change which process a BrowsingContext is being loaded
+ // in. The returned promise will resolve when the process switch is completed.
+ //
+ // A NOT_REMOTE_TYPE aRemoteType argument will perform a process switch into
+ // the parent process, and the method will resolve with a null BrowserParent.
+ using RemotenessPromise = MozPromise<RefPtr<BrowserParent>, nsresult, false>;
+ RefPtr<RemotenessPromise> ChangeRemoteness(
+ const NavigationIsolationOptions& aOptions, uint64_t aPendingSwitchId);
+
+ // Return a media controller from the top-level browsing context that can
+ // control all media belonging to this browsing context tree. Return nullptr
+ // if the top-level browsing context has been discarded.
+ MediaController* GetMediaController();
+ bool HasCreatedMediaController() const;
+
+ // Attempts to start loading the given load state in this BrowsingContext,
+ // without requiring any communication from a docshell. This will handle
+ // computing the right process to load in, and organising handoff to
+ // the right docshell when we get a response.
+ bool LoadInParent(nsDocShellLoadState* aLoadState, bool aSetNavigating);
+
+ // Attempts to start loading the given load state in this BrowsingContext,
+ // in parallel with a DocumentChannelChild being created in the docshell.
+ // Requires the DocumentChannel to connect with this load for it to
+ // complete successfully.
+ bool AttemptSpeculativeLoadInParent(nsDocShellLoadState* aLoadState);
+
+ // Get or create a secure browser UI for this BrowsingContext
+ nsISecureBrowserUI* GetSecureBrowserUI();
+
+ BrowsingContextWebProgress* GetWebProgress() { return mWebProgress; }
+
+ // Called when the current URI changes (from an
+ // nsIWebProgressListener::OnLocationChange event, so that we
+ // can update our security UI for the new location, or when the
+ // mixed content/https-only state for our current window is changed.
+ void UpdateSecurityState();
+
+ void MaybeAddAsProgressListener(nsIWebProgress* aWebProgress);
+
+ // Called when a navigation forces us to recreate our browsing
+ // context (for example, when switching in or out of the parent
+ // process).
+ // aNewContext is the newly created BrowsingContext that is replacing
+ // us.
+ void ReplacedBy(CanonicalBrowsingContext* aNewContext,
+ const NavigationIsolationOptions& aRemotenessOptions);
+
+ bool HasHistoryEntry(nsISHEntry* aEntry);
+ bool HasLoadingHistoryEntry(nsISHEntry* aEntry) {
+ for (const LoadingSessionHistoryEntry& loading : mLoadingEntries) {
+ if (loading.mEntry == aEntry) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ void SwapHistoryEntries(nsISHEntry* aOldEntry, nsISHEntry* aNewEntry);
+
+ void AddLoadingSessionHistoryEntry(uint64_t aLoadId,
+ SessionHistoryEntry* aEntry);
+
+ void GetLoadingSessionHistoryInfoFromParent(
+ Maybe<LoadingSessionHistoryInfo>& aLoadingInfo);
+
+ void HistoryCommitIndexAndLength();
+
+ void SynchronizeLayoutHistoryState();
+
+ void ResetScalingZoom();
+
+ void SetContainerFeaturePolicy(FeaturePolicy* aContainerFeaturePolicy);
+ FeaturePolicy* GetContainerFeaturePolicy() const {
+ return mContainerFeaturePolicy;
+ }
+
+ void SetRestoreData(SessionStoreRestoreData* aData, ErrorResult& aError);
+ void ClearRestoreState();
+ MOZ_CAN_RUN_SCRIPT_BOUNDARY void RequestRestoreTabContent(
+ WindowGlobalParent* aWindow);
+ already_AddRefed<Promise> GetRestorePromise();
+
+ nsresult WriteSessionStorageToSessionStore(
+ const nsTArray<SSCacheCopy>& aSesssionStorage, uint32_t aEpoch);
+
+ void UpdateSessionStoreSessionStorage(const std::function<void()>& aDone);
+
+ static void UpdateSessionStoreForStorage(uint64_t aBrowsingContextId);
+
+ // Called when a BrowserParent for this BrowsingContext has been fully
+ // destroyed (i.e. `ActorDestroy` was called).
+ void BrowserParentDestroyed(BrowserParent* aBrowserParent,
+ bool aAbnormalShutdown);
+
+ void StartUnloadingHost(uint64_t aChildID);
+ void ClearUnloadingHost(uint64_t aChildID);
+
+ bool AllowedInBFCache(const Maybe<uint64_t>& aChannelId, nsIURI* aNewURI);
+
+ // Methods for getting and setting the active state for top level
+ // browsing contexts, for the process priority manager.
+ bool IsPriorityActive() const {
+ MOZ_RELEASE_ASSERT(IsTop());
+ return mPriorityActive;
+ }
+ void SetPriorityActive(bool aIsActive) {
+ MOZ_RELEASE_ASSERT(IsTop());
+ mPriorityActive = aIsActive;
+ }
+
+ void SetTouchEventsOverride(dom::TouchEventsOverride, ErrorResult& aRv);
+ void SetTargetTopLevelLinkClicksToBlank(bool aTargetTopLevelLinkClicksToBlank,
+ ErrorResult& aRv);
+
+ bool IsReplaced() const { return mIsReplaced; }
+
+ const JS::Heap<JS::Value>& PermanentKey() { return mPermanentKey; }
+ void ClearPermanentKey() { mPermanentKey.setNull(); }
+ void MaybeSetPermanentKey(Element* aEmbedder);
+
+ // When request for page awake, it would increase a count that is used to
+ // prevent whole browsing context tree from being suspended. The request can
+ // be called multiple times. When calling the revoke, it would decrease the
+ // count and once the count reaches to zero, the browsing context tree could
+ // be suspended when the tree is inactive.
+ void AddPageAwakeRequest();
+ void RemovePageAwakeRequest();
+
+ void CloneDocumentTreeInto(CanonicalBrowsingContext* aSource,
+ const nsACString& aRemoteType,
+ embedding::PrintData&& aPrintData);
+
+ // Returns a Promise which resolves when cloning documents for printing
+ // finished if this browsing context is cloning document tree.
+ RefPtr<GenericNonExclusivePromise> GetClonePromise() const {
+ return mClonePromise;
+ }
+
+ bool StartApzAutoscroll(float aAnchorX, float aAnchorY, nsViewID aScrollId,
+ uint32_t aPresShellId);
+ void StopApzAutoscroll(nsViewID aScrollId, uint32_t aPresShellId);
+
+ void AddFinalDiscardListener(std::function<void(uint64_t)>&& aListener);
+
+ bool ForceAppWindowActive() const { return mForceAppWindowActive; }
+ void SetForceAppWindowActive(bool, ErrorResult&);
+ void RecomputeAppWindowVisibility();
+
+ already_AddRefed<nsISHEntry> GetMostRecentLoadingSessionHistoryEntry();
+
+ protected:
+ // Called when the browsing context is being discarded.
+ void CanonicalDiscard();
+
+ // Called when the browsing context is being attached.
+ void CanonicalAttach();
+
+ // Called when the browsing context private mode is changed after
+ // being attached, but before being discarded.
+ void AdjustPrivateBrowsingCount(bool aPrivateBrowsing);
+
+ using Type = BrowsingContext::Type;
+ CanonicalBrowsingContext(WindowContext* aParentWindow,
+ BrowsingContextGroup* aGroup,
+ uint64_t aBrowsingContextId,
+ uint64_t aOwnerProcessId,
+ uint64_t aEmbedderProcessId, Type aType,
+ FieldValues&& aInit);
+
+ private:
+ friend class BrowsingContext;
+
+ virtual ~CanonicalBrowsingContext();
+
+ class PendingRemotenessChange {
+ public:
+ NS_INLINE_DECL_REFCOUNTING(PendingRemotenessChange)
+
+ PendingRemotenessChange(CanonicalBrowsingContext* aTarget,
+ RemotenessPromise::Private* aPromise,
+ uint64_t aPendingSwitchId,
+ const NavigationIsolationOptions& aOptions);
+
+ void Cancel(nsresult aRv);
+
+ private:
+ friend class CanonicalBrowsingContext;
+
+ ~PendingRemotenessChange();
+ void ProcessLaunched();
+ void ProcessReady();
+ void MaybeFinish();
+ void Clear();
+
+ nsresult FinishTopContent();
+ nsresult FinishSubframe();
+
+ RefPtr<CanonicalBrowsingContext> mTarget;
+ RefPtr<RemotenessPromise::Private> mPromise;
+ RefPtr<ContentParent> mContentParent;
+ RefPtr<BrowsingContextGroup> mSpecificGroup;
+
+ bool mProcessReady = false;
+ bool mWaitingForPrepareToChange = false;
+
+ uint64_t mPendingSwitchId;
+ NavigationIsolationOptions mOptions;
+ };
+
+ struct RestoreState {
+ NS_INLINE_DECL_REFCOUNTING(RestoreState)
+
+ void ClearData() { mData = nullptr; }
+ void Resolve();
+
+ RefPtr<SessionStoreRestoreData> mData;
+ RefPtr<Promise> mPromise;
+ uint32_t mRequests = 0;
+ uint32_t mResolves = 0;
+
+ private:
+ ~RestoreState() = default;
+ };
+
+ friend class net::DocumentLoadListener;
+ // Called when a DocumentLoadListener is created to start a load for
+ // this browsing context. Returns false if a higher priority load is
+ // already in-progress and the new one has been rejected.
+ bool StartDocumentLoad(net::DocumentLoadListener* aLoad);
+ // Called once DocumentLoadListener completes handling a load, and it
+ // is either complete, or handed off to the final channel to deliver
+ // data to the destination docshell.
+ // If aContinueNavigating it set, the reference to the DocumentLoadListener
+ // will be cleared to prevent it being cancelled, however the current load ID
+ // will be preserved until `EndDocumentLoad` is called again.
+ void EndDocumentLoad(bool aContinueNavigating);
+
+ bool SupportsLoadingInParent(nsDocShellLoadState* aLoadState,
+ uint64_t* aOuterWindowId);
+
+ void HistoryCommitIndexAndLength(
+ const nsID& aChangeID,
+ const CallerWillNotifyHistoryIndexAndLengthChanges& aProofOfCaller);
+
+ struct UnloadingHost {
+ uint64_t mChildID;
+ nsTArray<std::function<void()>> mCallbacks;
+ };
+ nsTArray<UnloadingHost>::iterator FindUnloadingHost(uint64_t aChildID);
+
+ // Called when we want to show the subframe crashed UI as our previous browser
+ // has become unloaded for one reason or another.
+ void ShowSubframeCrashedUI(BrowserBridgeParent* aBridge);
+
+ void MaybeScheduleSessionStoreUpdate();
+
+ void CancelSessionStoreUpdate();
+
+ void AddPendingDiscard();
+
+ void RemovePendingDiscard();
+
+ bool ShouldAddEntryForRefresh(const SessionHistoryEntry* aEntry) {
+ return ShouldAddEntryForRefresh(aEntry->Info().GetURI(),
+ aEntry->Info().HasPostData());
+ }
+ bool ShouldAddEntryForRefresh(nsIURI* aNewURI, bool aHasPostData) {
+ nsCOMPtr<nsIURI> currentURI = GetCurrentURI();
+ return BrowsingContext::ShouldAddEntryForRefresh(currentURI, aNewURI,
+ aHasPostData);
+ }
+
+ already_AddRefed<nsDocShellLoadState> CreateLoadInfo(
+ SessionHistoryEntry* aEntry);
+
+ // XXX(farre): Store a ContentParent pointer here rather than mProcessId?
+ // Indicates which process owns the docshell.
+ uint64_t mProcessId;
+
+ // Indicates which process owns the embedder element.
+ uint64_t mEmbedderProcessId;
+
+ uint64_t mCrossGroupOpenerId = 0;
+
+ // This function will make the top window context reset its
+ // "SHEntryHasUserInteraction" cache that prevents documents from repeatedly
+ // setting user interaction on SH entries. Should be called anytime SH
+ // entries are added or replaced.
+ void ResetSHEntryHasUserInteractionCache();
+
+ RefPtr<BrowserParent> mCurrentBrowserParent;
+
+ nsTArray<UnloadingHost> mUnloadingHosts;
+
+ // The current URI loaded in this BrowsingContext. This value is only set for
+ // BrowsingContexts loaded in content processes.
+ nsCOMPtr<nsIURI> mCurrentRemoteURI;
+
+ // The current remoteness change which is in a pending state.
+ RefPtr<PendingRemotenessChange> mPendingRemotenessChange;
+
+ RefPtr<nsSHistory> mSessionHistory;
+
+ // Tab media controller is used to control all media existing in the same
+ // browsing context tree, so it would only exist in the top level browsing
+ // context.
+ RefPtr<MediaController> mTabMediaController;
+
+ RefPtr<net::DocumentLoadListener> mCurrentLoad;
+
+ struct LoadingSessionHistoryEntry {
+ uint64_t mLoadId = 0;
+ RefPtr<SessionHistoryEntry> mEntry;
+ };
+ nsTArray<LoadingSessionHistoryEntry> mLoadingEntries;
+ RefPtr<SessionHistoryEntry> mActiveEntry;
+
+ RefPtr<nsSecureBrowserUI> mSecureBrowserUI;
+ RefPtr<BrowsingContextWebProgress> mWebProgress;
+
+ nsCOMPtr<nsIWebProgressListener> mDocShellProgressBridge;
+ RefPtr<nsBrowserStatusFilter> mStatusFilter;
+
+ RefPtr<FeaturePolicy> mContainerFeaturePolicy;
+
+ friend class BrowserSessionStore;
+ WeakPtr<SessionStoreFormData>& GetSessionStoreFormDataRef() {
+ return mFormdata;
+ }
+ WeakPtr<SessionStoreScrollData>& GetSessionStoreScrollDataRef() {
+ return mScroll;
+ }
+
+ WeakPtr<SessionStoreFormData> mFormdata;
+ WeakPtr<SessionStoreScrollData> mScroll;
+
+ RefPtr<RestoreState> mRestoreState;
+
+ nsCOMPtr<nsITimer> mSessionStoreSessionStorageUpdateTimer;
+
+ // If this is a top level context, this is true if our browser ID is marked as
+ // active in the process priority manager.
+ bool mPriorityActive = false;
+
+ // See CanonicalBrowsingContext.forceAppWindowActive.
+ bool mForceAppWindowActive = false;
+
+ bool mIsReplaced = false;
+
+ // A Promise created when cloning documents for printing.
+ RefPtr<GenericNonExclusivePromise> mClonePromise;
+
+ JS::Heap<JS::Value> mPermanentKey;
+
+ uint32_t mPendingDiscards = 0;
+
+ bool mFullyDiscarded = false;
+
+ nsTArray<std::function<void(uint64_t)>> mFullyDiscardedListeners;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // !defined(mozilla_dom_CanonicalBrowsingContext_h)