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gecko-dev/dom/base/Document.h

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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_Document_h___
#define mozilla_dom_Document_h___
#include <bitset>
#include <cstddef>
#include <cstdint>
#include <new>
#include <utility>
#include "ErrorList.h"
#include "MainThreadUtils.h"
#include "ReferrerInfo.h"
#include "Units.h"
#include "imgIRequest.h"
#include "js/RootingAPI.h"
#include "js/friend/DOMProxy.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/BasicEvents.h"
#include "mozilla/BitSet.h"
#include "mozilla/CORSMode.h"
#include "mozilla/CallState.h"
#include "mozilla/EventStates.h"
#include "mozilla/FlushType.h"
#include "mozilla/FunctionRef.h"
#include "mozilla/HashTable.h"
#include "mozilla/LinkedList.h"
#include "mozilla/Maybe.h"
#include "mozilla/MozPromise.h"
#include "mozilla/NotNull.h"
#include "mozilla/PointerLockManager.h"
#include "mozilla/PreloadService.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Result.h"
#include "mozilla/SegmentedVector.h"
#include "mozilla/TaskCategory.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/UseCounter.h"
#include "mozilla/WeakPtr.h"
#include "mozilla/css/StylePreloadKind.h"
#include "mozilla/dom/DispatcherTrait.h"
#include "mozilla/dom/DocumentOrShadowRoot.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/ViewportMetaData.h"
#include "nsAtom.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsClassHashtable.h"
#include "nsCompatibility.h"
#include "nsContentListDeclarations.h"
#include "nsCycleCollectionParticipant.h"
#include "nsTHashMap.h"
#include "nsDebug.h"
#include "nsExpirationTracker.h"
#include "nsGkAtoms.h"
#include "nsHashKeys.h"
#include "nsIChannel.h"
#include "nsIChannelEventSink.h"
#include "nsIContentViewer.h"
#include "nsID.h"
#include "nsIInterfaceRequestor.h"
#include "nsILoadContext.h"
#include "nsILoadGroup.h"
#include "nsILoadInfo.h"
#include "nsINode.h"
#include "nsIObserver.h"
#include "nsIParser.h"
#include "nsIPrincipal.h"
#include "nsIProgressEventSink.h"
#include "nsIRadioGroupContainer.h"
#include "nsIReferrerInfo.h"
#include "nsIRequestObserver.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsIStreamListener.h"
#include "nsISupports.h"
#include "nsISupportsUtils.h"
#include "nsIURI.h"
#include "nsIWeakReferenceUtils.h"
#include "nsLiteralString.h"
#include "nsPIDOMWindow.h"
#include "nsPropertyTable.h"
#include "nsRefPtrHashtable.h"
#include "nsString.h"
#include "nsTArray.h"
#include "nsTHashSet.h"
#include "nsTLiteralString.h"
#include "nsTObserverArray.h"
#include "nsThreadUtils.h"
#include "nsURIHashKey.h"
#include "nsViewportInfo.h"
#include "nsWeakReference.h"
#include "nsWindowSizes.h"
#include "nsXULElement.h"
#include "nscore.h"
// XXX We need to include this here to ensure that DefaultDeleter for Servo
// types is specialized before the template is instantiated. Probably, this
// should be included at some other place already that's generated by cbindgen.
#include "mozilla/ServoBindingTypes.h"
// windows.h #defines CreateEvent
#ifdef CreateEvent
# undef CreateEvent
#endif
#ifdef MOZILLA_INTERNAL_API
# include "mozilla/dom/DocumentBinding.h"
#else
namespace mozilla {
namespace dom {
class ElementCreationOptionsOrString;
} // namespace dom
} // namespace mozilla
#endif // MOZILLA_INTERNAL_API
class InfallibleAllocPolicy;
class JSObject;
class JSTracer;
class PLDHashTable;
class gfxUserFontSet;
class mozIDOMWindowProxy;
class nsCachableElementsByNameNodeList;
class nsCommandManager;
class nsContentList;
class nsCycleCollectionTraversalCallback;
class nsDOMCaretPosition;
class nsDOMNavigationTiming;
class nsDocShell;
class nsFrameLoader;
class nsFrameLoaderOwner;
class nsGenericHTMLElement;
class nsGlobalWindowInner;
class nsHTMLCSSStyleSheet;
class nsHTMLDocument;
class nsHTMLStyleSheet;
class nsHtml5TreeOpExecutor;
class nsIAppWindow;
class nsIAsyncVerifyRedirectCallback;
class nsIBFCacheEntry;
class nsIContent;
class nsIContentSecurityPolicy;
class nsIContentSink;
class nsICookieJarSettings;
class nsIDOMXULCommandDispatcher;
class nsIDocShell;
class nsIDocShellTreeItem;
class nsIDocumentEncoder;
class nsIDocumentObserver;
class nsIEventTarget;
class nsIFrame;
class nsIGlobalObject;
class nsIHTMLCollection;
class nsIInputStream;
class nsILayoutHistoryState;
class nsIObjectLoadingContent;
class nsIPermissionDelegateHandler;
class nsIRadioVisitor;
class nsIRequest;
class nsIRunnable;
class nsIScriptGlobalObject;
class nsISecurityConsoleMessage;
class nsISerialEventTarget;
class nsIStructuredCloneContainer;
class nsIVariant;
class nsNodeInfoManager;
class nsPIWindowRoot;
class nsPresContext;
class nsRange;
class nsSimpleContentList;
class nsTextNode;
class nsViewManager;
class nsXULPrototypeDocument;
struct JSContext;
struct RawServoSelectorList;
struct StyleUseCounters;
struct nsFont;
namespace mozilla {
class AbstractThread;
class StyleSheet;
class EditorCommand;
class Encoding;
class ErrorResult;
class EventListenerManager;
class FullscreenExit;
class FullscreenRequest;
class HTMLEditor;
struct LangGroupFontPrefs;
class PendingAnimationTracker;
class PermissionDelegateHandler;
class PresShell;
class ServoStyleSet;
enum class StyleOrigin : uint8_t;
class SMILAnimationController;
enum class StyleCursorKind : uint8_t;
enum class StylePrefersColorScheme : uint8_t;
enum class StyleRuleChangeKind : uint32_t;
class TextEditor;
template <typename>
class OwningNonNull;
struct URLExtraData;
namespace css {
class Loader;
class ImageLoader;
class Rule;
} // namespace css
namespace dom {
class AnonymousContent;
class Attr;
class XULBroadcastManager;
class XULPersist;
class ChromeObserver;
class ClientInfo;
class ClientState;
class CDATASection;
class Comment;
class CSSImportRule;
class DocumentL10n;
class DocumentFragment;
class DocumentTimeline;
class DocumentType;
class DOMImplementation;
class DOMIntersectionObserver;
class DOMStringList;
class Event;
class EventListener;
struct FailedCertSecurityInfo;
class FeaturePolicy;
class FontFaceSet;
class FrameRequestCallback;
class ImageTracker;
class HTMLAllCollection;
class HTMLBodyElement;
class HTMLInputElement;
class HTMLMetaElement;
class HTMLDialogElement;
class HTMLSharedElement;
class HTMLImageElement;
struct LifecycleCallbackArgs;
class Link;
class Location;
class MediaQueryList;
struct NetErrorInfo;
class NodeFilter;
class NodeInfo;
class NodeIterator;
enum class OrientationType : uint8_t;
class ProcessingInstruction;
class Promise;
class ScriptLoader;
class Selection;
class ServiceWorkerDescriptor;
class ShadowRoot;
class SVGDocument;
class SVGElement;
class SVGSVGElement;
class SVGUseElement;
class Touch;
class TouchList;
class TreeWalker;
enum class ViewportFitType : uint8_t;
class WindowContext;
class WindowGlobalChild;
class WindowProxyHolder;
class XPathEvaluator;
class XPathExpression;
class XPathNSResolver;
class XPathResult;
class BrowsingContext;
class nsDocumentOnStack;
class nsUnblockOnloadEvent;
template <typename, typename>
class CallbackObjectHolder;
enum class CallerType : uint32_t;
enum BFCacheStatus {
NOT_ALLOWED = 1 << 0, // Status 0
EVENT_HANDLING_SUPPRESSED = 1 << 1, // Status 1
SUSPENDED = 1 << 2, // Status 2
UNLOAD_LISTENER = 1 << 3, // Status 3
REQUEST = 1 << 4, // Status 4
ACTIVE_GET_USER_MEDIA = 1 << 5, // Status 5
ACTIVE_PEER_CONNECTION = 1 << 6, // Status 6
CONTAINS_EME_CONTENT = 1 << 7, // Status 7
CONTAINS_MSE_CONTENT = 1 << 8, // Status 8
HAS_ACTIVE_SPEECH_SYNTHESIS = 1 << 9, // Status 9
HAS_USED_VR = 1 << 10, // Status 10
CONTAINS_REMOTE_SUBFRAMES = 1 << 11, // Status 11
NOT_ONLY_TOPLEVEL_IN_BCG = 1 << 12, // Status 12
ABOUT_PAGE = 1 << 13, // Status 13
};
} // namespace dom
} // namespace mozilla
namespace mozilla {
namespace net {
class ChannelEventQueue;
} // namespace net
} // namespace mozilla
// Must be kept in sync with xpcom/rust/xpcom/src/interfaces/nonidl.rs
#define NS_IDOCUMENT_IID \
{ \
0xce1f7627, 0x7109, 0x4977, { \
0xba, 0x77, 0x49, 0x0f, 0xfd, 0xe0, 0x7a, 0xaa \
} \
}
namespace mozilla {
namespace dom {
class Document;
class DOMStyleSheetSetList;
class ResizeObserver;
class ResizeObserverController;
class PostMessageEvent;
#define DEPRECATED_OPERATION(_op) e##_op,
enum class DeprecatedOperations : uint16_t {
#include "nsDeprecatedOperationList.h"
eDeprecatedOperationCount
};
#undef DEPRECATED_OPERATION
// Document states
// RTL locale: specific to the XUL localedir attribute
#define NS_DOCUMENT_STATE_RTL_LOCALE NS_DEFINE_EVENT_STATE_MACRO(0)
// Window activation status
#define NS_DOCUMENT_STATE_WINDOW_INACTIVE NS_DEFINE_EVENT_STATE_MACRO(1)
class DocHeaderData {
public:
DocHeaderData(nsAtom* aField, const nsAString& aData)
: mField(aField), mData(aData), mNext(nullptr) {}
~DocHeaderData(void) { delete mNext; }
RefPtr<nsAtom> mField;
nsString mData;
DocHeaderData* mNext;
};
class ExternalResourceMap {
using SubDocEnumFunc = FunctionRef<CallState(Document&)>;
public:
/**
* A class that represents an external resource load that has begun but
* doesn't have a document yet. Observers can be registered on this object,
* and will be notified after the document is created. Observers registered
* after the document has been created will NOT be notified. When observers
* are notified, the subject will be the newly-created document, the topic
* will be "external-resource-document-created", and the data will be null.
* If document creation fails for some reason, observers will still be
* notified, with a null document pointer.
*/
class ExternalResourceLoad : public nsISupports {
public:
virtual ~ExternalResourceLoad() = default;
void AddObserver(nsIObserver* aObserver) {
MOZ_ASSERT(aObserver, "Must have observer");
mObservers.AppendElement(aObserver);
}
const nsTArray<nsCOMPtr<nsIObserver>>& Observers() { return mObservers; }
protected:
AutoTArray<nsCOMPtr<nsIObserver>, 8> mObservers;
};
ExternalResourceMap();
/**
* Request an external resource document. This does exactly what
* Document::RequestExternalResource is documented to do.
*/
Document* RequestResource(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo,
nsINode* aRequestingNode,
Document* aDisplayDocument,
ExternalResourceLoad** aPendingLoad);
/**
* Enumerate the resource documents. See
* Document::EnumerateExternalResources.
*/
void EnumerateResources(SubDocEnumFunc aCallback);
/**
* Traverse ourselves for cycle-collection
*/
void Traverse(nsCycleCollectionTraversalCallback* aCallback) const;
/**
* Shut ourselves down (used for cycle-collection unlink), as well
* as for document destruction.
*/
void Shutdown() {
mPendingLoads.Clear();
mMap.Clear();
mHaveShutDown = true;
}
bool HaveShutDown() const { return mHaveShutDown; }
// Needs to be public so we can traverse them sanely
struct ExternalResource {
~ExternalResource();
RefPtr<Document> mDocument;
nsCOMPtr<nsIContentViewer> mViewer;
nsCOMPtr<nsILoadGroup> mLoadGroup;
};
// Hide all our viewers
void HideViewers();
// Show all our viewers
void ShowViewers();
protected:
class PendingLoad : public ExternalResourceLoad, public nsIStreamListener {
~PendingLoad() = default;
public:
explicit PendingLoad(Document* aDisplayDocument)
: mDisplayDocument(aDisplayDocument) {}
NS_DECL_ISUPPORTS
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIREQUESTOBSERVER
/**
* Start aURI loading. This will perform the necessary security checks and
* so forth.
*/
nsresult StartLoad(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo,
nsINode* aRequestingNode);
/**
* Set up an nsIContentViewer based on aRequest. This is guaranteed to
* put null in *aViewer and *aLoadGroup on all failures.
*/
nsresult SetupViewer(nsIRequest* aRequest, nsIContentViewer** aViewer,
nsILoadGroup** aLoadGroup);
private:
RefPtr<Document> mDisplayDocument;
nsCOMPtr<nsIStreamListener> mTargetListener;
nsCOMPtr<nsIURI> mURI;
};
friend class PendingLoad;
class LoadgroupCallbacks final : public nsIInterfaceRequestor {
~LoadgroupCallbacks() = default;
public:
explicit LoadgroupCallbacks(nsIInterfaceRequestor* aOtherCallbacks)
: mCallbacks(aOtherCallbacks) {}
NS_DECL_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
private:
// The only reason it's safe to hold a strong ref here without leaking is
// that the notificationCallbacks on a loadgroup aren't the docshell itself
// but a shim that holds a weak reference to the docshell.
nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
// Use shims for interfaces that docshell implements directly so that we
// don't hand out references to the docshell. The shims should all allow
// getInterface back on us, but other than that each one should only
// implement one interface.
// XXXbz I wish we could just derive the _allcaps thing from _i
#define DECL_SHIM(_i, _allcaps) \
class _i##Shim final : public nsIInterfaceRequestor, public _i { \
~_i##Shim() {} \
\
public: \
_i##Shim(nsIInterfaceRequestor* aIfreq, _i* aRealPtr) \
: mIfReq(aIfreq), mRealPtr(aRealPtr) { \
NS_ASSERTION(mIfReq, "Expected non-null here"); \
NS_ASSERTION(mRealPtr, "Expected non-null here"); \
} \
NS_DECL_ISUPPORTS \
NS_FORWARD_NSIINTERFACEREQUESTOR(mIfReq->) \
NS_FORWARD_##_allcaps(mRealPtr->) private \
: nsCOMPtr<nsIInterfaceRequestor> mIfReq; \
nsCOMPtr<_i> mRealPtr; \
};
DECL_SHIM(nsILoadContext, NSILOADCONTEXT)
DECL_SHIM(nsIProgressEventSink, NSIPROGRESSEVENTSINK)
DECL_SHIM(nsIChannelEventSink, NSICHANNELEVENTSINK)
#undef DECL_SHIM
};
/**
* Add an ExternalResource for aURI. aViewer and aLoadGroup might be null
* when this is called if the URI didn't result in an XML document. This
* function makes sure to remove the pending load for aURI, if any, from our
* hashtable, and to notify its observers, if any.
*/
nsresult AddExternalResource(nsIURI* aURI, nsIContentViewer* aViewer,
nsILoadGroup* aLoadGroup,
Document* aDisplayDocument);
nsClassHashtable<nsURIHashKey, ExternalResource> mMap;
nsRefPtrHashtable<nsURIHashKey, PendingLoad> mPendingLoads;
bool mHaveShutDown;
};
// The current status for a preload.
enum class SheetPreloadStatus : uint8_t {
// There's no need to preload anything, the sheet is already in-memory.
AlreadyComplete,
// The load is in-progress. There's no guarantee that a load was started, it
// could be coalesced with other redundant loads.
InProgress,
// Something went wrong, and we errored out.
Errored,
};
//----------------------------------------------------------------------
// Document interface. This is implemented by all document objects in
// Gecko.
class Document : public nsINode,
public DocumentOrShadowRoot,
public nsSupportsWeakReference,
public nsIRadioGroupContainer,
public nsIScriptObjectPrincipal,
public DispatcherTrait,
public SupportsWeakPtr {
friend class DocumentOrShadowRoot;
protected:
explicit Document(const char* aContentType);
virtual ~Document();
Document(const Document&) = delete;
Document& operator=(const Document&) = delete;
public:
typedef dom::ExternalResourceMap::ExternalResourceLoad ExternalResourceLoad;
typedef dom::ReferrerPolicy ReferrerPolicyEnum;
using AdoptedStyleSheetCloneCache =
nsRefPtrHashtable<nsPtrHashKey<const StyleSheet>, StyleSheet>;
// nsINode overrides the new operator for DOM Arena allocation.
// to use the default one, we need to bring it back again
void* operator new(size_t aSize) { return ::operator new(aSize); }
/**
* Called when XPCOM shutdown.
*/
static void Shutdown();
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDOCUMENT_IID)
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_ADDSIZEOFEXCLUDINGTHIS
NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_AMBIGUOUS(Document,
nsINode)
#define NS_DOCUMENT_NOTIFY_OBSERVERS(func_, params_) \
do { \
NS_OBSERVER_ARRAY_NOTIFY_XPCOM_OBSERVERS(mObservers, func_, params_); \
/* FIXME(emilio): Apparently we can keep observing from the BFCache? That \
looks bogus. */ \
if (PresShell* presShell = GetObservingPresShell()) { \
presShell->func_ params_; \
} \
} while (0)
// nsIRadioGroupContainer
NS_IMETHOD WalkRadioGroup(const nsAString& aName,
nsIRadioVisitor* aVisitor) final {
return DocumentOrShadowRoot::WalkRadioGroup(aName, aVisitor);
}
void SetCurrentRadioButton(const nsAString& aName,
HTMLInputElement* aRadio) final {
DocumentOrShadowRoot::SetCurrentRadioButton(aName, aRadio);
}
HTMLInputElement* GetCurrentRadioButton(const nsAString& aName) final {
return DocumentOrShadowRoot::GetCurrentRadioButton(aName);
}
NS_IMETHOD
GetNextRadioButton(const nsAString& aName, const bool aPrevious,
HTMLInputElement* aFocusedRadio,
HTMLInputElement** aRadioOut) final {
return DocumentOrShadowRoot::GetNextRadioButton(aName, aPrevious,
aFocusedRadio, aRadioOut);
}
void AddToRadioGroup(const nsAString& aName, HTMLInputElement* aRadio) final {
DocumentOrShadowRoot::AddToRadioGroup(aName, aRadio);
}
void RemoveFromRadioGroup(const nsAString& aName,
HTMLInputElement* aRadio) final {
DocumentOrShadowRoot::RemoveFromRadioGroup(aName, aRadio);
}
uint32_t GetRequiredRadioCount(const nsAString& aName) const final {
return DocumentOrShadowRoot::GetRequiredRadioCount(aName);
}
void RadioRequiredWillChange(const nsAString& aName,
bool aRequiredAdded) final {
DocumentOrShadowRoot::RadioRequiredWillChange(aName, aRequiredAdded);
}
bool GetValueMissingState(const nsAString& aName) const final {
return DocumentOrShadowRoot::GetValueMissingState(aName);
}
void SetValueMissingState(const nsAString& aName, bool aValue) final {
return DocumentOrShadowRoot::SetValueMissingState(aName, aValue);
}
nsIPrincipal* EffectiveStoragePrincipal() const;
// nsIScriptObjectPrincipal
nsIPrincipal* GetPrincipal() final { return NodePrincipal(); }
nsIPrincipal* GetEffectiveStoragePrincipal() final {
return EffectiveStoragePrincipal();
}
// You should probably not be using this function, since it performs no checks
// to ensure that the partitioned principal should really be used here. It is
// only designed to be used in very specific circumstances, such as when
// inheriting the document/storage principal.
nsIPrincipal* PartitionedPrincipal() final { return mPartitionedPrincipal; }
// Gets the appropriate principal to check the URI against a blocklist /
// allowlist.
nsIPrincipal* GetPrincipalForPrefBasedHacks() const;
void ClearActiveStoragePrincipal() { mActiveStoragePrincipal = nullptr; }
// EventTarget
void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
EventListenerManager* GetOrCreateListenerManager() override;
EventListenerManager* GetExistingListenerManager() const override;
// This helper class must be set when we dispatch beforeunload and unload
// events in order to avoid unterminate sync XHRs.
class MOZ_RAII PageUnloadingEventTimeStamp {
RefPtr<Document> mDocument;
bool mSet;
public:
explicit PageUnloadingEventTimeStamp(Document* aDocument)
: mDocument(aDocument), mSet(false) {
MOZ_ASSERT(aDocument);
if (mDocument->mPageUnloadingEventTimeStamp.IsNull()) {
mDocument->SetPageUnloadingEventTimeStamp();
mSet = true;
}
}
~PageUnloadingEventTimeStamp() {
if (mSet) {
mDocument->CleanUnloadEventsTimeStamp();
}
}
};
/**
* Let the document know that we're starting to load data into it.
* @param aCommand The parser command. Must not be null.
* XXXbz It's odd to have that here.
* @param aChannel The channel the data will come from. The channel must be
* able to report its Content-Type.
* @param aLoadGroup The loadgroup this document should use from now on.
* Note that the document might not be the only thing using
* this loadgroup.
* @param aContainer The container this document is in. This may be null.
* XXXbz maybe we should make it more explicit (eg make the
* container an nsIWebNavigation or nsIDocShell or
* something)?
* @param [out] aDocListener the listener to pump data from the channel into.
* Generally this will be the parser this document
* sets up, or some sort of data-handler for media
* documents.
* @param aReset whether the document should call Reset() on itself. If this
* is false, the document will NOT set its principal to the
* channel's owner, will not clear any event listeners that are
* already set on it, etc.
* @param aSink The content sink to use for the data. If this is null and
* the document needs a content sink, it will create one based
* on whatever it knows about the data it's going to load.
* This MUST be null if the underlying document is an HTML
* document. Even in the XML case, please don't add new calls
* with non-null sink.
*
* Once this has been called, the document will return false for
* MayStartLayout() until SetMayStartLayout(true) is called on it. Making
* sure this happens is the responsibility of the caller of
* StartDocumentLoad().
*
* This function has an implementation, and does some setup, but does NOT set
* *aDocListener; this is the job of subclasses.
*/
virtual nsresult StartDocumentLoad(const char* aCommand, nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset,
nsIContentSink* aSink = nullptr) = 0;
void StopDocumentLoad();
virtual void SetSuppressParserErrorElement(bool aSuppress) {}
virtual bool SuppressParserErrorElement() { return false; }
virtual void SetSuppressParserErrorConsoleMessages(bool aSuppress) {}
virtual bool SuppressParserErrorConsoleMessages() { return false; }
// nsINode
bool IsNodeOfType(uint32_t aFlags) const final;
nsresult InsertChildBefore(nsIContent* aKid, nsIContent* aBeforeThis,
bool aNotify) override;
void RemoveChildNode(nsIContent* aKid, bool aNotify) final;
nsresult Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const override {
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult CloneDocHelper(Document* clone) const;
Document* GetLatestStaticClone() const { return mLatestStaticClone; }
/**
* Signal that the document title may have changed
* (see Document::GetTitle).
* @param aBoundTitleElement true if an HTML or SVG <title> element
* has just been bound to the document.
*/
virtual void NotifyPossibleTitleChange(bool aBoundTitleElement);
/**
* Return the URI for the document. May return null. If it ever stops being
* able to return null, we can make sure nsINode::GetBaseURI/GetBaseURIObject
* also never return null.
*
* The value returned corresponds to the "document's address" in
* HTML5. As such, it may change over the lifetime of the document, for
* instance as a result of the user navigating to a fragment identifier on
* the page, or as a result to a call to pushState() or replaceState().
*
* https://html.spec.whatwg.org/multipage/dom.html#the-document%27s-address
*/
nsIURI* GetDocumentURI() const { return mDocumentURI; }
/**
* Return the original URI of the document. This is the same as the
* document's URI unless that has changed from its original value (for
* example, due to history.pushState() or replaceState() being invoked on the
* document).
*
* This method corresponds to the "creation URL" in HTML5 and, once set,
* doesn't change over the lifetime of the document.
*
* https://html.spec.whatwg.org/multipage/webappapis.html#creation-url
*/
nsIURI* GetOriginalURI() const { return mOriginalURI; }
/**
* Return the base domain of the document. This has been computed using
* mozIThirdPartyUtil::GetBaseDomain() and can be used for third-party
* checks. When the URI of the document changes, this value is recomputed.
*/
nsCString GetBaseDomain() const { return mBaseDomain; }
/**
* Set the URI for the document. This also sets the document's original URI,
* if it's null.
*/
void SetDocumentURI(nsIURI* aURI);
/**
* Set the URI for the document loaded via XHR, when accessed from
* chrome privileged script.
*/
void SetChromeXHRDocURI(nsIURI* aURI) { mChromeXHRDocURI = aURI; }
/**
* Set the base URI for the document loaded via XHR, when accessed from
* chrome privileged script.
*/
void SetChromeXHRDocBaseURI(nsIURI* aURI) { mChromeXHRDocBaseURI = aURI; }
/**
* The CSP in general is stored in the ClientInfo, but we also cache
* the CSP on the document so subresources loaded within a document
* can query that cached CSP instead of having to deserialize the CSP
* from the Client.
*
* Please note that at the time of CSP parsing the Client is not
* available yet, hence we sync CSP of document and Client when the
* Client becomes available within nsGlobalWindowInner::EnsureClientSource().
*/
nsIContentSecurityPolicy* GetCsp() const;
void SetCsp(nsIContentSecurityPolicy* aCSP);
nsIContentSecurityPolicy* GetPreloadCsp() const;
void SetPreloadCsp(nsIContentSecurityPolicy* aPreloadCSP);
void GetCspJSON(nsString& aJSON);
/**
* Set referrer policy and upgrade-insecure-requests flags
*/
void ApplySettingsFromCSP(bool aSpeculative);
already_AddRefed<nsIParser> CreatorParserOrNull() {
nsCOMPtr<nsIParser> parser = mParser;
return parser.forget();
}
/**
* ReferrerInfo getter for Document.webidl.
*/
nsIReferrerInfo* ReferrerInfo() const { return GetReferrerInfo(); }
nsIReferrerInfo* GetReferrerInfo() const { return mReferrerInfo; }
nsIReferrerInfo* GetPreloadReferrerInfo() const {
return mPreloadReferrerInfo;
}
/**
* Return the referrer policy of the document. Return "default" if there's no
* valid meta referrer tag found in the document.
* Referrer policy should be inherited from parent if the iframe is srcdoc
*/
ReferrerPolicyEnum GetReferrerPolicy() const;
/**
* GetReferrerPolicy() for Document.webidl.
*/
ReferrerPolicyEnum ReferrerPolicy() const { return GetReferrerPolicy(); }
/**
* If true, this flag indicates that all mixed content subresource
* loads for this document (and also embeded browsing contexts) will
* be blocked.
*/
bool GetBlockAllMixedContent(bool aPreload) const {
if (aPreload) {
return mBlockAllMixedContentPreloads;
}
return mBlockAllMixedContent;
}
/**
* If true, this flag indicates that all subresource loads for this
* document need to be upgraded from http to https.
* This flag becomes true if the CSP of the document itself, or any
* of the document's ancestors up to the toplevel document makes use
* of the CSP directive 'upgrade-insecure-requests'.
*/
bool GetUpgradeInsecureRequests(bool aPreload) const {
if (aPreload) {
return mUpgradeInsecurePreloads;
}
return mUpgradeInsecureRequests;
}
void SetReferrerInfo(nsIReferrerInfo* aReferrerInfo) {
mReferrerInfo = aReferrerInfo;
}
/*
* Referrer policy from <meta name="referrer" content=`policy`>
* will have higher priority than referrer policy from Referrer-Policy
* header. So override the old ReferrerInfo if we get one from meta
*/
void UpdateReferrerInfoFromMeta(const nsAString& aMetaReferrer,
bool aPreload);
/**
* Set the principals responsible for this document. Chances are, you do not
* want to be using this.
*/
void SetPrincipals(nsIPrincipal* aPrincipal,
nsIPrincipal* aPartitionedPrincipal);
/**
* Returns true if exempt from HTTPS-Only Mode upgrade.
*/
uint32_t HttpsOnlyStatus() const { return mHttpsOnlyStatus; }
/**
* Return the LoadGroup for the document. May return null.
*/
already_AddRefed<nsILoadGroup> GetDocumentLoadGroup() const {
nsCOMPtr<nsILoadGroup> group = do_QueryReferent(mDocumentLoadGroup);
return group.forget();
}
/**
* Return the fallback base URL for this document, as defined in the HTML
* specification. Note that this can return null if there is no document URI.
*
* XXXbz: This doesn't implement the bits for about:blank yet.
*/
nsIURI* GetFallbackBaseURI() const {
if (mIsSrcdocDocument && mParentDocument) {
return mParentDocument->GetDocBaseURI();
}
return mDocumentURI;
}
/**
* Return the referrer from document URI as defined in the Referrer Policy
* specification.
* https://w3c.github.io/webappsec-referrer-policy/#determine-requests-referrer
* While document is an iframe srcdoc document, let document be document's
* browsing context's browsing context container's node document.
* Then referrer should be document's URL
*/
nsIURI* GetDocumentURIAsReferrer() const {
if (mIsSrcdocDocument && mParentDocument) {
return mParentDocument->GetDocumentURIAsReferrer();
}
return mDocumentURI;
}
/**
* Return the base URI for relative URIs in the document (the document uri
* unless it's overridden by SetBaseURI, HTML <base> tags, etc.). The
* returned URI could be null if there is no document URI. If the document is
* a srcdoc document and has no explicit base URL, return the parent
* document's base URL.
*/
nsIURI* GetDocBaseURI() const {
if (mDocumentBaseURI) {
return mDocumentBaseURI;
}
return GetFallbackBaseURI();
}
nsIURI* GetBaseURI(bool aTryUseXHRDocBaseURI = false) const final;
void SetBaseURI(nsIURI* aURI);
/**
* Resolves a URI based on the document's base URI.
*/
Result<OwningNonNull<nsIURI>, nsresult> ResolveWithBaseURI(
const nsAString& aURI);
/**
* Return the URL data which style system needs for resolving url value.
* This method attempts to use the cached object in mCachedURLData, but
* if the base URI, document URI, or principal has changed since last
* call to this function, or the function is called the first time for
* the document, a new one is created.
*/
URLExtraData* DefaultStyleAttrURLData();
/**
* Get/Set the base target of a link in a document.
*/
void GetBaseTarget(nsAString& aBaseTarget) const {
aBaseTarget = mBaseTarget;
}
void SetBaseTarget(const nsString& aBaseTarget) { mBaseTarget = aBaseTarget; }
/**
* Return a standard name for the document's character set.
*/
NotNull<const Encoding*> GetDocumentCharacterSet() const {
return mCharacterSet;
}
/**
* Set the document's character encoding.
*/
void SetDocumentCharacterSet(NotNull<const Encoding*> aEncoding);
int32_t GetDocumentCharacterSetSource() const { return mCharacterSetSource; }
// This method MUST be called before SetDocumentCharacterSet if
// you're planning to call both.
void SetDocumentCharacterSetSource(int32_t aCharsetSource) {
mCharacterSetSource = aCharsetSource;
}
/**
* Get the Content-Type of this document.
*/
void GetContentType(nsAString& aContentType);
/**
* Set the Content-Type of this document.
*/
virtual void SetContentType(const nsAString& aContentType);
/**
* Return the language of this document.
*/
void GetContentLanguage(nsAString& aContentLanguage) const {
CopyASCIItoUTF16(mContentLanguage, aContentLanguage);
}
// The states BidiEnabled and MathMLEnabled should persist across multiple
// views (screen, print) of the same document.
/**
* Check if the document contains bidi data.
* If so, we have to apply the Unicode Bidi Algorithm.
*/
bool GetBidiEnabled() const { return mBidiEnabled; }
/**
* Indicate the document contains bidi data.
* Currently, we cannot disable bidi, because once bidi is enabled,
* it affects a frame model irreversibly, and plays even though
* the document no longer contains bidi data.
*/
void SetBidiEnabled() { mBidiEnabled = true; }
void SetMathMLEnabled() { mMathMLEnabled = true; }
/**
* Ask this document whether it's the initial document in its window.
*/
bool IsInitialDocument() const { return mIsInitialDocumentInWindow; }
/**
* Tell this document that it's the initial document in its window. See
* comments on mIsInitialDocumentInWindow for when this should be called.
*/
void SetIsInitialDocument(bool aIsInitialDocument);
void SetLoadedAsData(bool aLoadedAsData) { mLoadedAsData = aLoadedAsData; }
/**
* Normally we assert if a runnable labeled with one DocGroup touches data
* from another DocGroup. Calling IgnoreDocGroupMismatches() on a document
* means that we can touch that document from any DocGroup without asserting.
*/
void IgnoreDocGroupMismatches() { mIgnoreDocGroupMismatches = true; }
/**
* Get the bidi options for this document.
* @see nsBidiUtils.h
*/
uint32_t GetBidiOptions() const { return mBidiOptions; }
/**
* Set the bidi options for this document. This just sets the bits;
* callers are expected to take action as needed if they want this
* change to actually change anything immediately.
* @see nsBidiUtils.h
*/
void SetBidiOptions(uint32_t aBidiOptions) { mBidiOptions = aBidiOptions; }
/**
* Set CSP flag for this document.
*/
void SetHasCSP(bool aHasCSP) { mHasCSP = aHasCSP; }
/**
* Set unsafe-inline CSP flag for this document.
*/
void SetHasUnsafeInlineCSP(bool aHasUnsafeInlineCSP) {
mHasUnsafeInlineCSP = aHasUnsafeInlineCSP;
}
/**
* Set unsafe-eval CSP flag for this document.
*/
void SetHasUnsafeEvalCSP(bool aHasUnsafeEvalCSP) {
mHasUnsafeEvalCSP = aHasUnsafeEvalCSP;
}
/**
* Returns true if the document holds a CSP
* delivered through an HTTP Header.
*/
bool GetHasCSPDeliveredThroughHeader() {
return mHasCSPDeliveredThroughHeader;
}
/**
* Return a promise which resolves to the content blocking events.
*/
typedef MozPromise<uint32_t, bool, true> GetContentBlockingEventsPromise;
[[nodiscard]] RefPtr<GetContentBlockingEventsPromise>
GetContentBlockingEvents();
/**
* Get the sandbox flags for this document.
* @see nsSandboxFlags.h for the possible flags
*/
uint32_t GetSandboxFlags() const { return mSandboxFlags; }
Maybe<nsILoadInfo::CrossOriginEmbedderPolicy> GetEmbedderPolicy() const {
return mEmbedderPolicy;
}
void SetEmbedderPolicy(
const Maybe<nsILoadInfo::CrossOriginEmbedderPolicy>& aCOEP) {
mEmbedderPolicy = aCOEP;
}
/**
* Get string representation of sandbox flags (null if no flags are set)
*/
void GetSandboxFlagsAsString(nsAString& aFlags);
/**
* Set the sandbox flags for this document.
* @see nsSandboxFlags.h for the possible flags
*/
void SetSandboxFlags(uint32_t sandboxFlags) { mSandboxFlags = sandboxFlags; }
/**
* Called when the document was decoded as UTF-8 and decoder encountered no
* errors.
*/
void EnableEncodingMenu() { mEncodingMenuDisabled = false; }
/**
* Called to disable client access to cookies through the document.cookie API
* from user JavaScript code.
*/
void DisableCookieAccess() { mDisableCookieAccess = true; }
void SetLinkHandlingEnabled(bool aValue) { mLinksEnabled = aValue; }
bool LinkHandlingEnabled() { return mLinksEnabled; }
/**
* Set compatibility mode for this document
*/
void SetCompatibilityMode(nsCompatibility aMode);
/**
* Called to disable client access to document.write() API from user
* JavaScript code.
*/
void SetDocWriteDisabled(bool aDisabled) { mDisableDocWrite = aDisabled; }
/**
* Whether a document.write() call is in progress.
*/
bool IsWriting() const { return mWriteLevel != uint32_t(0); }
/**
* Access HTTP header data (this may also get set from other
* sources, like HTML META tags).
*/
void GetHeaderData(nsAtom* aHeaderField, nsAString& aData) const;
void SetHeaderData(nsAtom* aheaderField, const nsAString& aData);
/**
* Create a new presentation shell that will use aContext for its
* presentation context (presentation contexts <b>must not</b> be
* shared among multiple presentation shells). The caller of this
* method is responsible for calling BeginObservingDocument() on the
* presshell if the presshell should observe document mutations.
*/
already_AddRefed<PresShell> CreatePresShell(nsPresContext* aContext,
nsViewManager* aViewManager);
void DeletePresShell();
PresShell* GetPresShell() const {
return GetBFCacheEntry() ? nullptr : mPresShell;
}
inline PresShell* GetObservingPresShell() const;
// Return whether the presshell for this document is safe to flush.
bool IsSafeToFlush() const;
inline nsPresContext* GetPresContext() const;
bool HasShellOrBFCacheEntry() const { return mPresShell || mBFCacheEntry; }
// Instead using this method, what you probably want is
// RemoveFromBFCacheSync() as we do in MessagePort and BroadcastChannel.
void DisallowBFCaching();
bool IsBFCachingAllowed() const { return !mBFCacheDisallowed; }
// Accepts null to clear the BFCache entry too.
void SetBFCacheEntry(nsIBFCacheEntry* aEntry);
nsIBFCacheEntry* GetBFCacheEntry() const { return mBFCacheEntry; }
// Removes this document from the BFCache, if it is cached, and returns
// true if it was.
bool RemoveFromBFCacheSync();
/**
* Return the parent document of this document. Will return null
* unless this document is within a compound document and has a
* parent. Note that this parent chain may cross chrome boundaries.
*/
Document* GetInProcessParentDocument() const { return mParentDocument; }
/**
* Set the parent document of this document.
*/
void SetParentDocument(Document* aParent) {
mParentDocument = aParent;
if (aParent) {
mIgnoreDocGroupMismatches = aParent->mIgnoreDocGroupMismatches;
if (!mIsDevToolsDocument) {
mIsDevToolsDocument = mParentDocument->IsDevToolsDocument();
}
}
}
/**
* Are plugins allowed in this document ?
*/
bool GetAllowPlugins();
/**
* Set the sub document for aContent to aSubDoc.
*/
nsresult SetSubDocumentFor(Element* aContent, Document* aSubDoc);
/**
* Get the sub document for aContent
*/
Document* GetSubDocumentFor(nsIContent* aContent) const;
/**
* Get the content node for which this document is a sub document.
*/
Element* GetEmbedderElement() const;
/**
* Return the doctype for this document.
*/
DocumentType* GetDoctype() const;
/**
* Return the root element for this document.
*/
Element* GetRootElement() const;
Selection* GetSelection(ErrorResult& aRv);
already_AddRefed<Promise> HasStorageAccess(ErrorResult& aRv);
already_AddRefed<Promise> RequestStorageAccess(ErrorResult& aRv);
bool UseRegularPrincipal() const;
/**
* Gets the event target to dispatch key events to if there is no focused
* content in the document.
*/
virtual Element* GetUnfocusedKeyEventTarget();
/**
* Retrieve information about the viewport as a data structure.
* This will return information in the viewport META data section
* of the document. This can be used in lieu of ProcessViewportInfo(),
* which places the viewport information in the document header instead
* of returning it directly.
*
* @param aDisplaySize size of the on-screen display area for this
* document, in device pixels.
*
* NOTE: If the site is optimized for mobile (via the doctype), this
* will return viewport information that specifies default information.
*/
nsViewportInfo GetViewportInfo(const ScreenIntSize& aDisplaySize);
void AddMetaViewportElement(HTMLMetaElement* aElement,
ViewportMetaData&& aData);
void RemoveMetaViewportElement(HTMLMetaElement* aElement);
// Returns a ViewportMetaData for this document.
ViewportMetaData GetViewportMetaData() const;
/**
* True iff this doc will ignore manual character encoding overrides.
*/
virtual bool WillIgnoreCharsetOverride() { return true; }
/**
* Return whether the document was created by a srcdoc iframe.
*/
bool IsSrcdocDocument() const { return mIsSrcdocDocument; }
/**
* Sets whether the document was created by a srcdoc iframe.
*/
void SetIsSrcdocDocument(bool aIsSrcdocDocument) {
mIsSrcdocDocument = aIsSrcdocDocument;
}
/*
* Gets the srcdoc string from within the channel (assuming both exist).
* Returns a void string if this isn't a srcdoc document or if
* the channel has not been set.
*/
nsresult GetSrcdocData(nsAString& aSrcdocData);
already_AddRefed<AnonymousContent> InsertAnonymousContent(
Element& aElement, ErrorResult& aError);
void RemoveAnonymousContent(AnonymousContent& aContent, ErrorResult& aError);
/**
* If aNode is a descendant of anonymous content inserted by
* InsertAnonymousContent, this method returns the root element of the
* inserted anonymous content (in other words, the clone of the aElement
* that was passed to InsertAnonymousContent).
*/
Element* GetAnonRootIfInAnonymousContentContainer(nsINode* aNode) const;
nsTArray<RefPtr<AnonymousContent>>& GetAnonymousContents() {
return mAnonymousContents;
}
TimeStamp GetPageUnloadingEventTimeStamp() const {
if (!mParentDocument) {
return mPageUnloadingEventTimeStamp;
}
TimeStamp parentTimeStamp(
mParentDocument->GetPageUnloadingEventTimeStamp());
if (parentTimeStamp.IsNull()) {
return mPageUnloadingEventTimeStamp;
}
if (!mPageUnloadingEventTimeStamp ||
parentTimeStamp < mPageUnloadingEventTimeStamp) {
return parentTimeStamp;
}
return mPageUnloadingEventTimeStamp;
}
void NotifyLayerManagerRecreated();
/**
* Add an SVG element to the list of elements that need
* their mapped attributes resolved to a Servo declaration block.
*
* These are weak pointers, please manually unschedule them when an element
* is removed.
*/
void ScheduleSVGForPresAttrEvaluation(SVGElement* aSVG) {
mLazySVGPresElements.Insert(aSVG);
}
// Unschedule an element scheduled by ScheduleFrameRequestCallback (e.g. for
// when it is destroyed)
void UnscheduleSVGForPresAttrEvaluation(SVGElement* aSVG) {
mLazySVGPresElements.Remove(aSVG);
}
// Resolve all SVG pres attrs scheduled in ScheduleSVGForPresAttrEvaluation
void ResolveScheduledSVGPresAttrs();
Maybe<ClientInfo> GetClientInfo() const;
Maybe<ClientState> GetClientState() const;
Maybe<ServiceWorkerDescriptor> GetController() const;
// Returns the size of the mBlockedNodesByClassifier array.
//
// This array contains nodes that have been blocked to prevent user tracking,
// fingerprinting, cryptomining, etc. They most likely have had their
// nsIChannel canceled by the URL classifier (Safebrowsing).
//
// A script can subsequently use GetBlockedNodesByClassifier()
// to get a list of references to these nodes.
//
// Note:
// This expresses how many tracking nodes have been blocked for this document
// since its beginning, not how many of them are still around in the DOM tree.
// Weak references to blocked nodes are added in the mBlockedNodesByClassifier
// array but they are not removed when those nodes are removed from the tree
// or even garbage collected.
long BlockedNodeByClassifierCount() const {
return mBlockedNodesByClassifier.Length();
}
//
// Returns strong references to mBlockedNodesByClassifier. (Document.h)
//
// This array contains nodes that have been blocked to prevent
// user tracking. They most likely have had their nsIChannel
// canceled by the URL classifier (Safebrowsing).
//
already_AddRefed<nsSimpleContentList> BlockedNodesByClassifier() const;
// Helper method that returns true if the document has storage-access sandbox
// flag.
bool StorageAccessSandboxed() const;
// Helper method that returns true if storage access API is enabled and
// the passed flag has storage-access sandbox flag.
static bool StorageAccessSandboxed(uint32_t aSandboxFlags);
// Returns the cookie jar settings for this and sub contexts.
nsICookieJarSettings* CookieJarSettings();
// Returns whether this document has the storage access permission.
bool HasStorageAccessPermissionGranted();
// Increments the document generation.
inline void Changed() { ++mGeneration; }
// Returns the current generation.
inline int32_t GetGeneration() const { return mGeneration; }
// Adds cached sizes values to aSizes if there's any
// cached value and if the document generation hasn't
// changed since the cache was created.
// Returns true if sizes were added.
bool GetCachedSizes(nsTabSizes* aSizes);
// Sets the cache sizes for the current generation.
void SetCachedSizes(nsTabSizes* aSizes);
/**
* Should be called when an element's editable changes as a result of
* changing its contentEditable attribute/property.
*
* The change should be +1 if the contentEditable attribute/property was
* changed to true, -1 if it was changed to false.
*/
void ChangeContentEditableCount(Element*, int32_t aChange);
void DeferredContentEditableCountChange(Element*);
enum class EditingState : int8_t {
eTearingDown = -2,
eSettingUp = -1,
eOff = 0,
eDesignMode,
eContentEditable
};
/**
* Returns the editing state of the document (not editable, contentEditable or
* designMode).
*/
EditingState GetEditingState() const { return mEditingState; }
/**
* Returns whether the document is editable.
*/
bool IsEditingOn() const {
return GetEditingState() == EditingState::eDesignMode ||
GetEditingState() == EditingState::eContentEditable;
}
class MOZ_STACK_CLASS nsAutoEditingState {
public:
nsAutoEditingState(Document* aDoc, EditingState aState)
: mDoc(aDoc), mSavedState(aDoc->mEditingState) {
aDoc->mEditingState = aState;
}
~nsAutoEditingState() { mDoc->mEditingState = mSavedState; }
private:
RefPtr<Document> mDoc;
EditingState mSavedState;
};
friend class nsAutoEditingState;
/**
* Set the editing state of the document. Don't use this if you want
* to enable/disable editing, call EditingStateChanged() or
* SetDesignMode().
*/
void SetEditingState(EditingState aState) { mEditingState = aState; }
/**
* Called when this Document's editor is destroyed.
*/
void TearingDownEditor();
void SetKeyPressEventModel(uint16_t aKeyPressEventModel);
// Gets the next form number.
//
// Used by nsContentUtils::GenerateStateKey to get a unique number for each
// parser inserted form element.
int32_t GetNextFormNumber() { return mNextFormNumber++; }
// Gets the next form control number.
//
// Used by nsContentUtils::GenerateStateKey to get a unique number for each
// parser inserted form control element.
int32_t GetNextControlNumber() { return mNextControlNumber++; }
PreloadService& Preloads() { return mPreloadService; }
bool HasThirdPartyChannel();
bool ShouldIncludeInTelemetry(bool aAllowExtensionURIs);
void AddMediaElementWithMSE();
void RemoveMediaElementWithMSE();
protected:
friend class nsUnblockOnloadEvent;
nsresult InitCSP(nsIChannel* aChannel);
nsresult InitCOEP(nsIChannel* aChannel);
nsresult InitFeaturePolicy(nsIChannel* aChannel);
nsresult InitReferrerInfo(nsIChannel* aChannel);
void PostUnblockOnloadEvent();
void DoUnblockOnload();
void RetrieveRelevantHeaders(nsIChannel* aChannel);
void TryChannelCharset(nsIChannel* aChannel, int32_t& aCharsetSource,
NotNull<const Encoding*>& aEncoding,
nsHtml5TreeOpExecutor* aExecutor);
void DispatchContentLoadedEvents();
void DispatchPageTransition(EventTarget* aDispatchTarget,
const nsAString& aType, bool aInFrameSwap,
bool aPersisted, bool aOnlySystemGroup);
// Call this before the document does something that will unbind all content.
// That will stop us from doing a lot of work as each element is removed.
void DestroyElementMaps();
Element* GetRootElementInternal() const;
void DoNotifyPossibleTitleChange();
void SetPageUnloadingEventTimeStamp() {
MOZ_ASSERT(!mPageUnloadingEventTimeStamp);
mPageUnloadingEventTimeStamp = TimeStamp::NowLoRes();
}
void CleanUnloadEventsTimeStamp() {
MOZ_ASSERT(mPageUnloadingEventTimeStamp);
mPageUnloadingEventTimeStamp = TimeStamp();
}
/**
* Clears any Servo element data stored on Elements in the document.
*/
void ClearStaleServoData();
/**
* Returns the top window root from the outer window.
*/
already_AddRefed<nsPIWindowRoot> GetWindowRoot();
/**
* Do the tree-disconnection that ResetToURI and document.open need to do.
*/
void DisconnectNodeTree();
/**
* MaybeDispatchCheckKeyPressEventModelEvent() dispatches
* "CheckKeyPressEventModel" event to check whether we should dispatch
* keypress events in confluent model or split model. This should be
* called only when mEditingState is changed to eDesignMode or
* eConentEditable at first time.
*/
void MaybeDispatchCheckKeyPressEventModelEvent();
/* Midas implementation */
nsCommandManager* GetMidasCommandManager();
MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult TurnEditingOff();
// MOZ_CAN_RUN_SCRIPT_BOUNDARY because this is called from all sorts
// of places, and I'm pretty sure the exact ExecCommand call it
// makes cannot actually run script.
MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult EditingStateChanged();
void MaybeEditingStateChanged();
private:
class SelectorCacheKey {
public:
explicit SelectorCacheKey(const nsACString& aString) : mKey(aString) {
MOZ_COUNT_CTOR(SelectorCacheKey);
}
nsCString mKey;
nsExpirationState mState;
nsExpirationState* GetExpirationState() { return &mState; }
MOZ_COUNTED_DTOR(SelectorCacheKey)
};
class SelectorCacheKeyDeleter;
public:
class SelectorCache final : public nsExpirationTracker<SelectorCacheKey, 4> {
public:
using SelectorList = UniquePtr<RawServoSelectorList>;
using Table = nsTHashMap<nsCStringHashKey, SelectorList>;
explicit SelectorCache(nsIEventTarget* aEventTarget);
void NotifyExpired(SelectorCacheKey*) final;
// We do not call MarkUsed because it would just slow down lookups and
// because we're OK expiring things after a few seconds even if they're
// being used. Returns whether we actually had an entry for aSelector.
//
// If we have an entry and the selector list returned has a null
// RawServoSelectorList*, that indicates that aSelector has already been
// parsed and is not a syntactically valid selector.
template <typename F>
RawServoSelectorList* GetListOrInsertFrom(const nsACString& aSelector,
F&& aFrom) {
MOZ_ASSERT(NS_IsMainThread());
return mTable.LookupOrInsertWith(aSelector, std::forward<F>(aFrom)).get();
}
~SelectorCache();
private:
Table mTable;
};
SelectorCache& GetSelectorCache() {
if (!mSelectorCache) {
mSelectorCache =
MakeUnique<SelectorCache>(EventTargetFor(TaskCategory::Other));
}
return *mSelectorCache;
}
// Get the root <html> element, or return null if there isn't one (e.g.
// if the root isn't <html>)
Element* GetHtmlElement() const;
// Returns the first child of GetHtmlContent which has the given tag,
// or nullptr if that doesn't exist.
Element* GetHtmlChildElement(nsAtom* aTag);
// Get the canonical <body> element, or return null if there isn't one (e.g.
// if the root isn't <html> or if the <body> isn't there)
HTMLBodyElement* GetBodyElement();
// Get the canonical <head> element, or return null if there isn't one (e.g.
// if the root isn't <html> or if the <head> isn't there)
Element* GetHeadElement() { return GetHtmlChildElement(nsGkAtoms::head); }
// Get the "body" in the sense of document.body: The first <body> or
// <frameset> that's a child of a root <html>
nsGenericHTMLElement* GetBody();
// Set the "body" in the sense of document.body.
void SetBody(nsGenericHTMLElement* aBody, ErrorResult& rv);
// Get the "head" element in the sense of document.head.
HTMLSharedElement* GetHead();
ServoStyleSet* StyleSetForPresShellOrMediaQueryEvaluation() const {
return mStyleSet.get();
}
// ShadowRoot has APIs that can change styles. This notifies the shell that
// stlyes applicable in the shadow tree have potentially changed.
void RecordShadowStyleChange(ShadowRoot&);
// Needs to be called any time the applicable style can has changed, in order
// to schedule a style flush and setup all the relevant state.
void ApplicableStylesChanged();
// Whether we filled the style set with any style sheet. Only meant to be used
// from DocumentOrShadowRoot::Traverse.
bool StyleSetFilled() const { return mStyleSetFilled; }
/**
* Accessors to the collection of stylesheets owned by this document.
* Style sheets are ordered, most significant last.
*/
void InsertSheetAt(size_t aIndex, StyleSheet&);
/**
* Add a stylesheet to the document
*
* TODO(emilio): This is only used by parts of editor that are no longer in
* use by m-c or c-c, so remove.
*/
void AddStyleSheet(StyleSheet* aSheet) {
MOZ_ASSERT(aSheet);
InsertSheetAt(SheetCount(), *aSheet);
}
/**
* Notify the document that the applicable state of the sheet changed
* and that observers should be notified and style sets updated
*/
void StyleSheetApplicableStateChanged(StyleSheet&);
void PostStyleSheetApplicableStateChangeEvent(StyleSheet&);
enum additionalSheetType {
eAgentSheet,
eUserSheet,
eAuthorSheet,
AdditionalSheetTypeCount
};
nsresult LoadAdditionalStyleSheet(additionalSheetType aType,
nsIURI* aSheetURI);
nsresult AddAdditionalStyleSheet(additionalSheetType aType,
StyleSheet* aSheet);
void RemoveAdditionalStyleSheet(additionalSheetType aType, nsIURI* sheetURI);
StyleSheet* GetFirstAdditionalAuthorSheet() {
return mAdditionalSheets[eAuthorSheet].SafeElementAt(0);
}
/**
* Returns the index that aSheet should be inserted at to maintain document
* ordering.
*/
size_t FindDocStyleSheetInsertionPoint(const StyleSheet& aSheet);
/**
* Get this document's CSSLoader. This is guaranteed to not return null.
*/
css::Loader* CSSLoader() const { return mCSSLoader; }
/**
* Get this document's StyleImageLoader. This is guaranteed to not return
* null.
*/
css::ImageLoader* StyleImageLoader() const { return mStyleImageLoader; }
/**
* Get the channel that was passed to StartDocumentLoad or Reset for this
* document. Note that this may be null in some cases (eg if
* StartDocumentLoad or Reset were never called)
*/
nsIChannel* GetChannel() const { return mChannel; }
/**
* Get this document's attribute stylesheet. May return null if
* there isn't one.
*/
nsHTMLStyleSheet* GetAttributeStyleSheet() const { return mAttrStyleSheet; }
/**
* Get this document's inline style sheet. May return null if there
* isn't one
*/
nsHTMLCSSStyleSheet* GetInlineStyleSheet() const {
return mStyleAttrStyleSheet;
}
virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aGlobalObject);
/**
* Get/set the object from which the context for the event/script handling can
* be got. Normally GetScriptHandlingObject() returns the same object as
* GetScriptGlobalObject(), but if the document is loaded as data,
* non-null may be returned, even if GetScriptGlobalObject() returns null.
* aHasHadScriptHandlingObject is set true if document has had the object
* for event/script handling. Do not process any events/script if the method
* returns null, but aHasHadScriptHandlingObject is true.
*/
nsIScriptGlobalObject* GetScriptHandlingObject(
bool& aHasHadScriptHandlingObject) const {
aHasHadScriptHandlingObject = mHasHadScriptHandlingObject;
return mScriptGlobalObject ? mScriptGlobalObject.get()
: GetScriptHandlingObjectInternal();
}
void SetScriptHandlingObject(nsIScriptGlobalObject* aScriptObject);
/**
* Get the object that is used as the scope for all of the content
* wrappers whose owner document is this document. Unlike the script global
* object, this will only return null when the global object for this
* document is truly gone. Use this object when you're trying to find a
* content wrapper in XPConnect.
*/
nsIGlobalObject* GetScopeObject() const;
void SetScopeObject(nsIGlobalObject* aGlobal);
/**
* Return the cross-origin-isolated state from browsing context. If it's a
* data document, we get its creator's state.
*/
bool CrossOriginIsolated() const;
/**
* Return the window containing the document (the outer window).
*/
nsPIDOMWindowOuter* GetWindow() const {
return mWindow ? mWindow->GetOuterWindow() : GetWindowInternal();
}
bool IsInBackgroundWindow() const {
auto* outer = mWindow ? mWindow->GetOuterWindow() : nullptr;
return outer && outer->IsBackground();
}
/**
* Return the inner window used as the script compilation scope for
* this document. If you're not absolutely sure you need this, use
* GetWindow().
*/
nsPIDOMWindowInner* GetInnerWindow() const {
return mRemovedFromDocShell ? nullptr : mWindow;
}
/**
* Return the outer window ID.
*/
uint64_t OuterWindowID() const {
nsPIDOMWindowOuter* window = GetWindow();
return window ? window->WindowID() : 0;
}
/**
* Return the inner window ID.
*/
uint64_t InnerWindowID() const {
nsPIDOMWindowInner* window = GetInnerWindow();
return window ? window->WindowID() : 0;
}
/**
* Return WindowGlobalChild that is associated with the inner window.
*/
WindowGlobalChild* GetWindowGlobalChild() {
return GetInnerWindow() ? GetInnerWindow()->GetWindowGlobalChild()
: nullptr;
}
/**
* Return WindowContext associated with the inner window.
*/
WindowContext* GetWindowContext() const {
return GetInnerWindow() ? GetInnerWindow()->GetWindowContext() : nullptr;
}
bool IsTopLevelWindowInactive() const;
/**
* Get the script loader for this document
*/
dom::ScriptLoader* ScriptLoader() { return mScriptLoader; }
/**
* Add/Remove an element to the document's id and name hashes
*/
void AddToIdTable(Element* aElement, nsAtom* aId);
void RemoveFromIdTable(Element* aElement, nsAtom* aId);
void AddToNameTable(Element* aElement, nsAtom* aName);
void RemoveFromNameTable(Element* aElement, nsAtom* aName);
/**
* Returns all elements in the top layer in the insertion order.
*/
nsTArray<Element*> GetTopLayer() const;
/**
* Asynchronously requests that the document make aElement the fullscreen
* element, and move into fullscreen mode. The current fullscreen element
* (if any) is pushed onto the top layer, and it can be
* returned to fullscreen status by calling RestorePreviousFullscreenState().
*
* Note that requesting fullscreen in a document also makes the element which
* contains this document in this document's parent document fullscreen. i.e.
* the <iframe> or <browser> that contains this document is also mode
* fullscreen. This happens recursively in all ancestor documents.
*/
void AsyncRequestFullscreen(UniquePtr<FullscreenRequest>);
// Do the "fullscreen element ready check" from the fullscreen spec.
// It returns true if the given element is allowed to go into fullscreen.
// It is responsive to dispatch "fullscreenerror" event when necessary.
bool FullscreenElementReadyCheck(FullscreenRequest&);
// This is called asynchronously by Document::AsyncRequestFullscreen()
// to move this document into fullscreen mode if allowed.
void RequestFullscreen(UniquePtr<FullscreenRequest> aRequest,
bool applyFullScreenDirectly = false);
private:
void RequestFullscreenInContentProcess(UniquePtr<FullscreenRequest> aRequest,
bool applyFullScreenDirectly);
void RequestFullscreenInParentProcess(UniquePtr<FullscreenRequest> aRequest,
bool applyFullScreenDirectly);
public:
// Removes all the elements with fullscreen flag set from the top layer, and
// clears their fullscreen flag.
void CleanupFullscreenState();
// Pushes aElement onto the top layer
void TopLayerPush(Element* aElement);
// Removes the topmost element which have aPredicate return true from the top
// layer. The removed element, if any, is returned.
Element* TopLayerPop(FunctionRef<bool(Element*)> aPredicateFunc);
// Pops the fullscreen element from the top layer and clears its
// fullscreen flag.
void UnsetFullscreenElement();
// Pushes the given element into the top of top layer and set fullscreen
// flag.
void SetFullscreenElement(Element* aElement);
// Cancel the dialog element if the document is blocked by the dialog
void TryCancelDialog();
void SetBlockedByModalDialog(HTMLDialogElement&);
void UnsetBlockedByModalDialog(HTMLDialogElement&);
/**
* Called when a frame in a child process has entered fullscreen or when a
* fullscreen frame in a child process changes to another origin.
* aFrameElement is the frame element which contains the child-process
* fullscreen document.
*/
void RemoteFrameFullscreenChanged(Element* aFrameElement);
/**
* Called when a frame in a remote child document has rolled back fullscreen
* so that all its top layer are empty; we must continue the
* rollback in this parent process' doc tree branch which is fullscreen.
* Note that only one branch of the document tree can have its documents in
* fullscreen state at one time. We're in inconsistent state if a
* fullscreen document has a parent and that parent isn't fullscreen. We
* preserve this property across process boundaries.
*/
void RemoteFrameFullscreenReverted();
/**
* Restores the previous fullscreen element to fullscreen status. If there
* is no former fullscreen element, this exits fullscreen, moving the
* top-level browser window out of fullscreen mode.
*/
void RestorePreviousFullscreenState(UniquePtr<FullscreenExit>);
/**
* Returns true if this document is a fullscreen leaf document, i.e. it
* is in fullscreen mode and has no fullscreen children.
*/
bool IsFullscreenLeaf();
/**
* Returns the document which is at the root of this document's branch
* in the in-process document tree. Returns nullptr if the document isn't
* fullscreen.
*/
Document* GetFullscreenRoot();
size_t CountFullscreenElements() const;
/**
* Sets the fullscreen root to aRoot. This stores a weak reference to aRoot
* in this document.
*/
void SetFullscreenRoot(Document* aRoot);
/**
* Synchronously cleans up the fullscreen state on the given document.
*
* Calling this without performing fullscreen transition could lead
* to undesired effect (the transition happens after document state
* flips), hence it should only be called either by nsGlobalWindow
* when we have performed the transition, or when it is necessary to
* clean up the state immediately. Otherwise, AsyncExitFullscreen()
* should be called instead.
*
* aDocument must not be null.
*/
static void ExitFullscreenInDocTree(Document* aDocument);
/**
* Ask the document to exit fullscreen state asynchronously.
*
* Different from ExitFullscreenInDocTree(), this allows the window
* to perform fullscreen transition first if any.
*
* If aDocument is null, it will exit fullscreen from all documents
* in all windows.
*/
static void AsyncExitFullscreen(Document* aDocument);
/**
* Handles any pending fullscreen in aDocument or its subdocuments.
*
* Returns whether there is any fullscreen request handled.
*/
static bool HandlePendingFullscreenRequests(Document* aDocument);
// ScreenOrientation related APIs
void ClearOrientationPendingPromise();
bool SetOrientationPendingPromise(Promise* aPromise);
Promise* GetOrientationPendingPromise() const {
return mOrientationPendingPromise;
}
//----------------------------------------------------------------------
// Document notification API's
/**
* Add a new observer of document change notifications. Whenever
* content is changed, appended, inserted or removed the observers are
* informed. An observer that is already observing the document must
* not be added without being removed first.
*/
void AddObserver(nsIDocumentObserver* aObserver);
/**
* Remove an observer of document change notifications. This will
* return false if the observer cannot be found.
*/
bool RemoveObserver(nsIDocumentObserver* aObserver);
// Observation hooks used to propagate notifications to document observers.
// BeginUpdate must be called before any batch of modifications of the
// content model or of style data, EndUpdate must be called afterward.
// To make this easy and painless, use the mozAutoDocUpdate helper class.
void BeginUpdate();
void EndUpdate();
uint32_t UpdateNestingLevel() { return mUpdateNestLevel; }
void BeginLoad();
virtual void EndLoad();
enum ReadyState {
READYSTATE_UNINITIALIZED = 0,
READYSTATE_LOADING = 1,
READYSTATE_INTERACTIVE = 3,
READYSTATE_COMPLETE = 4
};
// Set the readystate of the document. If aUpdateTimingInformation is true,
// this will record relevant timestamps in the document's performance timing.
// Some consumers (document.open is the only one right now, actually) don't
// want to do that, though.
void SetReadyStateInternal(ReadyState, bool aUpdateTimingInformation = true);
ReadyState GetReadyStateEnum() { return mReadyState; }
void NotifyLoading(bool aNewParentIsLoading, const ReadyState& aCurrentState,
ReadyState aNewState);
void NotifyAbortedLoad();
// notify that a content node changed state. This must happen under
// a scriptblocker but NOT within a begin/end update.
void ContentStateChanged(nsIContent* aContent, EventStates aStateMask);
// Update a set of document states that may have changed.
// This should only be called by callers whose state is also reflected in the
// implementation of Document::GetDocumentState.
//
// aNotify controls whether we notify our DocumentStatesChanged observers.
void UpdateDocumentStates(EventStates aStateMask, bool aNotify);
void ResetDocumentDirection();
// Observation hooks for style data to propagate notifications
// to document observers
void RuleChanged(StyleSheet&, css::Rule*, StyleRuleChangeKind);
void RuleAdded(StyleSheet&, css::Rule&);
void RuleRemoved(StyleSheet&, css::Rule&);
void SheetCloned(StyleSheet&) {}
void ImportRuleLoaded(CSSImportRule&, StyleSheet&);
/**
* Flush notifications for this document and its parent documents
* (since those may affect the layout of this one).
*/
void FlushPendingNotifications(FlushType aType);
/**
* Another variant of the above FlushPendingNotifications. This function
* takes a ChangesToFlush to specify whether throttled animations are flushed
* or not.
* If in doubt, use the above FlushPendingNotifications.
*/
MOZ_CAN_RUN_SCRIPT_BOUNDARY
void FlushPendingNotifications(ChangesToFlush aFlush);
/**
* Calls FlushPendingNotifications on any external resources this document
* has. If this document has no external resources or is an external resource
* itself this does nothing. This should only be called with
* aType >= FlushType::Style.
*/
void FlushExternalResources(FlushType aType);
// Triggers an update of <svg:use> element shadow trees.
void UpdateSVGUseElementShadowTrees() {
if (mSVGUseElementsNeedingShadowTreeUpdate.IsEmpty()) {
return;
}
DoUpdateSVGUseElementShadowTrees();
}
/**
* Only to be used inside Gecko, you can't really do anything with the
* pointer outside Gecko anyway.
*/
nsNodeInfoManager* NodeInfoManager() const { return mNodeInfoManager; }
/**
* Reset the document using the given channel and loadgroup. This works
* like ResetToURI, but also sets the document's channel to aChannel.
* The principal of the document will be set from the channel.
*/
virtual void Reset(nsIChannel* aChannel, nsILoadGroup* aLoadGroup);
/**
* Reset this document to aURI, aLoadGroup, aPrincipal and
* aPartitionedPrincipal. aURI must not be null. If aPrincipal is null, a
* content principal based on aURI will be used.
*/
virtual void ResetToURI(nsIURI* aURI, nsILoadGroup* aLoadGroup,
nsIPrincipal* aPrincipal,
nsIPrincipal* aPartitionedPrincipal);
/**
* Set the container (docshell) for this document. Virtual so that
* docshell can call it.
*/
virtual void SetContainer(nsDocShell* aContainer);
/**
* Get the container (docshell) for this document.
*/
nsISupports* GetContainer() const;
/**
* Get the container's load context for this document.
*/
nsILoadContext* GetLoadContext() const;
/**
* Get docshell the for this document.
*/
nsIDocShell* GetDocShell() const;
/**
* Set and get XML declaration. If aVersion is null there is no declaration.
* aStandalone takes values -1, 0 and 1 indicating respectively that there
* was no standalone parameter in the declaration, that it was given as no,
* or that it was given as yes.
*/
void SetXMLDeclaration(const char16_t* aVersion, const char16_t* aEncoding,
const int32_t aStandalone);
void GetXMLDeclaration(nsAString& aVersion, nsAString& aEncoding,
nsAString& Standalone);
/**
* Returns true if this is what HTML 5 calls an "HTML document" (for example
* regular HTML document with Content-Type "text/html", image documents and
* media documents). Returns false for XHTML and any other documents parsed
* by the XML parser.
*/
bool IsHTMLDocument() const { return mType == eHTML; }
bool IsHTMLOrXHTML() const { return mType == eHTML || mType == eXHTML; }
bool IsXMLDocument() const { return !IsHTMLDocument(); }
bool IsSVGDocument() const { return mType == eSVG; }
bool IsUnstyledDocument() { return IsLoadedAsData(); }
bool LoadsFullXULStyleSheetUpFront() {
if (IsSVGDocument()) {
return false;
}
return AllowXULXBL();
}
bool IsScriptEnabled();
/**
* Returns true if this document was created from a nsXULPrototypeDocument.
*/
bool LoadedFromPrototype() const { return mPrototypeDocument; }
/**
* Returns the prototype the document was created from, or null if it was not
* created from a prototype.
*/
nsXULPrototypeDocument* GetPrototype() const { return mPrototypeDocument; }
bool IsTopLevelContentDocument() const { return mIsTopLevelContentDocument; }
void SetIsTopLevelContentDocument(bool aIsTopLevelContentDocument) {
mIsTopLevelContentDocument = aIsTopLevelContentDocument;
}
bool IsContentDocument() const { return mIsContentDocument; }
void SetIsContentDocument(bool aIsContentDocument) {
mIsContentDocument = aIsContentDocument;
}
void ProcessMETATag(HTMLMetaElement* aMetaElement);
/**
* Create an element with the specified name, prefix and namespace ID.
* Returns null if element name parsing failed.
*/
already_AddRefed<Element> CreateElem(const nsAString& aName, nsAtom* aPrefix,
int32_t aNamespaceID,
const nsAString* aIs = nullptr);
/**
* Get the security info (i.e. SSL state etc) that the document got
* from the channel/document that created the content of the
* document.
*
* @see nsIChannel
*/
nsISupports* GetSecurityInfo() { return mSecurityInfo; }
/**
* Get the channel that failed to load and resulted in an error page, if it
* exists. This is only relevant to error pages.
*/
nsIChannel* GetFailedChannel() const { return mFailedChannel; }
/**
* This function checks if the document that is trying to access
* GetNetErrorInfo is a trusted about net error page or not.
*/
static bool CallerIsTrustedAboutNetError(JSContext* aCx, JSObject* aObject);
/**
* Get security info like error code for a failed channel. This
* property is only exposed to about:neterror documents.
*/
void GetNetErrorInfo(mozilla::dom::NetErrorInfo& aInfo, ErrorResult& aRv);
/**
* This function checks if the document that is trying to access
* GetFailedCertSecurityInfo is a trusted cert error page or not.
*/
static bool CallerIsTrustedAboutCertError(JSContext* aCx, JSObject* aObject);
/**
* Get the security info (i.e. certificate validity, errorCode, etc) for a
* failed Channel. This property is only exposed for about:certerror
* documents.
*/
void GetFailedCertSecurityInfo(mozilla::dom::FailedCertSecurityInfo& aInfo,
ErrorResult& aRv);
/**
* Controls whether or not we allow TLS 1.0/1.1. Only exposed to error pages.
*/
bool AllowDeprecatedTls();
void SetAllowDeprecatedTls(bool aResult);
/**
* Set the channel that failed to load and resulted in an error page.
* This is only relevant to error pages.
*/
void SetFailedChannel(nsIChannel* aChannel) { mFailedChannel = aChannel; }
/**
* Returns the default namespace ID used for elements created in this
* document.
*/
int32_t GetDefaultNamespaceID() const { return mDefaultElementType; }
void RemoveAllProperties();
void RemoveAllPropertiesFor(nsINode* aNode);
nsPropertyTable& PropertyTable() { return mPropertyTable; }
/**
* Sets the ID used to identify this part of the multipart document
*/
void SetPartID(uint32_t aID) { mPartID = aID; }
/**
* Return the ID used to identify this part of the multipart document
*/
uint32_t GetPartID() const { return mPartID; }
/**
* Sanitize the document by resetting all input elements and forms that have
* autocomplete=off to their default values.
*/
void Sanitize();
/**
* Enumerate all subdocuments.
* The enumerator callback should return CallState::Continue to continue
* enumerating, or CallState::Stop to stop. This will never get passed a null
* aDocument.
*/
using SubDocEnumFunc = FunctionRef<CallState(Document&)>;
void EnumerateSubDocuments(SubDocEnumFunc aCallback);
/**
* Collect all the descendant documents for which |aCalback| returns true.
* The callback function must not mutate any state for the given document.
*/
typedef bool (*nsDocTestFunc)(const Document* aDocument);
void CollectDescendantDocuments(nsTArray<RefPtr<Document>>& aDescendants,
nsDocTestFunc aCallback) const;
/**
* Check whether it is safe to cache the presentation of this document
* and all of its subdocuments (depending on the 3rd param). This method
* checks the following conditions recursively:
* - Some document types, such as plugin documents, cannot be safely cached.
* - If there are any pending requests, we don't allow the presentation
* to be cached. Ideally these requests would be suspended and resumed,
* but that is difficult in some cases, such as XMLHttpRequest.
* - If there are any beforeunload or unload listeners, we must fire them
* for correctness, but this likely puts the document into a state where
* it would not function correctly if restored.
*
* |aNewRequest| should be the request for a new document which will
* replace this document in the docshell. The new document's request
* will be ignored when checking for active requests. If there is no
* request associated with the new document, this parameter may be null.
*
* |aBFCacheCombo| is used as a bitmask to indicate what the status
* combination is when we try to BFCache aNewRequest
*/
virtual bool CanSavePresentation(nsIRequest* aNewRequest,
uint16_t& aBFCacheCombo,
bool aIncludeSubdocuments,
bool aAllowUnloadListeners = true);
virtual nsresult Init();
/**
* Notify the document that its associated ContentViewer is being destroyed.
* This releases circular references so that the document can go away.
* Destroy() is only called on documents that have a content viewer.
*/
virtual void Destroy();
/**
* Notify the document that its associated ContentViewer is no longer
* the current viewer for the docshell. The document might still
* be rendered in "zombie state" until the next document is ready.
* The document should save form control state.
*/
void RemovedFromDocShell();
/**
* Get the layout history state that should be used to save and restore state
* for nodes in this document. This may return null; if that happens state
* saving and restoration is not possible.
*/
already_AddRefed<nsILayoutHistoryState> GetLayoutHistoryState() const;
/**
* Methods that can be used to prevent onload firing while an event that
* should block onload is posted. onload is guaranteed to not fire until
* either all calls to BlockOnload() have been matched by calls to
* UnblockOnload() or the load has been stopped altogether (by the user
* pressing the Stop button, say).
*/
void BlockOnload();
/**
* @param aFireSync whether to fire onload synchronously. If false,
* onload will fire asynchronously after all onload blocks have been
* removed. It will NOT fire from inside UnblockOnload. If true,
* onload may fire from inside UnblockOnload.
*/
void UnblockOnload(bool aFireSync);
// Only BlockOnload should call this!
void AsyncBlockOnload();
void BlockDOMContentLoaded() { ++mBlockDOMContentLoaded; }
void UnblockDOMContentLoaded();
/**
* Notification that the page has been shown, for documents which are loaded
* into a DOM window. This corresponds to the completion of document load,
* or to the page's presentation being restored into an existing DOM window.
* This notification fires applicable DOM events to the content window. See
* PageTransitionEvent.webidl for a description of the |aPersisted|
* parameter. If aDispatchStartTarget is null, the pageshow event is
* dispatched on the ScriptGlobalObject for this document, otherwise it's
* dispatched on aDispatchStartTarget. If |aOnlySystemGroup| is true, the
* event is only dispatched to listeners in the system group.
* Note: if aDispatchStartTarget isn't null, the showing state of the
* document won't be altered.
*/
virtual void OnPageShow(bool aPersisted, EventTarget* aDispatchStartTarget,
bool aOnlySystemGroup = false);
/**
* Notification that the page has been hidden, for documents which are loaded
* into a DOM window. This corresponds to the unloading of the document, or
* to the document's presentation being saved but removed from an existing
* DOM window. This notification fires applicable DOM events to the content
* window. See PageTransitionEvent.webidl for a description of the
* |aPersisted| parameter. If aDispatchStartTarget is null, the pagehide
* event is dispatched on the ScriptGlobalObject for this document,
* otherwise it's dispatched on aDispatchStartTarget. If |aOnlySystemGroup| is
* true, the event is only dispatched to listeners in the system group.
* Note: if aDispatchStartTarget isn't null, the showing state of the
* document won't be altered.
*/
void OnPageHide(bool aPersisted, EventTarget* aDispatchStartTarget,
bool aOnlySystemGroup = false);
/*
* We record the set of links in the document that are relevant to
* style.
*/
/**
* Notification that an element is a link that is relevant to style.
*/
void AddStyleRelevantLink(Link* aLink) {
NS_ASSERTION(aLink, "Passing in a null link. Expect crashes RSN!");
#ifdef DEBUG
NS_ASSERTION(!mStyledLinks.Contains(aLink),
"Document already knows about this Link!");
mStyledLinksCleared = false;
#endif
mStyledLinks.Insert(aLink);
}
/**
* Notification that an element is a link and its URI might have been
* changed or the element removed. If the element is still a link relevant
* to style, then someone must ensure that AddStyleRelevantLink is
* (eventually) called on it again.
*/
void ForgetLink(Link* aLink) {
NS_ASSERTION(aLink, "Passing in a null link. Expect crashes RSN!");
#ifdef DEBUG
bool linkContained = mStyledLinks.Contains(aLink);
NS_ASSERTION(linkContained || mStyledLinksCleared,
"Document knows nothing about this Link!");
#endif
mStyledLinks.Remove(aLink);
}
// Refreshes the hrefs of all the links in the document.
void RefreshLinkHrefs();
/**
* Support for window.matchMedia()
*/
already_AddRefed<MediaQueryList> MatchMedia(const nsACString& aMediaQueryList,
CallerType aCallerType);
LinkedList<MediaQueryList>& MediaQueryLists() { return mDOMMediaQueryLists; }
/**
* Get the compatibility mode for this document
*/
nsCompatibility GetCompatibilityMode() const { return mCompatMode; }
/**
* Check whether we've ever fired a DOMTitleChanged event for this
* document.
*/
bool HaveFiredDOMTitleChange() const { return mHaveFiredTitleChange; }
/**
* To batch DOMSubtreeModified, document needs to be informed when
* a mutation event might be dispatched, even if the event isn't actually
* created because there are no listeners for it.
*
* @param aTarget is the target for the mutation event.
*/
void MayDispatchMutationEvent(nsINode* aTarget) {
if (mSubtreeModifiedDepth > 0) {
mSubtreeModifiedTargets.AppendObject(aTarget);
}
}
/**
* Marks as not-going-to-be-collected for the given generation of
* cycle collection.
*/
void MarkUncollectableForCCGeneration(uint32_t aGeneration) {
mMarkedCCGeneration = aGeneration;
}
/**
* Gets the cycle collector generation this document is marked for.
*/
uint32_t GetMarkedCCGeneration() { return mMarkedCCGeneration; }
/**
* Returns whether this document is cookie averse. See
* https://html.spec.whatwg.org/multipage/dom.html#cookie-averse-document-object
*/
bool IsCookieAverse() const {
// If we are a document that "has no browsing context."
if (!GetInnerWindow()) {
return true;
}
// If we are a document "whose URL's scheme is not a network scheme."
// NB: Explicitly allow file: URIs to store cookies.
return !NodePrincipal()->SchemeIs("http") &&
!NodePrincipal()->SchemeIs("https") &&
!NodePrincipal()->SchemeIs("ftp") &&
!NodePrincipal()->SchemeIs("file");
}
bool IsLoadedAsData() { return mLoadedAsData; }
bool MayStartLayout() { return mMayStartLayout; }
void SetMayStartLayout(bool aMayStartLayout);
already_AddRefed<nsIDocumentEncoder> GetCachedEncoder();
void SetCachedEncoder(already_AddRefed<nsIDocumentEncoder> aEncoder);
// In case of failure, the document really can't initialize the frame loader.
nsresult InitializeFrameLoader(nsFrameLoader* aLoader);
// In case of failure, the caller must handle the error, for example by
// finalizing frame loader asynchronously.
nsresult FinalizeFrameLoader(nsFrameLoader* aLoader, nsIRunnable* aFinalizer);
// Removes the frame loader of aShell from the initialization list.
void TryCancelFrameLoaderInitialization(nsIDocShell* aShell);
/**
* Check whether this document is a root document that is not an
* external resource.
*/
bool IsRootDisplayDocument() const {
return !mParentDocument && !mDisplayDocument;
}
bool IsDocumentURISchemeChrome() const { return mDocURISchemeIsChrome; }
bool IsInChromeDocShell() const {
const Document* root = this;
while (const Document* displayDoc = root->GetDisplayDocument()) {
root = displayDoc;
}
return root->mInChromeDocShell;
}
bool IsDevToolsDocument() const { return mIsDevToolsDocument; }
bool IsBeingUsedAsImage() const { return mIsBeingUsedAsImage; }
void SetIsBeingUsedAsImage() { mIsBeingUsedAsImage = true; }
bool IsSVGGlyphsDocument() const { return mIsSVGGlyphsDocument; }
void SetIsSVGGlyphsDocument() { mIsSVGGlyphsDocument = true; }
bool IsResourceDoc() const {
return IsBeingUsedAsImage() || // Are we a helper-doc for an SVG image?
mHasDisplayDocument; // Are we an external resource doc?
}
/**
* Get the document for which this document is an external resource. This
* will be null if this document is not an external resource. Otherwise,
* GetDisplayDocument() will return a non-null document, and
* GetDisplayDocument()->GetDisplayDocument() is guaranteed to be null.
*/
Document* GetDisplayDocument() const { return mDisplayDocument; }
/**
* Set the display document for this document. aDisplayDocument must not be
* null.
*/
void SetDisplayDocument(Document* aDisplayDocument) {
MOZ_ASSERT(!GetPresShell() && !GetContainer() && !GetWindow(),
"Shouldn't set mDisplayDocument on documents that already "
"have a presentation or a docshell or a window");
MOZ_ASSERT(aDisplayDocument, "Must not be null");
MOZ_ASSERT(aDisplayDocument != this, "Should be different document");
MOZ_ASSERT(!aDisplayDocument->GetDisplayDocument(),
"Display documents should not nest");
mDisplayDocument = aDisplayDocument;
mHasDisplayDocument = !!aDisplayDocument;
}
/**
* Request an external resource document for aURI. This will return the
* resource document if available. If one is not available yet, it will
* start loading as needed, and the pending load object will be returned in
* aPendingLoad so that the caller can register an observer to wait for the
* load. If this function returns null and doesn't return a pending load,
* that means that there is no resource document for this URI and won't be
* one in the future.
*
* @param aURI the URI to get
* @param aReferrerInfo the referrerInfo of the request
* @param aRequestingNode the node making the request
* @param aPendingLoad the pending load for this request, if any
*/
Document* RequestExternalResource(nsIURI* aURI,
nsIReferrerInfo* aReferrerInfo,
nsINode* aRequestingNode,
ExternalResourceLoad** aPendingLoad);
/**
* Enumerate the external resource documents associated with this document.
* The enumerator callback should return CallState::Continue to continue
* enumerating, or CallState::Stop to stop. This callback will never get
* passed a null aDocument.
*/
void EnumerateExternalResources(SubDocEnumFunc aCallback);
dom::ExternalResourceMap& ExternalResourceMap() {
return mExternalResourceMap;
}
/**
* Return whether the document is currently showing (in the sense of
* OnPageShow() having been called already and OnPageHide() not having been
* called yet.
*/
bool IsShowing() const { return mIsShowing; }
/**
* Return whether the document is currently visible (in the sense of
* OnPageHide having been called and OnPageShow not yet having been called)
*/
bool IsVisible() const { return mVisible; }
void SetSuppressedEventListener(EventListener* aListener);
EventListener* GetSuppressedEventListener() {
return mSuppressedEventListener;
}
/**
* Return true when this document is active, i.e., an active document
* in a content viewer. Note that this will return true for bfcached
* documents, so this does NOT match the "active document" concept in
* the WHATWG spec - see IsCurrentActiveDocument.
*/
bool IsActive() const { return mDocumentContainer && !mRemovedFromDocShell; }
/**
* Return true if this is the current active document for its
* docshell. Note that a docshell may have multiple active documents
* due to the bfcache -- this should be used when you need to
* differentiate the *current* active document from any active
* documents.
*/
bool IsCurrentActiveDocument() const {
nsPIDOMWindowInner* inner = GetInnerWindow();
return inner && inner->IsCurrentInnerWindow() && inner->GetDoc() == this;
}
/**
* Returns whether this document should perform image loads.
*/
bool ShouldLoadImages() const {
// We check IsBeingUsedAsImage() so that SVG documents loaded as
// images can themselves have data: URL image references.
return IsCurrentActiveDocument() || IsBeingUsedAsImage() ||
IsStaticDocument();
}
void SetHasPrintCallbacks() {
MOZ_DIAGNOSTIC_ASSERT(IsStaticDocument());
mHasPrintCallbacks = true;
}
bool HasPrintCallbacks() const { return mHasPrintCallbacks; }
/**
* Register/Unregister the ActivityObserver into mActivityObservers to listen
* the document's activity changes such as OnPageHide, visibility, activity.
* The ActivityObserver objects can be nsIObjectLoadingContent or
* nsIDocumentActivity or HTMLMEdiaElement.
*/
void RegisterActivityObserver(nsISupports* aSupports);
bool UnregisterActivityObserver(nsISupports* aSupports);
// Enumerate all the observers in mActivityObservers by the aEnumerator.
using ActivityObserverEnumerator = FunctionRef<void(nsISupports*)>;
void EnumerateActivityObservers(ActivityObserverEnumerator aEnumerator);
// Indicates whether mAnimationController has been (lazily) initialized.
// If this returns true, we're promising that GetAnimationController()
// will have a non-null return value.
bool HasAnimationController() { return !!mAnimationController; }
// Getter for this document's SMIL Animation Controller. Performs lazy
// initialization, if this document supports animation and if
// mAnimationController isn't yet initialized.
//
// If HasAnimationController is true, this is guaranteed to return non-null.
SMILAnimationController* GetAnimationController();
// Gets the tracker for animations that are waiting to start.
// Returns nullptr if there is no pending animation tracker for this document
// which will be the case if there have never been any CSS animations or
// transitions on elements in the document.
PendingAnimationTracker* GetPendingAnimationTracker() {
return mPendingAnimationTracker;
}
// Gets the tracker for animations that are waiting to start and
// creates it if it doesn't already exist. As a result, the return value
// will never be nullptr.
PendingAnimationTracker* GetOrCreatePendingAnimationTracker();
/**
* Prevents user initiated events from being dispatched to the document and
* subdocuments.
*/
void SuppressEventHandling(uint32_t aIncrease = 1);
/**
* Unsuppress event handling.
* @param aFireEvents If true, delayed events (focus/blur) will be fired
* asynchronously.
*/
void UnsuppressEventHandlingAndFireEvents(bool aFireEvents);
uint32_t EventHandlingSuppressed() const { return mEventsSuppressed; }
bool IsEventHandlingEnabled() const {
return !EventHandlingSuppressed() && mScriptGlobalObject;
}
bool WouldScheduleFrameRequestCallbacks() const {
// If this function changes to depend on some other variable, make sure to
// call UpdateFrameRequestCallbackSchedulingState() calls to the places
// where that variable can change.
return mPresShell && IsEventHandlingEnabled();
}
void DecreaseEventSuppression() {
MOZ_ASSERT(mEventsSuppressed);
--mEventsSuppressed;
UpdateFrameRequestCallbackSchedulingState();
}
/**
* Some clipboard commands are unconditionally enabled on some documents, so
* as to always dispatch copy / paste events even though you'd normally not be
* able to copy.
*/
bool AreClipboardCommandsUnconditionallyEnabled() const;
/**
* Note a ChannelEventQueue which has been suspended on the document's behalf
* to prevent XHRs from running content scripts while event handling is
* suppressed. The document is responsible for resuming the queue after
* event handling is unsuppressed.
*/
void AddSuspendedChannelEventQueue(net::ChannelEventQueue* aQueue);
/**
* Returns true if a postMessage event should be suspended instead of running.
* The document is responsible for running the event later, in the order they
* were received.
*/
bool SuspendPostMessageEvent(PostMessageEvent* aEvent);
/**
* Run any suspended postMessage events, or clear them.
*/
void FireOrClearPostMessageEvents(bool aFireEvents);
void SetHasDelayedRefreshEvent() { mHasDelayedRefreshEvent = true; }
/**
* Flag whether we're about to fire the window's load event for this document.
*/
void SetLoadEventFiring(bool aFiring) { mLoadEventFiring = aFiring; }
/**
* Test whether we should be firing a load event for this document after a
* document.close(). This is public and on Document, instead of being private
* to Document, because we need to go through the normal docloader logic
* for the readystate change to READYSTATE_COMPLETE with the normal timing and
* semantics of firing the load event; we just don't want to fire the load
* event if this tests true. So we need the docloader to be able to access
* this state.
*
* This method should only be called at the point when the load event is about
* to be fired. It resets the "skip" flag, so it is not idempotent.
*/
bool SkipLoadEventAfterClose() {
bool skip = mSkipLoadEventAfterClose;
mSkipLoadEventAfterClose = false;
return skip;
}
/**
* Increment https://html.spec.whatwg.org/#ignore-destructive-writes-counter
*/
void IncrementIgnoreDestructiveWritesCounter() {
++mIgnoreDestructiveWritesCounter;
}
/**
* Decrement https://html.spec.whatwg.org/#ignore-destructive-writes-counter
*/
void DecrementIgnoreDestructiveWritesCounter() {
--mIgnoreDestructiveWritesCounter;
}
bool IsDNSPrefetchAllowed() const { return mAllowDNSPrefetch; }
/**
* Returns true if this document is allowed to contain XUL element and
* use non-builtin XBL bindings.
*/
bool AllowXULXBL() {
return mAllowXULXBL == eTriTrue ? true
: mAllowXULXBL == eTriFalse ? false
: InternalAllowXULXBL();
}
/**
* Returns true if this document is allowed to load DTDs from UI resources
* no matter what.
*/
bool SkipDTDSecurityChecks() { return mSkipDTDSecurityChecks; }
void ForceEnableXULXBL() { mAllowXULXBL = eTriTrue; }
void ForceSkipDTDSecurityChecks() { mSkipDTDSecurityChecks = true; }
/**
* Returns the template content owner document that owns the content of
* HTMLTemplateElement.
*/
Document* GetTemplateContentsOwner();
/**
* Returns true if this document is a static clone of a normal document.
*
* We create static clones for print preview and printing (possibly other
* things in future).
*
* Note that static documents are also "loaded as data" (if this method
* returns true, IsLoadedAsData() will also return true).
*/
bool IsStaticDocument() const { return mIsStaticDocument; }
/**
* Clones the document along with any subdocuments, stylesheet, etc.
*
* The resulting document and everything it contains (including any
* sub-documents) are created purely via cloning. The returned documents and
* any sub-documents are "loaded as data" documents to preserve the state as
* it was during the clone process (we don't want external resources to load
* and replace the cloned resources).
*
* @param aCloneContainer The container for the clone document.
* @param aContentViewer The viewer for the clone document. Must be the viewer
* of aCloneContainer, but callers must have a reference
* to it already and ensure it's not null.
* @param aOutHasInProcessPrintCallbacks Self-descriptive.
*/
already_AddRefed<Document> CreateStaticClone(
nsIDocShell* aCloneContainer, nsIContentViewer* aContentViewer,
bool* aOutHasInProcessPrintCallbacks);
/**
* If this document is a static clone, this returns the original
* document.
*/
Document* GetOriginalDocument() const {
MOZ_ASSERT(!mOriginalDocument || !mOriginalDocument->GetOriginalDocument());
return mOriginalDocument;
}
/**
* If this document is a static clone, let the original document know that
* we're going away and then release our reference to it.
*/
void UnlinkOriginalDocumentIfStatic();
/**
* These are called by the parser as it encounters <picture> tags, the end of
* said tags, and possible picture <source srcset> sources respectively. These
* are used to inform ResolvePreLoadImage() calls. Unset attributes are
* expected to be marked void.
*
* NOTE that the parser does not attempt to track the current picture nesting
* level or whether the given <source> tag is within a picture -- it is only
* guaranteed to order these calls properly with respect to
* ResolvePreLoadImage.
*/
void PreloadPictureOpened() { mPreloadPictureDepth++; }
void PreloadPictureClosed();
void PreloadPictureImageSource(const nsAString& aSrcsetAttr,
const nsAString& aSizesAttr,
const nsAString& aTypeAttr,
const nsAString& aMediaAttr);
/**
* Called by the parser to resolve an image for preloading. The parser will
* call the PreloadPicture* functions to inform us of possible <picture>
* nesting and possible sources, which are used to inform URL selection
* responsive <picture> or <img srcset> images. Unset attributes are expected
* to be marked void.
* If this image is for <picture> or <img srcset>, aIsImgSet will be set to
* true, false otherwise.
*/
already_AddRefed<nsIURI> ResolvePreloadImage(nsIURI* aBaseURI,
const nsAString& aSrcAttr,
const nsAString& aSrcsetAttr,
const nsAString& aSizesAttr,
bool* aIsImgSet);
/**
* Called by nsParser to preload images. Can be removed and code moved
* to nsPreloadURIs::PreloadURIs() in file nsParser.cpp whenever the
* parser-module is linked with gklayout-module. aCrossOriginAttr should
* be a void string if the attr is not present.
* aIsImgSet is the value got from calling ResolvePreloadImage, it is true
* when this image is for loading <picture> or <img srcset> images.
*/
void MaybePreLoadImage(nsIURI* uri, const nsAString& aCrossOriginAttr,
ReferrerPolicyEnum aReferrerPolicy, bool aIsImgSet,
bool aLinkPreload);
void PreLoadImage(nsIURI* uri, const nsAString& aCrossOriginAttr,
ReferrerPolicyEnum aReferrerPolicy, bool aIsImgSet,
bool aLinkPreload);
/**
* Called by images to forget an image preload when they start doing
* the real load.
*/
void ForgetImagePreload(nsIURI* aURI);
/**
* Called by the parser or the preload service to preload style sheets.
* aCrossOriginAttr should be a void string if the attr is not present.
*/
SheetPreloadStatus PreloadStyle(nsIURI* aURI, const Encoding* aEncoding,
const nsAString& aCrossOriginAttr,
ReferrerPolicyEnum aReferrerPolicy,
const nsAString& aIntegrity,
css::StylePreloadKind);
/**
* Called by the chrome registry to load style sheets.
*
* This always does a synchronous load, and parses as a normal document sheet.
*/
RefPtr<StyleSheet> LoadChromeSheetSync(nsIURI* aURI);
/**
* Returns true if the locale used for the document specifies a direction of
* right to left. For chrome documents, this comes from the chrome registry.
* This is used to determine the current state for the :-moz-locale-dir
* pseudoclass so once can know whether a document is expected to be rendered
* left-to-right or right-to-left.
*/
bool IsDocumentRightToLeft();
/**
* Called by Parser for link rel=preconnect
*/
void MaybePreconnect(nsIURI* uri, CORSMode aCORSMode);
enum DocumentTheme {
Doc_Theme_Uninitialized, // not determined yet
Doc_Theme_None,
Doc_Theme_Neutral,
Doc_Theme_Dark,
Doc_Theme_Bright
};
/**
* Set the document's pending state object (as serialized using structured
* clone).
*/
void SetStateObject(nsIStructuredCloneContainer* scContainer);
/**
* Set the document's pending state object to the same state object as
* aDocument.
*/
void SetStateObjectFrom(Document* aDocument) {
SetStateObject(aDocument->mStateObjectContainer);
}
/**
* Returns Doc_Theme_None if there is no lightweight theme specified,
* Doc_Theme_Dark for a dark theme, Doc_Theme_Bright for a light theme, and
* Doc_Theme_Neutral for any other theme. This is used to determine the state
* of the pseudoclasses :-moz-lwtheme and :-moz-lwtheme-text.
*/
DocumentTheme GetDocumentLWTheme();
DocumentTheme ThreadSafeGetDocumentLWTheme() const;
void ResetDocumentLWTheme() { mDocLWTheme = Doc_Theme_Uninitialized; }
// Whether we're a media document or not.
enum class MediaDocumentKind {
NotMedia,
Video,
Image,
Plugin,
};
virtual enum MediaDocumentKind MediaDocumentKind() const {
return MediaDocumentKind::NotMedia;
}
/**
* Returns the document state.
* Document state bits have the form NS_DOCUMENT_STATE_* and are declared in
* Document.h.
*/
EventStates GetDocumentState() const { return mDocumentState; }
nsISupports* GetCurrentContentSink();
void SetAutoFocusElement(Element* aAutoFocusElement);
void TriggerAutoFocus();
void SetAutoFocusFired();
bool IsAutoFocusFired();
void SetScrollToRef(nsIURI* aDocumentURI);
MOZ_CAN_RUN_SCRIPT void ScrollToRef();
void ResetScrolledToRefAlready() { mScrolledToRefAlready = false; }
void SetChangeScrollPosWhenScrollingToRef(bool aValue) {
mChangeScrollPosWhenScrollingToRef = aValue;
}
using DocumentOrShadowRoot::GetElementById;
using DocumentOrShadowRoot::GetElementsByClassName;
using DocumentOrShadowRoot::GetElementsByTagName;
using DocumentOrShadowRoot::GetElementsByTagNameNS;
DocumentTimeline* Timeline();
LinkedList<DocumentTimeline>& Timelines() { return mTimelines; }
SVGSVGElement* GetSVGRootElement() const;
struct FrameRequest {
FrameRequest(FrameRequestCallback& aCallback, int32_t aHandle);
~FrameRequest();
// Comparator operators to allow RemoveElementSorted with an
// integer argument on arrays of FrameRequest
bool operator==(int32_t aHandle) const { return mHandle == aHandle; }
bool operator<(int32_t aHandle) const { return mHandle < aHandle; }
RefPtr<FrameRequestCallback> mCallback;
int32_t mHandle;
};
nsresult ScheduleFrameRequestCallback(FrameRequestCallback& aCallback,
int32_t* aHandle);
void CancelFrameRequestCallback(int32_t aHandle);
/**
* Returns true if the handle refers to a callback that was canceled that
* we did not find in our list of callbacks (e.g. because it is one of those
* in the set of callbacks currently queued to be run).
*/
bool IsCanceledFrameRequestCallback(int32_t aHandle) const;
/**
* Put this document's frame request callbacks into the provided
* list, and forget about them.
*/
void TakeFrameRequestCallbacks(nsTArray<FrameRequest>& aCallbacks);
/**
* @return true if this document's frame request callbacks should be
* throttled. We throttle requestAnimationFrame for documents which aren't
* visible (e.g. scrolled out of the viewport).
*/
bool ShouldThrottleFrameRequests() const;
// This returns true when the document tree is being teared down.
bool InUnlinkOrDeletion() { return mInUnlinkOrDeletion; }
dom::ImageTracker* ImageTracker();
// Adds an element to mResponsiveContent when the element is
// added to the tree.
void AddResponsiveContent(HTMLImageElement* aContent) {
MOZ_ASSERT(aContent);
mResponsiveContent.Insert(aContent);
}
// Removes an element from mResponsiveContent when the element is
// removed from the tree.
void RemoveResponsiveContent(HTMLImageElement* aContent) {
MOZ_ASSERT(aContent);
mResponsiveContent.Remove(aContent);
}
void ScheduleSVGUseElementShadowTreeUpdate(SVGUseElement&);
void UnscheduleSVGUseElementShadowTreeUpdate(SVGUseElement& aElement) {
mSVGUseElementsNeedingShadowTreeUpdate.Remove(&aElement);
}
bool SVGUseElementNeedsShadowTreeUpdate(SVGUseElement& aElement) const {
return mSVGUseElementsNeedingShadowTreeUpdate.Contains(&aElement);
}
using ShadowRootSet = nsTHashSet<ShadowRoot*>;
void AddComposedDocShadowRoot(ShadowRoot& aShadowRoot) {
mComposedShadowRoots.Insert(&aShadowRoot);
}
void RemoveComposedDocShadowRoot(ShadowRoot& aShadowRoot) {
mComposedShadowRoots.Remove(&aShadowRoot);
}
// If you're considering using this, you probably want to use
// ShadowRoot::IsComposedDocParticipant instead. This is just for
// sanity-checking.
bool IsComposedDocShadowRoot(ShadowRoot& aShadowRoot) {
return mComposedShadowRoots.Contains(&aShadowRoot);
}
const ShadowRootSet& ComposedShadowRoots() const {
return mComposedShadowRoots;
}
// WebIDL method for chrome code.
void GetConnectedShadowRoots(nsTArray<RefPtr<ShadowRoot>>&) const;
// Notifies any responsive content added by AddResponsiveContent upon media
// features values changing.
void NotifyMediaFeatureValuesChanged();
nsresult GetStateObject(nsIVariant** aResult);
nsDOMNavigationTiming* GetNavigationTiming() const { return mTiming; }
void SetNavigationTiming(nsDOMNavigationTiming* aTiming);
nsContentList* ImageMapList();
// Add aLink to the set of links that need their status resolved.
void RegisterPendingLinkUpdate(Link* aLink);
// Update state on links in mLinksToUpdate.
void FlushPendingLinkUpdates();
bool HasWarnedAbout(DeprecatedOperations aOperation) const;
void WarnOnceAbout(
DeprecatedOperations aOperation, bool asError = false,
const nsTArray<nsString>& aParams = nsTArray<nsString>()) const;
#define DOCUMENT_WARNING(_op) e##_op,
enum DocumentWarnings {
#include "nsDocumentWarningList.h"
eDocumentWarningCount
};
#undef DOCUMENT_WARNING
bool HasWarnedAbout(DocumentWarnings aWarning) const;
void WarnOnceAbout(
DocumentWarnings aWarning, bool asError = false,
const nsTArray<nsString>& aParams = nsTArray<nsString>()) const;
// This method may fire a DOM event; if it does so it will happen
// synchronously.
//
// Whether the event fires is controlled by the argument.
enum class DispatchVisibilityChange { No, Yes };
void UpdateVisibilityState(
DispatchVisibilityChange = DispatchVisibilityChange::Yes);
// Posts an event to call UpdateVisibilityState.
void PostVisibilityUpdateEvent();
bool IsSyntheticDocument() const { return mIsSyntheticDocument; }
// Adds the size of a given node, which must not be a document node, to the
// window sizes passed-in.
static void AddSizeOfNodeTree(nsINode&, nsWindowSizes&);
// Note: Document is a sub-class of nsINode, which has a
// SizeOfExcludingThis function. However, because Document objects can
// only appear at the top of the DOM tree, we have a specialized measurement
// function which returns multiple sizes.
virtual void DocAddSizeOfExcludingThis(nsWindowSizes& aWindowSizes) const;
// DocAddSizeOfIncludingThis doesn't need to be overridden by sub-classes
// because Document inherits from nsINode; see the comment above the
// declaration of nsINode::SizeOfIncludingThis.
virtual void DocAddSizeOfIncludingThis(nsWindowSizes& aWindowSizes) const;
void ConstructUbiNode(void* storage) override;
bool MayHaveDOMMutationObservers() { return mMayHaveDOMMutationObservers; }
void SetMayHaveDOMMutationObservers() { mMayHaveDOMMutationObservers = true; }
bool MayHaveAnimationObservers() { return mMayHaveAnimationObservers; }
void SetMayHaveAnimationObservers() { mMayHaveAnimationObservers = true; }
bool IsInSyncOperation() { return mInSyncOperationCount != 0; }
void SetIsInSyncOperation(bool aSync) {
if (aSync) {
++mInSyncOperationCount;
} else {
--mInSyncOperationCount;
}
}
bool CreatingStaticClone() const { return mCreatingStaticClone; }
/**
* Creates a new element in the HTML namespace with a local name given by
* aTag.
*/
already_AddRefed<Element> CreateHTMLElement(nsAtom* aTag);
// WebIDL API
nsIGlobalObject* GetParentObject() const { return GetScopeObject(); }
static already_AddRefed<Document> Constructor(const GlobalObject& aGlobal,
ErrorResult& rv);
DOMImplementation* GetImplementation(ErrorResult& rv);
[[nodiscard]] nsresult GetURL(nsString& retval) const;
[[nodiscard]] nsresult GetDocumentURI(nsString& retval) const;
// Return the URI for the document.
// The returned value may differ if the document is loaded via XHR, and
// when accessed from chrome privileged script and
// from content privileged script for compatibility.
void GetDocumentURIFromJS(nsString& aDocumentURI, CallerType aCallerType,
ErrorResult& aRv) const;
void GetCompatMode(nsString& retval) const;
void GetCharacterSet(nsAString& retval) const;
// Skip GetContentType, because our NS_IMETHOD version above works fine here.
// GetDoctype defined above
Element* GetDocumentElement() const { return GetRootElement(); }
WindowContext* GetTopLevelWindowContext() const;
// If the top-level ancestor content document for this document is in the same
// process, returns it. Otherwise, returns null. This function is not
// Fission-compatible, and should not be used in new code.
Document* GetTopLevelContentDocumentIfSameProcess();
const Document* GetTopLevelContentDocumentIfSameProcess() const;
// Returns the associated app window if this is a top-level chrome document,
// null otherwise.
already_AddRefed<nsIAppWindow> GetAppWindowIfToplevelChrome() const;
already_AddRefed<Element> CreateElement(
const nsAString& aTagName, const ElementCreationOptionsOrString& aOptions,
ErrorResult& rv);
already_AddRefed<Element> CreateElementNS(
const nsAString& aNamespaceURI, const nsAString& aQualifiedName,
const ElementCreationOptionsOrString& aOptions, ErrorResult& rv);
already_AddRefed<Element> CreateXULElement(
const nsAString& aTagName, const ElementCreationOptionsOrString& aOptions,
ErrorResult& aRv);
already_AddRefed<DocumentFragment> CreateDocumentFragment() const;
already_AddRefed<nsTextNode> CreateTextNode(const nsAString& aData) const;
already_AddRefed<nsTextNode> CreateEmptyTextNode() const;
already_AddRefed<Comment> CreateComment(const nsAString& aData) const;
already_AddRefed<ProcessingInstruction> CreateProcessingInstruction(
const nsAString& target, const nsAString& data, ErrorResult& rv) const;
already_AddRefed<nsINode> ImportNode(nsINode& aNode, bool aDeep,
ErrorResult& rv) const;
nsINode* AdoptNode(nsINode& aNode, ErrorResult& rv);
already_AddRefed<Event> CreateEvent(const nsAString& aEventType,
CallerType aCallerType,
ErrorResult& rv) const;
already_AddRefed<nsRange> CreateRange(ErrorResult& rv);
already_AddRefed<NodeIterator> CreateNodeIterator(nsINode& aRoot,
uint32_t aWhatToShow,
NodeFilter* aFilter,
ErrorResult& rv) const;
already_AddRefed<TreeWalker> CreateTreeWalker(nsINode& aRoot,
uint32_t aWhatToShow,
NodeFilter* aFilter,
ErrorResult& rv) const;
// Deprecated WebIDL bits
already_AddRefed<CDATASection> CreateCDATASection(const nsAString& aData,
ErrorResult& rv);
already_AddRefed<Attr> CreateAttribute(const nsAString& aName,
ErrorResult& rv);
already_AddRefed<Attr> CreateAttributeNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
ErrorResult& rv);
void GetInputEncoding(nsAString& aInputEncoding) const;
already_AddRefed<Location> GetLocation() const;
void GetDomain(nsAString& aDomain);
void SetDomain(const nsAString& aDomain, mozilla::ErrorResult& rv);
void GetCookie(nsAString& aCookie, mozilla::ErrorResult& rv);
void SetCookie(const nsAString& aCookie, mozilla::ErrorResult& rv);
void GetReferrer(nsAString& aReferrer) const;
void GetLastModified(nsAString& aLastModified) const;
void GetReadyState(nsAString& aReadyState) const;
void GetTitle(nsAString& aTitle);
void SetTitle(const nsAString& aTitle, ErrorResult& rv);
void GetDir(nsAString& aDirection) const;
void SetDir(const nsAString& aDirection);
nsIHTMLCollection* Images();
nsIHTMLCollection* Embeds();
nsIHTMLCollection* Plugins() { return Embeds(); }
nsIHTMLCollection* Links();
nsIHTMLCollection* Forms();
nsIHTMLCollection* Scripts();
already_AddRefed<nsContentList> GetElementsByName(const nsAString& aName) {
return GetFuncStringContentList<nsCachableElementsByNameNodeList>(
this, MatchNameAttribute, nullptr, UseExistingNameString, aName);
}
Document* Open(const mozilla::dom::Optional<nsAString>& /* unused */,
const mozilla::dom::Optional<nsAString>& /* unused */,
mozilla::ErrorResult& aError);
mozilla::dom::Nullable<mozilla::dom::WindowProxyHolder> Open(
const nsAString& aURL, const nsAString& aName, const nsAString& aFeatures,
mozilla::ErrorResult& rv);
void Close(mozilla::ErrorResult& rv);
void Write(const mozilla::dom::Sequence<nsString>& aText,
mozilla::ErrorResult& rv);
void Writeln(const mozilla::dom::Sequence<nsString>& aText,
mozilla::ErrorResult& rv);
Nullable<WindowProxyHolder> GetDefaultView() const;
Element* GetActiveElement();
nsIContent* GetUnretargetedFocusedContent() const;
bool HasFocus(ErrorResult& rv) const;
void GetDesignMode(nsAString& aDesignMode);
void SetDesignMode(const nsAString& aDesignMode,
nsIPrincipal& aSubjectPrincipal, mozilla::ErrorResult& rv);
void SetDesignMode(const nsAString& aDesignMode,
const mozilla::Maybe<nsIPrincipal*>& aSubjectPrincipal,
mozilla::ErrorResult& rv);
MOZ_CAN_RUN_SCRIPT
bool ExecCommand(const nsAString& aHTMLCommandName, bool aShowUI,
const nsAString& aValue, nsIPrincipal& aSubjectPrincipal,
mozilla::ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT bool QueryCommandEnabled(const nsAString& aHTMLCommandName,
nsIPrincipal& aSubjectPrincipal,
mozilla::ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT bool QueryCommandIndeterm(
const nsAString& aHTMLCommandName, mozilla::ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT bool QueryCommandState(const nsAString& aHTMLCommandName,
mozilla::ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT bool QueryCommandSupported(
const nsAString& aHTMLCommandName, mozilla::dom::CallerType aCallerType,
mozilla::ErrorResult& aRv);
MOZ_CAN_RUN_SCRIPT void QueryCommandValue(const nsAString& aHTMLCommandName,
nsAString& aValue,
mozilla::ErrorResult& aRv);
nsIHTMLCollection* Applets();
nsIHTMLCollection* Anchors();
TimeStamp LastFocusTime() const;
void SetLastFocusTime(const TimeStamp& aFocusTime);
// Event handlers are all on nsINode already
bool MozSyntheticDocument() const { return IsSyntheticDocument(); }
Element* GetCurrentScript();
void ReleaseCapture() const;
void MozSetImageElement(const nsAString& aImageElementId, Element* aElement);
nsIURI* GetDocumentURIObject() const;
// Not const because all the fullscreen goop is not const
const char* GetFullscreenError(CallerType);
bool FullscreenEnabled(CallerType aCallerType) {
return !GetFullscreenError(aCallerType);
}
Element* GetTopLayerTop();
// Return the fullscreen element in the top layer
Element* GetUnretargetedFullScreenElement() const;
bool Fullscreen() const { return !!GetUnretargetedFullScreenElement(); }
already_AddRefed<Promise> ExitFullscreen(ErrorResult&);
void ExitPointerLock() { PointerLockManager::Unlock(this); }
void GetFgColor(nsAString& aFgColor);
void SetFgColor(const nsAString& aFgColor);
void GetLinkColor(nsAString& aLinkColor);
void SetLinkColor(const nsAString& aLinkColor);
void GetVlinkColor(nsAString& aAvlinkColor);
void SetVlinkColor(const nsAString& aVlinkColor);
void GetAlinkColor(nsAString& aAlinkColor);
void SetAlinkColor(const nsAString& aAlinkColor);
void GetBgColor(nsAString& aBgColor);
void SetBgColor(const nsAString& aBgColor);
void Clear() const {
// Deprecated
}
void CaptureEvents();
void ReleaseEvents();
mozilla::dom::HTMLAllCollection* All();
static bool DocumentSupportsL10n(JSContext* aCx, JSObject* aObject);
static bool IsWebAnimationsEnabled(JSContext* aCx, JSObject* aObject);
static bool IsWebAnimationsEnabled(CallerType aCallerType);
static bool IsWebAnimationsGetAnimationsEnabled(JSContext* aCx,
JSObject* aObject);
static bool AreWebAnimationsImplicitKeyframesEnabled(JSContext* aCx,
JSObject* aObject);
static bool AreWebAnimationsTimelinesEnabled(JSContext* aCx,
JSObject* aObject);
// Checks that the caller is either chrome or some addon.
static bool IsCallerChromeOrAddon(JSContext* aCx, JSObject* aObject);
bool Hidden() const { return mVisibilityState != VisibilityState::Visible; }
dom::VisibilityState VisibilityState() const { return mVisibilityState; }
private:
int32_t mPictureInPictureChildElementCount = 0;
public:
void EnableChildElementInPictureInPictureMode();
void DisableChildElementInPictureInPictureMode();
// True if any child element is being used in picture in picture mode.
bool HasPictureInPictureChildElement() const;
void GetSelectedStyleSheetSet(nsAString& aSheetSet);
void SetSelectedStyleSheetSet(const nsAString& aSheetSet);
void GetLastStyleSheetSet(nsAString& aSheetSet) {
aSheetSet = mLastStyleSheetSet;
}
const nsString& GetCurrentStyleSheetSet() const {
return mLastStyleSheetSet.IsEmpty() ? mPreferredStyleSheetSet
: mLastStyleSheetSet;
}
void SetPreferredStyleSheetSet(const nsAString&);
void GetPreferredStyleSheetSet(nsAString& aSheetSet) {
aSheetSet = mPreferredStyleSheetSet;
}
DOMStringList* StyleSheetSets();
void EnableStyleSheetsForSet(const nsAString& aSheetSet);
/**
* Retrieve the location of the caret position (DOM node and character
* offset within that node), given a point.
*
* @param aX Horizontal point at which to determine the caret position, in
* page coordinates.
* @param aY Vertical point at which to determine the caret position, in
* page coordinates.
*/
already_AddRefed<nsDOMCaretPosition> CaretPositionFromPoint(float aX,
float aY);
Element* GetScrollingElement();
// A way to check whether a given element is what would get returned from
// GetScrollingElement. It can be faster than comparing to the return value
// of GetScrollingElement() due to being able to avoid flushes in various
// cases. This method assumes that null is NOT passed.
bool IsScrollingElement(Element* aElement);
// QuerySelector and QuerySelectorAll already defined on nsINode
XPathExpression* CreateExpression(const nsAString& aExpression,
XPathNSResolver* aResolver,
ErrorResult& rv);
nsINode* CreateNSResolver(nsINode& aNodeResolver);
already_AddRefed<XPathResult> Evaluate(
JSContext* aCx, const nsAString& aExpression, nsINode& aContextNode,
XPathNSResolver* aResolver, uint16_t aType, JS::Handle<JSObject*> aResult,
ErrorResult& rv);
// Touch event handlers already on nsINode
already_AddRefed<Touch> CreateTouch(nsGlobalWindowInner* aView,
EventTarget* aTarget, int32_t aIdentifier,
int32_t aPageX, int32_t aPageY,
int32_t aScreenX, int32_t aScreenY,
int32_t aClientX, int32_t aClientY,
int32_t aRadiusX, int32_t aRadiusY,
float aRotationAngle, float aForce);
already_AddRefed<TouchList> CreateTouchList();
already_AddRefed<TouchList> CreateTouchList(
Touch& aTouch, const Sequence<OwningNonNull<Touch>>& aTouches);
already_AddRefed<TouchList> CreateTouchList(
const Sequence<OwningNonNull<Touch>>& aTouches);
void SetStyleSheetChangeEventsEnabled(bool aValue) {
mStyleSheetChangeEventsEnabled = aValue;
}
bool StyleSheetChangeEventsEnabled() const {
return mStyleSheetChangeEventsEnabled;
}
void SetShadowRootAttachedEventEnabled(bool aValue) {
mShadowRootAttachedEventEnabled = aValue;
}
bool ShadowRootAttachedEventEnabled() const {
return mShadowRootAttachedEventEnabled;
}
already_AddRefed<Promise> BlockParsing(Promise& aPromise,
const BlockParsingOptions& aOptions,
ErrorResult& aRv);
already_AddRefed<nsIURI> GetMozDocumentURIIfNotForErrorPages();
Promise* GetDocumentReadyForIdle(ErrorResult& aRv);
void BlockUnblockOnloadForPDFJS(bool aBlock) {
if (aBlock) {
BlockOnload();
} else {
UnblockOnload(/* aFireSync = */ false);
}
}
nsIDOMXULCommandDispatcher* GetCommandDispatcher();
bool HasXULBroadcastManager() const { return mXULBroadcastManager; };
void InitializeXULBroadcastManager();
XULBroadcastManager* GetXULBroadcastManager() const {
return mXULBroadcastManager;
}
already_AddRefed<nsINode> GetPopupNode();
void SetPopupNode(nsINode* aNode);
nsINode* GetPopupRangeParent(ErrorResult& aRv);
int32_t GetPopupRangeOffset(ErrorResult& aRv);
already_AddRefed<nsINode> GetTooltipNode();
void SetTooltipNode(nsINode* aNode) { /* do nothing */
}
bool DevToolsWatchingDOMMutations() const {
return mDevToolsWatchingDOMMutations;
}
void SetDevToolsWatchingDOMMutations(bool aValue);
void MaybeWarnAboutZoom();
// ParentNode
nsIHTMLCollection* Children();
uint32_t ChildElementCount();
/**
* Asserts IsHTMLOrXHTML, and can't return null.
* Defined inline in nsHTMLDocument.h
*/
inline nsHTMLDocument* AsHTMLDocument();
inline const nsHTMLDocument* AsHTMLDocument() const;
/**
* Asserts IsSVGDocument, and can't return null.
* Defined inline in SVGDocument.h
*/
inline SVGDocument* AsSVGDocument();
inline const SVGDocument* AsSVGDocument() const;
/*
* Given a node, get a weak reference to it and append that reference to
* mBlockedNodesByClassifier. Can be used later on to look up a node in it.
* (e.g., by the UI)
*/
void AddBlockedNodeByClassifier(nsINode* node) {
if (!node) {
return;
}
nsWeakPtr weakNode = do_GetWeakReference(node);
if (weakNode) {
mBlockedNodesByClassifier.AppendElement(weakNode);
}
}
gfxUserFontSet* GetUserFontSet();
void FlushUserFontSet();
void MarkUserFontSetDirty();
FontFaceSet* GetFonts() { return mFontFaceSet; }
// FontFaceSource
FontFaceSet* Fonts();
bool DidFireDOMContentLoaded() const { return mDidFireDOMContentLoaded; }
bool IsSynthesized();
// Records whether we will track use counters for this document, and if so,
// which top-level document that page counters will be accumulated to.
//
// Informs the parent process that page use counters will be sent once the
// document goes away.
void InitUseCounters();
// Reports document use counters via telemetry. This method only has an
// effect once per document, and so is called during document destruction.
void ReportDocumentUseCounters();
// Report how lazyload performs for this document.
void ReportDocumentLazyLoadCounters();
// Sends page use counters to the parent process to accumulate against the
// top-level document. Must be called while we still have access to our
// WindowContext. This method has an effect each time it is called, and we
// call it just before the document loses its window.
void SendPageUseCounters();
void SetUseCounter(UseCounter aUseCounter) {
mUseCounters[aUseCounter] = true;
}
const StyleUseCounters* GetStyleUseCounters() {
return mStyleUseCounters.get();
}
// Propagate our use counters explicitly into the specified referencing
// document.
//
// This is used for SVG image documents, which cannot be enumerated in the
// referencing document's ReportUseCounters() like external resource documents
// can.
void PropagateImageUseCounters(Document* aReferencingDocument);
// Called to track whether this document has had any interaction.
// This is used to track whether we should permit "beforeunload".
void SetUserHasInteracted();
bool UserHasInteracted() { return mUserHasInteracted; }
void ResetUserInteractionTimer();
// This method would return current autoplay policy, it would be "allowed"
// , "allowed-muted" or "disallowed".
DocumentAutoplayPolicy AutoplayPolicy() const;
// This should be called when this document receives events which are likely
// to be user interaction with the document, rather than the byproduct of
// interaction with the browser (i.e. a keypress to scroll the view port,
// keyboard shortcuts, etc). This is used to decide whether we should
// permit autoplay audible media. This also gesture activates all other
// content documents in this tab.
void NotifyUserGestureActivation();
// This function is used for mochitest only.
void ClearUserGestureActivation();
// Return true if NotifyUserGestureActivation() has been called on any
// document in the document tree.
bool HasBeenUserGestureActivated();
// Return true if there is transient user gesture activation and it hasn't yet
// timed out.
bool HasValidTransientUserGestureActivation();
// Return true.
bool ConsumeTransientUserGestureActivation();
BrowsingContext* GetBrowsingContext() const;
// This document is a WebExtension page, it might be a background page, a
// popup, a visible tab, a visible iframe ...e.t.c.
bool IsExtensionPage() const;
bool HasScriptsBlockedBySandbox();
void ReportHasScrollLinkedEffect();
bool HasScrollLinkedEffect() const { return mHasScrollLinkedEffect; }
#ifdef DEBUG
void AssertDocGroupMatchesKey() const;
#endif
DocGroup* GetDocGroup() const {
#ifdef DEBUG
AssertDocGroupMatchesKey();
#endif
return mDocGroup;
}
DocGroup* GetDocGroupOrCreate();
/**
* If we're a sub-document, the parent document's layout can affect our style
* and layout (due to the viewport size, viewport units, media queries...).
*
* This function returns true if our parent document and our child document
* can observe each other. If they cannot, then we don't need to synchronously
* update the parent document layout every time the child document may need
* up-to-date layout information.
*/
bool StyleOrLayoutObservablyDependsOnParentDocumentLayout() const {
return GetInProcessParentDocument() &&
GetDocGroup() == GetInProcessParentDocument()->GetDocGroup();
}
void AddIntersectionObserver(DOMIntersectionObserver* aObserver) {
MOZ_ASSERT(!mIntersectionObservers.Contains(aObserver),
"Intersection observer already in the list");
mIntersectionObservers.Insert(aObserver);
}
void RemoveIntersectionObserver(DOMIntersectionObserver* aObserver) {
mIntersectionObservers.Remove(aObserver);
}
bool HasIntersectionObservers() const {
return !mIntersectionObservers.IsEmpty();
}
void UpdateIntersectionObservations(TimeStamp aNowTime);
void ScheduleIntersectionObserverNotification();
MOZ_CAN_RUN_SCRIPT void NotifyIntersectionObservers();
DOMIntersectionObserver* GetLazyLoadImageObserver() {
return mLazyLoadImageObserver;
}
DOMIntersectionObserver* GetLazyLoadImageObserverViewport() {
return mLazyLoadImageObserverViewport;
}
DOMIntersectionObserver& EnsureLazyLoadImageObserver();
DOMIntersectionObserver& EnsureLazyLoadImageObserverViewport();
void IncLazyLoadImageCount();
void DecLazyLoadImageCount() {
MOZ_DIAGNOSTIC_ASSERT(mLazyLoadImageCount > 0);
--mLazyLoadImageCount;
}
void IncLazyLoadImageStarted() { ++mLazyLoadImageStarted; }
void IncLazyLoadImageReachViewport(bool aLoading);
// Dispatch a runnable related to the document.
nsresult Dispatch(TaskCategory aCategory,
already_AddRefed<nsIRunnable>&& aRunnable) final;
virtual nsISerialEventTarget* EventTargetFor(
TaskCategory aCategory) const override;
virtual AbstractThread* AbstractMainThreadFor(
TaskCategory aCategory) override;
// The URLs passed to this function should match what
// JS::DescribeScriptedCaller() returns, since this API is used to
// determine whether some code is being called from a tracking script.
void NoteScriptTrackingStatus(const nsACString& aURL, bool isTracking);
// The JSContext passed to this method represents the context that we want to
// determine if it belongs to a tracker.
bool IsScriptTracking(JSContext* aCx) const;
// For more information on Flash classification, see
// toolkit/components/url-classifier/flash-block-lists.rst
FlashClassification DocumentFlashClassification();
// ResizeObserver usage.
void AddResizeObserver(ResizeObserver&);
void RemoveResizeObserver(ResizeObserver&);
void ScheduleResizeObserversNotification() const;
// Getter for PermissionDelegateHandler. Performs lazy initialization.
PermissionDelegateHandler* GetPermissionDelegateHandler();
// Notify the document that a fetch or a XHR request has completed
// succesfully in this document. This is used by the password manager to infer
// whether a form is submitted.
void NotifyFetchOrXHRSuccess();
// Set whether NotifyFetchOrXHRSuccess should dispatch an event.
void SetNotifyFetchSuccess(bool aShouldNotify);
// When this is set, removing a form or a password field from DOM
// sends a Chrome-only event. This is now only used by the password manager.
void SetNotifyFormOrPasswordRemoved(bool aShouldNotify);
// This function is used by HTMLFormElement and HTMLInputElement to determin
// whether to send an event when it is removed from DOM.
bool ShouldNotifyFormOrPasswordRemoved() const {
return mShouldNotifyFormOrPasswordRemoved;
}
/**
* Localization
*
* For more information on DocumentL10n see
* intl/l10n/docs/fluent_tutorial.rst
*/
public:
/**
* This is a public method exposed on Document WebIDL
* to chrome only documents.
*/
DocumentL10n* GetL10n();
/**
* This method should be called when the container
* of l10n resources parsing is completed.
*
* It triggers initial async fetch of the resources
* as early as possible.
*
* In HTML case this is </head>.
* In XUL case this is </linkset>.
*/
void OnL10nResourceContainerParsed();
/**
* This method should be called when a link element
* with rel="localization" is being added to the
* l10n resource container element.
*/
void LocalizationLinkAdded(Element* aLinkElement);
/**
* This method should be called when a link element
* with rel="localization" is being removed.
*/
void LocalizationLinkRemoved(Element* aLinkElement);
/**
* This method should be called as soon as the
* parsing of the document is completed.
*
* In HTML/XHTML this happens when we finish parsing
* the document element.
* In XUL it happens at `DoneWalking`, during
* `MozBeforeInitialXULLayout`.
*/
void OnParsingCompleted();
/**
* This method is called when the initial translation
* of the document is completed.
*
* It unblocks the load event if translation was blocking it.
*
* If the `aL10nCached` is set to `true`, and the document has
* a prototype, it will set the `isL10nCached` flag on it.
*/
void InitialTranslationCompleted(bool aL10nCached);
/**
* Returns whether the document allows localization.
*/
bool AllowsL10n() const;
protected:
RefPtr<DocumentL10n> mDocumentL10n;
/**
* Return true when you want a document without explicitly specified viewport
* dimensions/scale to be treated as if "width=device-width" had in fact been
* specified.
*/
virtual bool UseWidthDeviceWidthFallbackViewport() const;
private:
bool IsErrorPage() const;
void EnsureL10n();
// Takes the bits from mStyleUseCounters if appropriate, and sets them in
// mUseCounters.
void SetCssUseCounterBits();
void ParseWidthAndHeightInMetaViewport(const nsAString& aWidthString,
const nsAString& aHeightString,
bool aIsAutoScale);
// Parse scale values in viewport meta tag for a given |aHeaderField| which
// represents the scale property and returns the scale value if it's valid.
Maybe<LayoutDeviceToScreenScale> ParseScaleInHeader(nsAtom* aHeaderField);
// Parse scale values in |aViewportMetaData| and set the values in
// mScaleMinFloat, mScaleMaxFloat and mScaleFloat respectively.
void ParseScalesInViewportMetaData(const ViewportMetaData& aViewportMetaData);
// Get parent FeaturePolicy from container. The parent FeaturePolicy is
// stored in parent iframe or container's browsingContext (cross process)
already_AddRefed<mozilla::dom::FeaturePolicy> GetParentFeaturePolicy();
FlashClassification DocumentFlashClassificationInternal();
public:
bool IsThirdPartyForFlashClassifier();
private:
void DoCacheAllKnownLangPrefs();
void RecomputeLanguageFromCharset();
bool GetSHEntryHasUserInteraction();
public:
void SetMayNeedFontPrefsUpdate() { mMayNeedFontPrefsUpdate = true; }
bool MayNeedFontPrefsUpdate() { return mMayNeedFontPrefsUpdate; }
void SetSHEntryHasUserInteraction(bool aHasInteraction);
already_AddRefed<nsAtom> GetContentLanguageAsAtomForStyle() const;
already_AddRefed<nsAtom> GetLanguageForStyle() const;
/**
* Fetch the user's font preferences for the given aLanguage's
* language group.
*/
const LangGroupFontPrefs* GetFontPrefsForLang(
nsAtom* aLanguage, bool* aNeedsToCache = nullptr) const;
void ForceCacheLang(nsAtom* aLanguage) {
if (!mLanguagesUsed.EnsureInserted(aLanguage)) {
return;
}
GetFontPrefsForLang(aLanguage);
}
void CacheAllKnownLangPrefs() {
if (!mMayNeedFontPrefsUpdate) {
return;
}
DoCacheAllKnownLangPrefs();
}
nsINode* GetServoRestyleRoot() const { return mServoRestyleRoot; }
uint32_t GetServoRestyleRootDirtyBits() const {
MOZ_ASSERT(mServoRestyleRoot);
MOZ_ASSERT(mServoRestyleRootDirtyBits);
return mServoRestyleRootDirtyBits;
}
void ClearServoRestyleRoot() {
mServoRestyleRoot = nullptr;
mServoRestyleRootDirtyBits = 0;
}
inline void SetServoRestyleRoot(nsINode* aRoot, uint32_t aDirtyBits);
inline void SetServoRestyleRootDirtyBits(uint32_t aDirtyBits);
bool ShouldThrowOnDynamicMarkupInsertion() {
return mThrowOnDynamicMarkupInsertionCounter;
}
void IncrementThrowOnDynamicMarkupInsertionCounter() {
++mThrowOnDynamicMarkupInsertionCounter;
}
void DecrementThrowOnDynamicMarkupInsertionCounter() {
MOZ_ASSERT(mThrowOnDynamicMarkupInsertionCounter);
--mThrowOnDynamicMarkupInsertionCounter;
}
bool ShouldIgnoreOpens() const { return mIgnoreOpensDuringUnloadCounter; }
void IncrementIgnoreOpensDuringUnloadCounter() {
++mIgnoreOpensDuringUnloadCounter;
}
void DecrementIgnoreOpensDuringUnloadCounter() {
MOZ_ASSERT(mIgnoreOpensDuringUnloadCounter);
--mIgnoreOpensDuringUnloadCounter;
}
mozilla::dom::FeaturePolicy* FeaturePolicy() const;
bool ModuleScriptsEnabled();
/**
* Find the (non-anonymous) content in this document for aFrame. It will
* be aFrame's content node if that content is in this document and not
* anonymous. Otherwise, when aFrame is in a subdocument, we use the frame
* element containing the subdocument containing aFrame, and/or find the
* nearest non-anonymous ancestor in this document.
* Returns null if there is no such element.
*/
nsIContent* GetContentInThisDocument(nsIFrame* aFrame) const;
void ReportShadowDOMUsage();
// Sets flags for media telemetry.
void SetDocTreeHadMedia();
dom::XPathEvaluator* XPathEvaluator();
void MaybeInitializeFinalizeFrameLoaders();
void SetDelayFrameLoaderInitialization(bool aDelayFrameLoaderInitialization) {
mDelayFrameLoaderInitialization = aDelayFrameLoaderInitialization;
}
void SetPrototypeDocument(nsXULPrototypeDocument* aPrototype);
nsIPermissionDelegateHandler* PermDelegateHandler();
// CSS prefers-color-scheme media feature for this document.
enum class IgnoreRFP { No, Yes };
StylePrefersColorScheme PrefersColorScheme(IgnoreRFP = IgnoreRFP::No) const;
// Returns true if we use overlay scrollbars on the system wide or on the
// given document.
static bool UseOverlayScrollbars(const Document* aDocument);
static bool HasRecentlyStartedForegroundLoads();
static bool AutomaticStorageAccessPermissionCanBeGranted(
nsIPrincipal* aPrincipal);
already_AddRefed<Promise> AddCertException(bool aIsTemporary);
// Subframes need to be static cloned after the main document has been
// embedded within a script global. A `PendingFrameStaticClone` is a static
// clone which has not yet been performed.
//
// The getter returns a direct reference to an internal array which is
// manipulated from within printing code.
struct PendingFrameStaticClone {
PendingFrameStaticClone() = default;
PendingFrameStaticClone(PendingFrameStaticClone&&) = default;
PendingFrameStaticClone& operator=(PendingFrameStaticClone&&) = default;
~PendingFrameStaticClone();
RefPtr<nsFrameLoaderOwner> mElement;
RefPtr<nsFrameLoader> mStaticCloneOf;
};
void AddPendingFrameStaticClone(nsFrameLoaderOwner* aElement,
nsFrameLoader* aStaticCloneOf);
bool ShouldAvoidNativeTheme() const;
protected:
// Returns the WindowContext for the document that we will contribute
// page use counters to.
WindowContext* GetWindowContextForPageUseCounters() const;
void DoUpdateSVGUseElementShadowTrees();
already_AddRefed<nsIPrincipal> MaybeDowngradePrincipal(
nsIPrincipal* aPrincipal);
void EnsureOnloadBlocker();
void SendToConsole(nsCOMArray<nsISecurityConsoleMessage>& aMessages);
// Returns true if the scheme for the url for this document is "about".
bool IsAboutPage() const;
bool ContainsEMEContent();
bool ContainsMSEContent();
/**
* Returns the title element of the document as defined by the HTML
* specification, or null if there isn't one. For documents whose root
* element is an <svg:svg>, this is the first <svg:title> element that's a
* child of the root. For other documents, it's the first HTML title element
* in the document.
*/
Element* GetTitleElement();
void RecordNavigationTiming(ReadyState aReadyState);
// Recomputes the visibility state but doesn't set the new value.
dom::VisibilityState ComputeVisibilityState() const;
// Since we wouldn't automatically play media from non-visited page, we need
// to notify window when the page was first visited.
void MaybeActiveMediaComponents();
// Apply the fullscreen state to the document, and trigger related
// events. It returns false if the fullscreen element ready check
// fails and nothing gets changed.
bool ApplyFullscreen(UniquePtr<FullscreenRequest>);
void RemoveDocStyleSheetsFromStyleSets();
void ResetStylesheetsToURI(nsIURI* aURI);
void FillStyleSet();
void FillStyleSetUserAndUASheets();
void FillStyleSetDocumentSheets();
void CompatibilityModeChanged();
bool NeedsQuirksSheet() const {
// SVG documents never load quirk.css.
// FIXME(emilio): Can SVG documents be in quirks mode anyway?
return mCompatMode == eCompatibility_NavQuirks && !IsSVGDocument();
}
void AddContentEditableStyleSheetsToStyleSet(bool aDesignMode);
void RemoveContentEditableStyleSheets();
void AddStyleSheetToStyleSets(StyleSheet&);
void RemoveStyleSheetFromStyleSets(StyleSheet&);
void NotifyStyleSheetApplicableStateChanged();
// Just like EnableStyleSheetsForSet, but doesn't check whether
// aSheetSet is null and allows the caller to control whether to set
// aSheetSet as the preferred set in the CSSLoader.
void EnableStyleSheetsForSetInternal(const nsAString& aSheetSet,
bool aUpdateCSSLoader);
already_AddRefed<nsIURI> GetDomainURI();
already_AddRefed<nsIURI> CreateInheritingURIForHost(
const nsACString& aHostString);
already_AddRefed<nsIURI> RegistrableDomainSuffixOfInternal(
const nsAString& aHostSuffixString, nsIURI* aOrigHost);
void WriteCommon(const nsAString& aText, bool aNewlineTerminate,
mozilla::ErrorResult& aRv);
// A version of WriteCommon used by WebIDL bindings
void WriteCommon(const mozilla::dom::Sequence<nsString>& aText,
bool aNewlineTerminate, mozilla::ErrorResult& rv);
void* GenerateParserKey(void);
private:
// ExecCommandParam indicates how HTMLDocument.execCommand() treats given the
// parameter.
enum class ExecCommandParam : uint8_t {
// Always ignore it.
Ignore,
// Treat the given parameter as-is. If the command requires it, use it.
// Otherwise, ignore it.
String,
// Always treat it as boolean parameter.
Boolean,
// Always treat it as boolean, but inverted.
InvertedBoolean,
};
typedef mozilla::EditorCommand*(GetEditorCommandFunc)();
struct InternalCommandData {
const char* mXULCommandName;
mozilla::Command mCommand; // uint8_t
// How ConvertToInternalCommand() to treats aValue.
// Its callers don't need to check this.
ExecCommandParam mExecCommandParam; // uint8_t
GetEditorCommandFunc* mGetEditorCommandFunc;
enum class CommandOnTextEditor : uint8_t {
Disabled,
Enabled,
FallThrough, // Not disabled, but handled by HTMLEditor if there is one
};
CommandOnTextEditor mCommandOnTextEditor;
InternalCommandData()
: mXULCommandName(nullptr),
mCommand(mozilla::Command::DoNothing),
mExecCommandParam(ExecCommandParam::Ignore),
mGetEditorCommandFunc(nullptr),
mCommandOnTextEditor(CommandOnTextEditor::Disabled) {}
InternalCommandData(const char* aXULCommandName, mozilla::Command aCommand,
ExecCommandParam aExecCommandParam,
GetEditorCommandFunc aGetEditorCommandFunc,
CommandOnTextEditor aCommandOnTextEditor)
: mXULCommandName(aXULCommandName),
mCommand(aCommand),
mExecCommandParam(aExecCommandParam),
mGetEditorCommandFunc(aGetEditorCommandFunc),
mCommandOnTextEditor(aCommandOnTextEditor) {}
bool IsAvailableOnlyWhenEditable() const {
return mCommand != mozilla::Command::Cut &&
mCommand != mozilla::Command::Copy &&
mCommand != mozilla::Command::Paste &&
mCommand != mozilla::Command::SetDocumentReadOnly &&
mCommand != mozilla::Command::GetHTML &&
mCommand != mozilla::Command::SelectAll;
}
bool IsCutOrCopyCommand() const {
return mCommand == mozilla::Command::Cut ||
mCommand == mozilla::Command::Copy;
}
bool IsPasteCommand() const { return mCommand == mozilla::Command::Paste; }
};
/**
* AutoEditorCommandTarget considers which editor or global command manager
* handles given command.
*/
class MOZ_RAII AutoEditorCommandTarget {
public:
MOZ_CAN_RUN_SCRIPT AutoEditorCommandTarget(
nsPresContext* aPresContext, const InternalCommandData& aCommandData);
AutoEditorCommandTarget() = delete;
explicit AutoEditorCommandTarget(const AutoEditorCommandTarget& aOther) =
delete;
bool DoNothing() const { return mDoNothing; }
MOZ_CAN_RUN_SCRIPT bool IsEditable(Document* aDocument) const;
bool IsEditor() const {
MOZ_ASSERT_IF(mEditorCommand, mActiveEditor || mHTMLEditor);
return !!mEditorCommand;
}
MOZ_CAN_RUN_SCRIPT bool IsCommandEnabled() const;
MOZ_CAN_RUN_SCRIPT nsresult DoCommand(nsIPrincipal* aPrincipal) const;
template <typename ParamType>
MOZ_CAN_RUN_SCRIPT nsresult DoCommandParam(const ParamType& aParam,
nsIPrincipal* aPrincipal) const;
MOZ_CAN_RUN_SCRIPT nsresult
GetCommandStateParams(nsCommandParams& aParams) const;
private:
// The returned editor's life is guaranteed while this instance is alive.
TextEditor* GetTargetEditor() const;
RefPtr<TextEditor> mActiveEditor;
RefPtr<HTMLEditor> mHTMLEditor;
RefPtr<EditorCommand> mEditorCommand;
const InternalCommandData& mCommandData;
bool mDoNothing = false;
};
/**
* Helper method to initialize sInternalCommandDataHashtable.
*/
static void EnsureInitializeInternalCommandDataHashtable();
/**
* ConvertToInternalCommand() returns a copy of InternalCommandData instance.
* Note that if aAdjustedValue is non-nullptr, this method checks whether
* aValue is proper value or not unless InternalCommandData::mExecCommandParam
* is ExecCommandParam::Ignore. For example, if aHTMLCommandName is
* "defaultParagraphSeparator", the value has to be one of "div", "p" or
* "br". If aValue is invalid value for InternalCommandData::mCommand, this
* returns a copy of instance created with default constructor. I.e., its
* mCommand is set to Command::DoNothing. So, this treats aHTMLCommandName
* is unsupported in such case.
*
* @param aHTMLCommandName Command name in HTML, e.g., used by
* execCommand().
* @param aValue The value which is set to the 3rd parameter
* of execCommand().
* @param aAdjustedValue [out] Must be empty string if set non-nullptr.
* Will be set to adjusted value for executing
* the internal command.
* @return Returns a copy of instance created with the
* default constructor if there is no
* corresponding internal command for
* aHTMLCommandName or aValue is invalid for
* found internal command when aAdjustedValue
* is not nullptr. Otherwise, returns a copy of
* instance registered in
* sInternalCommandDataHashtable.
*/
static InternalCommandData ConvertToInternalCommand(
const nsAString& aHTMLCommandName, const nsAString& aValue = u""_ns,
nsAString* aAdjustedValue = nullptr);
/**
* AutoRunningExecCommandMarker is AutoRestorer for mIsRunningExecCommand.
* Since it's a bit field, not a bool member, therefore, we cannot use
* AutoRestorer for it.
*/
class MOZ_STACK_CLASS AutoRunningExecCommandMarker final {
public:
AutoRunningExecCommandMarker() = delete;
explicit AutoRunningExecCommandMarker(const AutoRunningExecCommandMarker&) =
delete;
// Guaranteeing the document's lifetime with `MOZ_CAN_RUN_SCRIPT`.
MOZ_CAN_RUN_SCRIPT explicit AutoRunningExecCommandMarker(
Document& aDocument)
: mDocument(aDocument),
mHasBeenRunning(aDocument.mIsRunningExecCommand) {
aDocument.mIsRunningExecCommand = true;
}
~AutoRunningExecCommandMarker() {
if (!mHasBeenRunning) {
mDocument.mIsRunningExecCommand = false;
}
}
private:
Document& mDocument;
bool mHasBeenRunning;
};
// Mapping table from HTML command name to internal command.
typedef nsTHashMap<nsStringCaseInsensitiveHashKey, InternalCommandData>
InternalCommandDataHashtable;
static InternalCommandDataHashtable* sInternalCommandDataHashtable;
mutable std::bitset<static_cast<size_t>(
DeprecatedOperations::eDeprecatedOperationCount)>
mDeprecationWarnedAbout;
mutable std::bitset<eDocumentWarningCount> mDocWarningWarnedAbout;
// Lazy-initialization to have mDocGroup initialized in prior to the
// SelectorCaches.
UniquePtr<SelectorCache> mSelectorCache;
UniquePtr<ServoStyleSet> mStyleSet;
protected:
friend class nsDocumentOnStack;
void IncreaseStackRefCnt() { ++mStackRefCnt; }
void DecreaseStackRefCnt() {
if (--mStackRefCnt == 0 && mNeedsReleaseAfterStackRefCntRelease) {
mNeedsReleaseAfterStackRefCntRelease = false;
NS_RELEASE_THIS();
}
}
// Never ever call this. Only call GetWindow!
nsPIDOMWindowOuter* GetWindowInternal() const;
// Never ever call this. Only call GetScriptHandlingObject!
nsIScriptGlobalObject* GetScriptHandlingObjectInternal() const;
// Never ever call this. Only call AllowXULXBL!
bool InternalAllowXULXBL();
/**
* These methods should be called before and after dispatching
* a mutation event.
* To make this easy and painless, use the mozAutoSubtreeModified helper
* class.
*/
void WillDispatchMutationEvent(nsINode* aTarget);
void MutationEventDispatched(nsINode* aTarget);
friend class mozAutoSubtreeModified;
virtual Element* GetNameSpaceElement() override { return GetRootElement(); }
void SetContentTypeInternal(const nsACString& aType);
nsCString GetContentTypeInternal() const { return mContentType; }
// Update our frame request callback scheduling state, if needed. This will
// schedule or unschedule them, if necessary, and update
// mFrameRequestCallbacksScheduled. aOldShell should only be passed when
// mPresShell is becoming null; in that case it will be used to get hold of
// the relevant refresh driver.
void UpdateFrameRequestCallbackSchedulingState(
PresShell* aOldPresShell = nullptr);
// Helper for GetScrollingElement/IsScrollingElement.
bool IsPotentiallyScrollable(HTMLBodyElement* aBody);
void MaybeAllowStorageForOpenerAfterUserInteraction();
void MaybeStoreUserInteractionAsPermission();
// Helpers for GetElementsByName.
static bool MatchNameAttribute(Element* aElement, int32_t aNamespaceID,
nsAtom* aAtom, void* aData);
static void* UseExistingNameString(nsINode* aRootNode, const nsString* aName);
void MaybeResolveReadyForIdle();
typedef MozPromise<bool, bool, true>
AutomaticStorageAccessPermissionGrantPromise;
[[nodiscard]] RefPtr<AutomaticStorageAccessPermissionGrantPromise>
AutomaticStorageAccessPermissionCanBeGranted();
static void AddToplevelLoadingDocument(Document* aDoc);
static void RemoveToplevelLoadingDocument(Document* aDoc);
static AutoTArray<Document*, 8>* sLoadingForegroundTopLevelContentDocument;
friend class cycleCollection;
nsCOMPtr<nsIReferrerInfo> mPreloadReferrerInfo;
nsCOMPtr<nsIReferrerInfo> mReferrerInfo;
nsString mLastModified;
nsCOMPtr<nsIURI> mDocumentURI;
nsCOMPtr<nsIURI> mOriginalURI;
nsCOMPtr<nsIURI> mChromeXHRDocURI;
nsCOMPtr<nsIURI> mDocumentBaseURI;
nsCOMPtr<nsIURI> mChromeXHRDocBaseURI;
// The base domain of the document for third-party checks.
nsCString mBaseDomain;
// A lazily-constructed URL data for style system to resolve URL value.
RefPtr<URLExtraData> mCachedURLData;
nsCOMPtr<nsIReferrerInfo> mCachedReferrerInfo;
nsWeakPtr mDocumentLoadGroup;
WeakPtr<nsDocShell> mDocumentContainer;
NotNull<const Encoding*> mCharacterSet;
int32_t mCharacterSetSource;
// This is just a weak pointer; the parent document owns its children.
Document* mParentDocument;
// A reference to the element last returned from GetRootElement().
Element* mCachedRootElement;
// This is a weak reference, but we hold a strong reference to mNodeInfo,
// which in turn holds a strong reference to this mNodeInfoManager.
nsNodeInfoManager* mNodeInfoManager;
RefPtr<css::Loader> mCSSLoader;
RefPtr<css::ImageLoader> mStyleImageLoader;
RefPtr<nsHTMLStyleSheet> mAttrStyleSheet;
RefPtr<nsHTMLCSSStyleSheet> mStyleAttrStyleSheet;
// Tracking for images in the document.
RefPtr<dom::ImageTracker> mImageTracker;
// A hashtable of ShadowRoots belonging to the composed doc.
//
// See ShadowRoot::Bind and ShadowRoot::Unbind.
ShadowRootSet mComposedShadowRoots;
using SVGUseElementSet = nsTHashSet<SVGUseElement*>;
// The set of <svg:use> elements that need a shadow tree reclone because the
// tree they map to has changed.
SVGUseElementSet mSVGUseElementsNeedingShadowTreeUpdate;
// The set of all object, embed, video/audio elements or
// nsIObjectLoadingContent or DocumentActivity for which this is
// the owner document. (They might not be in the document.)
//
// These are non-owning pointers, the elements are responsible for removing
// themselves when they go away.
UniquePtr<nsTHashSet<nsISupports*>> mActivityObservers;
// A hashtable of styled links keyed by address pointer.
nsTHashSet<Link*> mStyledLinks;
#ifdef DEBUG
// Indicates whether mStyledLinks was cleared or not. This is used to track
// state so we can provide useful assertions to consumers of ForgetLink and
// AddStyleRelevantLink.
bool mStyledLinksCleared;
#endif
// The array of all links that need their status resolved. Links must add
// themselves to this set by calling RegisterPendingLinkUpdate when added to a
// document.
static const size_t kSegmentSize = 128;
typedef SegmentedVector<nsCOMPtr<Link>, kSegmentSize, InfallibleAllocPolicy>
LinksToUpdateList;
LinksToUpdateList mLinksToUpdate;
// SMIL Animation Controller, lazily-initialized in GetAnimationController
RefPtr<SMILAnimationController> mAnimationController;
// Table of element properties for this document.
nsPropertyTable mPropertyTable;
// Our cached .children collection
nsCOMPtr<nsIHTMLCollection> mChildrenCollection;
// Various DOM lists
RefPtr<nsContentList> mImages;
RefPtr<nsContentList> mEmbeds;
RefPtr<nsContentList> mLinks;
RefPtr<nsContentList> mForms;
RefPtr<nsContentList> mScripts;
nsCOMPtr<nsIHTMLCollection> mApplets;
RefPtr<nsContentList> mAnchors;
// container for per-context fonts (downloadable, SVG, etc.)
RefPtr<FontFaceSet> mFontFaceSet;
// Last time this document or a one of its sub-documents was focused. If
// focus has never occurred then mLastFocusTime.IsNull() will be true.
TimeStamp mLastFocusTime;
EventStates mDocumentState;
RefPtr<Promise> mReadyForIdle;
RefPtr<mozilla::dom::FeaturePolicy> mFeaturePolicy;
UniquePtr<ResizeObserverController> mResizeObserverController;
// Permission Delegate Handler, lazily-initialized in
// GetPermissionDelegateHandler
RefPtr<PermissionDelegateHandler> mPermissionDelegateHandler;
bool mBlockAllMixedContent : 1;
bool mBlockAllMixedContentPreloads : 1;
bool mUpgradeInsecureRequests : 1;
bool mUpgradeInsecurePreloads : 1;
bool mDevToolsWatchingDOMMutations : 1;
// True if BIDI is enabled.
bool mBidiEnabled : 1;
// True if we may need to recompute the language prefs for this document.
bool mMayNeedFontPrefsUpdate : 1;
// True if a MathML element has ever been owned by this document.
bool mMathMLEnabled : 1;
// True if this document is the initial document for a window. This should
// basically be true only for documents that exist in newly-opened windows or
// documents created to satisfy a GetDocument() on a window when there's no
// document in it.
bool mIsInitialDocumentInWindow : 1;
bool mIgnoreDocGroupMismatches : 1;
// True if we're loaded as data and therefor has any dangerous stuff, such
// as scripts and plugins, disabled.
bool mLoadedAsData : 1;
// If true, whoever is creating the document has gotten it to the
// point where it's safe to start layout on it.
bool mMayStartLayout : 1;
// True iff we've ever fired a DOMTitleChanged event for this document
bool mHaveFiredTitleChange : 1;
// State for IsShowing(). mIsShowing starts off false. It becomes true when
// OnPageShow happens and becomes false when OnPageHide happens. So it's false
// before the initial load completes and when we're in bfcache or unloaded,
// true otherwise.
bool mIsShowing : 1;
// State for IsVisible(). mVisible starts off true. It becomes false when
// OnPageHide happens, and becomes true again when OnPageShow happens. So
// it's false only when we're in bfcache or unloaded.
bool mVisible : 1;
// True if our content viewer has been removed from the docshell
// (it may still be displayed, but in zombie state). Form control data
// has been saved.
bool mRemovedFromDocShell : 1;
// True iff DNS prefetch is allowed for this document. Note that if the
// document has no window, DNS prefetch won't be performed no matter what.
bool mAllowDNSPrefetch : 1;
// True when this document is a static clone of a normal document
bool mIsStaticDocument : 1;
// True while this document is being cloned to a static document.
bool mCreatingStaticClone : 1;
// True if this static document has any <canvas> element with a
// mozPrintCallback property at the time of the clone.
bool mHasPrintCallbacks : 1;
// True iff the document is being unlinked or deleted.
bool mInUnlinkOrDeletion : 1;
// True if document has ever had script handling object.
bool mHasHadScriptHandlingObject : 1;
// True if we're an SVG document being used as an image.
bool mIsBeingUsedAsImage : 1;
// True if our current document URI's scheme is chrome://
bool mDocURISchemeIsChrome : 1;
// True if we're loaded in a chrome docshell.
bool mInChromeDocShell : 1;
// True if our current document is a DevTools document. Either the url is
// about:devtools-toolbox or the parent document already has
// mIsDevToolsDocument set to true.
// This is used to avoid applying High Contrast mode to DevTools documents.
// See Bug 1575766.
bool mIsDevToolsDocument : 1;
// True is this document is synthetic : stand alone image, video, audio
// file, etc.
bool mIsSyntheticDocument : 1;
// True is there is a pending runnable which will call
// FlushPendingLinkUpdates().
bool mHasLinksToUpdateRunnable : 1;
// True if we're flushing pending link updates.
bool mFlushingPendingLinkUpdates : 1;
// True if a DOMMutationObserver is perhaps attached to a node in the
// document.
bool mMayHaveDOMMutationObservers : 1;
// True if an nsIAnimationObserver is perhaps attached to a node in the
// document.
bool mMayHaveAnimationObservers : 1;
// True if a document load has a CSP attached.
bool mHasCSP : 1;
// True if a document load has a CSP with unsafe-eval attached.
bool mHasUnsafeEvalCSP : 1;
// True if a document load has a CSP with unsafe-inline attached.
bool mHasUnsafeInlineCSP : 1;
// True if the document has a CSP delivered throuh a header
bool mHasCSPDeliveredThroughHeader : 1;
// True if DisallowBFCaching has been called on this document.
bool mBFCacheDisallowed : 1;
bool mHasHadDefaultView : 1;
// Whether style sheet change events will be dispatched for this document
bool mStyleSheetChangeEventsEnabled : 1;
// Whether shadowrootattached events will be dispatched for this document.
bool mShadowRootAttachedEventEnabled : 1;
// Whether the document was created by a srcdoc iframe.
bool mIsSrcdocDocument : 1;
// Whether this document has a display document and thus is considered to
// be a resource document. Normally this is the same as !!mDisplayDocument,
// but mDisplayDocument is cleared during Unlink. mHasDisplayDocument is
// valid in the document's destructor.
bool mHasDisplayDocument : 1;
// Is the current mFontFaceSet valid?
bool mFontFaceSetDirty : 1;
// True if we have fired the DOMContentLoaded event, or don't plan to fire one
// (e.g. we're not being parsed at all).
bool mDidFireDOMContentLoaded : 1;
// True if ReportHasScrollLinkedEffect() has been called.
bool mHasScrollLinkedEffect : 1;
// True if we have frame request callbacks scheduled with the refresh driver.
// This should generally be updated only via
// UpdateFrameRequestCallbackSchedulingState.
bool mFrameRequestCallbacksScheduled : 1;
bool mIsTopLevelContentDocument : 1;
bool mIsContentDocument : 1;
// True if we have called BeginLoad and are expecting a paired EndLoad call.
bool mDidCallBeginLoad : 1;
// True if the encoding menu should be disabled.
bool mEncodingMenuDisabled : 1;
// False if we've disabled link handling for elements inside this document,
// true otherwise.
bool mLinksEnabled : 1;
// True if this document is for an SVG-in-OpenType font.
bool mIsSVGGlyphsDocument : 1;
// True if the document is being destroyed.
bool mInDestructor : 1;
// True if the document has been detached from its content viewer.
bool mIsGoingAway : 1;
bool mInXBLUpdate : 1;
bool mNeedsReleaseAfterStackRefCntRelease : 1;
// Whether we have filled our style set with all the stylesheets.
bool mStyleSetFilled : 1;
// Whether we have a quirks mode stylesheet in the style set.
bool mQuirkSheetAdded : 1;
// Whether we have a contenteditable.css stylesheet in the style set.
bool mContentEditableSheetAdded : 1;
// Whether we have a designmode.css stylesheet in the style set.
bool mDesignModeSheetAdded : 1;
// Keeps track of whether we have a pending
// 'style-sheet-applicable-state-changed' notification.
bool mSSApplicableStateNotificationPending : 1;
// True if this document has ever had an HTML or SVG <title> element
// bound to it
bool mMayHaveTitleElement : 1;
bool mDOMLoadingSet : 1;
bool mDOMInteractiveSet : 1;
bool mDOMCompleteSet : 1;
bool mAutoFocusFired : 1;
bool mScrolledToRefAlready : 1;
bool mChangeScrollPosWhenScrollingToRef : 1;
bool mDelayFrameLoaderInitialization : 1;
bool mSynchronousDOMContentLoaded : 1;
// Set to true when the document is possibly controlled by the ServiceWorker.
// Used to prevent multiple requests to ServiceWorkerManager.
bool mMaybeServiceWorkerControlled : 1;
// These member variables cache information about the viewport so we don't
// have to recalculate it each time.
bool mAllowZoom : 1;
bool mValidScaleFloat : 1;
bool mValidMinScale : 1;
bool mValidMaxScale : 1;
bool mWidthStrEmpty : 1;
// Parser aborted. True if the parser of this document was forcibly
// terminated instead of letting it finish at its own pace.
bool mParserAborted : 1;
// Whether we have reported document use counters for this document with
// Telemetry yet. Normally this is only done at document destruction time,
// but for image documents (SVG documents) that are not guaranteed to be
// destroyed, we report use counters when the image cache no longer has any
// imgRequestProxys pointing to them. We track whether we ever reported use
// counters so that we only report them once for the document.
bool mReportedDocumentUseCounters : 1;
bool mHasReportedShadowDOMUsage : 1;
// Whether an event triggered by the refresh driver was delayed because this
// document has suppressed events.
bool mHasDelayedRefreshEvent : 1;
// The HTML spec has a "iframe load in progress" flag, but that doesn't seem
// to have the right semantics. See
// <https://github.com/whatwg/html/issues/4292>. What we have instead is a
// flag that is set while the window's 'load' event is firing if this document
// is the window's document.
bool mLoadEventFiring : 1;
// The HTML spec has a "mute iframe load" flag, but that doesn't seem to have
// the right semantics. See <https://github.com/whatwg/html/issues/4292>.
// What we have instead is a flag that is set if completion of our document
// via document.close() should skip firing the load event. Note that this
// flag is only relevant for HTML documents, but lives here for reasons that
// are documented above on SkipLoadEventAfterClose().
bool mSkipLoadEventAfterClose : 1;
// When false, the .cookies property is completely disabled
bool mDisableCookieAccess : 1;
// When false, the document.write() API is disabled.
bool mDisableDocWrite : 1;
// Has document.write() been called with a recursion depth higher than
// allowed?
bool mTooDeepWriteRecursion : 1;
/**
* Temporary flag that is set in EndUpdate() to ignore
* MaybeEditingStateChanged() script runners from a nested scope.
*/
bool mPendingMaybeEditingStateChanged : 1;
// mHasBeenEditable is set to true when mEditingState is firstly set to
// eDesignMode or eContentEditable.
bool mHasBeenEditable : 1;
// Whether we've warned about the CSS zoom property.
//
// We don't use the general deprecated operation mechanism for this because we
// also record this as a `CountedUnknownProperty`.
bool mHasWarnedAboutZoom : 1;
// While we're handling an execCommand call, set to true.
bool mIsRunningExecCommand : 1;
// True if we should change the readystate to complete after we fire
// DOMContentLoaded. This happens when we abort a load and
// nsDocumentViewer::EndLoad runs while we still have things blocking
// DOMContentLoaded. We wait for those to complete, and then update the
// readystate when they finish.
bool mSetCompleteAfterDOMContentLoaded : 1;
uint8_t mPendingFullscreenRequests;
uint8_t mXMLDeclarationBits;
// Currently active onload blockers.
uint32_t mOnloadBlockCount;
// Onload blockers which haven't been activated yet.
uint32_t mAsyncOnloadBlockCount;
// Tracks if we are currently processing any document.write calls (either
// implicit or explicit). Note that if a write call writes out something which
// would block the parser, then mWriteLevel will be incorrect until the parser
// finishes processing that script.
uint32_t mWriteLevel;
// The amount of images that have `loading="lazy"` on the page or have loaded
// lazily already.
uint32_t mLazyLoadImageCount;
// Number of lazy-loaded images that we've started loading as a result of
// triggering the lazy-load observer threshold.
uint32_t mLazyLoadImageStarted;
// Number of lazy-loaded images that reached the viewport which were not done
// loading when they did so.
uint32_t mLazyLoadImageReachViewportLoading;
// Number of lazy-loaded images that reached the viewport and were done
// loading when they did so.
uint32_t mLazyLoadImageReachViewportLoaded;
uint32_t mContentEditableCount;
EditingState mEditingState;
// Compatibility mode
nsCompatibility mCompatMode;
// Our readyState
ReadyState mReadyState;
// Ancestor's loading state
bool mAncestorIsLoading;
// Our visibility state
dom::VisibilityState mVisibilityState;
enum Type {
eUnknown, // should never be used
eHTML,
eXHTML,
eGenericXML,
eSVG
};
Type mType;
uint8_t mDefaultElementType;
enum Tri { eTriUnset = 0, eTriFalse, eTriTrue };
Tri mAllowXULXBL;
bool mSkipDTDSecurityChecks;
// The document's script global object, the object from which the
// document can get its script context and scope. This is the
// *inner* window object.
nsCOMPtr<nsIScriptGlobalObject> mScriptGlobalObject;
// If mIsStaticDocument is true, mOriginalDocument points to the original
// document.
RefPtr<Document> mOriginalDocument;
// The bidi options for this document. What this bitfield means is
// defined in nsBidiUtils.h
uint32_t mBidiOptions;
// The sandbox flags on the document. These reflect the value of the sandbox
// attribute of the associated IFRAME or CSP-protectable content, if existent.
// These are set at load time and are immutable - see nsSandboxFlags.h for the
// possible flags.
uint32_t mSandboxFlags;
// The embedder policy obtained from parsing the HTTP response header or from
// our opener if this is the initial about:blank document.
Maybe<nsILoadInfo::CrossOriginEmbedderPolicy> mEmbedderPolicy;
nsCString mContentLanguage;
// The channel that got passed to Document::StartDocumentLoad(), if any.
nsCOMPtr<nsIChannel> mChannel;
// The CSP for every load lives in the Client within the LoadInfo. For all
// document-initiated subresource loads we can use that cached version of the
// CSP so we do not have to deserialize the CSP from the Client all the time.
nsCOMPtr<nsIContentSecurityPolicy> mCSP;
nsCOMPtr<nsIContentSecurityPolicy> mPreloadCSP;
private:
nsCString mContentType;
protected:
// The document's security info
nsCOMPtr<nsISupports> mSecurityInfo;
// The channel that failed to load and resulted in an error page.
// This only applies to error pages. Might be null.
nsCOMPtr<nsIChannel> mFailedChannel;
// if this document is part of a multipart document,
// the ID can be used to distinguish it from the other parts.
uint32_t mPartID;
// Cycle collector generation in which we're certain that this document
// won't be collected
uint32_t mMarkedCCGeneration;
PresShell* mPresShell;
nsCOMArray<nsINode> mSubtreeModifiedTargets;
uint32_t mSubtreeModifiedDepth;
// All images in process of being preloaded. This is a hashtable so
// we can remove them as the real image loads start; that way we
// make sure to not keep the image load going when no one cares
// about it anymore.
nsRefPtrHashtable<nsURIHashKey, imgIRequest> mPreloadingImages;
// A list of preconnects initiated by the preloader. This prevents
// the same uri from being used more than once, and allows the dom
// builder to not repeat the work of the preloader.
nsTHashMap<nsURIHashKey, bool> mPreloadedPreconnects;
// Current depth of picture elements from parser
uint32_t mPreloadPictureDepth;
// Set if we've found a URL for the current picture
nsString mPreloadPictureFoundSource;
// If we're an external resource document, this will be non-null and will
// point to our "display document": the one that all resource lookups should
// go to.
RefPtr<Document> mDisplayDocument;
uint32_t mEventsSuppressed;
// Any XHR ChannelEventQueues that were suspended on this document while
// events were suppressed.
nsTArray<RefPtr<net::ChannelEventQueue>> mSuspendedQueues;
// Any postMessage events that were suspended on this document while events
// were suppressed.
nsTArray<RefPtr<PostMessageEvent>> mSuspendedPostMessageEvents;
RefPtr<EventListener> mSuppressedEventListener;
/**
* https://html.spec.whatwg.org/#ignore-destructive-writes-counter
*/
uint32_t mIgnoreDestructiveWritesCounter;
/**
* The current frame request callback handle
*/
int32_t mFrameRequestCallbackCounter;
// Count of live static clones of this document.
uint32_t mStaticCloneCount;
// If the document is currently printing (or in print preview) this will point
// to the current static clone of this document. This is weak since the clone
// also has a reference to this document.
WeakPtr<Document> mLatestStaticClone;
// Array of nodes that have been blocked to prevent user tracking.
// They most likely have had their nsIChannel canceled by the URL
// classifier. (Safebrowsing)
//
// Weak nsINode pointers are used to allow nodes to disappear.
nsTArray<nsWeakPtr> mBlockedNodesByClassifier;
// Weak reference to mScriptGlobalObject QI:d to nsPIDOMWindow,
// updated on every set of mScriptGlobalObject.
nsPIDOMWindowInner* mWindow;
nsCOMPtr<nsIDocumentEncoder> mCachedEncoder;
nsTArray<FrameRequest> mFrameRequestCallbacks;
// The set of frame request callbacks that were canceled but which we failed
// to find in mFrameRequestCallbacks.
HashSet<int32_t> mCanceledFrameRequestCallbacks;
// This object allows us to evict ourself from the back/forward cache. The
// pointer is non-null iff we're currently in the bfcache.
nsIBFCacheEntry* mBFCacheEntry;
// Our base target.
nsString mBaseTarget;
nsCOMPtr<nsIStructuredCloneContainer> mStateObjectContainer;
nsCOMPtr<nsIVariant> mStateObjectCached;
uint32_t mInSyncOperationCount;
UniquePtr<dom::XPathEvaluator> mXPathEvaluator;
nsTArray<RefPtr<AnonymousContent>> mAnonymousContents;
uint32_t mBlockDOMContentLoaded;
// Our live MediaQueryLists
LinkedList<MediaQueryList> mDOMMediaQueryLists;
// Array of observers
nsTObserverArray<nsIDocumentObserver*> mObservers;
// Flags for use counters used directly by this document.
UseCounters mUseCounters;
// Flags for use counters from resource documents, static clones,
// and SVG images referenced by this document. Those documents propagate
// their use counters up to here, which then count towards the top-level
// document's page use counters.
UseCounters mChildDocumentUseCounters;
// The CSS property use counters.
UniquePtr<StyleUseCounters> mStyleUseCounters;
// Whether we have initialized mShouldReportUseCounters and
// mShouldSendPageUseCounters, and sent any needed message to the parent
// process to indicate that use counter data will be sent at some later point.
bool mUseCountersInitialized : 1;
// Whether this document should report use counters.
bool mShouldReportUseCounters : 1;
// Whether this document should send page use counters. Set to true after
// we've called SendExpectPageUseCounters on the top-level WindowGlobal.
bool mShouldSendPageUseCounters : 1;
// Whether the user has interacted with the document or not:
bool mUserHasInteracted;
// We constantly update the user-interaction anti-tracking permission at any
// user-interaction using a timer. This boolean value is set to true when this
// timer is scheduled.
bool mHasUserInteractionTimerScheduled;
TimeStamp mPageUnloadingEventTimeStamp;
RefPtr<DocGroup> mDocGroup;
RefPtr<nsCommandManager> mMidasCommandManager;
// The set of all the tracking script URLs. URLs are added to this set by
// calling NoteScriptTrackingStatus(). Currently we assume that a URL not
// existing in the set means the corresponding script isn't a tracking script.
nsTHashSet<nsCString> mTrackingScripts;
// Pointer to our parser if we're currently in the process of being
// parsed into.
nsCOMPtr<nsIParser> mParser;
// If the document was created from the the prototype cache there will be a
// reference to the prototype document to allow tracing.
RefPtr<nsXULPrototypeDocument> mPrototypeDocument;
nsrefcnt mStackRefCnt;
// Weak reference to our sink for in case we no longer have a parser. This
// will allow us to flush out any pending stuff from the sink even if
// EndLoad() has already happened.
nsWeakPtr mWeakSink;
// Our update nesting level
uint32_t mUpdateNestLevel;
// HTTPS-Only Mode Status
// Constants are defined at nsILoadInfo::HTTPS_ONLY_*
uint32_t mHttpsOnlyStatus;
enum ViewportType : uint8_t {
DisplayWidthHeight,
Specified,
Unknown,
};
ViewportType mViewportType;
// viewport-fit described by
// https://drafts.csswg.org/css-round-display/#viewport-fit-descriptor
ViewportFitType mViewportFit;
PLDHashTable* mSubDocuments;
DocHeaderData* mHeaderData;
// For determining if this is a flash document which should be
// blocked based on its principal.
FlashClassification mFlashClassification;
// Do not use this value directly. Call the |IsThirdPartyForFlashClassifier()|
// method, which caches its result here.
Maybe<bool> mIsThirdPartyForFlashClassifier;
nsRevocableEventPtr<nsRunnableMethod<Document, void, false>>
mPendingTitleChangeEvent;
RefPtr<nsDOMNavigationTiming> mTiming;
// Recorded time of change to 'loading' state.
TimeStamp mLoadingTimeStamp;
nsWeakPtr mAutoFocusElement;
nsCString mScrollToRef;
// Weak reference to the scope object (aka the script global object)
// that, unlike mScriptGlobalObject, is never unset once set. This
// is a weak reference to avoid leaks due to circular references.
nsWeakPtr mScopeObject;
// Array of intersection observers
nsTHashSet<DOMIntersectionObserver*> mIntersectionObservers;
RefPtr<DOMIntersectionObserver> mLazyLoadImageObserver;
// Used to measure how effective the lazyload thresholds are.
RefPtr<DOMIntersectionObserver> mLazyLoadImageObserverViewport;
// Stack of top layer elements.
nsTArray<nsWeakPtr> mTopLayer;
// The root of the doc tree in which this document is in. This is only
// non-null when this document is in fullscreen mode.
nsWeakPtr mFullscreenRoot;
RefPtr<DOMImplementation> mDOMImplementation;
RefPtr<nsContentList> mImageMaps;
// A set of responsive images keyed by address pointer.
nsTHashSet<HTMLImageElement*> mResponsiveContent;
RefPtr<DocumentTimeline> mDocumentTimeline;
LinkedList<DocumentTimeline> mTimelines;
RefPtr<dom::ScriptLoader> mScriptLoader;
// Tracker for animations that are waiting to start.
// nullptr until GetOrCreatePendingAnimationTracker is called.
RefPtr<PendingAnimationTracker> mPendingAnimationTracker;
// A document "without a browsing context" that owns the content of
// HTMLTemplateElement.
RefPtr<Document> mTemplateContentsOwner;
dom::ExternalResourceMap mExternalResourceMap;
// ScreenOrientation "pending promise" as described by
// http://www.w3.org/TR/screen-orientation/
RefPtr<Promise> mOrientationPendingPromise;
nsTArray<RefPtr<nsFrameLoader>> mInitializableFrameLoaders;
nsTArray<nsCOMPtr<nsIRunnable>> mFrameLoaderFinalizers;
RefPtr<nsRunnableMethod<Document>> mFrameLoaderRunner;
nsTArray<PendingFrameStaticClone> mPendingFrameStaticClones;
// The layout history state that should be used by nodes in this
// document. We only actually store a pointer to it when:
// 1) We have no script global object.
// 2) We haven't had Destroy() called on us yet.
nsCOMPtr<nsILayoutHistoryState> mLayoutHistoryState;
struct MetaViewportElementAndData;
// An array of <meta name="viewport"> elements and their data.
nsTArray<MetaViewportElementAndData> mMetaViewports;
// These member variables cache information about the viewport so we don't
// have to recalculate it each time.
LayoutDeviceToScreenScale mScaleMinFloat;
LayoutDeviceToScreenScale mScaleMaxFloat;
LayoutDeviceToScreenScale mScaleFloat;
CSSToLayoutDeviceScale mPixelRatio;
CSSCoord mMinWidth;
CSSCoord mMaxWidth;
CSSCoord mMinHeight;
CSSCoord mMaxHeight;
RefPtr<EventListenerManager> mListenerManager;
nsCOMPtr<nsIRequest> mOnloadBlocker;
// Gecko-internal sheets used for extensions and such.
// Exposed to privileged script via nsIDOMWindowUtils.loadSheet.
nsTArray<RefPtr<StyleSheet>> mAdditionalSheets[AdditionalSheetTypeCount];
// Member to store out last-selected stylesheet set.
nsString mLastStyleSheetSet;
nsString mPreferredStyleSheetSet;
RefPtr<DOMStyleSheetSetList> mStyleSheetSetList;
// We lazily calculate declaration blocks for SVG elements with mapped
// attributes in Servo mode. This list contains all elements which need lazy
// resolution.
nsTHashSet<SVGElement*> mLazySVGPresElements;
nsTHashSet<RefPtr<nsAtom>> mLanguagesUsed;
// TODO(emilio): Is this hot enough to warrant to be cached?
RefPtr<nsAtom> mLanguageFromCharset;
// Restyle root for servo's style system.
//
// We store this as an nsINode, rather than as an Element, so that we can
// store the Document node as the restyle root if the entire document (along
// with all document-level native-anonymous content) needs to be restyled.
//
// We also track which "descendant" bits (normal/animation-only/lazy-fc) the
// root corresponds to.
nsCOMPtr<nsINode> mServoRestyleRoot;
uint32_t mServoRestyleRootDirtyBits;
// Used in conjunction with the create-an-element-for-the-token algorithm to
// prevent custom element constructors from being able to use document.open(),
// document.close(), and document.write() when they are invoked by the parser.
uint32_t mThrowOnDynamicMarkupInsertionCounter;
// Count of unload/beforeunload/pagehide operations in progress.
uint32_t mIgnoreOpensDuringUnloadCounter;
nsCOMPtr<nsIDOMXULCommandDispatcher>
mCommandDispatcher; // [OWNER] of the focus tracker
RefPtr<XULBroadcastManager> mXULBroadcastManager;
RefPtr<XULPersist> mXULPersist;
RefPtr<ChromeObserver> mChromeObserver;
RefPtr<HTMLAllCollection> mAll;
// document lightweight theme for use with :-moz-lwtheme,
// :-moz-lwtheme-brighttext and :-moz-lwtheme-darktext
DocumentTheme mDocLWTheme;
// Pres shell resolution saved before entering fullscreen mode.
float mSavedResolution;
// Pres shell resolution saved before creating a MobileViewportManager.
float mSavedResolutionBeforeMVM;
nsCOMPtr<nsICookieJarSettings> mCookieJarSettings;
bool mHasStoragePermission;
// Document generation. Gets incremented everytime it changes.
int32_t mGeneration;
// Cached TabSizes values for the document.
int32_t mCachedTabSizeGeneration;
nsTabSizes mCachedTabSizes;
// This is equal to document's principal but with an isolation key. See
// StoragePrincipalHelper.h to know more.
nsCOMPtr<nsIPrincipal> mPartitionedPrincipal;
// The cached storage principal for this document.
// This is mutable so that we can keep EffectiveStoragePrincipal() const
// which is required due to its CloneDocHelper() call site. :-(
mutable nsCOMPtr<nsIPrincipal> mActiveStoragePrincipal;
// See GetNextFormNumber and GetNextControlNumber.
int32_t mNextFormNumber;
int32_t mNextControlNumber;
uint32_t mMediaElementWithMSECount = 0;
// Scope preloads per document. This is used by speculative loading as well.
PreloadService mPreloadService;
// See NotifyFetchOrXHRSuccess and SetNotifyFetchSuccess.
bool mShouldNotifyFetchSuccess;
// See SetNotifyFormOrPasswordRemoved and ShouldNotifyFormOrPasswordRemoved.
bool mShouldNotifyFormOrPasswordRemoved;
// Accumulate JS telemetry collected
void AccumulateJSTelemetry();
// Accumulate page load metrics
void AccumulatePageLoadTelemetry();
public:
// Needs to be public because the bindings code pokes at it.
JS::ExpandoAndGeneration mExpandoAndGeneration;
bool HasPendingInitialTranslation();
nsRefPtrHashtable<nsRefPtrHashKey<Element>, nsXULPrototypeElement>
mL10nProtoElements;
void TraceProtos(JSTracer* aTrc);
float GetSavedResolutionBeforeMVM() { return mSavedResolutionBeforeMVM; }
void SetSavedResolutionBeforeMVM(float aResolution) {
mSavedResolutionBeforeMVM = aResolution;
}
void LoadEventFired();
};
NS_DEFINE_STATIC_IID_ACCESSOR(Document, NS_IDOCUMENT_IID)
/**
* mozAutoSubtreeModified batches DOM mutations so that a DOMSubtreeModified
* event is dispatched, if necessary, when the outermost mozAutoSubtreeModified
* object is deleted.
*/
class MOZ_STACK_CLASS mozAutoSubtreeModified {
public:
/**
* @param aSubTreeOwner The document in which a subtree will be modified.
* @param aTarget The target of the possible DOMSubtreeModified event.
* Can be nullptr, in which case mozAutoSubtreeModified
* is just used to batch DOM mutations.
*/
mozAutoSubtreeModified(Document* aSubtreeOwner, nsINode* aTarget) {
UpdateTarget(aSubtreeOwner, aTarget);
}
~mozAutoSubtreeModified() { UpdateTarget(nullptr, nullptr); }
void UpdateTarget(Document* aSubtreeOwner, nsINode* aTarget) {
if (mSubtreeOwner) {
mSubtreeOwner->MutationEventDispatched(mTarget);
}
mTarget = aTarget;
mSubtreeOwner = aSubtreeOwner;
if (mSubtreeOwner) {
mSubtreeOwner->WillDispatchMutationEvent(mTarget);
}
}
private:
nsCOMPtr<nsINode> mTarget;
RefPtr<Document> mSubtreeOwner;
};
enum class SyncOperationBehavior { eSuspendInput, eAllowInput };
class AutoWalkBrowsingContextGroup {
public:
virtual ~AutoWalkBrowsingContextGroup() = default;
protected:
void SuppressBrowsingContextGroup(BrowsingContextGroup* aGroup);
void UnsuppressDocuments() {
for (const auto& doc : mDocuments) {
UnsuppressDocument(doc);
}
}
virtual void SuppressDocument(Document* aDocument) = 0;
virtual void UnsuppressDocument(Document* aDocument) = 0;
AutoTArray<RefPtr<Document>, 16> mDocuments;
};
class MOZ_RAII nsAutoSyncOperation : private AutoWalkBrowsingContextGroup {
public:
explicit nsAutoSyncOperation(Document* aDocument,
SyncOperationBehavior aSyncBehavior);
~nsAutoSyncOperation();
protected:
void SuppressDocument(Document* aDocument) override;
void UnsuppressDocument(Document* aDocument) override;
private:
uint32_t mMicroTaskLevel;
const SyncOperationBehavior mSyncBehavior;
RefPtr<BrowsingContext> mBrowsingContext;
};
class MOZ_RAII AutoSetThrowOnDynamicMarkupInsertionCounter final {
public:
explicit AutoSetThrowOnDynamicMarkupInsertionCounter(Document* aDocument)
: mDocument(aDocument) {
mDocument->IncrementThrowOnDynamicMarkupInsertionCounter();
}
~AutoSetThrowOnDynamicMarkupInsertionCounter() {
mDocument->DecrementThrowOnDynamicMarkupInsertionCounter();
}
private:
Document* mDocument;
};
class MOZ_RAII IgnoreOpensDuringUnload final {
public:
explicit IgnoreOpensDuringUnload(Document* aDoc) : mDoc(aDoc) {
mDoc->IncrementIgnoreOpensDuringUnloadCounter();
}
~IgnoreOpensDuringUnload() {
mDoc->DecrementIgnoreOpensDuringUnloadCounter();
}
private:
Document* mDoc;
};
bool IsInActiveTab(Document* aDoc);
} // namespace dom
} // namespace mozilla
// XXX These belong somewhere else
nsresult NS_NewHTMLDocument(mozilla::dom::Document** aInstancePtrResult,
bool aLoadedAsData = false);
nsresult NS_NewXMLDocument(mozilla::dom::Document** aInstancePtrResult,
bool aLoadedAsData = false,
bool aIsPlainDocument = false);
nsresult NS_NewSVGDocument(mozilla::dom::Document** aInstancePtrResult);
nsresult NS_NewImageDocument(mozilla::dom::Document** aInstancePtrResult);
nsresult NS_NewVideoDocument(mozilla::dom::Document** aInstancePtrResult);
// Enum for requesting a particular type of document when creating a doc
enum DocumentFlavor {
DocumentFlavorLegacyGuess, // compat with old code until made HTML5-compliant
DocumentFlavorHTML, // HTMLDocument with HTMLness bit set to true
DocumentFlavorSVG, // SVGDocument
DocumentFlavorXML, // XMLDocument
DocumentFlavorPlain, // Just a Document
};
// Note: it's the caller's responsibility to create or get aPrincipal as needed
// -- this method will not attempt to get a principal based on aDocumentURI.
// Also, both aDocumentURI and aBaseURI must not be null.
nsresult NS_NewDOMDocument(
mozilla::dom::Document** aInstancePtrResult, const nsAString& aNamespaceURI,
const nsAString& aQualifiedName, mozilla::dom::DocumentType* aDoctype,
nsIURI* aDocumentURI, nsIURI* aBaseURI, nsIPrincipal* aPrincipal,
bool aLoadedAsData, nsIGlobalObject* aEventObject, DocumentFlavor aFlavor);
nsresult NS_NewPluginDocument(mozilla::dom::Document** aInstancePtrResult);
inline mozilla::dom::Document* nsINode::GetOwnerDocument() const {
mozilla::dom::Document* ownerDoc = OwnerDoc();
return ownerDoc != this ? ownerDoc : nullptr;
}
inline nsINode* nsINode::OwnerDocAsNode() const { return OwnerDoc(); }
inline mozilla::dom::Document* nsINode::AsDocument() {
MOZ_ASSERT(IsDocument());
return static_cast<mozilla::dom::Document*>(this);
}
inline const mozilla::dom::Document* nsINode::AsDocument() const {
MOZ_ASSERT(IsDocument());
return static_cast<const mozilla::dom::Document*>(this);
}
inline nsISupports* ToSupports(mozilla::dom::Document* aDoc) {
return static_cast<nsINode*>(aDoc);
}
#endif /* mozilla_dom_Document_h___ */
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