mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/dom/base/nsIDocument.h

3566 строки
119 KiB
C++
Исходник Ответственный История

/* -*- 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 nsIDocument_h___
#define nsIDocument_h___
#include "mozilla/FlushType.h" // for enum
#include "nsAutoPtr.h" // for member
#include "nsCOMArray.h" // for member
#include "nsCompatibility.h" // for member
#include "nsCOMPtr.h" // for member
#include "nsGkAtoms.h" // for static class members
#include "nsIDocumentObserver.h" // for typedef (nsUpdateType)
#include "nsILoadGroup.h" // for member (in nsCOMPtr)
#include "nsINode.h" // for base class
#include "nsIParser.h"
#include "nsIScriptGlobalObject.h" // for member (in nsCOMPtr)
#include "nsIServiceManager.h"
#include "nsIUUIDGenerator.h"
#include "nsPIDOMWindow.h" // for use in inline functions
#include "nsPropertyTable.h" // for member
#include "nsDataHashtable.h" // for member
#include "nsURIHashKey.h" // for member
#include "mozilla/net/ReferrerPolicy.h" // for member
#include "nsWeakReference.h"
#include "mozilla/UseCounter.h"
#include "mozilla/WeakPtr.h"
#include "Units.h"
#include "nsContentListDeclarations.h"
#include "nsExpirationTracker.h"
#include "nsClassHashtable.h"
#include "mozilla/CORSMode.h"
#include "mozilla/dom/DispatcherTrait.h"
#include "mozilla/LinkedList.h"
#include "mozilla/SegmentedVector.h"
#include "mozilla/StyleBackendType.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/UniquePtr.h"
#include <bitset> // for member
#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 gfxUserFontSet;
class imgIRequest;
class nsAString;
class nsBindingManager;
class nsIDocShell;
class nsDocShell;
class nsDOMNavigationTiming;
class nsFrameLoader;
class nsHTMLCSSStyleSheet;
class nsHTMLDocument;
class nsHTMLStyleSheet;
class nsIAtom;
class nsIBFCacheEntry;
class nsIChannel;
class nsIContent;
class nsIContentSink;
class nsIDocShell;
class nsIDocShellTreeItem;
class nsIDocumentEncoder;
class nsIDocumentObserver;
class nsIDOMDocument;
class nsIDOMDocumentType;
class nsIDOMElement;
class nsIDOMNodeFilter;
class nsIDOMNodeList;
class nsIHTMLCollection;
class nsILayoutHistoryState;
class nsILoadContext;
class nsIObjectLoadingContent;
class nsIObserver;
class nsIPresShell;
class nsIPrincipal;
class nsIRequest;
class nsIRunnable;
class nsIStreamListener;
class nsIStructuredCloneContainer;
class nsIURI;
class nsIVariant;
class nsViewManager;
class nsPresContext;
class nsRange;
class nsSMILAnimationController;
class nsSVGElement;
class nsTextNode;
class nsWindowSizes;
class nsDOMCaretPosition;
class nsViewportInfo;
class nsIGlobalObject;
struct nsCSSSelectorList;
namespace mozilla {
class AbstractThread;
class CSSStyleSheet;
class ErrorResult;
class EventStates;
class PendingAnimationTracker;
class StyleSetHandle;
template<typename> class OwningNonNull;
struct URLExtraData;
namespace css {
class Loader;
class ImageLoader;
class Rule;
} // namespace css
namespace dom {
class Animation;
class AnonymousContent;
class Attr;
class BoxObject;
class CDATASection;
class Comment;
struct CustomElementDefinition;
class DocGroup;
class DocumentFragment;
class DocumentTimeline;
class DocumentType;
class DOMImplementation;
class DOMIntersectionObserver;
class DOMStringList;
class Element;
struct ElementCreationOptions;
struct ElementRegistrationOptions;
class Event;
class EventTarget;
class FontFaceSet;
class FrameRequestCallback;
struct FullscreenRequest;
class ImageTracker;
class HTMLBodyElement;
struct LifecycleCallbackArgs;
class Link;
class Location;
class MediaQueryList;
class GlobalObject;
class NodeFilter;
class NodeIterator;
enum class OrientationType : uint8_t;
class ProcessingInstruction;
class Promise;
class ScriptLoader;
class StyleSheetList;
class SVGDocument;
class SVGSVGElement;
class Touch;
class TouchList;
class TreeWalker;
class XPathEvaluator;
class XPathExpression;
class XPathNSResolver;
class XPathResult;
template<typename> class Sequence;
template<typename, typename> class CallbackObjectHolder;
typedef CallbackObjectHolder<NodeFilter, nsIDOMNodeFilter> NodeFilterHolder;
enum class CallerType : uint32_t;
} // namespace dom
} // namespace mozilla
#define NS_IDOCUMENT_IID \
{ 0xce1f7627, 0x7109, 0x4977, \
{ 0xba, 0x77, 0x49, 0x0f, 0xfd, 0xe0, 0x7a, 0xaa } }
// 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
DocumentFlavorPlain, // Just a Document
};
// Enum for HSTS priming states
enum class HSTSPrimingState {
eNO_HSTS_PRIMING = 0, // don't do HSTS Priming
eHSTS_PRIMING_ALLOW = 1, // if HSTS priming fails, allow the load to proceed
eHSTS_PRIMING_BLOCK = 2 // if HSTS priming fails, block the load
};
// 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)
// Some function forward-declarations
class nsContentList;
//----------------------------------------------------------------------
// Document interface. This is implemented by all document objects in
// Gecko.
class nsIDocument : public nsINode,
public mozilla::dom::DispatcherTrait
{
typedef mozilla::dom::GlobalObject GlobalObject;
public:
typedef mozilla::net::ReferrerPolicy ReferrerPolicyEnum;
typedef mozilla::dom::Element Element;
typedef mozilla::dom::FullscreenRequest FullscreenRequest;
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDOCUMENT_IID)
#ifdef MOZILLA_INTERNAL_API
nsIDocument();
#endif
// This helper class must be set when we dispatch beforeunload and unload
// events in order to avoid unterminate sync XHRs.
class MOZ_RAII PageUnloadingEventTimeStamp
{
nsCOMPtr<nsIDocument> mDocument;
bool mSet;
public:
explicit PageUnloadingEventTimeStamp(nsIDocument* 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().
*/
virtual nsresult StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener **aDocListener,
bool aReset,
nsIContentSink* aSink = nullptr) = 0;
virtual void StopDocumentLoad() = 0;
virtual void SetSuppressParserErrorElement(bool aSuppress) {}
virtual bool SuppressParserErrorElement() { return false; }
virtual void SetSuppressParserErrorConsoleMessages(bool aSuppress) {}
virtual bool SuppressParserErrorConsoleMessages() { return false; }
/**
* Signal that the document title may have changed
* (see nsDocument::GetTitle).
* @param aBoundTitleElement true if an HTML or SVG <title> element
* has just been bound to the document.
*/
virtual void NotifyPossibleTitleChange(bool aBoundTitleElement) = 0;
/**
* Return the URI for the document. May 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;
}
/**
* Set the URI for the document. This also sets the document's original URI,
* if it's null.
*/
virtual void SetDocumentURI(nsIURI* aURI) = 0;
/**
* Set the URI for the document loaded via XHR, when accessed from
* chrome privileged script.
*/
virtual void SetChromeXHRDocURI(nsIURI* aURI) = 0;
/**
* Set the base URI for the document loaded via XHR, when accessed from
* chrome privileged script.
*/
virtual void SetChromeXHRDocBaseURI(nsIURI* aURI) = 0;
/**
* Set referrer policy and upgrade-insecure-requests flags
*/
virtual void ApplySettingsFromCSP(bool aSpeculative) = 0;
virtual already_AddRefed<nsIParser> CreatorParserOrNull() = 0;
/**
* Return the referrer policy of the document. Return "default" if there's no
* valid meta referrer tag found in the document.
*/
ReferrerPolicyEnum GetReferrerPolicy() const
{
return mReferrerPolicy;
}
/**
* GetReferrerPolicy() for Document.webidl.
*/
uint32_t 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 SetReferrer(const nsACString& aReferrer) {
mReferrer = aReferrer;
}
/**
* Check to see if a subresource we want to load requires HSTS priming
* to be done.
*/
HSTSPrimingState GetHSTSPrimingStateForLocation(nsIURI* aContentLocation) const
{
HSTSPrimingState state;
if (mHSTSPrimingURIList.Get(aContentLocation, &state)) {
return state;
}
return HSTSPrimingState::eNO_HSTS_PRIMING;
}
/**
* Add a subresource to the HSTS priming list. If this URI is
* not in the HSTS cache, it will trigger an HSTS priming request
* when we try to load it.
*/
void AddHSTSPrimingLocation(nsIURI* aContentLocation, HSTSPrimingState aState)
{
mHSTSPrimingURIList.Put(aContentLocation, aState);
}
void ClearHSTSPrimingLocation(nsIURI* aContentLocation)
{
mHSTSPrimingURIList.Remove(aContentLocation);
}
/**
* Set the principal responsible for this document.
*/
virtual void SetPrincipal(nsIPrincipal *aPrincipal) = 0;
/**
* 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 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();
}
virtual already_AddRefed<nsIURI> GetBaseURI(bool aTryUseXHRDocBaseURI = false) const override;
virtual void SetBaseURI(nsIURI* aURI) = 0;
/**
* 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.
*/
mozilla::URLExtraData* DefaultStyleAttrURLData();
/**
* Get/Set the base target of a link in a document.
*/
virtual void GetBaseTarget(nsAString &aBaseTarget) = 0;
void SetBaseTarget(const nsString& aBaseTarget) {
mBaseTarget = aBaseTarget;
}
/**
* Return a standard name for the document's character set.
*/
const nsCString& GetDocumentCharacterSet() const
{
return mCharacterSet;
}
/**
* Set the document's character encoding. |aCharSetID| should be canonical.
* That is, callers are responsible for the charset alias resolution.
*/
virtual void SetDocumentCharacterSet(const nsACString& aCharSetID) = 0;
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;
}
/**
* Add an observer that gets notified whenever the charset changes.
*/
virtual nsresult AddCharSetObserver(nsIObserver* aObserver) = 0;
/**
* Remove a charset observer.
*/
virtual void RemoveCharSetObserver(nsIObserver* aObserver) = 0;
/**
* This gets fired when the element that an id refers to changes.
* This fires at difficult times. It is generally not safe to do anything
* which could modify the DOM in any way. Use
* nsContentUtils::AddScriptRunner.
* @return true to keep the callback in the callback set, false
* to remove it.
*/
typedef bool (* IDTargetObserver)(Element* aOldElement,
Element* aNewelement, void* aData);
/**
* Add an IDTargetObserver for a specific ID. The IDTargetObserver
* will be fired whenever the content associated with the ID changes
* in the future. If aForImage is true, mozSetImageElement can override
* what content is associated with the ID. In that case the IDTargetObserver
* will be notified at those times when the result of LookupImageElement
* changes.
* At most one (aObserver, aData, aForImage) triple can be
* registered for each ID.
* @return the content currently associated with the ID.
*/
virtual Element* AddIDTargetObserver(nsIAtom* aID, IDTargetObserver aObserver,
void* aData, bool aForImage) = 0;
/**
* Remove the (aObserver, aData, aForImage) triple for a specific ID, if
* registered.
*/
virtual void RemoveIDTargetObserver(nsIAtom* aID, IDTargetObserver aObserver,
void* aData, bool aForImage) = 0;
/**
* Get the Content-Type of this document.
* (This will always return NS_OK, but has this signature to be compatible
* with nsIDOMDocument::GetContentType())
*/
NS_IMETHOD GetContentType(nsAString& aContentType) = 0;
/**
* Set the Content-Type of this document.
*/
virtual void SetContentType(const nsAString& aContentType) = 0;
/**
* 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;
}
/**
* Check if the document contains (or has contained) any MathML elements.
*/
bool GetMathMLEnabled() const
{
return mMathMLEnabled;
}
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)
{
mIsInitialDocumentInWindow = aIsInitialDocument;
}
/**
* 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;
}
/**
* Get the has mixed active content loaded flag for this document.
*/
bool GetHasMixedActiveContentLoaded()
{
return mHasMixedActiveContentLoaded;
}
/**
* Set the has mixed active content loaded flag for this document.
*/
void SetHasMixedActiveContentLoaded(bool aHasMixedActiveContentLoaded)
{
mHasMixedActiveContentLoaded = aHasMixedActiveContentLoaded;
}
/**
* Get mixed active content blocked flag for this document.
*/
bool GetHasMixedActiveContentBlocked()
{
return mHasMixedActiveContentBlocked;
}
/**
* Set the mixed active content blocked flag for this document.
*/
void SetHasMixedActiveContentBlocked(bool aHasMixedActiveContentBlocked)
{
mHasMixedActiveContentBlocked = aHasMixedActiveContentBlocked;
}
/**
* Get the has mixed display content loaded flag for this document.
*/
bool GetHasMixedDisplayContentLoaded()
{
return mHasMixedDisplayContentLoaded;
}
/**
* Set the has mixed display content loaded flag for this document.
*/
void SetHasMixedDisplayContentLoaded(bool aHasMixedDisplayContentLoaded)
{
mHasMixedDisplayContentLoaded = aHasMixedDisplayContentLoaded;
}
/**
* Get mixed display content blocked flag for this document.
*/
bool GetHasMixedDisplayContentBlocked()
{
return mHasMixedDisplayContentBlocked;
}
/**
* Set referrer policy CSP flag for this document.
*/
void SetHasReferrerPolicyCSP(bool aHasReferrerPolicyCSP)
{
mHasReferrerPolicyCSP = aHasReferrerPolicyCSP;
}
/**
* Set the mixed display content blocked flag for this document.
*/
void SetHasMixedDisplayContentBlocked(bool aHasMixedDisplayContentBlocked)
{
mHasMixedDisplayContentBlocked = aHasMixedDisplayContentBlocked;
}
/**
* Set the mixed content object subrequest flag for this document.
*/
void SetHasMixedContentObjectSubrequest(bool aHasMixedContentObjectSubrequest)
{
mHasMixedContentObjectSubrequest = aHasMixedContentObjectSubrequest;
}
/**
* 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;
}
/**
* Get tracking content blocked flag for this document.
*/
bool GetHasTrackingContentBlocked()
{
return mHasTrackingContentBlocked;
}
/**
* Set the tracking content blocked flag for this document.
*/
void SetHasTrackingContentBlocked(bool aHasTrackingContentBlocked)
{
mHasTrackingContentBlocked = aHasTrackingContentBlocked;
}
/**
* Get tracking content loaded flag for this document.
*/
bool GetHasTrackingContentLoaded()
{
return mHasTrackingContentLoaded;
}
/**
* Set the tracking content loaded flag for this document.
*/
void SetHasTrackingContentLoaded(bool aHasTrackingContentLoaded)
{
mHasTrackingContentLoaded = aHasTrackingContentLoaded;
}
/**
* Get the sandbox flags for this document.
* @see nsSandboxFlags.h for the possible flags
*/
uint32_t GetSandboxFlags() const
{
return mSandboxFlags;
}
/**
* 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;
}
/**
* Access HTTP header data (this may also get set from other
* sources, like HTML META tags).
*/
virtual void GetHeaderData(nsIAtom* aHeaderField, nsAString& aData) const = 0;
virtual void SetHeaderData(nsIAtom* aheaderField, const nsAString& aData) = 0;
/**
* 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.
*/
virtual already_AddRefed<nsIPresShell> CreateShell(
nsPresContext* aContext,
nsViewManager* aViewManager,
mozilla::StyleSetHandle aStyleSet) = 0;
virtual void DeleteShell() = 0;
nsIPresShell* GetShell() const
{
return GetBFCacheEntry() ? nullptr : mPresShell;
}
// Instead using this method, what you probably want is
// RemoveFromBFCacheSync() as we do in MessagePort and BroadcastChannel.
void DisallowBFCaching()
{
NS_ASSERTION(!mBFCacheEntry, "We're already in the bfcache!");
mBFCacheDisallowed = true;
}
bool IsBFCachingAllowed() const
{
return !mBFCacheDisallowed;
}
void SetBFCacheEntry(nsIBFCacheEntry* aEntry)
{
NS_ASSERTION(IsBFCachingAllowed() || !aEntry,
"You should have checked!");
mBFCacheEntry = aEntry;
}
nsIBFCacheEntry* GetBFCacheEntry() const
{
return mBFCacheEntry;
}
/**
* 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.
*/
nsIDocument *GetParentDocument() const
{
return mParentDocument;
}
/**
* Set the parent document of this document.
*/
void SetParentDocument(nsIDocument* aParent)
{
mParentDocument = aParent;
if (aParent) {
mIgnoreDocGroupMismatches = aParent->mIgnoreDocGroupMismatches;
}
}
/**
* Are plugins allowed in this document ?
*/
virtual bool GetAllowPlugins () = 0;
/**
* Set the sub document for aContent to aSubDoc.
*/
virtual nsresult SetSubDocumentFor(Element* aContent,
nsIDocument* aSubDoc) = 0;
/**
* Get the sub document for aContent
*/
virtual nsIDocument *GetSubDocumentFor(nsIContent *aContent) const = 0;
/**
* Find the content node for which aDocument is a sub document.
*/
virtual Element* FindContentForSubDocument(nsIDocument* aDocument) const = 0;
/**
* Return the doctype for this document.
*/
mozilla::dom::DocumentType* GetDoctype() const;
/**
* Return the root element for this document.
*/
Element* GetRootElement() const;
/**
* 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.
*/
virtual nsViewportInfo GetViewportInfo(const mozilla::ScreenIntSize& aDisplaySize) = 0;
/**
* 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);
bool DidDocumentOpen() {
return mDidDocumentOpen;
}
already_AddRefed<mozilla::dom::AnonymousContent>
InsertAnonymousContent(mozilla::dom::Element& aElement,
mozilla::ErrorResult& aError);
void RemoveAnonymousContent(mozilla::dom::AnonymousContent& aContent,
mozilla::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<mozilla::dom::AnonymousContent>>& GetAnonymousContents() {
return mAnonymousContents;
}
static nsresult GenerateDocumentId(nsAString& aId);
nsresult GetOrCreateId(nsAString& aId);
void SetId(const nsAString& aId);
mozilla::TimeStamp GetPageUnloadingEventTimeStamp() const
{
if (!mParentDocument) {
return mPageUnloadingEventTimeStamp;
}
mozilla::TimeStamp parentTimeStamp(mParentDocument->GetPageUnloadingEventTimeStamp());
if (parentTimeStamp.IsNull()) {
return mPageUnloadingEventTimeStamp;
}
if (!mPageUnloadingEventTimeStamp ||
parentTimeStamp < mPageUnloadingEventTimeStamp) {
return parentTimeStamp;
}
return mPageUnloadingEventTimeStamp;
}
virtual void NotifyLayerManagerRecreated() = 0;
/**
* 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.
*/
virtual void ScheduleSVGForPresAttrEvaluation(nsSVGElement* aSVG) = 0;
// Unschedule an element scheduled by ScheduleFrameRequestCallback (e.g. for when it is destroyed)
virtual void UnscheduleSVGForPresAttrEvaluation(nsSVGElement* aSVG) = 0;
// Resolve all SVG pres attrs scheduled in ScheduleSVGForPresAttrEvaluation
virtual void ResolveScheduledSVGPresAttrs() = 0;
protected:
virtual Element *GetRootElementInternal() const = 0;
void SetPageUnloadingEventTimeStamp()
{
MOZ_ASSERT(!mPageUnloadingEventTimeStamp);
mPageUnloadingEventTimeStamp = mozilla::TimeStamp::NowLoRes();
}
void CleanUnloadEventsTimeStamp()
{
MOZ_ASSERT(mPageUnloadingEventTimeStamp);
mPageUnloadingEventTimeStamp = mozilla::TimeStamp();
}
private:
class SelectorCacheKey
{
public:
explicit SelectorCacheKey(const nsAString& aString) : mKey(aString)
{
MOZ_COUNT_CTOR(SelectorCacheKey);
}
nsString mKey;
nsExpirationState mState;
nsExpirationState* GetExpirationState() { return &mState; }
~SelectorCacheKey()
{
MOZ_COUNT_DTOR(SelectorCacheKey);
}
};
class SelectorCacheKeyDeleter;
public:
class SelectorCache final
: public nsExpirationTracker<SelectorCacheKey, 4>
{
public:
explicit SelectorCache(nsIEventTarget* aEventTarget);
// CacheList takes ownership of aSelectorList.
void CacheList(const nsAString& aSelector, nsCSSSelectorList* aSelectorList);
virtual void NotifyExpired(SelectorCacheKey* aSelector) override;
// 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 *aList is null, that indicates that aSelector
// has already been parsed and is not a syntactically valid selector.
bool GetList(const nsAString& aSelector, nsCSSSelectorList** aList)
{
return mTable.Get(aSelector, aList);
}
~SelectorCache();
private:
nsClassHashtable<nsStringHashKey, nsCSSSelectorList> mTable;
};
SelectorCache& GetSelectorCache() {
if (!mSelectorCache) {
mSelectorCache =
new SelectorCache(EventTargetFor(mozilla::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(nsIAtom* 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)
mozilla::dom::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);
}
/**
* Accessors to the collection of stylesheets owned by this document.
* Style sheets are ordered, most significant last.
*/
/**
* These exists to allow us to on-demand load user-agent style sheets that
* would otherwise be loaded by nsDocumentViewer::CreateStyleSet. This allows
* us to keep the memory used by a document's rule cascade data (the stuff in
* its nsStyleSet's nsCSSRuleProcessors) - which can be considerable - lower
* than it would be if we loaded all built-in user-agent style sheets up
* front.
*
* By "built-in" user-agent style sheets we mean the user-agent style sheets
* that gecko itself supplies (such as html.css and svg.css) as opposed to
* user-agent level style sheets inserted by add-ons or the like.
*
* This function prepends the given style sheet to the document's style set
* in order to make sure that it does not override user-agent style sheets
* supplied by add-ons or by the app (Firefox OS or Firefox Mobile, for
* example), since their sheets should override built-in sheets.
*
* TODO We can get rid of the whole concept of delayed loading if we fix
* bug 77999.
*/
virtual void EnsureOnDemandBuiltInUASheet(mozilla::StyleSheet* aSheet) = 0;
/**
* Get the number of (document) stylesheets
*
* @return the number of stylesheets
* @throws no exceptions
*/
virtual int32_t GetNumberOfStyleSheets() const = 0;
/**
* Get a particular stylesheet
* @param aIndex the index the stylesheet lives at. This is zero-based
* @return the stylesheet at aIndex. Null if aIndex is out of range.
* @throws no exceptions
*/
virtual mozilla::StyleSheet* GetStyleSheetAt(int32_t aIndex) const = 0;
/**
* Insert a sheet at a particular spot in the stylesheet list (zero-based)
* @param aSheet the sheet to insert
* @param aIndex the index to insert at. This index will be
* adjusted for the "special" sheets.
* @throws no exceptions
*/
virtual void InsertStyleSheetAt(mozilla::StyleSheet* aSheet,
int32_t aIndex) = 0;
/**
* Get the index of a particular stylesheet. This will _always_
* consider the "special" sheets as part of the sheet list.
* @param aSheet the sheet to get the index of
* @return aIndex the index of the sheet in the full list
*/
virtual int32_t GetIndexOfStyleSheet(
const mozilla::StyleSheet* aSheet) const = 0;
/**
* Replace the stylesheets in aOldSheets with the stylesheets in
* aNewSheets. The two lists must have equal length, and the sheet
* at positon J in the first list will be replaced by the sheet at
* position J in the second list. Some sheets in the second list
* may be null; if so the corresponding sheets in the first list
* will simply be removed.
*/
virtual void UpdateStyleSheets(
nsTArray<RefPtr<mozilla::StyleSheet>>& aOldSheets,
nsTArray<RefPtr<mozilla::StyleSheet>>& aNewSheets) = 0;
/**
* Add a stylesheet to the document
*/
virtual void AddStyleSheet(mozilla::StyleSheet* aSheet) = 0;
/**
* Remove a stylesheet from the document
*/
virtual void RemoveStyleSheet(mozilla::StyleSheet* aSheet) = 0;
/**
* Notify the document that the applicable state of the sheet changed
* and that observers should be notified and style sets updated
*/
virtual void SetStyleSheetApplicableState(mozilla::StyleSheet* aSheet,
bool aApplicable) = 0;
enum additionalSheetType {
eAgentSheet,
eUserSheet,
eAuthorSheet,
AdditionalSheetTypeCount
};
virtual nsresult LoadAdditionalStyleSheet(additionalSheetType aType,
nsIURI* aSheetURI) = 0;
virtual nsresult AddAdditionalStyleSheet(additionalSheetType aType,
mozilla::StyleSheet* aSheet) = 0;
virtual void RemoveAdditionalStyleSheet(additionalSheetType aType,
nsIURI* sheetURI) = 0;
virtual mozilla::StyleSheet* GetFirstAdditionalAuthorSheet() = 0;
/**
* Assuming that aDocSheets is an array of document-level style
* sheets for this document, returns the index that aSheet should
* be inserted at to maintain document ordering.
*
* Type T has to cast to StyleSheet*.
*
* Defined in nsIDocumentInlines.h.
*/
template<typename T>
size_t FindDocStyleSheetInsertionPoint(const nsTArray<T>& aDocSheets,
mozilla::StyleSheet* aSheet);
/**
* Get this document's CSSLoader. This is guaranteed to not return null.
*/
mozilla::css::Loader* CSSLoader() const {
return mCSSLoader;
}
mozilla::StyleBackendType GetStyleBackendType() const {
if (mStyleBackendType == mozilla::StyleBackendType::None) {
const_cast<nsIDocument*>(this)->UpdateStyleBackendType();
}
MOZ_ASSERT(mStyleBackendType != mozilla::StyleBackendType::None);
return mStyleBackendType;
}
/**
* Documents generally decide their style backend type themselves, and
* this is only used for XBL documents to set their style backend type to
* their bounding document's.
*/
void SetStyleBackendType(mozilla::StyleBackendType aStyleBackendType) {
// We cannot assert mStyleBackendType == mozilla::StyleBackendType::None
// because NS_NewXBLDocument() might result GetStyleBackendType() being
// called.
MOZ_ASSERT(aStyleBackendType != mozilla::StyleBackendType::None,
"The StyleBackendType should be set to either Gecko or Servo!");
mStyleBackendType = aStyleBackendType;
}
/**
* Decide this document's own style backend type.
*/
void UpdateStyleBackendType();
bool IsStyledByServo() const {
return GetStyleBackendType() == mozilla::StyleBackendType::Servo;
}
/**
* Get this document's StyleImageLoader. This is guaranteed to not return null.
*/
mozilla::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)
*/
virtual nsIChannel* GetChannel() const = 0;
/**
* 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) = 0;
/**
* 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();
}
virtual void SetScriptHandlingObject(nsIScriptGlobalObject* aScriptObject) = 0;
/**
* 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.
*/
virtual nsIGlobalObject* GetScopeObject() const = 0;
virtual void SetScopeObject(nsIGlobalObject* aGlobal) = 0;
/**
* 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;
}
/**
* Get the script loader for this document
*/
virtual mozilla::dom::ScriptLoader* ScriptLoader() = 0;
/**
* Add/Remove an element to the document's id and name hashes
*/
virtual void AddToIdTable(Element* aElement, nsIAtom* aId) = 0;
virtual void RemoveFromIdTable(Element* aElement, nsIAtom* aId) = 0;
virtual void AddToNameTable(Element* aElement, nsIAtom* aName) = 0;
virtual void RemoveFromNameTable(Element* aElement, nsIAtom* aName) = 0;
/**
* Returns all elements in the fullscreen stack in the insertion order.
*/
virtual nsTArray<Element*> GetFullscreenStack() const = 0;
/**
* 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 fullscreen element stack, 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.
*/
virtual void AsyncRequestFullScreen(
mozilla::UniquePtr<FullscreenRequest>&& aRequest) = 0;
/**
* 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.
*/
virtual nsresult
RemoteFrameFullscreenChanged(nsIDOMElement* aFrameElement) = 0;
/**
* Called when a frame in a remote child document has rolled back fullscreen
* so that all its fullscreen element stacks 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.
*/
virtual nsresult RemoteFrameFullscreenReverted() = 0;
/**
* Restores the previous full-screen element to full-screen status. If there
* is no former full-screen element, this exits full-screen, moving the
* top-level browser window out of full-screen mode.
*/
virtual void RestorePreviousFullScreenState() = 0;
/**
* Returns true if this document is a fullscreen leaf document, i.e. it
* is in fullscreen mode and has no fullscreen children.
*/
virtual bool IsFullscreenLeaf() = 0;
/**
* 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.
*/
virtual nsIDocument* GetFullscreenRoot() = 0;
/**
* Sets the fullscreen root to aRoot. This stores a weak reference to aRoot
* in this document.
*/
virtual void SetFullscreenRoot(nsIDocument* aRoot) = 0;
/**
* 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(nsIDocument* 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(nsIDocument* aDocument);
/**
* Handles any pending fullscreen in aDocument or its subdocuments.
*
* Returns whether there is any fullscreen request handled.
*/
static bool HandlePendingFullscreenRequests(nsIDocument* aDocument);
/**
* Dispatch fullscreenerror event and report the failure message to
* the console.
*/
void DispatchFullscreenError(const char* aMessage);
virtual void RequestPointerLock(Element* aElement,
mozilla::dom::CallerType aCallerType) = 0;
static void UnlockPointer(nsIDocument* aDoc = nullptr);
// ScreenOrientation related APIs
virtual void SetCurrentOrientation(mozilla::dom::OrientationType aType,
uint16_t aAngle) = 0;
virtual uint16_t CurrentOrientationAngle() const = 0;
virtual mozilla::dom::OrientationType CurrentOrientationType() const = 0;
virtual void SetOrientationPendingPromise(mozilla::dom::Promise* aPromise) = 0;
virtual mozilla::dom::Promise* GetOrientationPendingPromise() const = 0;
//----------------------------------------------------------------------
// 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.
*/
virtual void AddObserver(nsIDocumentObserver* aObserver) = 0;
/**
* Remove an observer of document change notifications. This will
* return false if the observer cannot be found.
*/
virtual bool RemoveObserver(nsIDocumentObserver* aObserver) = 0;
// 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.
virtual void BeginUpdate(nsUpdateType aUpdateType) = 0;
virtual void EndUpdate(nsUpdateType aUpdateType) = 0;
virtual void BeginLoad() = 0;
virtual void EndLoad() = 0;
enum ReadyState { READYSTATE_UNINITIALIZED = 0, READYSTATE_LOADING = 1, READYSTATE_INTERACTIVE = 3, READYSTATE_COMPLETE = 4};
virtual void SetReadyStateInternal(ReadyState rs) = 0;
ReadyState GetReadyStateEnum()
{
return mReadyState;
}
// notify that a content node changed state. This must happen under
// a scriptblocker but NOT within a begin/end update.
virtual void ContentStateChanged(nsIContent* aContent,
mozilla::EventStates aStateMask) = 0;
// Notify that a document state has changed.
// This should only be called by callers whose state is also reflected in the
// implementation of nsDocument::GetDocumentState.
virtual void DocumentStatesChanged(mozilla::EventStates aStateMask) = 0;
// Observation hooks for style data to propagate notifications
// to document observers
virtual void StyleRuleChanged(mozilla::StyleSheet* aStyleSheet,
mozilla::css::Rule* aStyleRule) = 0;
virtual void StyleRuleAdded(mozilla::StyleSheet* aStyleSheet,
mozilla::css::Rule* aStyleRule) = 0;
virtual void StyleRuleRemoved(mozilla::StyleSheet* aStyleSheet,
mozilla::css::Rule* aStyleRule) = 0;
/**
* Flush notifications for this document and its parent documents
* (since those may affect the layout of this one).
*/
virtual void FlushPendingNotifications(mozilla::FlushType aType) = 0;
/**
* 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.
*/
virtual void FlushExternalResources(mozilla::FlushType aType) = 0;
nsBindingManager* BindingManager() const
{
return mNodeInfoManager->GetBindingManager();
}
/**
* 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) = 0;
/**
* Reset this document to aURI, aLoadGroup, and aPrincipal. aURI must not be
* null. If aPrincipal is null, a codebase principal based on aURI will be
* used.
*/
virtual void ResetToURI(nsIURI *aURI, nsILoadGroup* aLoadGroup,
nsIPrincipal* aPrincipal) = 0;
/**
* 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.
*/
virtual 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.
*/
virtual void SetXMLDeclaration(const char16_t *aVersion,
const char16_t *aEncoding,
const int32_t aStandalone) = 0;
virtual void GetXMLDeclaration(nsAString& aVersion,
nsAString& aEncoding,
nsAString& Standalone) = 0;
/**
* 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 IsXULDocument() const
{
return mType == eXUL;
}
bool IsUnstyledDocument()
{
return IsLoadedAsData() || IsLoadedAsInteractiveData();
}
bool LoadsFullXULStyleSheetUpFront()
{
return IsXULDocument() || AllowXULXBL();
}
virtual bool IsScriptEnabled() = 0;
bool IsTopLevelContentDocument() const { return mIsTopLevelContentDocument; }
void SetIsTopLevelContentDocument(bool aIsTopLevelContentDocument)
{
mIsTopLevelContentDocument = aIsTopLevelContentDocument;
}
bool IsContentDocument() const { return mIsContentDocument; }
void SetIsContentDocument(bool aIsContentDocument)
{
mIsContentDocument = aIsContentDocument;
}
/**
* Create an element with the specified name, prefix and namespace ID.
* Returns null if element name parsing failed.
*/
virtual already_AddRefed<Element> CreateElem(const nsAString& aName,
nsIAtom* aPrefix,
int32_t aNamespaceID,
const nsAString* aIs = nullptr) = 0;
/**
* 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.
*/
virtual nsIChannel* GetFailedChannel() const = 0;
/**
* Set the channel that failed to load and resulted in an error page.
* This is only relevant to error pages.
*/
virtual void SetFailedChannel(nsIChannel* aChannel) = 0;
/**
* Returns the default namespace ID used for elements created in this
* document.
*/
int32_t GetDefaultNamespaceID() const
{
return mDefaultElementType;
}
void DeleteAllProperties();
void DeleteAllPropertiesFor(nsINode* aNode);
nsPropertyTable* PropertyTable(uint16_t aCategory) {
if (aCategory == 0)
return &mPropertyTable;
return GetExtraPropertyTable(aCategory);
}
uint32_t GetPropertyTableCount()
{ return mExtraPropertyTables.Length() + 1; }
/**
* 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.
*/
virtual void Sanitize() = 0;
/**
* Enumerate all subdocuments.
* The enumerator callback should return true to continue enumerating, or
* false to stop. This will never get passed a null aDocument.
*/
typedef bool (*nsSubDocEnumFunc)(nsIDocument *aDocument, void *aData);
virtual void EnumerateSubDocuments(nsSubDocEnumFunc aCallback,
void *aData) = 0;
/**
* Check whether it is safe to cache the presentation of this document
* and all of its subdocuments. 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.
*/
virtual bool CanSavePresentation(nsIRequest *aNewRequest) = 0;
/**
* 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() = 0;
/**
* 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.
*/
virtual void RemovedFromDocShell() = 0;
/**
* 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.
*/
virtual already_AddRefed<nsILayoutHistoryState> GetLayoutHistoryState() const = 0;
/**
* 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).
*/
virtual void BlockOnload() = 0;
/**
* @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.
*/
virtual void UnblockOnload(bool aFireSync) = 0;
void BlockDOMContentLoaded()
{
++mBlockDOMContentLoaded;
}
virtual void UnblockDOMContentLoaded() = 0;
/**
* 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.
* Note: if aDispatchStartTarget isn't null, the showing state of the
* document won't be altered.
*/
virtual void OnPageShow(bool aPersisted,
mozilla::dom::EventTarget* aDispatchStartTarget) = 0;
/**
* 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.
* Note: if aDispatchStartTarget isn't null, the showing state of the
* document won't be altered.
*/
virtual void OnPageHide(bool aPersisted,
mozilla::dom::EventTarget* aDispatchStartTarget) = 0;
/*
* 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.
*/
virtual void AddStyleRelevantLink(mozilla::dom::Link* aLink) = 0;
/**
* 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.
*/
virtual void ForgetLink(mozilla::dom::Link* aLink) = 0;
/**
* Resets and removes a box object from the document's box object cache
*
* @param aElement canonical nsIContent pointer of the box object's element
*/
virtual void ClearBoxObjectFor(nsIContent *aContent) = 0;
/**
* Get the box object for an element. This is not exposed through a
* scriptable interface except for XUL documents.
*/
virtual already_AddRefed<mozilla::dom::BoxObject>
GetBoxObjectFor(mozilla::dom::Element* aElement,
mozilla::ErrorResult& aRv) = 0;
/**
* Support for window.matchMedia()
*/
already_AddRefed<mozilla::dom::MediaQueryList>
MatchMedia(const nsAString& aMediaQueryList);
mozilla::LinkedList<mozilla::dom::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;
}
/**
* See GetAnonymousElementByAttribute on nsIDOMDocumentXBL.
*/
virtual Element*
GetAnonymousElementByAttribute(nsIContent* aElement,
nsIAtom* aAttrName,
const nsAString& aAttrValue) const = 0;
/**
* Helper for nsIDOMDocument::elementFromPoint implementation that allows
* ignoring the scroll frame and/or avoiding layout flushes.
*
* @see nsIDOMWindowUtils::elementFromPoint
*/
virtual Element* ElementFromPointHelper(float aX, float aY,
bool aIgnoreRootScrollFrame,
bool aFlushLayout) = 0;
enum ElementsFromPointFlags {
IGNORE_ROOT_SCROLL_FRAME = 1,
FLUSH_LAYOUT = 2,
IS_ELEMENT_FROM_POINT = 4
};
virtual void ElementsFromPointHelper(float aX, float aY,
uint32_t aFlags,
nsTArray<RefPtr<mozilla::dom::Element>>& aElements) = 0;
virtual nsresult NodesFromRectHelper(float aX, float aY,
float aTopSize, float aRightSize,
float aBottomSize, float aLeftSize,
bool aIgnoreRootScrollFrame,
bool aFlushLayout,
nsIDOMNodeList** aReturn) = 0;
/**
* See FlushSkinBindings on nsBindingManager
*/
virtual void FlushSkinBindings() = 0;
/**
* 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;
}
bool IsLoadedAsData()
{
return mLoadedAsData;
}
bool IsLoadedAsInteractiveData()
{
return mLoadedAsInteractiveData;
}
bool MayStartLayout()
{
return mMayStartLayout;
}
virtual void SetMayStartLayout(bool aMayStartLayout)
{
mMayStartLayout = aMayStartLayout;
}
already_AddRefed<nsIDocumentEncoder> GetCachedEncoder();
void SetCachedEncoder(already_AddRefed<nsIDocumentEncoder> aEncoder);
// In case of failure, the document really can't initialize the frame loader.
virtual nsresult InitializeFrameLoader(nsFrameLoader* aLoader) = 0;
// In case of failure, the caller must handle the error, for example by
// finalizing frame loader asynchronously.
virtual nsresult FinalizeFrameLoader(nsFrameLoader* aLoader, nsIRunnable* aFinalizer) = 0;
// Removes the frame loader of aShell from the initialization list.
virtual void TryCancelFrameLoaderInitialization(nsIDocShell* aShell) = 0;
/**
* Check whether this document is a root document that is not an
* external resource.
*/
bool IsRootDisplayDocument() const
{
return !mParentDocument && !mDisplayDocument;
}
bool IsBeingUsedAsImage() const {
return mIsBeingUsedAsImage;
}
void SetIsBeingUsedAsImage() {
mIsBeingUsedAsImage = 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.
*/
nsIDocument* GetDisplayDocument() const
{
return mDisplayDocument;
}
/**
* Set the display document for this document. aDisplayDocument must not be
* null.
*/
void SetDisplayDocument(nsIDocument* aDisplayDocument)
{
MOZ_ASSERT(!GetShell() &&
!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;
}
/**
* 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() {}
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;
};
/**
* 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 aRequestingNode the node making the request
* @param aPendingLoad the pending load for this request, if any
*/
virtual nsIDocument*
RequestExternalResource(nsIURI* aURI,
nsINode* aRequestingNode,
ExternalResourceLoad** aPendingLoad) = 0;
/**
* Enumerate the external resource documents associated with this document.
* The enumerator callback should return true to continue enumerating, or
* false to stop. This callback will never get passed a null aDocument.
*/
virtual void EnumerateExternalResources(nsSubDocEnumFunc aCallback,
void* aData) = 0;
/**
* 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; }
/**
* Return whether the document and all its ancestors are visible in the sense of
* pageshow / hide.
*/
bool IsVisibleConsideringAncestors() const;
/**
* 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;
}
/**
* 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.
typedef void (* ActivityObserverEnumerator)(nsISupports*, void*);
void EnumerateActivityObservers(ActivityObserverEnumerator aEnumerator,
void* aData);
// 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.
virtual nsSMILAnimationController* GetAnimationController() = 0;
// 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.
virtual mozilla::PendingAnimationTracker* GetPendingAnimationTracker() = 0;
// 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.
virtual mozilla::PendingAnimationTracker*
GetOrCreatePendingAnimationTracker() = 0;
/**
* Prevents user initiated events from being dispatched to the document and
* subdocuments.
*/
virtual void SuppressEventHandling(uint32_t aIncrease = 1) = 0;
/**
* Unsuppress event handling.
* @param aFireEvents If true, delayed events (focus/blur) will be fired
* asynchronously.
*/
virtual void UnsuppressEventHandlingAndFireEvents(bool aFireEvents) = 0;
uint32_t EventHandlingSuppressed() const { return mEventsSuppressed; }
bool IsEventHandlingEnabled() {
return !EventHandlingSuppressed() && mScriptGlobalObject;
}
/**
* Increment the number of external scripts being evaluated.
*/
void BeginEvaluatingExternalScript() { ++mExternalScriptsBeingEvaluated; }
/**
* Decrement the number of external scripts being evaluated.
*/
void EndEvaluatingExternalScript() { --mExternalScriptsBeingEvaluated; }
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();
}
void ForceEnableXULXBL() {
mAllowXULXBL = eTriTrue;
}
/**
* Returns the template content owner document that owns the content of
* HTMLTemplateElement.
*/
virtual nsIDocument* GetTemplateContentsOwner() = 0;
/**
* 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() { 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.
*/
virtual already_AddRefed<nsIDocument>
CreateStaticClone(nsIDocShell* aCloneContainer);
/**
* If this document is a static clone, this returns the original
* document.
*/
nsIDocument* GetOriginalDocument()
{
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.
*/
virtual void PreloadPictureOpened() = 0;
virtual void PreloadPictureClosed() = 0;
virtual void PreloadPictureImageSource(const nsAString& aSrcsetAttr,
const nsAString& aSizesAttr,
const nsAString& aTypeAttr,
const nsAString& aMediaAttr) = 0;
/**
* 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.
*/
virtual already_AddRefed<nsIURI>
ResolvePreloadImage(nsIURI *aBaseURI,
const nsAString& aSrcAttr,
const nsAString& aSrcsetAttr,
const nsAString& aSizesAttr) = 0;
/**
* 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.
*/
virtual void MaybePreLoadImage(nsIURI* uri,
const nsAString& aCrossOriginAttr,
ReferrerPolicyEnum aReferrerPolicy) = 0;
/**
* Called by images to forget an image preload when they start doing
* the real load.
*/
virtual void ForgetImagePreload(nsIURI* aURI) = 0;
/**
* Called by nsParser to preload style sheets. Can also be merged into the
* parser if and when the parser is merged with libgklayout. aCrossOriginAttr
* should be a void string if the attr is not present.
*/
virtual void PreloadStyle(nsIURI* aURI, const nsAString& aCharset,
const nsAString& aCrossOriginAttr,
ReferrerPolicyEnum aReferrerPolicy,
const nsAString& aIntegrity) = 0;
/**
* Called by the chrome registry to load style sheets. Can be put
* back there if and when when that module is merged with libgklayout.
*
* This always does a synchronous load. If aIsAgentSheet is true,
* it also uses the system principal and enables unsafe rules.
* DO NOT USE FOR UNTRUSTED CONTENT.
*/
virtual nsresult LoadChromeSheetSync(nsIURI* aURI, bool aIsAgentSheet,
RefPtr<mozilla::StyleSheet>* aSheet) = 0;
/**
* 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.
*/
virtual bool IsDocumentRightToLeft() { return false; }
/**
* Called by Parser for link rel=preconnect
*/
virtual void MaybePreconnect(nsIURI* uri,
mozilla::CORSMode aCORSMode) = 0;
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);
/**
* 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.
*/
virtual int GetDocumentLWTheme() { return Doc_Theme_None; }
/**
* Returns the document state.
* Document state bits have the form NS_DOCUMENT_STATE_* and are declared in
* nsIDocument.h.
*/
virtual mozilla::EventStates GetDocumentState() = 0;
virtual mozilla::EventStates ThreadSafeGetDocumentState() const = 0;
virtual nsISupports* GetCurrentContentSink() = 0;
virtual void SetScrollToRef(nsIURI *aDocumentURI) = 0;
virtual void ScrollToRef() = 0;
virtual void ResetScrolledToRefAlready() = 0;
virtual void SetChangeScrollPosWhenScrollingToRef(bool aValue) = 0;
/**
* This method is similar to GetElementById() from nsIDOMDocument but it
* returns a mozilla::dom::Element instead of a nsIDOMElement.
* It prevents converting nsIDOMElement to mozilla::dom::Element which is
* already converted from mozilla::dom::Element.
*/
virtual Element* GetElementById(const nsAString& aElementId) = 0;
/**
* This method returns _all_ the elements in this document which
* have id aElementId, if there are any. Otherwise it returns null.
*/
virtual const nsTArray<Element*>* GetAllElementsForId(const nsAString& aElementId) const = 0;
/**
* Lookup an image element using its associated ID, which is usually provided
* by |-moz-element()|. Similar to GetElementById, with the difference that
* elements set using mozSetImageElement have higher priority.
* @param aId the ID associated the element we want to lookup
* @return the element associated with |aId|
*/
virtual Element* LookupImageElement(const nsAString& aElementId) = 0;
virtual mozilla::dom::DocumentTimeline* Timeline() = 0;
virtual mozilla::LinkedList<mozilla::dom::DocumentTimeline>& Timelines() = 0;
virtual void GetAnimations(
nsTArray<RefPtr<mozilla::dom::Animation>>& aAnimations) = 0;
mozilla::dom::SVGSVGElement* GetSVGRootElement() const;
nsresult ScheduleFrameRequestCallback(mozilla::dom::FrameRequestCallback& aCallback,
int32_t *aHandle);
void CancelFrameRequestCallback(int32_t aHandle);
typedef nsTArray<RefPtr<mozilla::dom::FrameRequestCallback>> FrameRequestCallbackList;
/**
* Put this document's frame request callbacks into the provided
* list, and forget about them.
*/
void TakeFrameRequestCallbacks(FrameRequestCallbackList& 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();
// This returns true when the document tree is being teared down.
bool InUnlinkOrDeletion() { return mInUnlinkOrDeletion; }
mozilla::dom::ImageTracker* ImageTracker();
virtual nsresult AddPlugin(nsIObjectLoadingContent* aPlugin) = 0;
virtual void RemovePlugin(nsIObjectLoadingContent* aPlugin) = 0;
virtual void GetPlugins(nsTArray<nsIObjectLoadingContent*>& aPlugins) = 0;
virtual nsresult AddResponsiveContent(nsIContent* aContent) = 0;
virtual void RemoveResponsiveContent(nsIContent* aContent) = 0;
virtual void NotifyMediaFeatureValuesChanged() = 0;
virtual nsresult GetStateObject(nsIVariant** aResult) = 0;
virtual nsDOMNavigationTiming* GetNavigationTiming() const = 0;
virtual nsresult SetNavigationTiming(nsDOMNavigationTiming* aTiming) = 0;
virtual Element* FindImageMap(const nsAString& aNormalizedMapName) = 0;
// Add aLink to the set of links that need their status resolved.
void RegisterPendingLinkUpdate(mozilla::dom::Link* aLink);
// Update state on links in mLinksToUpdate. This function must be called
// prior to selector matching that needs to differentiate between :link and
// :visited. In particular, it does _not_ need to be called before doing any
// selector matching that uses TreeMatchContext::eNeverMatchVisited. The only
// reason we haven't moved all calls to this function entirely inside the
// TreeMatchContext constructor is to not call it all the time during various
// style system and frame construction operations (though it would likely be a
// no-op for all but the first call).
//
// XXXbz Does this really need to be called before selector matching? All it
// will do is ensure all the links involved are registered to observe history,
// which won't synchronously change their state to :visited anyway! So
// calling this won't affect selector matching done immediately afterward, as
// far as I can tell.
void FlushPendingLinkUpdates();
void FlushPendingLinkUpdatesFromRunnable();
#define DEPRECATED_OPERATION(_op) e##_op,
enum DeprecatedOperations {
#include "nsDeprecatedOperationList.h"
eDeprecatedOperationCount
};
#undef DEPRECATED_OPERATION
bool HasWarnedAbout(DeprecatedOperations aOperation) const;
void WarnOnceAbout(DeprecatedOperations aOperation,
bool asError = false) 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 char16_t **aParams = nullptr,
uint32_t aParamsLength = 0) const;
virtual void PostVisibilityUpdateEvent() = 0;
bool IsSyntheticDocument() const { return mIsSyntheticDocument; }
// Note: nsIDocument is a sub-class of nsINode, which has a
// SizeOfExcludingThis function. However, because nsIDocument 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 nsIDocument inherits from nsINode; see the comment above the
// declaration of nsINode::SizeOfIncludingThis.
virtual void DocAddSizeOfIncludingThis(nsWindowSizes* aWindowSizes) const;
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(nsIAtom* aTag);
// WebIDL API
nsIGlobalObject* GetParentObject() const
{
return GetScopeObject();
}
static already_AddRefed<nsIDocument>
Constructor(const GlobalObject& aGlobal,
mozilla::ErrorResult& rv);
virtual mozilla::dom::DOMImplementation*
GetImplementation(mozilla::ErrorResult& rv) = 0;
MOZ_MUST_USE nsresult GetURL(nsString& retval) const;
MOZ_MUST_USE 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,
mozilla::dom::CallerType aCallerType,
mozilla::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();
}
enum ElementCallbackType {
eCreated,
eAttached,
eDetached,
eAttributeChanged
};
nsIDocument* GetTopLevelContentDocument();
virtual void
RegisterElement(JSContext* aCx, const nsAString& aName,
const mozilla::dom::ElementRegistrationOptions& aOptions,
JS::MutableHandle<JSObject*> aRetval,
mozilla::ErrorResult& rv) = 0;
virtual already_AddRefed<mozilla::dom::CustomElementRegistry>
GetCustomElementRegistry() = 0;
already_AddRefed<nsContentList>
GetElementsByTagName(const nsAString& aTagName)
{
return NS_GetContentList(this, kNameSpaceID_Unknown, aTagName);
}
already_AddRefed<nsContentList>
GetElementsByTagNameNS(const nsAString& aNamespaceURI,
const nsAString& aLocalName,
mozilla::ErrorResult& aResult);
already_AddRefed<nsContentList>
GetElementsByClassName(const nsAString& aClasses);
// GetElementById defined above
virtual already_AddRefed<Element>
CreateElement(const nsAString& aTagName,
const mozilla::dom::ElementCreationOptionsOrString& aOptions,
mozilla::ErrorResult& rv) = 0;
virtual already_AddRefed<Element>
CreateElementNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
const mozilla::dom::ElementCreationOptionsOrString& aOptions,
mozilla::ErrorResult& rv) = 0;
already_AddRefed<mozilla::dom::DocumentFragment>
CreateDocumentFragment() const;
already_AddRefed<nsTextNode> CreateTextNode(const nsAString& aData) const;
already_AddRefed<mozilla::dom::Comment>
CreateComment(const nsAString& aData) const;
already_AddRefed<mozilla::dom::ProcessingInstruction>
CreateProcessingInstruction(const nsAString& target, const nsAString& data,
mozilla::ErrorResult& rv) const;
already_AddRefed<nsINode>
ImportNode(nsINode& aNode, bool aDeep, mozilla::ErrorResult& rv) const;
nsINode* AdoptNode(nsINode& aNode, mozilla::ErrorResult& rv);
already_AddRefed<mozilla::dom::Event>
CreateEvent(const nsAString& aEventType,
mozilla::dom::CallerType aCallerType,
mozilla::ErrorResult& rv) const;
already_AddRefed<nsRange> CreateRange(mozilla::ErrorResult& rv);
already_AddRefed<mozilla::dom::NodeIterator>
CreateNodeIterator(nsINode& aRoot, uint32_t aWhatToShow,
mozilla::dom::NodeFilter* aFilter,
mozilla::ErrorResult& rv) const;
already_AddRefed<mozilla::dom::NodeIterator>
CreateNodeIterator(nsINode& aRoot, uint32_t aWhatToShow,
mozilla::dom::NodeFilterHolder aFilter,
mozilla::ErrorResult& rv) const;
already_AddRefed<mozilla::dom::TreeWalker>
CreateTreeWalker(nsINode& aRoot, uint32_t aWhatToShow,
mozilla::dom::NodeFilter* aFilter, mozilla::ErrorResult& rv) const;
already_AddRefed<mozilla::dom::TreeWalker>
CreateTreeWalker(nsINode& aRoot, uint32_t aWhatToShow,
mozilla::dom::NodeFilterHolder aFilter,
mozilla::ErrorResult& rv) const;
// Deprecated WebIDL bits
already_AddRefed<mozilla::dom::CDATASection>
CreateCDATASection(const nsAString& aData, mozilla::ErrorResult& rv);
already_AddRefed<mozilla::dom::Attr>
CreateAttribute(const nsAString& aName, mozilla::ErrorResult& rv);
already_AddRefed<mozilla::dom::Attr>
CreateAttributeNS(const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
mozilla::ErrorResult& rv);
void GetInputEncoding(nsAString& aInputEncoding) const;
already_AddRefed<mozilla::dom::Location> GetLocation() const;
void GetReferrer(nsAString& aReferrer) const;
void GetLastModified(nsAString& aLastModified) const;
void GetReadyState(nsAString& aReadyState) const;
// Not const because otherwise the compiler can't figure out whether to call
// this GetTitle or the nsAString version from non-const methods, since
// neither is an exact match.
virtual void GetTitle(nsString& aTitle) = 0;
virtual void SetTitle(const nsAString& aTitle, mozilla::ErrorResult& rv) = 0;
void GetDir(nsAString& aDirection) const;
void SetDir(const nsAString& aDirection);
nsPIDOMWindowOuter* GetDefaultView() const
{
return GetWindow();
}
Element* GetActiveElement();
bool HasFocus(mozilla::ErrorResult& rv) const;
mozilla::TimeStamp LastFocusTime() const;
void SetLastFocusTime(const mozilla::TimeStamp& aFocusTime);
// Event handlers are all on nsINode already
bool MozSyntheticDocument() const
{
return IsSyntheticDocument();
}
Element* GetCurrentScript();
void ReleaseCapture() const;
virtual void MozSetImageElement(const nsAString& aImageElementId,
Element* aElement) = 0;
nsIURI* GetDocumentURIObject() const;
// Not const because all the full-screen goop is not const
virtual bool FullscreenEnabled(mozilla::dom::CallerType aCallerType) = 0;
virtual Element* GetFullscreenElement() = 0;
bool Fullscreen()
{
return !!GetFullscreenElement();
}
void ExitFullscreen();
Element* GetPointerLockElement();
void ExitPointerLock()
{
UnlockPointer(this);
}
#ifdef MOZILLA_INTERNAL_API
bool Hidden() const
{
return mVisibilityState != mozilla::dom::VisibilityState::Visible;
}
mozilla::dom::VisibilityState VisibilityState() const
{
return mVisibilityState;
}
#endif
virtual mozilla::dom::StyleSheetList* StyleSheets() = 0;
void GetSelectedStyleSheetSet(nsAString& aSheetSet);
virtual void SetSelectedStyleSheetSet(const nsAString& aSheetSet) = 0;
virtual void GetLastStyleSheetSet(nsString& aSheetSet) = 0;
void GetPreferredStyleSheetSet(nsAString& aSheetSet);
virtual mozilla::dom::DOMStringList* StyleSheetSets() = 0;
virtual void EnableStyleSheetsForSet(const nsAString& aSheetSet) = 0;
Element* ElementFromPoint(float aX, float aY);
void ElementsFromPoint(float aX,
float aY,
nsTArray<RefPtr<mozilla::dom::Element>>& aElements);
/**
* 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
nsINodeList* GetAnonymousNodes(Element& aElement);
Element* GetAnonymousElementByAttribute(Element& aElement,
const nsAString& aAttrName,
const nsAString& aAttrValue);
Element* GetBindingParent(nsINode& aNode);
void LoadBindingDocument(const nsAString& aURI,
nsIPrincipal& aSubjectPrincipal,
mozilla::ErrorResult& rv);
void LoadBindingDocument(const nsAString& aURI,
const mozilla::Maybe<nsIPrincipal*>& aSubjectPrincipal,
mozilla::ErrorResult& rv);
mozilla::dom::XPathExpression*
CreateExpression(const nsAString& aExpression,
mozilla::dom::XPathNSResolver* aResolver,
mozilla::ErrorResult& rv);
nsINode* CreateNSResolver(nsINode& aNodeResolver);
already_AddRefed<mozilla::dom::XPathResult>
Evaluate(JSContext* aCx, const nsAString& aExpression, nsINode& aContextNode,
mozilla::dom::XPathNSResolver* aResolver, uint16_t aType,
JS::Handle<JSObject*> aResult, mozilla::ErrorResult& rv);
// Touch event handlers already on nsINode
already_AddRefed<mozilla::dom::Touch>
CreateTouch(nsGlobalWindow* aView, mozilla::dom::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<mozilla::dom::TouchList> CreateTouchList();
already_AddRefed<mozilla::dom::TouchList>
CreateTouchList(mozilla::dom::Touch& aTouch,
const mozilla::dom::Sequence<mozilla::OwningNonNull<mozilla::dom::Touch> >& aTouches);
already_AddRefed<mozilla::dom::TouchList>
CreateTouchList(const mozilla::dom::Sequence<mozilla::OwningNonNull<mozilla::dom::Touch> >& aTouches);
void SetStyleSheetChangeEventsEnabled(bool aValue)
{
mStyleSheetChangeEventsEnabled = aValue;
}
bool StyleSheetChangeEventsEnabled() const
{
return mStyleSheetChangeEventsEnabled;
}
void ObsoleteSheet(nsIURI *aSheetURI, mozilla::ErrorResult& rv);
void ObsoleteSheet(const nsAString& aSheetURI, mozilla::ErrorResult& rv);
already_AddRefed<mozilla::dom::Promise> BlockParsing(mozilla::dom::Promise& aPromise,
mozilla::ErrorResult& aRv);
already_AddRefed<nsIURI> GetMozDocumentURIIfNotForErrorPages();
// ParentNode
nsIHTMLCollection* Children();
uint32_t ChildElementCount();
virtual nsHTMLDocument* AsHTMLDocument() { return nullptr; }
virtual mozilla::dom::SVGDocument* AsSVGDocument() { return nullptr; }
/*
* Given a node, get a weak reference to it and append that reference to
* mBlockedTrackingNodes. Can be used later on to look up a node in it.
* (e.g., by the UI)
*/
void AddBlockedTrackingNode(nsINode *node)
{
if (!node) {
return;
}
nsWeakPtr weakNode = do_GetWeakReference(node);
if (weakNode) {
mBlockedTrackingNodes.AppendElement(weakNode);
}
}
gfxUserFontSet* GetUserFontSet(bool aFlushUserFontSet = true);
void FlushUserFontSet();
void RebuildUserFontSet(); // asynchronously
mozilla::dom::FontFaceSet* GetFonts() { return mFontFaceSet; }
// FontFaceSource
mozilla::dom::FontFaceSet* Fonts();
bool DidFireDOMContentLoaded() const { return mDidFireDOMContentLoaded; }
void SetDocumentUseCounter(mozilla::UseCounter aUseCounter)
{
if (!mUseCounters[aUseCounter]) {
mUseCounters[aUseCounter] = true;
}
}
void SetPageUseCounter(mozilla::UseCounter aUseCounter);
void SetDocumentAndPageUseCounter(mozilla::UseCounter aUseCounter)
{
SetDocumentUseCounter(aUseCounter);
SetPageUseCounter(aUseCounter);
}
void PropagateUseCounters(nsIDocument* aParentDocument);
void SetUserHasInteracted(bool aUserHasInteracted)
{
mUserHasInteracted = aUserHasInteracted;
}
bool UserHasInteracted()
{
return mUserHasInteracted;
}
bool HasScriptsBlockedBySandbox();
bool InlineScriptAllowedByCSP();
void ReportHasScrollLinkedEffect();
bool HasScrollLinkedEffect() const
{
return mHasScrollLinkedEffect;
}
mozilla::dom::DocGroup* GetDocGroup() const;
virtual void AddIntersectionObserver(
mozilla::dom::DOMIntersectionObserver* aObserver) = 0;
virtual void RemoveIntersectionObserver(
mozilla::dom::DOMIntersectionObserver* aObserver) = 0;
virtual void UpdateIntersectionObservations() = 0;
virtual void ScheduleIntersectionObserverNotification() = 0;
virtual void NotifyIntersectionObservers() = 0;
// Dispatch a runnable related to the document.
virtual nsresult Dispatch(const char* aName,
mozilla::TaskCategory aCategory,
already_AddRefed<nsIRunnable>&& aRunnable) override;
virtual nsISerialEventTarget*
EventTargetFor(mozilla::TaskCategory aCategory) const override;
virtual mozilla::AbstractThread*
AbstractMainThreadFor(mozilla::TaskCategory aCategory) override;
// The URLs passed to these functions should match what
// JS::DescribeScriptedCaller() returns, since these APIs are used to
// determine whether some code is being called from a tracking script.
void NoteScriptTrackingStatus(const nsACString& aURL, bool isTracking);
bool IsScriptTracking(const nsACString& aURL) const;
bool PrerenderHref(nsIURI* aHref);
// For more information on Flash classification, see
// toolkit/components/url-classifier/flash-block-lists.rst
virtual mozilla::dom::FlashClassification DocumentFlashClassification() = 0;
virtual bool IsThirdParty() = 0;
protected:
bool GetUseCounter(mozilla::UseCounter aUseCounter)
{
return mUseCounters[aUseCounter];
}
void SetChildDocumentUseCounter(mozilla::UseCounter aUseCounter)
{
if (!mChildDocumentUseCounters[aUseCounter]) {
mChildDocumentUseCounters[aUseCounter] = true;
}
}
bool GetChildDocumentUseCounter(mozilla::UseCounter aUseCounter)
{
return mChildDocumentUseCounters[aUseCounter];
}
private:
mutable std::bitset<eDeprecatedOperationCount> mDeprecationWarnedAbout;
mutable std::bitset<eDocumentWarningCount> mDocWarningWarnedAbout;
// Lazy-initialization to have mDocGroup initialized in prior to mSelectorCache.
nsAutoPtr<SelectorCache> mSelectorCache;
protected:
~nsIDocument();
nsPropertyTable* GetExtraPropertyTable(uint16_t aCategory);
// Never ever call this. Only call GetWindow!
virtual nsPIDOMWindowOuter* GetWindowInternal() const = 0;
// Never ever call this. Only call GetScriptHandlingObject!
virtual nsIScriptGlobalObject* GetScriptHandlingObjectInternal() const = 0;
// Never ever call this. Only call AllowXULXBL!
virtual bool InternalAllowXULXBL() = 0;
/**
* These methods should be called before and after dispatching
* a mutation event.
* To make this easy and painless, use the mozAutoSubtreeModified helper class.
*/
virtual void WillDispatchMutationEvent(nsINode* aTarget) = 0;
virtual void MutationEventDispatched(nsINode* aTarget) = 0;
friend class mozAutoSubtreeModified;
virtual Element* GetNameSpaceElement() override
{
return GetRootElement();
}
void SetContentTypeInternal(const nsACString& aType);
nsCString GetContentTypeInternal() const
{
return mContentType;
}
mozilla::dom::XPathEvaluator* XPathEvaluator();
void HandleRebuildUserFontSet() {
mPostedFlushUserFontSet = false;
FlushUserFontSet();
}
const nsString& GetId() const
{
return mId;
}
// 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(nsIPresShell* aOldShell = nullptr);
// Helper for GetScrollingElement/IsScrollingElement.
bool IsPotentiallyScrollable(mozilla::dom::HTMLBodyElement* aBody);
nsCString mReferrer;
nsString mLastModified;
nsCOMPtr<nsIURI> mDocumentURI;
nsCOMPtr<nsIURI> mOriginalURI;
nsCOMPtr<nsIURI> mChromeXHRDocURI;
nsCOMPtr<nsIURI> mDocumentBaseURI;
nsCOMPtr<nsIURI> mChromeXHRDocBaseURI;
#ifdef MOZ_STYLO
// A lazily-constructed URL data for style system to resolve URL value.
RefPtr<mozilla::URLExtraData> mCachedURLData;
#endif
nsWeakPtr mDocumentLoadGroup;
bool mReferrerPolicySet;
ReferrerPolicyEnum mReferrerPolicy;
bool mBlockAllMixedContent;
bool mBlockAllMixedContentPreloads;
bool mUpgradeInsecureRequests;
bool mUpgradeInsecurePreloads;
// if nsMixedContentBlocker requires sending an HSTS priming request,
// temporarily store that in the document so that it can be propogated to the
// LoadInfo and eventually the HTTP Channel
nsDataHashtable<nsURIHashKey, HSTSPrimingState> mHSTSPrimingURIList;
mozilla::WeakPtr<nsDocShell> mDocumentContainer;
nsCString mCharacterSet;
int32_t mCharacterSetSource;
// This is just a weak pointer; the parent document owns its children.
nsIDocument* mParentDocument;
// A reference to the element last returned from GetRootElement().
mozilla::dom::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<mozilla::css::Loader> mCSSLoader;
RefPtr<mozilla::css::ImageLoader> mStyleImageLoader;
RefPtr<nsHTMLStyleSheet> mAttrStyleSheet;
RefPtr<nsHTMLCSSStyleSheet> mStyleAttrStyleSheet;
// Tracking for images in the document.
RefPtr<mozilla::dom::ImageTracker> mImageTracker;
// The set of all object, embed, applet, video/audio elements or
// nsIObjectLoadingContent or nsIDocumentActivity 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.
nsAutoPtr<nsTHashtable<nsPtrHashKey<nsISupports> > > mActivityObservers;
// 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;
mozilla::SegmentedVector<nsCOMPtr<mozilla::dom::Link>,
kSegmentSize,
InfallibleAllocPolicy>
mLinksToUpdate;
// SMIL Animation Controller, lazily-initialized in GetAnimationController
RefPtr<nsSMILAnimationController> mAnimationController;
// Table of element properties for this document.
nsPropertyTable mPropertyTable;
nsTArray<nsAutoPtr<nsPropertyTable> > mExtraPropertyTables;
// Our cached .children collection
nsCOMPtr<nsIHTMLCollection> mChildrenCollection;
// container for per-context fonts (downloadable, SVG, etc.)
RefPtr<mozilla::dom::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.
mozilla::TimeStamp mLastFocusTime;
// True if BIDI is enabled.
bool mBidiEnabled : 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;
// This flag is only set in XMLDocument, for e.g. documents used in XBL. We
// don't want animations to play in such documents, so we need to store the
// flag here so that we can check it in nsDocument::GetAnimationController.
bool mLoadedAsInteractiveData : 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 a document load has a CSP with referrer attached.
bool mHasReferrerPolicyCSP : 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 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 is this document is synthetic : stand alone image, video, audio
// file, etc.
bool mIsSyntheticDocument : 1;
// True if this document has links whose state needs updating
bool mHasLinksToUpdate : 1;
// True is there is a pending runnable which will call FlushPendingLinkUpdates().
bool mHasLinksToUpdateRunnable : 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 has loaded Mixed Active Script (see nsMixedContentBlocker.cpp)
bool mHasMixedActiveContentLoaded : 1;
// True if a document has blocked Mixed Active Script (see nsMixedContentBlocker.cpp)
bool mHasMixedActiveContentBlocked : 1;
// True if a document has loaded Mixed Display/Passive Content (see nsMixedContentBlocker.cpp)
bool mHasMixedDisplayContentLoaded : 1;
// True if a document has blocked Mixed Display/Passive Content (see nsMixedContentBlocker.cpp)
bool mHasMixedDisplayContentBlocked : 1;
// True if a document loads a plugin object that attempts to load mixed content subresources through necko(see nsMixedContentBlocker.cpp)
bool mHasMixedContentObjectSubrequest : 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 a document has blocked Tracking Content
bool mHasTrackingContentBlocked : 1;
// True if a document has loaded Tracking Content
bool mHasTrackingContentLoaded : 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 the document was created by a srcdoc iframe.
bool mIsSrcdocDocument : 1;
// Records whether we've done a document.open. If this is true, it's possible
// for nodes from this document to have outdated wrappers in their wrapper
// caches.
bool mDidDocumentOpen : 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;
// Has GetUserFontSet() been called?
bool mGetUserFontSetCalled : 1;
// Do we currently have an event posted to call FlushUserFontSet?
bool mPostedFlushUserFontSet : 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;
// Compatibility mode
nsCompatibility mCompatMode;
// Our readyState
ReadyState mReadyState;
// Whether this document has (or will have, once we have a pres shell) a
// Gecko- or Servo-backed style system.
mozilla::StyleBackendType mStyleBackendType;
#ifdef MOZILLA_INTERNAL_API
// Our visibility state
mozilla::dom::VisibilityState mVisibilityState;
static_assert(sizeof(mozilla::dom::VisibilityState) == sizeof(uint8_t),
"Error size of mVisibilityState and mDummy");
#else
uint8_t mDummy;
#endif
enum Type {
eUnknown, // should never be used
eHTML,
eXHTML,
eGenericXML,
eSVG,
eXUL
};
Type mType;
uint8_t mDefaultElementType;
enum Tri {
eTriUnset = 0,
eTriFalse,
eTriTrue
};
Tri mAllowXULXBL;
#ifdef DEBUG
/**
* This is true while FlushPendingLinkUpdates executes. Calls to
* [Un]RegisterPendingLinkUpdate will assert when this is true.
*/
bool mIsLinkUpdateRegistrationsForbidden;
#endif
// 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.
nsCOMPtr<nsIDocument> 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;
nsCString mContentLanguage;
// The channel that got passed to nsDocument::StartDocumentLoad(), if any.
nsCOMPtr<nsIChannel> mChannel;
private:
nsCString mContentType;
nsString mId;
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;
nsIPresShell* mPresShell;
nsCOMArray<nsINode> mSubtreeModifiedTargets;
uint32_t mSubtreeModifiedDepth;
// 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.
nsCOMPtr<nsIDocument> mDisplayDocument;
uint32_t mEventsSuppressed;
/**
* The number number of external scripts (ones with the src attribute) that
* have this document as their owner and that are being evaluated right now.
*/
uint32_t mExternalScriptsBeingEvaluated;
/**
* The current frame request callback handle
*/
int32_t mFrameRequestCallbackCounter;
// Count of live static clones of this document.
uint32_t mStaticCloneCount;
// 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> mBlockedTrackingNodes;
// Weak reference to mScriptGlobalObject QI:d to nsPIDOMWindow,
// updated on every set of mScriptGlobalObject.
nsPIDOMWindowInner* mWindow;
nsCOMPtr<nsIDocumentEncoder> mCachedEncoder;
struct FrameRequest;
nsTArray<FrameRequest> mFrameRequestCallbacks;
// 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;
RefPtr<mozilla::dom::XPathEvaluator> mXPathEvaluator;
nsTArray<RefPtr<mozilla::dom::AnonymousContent>> mAnonymousContents;
uint32_t mBlockDOMContentLoaded;
// Our live MediaQueryLists
mozilla::LinkedList<mozilla::dom::MediaQueryList> mDOMMediaQueryLists;
// Flags for use counters used directly by this document.
std::bitset<mozilla::eUseCounter_Count> mUseCounters;
// Flags for use counters used by any child documents of this document.
std::bitset<mozilla::eUseCounter_Count> mChildDocumentUseCounters;
// Flags for whether we've notified our top-level "page" of a use counter
// for this child document.
std::bitset<mozilla::eUseCounter_Count> mNotifiedPageForUseCounter;
// Whether the user has interacted with the document or not:
bool mUserHasInteracted;
mozilla::TimeStamp mPageUnloadingEventTimeStamp;
RefPtr<mozilla::dom::DocGroup> mDocGroup;
// 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.
nsTHashtable<nsCStringHashKey> mTrackingScripts;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIDocument, 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(nsIDocument* aSubtreeOwner, nsINode* aTarget)
{
UpdateTarget(aSubtreeOwner, aTarget);
}
~mozAutoSubtreeModified()
{
UpdateTarget(nullptr, nullptr);
}
void UpdateTarget(nsIDocument* aSubtreeOwner, nsINode* aTarget)
{
if (mSubtreeOwner) {
mSubtreeOwner->MutationEventDispatched(mTarget);
}
mTarget = aTarget;
mSubtreeOwner = aSubtreeOwner;
if (mSubtreeOwner) {
mSubtreeOwner->WillDispatchMutationEvent(mTarget);
}
}
private:
nsCOMPtr<nsINode> mTarget;
nsCOMPtr<nsIDocument> mSubtreeOwner;
};
class MOZ_STACK_CLASS nsAutoSyncOperation
{
public:
explicit nsAutoSyncOperation(nsIDocument* aDocument);
~nsAutoSyncOperation();
private:
nsCOMArray<nsIDocument> mDocuments;
uint32_t mMicroTaskLevel;
};
// XXX These belong somewhere else
nsresult
NS_NewHTMLDocument(nsIDocument** aInstancePtrResult, bool aLoadedAsData = false);
nsresult
NS_NewXMLDocument(nsIDocument** aInstancePtrResult, bool aLoadedAsData = false,
bool aIsPlainDocument = false);
nsresult
NS_NewSVGDocument(nsIDocument** aInstancePtrResult);
nsresult
NS_NewImageDocument(nsIDocument** aInstancePtrResult);
nsresult
NS_NewVideoDocument(nsIDocument** aInstancePtrResult);
// 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(nsIDOMDocument** aInstancePtrResult,
const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
nsIDOMDocumentType* aDoctype,
nsIURI* aDocumentURI,
nsIURI* aBaseURI,
nsIPrincipal* aPrincipal,
bool aLoadedAsData,
nsIGlobalObject* aEventObject,
DocumentFlavor aFlavor);
// This is used only for xbl documents created from the startup cache.
// Non-cached documents are created in the same manner as xml documents.
nsresult
NS_NewXBLDocument(nsIDOMDocument** aInstancePtrResult,
nsIURI* aDocumentURI,
nsIURI* aBaseURI,
nsIPrincipal* aPrincipal);
nsresult
NS_NewPluginDocument(nsIDocument** aInstancePtrResult);
inline nsIDocument*
nsINode::GetOwnerDocument() const
{
nsIDocument* ownerDoc = OwnerDoc();
return ownerDoc != this ? ownerDoc : nullptr;
}
inline nsINode*
nsINode::OwnerDocAsNode() const
{
return OwnerDoc();
}
inline mozilla::dom::ParentObject
nsINode::GetParentObject() const
{
mozilla::dom::ParentObject p(OwnerDoc());
// Note that mUseXBLScope is a no-op for chrome, and other places where we
// don't use XBL scopes.
p.mUseXBLScope = IsInAnonymousSubtree() && !IsAnonymousContentInSVGUseSubtree();
return p;
}
#endif /* nsIDocument_h___ */
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку