/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 * Copyright (C) 2013-2017 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

enum PageOverlayType {
    "view",
    "document"
};

// These map to ResourceRequestCachePolicy.
enum CachePolicy {
    "UseProtocolCachePolicy",
    "ReloadIgnoringCacheData",
    "ReturnCacheDataElseLoad",
    "ReturnCacheDataDontLoad"
};

// FIXME: Strings in an enum should not have the name of the enum as a prefix.
enum ResourceLoadPriority {
    "ResourceLoadPriorityVeryLow",
    "ResourceLoadPriorityLow",
    "ResourceLoadPriorityMedium",
    "ResourceLoadPriorityHigh",
    "ResourceLoadPriorityVeryHigh"
};

[Conditional=MEDIA_SESSION] enum MediaSessionInterruptingCategory {
    "content",
    "transient",
    "transient-solo"
};

[Conditional=MEDIA_SESSION] enum MediaControlEvent {
    "play-pause",
    "next-track",
    "previous-track"
};

// FIXME: Strings in an enum should not have the name of the enum as a prefix.
enum AutoFillButtonType {
    "AutoFillButtonTypeNone",
    "AutoFillButtonTypeContacts",
    "AutoFillButtonTypeCredentials"
};

enum UserInterfaceLayoutDirection {
    "LTR",
    "RTL"
};

enum BaseWritingDirection {
    "Natural",
    "Ltr",
    "Rtl"
};

enum EventThrottlingBehavior {
    "responsive",
    "unresponsive"
};

[
    ExportMacro=WEBCORE_TESTSUPPORT_EXPORT,
    NoInterfaceObject,
] interface Internals {
    DOMString address(Node node);
    boolean nodeNeedsStyleRecalc(Node node);
    DOMString styleChangeType(Node node);
    DOMString description(any value);

    // Animated image pausing testing.
    boolean hasPausedImageAnimations(Element element);

    [MayThrowException] DOMString elementRenderTreeAsText(Element element);
    boolean isPreloaded(DOMString url);
    boolean isLoadingFromMemoryCache(DOMString url);
    DOMString xhrResponseSource(XMLHttpRequest xhr);
    boolean isSharingStyleSheetContents(HTMLLinkElement a, HTMLLinkElement b);
    boolean isStyleSheetLoadingSubresources(HTMLLinkElement link);
    void clearMemoryCache();
    void pruneMemoryCacheToSize(long size);
    void destroyDecodedDataForAllImages();
    long memoryCacheSize();
    void setOverrideCachePolicy(CachePolicy policy);
    void setOverrideResourceLoadPriority(ResourceLoadPriority priority);
    void setStrictRawResourceValidationPolicyDisabled(boolean disabled);

    void clearPageCache();
    unsigned long pageCacheSize();

    CSSStyleDeclaration computedStyleIncludingVisitedInfo(Element element);

    Node ensureUserAgentShadowRoot(Element host);
    Node shadowRoot(Element host);

    // CSS Deferred Parsing Testing.
    long deferredStyleRulesCount(StyleSheet sheet);
    long deferredGroupRulesCount(StyleSheet sheet);
    long deferredKeyframesRulesCount(StyleSheet sheet);

    [MayThrowException] DOMString shadowRootType(Node root);
    DOMString shadowPseudoId(Element element);
    void setShadowPseudoId(Element element, DOMString id);
    Node treeScopeRootNode(Node node);
    Node parentTreeScope(Node node);

    // Spatial Navigation testing
    [MayThrowException] unsigned long lastSpatialNavigationCandidateCount();

    // CSS Animation testing.
    unsigned long numberOfActiveAnimations();
    [MayThrowException] void suspendAnimations();
    [MayThrowException] void resumeAnimations();
    [MayThrowException] boolean animationsAreSuspended();
    [MayThrowException] boolean pauseAnimationAtTimeOnElement(DOMString animationName, unrestricted double pauseTime, Element element);
    [MayThrowException] boolean pauseAnimationAtTimeOnPseudoElement(DOMString animationName, unrestricted double pauseTime, Element element, DOMString pseudoId);
    readonly attribute double animationsInterval;

    // CSS Transition testing.
    [MayThrowException] boolean pauseTransitionAtTimeOnElement(DOMString propertyName, unrestricted double pauseTime, Element element);
    [MayThrowException] boolean pauseTransitionAtTimeOnPseudoElement(DOMString property, unrestricted double pauseTime, Element element, DOMString pseudoId);

    DOMString visiblePlaceholder(Element element);
    void selectColorInColorChooser(HTMLInputElement element, DOMString colorValue);
    [MayThrowException] sequence<DOMString> formControlStateOfPreviousHistoryItem();
    [MayThrowException] void setFormControlStateOfPreviousHistoryItem(sequence<DOMString> values);

    [MayThrowException] DOMRect absoluteCaretBounds();

    DOMRect boundingBox(Element element);

    [MayThrowException] DOMRectList inspectorHighlightRects();
    [MayThrowException] DOMString inspectorHighlightObject();

    [MayThrowException] unsigned long markerCountForNode(Node node, DOMString markerType);
    [MayThrowException] Range? markerRangeForNode(Node node, DOMString markerType, unsigned long index);
    [MayThrowException] DOMString markerDescriptionForNode(Node node, DOMString markerType, unsigned long index);
    [MayThrowException] DOMString dumpMarkerRects(DOMString markerType);
    void addTextMatchMarker(Range range, boolean isActive);
    [MayThrowException] void setMarkedTextMatchesAreHighlighted(boolean flag);

    void invalidateFontCache();
    void setFontSmoothingEnabled(boolean enabled);

    [MayThrowException] void setScrollViewPosition(long x, long y);

    [MayThrowException] DOMRect layoutViewportRect();
    [MayThrowException] DOMRect visualViewportRect();

    [MayThrowException] void setViewBaseBackgroundColor(DOMString colorValue);

    [MayThrowException] void setPagination(DOMString mode, long gap, optional long pageLength = 0);
    [MayThrowException] void setPaginationLineGridEnabled(boolean enabled);

    [MayThrowException] DOMString configurationForViewport(unrestricted float devicePixelRatio, long deviceWidth, long deviceHeight, long availableWidth, long availableHeight);

    [MayThrowException] boolean wasLastChangeUserEdit(Element textField);
    boolean elementShouldAutoComplete(HTMLInputElement inputElement);
    void setEditingValue(HTMLInputElement inputElement, DOMString value);
    void setAutofilled(HTMLInputElement inputElement, boolean enabled);
    void setShowAutoFillButton(HTMLInputElement inputElement, AutoFillButtonType autoFillButtonType);

    [MayThrowException] Range? rangeOfString(DOMString text, Range? referenceRange, sequence<DOMString> findOptions);
    [MayThrowException] unsigned long countMatchesForText(DOMString text, sequence<DOMString> findOptions, DOMString markMatches);
    [MayThrowException] unsigned long countFindMatches(DOMString text, sequence<DOMString> findOptions);

    [MayThrowException] DOMString autofillFieldName(Element formControlElement);

    [MayThrowException] void paintControlTints();

    [MayThrowException] void scrollElementToRect(Element element, long x, long y, long w, long h);

    Range? rangeFromLocationAndLength(Element scope, long rangeLocation, long rangeLength);
    unsigned long locationFromRange(Element scope, Range range);
    unsigned long lengthFromRange(Element scope, Range range);
    DOMString rangeAsText(Range range);
    Range subrange(Range range, long rangeLocation, long rangeLength);
    [MayThrowException] Range? rangeForDictionaryLookupAtLocation(long x, long y);
    Range? rangeOfStringNearLocation(Range range, DOMString text, long targetOffset);

    [MayThrowException] void setDelegatesScrolling(boolean enabled);

    [MayThrowException] long lastSpellCheckRequestSequence();
    [MayThrowException] long lastSpellCheckProcessedSequence();

    sequence<DOMString> userPreferredLanguages();
    void setUserPreferredLanguages(sequence<DOMString> languages);

    sequence<DOMString> userPreferredAudioCharacteristics();
    void setUserPreferredAudioCharacteristic(DOMString characteristic);

    [MayThrowException] unsigned long wheelEventHandlerCount();
    [MayThrowException] unsigned long touchEventHandlerCount();

    [MayThrowException] DOMRectList touchEventRectsForEvent(DOMString eventName);
    [MayThrowException] DOMRectList passiveTouchEventListenerRects();

    [MayThrowException] NodeList? nodesFromRect(Document document, long x, long y,
        unsigned long topPadding, unsigned long rightPadding, unsigned long bottomPadding, unsigned long leftPadding,
        boolean ignoreClipping, boolean allowShadowContent, boolean allowChildFrameContent);

    // Calling parserMetaData() with no arguments gets the metadata for the script of the current scope.
    DOMString parserMetaData(optional any func);

    void updateEditorUINowIfScheduled();

    boolean hasSpellingMarker(long from, long length);
    boolean hasGrammarMarker(long from, long length);
    boolean hasAutocorrectedMarker(long from, long length);
    void setContinuousSpellCheckingEnabled(boolean enabled);
    void setAutomaticQuoteSubstitutionEnabled(boolean enabled);
    void setAutomaticLinkDetectionEnabled(boolean enabled);
    void setAutomaticDashSubstitutionEnabled(boolean enabled);
    void setAutomaticTextReplacementEnabled(boolean enabled);
    void setAutomaticSpellingCorrectionEnabled(boolean enabled);

    void handleAcceptedCandidate(DOMString candidate, unsigned long location, unsigned long length);

    boolean isOverwriteModeEnabled();
    void toggleOverwriteModeEnabled();

    unsigned long numberOfScrollableAreas();

    [MayThrowException] boolean isPageBoxVisible(long pageNumber);

    unsigned long imageFrameIndex(HTMLImageElement element);
    void setImageFrameDecodingDuration(HTMLImageElement element, unrestricted float duration);
    void resetImageAnimation(HTMLImageElement element);
    boolean isImageAnimating(HTMLImageElement element);
    void setClearDecoderAfterAsyncFrameRequestForTesting(HTMLImageElement element, boolean enabled);
    unsigned long imageDecodeCount(HTMLImageElement element);
    void setLargeImageAsyncDecodingEnabledForTesting(HTMLImageElement element, boolean enabled);

    void setGridMaxTracksLimit(unsigned long maxTracksLimit);

    readonly attribute InternalSettings settings;
    readonly attribute unsigned long workerThreadCount;

    [MayThrowException] readonly attribute boolean areSVGAnimationsPaused;
    [MayThrowException] double svgAnimationsInterval(SVGSVGElement element);

    // Flags for layerTreeAsText.
    const unsigned short LAYER_TREE_INCLUDES_VISIBLE_RECTS = 1;
    const unsigned short LAYER_TREE_INCLUDES_TILE_CACHES = 2;
    const unsigned short LAYER_TREE_INCLUDES_REPAINT_RECTS = 4;
    const unsigned short LAYER_TREE_INCLUDES_PAINTING_PHASES = 8;
    const unsigned short LAYER_TREE_INCLUDES_CONTENT_LAYERS = 16;
    const unsigned short LAYER_TREE_INCLUDES_ACCELERATES_DRAWING = 32;
    const unsigned short LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED = 64;
    [MayThrowException] DOMString layerTreeAsText(Document document, optional unsigned short flags = 0);

    [MayThrowException] unsigned long long layerIDForElement(Element element);

    [MayThrowException] DOMString scrollingStateTreeAsText();
    [MayThrowException] DOMString mainThreadScrollingReasons(); // FIXME: rename to synchronousScrollingReasons().
    [MayThrowException] DOMRectList nonFastScrollableRects();

    [MayThrowException] DOMString repaintRectsAsText();

    // These throw if the element does not have a compositing layer.
    [MayThrowException] void setElementUsesDisplayListDrawing(Element element, boolean usesDisplayListDrawing);
    [MayThrowException] void setElementTracksDisplayListReplay(Element element, boolean trackReplay);

    // Flags for displayListForElement.
    const unsigned short DISPLAY_LIST_INCLUDES_PLATFORM_OPERATIONS = 1;
    // Returns the recorded display list.
    [MayThrowException] DOMString displayListForElement(Element element, optional unsigned short flags = 0);
    // Returns the display list that was actually painted.
    [MayThrowException] DOMString replayDisplayListForElement(Element element, optional unsigned short flags = 0);

    [MayThrowException] void garbageCollectDocumentResources();

    [MayThrowException] void insertAuthorCSS(DOMString css);
    [MayThrowException] void insertUserCSS(DOMString css);

    readonly attribute boolean isUnderMemoryPressure;
    void beginSimulatedMemoryPressure();
    void endSimulatedMemoryPressure();

    unsigned long numberOfLiveNodes();
    unsigned long numberOfLiveDocuments();
    unsigned long referencingNodeCount(Document document);
    DOMWindow? openDummyInspectorFrontend(DOMString url);
    void closeDummyInspectorFrontend();
    [MayThrowException] void setInspectorIsUnderTest(boolean isUnderTest);

    DOMString counterValue(Element element);
    long pageNumber(Element element, optional unrestricted float pageWidth = 800, optional unrestricted float pageHeight = 600);
    sequence<DOMString> shortcutIconURLs();
    long numberOfPages(optional unrestricted double pageWidthInPixels = 800, optional unrestricted double pageHeightInPixels = 600);
    [MayThrowException] DOMString pageProperty(DOMString propertyName, long pageNumber);
    [MayThrowException] DOMString pageSizeAndMarginsInPixels(long pageIndex, long width, long height, long marginTop, long marginRight, long marginBottom, long marginLeft);

    [MayThrowException] void setPageScaleFactor(unrestricted float scaleFactor, long x, long y);
    [MayThrowException] float pageScaleFactor();

    [MayThrowException] void setPageZoomFactor(unrestricted float zoomFactor);
    [MayThrowException] void setTextZoomFactor(unrestricted float zoomFactor);

    [MayThrowException] void setUseFixedLayout(boolean useFixedLayout);
    [MayThrowException] void setFixedLayoutSize(long width, long height);
    void setPrinting(long width, long height);

    [MayThrowException] void setViewExposedRect(unrestricted float x, unrestricted float y, unrestricted float width, unrestricted float height);

    void setHeaderHeight(unrestricted float height);
    void setFooterHeight(unrestricted float height);

    void setTopContentInset(unrestricted float contentInset);

    [Conditional=FULLSCREEN_API] void webkitWillEnterFullScreenForElement(Element element);
    [Conditional=FULLSCREEN_API] void webkitDidEnterFullScreenForElement(Element element);
    [Conditional=FULLSCREEN_API] void webkitWillExitFullScreenForElement(Element element);
    [Conditional=FULLSCREEN_API] void webkitDidExitFullScreenForElement(Element element);

    void setApplicationCacheOriginQuota(unsigned long long quota);

    void registerURLSchemeAsBypassingContentSecurityPolicy(DOMString scheme);
    void removeURLSchemeRegisteredAsBypassingContentSecurityPolicy(DOMString scheme);

    void registerDefaultPortForProtocol(unsigned short port, DOMString scheme);

    MallocStatistics mallocStatistics();
    TypeConversions typeConversions();
    MemoryInfo memoryInfo();

    sequence<DOMString> getReferencedFilePaths();

    // These functions both reset the tracked repaint rects. They are intended to be used in the following order:
    //  startTrackingRepaints, repaintRectsAsText, stopTrackingRepaints.
    [MayThrowException] void startTrackingRepaints();
    [MayThrowException] void stopTrackingRepaints();

    [MayThrowException] void startTrackingLayerFlushes();
    [MayThrowException] unsigned long layerFlushCount();

    // Query if a timer is currently throttled, to debug timer throttling.
    [MayThrowException] boolean isTimerThrottled(long timerHandle);

    boolean isRequestAnimationFrameThrottled();
    boolean areTimersThrottled();

    [MayThrowException] void setLowPowerModeEnabled(boolean enabled);
    readonly attribute double requestAnimationFrameInterval;
    readonly attribute boolean scriptedAnimationsAreSuspended;

    // Override the behavior of WebPage::eventThrottlingDelay(), which only affects iOS.
    attribute EventThrottlingBehavior? eventThrottlingBehaviorOverride;

    [MayThrowException] void startTrackingStyleRecalcs();
    [MayThrowException] unsigned long styleRecalcCount();
    readonly attribute unsigned long lastStyleUpdateSize;

    [MayThrowException] void startTrackingCompositingUpdates();
    [MayThrowException] unsigned long compositingUpdateCount();

    // |node| should be Document, HTMLIFrameElement, or unspecified.
    // If |node| is an HTMLIFrameElement, it assumes node.contentDocument is
    // specified without security checks. Unspecified or null means this document.
    [MayThrowException] void updateLayoutIgnorePendingStylesheetsAndRunPostLayoutTasks(optional Node? node = null);

    readonly attribute unsigned long layoutCount;

    // Returns a string with information about the mouse cursor used at the specified client location.
    [MayThrowException] DOMString getCurrentCursorInfo();

    DOMString markerTextForListItem(Element element);

    DOMString toolTipFromElement(Element element);

    SerializedScriptValue deserializeBuffer(ArrayBuffer buffer);
    ArrayBuffer serializeObject(SerializedScriptValue object);

    boolean isFromCurrentWorld(any obj);

    void setUsesOverlayScrollbars(boolean enabled);
    void setUsesMockScrollAnimator(boolean enabled);

    void forceReload(boolean endToEnd);
    void reloadExpiredOnly();

    void enableAutoSizeMode(boolean enabled, long minimumWidth, long minimumHeight, long maximumWidth, long maximumHeight);

    [Conditional=VIDEO] sequence<DOMString> mediaResponseSources(HTMLMediaElement media);
    [Conditional=VIDEO] sequence<DOMString> mediaResponseContentRanges(HTMLMediaElement media);
    [Conditional=VIDEO] void simulateAudioInterruption(HTMLMediaElement element);
    [Conditional=VIDEO, MayThrowException] boolean mediaElementHasCharacteristic(HTMLMediaElement element, DOMString characteristic);

    [Conditional=LEGACY_ENCRYPTED_MEDIA] void initializeMockCDM();
    [Conditional=ENCRYPTED_MEDIA] MockCDMFactory registerMockCDM();

    [Conditional=SPEECH_SYNTHESIS] void enableMockSpeechSynthesizer();

    DOMString getImageSourceURL(Element element);

    [Conditional=VIDEO_TRACK, MayThrowException] DOMString captionsStyleSheetOverride();
    [Conditional=VIDEO_TRACK, MayThrowException] void setCaptionsStyleSheetOverride(DOMString override);
    [Conditional=VIDEO_TRACK, MayThrowException] void setPrimaryAudioTrackLanguageOverride(DOMString language);
    [Conditional=VIDEO_TRACK, MayThrowException] void setCaptionDisplayMode(DOMString mode);

    [Conditional=VIDEO] TimeRanges createTimeRanges(Float32Array startTimes, Float32Array
     endTimes);
    [Conditional=VIDEO] unrestricted double closestTimeToTimeRanges(unrestricted double time, TimeRanges ranges);

    boolean isSelectPopupVisible(HTMLSelectElement element);

    [MayThrowException] boolean isPluginUnavailabilityIndicatorObscured(Element element);
    boolean isPluginSnapshotted(Element element);

    [MayThrowException] DOMRect selectionBounds();

    [Conditional=MEDIA_SOURCE] void initializeMockMediaSource();
    [Conditional=MEDIA_SOURCE] sequence<DOMString> bufferedSamplesForTrackID(SourceBuffer buffer, DOMString trackID);
    [Conditional=MEDIA_SOURCE] sequence<DOMString> enqueuedSamplesForTrackID(SourceBuffer buffer, DOMString trackID);
    [Conditional=MEDIA_SOURCE] void setShouldGenerateTimestamps(SourceBuffer buffer, boolean flag);

    [Conditional=VIDEO, MayThrowException] void beginMediaSessionInterruption(DOMString interruptionType);
    [Conditional=VIDEO] void endMediaSessionInterruption(DOMString flags);
    [Conditional=MEDIA_SESSION] void sendMediaSessionStartOfInterruptionNotification(MediaSessionInterruptingCategory category);
    [Conditional=MEDIA_SESSION] void sendMediaSessionEndOfInterruptionNotification(MediaSessionInterruptingCategory category);
    [Conditional=MEDIA_SESSION] DOMString mediaSessionCurrentState(MediaSession session);
    [Conditional=MEDIA_SESSION] double mediaElementPlayerVolume(HTMLMediaElement element);
    [Conditional=MEDIA_SESSION] void sendMediaControlEvent(MediaControlEvent event);
    [Conditional=VIDEO] void applicationWillBecomeInactive();
    [Conditional=VIDEO] void applicationDidBecomeActive();
    [Conditional=VIDEO] void applicationWillEnterForeground(optional boolean suspendedUnderLock = false);
    [Conditional=VIDEO] void applicationDidEnterBackground(optional boolean suspendedUnderLock = false);
    [Conditional=VIDEO, MayThrowException] void setMediaSessionRestrictions(DOMString mediaType, DOMString restrictions);
    [Conditional=VIDEO, MayThrowException] DOMString mediaSessionRestrictions(DOMString mediaType);
    [Conditional=VIDEO] void setMediaElementRestrictions(HTMLMediaElement element, DOMString restrictions);
    [Conditional=WEB_AUDIO] void setAudioContextRestrictions(AudioContext context, DOMString restrictions);
    [Conditional=VIDEO, MayThrowException] void postRemoteControlCommand(DOMString command, optional unrestricted float argument = 0);
    [Conditional=WIRELESS_PLAYBACK_TARGET] void setMockMediaPlaybackTargetPickerEnabled(boolean enabled);
    [Conditional=WIRELESS_PLAYBACK_TARGET, MayThrowException] void setMockMediaPlaybackTargetPickerState(DOMString deviceName, DOMString deviceState);
    [Conditional=MEDIA_STREAM] void setMockMediaCaptureDevicesEnabled(boolean enabled);

    [Conditional=WEB_RTC] void emulateRTCPeerConnectionPlatformEvent(RTCPeerConnection connection, DOMString action);
    [Conditional=WEB_RTC] void useMockRTCPeerConnectionFactory(DOMString testCase);
    [Conditional=WEB_RTC] void setICECandidateFiltering(boolean enabled);
    [Conditional=WEB_RTC] void setEnumeratingAllNetworkInterfacesEnabled(boolean enabled);
    [Conditional=WEB_RTC] void stopPeerConnection(RTCPeerConnection connection);

    [Conditional=VIDEO] void simulateSystemSleep();
    [Conditional=VIDEO] void simulateSystemWake();
    [Conditional=VIDEO] boolean elementIsBlockingDisplaySleep(HTMLMediaElement element);

    [MayThrowException] MockPageOverlay installMockPageOverlay(PageOverlayType type);
    [MayThrowException] DOMString pageOverlayLayerTreeAsText(optional unsigned short flags = 0);

    void setPageMuted(DOMString mutedState);
    DOMString pageMediaState();

    void setPageDefersLoading(boolean defersLoading);

    File? createFile(DOMString url);
    void queueMicroTask(long testNumber);
    boolean testPreloaderSettingViewport();

    [Conditional=CONTENT_FILTERING] readonly attribute MockContentFilterSettings mockContentFilterSettings;

    [Conditional=CSS_SCROLL_SNAP, MayThrowException] DOMString scrollSnapOffsets(Element element);
    [Conditional=CSS_SCROLL_SNAP] void setPlatformMomentumScrollingPredictionEnabled(boolean enabled);

    [MayThrowException] DOMString pathStringWithShrinkWrappedRects(sequence<double> rectComponents, double radius);

    [Conditional=VIDEO] DOMString getCurrentMediaControlsStatusForElement(HTMLMediaElement element);

    DOMString userVisibleString(DOMURL url);

    void setShowAllPlugins(boolean showAll);

    [Conditional=STREAMS_API, CallWith=ScriptState] any cloneArrayBuffer(any buffer, any srcByteOffset, any byteLength);
    [Conditional=STREAMS_API, CallWith=ScriptState] boolean isReadableStreamDisturbed(any stream);

    DOMString resourceLoadStatisticsForOrigin(DOMString domain);
    void setResourceLoadStatisticsEnabled(boolean enable);

    [MayThrowException] void setCanShowModalDialogOverride(boolean allow);

    DOMString composedTreeAsText(Node parent);

    boolean isProcessingUserGesture();
    double lastHandledUserGestureTimestamp();

    GCObservation? observeGC(any observed);

    void setUserInterfaceLayoutDirection(UserInterfaceLayoutDirection userInterfaceLayoutDirection);
    void setBaseWritingDirection(BaseWritingDirection direction);

    boolean userPrefersReducedMotion();
    
    void reportBacktrace();

    [Conditional=POINTER_LOCK] boolean pageHasPendingPointerLock();
    [Conditional=POINTER_LOCK] boolean pageHasPointerLock();

    sequence<DOMString> accessKeyModifiers();

    void setQuickLookPassword(DOMString password);

    [CallWith=Document] void setAsRunningUserScripts();

    void disableTileSizeUpdateDelay();
    void setSpeculativeTilingDelayDisabledForTesting(boolean disabled);

    [Conditional=WEBGL] void simulateWebGLContextChanged(WebGLRenderingContext context);
    [Conditional=WEBGL] void failNextGPUStatusCheck(WebGLRenderingContext context);

    void setPageVisibility(boolean isVisible);

    [Conditional=WEB_RTC] void setH264HardwareEncoderAllowed(boolean allowed);
    [Conditional=WEB_RTC] void applyRotationForOutgoingVideoSources(RTCPeerConnection connection);

    [Conditional=MEDIA_STREAM] void setCameraMediaStreamTrackOrientation(MediaStreamTrack track, short orientation);
    [Conditional=MEDIA_STREAM] void observeMediaStreamTrack(MediaStreamTrack track);
    [Conditional=MEDIA_STREAM] Promise<ImageData> grabNextMediaStreamTrackFrame();
    [Conditional=MEDIA_STREAM] readonly attribute unsigned long trackAudioSampleCount;
    [Conditional=MEDIA_STREAM] readonly attribute unsigned long trackVideoSampleCount;
    [Conditional=MEDIA_STREAM, MayThrowException] void setMediaDeviceState(DOMString deviceID, DOMString property, boolean value);
    [Conditional=MEDIA_STREAM] void delayMediaStreamTrackSamples(MediaStreamTrack track, float delay);
    [Conditional=MEDIA_STREAM] void setMediaStreamTrackMuted(MediaStreamTrack track, boolean muted);
    [Conditional=MEDIA_STREAM] void removeMediaStreamTrack(MediaStream stream, MediaStreamTrack track);
    [Conditional=MEDIA_STREAM] void simulateMediaStreamTrackCaptureSourceFailure(MediaStreamTrack track);

    DOMString audioSessionCategory();
};