/*
 * Copyright (C) 2010-2016 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 INC. 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 INC. 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.
 */

#pragma once

#if PLATFORM(GTK)
#define DEFAULT_WEBKIT_TABSTOLINKS_ENABLED true
#else
#define DEFAULT_WEBKIT_TABSTOLINKS_ENABLED false
#endif

#if ENABLE(SMOOTH_SCROLLING)
#define DEFAULT_WEBKIT_SCROLL_ANIMATOR_ENABLED true
#else
#define DEFAULT_WEBKIT_SCROLL_ANIMATOR_ENABLED false
#endif

#if PLATFORM(COCOA) || PLATFORM(GTK)
#define DEFAULT_HIDDEN_PAGE_DOM_TIMER_THROTTLING_ENABLED true
#define DEFAULT_HIDDEN_PAGE_CSS_ANIMATION_SUSPENSION_ENABLED true
#else
#define DEFAULT_HIDDEN_PAGE_DOM_TIMER_THROTTLING_ENABLED false
#define DEFAULT_HIDDEN_PAGE_CSS_ANIMATION_SUSPENSION_ENABLED false
#endif

#if PLATFORM(COCOA)
#define DEFAULT_PDFPLUGIN_ENABLED true
#else
#define DEFAULT_PDFPLUGIN_ENABLED false
#endif

#if PLATFORM(IOS)
#define DEFAULT_ALLOWS_PICTURE_IN_PICTURE_MEDIA_PLAYBACK true
#define DEFAULT_BACKSPACE_KEY_NAVIGATION_ENABLED false
#define DEFAULT_FRAME_FLATTENING FrameFlatteningFullyEnabled
#define DEFAULT_SHOULD_PRINT_BACKGROUNDS true
#define DEFAULT_TEXT_AREAS_ARE_RESIZABLE false
#define DEFAULT_JAVASCRIPT_CAN_OPEN_WINDOWS_AUTOMATICALLY false
#define DEFAULT_SHOULD_RESPECT_IMAGE_ORIENTATION true
#define DEFAULT_PASSWORD_ECHO_ENABLED true
#define DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK false
#define DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK_AFTER_FULLSCREEN true
#define DEFAULT_INLINE_MEDIA_PLAYBACK_REQUIRES_PLAYS_INLINE_ATTRIBUTE true
#define DEFAULT_INVISIBLE_AUTOPLAY_NOT_PERMITTED true
#define DEFAULT_MEDIA_DATA_LOADS_AUTOMATICALLY false
#define DEFAULT_MEDIA_CONTROLS_SCALE_WITH_PAGE_ZOOM false
#define DEFAULT_TEMPORARY_TILE_COHORT_RETENTION_ENABLED false
#define DEFAULT_REQUIRES_USER_GESTURE_FOR_AUDIO_PLAYBACK true
#define DEFAULT_LEGACY_ENCRYPTED_MEDIA_API_ENABLED false
#else
#define DEFAULT_ALLOWS_PICTURE_IN_PICTURE_MEDIA_PLAYBACK false
#define DEFAULT_BACKSPACE_KEY_NAVIGATION_ENABLED true
#define DEFAULT_FRAME_FLATTENING FrameFlatteningDisabled
#define DEFAULT_SHOULD_PRINT_BACKGROUNDS false
#define DEFAULT_TEXT_AREAS_ARE_RESIZABLE true
#define DEFAULT_JAVASCRIPT_CAN_OPEN_WINDOWS_AUTOMATICALLY true
#define DEFAULT_SHOULD_RESPECT_IMAGE_ORIENTATION false
#define DEFAULT_PASSWORD_ECHO_ENABLED false
#define DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK true
#define DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK_AFTER_FULLSCREEN false
#define DEFAULT_INLINE_MEDIA_PLAYBACK_REQUIRES_PLAYS_INLINE_ATTRIBUTE false
#define DEFAULT_INVISIBLE_AUTOPLAY_NOT_PERMITTED false
#define DEFAULT_MEDIA_DATA_LOADS_AUTOMATICALLY true
#define DEFAULT_MEDIA_CONTROLS_SCALE_WITH_PAGE_ZOOM true
#define DEFAULT_TEMPORARY_TILE_COHORT_RETENTION_ENABLED true
#define DEFAULT_REQUIRES_USER_GESTURE_FOR_AUDIO_PLAYBACK false
#define DEFAULT_LEGACY_ENCRYPTED_MEDIA_API_ENABLED true
#endif

#if PLATFORM(COCOA)
#define DEFAULT_ALLOW_MEDIA_CONTENT_TYPES_REQUIRING_HARDWARE_SUPPORT_AS_FALLBACK true
#else
#define DEFAULT_ALLOW_MEDIA_CONTENT_TYPES_REQUIRING_HARDWARE_SUPPORT_AS_FALLBACK false
#endif

#if PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
#define DEFAULT_SUBPIXEL_ANTIALIASED_LAYER_TEXT_ENABLED true
#else
#define DEFAULT_SUBPIXEL_ANTIALIASED_LAYER_TEXT_ENABLED false
#endif

#if PLATFORM(IOS_SIMULATOR)
#define DEFAULT_ACCELERATED_DRAWING_ENABLED false
#define DEFAULT_CANVAS_USES_ACCELERATED_DRAWING false
#else
#define DEFAULT_ACCELERATED_DRAWING_ENABLED true
#define DEFAULT_CANVAS_USES_ACCELERATED_DRAWING true
#endif

#if PLATFORM(COCOA)
#define DEFAULT_SHOULD_CAPTURE_AUDIO_IN_UIPROCESS true
#else
#define DEFAULT_SHOULD_CAPTURE_AUDIO_IN_UIPROCESS false
#endif

#if PLATFORM(COCOA)
#define DEFAULT_MODERN_MEDIA_CONTROLS_ENABLED true
#else
#define DEFAULT_MODERN_MEDIA_CONTROLS_ENABLED false
#endif

#if PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101200
// <https://webkit.org/b/168415> El Capitan NetworkLoadTiming values are sometimes jumbled
#define DEFAULT_RESOURCE_TIMING_ENABLED false
#else
#define DEFAULT_RESOURCE_TIMING_ENABLED true
#endif

// macro(KeyUpper, KeyLower, TypeNameUpper, TypeName, DefaultValue, HumanReadableName, HumanReadableDescription)

#define FOR_EACH_WEBKIT_BOOL_PREFERENCE(macro) \
    macro(JavaScriptEnabled, javaScriptEnabled, Bool, bool, true, "", "") \
    macro(JavaScriptMarkupEnabled, javaScriptMarkupEnabled, Bool, bool, true, "", "") \
    macro(LoadsImagesAutomatically, loadsImagesAutomatically, Bool, bool, true, "", "") \
    macro(LoadsSiteIconsIgnoringImageLoadingPreference, loadsSiteIconsIgnoringImageLoadingPreference, Bool, bool, false, "", "") \
    macro(PluginsEnabled, pluginsEnabled, Bool, bool, false, "", "") \
    macro(JavaEnabled, javaEnabled, Bool, bool, false, "", "") \
    macro(JavaEnabledForLocalFiles, javaEnabledForLocalFiles, Bool, bool, false, "", "") \
    macro(OfflineWebApplicationCacheEnabled, offlineWebApplicationCacheEnabled, Bool, bool, true, "", "") \
    macro(LocalStorageEnabled, localStorageEnabled, Bool, bool, true, "", "") \
    macro(DatabasesEnabled, databasesEnabled, Bool, bool, true, "", "") \
    macro(XSSAuditorEnabled, xssAuditorEnabled, Bool, bool, true, "", "") \
    macro(PrivateBrowsingEnabled, privateBrowsingEnabled, Bool, bool, false, "", "") \
    macro(TextAreasAreResizable, textAreasAreResizable, Bool, bool, DEFAULT_TEXT_AREAS_ARE_RESIZABLE, "", "") \
    macro(JavaScriptCanOpenWindowsAutomatically, javaScriptCanOpenWindowsAutomatically, Bool, bool, DEFAULT_JAVASCRIPT_CAN_OPEN_WINDOWS_AUTOMATICALLY, "", "") \
    macro(HyperlinkAuditingEnabled, hyperlinkAuditingEnabled, Bool, bool, true, "", "") \
    macro(NeedsSiteSpecificQuirks, needsSiteSpecificQuirks, Bool, bool, false, "", "") \
    macro(AcceleratedCompositingEnabled, acceleratedCompositingEnabled, Bool, bool, true, "", "") \
    macro(ForceCompositingMode, forceCompositingMode, Bool, bool, false, "", "") \
    macro(CanvasUsesAcceleratedDrawing, canvasUsesAcceleratedDrawing, Bool, bool, DEFAULT_CANVAS_USES_ACCELERATED_DRAWING, "", "") \
    macro(WebGLEnabled, webGLEnabled, Bool, bool, true, "", "") \
    macro(ForceSoftwareWebGLRendering, forceSoftwareWebGLRendering, Bool, bool, false, "", "") \
    macro(Accelerated2dCanvasEnabled, accelerated2dCanvasEnabled, Bool, bool, false, "", "") \
    macro(CSSAnimationTriggersEnabled, cssAnimationTriggersEnabled, Bool, bool, true, "", "") \
    macro(ForceFTPDirectoryListings, forceFTPDirectoryListings, Bool, bool, false, "", "") \
    macro(TabsToLinks, tabsToLinks, Bool, bool, DEFAULT_WEBKIT_TABSTOLINKS_ENABLED, "", "") \
    macro(DNSPrefetchingEnabled, dnsPrefetchingEnabled, Bool, bool, false, "", "") \
    macro(DOMTimersThrottlingEnabled, domTimersThrottlingEnabled, Bool, bool, true, "", "") \
    macro(WebArchiveDebugModeEnabled, webArchiveDebugModeEnabled, Bool, bool, false, "", "") \
    macro(LocalFileContentSniffingEnabled, localFileContentSniffingEnabled, Bool, bool, false, "", "") \
    macro(UsesPageCache, usesPageCache, Bool, bool, true, "", "") \
    macro(PageCacheSupportsPlugins, pageCacheSupportsPlugins, Bool, bool, true, "", "") \
    macro(AuthorAndUserStylesEnabled, authorAndUserStylesEnabled, Bool, bool, true, "", "") \
    macro(PaginateDuringLayoutEnabled, paginateDuringLayoutEnabled, Bool, bool, false, "", "") \
    macro(DOMPasteAllowed, domPasteAllowed, Bool, bool, false, "", "") \
    macro(JavaScriptCanAccessClipboard, javaScriptCanAccessClipboard, Bool, bool, false, "", "") \
    macro(ShouldPrintBackgrounds, shouldPrintBackgrounds, Bool, bool, DEFAULT_SHOULD_PRINT_BACKGROUNDS, "", "") \
    macro(FullScreenEnabled, fullScreenEnabled, Bool, bool, false, "", "") \
    macro(AsynchronousSpellCheckingEnabled, asynchronousSpellCheckingEnabled, Bool, bool, false, "", "") \
    macro(WebSecurityEnabled, webSecurityEnabled, Bool, bool, true, "", "") \
    macro(AllowUniversalAccessFromFileURLs, allowUniversalAccessFromFileURLs, Bool, bool, false, "", "") \
    macro(AllowFileAccessFromFileURLs, allowFileAccessFromFileURLs, Bool, bool, false, "", "") \
    macro(AVFoundationEnabled, isAVFoundationEnabled, Bool, bool, true, "", "") \
    macro(AVFoundationNSURLSessionEnabled, isAVFoundationNSURLSessionEnabled, Bool, bool, true, "", "") \
    macro(GStreamerEnabled, isGStreamerEnabled, Bool, bool, true, "", "") \
    macro(RequiresUserGestureForMediaPlayback, requiresUserGestureForMediaPlayback, Bool, bool, false, "", "") \
    macro(RequiresUserGestureForVideoPlayback, requiresUserGestureForVideoPlayback, Bool, bool, false, "", "") \
    macro(RequiresUserGestureForAudioPlayback, requiresUserGestureForAudioPlayback, Bool, bool, DEFAULT_REQUIRES_USER_GESTURE_FOR_AUDIO_PLAYBACK, "", "") \
    macro(RequiresUserGestureToLoadVideo, requiresUserGestureToLoadVideo, Bool, bool, false, "", "") \
    macro(MainContentUserGestureOverrideEnabled, mainContentUserGestureOverrideEnabled, Bool, bool, false, "", "") \
    macro(MediaUserGestureInheritsFromDocument, mediaUserGestureInheritsFromDocument, Bool, bool, false, "", "") \
    macro(AllowsInlineMediaPlayback, allowsInlineMediaPlayback, Bool, bool, DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK, "", "") \
    macro(AllowsInlineMediaPlaybackAfterFullscreen, allowsInlineMediaPlaybackAfterFullscreen, Bool, bool, DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK_AFTER_FULLSCREEN, "", "") \
    macro(InlineMediaPlaybackRequiresPlaysInlineAttribute, inlineMediaPlaybackRequiresPlaysInlineAttribute, Bool, bool, DEFAULT_INLINE_MEDIA_PLAYBACK_REQUIRES_PLAYS_INLINE_ATTRIBUTE, "", "") \
    macro(InvisibleAutoplayNotPermitted, invisibleAutoplayNotPermitted, Bool, bool, DEFAULT_INVISIBLE_AUTOPLAY_NOT_PERMITTED, "", "") \
    macro(MediaDataLoadsAutomatically, mediaDataLoadsAutomatically, Bool, bool, DEFAULT_MEDIA_DATA_LOADS_AUTOMATICALLY, "", "") \
    macro(AllowsPictureInPictureMediaPlayback, allowsPictureInPictureMediaPlayback, Bool, bool, DEFAULT_ALLOWS_PICTURE_IN_PICTURE_MEDIA_PLAYBACK, "", "") \
    macro(AllowsAirPlayForMediaPlayback, allowsAirPlayForMediaPlayback, Bool, bool, true, "", "") \
    macro(MediaControlsScaleWithPageZoom, mediaControlsScaleWithPageZoom, Bool, bool, DEFAULT_MEDIA_CONTROLS_SCALE_WITH_PAGE_ZOOM, "", "") \
    macro(InspectorStartsAttached, inspectorStartsAttached, Bool, bool, true, "", "") \
    macro(ShowsToolTipOverTruncatedText, showsToolTipOverTruncatedText, Bool, bool, false, "", "") \
    macro(MockScrollbarsEnabled, mockScrollbarsEnabled, Bool, bool, false, "", "") \
    macro(WebAudioEnabled, webAudioEnabled, Bool, bool, true, "", "") \
    macro(AttachmentElementEnabled, attachmentElementEnabled, Bool, bool, false, "", "") \
    macro(SuppressesIncrementalRendering, suppressesIncrementalRendering, Bool, bool, false, "", "") \
    macro(BackspaceKeyNavigationEnabled, backspaceKeyNavigationEnabled, Bool, bool, DEFAULT_BACKSPACE_KEY_NAVIGATION_ENABLED, "", "") \
    macro(CaretBrowsingEnabled, caretBrowsingEnabled, Bool, bool, false, "", "") \
    macro(ShouldDisplaySubtitles, shouldDisplaySubtitles, Bool, bool, false, "", "") \
    macro(ShouldDisplayCaptions, shouldDisplayCaptions, Bool, bool, false, "", "") \
    macro(ShouldDisplayTextDescriptions, shouldDisplayTextDescriptions, Bool, bool, false, "", "") \
    macro(NotificationsEnabled, notificationsEnabled, Bool, bool, true, "", "") \
    macro(ShouldRespectImageOrientation, shouldRespectImageOrientation, Bool, bool, DEFAULT_SHOULD_RESPECT_IMAGE_ORIENTATION, "", "") \
    macro(WantsBalancedSetDefersLoadingBehavior, wantsBalancedSetDefersLoadingBehavior, Bool, bool, false, "", "") \
    macro(RequestAnimationFrameEnabled, requestAnimationFrameEnabled, Bool, bool, true, "", "") \
    macro(DiagnosticLoggingEnabled, diagnosticLoggingEnabled, Bool, bool, false, "", "") \
    macro(AsynchronousPluginInitializationEnabled, asynchronousPluginInitializationEnabled, Bool, bool, false, "", "") \
    macro(AsynchronousPluginInitializationEnabledForAllPlugins, asynchronousPluginInitializationEnabledForAllPlugins, Bool, bool, false, "", "") \
    macro(ArtificialPluginInitializationDelayEnabled, artificialPluginInitializationDelayEnabled, Bool, bool, false, "", "") \
    macro(TabToLinksEnabled, tabToLinksEnabled, Bool, bool, false, "", "") \
    macro(ScrollingPerformanceLoggingEnabled, scrollingPerformanceLoggingEnabled, Bool, bool, false, "", "") \
    macro(ScrollAnimatorEnabled, scrollAnimatorEnabled, Bool, bool, DEFAULT_WEBKIT_SCROLL_ANIMATOR_ENABLED, "", "") \
    macro(ForceUpdateScrollbarsOnMainThreadForPerformanceTesting, forceUpdateScrollbarsOnMainThreadForPerformanceTesting, Bool, bool, false, "", "") \
    macro(CookieEnabled, cookieEnabled, Bool, bool, true, "", "") \
    macro(PlugInSnapshottingEnabled, plugInSnapshottingEnabled, Bool, bool, false, "", "") \
    macro(SnapshotAllPlugIns, snapshotAllPlugIns, Bool, bool, false, "", "") \
    macro(AutostartOriginPlugInSnapshottingEnabled, autostartOriginPlugInSnapshottingEnabled, Bool, bool, true, "", "") \
    macro(PrimaryPlugInSnapshotDetectionEnabled, primaryPlugInSnapshotDetectionEnabled, Bool, bool, true, "", "") \
    macro(PDFPluginEnabled, pdfPluginEnabled, Bool, bool, DEFAULT_PDFPLUGIN_ENABLED, "", "") \
    macro(UsesEncodingDetector, usesEncodingDetector, Bool, bool, false, "", "") \
    macro(TextAutosizingEnabled, textAutosizingEnabled, Bool, bool, WebCore::Settings::defaultTextAutosizingEnabled(), "", "") \
    macro(AggressiveTileRetentionEnabled, aggressiveTileRetentionEnabled, Bool, bool, false, "", "") \
    macro(TemporaryTileCohortRetentionEnabled, temporaryTileCohortRetentionEnabled, Bool, bool, DEFAULT_TEMPORARY_TILE_COHORT_RETENTION_ENABLED, "", "") \
    macro(QTKitEnabled, isQTKitEnabled, Bool, bool, WebCore::Settings::isQTKitEnabled(), "", "") \
    macro(PageVisibilityBasedProcessSuppressionEnabled, pageVisibilityBasedProcessSuppressionEnabled, Bool, bool, true, "", "") \
    macro(SmartInsertDeleteEnabled, smartInsertDeleteEnabled, Bool, bool, true, "", "") \
    macro(SelectTrailingWhitespaceEnabled, selectTrailingWhitespaceEnabled, Bool, bool, false, "", "") \
    macro(ShowsURLsInToolTipsEnabled, showsURLsInToolTipsEnabled, Bool, bool, false, "", "") \
    macro(AcceleratedCompositingForOverflowScrollEnabled, acceleratedCompositingForOverflowScrollEnabled, Bool, bool, false, "", "") \
    macro(HiddenPageDOMTimerThrottlingEnabled, hiddenPageDOMTimerThrottlingEnabled, Bool, bool, DEFAULT_HIDDEN_PAGE_DOM_TIMER_THROTTLING_ENABLED, "", "") \
    macro(HiddenPageDOMTimerThrottlingAutoIncreases, hiddenPageDOMTimerThrottlingAutoIncreases, Bool, bool, false, "", "") \
    macro(HiddenPageCSSAnimationSuspensionEnabled, hiddenPageCSSAnimationSuspensionEnabled, Bool, bool, DEFAULT_HIDDEN_PAGE_CSS_ANIMATION_SUSPENSION_ENABLED, "", "") \
    macro(LowPowerVideoAudioBufferSizeEnabled, lowPowerVideoAudioBufferSizeEnabled, Bool, bool, false, "", "") \
    macro(ThreadedScrollingEnabled, threadedScrollingEnabled, Bool, bool, true, "", "") \
    macro(SimpleLineLayoutEnabled, simpleLineLayoutEnabled, Bool, bool, true, "", "") \
    macro(SubpixelCSSOMElementMetricsEnabled, subpixelCSSOMElementMetricsEnabled, Bool, bool, false, "", "") \
    macro(UseGiantTiles, useGiantTiles, Bool, bool, false, "", "") \
    macro(MediaDevicesEnabled, mediaDevicesEnabled, Bool, bool, false, "", "") \
    macro(MediaStreamEnabled, mediaStreamEnabled, Bool, bool, true, "", "") \
    macro(PeerConnectionEnabled, peerConnectionEnabled, Bool, bool, WebCore::LibWebRTCProvider::webRTCAvailable(), "", "") \
    macro(UseLegacyTextAlignPositionedElementBehavior, useLegacyTextAlignPositionedElementBehavior, Bool, bool, false, "", "") \
    macro(SpatialNavigationEnabled, spatialNavigationEnabled, Bool, bool, false, "", "") \
    macro(MediaSourceEnabled, mediaSourceEnabled, Bool, bool, true, "", "") \
    macro(ViewGestureDebuggingEnabled, viewGestureDebuggingEnabled, Bool, bool, false, "", "") \
    macro(ShouldConvertPositionStyleOnCopy, shouldConvertPositionStyleOnCopy, Bool, bool, false, "", "") \
    macro(Standalone, standalone, Bool, bool, false, "", "") \
    macro(TelephoneNumberParsingEnabled, telephoneNumberParsingEnabled, Bool, bool, false, "", "") \
    macro(AllowMultiElementImplicitSubmission, allowMultiElementImplicitSubmission, Bool, bool, false, "", "") \
    macro(AlwaysUseAcceleratedOverflowScroll, alwaysUseAcceleratedOverflowScroll, Bool, bool, false, "", "") \
    macro(PasswordEchoEnabled, passwordEchoEnabled, Bool, bool, DEFAULT_PASSWORD_ECHO_ENABLED, "", "") \
    macro(ImageControlsEnabled, imageControlsEnabled, Bool, bool, false, "", "") \
    macro(EnableInheritURIQueryComponent, enableInheritURIQueryComponent, Bool, bool, false, "", "") \
    macro(ServiceControlsEnabled, serviceControlsEnabled, Bool, bool, false, "", "") \
    macro(NewBlockInsideInlineModelEnabled, newBlockInsideInlineModelEnabled, Bool, bool, false, "", "") \
    macro(DeferredCSSParserEnabled, deferredCSSParserEnabled, Bool, bool, false, "", "") \
    macro(HTTPEquivEnabled, httpEquivEnabled, Bool, bool, true, "", "") \
    macro(MockCaptureDevicesEnabled, mockCaptureDevicesEnabled, Bool, bool, false, "", "") \
    macro(MockCaptureDevicesPromptEnabled, mockCaptureDevicesPromptEnabled, Bool, bool, true, "", "") \
    macro(MediaCaptureRequiresSecureConnection, mediaCaptureRequiresSecureConnection, Bool, bool, true, "", "") \
    macro(EnumeratingAllNetworkInterfacesEnabled, enumeratingAllNetworkInterfacesEnabled, Bool, bool, false, "", "") \
    macro(ICECandidateFilteringEnabled, iceCandidateFilteringEnabled, Bool, bool, true, "", "") \
    macro(ShadowDOMEnabled, shadowDOMEnabled, Bool, bool, true, "Shadow DOM", "HTML Shadow DOM prototype") \
    macro(FetchAPIEnabled, fetchAPIEnabled, Bool, bool, true, "", "") \
    macro(DownloadAttributeEnabled, downloadAttributeEnabled, Bool, bool, true, "", "") \
    macro(SelectionPaintingWithoutSelectionGapsEnabled, selectionPaintingWithoutSelectionGapsEnabled, Bool, bool, false, "", "") \
    macro(ApplePayEnabled, applePayEnabled, Bool, bool, false, "", "") \
    macro(ApplePayCapabilityDisclosureAllowed, applePayCapabilityDisclosureAllowed, Bool, bool, true, "", "") \
    macro(VisualViewportEnabled, visualViewportEnabled, Bool, bool, true, "", "") \
    macro(NeedsStorageAccessFromFileURLsQuirk, needsStorageAccessFromFileURLsQuirk, Bool, bool, true, "", "") \
    macro(LargeImageAsyncDecodingEnabled, largeImageAsyncDecodingEnabled, Bool, bool, true, "", "") \
    macro(AnimatedImageAsyncDecodingEnabled, animatedImageAsyncDecodingEnabled, Bool, bool, true, "", "") \
    macro(CustomElementsEnabled, customElementsEnabled, Bool, bool, true, "", "") \
    macro(EncryptedMediaAPIEnabled, encryptedMediaAPIEnabled, Bool, bool, false, "", "") \
    macro(MediaPreloadingEnabled, mediaPreloadingEnabled, Bool, bool, false, "", "") \
    macro(IntersectionObserverEnabled, intersectionObserverEnabled, Bool, bool, false, "Intersection Observer", "Enable Intersection Observer support") \
    macro(InteractiveFormValidationEnabled, interactiveFormValidationEnabled, Bool, bool, true, "HTML Interactive Form Validation", "HTML interactive form validation") \
    macro(ShouldSuppressKeyboardInputDuringProvisionalNavigation, shouldSuppressKeyboardInputDuringProvisionalNavigation, Bool, bool, false, "", "") \
    macro(CSSGridLayoutEnabled, cssGridLayoutEnabled, Bool, bool, true, "CSS Grid", "CSS Grid Layout Module support") \
    macro(GamepadsEnabled, gamepadsEnabled, Bool, bool, true, "Gamepads", "Web Gamepad API support") \
    macro(InputEventsEnabled, inputEventsEnabled, Bool, bool, true, "Input Events", "Enable InputEvents support") \
    macro(CredentialManagementEnabled, credentialManagementEnabled, Bool, bool, false, "Credential Management", "Enable Credential Management support") \
    macro(ModernMediaControlsEnabled, modernMediaControlsEnabled, Bool, bool, DEFAULT_MODERN_MEDIA_CONTROLS_ENABLED, "Modern Media Controls", "Use modern media controls look") \
    macro(ResourceTimingEnabled, resourceTimingEnabled, Bool, bool, DEFAULT_RESOURCE_TIMING_ENABLED, "Resource Timing", "Enable ResourceTiming API") \
    macro(UserTimingEnabled, userTimingEnabled, Bool, bool, true, "User Timing", "Enable UserTiming API") \
    macro(LegacyEncryptedMediaAPIEnabled, legacyEncryptedMediaAPIEnabled, Bool, bool, DEFAULT_LEGACY_ENCRYPTED_MEDIA_API_ENABLED, "Enable Legacy EME API", "Enable legacy EME API") \
    macro(AllowMediaContentTypesRequiringHardwareSupportAsFallback, allowMediaContentTypesRequiringHardwareSupportAsFallback, Bool, bool, DEFAULT_ALLOW_MEDIA_CONTENT_TYPES_REQUIRING_HARDWARE_SUPPORT_AS_FALLBACK, "Allow Media Content Types Requirining Hardware As Fallback", "Allow Media Content Types Requirining Hardware As Fallback") \
    macro(InspectorAdditionsEnabled, inspectorAdditionsEnabled, Bool, bool, false, "Web Inspector Additions", "Enable additional page APIs used by the Web Inspector frontend page") \
    \

#define FOR_EACH_WEBKIT_DOUBLE_PREFERENCE(macro) \
    macro(IncrementalRenderingSuppressionTimeout, incrementalRenderingSuppressionTimeout, Double, double, 5, "", "") \
    macro(MinimumFontSize, minimumFontSize, Double, double, 0, "", "") \
    macro(MinimumLogicalFontSize, minimumLogicalFontSize, Double, double, 9, "", "") \
    macro(MinimumZoomFontSize, minimumZoomFontSize, Double, double, WebCore::Settings::defaultMinimumZoomFontSize(), "", "") \
    macro(DefaultFontSize, defaultFontSize, Double, double, 16, "", "") \
    macro(DefaultFixedFontSize, defaultFixedFontSize, Double, double, 13, "", "") \
    macro(LayoutInterval, layoutInterval, Double, double, -1, "", "") \
    macro(MaxParseDuration, maxParseDuration, Double, double, -1, "", "") \
    macro(PasswordEchoDuration, passwordEchoDuration, Double, double, 2, "", "") \
\

#define FOR_EACH_WEBKIT_UINT32_PREFERENCE(macro) \
    macro(FontSmoothingLevel, fontSmoothingLevel, UInt32, uint32_t, FontSmoothingLevelMedium, "", "") \
    macro(LayoutFallbackWidth, layoutFallbackWidth, UInt32, uint32_t, 980, "", "") \
    macro(DeviceWidth, deviceWidth, UInt32, uint32_t, 0, "", "") \
    macro(DeviceHeight, deviceHeight, UInt32, uint32_t, 0, "", "") \
    macro(EditableLinkBehavior, editableLinkBehavior, UInt32, uint32_t, WebCore::EditableLinkNeverLive, "", "") \
    macro(InspectorAttachedHeight, inspectorAttachedHeight, UInt32, uint32_t, 300, "", "") \
    macro(InspectorAttachedWidth, inspectorAttachedWidth, UInt32, uint32_t, 750, "", "") \
    macro(InspectorAttachmentSide, inspectorAttachmentSide, UInt32, uint32_t, 0, "", "") \
    macro(StorageBlockingPolicy, storageBlockingPolicy, UInt32, uint32_t, WebCore::SecurityOrigin::BlockThirdPartyStorage, "", "") \
    macro(JavaScriptRuntimeFlags, javaScriptRuntimeFlags, UInt32, uint32_t, 0, "", "") \
    macro(DataDetectorTypes, dataDetectorTypes, UInt32, uint32_t, 0, "", "") \
    macro(UserInterfaceDirectionPolicy, userInterfaceDirectionPolicy, UInt32, uint32_t, 0, "", "") \
    macro(SystemLayoutDirection, systemLayoutDirection, UInt32, uint32_t, 0, "", "") \
    macro(FrameFlattening, frameFlattening, UInt32, uint32_t, DEFAULT_FRAME_FLATTENING, "", "") \
    \

#define FOR_EACH_WEBKIT_DEBUG_BOOL_PREFERENCE(macro) \
    macro(AcceleratedDrawingEnabled, acceleratedDrawingEnabled, Bool, bool, DEFAULT_ACCELERATED_DRAWING_ENABLED, "", "") \
    macro(SubpixelAntialiasedLayerTextEnabled, subpixelAntialiasedLayerTextEnabled, Bool, bool, DEFAULT_SUBPIXEL_ANTIALIASED_LAYER_TEXT_ENABLED, "", "") \
    macro(DisplayListDrawingEnabled, displayListDrawingEnabled, Bool, bool, false, "", "") \
    macro(CompositingBordersVisible, compositingBordersVisible, Bool, bool, false, "", "") \
    macro(CompositingRepaintCountersVisible, compositingRepaintCountersVisible, Bool, bool, false, "", "") \
    macro(TiledScrollingIndicatorVisible, tiledScrollingIndicatorVisible, Bool, bool, false, "", "") \
    macro(SimpleLineLayoutDebugBordersEnabled, simpleLineLayoutDebugBordersEnabled, Bool, bool, false, "", "") \
    macro(DeveloperExtrasEnabled, developerExtrasEnabled, Bool, bool, false, "", "") \
    macro(LogsPageMessagesToSystemConsoleEnabled, logsPageMessagesToSystemConsoleEnabled, Bool, bool, false, "", "") \
    macro(IgnoreViewportScalingConstraints, ignoreViewportScalingConstraints, Bool, bool, true, "", "") \
    macro(ForceAlwaysUserScalable, forceAlwaysUserScalable, Bool, bool, false, "", "") \
    macro(ResourceUsageOverlayVisible, resourceUsageOverlayVisible, Bool, bool, false, "", "") \
    \

#define FOR_EACH_WEBKIT_DEBUG_UINT32_PREFERENCE(macro) \
    macro(VisibleDebugOverlayRegions, visibleDebugOverlayRegions, UInt32, uint32_t, 0, "", "")

// Our Xcode build system does not currently have any concept of DEVELOPER_MODE.
// Cocoa ports must disable experimental features on release branches for now.
#if ENABLE(DEVELOPER_MODE) || PLATFORM(COCOA)
#define DEFAULT_EXPERIMENTAL_FEATURES_ENABLED true
#else
#define DEFAULT_EXPERIMENTAL_FEATURES_ENABLED false
#endif

// For experimental features:
// - The type should be boolean.
// - You must provide the last two parameters for all experimental features. They
//   are the text exposed to the user from the WebKit client.
// - They should be alphabetically ordered by the human readable text (the first string).
// - The default value may be either false (for unstable features) or
//   DEFAULT_EXPERIMENTAL_FEATURES_ENABLED (for features that are ready for
//   wider testing).

#define FOR_EACH_WEBKIT_EXPERIMENTAL_FEATURE_PREFERENCE(macro) \
    macro(BeaconAPIEnabled, beaconAPIEnabled, Bool, bool, false, "Beacon API", "Beacon API prototype") \
    macro(ConstantPropertiesEnabled, constantPropertiesEnabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "Constant Properties", "Enable CSS constant() properties") \
    macro(DisplayContentsEnabled, displayContentsEnabled, Bool, bool, false, "CSS display: contents", "Enable CSS display: contents support") \
    macro(SpringTimingFunctionEnabled, springTimingFunctionEnabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "CSS Spring Animations", "CSS Spring Animation prototype") \
    macro(LinkPreloadEnabled, linkPreloadEnabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "Link Preload", "Link preload support") \
    macro(WebRTCLegacyAPIDisabled, webRTCLegacyAPIDisabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "Remove Legacy WebRTC API", "Remove Legacy WebRTC API") \
    macro(IsSecureContextAttributeEnabled, isSecureContextAttributeEnabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "Secure Contexts API", "Enable Secure Contexts API") \
    macro(ServiceWorkersEnabled, serviceWorkersEnabled, Bool, bool, false, "ServiceWorkers", "Enable ServiceWorkers") \
    macro(CacheAPIEnabled, cacheAPIEnabled, Bool, bool, false, "Cache API", "Enable Cache API") \
    macro(SubresourceIntegrityEnabled, subresourceIntegrityEnabled, Bool, bool, DEFAULT_EXPERIMENTAL_FEATURES_ENABLED, "SubresourceIntegrity", "Enable SubresourceIntegrity") \
    macro(ViewportFitEnabled, viewportFitEnabled, Bool, bool, true, "Viewport Fit", "Enable viewport-fit viewport parameter") \
    macro(WebAnimationsEnabled, webAnimationsEnabled, Bool, bool, false, "Web Animations", "Web Animations prototype") \
    macro(WebGL2Enabled, webGL2Enabled, Bool, bool, false, "WebGL 2.0", "WebGL 2 prototype") \
    macro(WebGPUEnabled, webGPUEnabled, Bool, bool, false, "WebGPU", "WebGPU prototype") \
    macro(AsyncFrameScrollingEnabled, asyncFrameScrollingEnabled, Bool, bool, false, "Async Frame Scrolling", "Perform frame scrolling in a dedicated thread or process") \
    \

#if PLATFORM(COCOA)

#if PLATFORM(IOS)
#define DEFAULT_CURSIVE_FONT_FAMILY "Snell Roundhand"
#define DEFAULT_PICTOGRAPH_FONT_FAMILY "AppleColorEmoji"
#else
#define DEFAULT_CURSIVE_FONT_FAMILY "Apple Chancery"
#define DEFAULT_PICTOGRAPH_FONT_FAMILY "Apple Color Emoji"
#endif


#define FOR_EACH_WEBKIT_FONT_FAMILY_PREFERENCE(macro) \
    macro(StandardFontFamily, standardFontFamily, String, String, "Times", "", "") \
    macro(CursiveFontFamily, cursiveFontFamily, String, String, DEFAULT_CURSIVE_FONT_FAMILY, "", "") \
    macro(FantasyFontFamily, fantasyFontFamily, String, String, "Papyrus", "", "") \
    macro(FixedFontFamily, fixedFontFamily, String, String, "Courier", "", "") \
    macro(SansSerifFontFamily, sansSerifFontFamily, String, String, "Helvetica", "", "") \
    macro(SerifFontFamily, serifFontFamily, String, String, "Times", "", "") \
    macro(PictographFontFamily, pictographFontFamily, String, String, "Apple Color Emoji", "", "") \
    \

#elif PLATFORM(GTK) || PLATFORM(WPE)

#define FOR_EACH_WEBKIT_FONT_FAMILY_PREFERENCE(macro) \
    macro(StandardFontFamily, standardFontFamily, String, String, "Times", "", "") \
    macro(CursiveFontFamily, cursiveFontFamily, String, String, "Comic Sans MS", "", "") \
    macro(FantasyFontFamily, fantasyFontFamily, String, String, "Impact", "", "") \
    macro(FixedFontFamily, fixedFontFamily, String, String, "Courier New", "", "") \
    macro(SansSerifFontFamily, sansSerifFontFamily, String, String, "Helvetica", "", "") \
    macro(SerifFontFamily, serifFontFamily, String, String, "Times", "", "") \
    macro(PictographFontFamily, pictographFontFamily, String, String, "Times", "", "") \
    \

#endif

#define FOR_EACH_WEBKIT_STRING_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_FONT_FAMILY_PREFERENCE(macro) \
    macro(DefaultTextEncodingName, defaultTextEncodingName, String, String, defaultTextEncodingNameForSystemLanguage(), "", "") \
    macro(FTPDirectoryTemplatePath, ftpDirectoryTemplatePath, String, String, "", "", "") \
    macro(MediaContentTypesRequiringHardwareSupport, mediaContentTypesRequiringHardwareSupport, String, String, WebCore::Settings::defaultMediaContentTypesRequiringHardwareSupport(), "", "") \
    \

#define FOR_EACH_WEBKIT_STRING_PREFERENCE_NOT_IN_WEBCORE(macro) \
    macro(InspectorWindowFrame, inspectorWindowFrame, String, String, "", "", "") \
    \

#define FOR_EACH_WEBKIT_DEBUG_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_DEBUG_BOOL_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_DEBUG_UINT32_PREFERENCE(macro) \
    \

#define FOR_EACH_WEBKIT_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_BOOL_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_DOUBLE_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_UINT32_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_STRING_PREFERENCE(macro) \
    FOR_EACH_WEBKIT_STRING_PREFERENCE_NOT_IN_WEBCORE(macro) \
    \