Attachment 396050 Details for Bug 208802 – Patch

[patch] Patch

bug-208802-20200410142951.patch (text/plain), 67.97 KB, created by cathiechen on 2020-04-09 23:29:53 PDT

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Creator: cathiechen

Created: 2020-04-09 23:29:53 PDT

Size: 67.97 KB

patch

obsolete

>Subversion Revision: 259847
>diff --git a/Source/JavaScriptCore/ChangeLog b/Source/JavaScriptCore/ChangeLog
>index 3cd1f0f134470e04a43607870756145a1217588a..da0ad73c354f3a2c05eaafe5a539ac259814e4b8 100644
>--- a/Source/JavaScriptCore/ChangeLog
>+++ b/Source/JavaScriptCore/ChangeLog
>@@ -1,3 +1,16 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add ENABLE_OVERSCROLL_EVENTS.
>+
>+        * Configurations/FeatureDefines.xcconfig:
>+
> 2020-04-08  Darin Adler  <darin@apple.com>
> 
>         [Cocoa] Simplify NSArray, NSDictionary, and NSNumber idioms throughout WebKit
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index e20cd4f1d171579c0003fc916e98ea5da422903b..523a438d83537f42b20a9a65455fb360de44bdf6 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,23 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Parse onoverscroll/scrollend attribute and overscroll/overscroll event name.
>+
>+        * Configurations/FeatureDefines.xcconfig:
>+        * bindings/js/WebCoreBuiltinNames.h:
>+        * dom/EventNames.h:
>+        * dom/GlobalEventHandlers.idl:
>+        * html/HTMLAttributeNames.in:
>+        * html/HTMLElement.cpp:
>+        (WebCore::HTMLElement::createEventHandlerNameMap):
>+        * page/Settings.yaml:
>+
> 2020-04-09  Cathie Chen  <cathiechen@igalia.com>
> 
>         Fix up code style for scroll animation
>diff --git a/Source/WebCore/PAL/ChangeLog b/Source/WebCore/PAL/ChangeLog
>index 8bf1ef409761b3234531cb86fb8b7f29d082b056..7d379c0869b33e145e1c18c47a8289c375d4ec71 100644
>--- a/Source/WebCore/PAL/ChangeLog
>+++ b/Source/WebCore/PAL/ChangeLog
>@@ -1,3 +1,16 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add ENABLE_OVERSCROLL_EVENTS.
>+
>+        * Configurations/FeatureDefines.xcconfig:
>+
> 2020-04-08  Daniel Bates  <dabates@apple.com>
> 
>         Track editable elements on screen
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index b8edc7a5d886deaab875ad1c755ac72b48ac2c85..1525cc317f38b0ae38d5872b5a192a64737d11eb 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,17 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add ENABLE_OVERSCROLL_EVENTS.
>+
>+        * Configurations/FeatureDefines.xcconfig:
>+        * Shared/WebPreferences.yaml:
>+
> 2020-04-09  David Kilzer  <ddkilzer@apple.com>
> 
>         Add WARN_UNUSED_RETURN to decode methods in Source/WebKit/Platform/IPC
>diff --git a/Source/WebKitLegacy/mac/ChangeLog b/Source/WebKitLegacy/mac/ChangeLog
>index 74ded96687c9649b2c1a548391d41ccdb310315e..8c005177e23a51e524ce4406645bf7fb0441fde7 100644
>--- a/Source/WebKitLegacy/mac/ChangeLog
>+++ b/Source/WebKitLegacy/mac/ChangeLog
>@@ -1,3 +1,23 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add overscrollEventsEnabled WebPreference setting.
>+
>+        * Configurations/FeatureDefines.xcconfig:
>+        * WebView/WebPreferenceKeysPrivate.h:
>+        * WebView/WebPreferences.mm:
>+        ([WebPreferences initialize]):
>+        (-[WebPreferences overscrollEventsEnabled]):
>+        (-[WebPreferences setOverscrollEventsEnabled:]):
>+        * WebView/WebPreferencesPrivate.h:
>+        * WebView/WebView.mm:
>+
> 2020-04-08  Darin Adler  <darin@apple.com>
> 
>         [Cocoa] Simplify NSArray, NSDictionary, and NSNumber idioms throughout WebKit
>diff --git a/Source/WebKitLegacy/win/ChangeLog b/Source/WebKitLegacy/win/ChangeLog
>index 804be5a44acf44bf7f5d6fc6a509d7c04b306dc8..104a7833de927fa1a13c330d6853933fdefa4e72 100644
>--- a/Source/WebKitLegacy/win/ChangeLog
>+++ b/Source/WebKitLegacy/win/ChangeLog
>@@ -1,3 +1,24 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add overscrollEventsEnabled WebPreference setting.
>+
>+        * Interfaces/IWebPreferencesPrivate.idl:
>+        * WebPreferenceKeysPrivate.h:
>+        * WebPreferences.cpp:
>+        (WebPreferences::initializeDefaultSettings):
>+        (WebPreferences::overscrollEventsEnabled):
>+        (WebPreferences::setOverscrollEventsEnabled):
>+        * WebPreferences.h:
>+        * WebView.cpp:
>+        (WebView::notifyPreferencesChanged):
>+
> 2020-04-08  Daniel Bates  <dabates@apple.com>
> 
>         Should find touch-action elements inside non-composited iframes
>diff --git a/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig b/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig
>+++ b/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/Source/WebCore/Configurations/FeatureDefines.xcconfig b/Source/WebCore/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Source/WebCore/Configurations/FeatureDefines.xcconfig
>+++ b/Source/WebCore/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig b/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig
>+++ b/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/Source/WebCore/bindings/js/WebCoreBuiltinNames.h b/Source/WebCore/bindings/js/WebCoreBuiltinNames.h
>index c6205c5f6e6b16d82761a455f5f9f0528004e888..3360bc58ca0cc5f33c347f24101af7bc2d5b3c5a 100644
>--- a/Source/WebCore/bindings/js/WebCoreBuiltinNames.h
>+++ b/Source/WebCore/bindings/js/WebCoreBuiltinNames.h
>@@ -305,6 +305,8 @@ namespace WebCore {
>     macro(matchingElementInFlatTree) \
>     macro(mediaStreamTrackConstraints) \
>     macro(openDatabase) \
>+    macro(onoverscroll) \
>+    macro(onscrollend) \
>     macro(ontouchcancel) \
>     macro(ontouchend) \
>     macro(ontouchmove) \
>diff --git a/Source/WebCore/dom/EventNames.h b/Source/WebCore/dom/EventNames.h
>index 5ceee6f6816dee9d799cb150e175ac5d7ed4ac77..e4df4c4b7d2f8b7a33a5f1373c62395b12164d79 100644
>--- a/Source/WebCore/dom/EventNames.h
>+++ b/Source/WebCore/dom/EventNames.h
>@@ -191,6 +191,7 @@ namespace WebCore {
>     macro(orientationchange) \
>     macro(overconstrained) \
>     macro(overflowchanged) \
>+    macro(overscroll) \
>     macro(pagehide) \
>     macro(pageshow) \
>     macro(paste) \
>@@ -227,6 +228,7 @@ namespace WebCore {
>     macro(result) \
>     macro(resume) \
>     macro(scroll) \
>+    macro(scrollend) \
>     macro(search) \
>     macro(securitypolicyviolation) \
>     macro(seeked) \
>diff --git a/Source/WebCore/dom/GlobalEventHandlers.idl b/Source/WebCore/dom/GlobalEventHandlers.idl
>index 770aa9c3a7401a03873a7183a7192cee076570b0..1f276534f707b8c18b7d47c8f53d32590f3cb2c4 100644
>--- a/Source/WebCore/dom/GlobalEventHandlers.idl
>+++ b/Source/WebCore/dom/GlobalEventHandlers.idl
>@@ -132,4 +132,8 @@
>     [NotEnumerable, Conditional=MOUSE_FORCE_EVENTS] attribute EventHandler onwebkitmouseforcedown;
>     [NotEnumerable, Conditional=MOUSE_FORCE_EVENTS] attribute EventHandler onwebkitmouseforcewillbegin;
>     [NotEnumerable, Conditional=MOUSE_FORCE_EVENTS] attribute EventHandler onwebkitmouseforceup;
>+
>+    // Event handlers from Overscroll Events API (https://wicg.github.io/overscroll-scrollend-events/)
>+    [NotEnumerable, Conditional=OVERSCROLL_EVENTS, EnabledBySetting=OverscrollEvents] attribute EventHandler onoverscroll;
>+    [NotEnumerable, Conditional=OVERSCROLL_EVENTS, EnabledBySetting=OverscrollEvents] attribute EventHandler onscrollend;
> };
>diff --git a/Source/WebCore/html/HTMLAttributeNames.in b/Source/WebCore/html/HTMLAttributeNames.in
>index dcd8378d9541c7a39f83ba6cce841f87df3be3e1..099ffb8225c542fc82a417b5f4b88bdece5bdf53 100644
>--- a/Source/WebCore/html/HTMLAttributeNames.in
>+++ b/Source/WebCore/html/HTMLAttributeNames.in
>@@ -267,6 +267,7 @@ onmousewheel
> ononline
> onoffline
> onorientationchange
>+onoverscroll
> onpagehide
> onpageshow
> onpaste
>@@ -287,6 +288,7 @@ onratechange
> onreset
> onresize
> onscroll
>+onscrollend
> onsearch
> onseeked
> onseeking
>diff --git a/Source/WebCore/html/HTMLElement.cpp b/Source/WebCore/html/HTMLElement.cpp
>index 45772d13ddae554ccbc471b43c11fd5a7084b033..d6eee43c523c9652d871a0e7157ae175e61eb302 100644
>--- a/Source/WebCore/html/HTMLElement.cpp
>+++ b/Source/WebCore/html/HTMLElement.cpp
>@@ -284,6 +284,7 @@ HTMLElement::EventHandlerNameMap HTMLElement::createEventHandlerNameMap()
>         &onmouseoverAttr.get(),
>         &onmouseupAttr.get(),
>         &onmousewheelAttr.get(),
>+        &onoverscrollAttr.get(),
>         &onpasteAttr.get(),
>         &onpauseAttr.get(),
>         &onplayAttr.get(),
>@@ -301,6 +302,7 @@ HTMLElement::EventHandlerNameMap HTMLElement::createEventHandlerNameMap()
>         &onresetAttr.get(),
>         &onresizeAttr.get(),
>         &onscrollAttr.get(),
>+        &onscrollendAttr.get(),
>         &onsearchAttr.get(),
>         &onseekedAttr.get(),
>         &onseekingAttr.get(),
>diff --git a/Source/WebCore/page/Settings.yaml b/Source/WebCore/page/Settings.yaml
>index a8676d97c3cab973c13235df896c2dd7adaeb5ae..8c5eaa2331b4020adc246ee962a31e871e869b02 100644
>--- a/Source/WebCore/page/Settings.yaml
>+++ b/Source/WebCore/page/Settings.yaml
>@@ -919,6 +919,10 @@ isLoggedInAPIEnabled:
> enterKeyHintEnabled:
>   initial: false
> 
>+overscrollEventsEnabled:
>+  initial: false
>+  conditional: OVERSCROLL_EVENTS
>+
> legacyGetUserMediaEnabled:
>   initial: false
>   conditional: MEDIA_STREAM
>diff --git a/Source/WebKit/Configurations/FeatureDefines.xcconfig b/Source/WebKit/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Source/WebKit/Configurations/FeatureDefines.xcconfig
>+++ b/Source/WebKit/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/Source/WebKit/Shared/WebPreferences.yaml b/Source/WebKit/Shared/WebPreferences.yaml
>index f5448376a37eeb4028399d17347492b431330e56..c2a5c0c6cae2a1df04b14287064e29e71048ddb1 100644
>--- a/Source/WebKit/Shared/WebPreferences.yaml
>+++ b/Source/WebKit/Shared/WebPreferences.yaml
>@@ -1573,6 +1573,14 @@ AspectRatioOfImgFromWidthAndHeightEnabled:
>   humanReadableDescription: "Map HTML attributes width/height to the default aspect ratio of <img>"
>   category: experimental
> 
>+OverscrollEventsEnabled:
>+  type: bool
>+  defaultValue: false
>+  humanReadableName: "Overscroll events"
>+  humanReadableDescription: "Enable the onscrollend and scrollend events"
>+  category: experimental
>+  condition: ENABLE(OVERSCROLL_EVENTS)
>+
> # For internal features:
> # The type should be boolean.
> # You must provide a humanReadableName and humanReadableDescription for all debug features. They
>diff --git a/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig b/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig
>+++ b/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/Source/WebKitLegacy/mac/WebView/WebPreferenceKeysPrivate.h b/Source/WebKitLegacy/mac/WebView/WebPreferenceKeysPrivate.h
>index 77b3989502025e61d727690c5e9ec81b2ddae3bb..85f13565e86275b75aaf386a3e6f303efcee44ad 100644
>--- a/Source/WebKitLegacy/mac/WebView/WebPreferenceKeysPrivate.h
>+++ b/Source/WebKitLegacy/mac/WebView/WebPreferenceKeysPrivate.h
>@@ -210,6 +210,7 @@
> #define WebKitCSSShadowPartsEnabledPreferenceKey @"WebKitCSSShadowPartsEnabled"
> #define WebKitLayoutFormattingContextIntegrationEnabledPreferenceKey @"WebKitLayoutFormattingContextIntegrationEnabled"
> #define WebKitWebSQLEnabledPreferenceKey @"WebKitWebSQLEnabled"
>+#define WebKitOverscrollEventsEnabledPreferenceKey @"WebKitOverscrollEventsEnabled"
> 
> #if !TARGET_OS_IPHONE
> // These are private both because callers should be using the cover methods and because the
>diff --git a/Source/WebKitLegacy/mac/WebView/WebPreferences.mm b/Source/WebKitLegacy/mac/WebView/WebPreferences.mm
>index 180929c4d1f697f704198c3d9c8c852bd6de69c2..11bad8a3571627131d38eb786d51620b24f13ebc 100644
>--- a/Source/WebKitLegacy/mac/WebView/WebPreferences.mm
>+++ b/Source/WebKitLegacy/mac/WebView/WebPreferences.mm
>@@ -713,6 +713,9 @@ public:
>         @NO, WebKitAspectRatioOfImgFromWidthAndHeightEnabledPreferenceKey,
>         @NO, WebKitWebSQLEnabledPreferenceKey,
>         @YES, WebKitDebugNeedsInAppBrowserPrivacyQuirksPreferenceKey,
>+#if ENABLE(OVERSCROLL_EVENTS)
>+        @NO, WebKitOverscrollEventsEnabledPreferenceKey,
>+#endif
>         nil];
> 
> #if !PLATFORM(IOS_FAMILY)
>@@ -3678,6 +3681,16 @@ static NSString *classIBCreatorID = nil;
>     [self _setBoolValue:webSQLEnabled forKey:WebKitWebSQLEnabledPreferenceKey];
> }
> 
>+- (BOOL)overscrollEventsEnabled
>+{
>+    return [self _boolValueForKey:WebKitOverscrollEventsEnabledPreferenceKey];
>+}
>+
>+- (void)setOverscrollEventsEnabled:(BOOL)flag
>+{
>+    [self _setBoolValue:flag forKey:WebKitOverscrollEventsEnabledPreferenceKey];
>+}
>+
> @end
> 
> @implementation WebPreferences (WebInternal)
>diff --git a/Source/WebKitLegacy/mac/WebView/WebPreferencesPrivate.h b/Source/WebKitLegacy/mac/WebView/WebPreferencesPrivate.h
>index a84549d4abd1c5d26ddf9bbf3b4de79dd407c18d..7ff7319d87715da78070be02e0757341e3907c17 100644
>--- a/Source/WebKitLegacy/mac/WebView/WebPreferencesPrivate.h
>+++ b/Source/WebKitLegacy/mac/WebView/WebPreferencesPrivate.h
>@@ -688,6 +688,7 @@ extern NSString *WebPreferencesCacheModelChangedInternalNotification WEBKIT_DEPR
> @property (nonatomic) BOOL asyncClipboardAPIEnabled;
> @property (nonatomic) BOOL linkPreloadResponsiveImagesEnabled;
> @property (nonatomic) BOOL aspectRatioOfImgFromWidthAndHeightEnabled;
>+@property (nonatomic) BOOL overscrollEventsEnabled;
> 
> #if TARGET_OS_IPHONE
> @property (nonatomic) BOOL quickLookDocumentSavingEnabled;
>diff --git a/Source/WebKitLegacy/mac/WebView/WebView.mm b/Source/WebKitLegacy/mac/WebView/WebView.mm
>index 95d0f3e8d67a834012ad07f63eddce290673aff5..2de4a1d7aae86619eecc0fa17f90918711f7054f 100644
>--- a/Source/WebKitLegacy/mac/WebView/WebView.mm
>+++ b/Source/WebKitLegacy/mac/WebView/WebView.mm
>@@ -3015,6 +3015,9 @@ static bool needsSelfRetainWhileLoadingQuirk()
>     settings.setCSSOMViewScrollingAPIEnabled([preferences CSSOMViewScrollingAPIEnabled]);
>     settings.setCSSOMViewSmoothScrollingEnabled([preferences CSSOMViewSmoothScrollingEnabled]);
>     settings.setMediaContentTypesRequiringHardwareSupport([preferences mediaContentTypesRequiringHardwareSupport]);
>+#if ENABLE(OVERSCROLL_EVENTS)
>+    settings.setOverscrollEventsEnabled([preferences overscrollEventsEnabled]);
>+#endif
> 
>     switch ([preferences storageBlockingPolicy]) {
>     case WebAllowAllStorage:
>diff --git a/Source/WebKitLegacy/win/Interfaces/IWebPreferencesPrivate.idl b/Source/WebKitLegacy/win/Interfaces/IWebPreferencesPrivate.idl
>index dffd94dd86c2ffd706708ac770776ceb030edb49..65cf3ad97f515658428d32040f5d22e335cb1fdf 100644
>--- a/Source/WebKitLegacy/win/Interfaces/IWebPreferencesPrivate.idl
>+++ b/Source/WebKitLegacy/win/Interfaces/IWebPreferencesPrivate.idl
>@@ -265,4 +265,7 @@ interface IWebPreferencesPrivate8 : IWebPreferencesPrivate7
> {
>     HRESULT allowTopNavigationToDataURLs([out, retval] BOOL* enabled);
>     HRESULT setAllowTopNavigationToDataURLs([in] BOOL enabled);
>+    HRESULT overscrollEventsEnabled([out, retval] BOOL*);
>+    HRESULT setOverscrollEventsEnabled([in] BOOL enabled);
>+
> }
>diff --git a/Source/WebKitLegacy/win/WebPreferenceKeysPrivate.h b/Source/WebKitLegacy/win/WebPreferenceKeysPrivate.h
>index 17bcf9be18eba8234323d4bd2ca9251fb7b0ff22..04aeb6c7bafb01200a6eb425ab1c3f4509c798b1 100644
>--- a/Source/WebKitLegacy/win/WebPreferenceKeysPrivate.h
>+++ b/Source/WebKitLegacy/win/WebPreferenceKeysPrivate.h
>@@ -227,3 +227,5 @@
> #define WebKitAspectRatioOfImgFromWidthAndHeightEnabledPreferenceKey "WebKitAspectRatioOfImgFromWidthAndHeightEnabled"
> 
> #define WebKitWebSQLEnabledPreferenceKey "WebKitWebSQLEnabled"
>+
>+#define WebKitOverscrollEventsEnabledPreferenceKey "WebKitOverscrollEventsEnabled"
>diff --git a/Source/WebKitLegacy/win/WebPreferences.cpp b/Source/WebKitLegacy/win/WebPreferences.cpp
>index dd29e9236ca8780f875b6160b91e4867ccbccdb8..184b2c8b8d21f4e4fe68c7cb0cbe66011099ffd8 100644
>--- a/Source/WebKitLegacy/win/WebPreferences.cpp
>+++ b/Source/WebKitLegacy/win/WebPreferences.cpp
>@@ -354,6 +354,8 @@ void WebPreferences::initializeDefaultSettings()
> 
>     CFDictionaryAddValue(defaults, CFSTR(WebKitWebSQLEnabledPreferenceKey), kCFBooleanFalse);
> 
>+    CFDictionaryAddValue(defaults, CFSTR(WebKitOverscrollEventsEnabledPreferenceKey), kCFBooleanFalse);
>+
>     defaultSettings = defaults;
> #endif
> }
>@@ -2470,6 +2472,20 @@ HRESULT WebPreferences::setWebSQLEnabled(BOOL enabled)
>     return S_OK;
> }
> 
>+HRESULT WebPreferences::overscrollEventsEnabled(_Out_ BOOL* enabled)
>+{
>+    if (!enabled)
>+        return E_POINTER;
>+    *enabled = boolValueForKey(WebKitOverscrollEventsEnabledPreferenceKey);
>+    return S_OK;
>+}
>+
>+HRESULT WebPreferences::setOverscrollEventsEnabled(BOOL enabled)
>+{
>+    setBoolValue(WebKitOverscrollEventsEnabledPreferenceKey, enabled);
>+    return S_OK;
>+}
>+
> HRESULT WebPreferences::allowTopNavigationToDataURLs(_Out_ BOOL* allowAccess)
> {
>     if (!allowAccess)
>diff --git a/Source/WebKitLegacy/win/WebPreferences.h b/Source/WebKitLegacy/win/WebPreferences.h
>index a31ba03a825470d81334cdf6438f517f4adf091f..7098ee1192031c505e38fa869ad378036d218f41 100644
>--- a/Source/WebKitLegacy/win/WebPreferences.h
>+++ b/Source/WebKitLegacy/win/WebPreferences.h
>@@ -307,6 +307,8 @@ public:
>     // IWebPreferencesPrivate8
>     virtual HRESULT STDMETHODCALLTYPE allowTopNavigationToDataURLs(_Out_ BOOL*);
>     virtual HRESULT STDMETHODCALLTYPE setAllowTopNavigationToDataURLs(BOOL);
>+    virtual HRESULT STDMETHODCALLTYPE overscrollEventsEnabled(_Out_ BOOL*);
>+    virtual HRESULT STDMETHODCALLTYPE setOverscrollEventsEnabled(BOOL);
> 
>     // WebPreferences
> 
>diff --git a/Source/WebKitLegacy/win/WebView.cpp b/Source/WebKitLegacy/win/WebView.cpp
>index 9bce368adba4407931e254d61603623eda7500f9..2158710a36e2912d1855ec4e8d5d2e5e60e9a923 100644
>--- a/Source/WebKitLegacy/win/WebView.cpp
>+++ b/Source/WebKitLegacy/win/WebView.cpp
>@@ -5670,6 +5670,11 @@ HRESULT WebView::notifyPreferencesChanged(IWebNotification* notification)
>         return hr;
>     settings.setAspectRatioOfImgFromWidthAndHeightEnabled(!!enabled);
> 
>+    hr = prefsPrivate->overscrollEventsEnabled(&enabled);
>+    if (FAILED(hr))
>+        return hr;
>+    settings.setOverscrollEventsEnabled(!!enabled);
>+
>     return S_OK;
> }
> 
>diff --git a/Source/cmake/WebKitFeatures.cmake b/Source/cmake/WebKitFeatures.cmake
>index fd93c852456c0db421e3f8695b9e660ee3b86cf1..b2ef885f04e939fb97d7a355cb04e78246f7c32e 100644
>--- a/Source/cmake/WebKitFeatures.cmake
>+++ b/Source/cmake/WebKitFeatures.cmake
>@@ -180,6 +180,7 @@ macro(WEBKIT_OPTION_BEGIN)
>     WEBKIT_OPTION_DEFINE(ENABLE_OFFSCREEN_CANVAS "Toggle OffscreenCanvas support" PRIVATE OFF)
>     WEBKIT_OPTION_DEFINE(ENABLE_ORIENTATION_EVENTS "Toggle Orientation Events support" PRIVATE OFF)
>     WEBKIT_OPTION_DEFINE(ENABLE_OVERFLOW_SCROLLING_TOUCH "Toggle accelerated scrolling support" PRIVATE OFF)
>+    WEBKIT_OPTION_DEFINE(ENABLE_OVERSCROLL_EVENTS "Toggle overscroll events" PRIVATE OFF)
>     WEBKIT_OPTION_DEFINE(ENABLE_PAYMENT_REQUEST "Toggle Payment Request support" PRIVATE OFF)
>     WEBKIT_OPTION_DEFINE(ENABLE_PDFKIT_PLUGIN "Toggle PDFKit plugin support" PRIVATE OFF)
>     WEBKIT_OPTION_DEFINE(ENABLE_PICTURE_IN_PICTURE_API "Toggle Picture-in-Picture API support" PRIVATE OFF)
>diff --git a/Tools/ChangeLog b/Tools/ChangeLog
>index 802a2f637601bf0886ed38f58fe924d50fdccf72..37221886a1538bf665e7ca3e3857c5672acf1264 100644
>--- a/Tools/ChangeLog
>+++ b/Tools/ChangeLog
>@@ -1,3 +1,23 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Deal with overscrollEventsEnabled.
>+
>+        * DumpRenderTree/TestOptions.cpp:
>+        (TestOptions::TestOptions):
>+        * DumpRenderTree/TestOptions.h:
>+        * DumpRenderTree/mac/DumpRenderTree.mm:
>+        (enableExperimentalFeatures):
>+        (setWebPreferencesForTestOptions):
>+        * Scripts/webkitperl/FeatureList.pm:
>+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
>+
> 2020-04-08  Darin Adler  <darin@apple.com>
> 
>         [Cocoa] Simplify NSArray, NSDictionary, and NSNumber idioms throughout WebKit
>diff --git a/Tools/DumpRenderTree/TestOptions.cpp b/Tools/DumpRenderTree/TestOptions.cpp
>index 290606a2558e8881d36de840cc52da7d349773d8..a312215ad33e75164a422af9d19a62449d046b09 100644
>--- a/Tools/DumpRenderTree/TestOptions.cpp
>+++ b/Tools/DumpRenderTree/TestOptions.cpp
>@@ -156,6 +156,8 @@ TestOptions::TestOptions(const std::string& pathOrURL, const std::string& absolu
>             enableAspectRatioOfImgFromWidthAndHeight = parseBooleanTestHeaderValue(value);
>         else if (key == "allowTopNavigationToDataURLs")
>             allowTopNavigationToDataURLs = parseBooleanTestHeaderValue(value);
>+        else if (key == "experimental:OverscrollEventsEnabled")
>+            enableOverscrollEvents = parseBooleanTestHeaderValue(value);
>         pairStart = pairEnd + 1;
>     }
> }
>diff --git a/Tools/DumpRenderTree/TestOptions.h b/Tools/DumpRenderTree/TestOptions.h
>index ae4ba4ad5d67746af03dd6ba803dfa70682a0ecc..01cf3460a0988131a0844e724b1195373b7f228d 100644
>--- a/Tools/DumpRenderTree/TestOptions.h
>+++ b/Tools/DumpRenderTree/TestOptions.h
>@@ -58,6 +58,7 @@ struct TestOptions {
>     bool enableAspectRatioOfImgFromWidthAndHeight { false };
>     bool enableWebSQL { true };
>     bool allowTopNavigationToDataURLs { true };
>+    bool enableOverscrollEvents { false };
>     std::string jscOptions;
>     std::string additionalSupportedImageTypes;
> 
>diff --git a/Tools/DumpRenderTree/mac/DumpRenderTree.mm b/Tools/DumpRenderTree/mac/DumpRenderTree.mm
>index 9906a9f7cf33894d3e15e39d2ae10667ae9db176..7b98cd05e974f87ec35fa907554c4245b75d6edc 100644
>--- a/Tools/DumpRenderTree/mac/DumpRenderTree.mm
>+++ b/Tools/DumpRenderTree/mac/DumpRenderTree.mm
>@@ -886,6 +886,7 @@ static void enableExperimentalFeatures(WebPreferences* preferences)
>     [preferences setCSSShadowPartsEnabled:YES];
>     [preferences setAspectRatioOfImgFromWidthAndHeightEnabled:YES];
>     [preferences setCSSOMViewSmoothScrollingEnabled:YES];
>+    [preferences setOverscrollEventsEnabled:YES];
> }
> 
> // Called before each test.
>@@ -1044,6 +1045,7 @@ static void setWebPreferencesForTestOptions(const TestOptions& options)
>     preferences.layoutFormattingContextIntegrationEnabled = options.layoutFormattingContextIntegrationEnabled;
>     preferences.aspectRatioOfImgFromWidthAndHeightEnabled = options.enableAspectRatioOfImgFromWidthAndHeight;
>     preferences.allowTopNavigationToDataURLs = options.allowTopNavigationToDataURLs;
>+    preferences.overscrollEventsEnabled = options.enableOverscrollEvents;
> }
> 
> // Called once on DumpRenderTree startup.
>diff --git a/Tools/Scripts/webkitperl/FeatureList.pm b/Tools/Scripts/webkitperl/FeatureList.pm
>index f73051913651b53ce13626977e49053464033c1e..2be06330ef38600bcd236d6a8b8c09fd864e8064 100644
>--- a/Tools/Scripts/webkitperl/FeatureList.pm
>+++ b/Tools/Scripts/webkitperl/FeatureList.pm
>@@ -137,6 +137,7 @@ my (
>     $offscreenCanvasSupport,
>     $orientationEventsSupport,
>     $overflowScrollingTouchSupport,
>+    $overscrollEventsSupport,
>     $paymentRequestSupport,
>     $pdfkitPluginSupport,
>     $pictureInPictureAPISupport,
>@@ -460,6 +461,9 @@ my @features = (
>     { option => "overflow-scrolling-touch", desc => "Toggle accelerated scrolling support",
>       define => "ENABLE_OVERFLOW_SCROLLING_TOUCH", value => \$overflowScrollingTouchSupport },
> 
>+    { option => "overscroll-events", desc => "Enable Overscroll Events support",
>+      define => "ENABLE_OVERSCROLL_EVENTS", value => \$overscrollEventsSupport },
>+
>     { option => "payment-request", desc => "Toggle Payment Request support",
>       define => "ENABLE_PAYMENT_REQUEST", value => \$paymentRequestSupport },
> 
>diff --git a/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig b/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig
>index a74b4a666f25499a03e3f2685f5bb0d0b21c5294..69a4dbd061fd8863e36c592924d7397a71106b72 100644
>--- a/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig
>+++ b/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig
>@@ -301,6 +301,8 @@ ENABLE_OFFSCREEN_CANVAS = ;
> ENABLE_OVERFLOW_SCROLLING_TOUCH = $(ENABLE_OVERFLOW_SCROLLING_TOUCH_$(WK_COCOA_TOUCH));
> ENABLE_OVERFLOW_SCROLLING_TOUCH_cocoatouch = ENABLE_OVERFLOW_SCROLLING_TOUCH;
> 
>+ENABLE_OVERSCROLL_EVENTS = ENABLE_OVERSCROLL_EVENTS;
>+
> ENABLE_PAYMENT_REQUEST = ENABLE_PAYMENT_REQUEST;
> 
> ENABLE_PICTURE_IN_PICTURE_API = $(ENABLE_PICTURE_IN_PICTURE_API_$(WK_PLATFORM_NAME));
>@@ -421,4 +423,4 @@ ENABLE_WIRELESS_PLAYBACK_TARGET = ENABLE_WIRELESS_PLAYBACK_TARGET;
> 
> ENABLE_XSLT = ENABLE_XSLT;
> 
>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCESSIBILITY_ISOLATED_TREE) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLE_PAY_SESSION_V9) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_C_LOOP) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_EDITABLE_REGION) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FULLSCREEN_API) $(ENABLE_PICTURE_IN_PICTURE_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_GPU_PROCESS) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INSPECTOR_ALTERNATE_DISPATCHERS) $(ENABLE_INSPECTOR_TELEMETRY) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_MEMORY_SAMPLER) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NETWORK_CACHE_SPECULATIVE_REVALIDATION) $(ENABLE_NETWORK_CACHE_STALE_WHILE_REVALIDATE) $(ENABLE_NOTIFICATIONS) $(ENABLE_OFFSCREEN_CANVAS) $(ENABLE_OVERFLOW_SCROLLING_TOUCH) $(ENABLE_OVERSCROLL_EVENTS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESIZE_OBSERVER) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SANDBOX_EXTENSIONS) $(ENABLE_SERVER_PRECONNECT) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SHAREABLE_RESOURCE) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USERSELECT_ALL) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEBDRIVER_MOUSE_INTERACTIONS) $(ENABLE_WEBDRIVER_KEYBOARD_INTERACTIONS) $(ENABLE_WEBDRIVER_TOUCH_INTERACTIONS) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBXR) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_CRYPTO) $(ENABLE_WEB_RTC) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
>diff --git a/ChangeLog b/ChangeLog
>index 088868ee12059e878a9dc87d9fe03a1f80a3a333..3134f4680a67866edf143b4d9e81fcdb69a8cd14 100644
>--- a/ChangeLog
>+++ b/ChangeLog
>@@ -1,3 +1,16 @@
>+2020-04-09  Cathie Chen  <cathiechen@igalia.com>
>+
>+        Add support for overscroll events parsing
>+        https://bugs.webkit.org/show_bug.cgi?id=208802
>+
>+        Reviewed by FrÃ©dÃ©ric Wang.
>+
>+        Based on FrÃ©dÃ©ric Wang's patch.
>+
>+        Add ENABLE_OVERSCROLL_EVENTS which is off by default.
>+
>+        * Source/cmake/WebKitFeatures.cmake:
>+
> 2020-04-08  Ross Kirsling  <ross.kirsling@sony.com>
> 
>         Remove ENABLE_INTL define

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Attachments on bug 208802: 393035 | 393036 | 393120 | 393122 | 393124 | 393384 | 393388 | 396050