Rename _*Marker classes to be _*Scope, for consistency

packages/flutter/lib/src/material/menu_anchor.dart

@@ -362,7 +362,7 @@ class _MenuAnchorState extends State<MenuAnchor> {
       );
     }
 
-    return _MenuAnchorMarker(
+    return _MenuAnchorScope(
       anchorKey: _anchorKey,
       anchor: this,
       isOpen: _isOpen,
@@ -511,7 +511,7 @@ class _MenuAnchorState extends State<MenuAnchor> {
                 // Copy all the themes from the supplied outer context to the
                 // overlay.
                 outerContext,
-                _MenuAnchorMarker(
+                _MenuAnchorScope(
                   // Re-advertize the anchor here in the overlay, since
                   // otherwise a search for the anchor by descendants won't find
                   // it.
@@ -571,7 +571,7 @@ class _MenuAnchorState extends State<MenuAnchor> {
   // dependency relationship that will rebuild the context when the node
   // changes.
   static _MenuAnchorState? _maybeOf(BuildContext context) {
-    return context.dependOnInheritedWidgetOfExactType<_MenuAnchorMarker>()?.anchor;
+    return context.dependOnInheritedWidgetOfExactType<_MenuAnchorScope>()?.anchor;
   }
 }
 
@@ -2195,8 +2195,8 @@ class _LocalizedShortcutLabeler {
   }
 }
 
-class _MenuAnchorMarker extends InheritedWidget {
-  const _MenuAnchorMarker({
+class _MenuAnchorScope extends InheritedWidget {
+  const _MenuAnchorScope({
     required super.child,
     required this.anchorKey,
     required this.anchor,
@@ -2208,7 +2208,7 @@ class _MenuAnchorMarker extends InheritedWidget {
   final bool isOpen;
 
   @override
-  bool updateShouldNotify(_MenuAnchorMarker oldWidget) {
+  bool updateShouldNotify(_MenuAnchorScope oldWidget) {
     return anchorKey != oldWidget.anchorKey
         || anchor != oldWidget.anchor
         || isOpen != oldWidget.isOpen;

packages/flutter/lib/src/widgets/actions.dart

@@ -662,7 +662,7 @@ class Actions extends StatefulWidget {
   // getElementForInheritedWidgetOfExactType. Returns true if the visitor found
   // what it was looking for.
   static bool _visitActionsAncestors(BuildContext context, bool Function(InheritedElement element) visitor) {
-    InheritedElement? actionsElement = context.getElementForInheritedWidgetOfExactType<_ActionsMarker>();
+    InheritedElement? actionsElement = context.getElementForInheritedWidgetOfExactType<_ActionsScope>();
     while (actionsElement != null) {
       if (visitor(actionsElement) == true) {
         break;
@@ -671,7 +671,7 @@ class Actions extends StatefulWidget {
       // context.getElementForInheritedWidgetOfExactType will return itself if it
       // happens to be of the correct type.
       final BuildContext parent = _getParent(actionsElement);
-      actionsElement = parent.getElementForInheritedWidgetOfExactType<_ActionsMarker>();
+      actionsElement = parent.getElementForInheritedWidgetOfExactType<_ActionsScope>();
     }
     return actionsElement != null;
   }
@@ -681,7 +681,7 @@ class Actions extends StatefulWidget {
   static ActionDispatcher _findDispatcher(BuildContext context) {
     ActionDispatcher? dispatcher;
     _visitActionsAncestors(context, (InheritedElement element) {
-      final ActionDispatcher? found = (element.widget as _ActionsMarker).dispatcher;
+      final ActionDispatcher? found = (element.widget as _ActionsScope).dispatcher;
       if (found != null) {
         dispatcher = found;
         return true;
@@ -788,7 +788,7 @@ class Actions extends StatefulWidget {
     );
 
     _visitActionsAncestors(context, (InheritedElement element) {
-      final _ActionsMarker actions = element.widget as _ActionsMarker;
+      final _ActionsScope actions = element.widget as _ActionsScope;
       final Action<T>? result = _castAction(actions, intent: intent);
       if (result != null) {
         context.dependOnInheritedElement(element);
@@ -817,7 +817,7 @@ class Actions extends StatefulWidget {
     );
 
     _visitActionsAncestors(context, (InheritedElement element) {
-      final _ActionsMarker actions = element.widget as _ActionsMarker;
+      final _ActionsScope actions = element.widget as _ActionsScope;
       final Action<T>? result = _castAction(actions, intent: intent);
       if (result != null) {
         action = result;
@@ -830,8 +830,8 @@ class Actions extends StatefulWidget {
   }
 
   // Find the [Action] that handles the given `intent` in the given
-  // `_ActionsMarker`, and verify it has the right type parameter.
-  static Action<T>? _castAction<T extends Intent>(_ActionsMarker actionsMarker, { T? intent }) {
+  // `_ActionsScope`, and verify it has the right type parameter.
+  static Action<T>? _castAction<T extends Intent>(_ActionsScope actionsMarker, { T? intent }) {
     final Action<Intent>? mappedAction = actionsMarker.actions[intent?.runtimeType ?? T];
     if (mappedAction is Action<T>?) {
       return mappedAction;
@@ -851,7 +851,7 @@ class Actions extends StatefulWidget {
   /// widget is found.
   static ActionDispatcher of(BuildContext context) {
     assert(context != null);
-    final _ActionsMarker? marker = context.dependOnInheritedWidgetOfExactType<_ActionsMarker>();
+    final _ActionsScope? marker = context.dependOnInheritedWidgetOfExactType<_ActionsScope>();
     return marker?.dispatcher ?? _findDispatcher(context);
   }
 
@@ -878,7 +878,7 @@ class Actions extends StatefulWidget {
     Object? returnValue;
 
     final bool actionFound = _visitActionsAncestors(context, (InheritedElement element) {
-      final _ActionsMarker actions = element.widget as _ActionsMarker;
+      final _ActionsScope actions = element.widget as _ActionsScope;
       final Action<T>? result = _castAction(actions, intent: intent);
       if (result != null && result.isEnabled(intent)) {
         // Invoke the action we found using the relevant dispatcher from the Actions
@@ -931,7 +931,7 @@ class Actions extends StatefulWidget {
     Object? returnValue;
 
     _visitActionsAncestors(context, (InheritedElement element) {
-      final _ActionsMarker actions = element.widget as _ActionsMarker;
+      final _ActionsScope actions = element.widget as _ActionsScope;
       final Action<T>? result = _castAction(actions, intent: intent);
       if (result != null && result.isEnabled(intent)) {
         // Invoke the action we found using the relevant dispatcher from the Actions
@@ -1005,7 +1005,7 @@ class _ActionsState extends State<Actions> {
 
   @override
   Widget build(BuildContext context) {
-    return _ActionsMarker(
+    return _ActionsScope(
       actions: widget.actions,
       dispatcher: widget.dispatcher,
       rebuildKey: rebuildKey,
@@ -1016,8 +1016,8 @@ class _ActionsState extends State<Actions> {
 
 // An inherited widget used by Actions widget for fast lookup of the Actions
 // widget information.
-class _ActionsMarker extends InheritedWidget {
-  const _ActionsMarker({
+class _ActionsScope extends InheritedWidget {
+  const _ActionsScope({
     required this.dispatcher,
     required this.actions,
     required this.rebuildKey,
@@ -1030,7 +1030,7 @@ class _ActionsMarker extends InheritedWidget {
   final Object rebuildKey;
 
   @override
-  bool updateShouldNotify(_ActionsMarker oldWidget) {
+  bool updateShouldNotify(_ActionsScope oldWidget) {
     return rebuildKey != oldWidget.rebuildKey
         || oldWidget.dispatcher != dispatcher
         || !mapEquals<Type, Action<Intent>>(oldWidget.actions, actions);

packages/flutter/lib/src/widgets/focus_scope.dart

@@ -388,7 +388,7 @@ class Focus extends StatefulWidget {
   static FocusNode of(BuildContext context, { bool scopeOk = false }) {
     assert(context != null);
     assert(scopeOk != null);
-    final _FocusMarker? marker = context.dependOnInheritedWidgetOfExactType<_FocusMarker>();
+    final _FocusInheritedScope? marker = context.dependOnInheritedWidgetOfExactType<_FocusInheritedScope>();
     final FocusNode? node = marker?.notifier;
     assert(() {
       if (node == null) {
@@ -440,7 +440,7 @@ class Focus extends StatefulWidget {
   static FocusNode? maybeOf(BuildContext context, { bool scopeOk = false }) {
     assert(context != null);
     assert(scopeOk != null);
-    final _FocusMarker? marker = context.dependOnInheritedWidgetOfExactType<_FocusMarker>();
+    final _FocusInheritedScope? marker = context.dependOnInheritedWidgetOfExactType<_FocusInheritedScope>();
     final FocusNode? node = marker?.notifier;
     if (node == null) {
       return null;
@@ -686,7 +686,7 @@ class _FocusState extends State<Focus> {
         child: widget.child,
       );
     }
-    return _FocusMarker(
+    return _FocusInheritedScope(
       node: focusNode,
       child: child,
     );
@@ -798,7 +798,7 @@ class FocusScope extends Focus {
   /// The [context] argument must not be null.
   static FocusScopeNode of(BuildContext context) {
     assert(context != null);
-    final _FocusMarker? marker = context.dependOnInheritedWidgetOfExactType<_FocusMarker>();
+    final _FocusInheritedScope? marker = context.dependOnInheritedWidgetOfExactType<_FocusInheritedScope>();
     return marker?.notifier?.nearestScope ?? context.owner!.focusManager.rootScope;
   }
 
@@ -853,17 +853,17 @@ class _FocusScopeState extends _FocusState {
     _focusAttachment!.reparent(parent: widget.parentNode);
     return Semantics(
       explicitChildNodes: true,
-      child: _FocusMarker(
+      child: _FocusInheritedScope(
         node: focusNode,
         child: widget.child,
       ),
     );
   }
 }
 
-// The InheritedWidget marker for Focus and FocusScope.
-class _FocusMarker extends InheritedNotifier<FocusNode> {
-  const _FocusMarker({
+// The InheritedWidget for Focus and FocusScope.
+class _FocusInheritedScope extends InheritedNotifier<FocusNode> {
+  const _FocusInheritedScope({
     required FocusNode node,
     required super.child,
   })  : assert(node != null),

packages/flutter/lib/src/widgets/focus_traversal.dart

@@ -47,7 +47,7 @@ void _focusAndEnsureVisible(
 // sorting their contents.
 class _FocusTraversalGroupInfo {
   _FocusTraversalGroupInfo(
-    _FocusTraversalGroupMarker? marker, {
+    _FocusTraversalGroupScope? marker, {
     FocusTraversalPolicy? defaultPolicy,
     List<FocusNode>? members,
   })  : groupNode = marker?.focusNode,
@@ -284,20 +284,20 @@ abstract class FocusTraversalPolicy with Diagnosticable {
   @protected
   Iterable<FocusNode> sortDescendants(Iterable<FocusNode> descendants, FocusNode currentNode);
 
-  _FocusTraversalGroupMarker? _getMarker(BuildContext? context) {
-    return context?.getElementForInheritedWidgetOfExactType<_FocusTraversalGroupMarker>()?.widget as _FocusTraversalGroupMarker?;
+  _FocusTraversalGroupScope? _getMarker(BuildContext? context) {
+    return context?.getElementForInheritedWidgetOfExactType<_FocusTraversalGroupScope>()?.widget as _FocusTraversalGroupScope?;
   }
 
   // Sort all descendants, taking into account the FocusTraversalGroup
   // that they are each in, and filtering out non-traversable/focusable nodes.
   List<FocusNode> _sortAllDescendants(FocusScopeNode scope, FocusNode currentNode) {
     assert(scope != null);
-    final _FocusTraversalGroupMarker? scopeGroupMarker = _getMarker(scope.context);
+    final _FocusTraversalGroupScope? scopeGroupMarker = _getMarker(scope.context);
     final FocusTraversalPolicy defaultPolicy = scopeGroupMarker?.policy ?? ReadingOrderTraversalPolicy();
     // Build the sorting data structure, separating descendants into groups.
     final Map<FocusNode?, _FocusTraversalGroupInfo> groups = <FocusNode?, _FocusTraversalGroupInfo>{};
     for (final FocusNode node in scope.descendants) {
-      final _FocusTraversalGroupMarker? groupMarker = _getMarker(node.context);
+      final _FocusTraversalGroupScope? groupMarker = _getMarker(node.context);
       final FocusNode? groupNode = groupMarker?.focusNode;
       // Group nodes need to be added to their parent's node, or to the "null"
       // node if no parent is found. This creates the hierarchy of group nodes
@@ -309,7 +309,7 @@ abstract class FocusTraversalPolicy with Diagnosticable {
         // looking with that node's parent, since _getMarker will return the
         // context it was called on if it matches the type.
         final BuildContext? parentContext = _getAncestor(groupNode!.context!, count: 2);
-        final _FocusTraversalGroupMarker? parentMarker = _getMarker(parentContext);
+        final _FocusTraversalGroupScope? parentMarker = _getMarker(parentContext);
         final FocusNode? parentNode = parentMarker?.focusNode;
         groups[parentNode] ??= _FocusTraversalGroupInfo(parentMarker, members: <FocusNode>[], defaultPolicy: defaultPolicy);
         assert(!groups[parentNode]!.members.contains(node));
@@ -1539,7 +1539,7 @@ class FocusTraversalGroup extends StatefulWidget {
   ///    [FocusTraversalGroup] ancestor is found.
   static FocusTraversalPolicy of(BuildContext context) {
     assert(context != null);
-    final _FocusTraversalGroupMarker? inherited = context.dependOnInheritedWidgetOfExactType<_FocusTraversalGroupMarker>();
+    final _FocusTraversalGroupScope? inherited = context.dependOnInheritedWidgetOfExactType<_FocusTraversalGroupScope>();
     assert(() {
       if (inherited == null) {
         throw FlutterError(
@@ -1574,7 +1574,7 @@ class FocusTraversalGroup extends StatefulWidget {
   ///    ancestor is found.
   static FocusTraversalPolicy? maybeOf(BuildContext context) {
     assert(context != null);
-    final _FocusTraversalGroupMarker? inherited = context.dependOnInheritedWidgetOfExactType<_FocusTraversalGroupMarker>();
+    final _FocusTraversalGroupScope? inherited = context.dependOnInheritedWidgetOfExactType<_FocusTraversalGroupScope>();
     return inherited?.policy;
   }
 
@@ -1612,7 +1612,7 @@ class _FocusTraversalGroupState extends State<FocusTraversalGroup> {
 
   @override
   Widget build(BuildContext context) {
-    return _FocusTraversalGroupMarker(
+    return _FocusTraversalGroupScope(
       policy: widget.policy,
       focusNode: focusNode!,
       child: Focus(
@@ -1629,8 +1629,8 @@ class _FocusTraversalGroupState extends State<FocusTraversalGroup> {
 }
 
 // A "marker" inherited widget to make the group faster to find.
-class _FocusTraversalGroupMarker extends InheritedWidget {
-  const _FocusTraversalGroupMarker({
+class _FocusTraversalGroupScope extends InheritedWidget {
+  const _FocusTraversalGroupScope({
     required this.policy,
     required this.focusNode,
     required super.child,

packages/flutter/lib/src/widgets/shortcuts.dart

@@ -1279,8 +1279,8 @@ class ShortcutRegistry with ChangeNotifier {
   ///    it doesn't find a [ShortcutRegistrar] ancestor.
   static ShortcutRegistry of(BuildContext context) {
     assert(context != null);
-    final _ShortcutRegistrarMarker? inherited =
-      context.dependOnInheritedWidgetOfExactType<_ShortcutRegistrarMarker>();
+    final _ShortcutRegistrarScope? inherited =
+      context.dependOnInheritedWidgetOfExactType<_ShortcutRegistrarScope>();
     assert(() {
       if (inherited == null) {
         throw FlutterError(
@@ -1315,8 +1315,8 @@ class ShortcutRegistry with ChangeNotifier {
   ///    [ShortcutRegistrar] ancestor.
   static ShortcutRegistry? maybeOf(BuildContext context) {
     assert(context != null);
-    final _ShortcutRegistrarMarker? inherited =
-      context.dependOnInheritedWidgetOfExactType<_ShortcutRegistrarMarker>();
+    final _ShortcutRegistrarScope? inherited =
+      context.dependOnInheritedWidgetOfExactType<_ShortcutRegistrarScope>();
     return inherited?.registry;
   }
 
@@ -1433,7 +1433,7 @@ class _ShortcutRegistrarState extends State<ShortcutRegistrar> {
 
   @override
   Widget build(BuildContext context) {
-    return _ShortcutRegistrarMarker(
+    return _ShortcutRegistrarScope(
       registry: registry,
       child: Shortcuts.manager(
         manager: manager,
@@ -1443,16 +1443,16 @@ class _ShortcutRegistrarState extends State<ShortcutRegistrar> {
   }
 }
 
-class _ShortcutRegistrarMarker extends InheritedWidget {
-  const _ShortcutRegistrarMarker({
+class _ShortcutRegistrarScope extends InheritedWidget {
+  const _ShortcutRegistrarScope({
     required this.registry,
     required super.child,
   });
 
   final ShortcutRegistry registry;
 
   @override
-  bool updateShouldNotify(covariant _ShortcutRegistrarMarker oldWidget) {
+  bool updateShouldNotify(covariant _ShortcutRegistrarScope oldWidget) {
     return registry != oldWidget.registry;
   }
 }