Fix typos / errors in doc comments (#38558)

packages/flutter/lib/src/gestures/arena.dart

@@ -33,7 +33,7 @@ abstract class GestureArenaMember {
   void rejectGesture(int pointer);
 }
 
-/// An interface to information to an arena.
+/// An interface to pass information to an arena.
 ///
 /// A given [GestureArenaMember] can have multiple entries in multiple arenas
 /// with different pointer ids.

packages/flutter/lib/src/gestures/binding.dart

@@ -88,7 +88,7 @@ mixin GestureBinding on BindingBase implements HitTestable, HitTestDispatcher, H
 
   /// Dispatch a [PointerCancelEvent] for the given pointer soon.
   ///
-  /// The pointer event will be dispatch before the next pointer event and
+  /// The pointer event will be dispatched before the next pointer event and
   /// before the end of the microtask but not within this function call.
   void cancelPointer(int pointer) {
     if (_pendingPointerEvents.isEmpty && !locked)

packages/flutter/lib/src/gestures/tap.dart

@@ -102,7 +102,7 @@ typedef GestureTapCancelCallback = void Function();
 ///
 /// Gesture recognizers take part in gesture arenas to enable potential gestures
 /// to be disambiguated from each other. This process is managed by a
-/// [GestureArenaManager] (q.v.).
+/// [GestureArenaManager].
 ///
 /// [TapGestureRecognizer] considers all the pointers involved in the pointer
 /// event sequence as contributing to one gesture. For this reason, extra

packages/flutter/lib/src/rendering/box.dart

@@ -1142,7 +1142,7 @@ class _IntrinsicDimensionsCacheEntry {
 /// [constraints] given by the parent to the child were tight constraints.)
 ///
 /// For [RenderBox] classes that do not inherit from [RenderProxyBox], once they
-/// have laid out their children, should also position them, by setting the
+/// have laid out their children, they should also position them, by setting the
 /// [BoxParentData.offset] field of each child's [parentData] object.
 ///
 /// #### Layout of non-RenderBox children
@@ -2076,11 +2076,11 @@ abstract class RenderBox extends RenderObject {
   /// This [RenderBox] is responsible for checking whether the given position is
   /// within its bounds.
   ///
-  /// If transforming is necessary, [HitTestResult.addWithPaintTransform],
-  /// [HitTestResult.addWithPaintOffset], or [HitTestResult.addWithRawTransform] need
-  /// to be invoked by the caller to record the required transform operations
-  /// in the [HitTestResult]. These methods will also help with applying the
-  /// transform to `position`.
+  /// If transforming is necessary, [BoxHitTestResult.addWithPaintTransform],
+  /// [BoxHitTestResult.addWithPaintOffset], or
+  /// [BoxHitTestResult.addWithRawTransform] need to be invoked by the caller
+  /// to record the required transform operations in the [HitTestResult]. These
+  /// methods will also help with applying the transform to `position`.
   ///
   /// Hit testing requires layout to be up-to-date but does not require painting
   /// to be up-to-date. That means a render object can rely upon [performLayout]

packages/flutter/lib/src/rendering/layer.dart

@@ -90,7 +90,7 @@ abstract class Layer extends AbstractNode with DiagnosticableTreeMixin {
 
   /// Traverse the layer tree and compute if any subtree needs [addToScene].
   ///
-  /// A subtree needs [addToScene] if any of its layer needs [addToScene].
+  /// A subtree needs [addToScene] if any of its layers need [addToScene].
   /// The [ContainerLayer] will override this to respect its children.
   @protected
   @visibleForTesting

packages/flutter/lib/src/rendering/object.dart

@@ -380,7 +380,7 @@ class PaintingContext extends ClipContext {
   ///
   /// * `needsCompositing` is whether the child needs compositing. Typically
   ///   matches the value of [RenderObject.needsCompositing] for the caller.
-  /// * `offset` is the offset from the origin of the canvas' coordinate system
+  /// * `offset` is the offset from the origin of the canvas's coordinate system
   ///   to the origin of the caller's coordinate system.
   /// * `clipRect` is rectangle (in the caller's coordinate system) to use to
   ///   clip the painting done by [painter].
@@ -1405,7 +1405,8 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
   ///
   /// Some subclasses of [RenderObject], notably [RenderBox], have other
   /// situations in which the parent needs to be notified if the child is
-  /// dirtied. Such subclasses override markNeedsLayout and either call
+  /// dirtied (e.g., if the child's intrinsic dimensions or baseline changes).
+  /// Such subclasses override markNeedsLayout and either call
   /// `super.markNeedsLayout()`, in the normal case, or call
   /// [markParentNeedsLayout], in the case where the parent needs to be laid out
   /// as well as the child.
@@ -1532,7 +1533,7 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
   ///
   /// This method is the main entry point for parents to ask their children to
   /// update their layout information. The parent passes a constraints object,
-  /// which informs the child as which layouts are permissible. The child is
+  /// which informs the child as to which layouts are permissible. The child is
   /// required to obey the given constraints.
   ///
   /// If the parent reads information computed during the child's layout, the
@@ -1836,7 +1837,8 @@ abstract class RenderObject extends AbstractNode with DiagnosticableTreeMixin im
   /// Mark the compositing state for this render object as dirty.
   ///
   /// This is called to indicate that the value for [needsCompositing] needs to
-  /// be recomputed during the next [flushCompositingBits] engine phase.
+  /// be recomputed during the next [PipelineOwner.flushCompositingBits] engine
+  /// phase.
   ///
   /// When the subtree is mutated, we need to recompute our
   /// [needsCompositing] bit, and some of our ancestors need to do the

packages/flutter/lib/src/scheduler/binding.dart

@@ -150,7 +150,7 @@ enum SchedulerPhase {
   /// Microtasks scheduled during the processing of transient callbacks are
   /// current executing.
   ///
-  /// This may include, for instance, callbacks from futures resulted during the
+  /// This may include, for instance, callbacks from futures resolved during the
   /// [transientCallbacks] phase.
   midFrameMicrotasks,
 

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

@@ -713,7 +713,7 @@ mixin WidgetsBinding on BindingBase, SchedulerBinding, GestureBinding, RendererB
   /// sent to the GPU.
   ///
   /// 8. The semantics phase: All the dirty [RenderObject]s in the system have
-  /// their semantics updated (see [RenderObject.semanticsAnnotator]). This
+  /// their semantics updated (see [RenderObject.assembleSemanticsNode]). This
   /// generates the [SemanticsNode] tree. See
   /// [RenderObject.markNeedsSemanticsUpdate] for further details on marking an
   /// object dirty for semantics.

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

@@ -44,7 +44,7 @@ typedef ScrollableWidgetBuilder = Widget Function(
 /// between the range of minChildSize and maxChildSize (as percentages of the
 /// parent container's height) as long as the builder creates a widget which
 /// uses the provided [ScrollController]. If the widget created by the
-/// [ScrollableWidgetBuilder] does not use provided [ScrollController], the
+/// [ScrollableWidgetBuilder] does not use the provided [ScrollController], the
 /// sheet will remain at the initialChildSize.
 ///
 /// By default, the widget will expand its non-occupied area to fill available

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

@@ -825,7 +825,7 @@ class FocusNode with DiagnosticableTreeMixin, ChangeNotifier {
 /// as the [focusedChild] of this node, adopting if it isn't already part of the
 /// focus tree.
 ///
-/// {@macro flutter.widgets.focusManager.lifecycle}
+/// {@macro flutter.widgets.focus_manager.focus.lifecycle}
 /// {@macro flutter.widgets.focus_manager.focus.keyEvents}
 ///
 /// See also:
@@ -999,7 +999,7 @@ enum FocusHighlightStrategy {
 /// See also:
 ///
 ///  * [FocusNode], which is a node in the focus tree that can receive focus.
-///  * [FocusScopeNode], which is an node in the focus tree used to collect
+///  * [FocusScopeNode], which is a node in the focus tree used to collect
 ///    subtrees into groups.
 ///  * [Focus.of], which provides the nearest ancestor [FocusNode] for a given
 ///    [BuildContext].

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

@@ -1246,8 +1246,8 @@ abstract class State<T extends StatefulWidget> extends Diagnosticable {
   /// ### Why is the [build] method on [State], and not [StatefulWidget]?
   ///
   /// Putting a `Widget build(BuildContext context)` method on [State] rather
-  /// putting a `Widget build(BuildContext context, State state)` method on
-  /// [StatefulWidget] gives developers more flexibility when subclassing
+  /// than putting a `Widget build(BuildContext context, State state)` method
+  /// on [StatefulWidget] gives developers more flexibility when subclassing
   /// [StatefulWidget].
   ///
   /// For example, [AnimatedWidget] is a subclass of [StatefulWidget] that
@@ -2569,7 +2569,7 @@ class BuildOwner {
 ///    state. When this happens, the framework will call [update] with the new
 ///    widget. The new widget will always have the same [runtimeType] and key as
 ///    old widget. If the parent wishes to change the [runtimeType] or key of
-///    the widget at this location in the tree, can do so by unmounting this
+///    the widget at this location in the tree, it can do so by unmounting this
 ///    element and inflating the new widget at this location.
 ///  * At some point, an ancestor might decide to remove this element (or an
 ///    intermediate ancestor) from the tree, which the ancestor does by calling
@@ -4411,7 +4411,7 @@ class InheritedElement extends ProxyElement {
   ///
   /// Subclasses can manage these values with [updateDependencies]
   /// so that they can selectively rebuild dependents in
-  /// [notifyDependents].
+  /// [notifyDependent].
   ///
   /// This method is typically only called in overrides of [updateDependencies].
   ///
@@ -4438,7 +4438,7 @@ class InheritedElement extends ProxyElement {
   /// null by default so that dependent elements are rebuilt unconditionally.
   ///
   /// Subclasses can manage these values with [updateDependencies]
-  /// so that they can selectively rebuild dependents in [notifyDependents].
+  /// so that they can selectively rebuild dependents in [notifyDependent].
   ///
   /// This method is typically only called in overrides of [updateDependencies].
   ///
@@ -4468,7 +4468,7 @@ class InheritedElement extends ProxyElement {
   /// [dependent].
   ///
   /// Subclasses can manage their own dependencies values so that they
-  /// can selectively rebuild dependents in [notifyDependents].
+  /// can selectively rebuild dependents in [notifyDependent].
   ///
   /// See also:
   ///

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

@@ -72,7 +72,7 @@ enum Orientation {
 /// Widgets whose layouts consume space defined by [viewInsets], [viewPadding],
 /// or [padding] should enclose their children in secondary MediaQuery
 /// widgets that reduce those properties by the same amount.
-/// The [removePadding], [removeViewPadding], and [removeInsets] methods are
+/// The [removePadding], [removeViewPadding], and [removeViewInsets] methods are
 /// useful for this.
 /// See also:
 ///

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

@@ -41,7 +41,7 @@ typedef NestedScrollViewHeaderSliversBuilder = List<Widget> Function(BuildContex
 /// their scroll positions being intrinsically linked.
 ///
 /// The most common use case for this widget is a scrollable view with a
-/// flexible [SliverAppBar] containing a [TabBar] in the header (build by
+/// flexible [SliverAppBar] containing a [TabBar] in the header (built by
 /// [headerSliverBuilder], and with a [TabBarView] in the [body], such that the
 /// scrollable view's contents vary based on which tab is visible.
 ///