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Notification doc fixes (#87767)

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Ian Hickson 2021-08-11 14:32:06 -07:00 committed by GitHub
parent 4b538751b1
commit 8d89632fdd
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1 changed files with 12 additions and 12 deletions
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24
packages/flutter/lib/src/widgets/notification_listener.dart
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@ -14,9 +14,20 @@ import 'framework.dart';
/// [NotificationListener] is useful when listening scroll events
/// in [ListView],[NestedScrollView],[GridView] or any Scrolling widgets.
/// Used by [NotificationListener.onNotification].
typedef NotificationListenerCallback<T extends Notification> = bool Function(T notification);
/// A notification that can bubble up the widget tree.
///
/// You can determine the type of a notification using the `is` operator to
/// check the [runtimeType] of the notification.
///
/// To listen for notifications in a subtree, use a [NotificationListener].
///
/// To send a notification, call [dispatch] on the notification you wish to
/// send. The notification will be delivered to any [NotificationListener]
/// widgets with the appropriate type parameters that are ancestors of the given
/// [BuildContext].
///
/// {@tool dartpad --template=stateless_widget_material}
///
/// This example shows a [NotificationListener] widget
@ -89,17 +100,6 @@ typedef NotificationListenerCallback<T extends Notification> = bool Function(T n
/// * [ScrollEndNotification] which returns the end position of scrolling.
/// * [NestedScrollView] which creates a nested scroll view.
///
/// A notification that can bubble up the widget tree.
///
/// You can determine the type of a notification using the `is` operator to
/// check the [runtimeType] of the notification.
///
/// To listen for notifications in a subtree, use a [NotificationListener].
///
/// To send a notification, call [dispatch] on the notification you wish to
/// send. The notification will be delivered to any [NotificationListener]
/// widgets with the appropriate type parameters that are ancestors of the given
/// [BuildContext].
abstract class Notification {
/// Abstract const constructor. This constructor enables subclasses to provide
/// const constructors so that they can be used in const expressions.