ScrollUpdateNotification class
A notification that a Scrollable widget has changed its scroll position.
See also:
- OverscrollNotification, which indicates that a Scrollable widget has not changed its scroll position because the change would have caused its scroll position to go outside its scroll bounds.
- ScrollNotification, which describes the notification lifecycle.
- Inheritance
-
- Object
- Notification
- LayoutChangedNotification
- ScrollNotification
- ScrollUpdateNotification
Constructors
- ScrollUpdateNotification({required ScrollMetrics metrics, required BuildContext context, DragUpdateDetails? dragDetails, double? scrollDelta, int? depth})
- Creates a notification that a Scrollable widget has changed its scroll position.
Properties
- context → BuildContext?
-
The build context of the widget that fired this notification.
finalinherited
- depth → int
-
The number of viewports that this notification has bubbled through.
no setterinherited
- dragDetails → DragUpdateDetails?
-
If the Scrollable changed its scroll position because of a drag, the
details about that drag update.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- metrics → ScrollMetrics
-
A description of a Scrollable's contents, useful for modeling the state
of its viewport.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollDelta → double?
-
The distance by which the Scrollable was scrolled, in logical pixels.
final
Methods
-
debugFillDescription(
List< String> description) → void -
Add additional information to the given description for use by toString.
override
-
dispatch(
BuildContext? target) → void -
Start bubbling this notification at the given build context.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited