InViewNotifierCustomScrollView class
builds a CustomScrollView and notifies when the widgets are on screen within a provided area.
A CustomScrollView lets you supply slivers directly to create various scrolling effects,
such as lists, grids, and expanding headers. For example, to create a scroll view
that contains an expanding app bar followed by a list and a grid, use a list of
three slivers: SliverAppBar, SliverList, and SliverGrid.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- InViewNotifierCustomScrollView
Constructors
-
InViewNotifierCustomScrollView({Key? key, required List<
Widget> slivers, List<String> initialInViewIds = const [], double endNotificationOffset = 0.0, VoidCallback? onListEndReached, Duration throttleDuration = const Duration(milliseconds: 200), Axis scrollDirection = Axis.vertical, required IsInViewPortCondition isInViewPortCondition, ScrollController? controller, ScrollPhysics? physics, bool reverse = false, bool? primary, bool shrinkWrap = false, Key? center, double anchor = 0.0})
Properties
- child → ScrollView
-
The widget that should be displayed in the
InViewNotifier.finalinherited - endNotificationOffset → double
-
The distance from the bottom of the list where the onListEndReached should be invoked.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
-
initialInViewIds
→ List<
String> -
The String list of ids of the child widgets that should be initialized as inView
when the list view is built for the first time.
finalinherited
- isInViewPortCondition → IsInViewPortCondition
-
The function that defines the area within which the widgets should be notified
as inView.
finalinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onListEndReached → VoidCallback?
-
The function that is invoked when the list scroll reaches the end
or the endNotificationOffset if provided.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollDirection → Axis
-
The axis along which the scroll view scrolls.
finalinherited
- throttleDuration → Duration
-
The duration to be used for throttling the scroll notification.
Defaults to 200 milliseconds.
finalinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → _InViewNotifierState -
Creates the mutable state for this widget at a given location in the tree.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNodeobjects describing this node's children.inherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
of(
BuildContext context) → InViewState?