NestedScrollForwarder class
A widget that provides scroll controllers to descendant widgets to enable nested scroll forwarding.
This widget creates a chain of scrollable containers where inner scrollables can forward scroll events to outer scrollables when they reach their boundaries.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- ProxyWidget
- InheritedWidget
- NestedScrollForwarder
Constructors
- NestedScrollForwarder({Key? key, ScrollController? verticalController, ScrollController? horizontalController, required Widget child})
-
const
Properties
- child → Widget
-
The widget below this widget in the tree.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- horizontalController → ScrollController?
-
The horizontal scroll controller to be shared with descendants
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- verticalController → ScrollController?
-
The vertical scroll controller to be shared with descendants
final
Methods
-
createElement(
) → InheritedElement -
Inflates this configuration to a concrete instance.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects 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, int wrapWidth = 65}) → 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
-
updateShouldNotify(
covariant NestedScrollForwarder oldWidget) → bool -
Whether the framework should notify widgets that inherit from this widget.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
getHorizontalController(
BuildContext context) → ScrollController? - Gets the horizontal scroll controller from the nearest ancestor
-
getVerticalController(
BuildContext context) → ScrollController? - Gets the vertical scroll controller from the nearest ancestor
-
maybeOf(
BuildContext context) → NestedScrollForwarder? - Finds the nearest NestedScrollForwarder ancestor in the widget tree