VirtualDropdownList<T> class

πŸš€ Virtual Dropdown List - Handles unlimited items with smooth 60fps scrolling

This widget only renders visible items plus a small buffer, making it possible to handle 100k+ items without performance issues or memory bloat.

Inheritance

Constructors

VirtualDropdownList.new({Key? key, required List<T> items, required Widget itemBuilder(BuildContext context, T item, bool isHighlighted), dynamic onItemTapped(T item)?, double itemHeight = 48.0, double maxHeight = 300.0, int bufferSize = 3, T? highlightedItem, EdgeInsetsGeometry? padding, Color? backgroundColor, BorderRadius? borderRadius, double? elevation})
const

Properties

backgroundColor β†’ Color?
final
borderRadius β†’ BorderRadius?
final
bufferSize β†’ int
final
elevation β†’ double?
final
hashCode β†’ int
The hash code for this object.
no setterinherited
highlightedItem β†’ T?
final
itemBuilder β†’ Widget Function(BuildContext context, T item, bool isHighlighted)
final
itemHeight β†’ double
final
items β†’ List<T>
final
key β†’ Key?
Controls how one widget replaces another widget in the tree.
finalinherited
maxHeight β†’ double
final
onItemTapped β†’ dynamic Function(T item)?
final
padding β†’ EdgeInsetsGeometry?
final
runtimeType β†’ Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() β†’ StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() β†’ State<VirtualDropdownList<T>>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() β†’ List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) β†’ void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) β†’ dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) β†’ DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) β†’ String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) β†’ String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) β†’ String
Returns a one-line detailed description of the object.
inherited
toStringShort() β†’ String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) β†’ bool
The equality operator.
inherited