VirtualDropdownList<T> class
🚀 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
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- VirtualDropdownList
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 → Color?
-
final
- borderRadius → BorderRadius?
-
final
- bufferSize → int
-
final
- elevation → double?
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- highlightedItem → T?
-
final
- itemBuilder → Widget Function(BuildContext context, T item, bool isHighlighted)
-
final
- itemHeight → double
-
final
-
items
→ List<
T> -
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- maxHeight → double
-
final
- onItemTapped → dynamic Function(T item)?
-
final
- padding → EdgeInsetsGeometry?
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< VirtualDropdownList< T> > -
Creates the mutable state for this widget at a given location in the tree.
override
-
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited