ItemSelectionList<T> class

A list where the user can navigate between its items and select one of them.

Includes the following keyboard selection behaviors:

  • Pressing UP/DOWN moves the "active" item selection up/down.
  • Pressing UP with the first item active moves the active item selection to the last item.
  • Pressing DOWN with the last item active moves the active item selection to the first item.
  • Pressing ENTER selects the currently active item.
Inheritance

Constructors

ItemSelectionList({Key? key, required T? value, required List<T> items, Axis axis = Axis.vertical, required SelectableListItemBuilder<T> itemBuilder, IndexedWidgetBuilder? separatorBuilder, ValueChanged<T?>? onItemActivated, required ValueChanged<T?> onItemSelected, VoidCallback? onCancel, FocusNode? focusNode})
const

Properties

axis → Axis
Determines if the list should be displayed vertically or horizontally.
final
focusNode → FocusNode?
The FocusNode of the list.
final
hashCode → int
The hash code for this object.
no setterinherited
itemBuilder → SelectableListItemBuilder<T>
Builds each item in the popover list.
final
items → List<T>
The items that will be displayed in the popover list.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onCancel → VoidCallback?
Called when the user presses ESCAPE.
final
onItemActivated → ValueChanged<T?>?
Called when the user activates an item on the popover list.
final
onItemSelected → ValueChanged<T?>
Called when the user selects an item on the popover list.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
separatorBuilder → IndexedWidgetBuilder?
Builds a separator for each item in the list.
final
value → T?
The currently selected value or null if no item is selected.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<ItemSelectionList<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