TTransferList<T> class

A dual-list transfer shuttle component for moving items between source and target lists.

Ideal for admin scenarios such as role/permission assignment, user group management, column picker configurations, and batch multi-select workflows.

Inheritance
Available extensions

Constructors

TTransferList({Key? key, required List<T> sourceItems, required List<T> targetItems, required ValueChanged<List<T>> onTargetChanged, ValueChanged<List<T>>? onSourceChanged, String itemLabel(T item)?, String itemSubtitle(T item)?, Widget itemBuilder(BuildContext context, T item, bool isChecked)?, bool itemDisabled(T item)?, String sourceTitle = 'Available', String targetTitle = 'Selected', bool showSearch = true, bool showSelectAll = true, bool allowReordering = false, double height = 360.0, double boxWidth = 260.0})
const

Properties

allowReordering → bool
Whether to display Up / Down buttons to allow reordering the target list. Defaults to false.
final
boxWidth → double
Width of each list card. Defaults to 260.0.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
Fixed height of the transfer list containers. Defaults to 360.0.
final
itemBuilder → Widget Function(BuildContext context, T item, bool isChecked)?
Custom builder for item rows.
final
itemDisabled → bool Function(T item)?
Function to determine if an item is disabled from transfer.
final
itemLabel → String Function(T item)?
Function to extract the display string for an item. Defaults to item.toString().
final
itemSubtitle → String Function(T item)?
Function to extract an optional secondary subtitle/description for an item.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onSourceChanged → ValueChanged<List<T>>?
Optional callback fired when the source items list changes.
final
onTargetChanged → ValueChanged<List<T>>
Callback fired when the target items list changes (items transferred or reordered).
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showSearch → bool
Whether to show search filter fields at the top of each list. Defaults to true.
final
showSelectAll → bool
Whether to show "Select All" checkboxes in the list headers. Defaults to true.
final
sourceItems → List<T>
The collection of available items in the source pool.
final
sourceTitle → String
Title for the source list card. Defaults to "Available".
final
targetItems → List<T>
The collection of assigned / selected items in the target pool.
final
targetTitle → String
Title for the target list card. Defaults to "Selected".
final

Methods

box({double minW = 0.0, double minH = 0.0, double maxW = double.infinity, double maxH = double.infinity}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a ConstrainedBox to apply layout constraints.
center({bool when = true}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Center widget.
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<TTransferList<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
expanded({int flex = 1}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in an Expanded widget.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
padding([double left = 0.0, double top = 0.0, double right = 0.0, double bottom = 0.0]) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with flexible edge control.
paddingSymmetric({double h = 0.0, double v = 0.0}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with symmetric horizontal and vertical spacing.
size({double? w, double? h}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a SizedBox to apply fixed width and/or height.
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
visible(bool visible, {bool maintainState = false}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Visibility widget.
when(bool condition) → Widget

Available on Widget, provided by the WidgetX extension

Returns this widget if condition is true, otherwise returns SizedBox.shrink(). Usage: Text('Hello').when(isVisible)

Operators

operator ==(Object other) → bool
The equality operator.
inherited