BlocXFormDropdown<F extends BlocxBaseFormEntity<F, E>, P, E extends Enum, T> class

A DropdownButtonFormField pre-wired to a BlocxFormBloc field.

Dispatches BlocxFormEventUpdateData on every selection change and automatically displays any validation error set on formKey via the bloc.

Requires a BlocxFormBloc<F, P, E> ancestor provided via BlocProvider.

Usage

Prefer the BlocxFormWidgetState.dropdown helper over constructing this widget directly:

dropdown<String>(
  ProfileField.country,
  items: countries.map((c) => DropdownMenuItem(value: c.code, child: Text(c.name))).toList(),
)

Type parameters

  • F: The form entity. Must extend BlocxBaseFormEntity.
  • P: The payload type of the parent form.
  • E: The field enum type.
  • T: The value type of each DropdownMenuItem.
Inheritance

Constructors

BlocXFormDropdown({Key? key, required E formKey, required List<DropdownMenuItem<T>> items, T? value, BlocXDropdownOptions options = const BlocXDropdownOptions()})
const

Properties

formKey → E
The enum key that identifies this field in the form entity.
final
hashCode → int
The hash code for this object.
no setterinherited
items → List<DropdownMenuItem<T>>
The list of items to display in the dropdown.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
options → BlocXDropdownOptions
Visual and layout options for the dropdown. Defaults to BlocXDropdownOptions with sensible defaults.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → T?
Optional pre-selected value. Defaults to null.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<BlocXFormDropdown<F, P, E, 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