AppDropdownButtonFormField<T> class

Dropdown button form field that is modified to match the app's theme

The padding, radius, and behavior match the high-fidelity designs for Kohler Energy apps.

This app also adds an extra empty child in the dropdown if emptyItemChild is provided, matching the behavior of high-fidelity designs. It will be disabled unless the type parameter is nullable.

Inheritance

Constructors

AppDropdownButtonFormField({Key? key, T? value, required List<DropdownMenuItem<T>>? items, DropdownButtonBuilder? selectedItemBuilder, required ValueChanged<T?>? onChanged, Widget? emptyItemChild, Widget? hint, Widget? disabledHint, VoidCallback? onTap, FocusNode? focusNode, bool autofocus = false, InputDecoration? decoration, FormFieldSetter<T>? onSaved, FormFieldValidator<T>? validator, AutovalidateMode? autovalidateMode, bool alwaysHideIcon = false})
const

Properties

alwaysHideIcon → bool
final
autofocus → bool
final
autovalidateMode → AutovalidateMode?
final
decoration → InputDecoration?
final
disabledHint → Widget?
final
emptyItemChild → Widget?
Child of the dropdown item representing an empty or null value
final
focusNode → FocusNode?
final
hashCode → int
The hash code for this object.
no setterinherited
hint → Widget?
final
items → List<DropdownMenuItem<T>>?
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onChanged → ValueChanged<T?>?
final
onSaved → FormFieldSetter<T>?
final
onTap → VoidCallback?
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectedItemBuilder → DropdownButtonBuilder?
final
validator → FormFieldValidator<T>?
final
value → T?
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
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}) → 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