CustomDropdown<T> class

A styled dropdown widget with consistent theming

This generic widget allows for creating dropdown selectors with a consistent appearance matching other form elements.

Example:

// In a StatefulWidget
String _selectedValue = 'option1';

CustomDropdown<String>(
  label: 'Select Option',
  value: _selectedValue,
  items: [
    DropdownMenuItem(value: 'option1', child: Text('Option 1')),
    DropdownMenuItem(value: 'option2', child: Text('Option 2')),
    DropdownMenuItem(value: 'option3', child: Text('Option 3')),
  ],
  onChanged: (value) {
    setState(() {
      _selectedValue = value!;
    });
  },
)

Using with enum values:

enum PaymentMethod { creditCard, paypal, bankTransfer }

// In a StatefulWidget
PaymentMethod _selectedMethod = PaymentMethod.creditCard;

CustomDropdown<PaymentMethod>(
  label: 'Payment Method',
  value: _selectedMethod,
  items: PaymentMethod.values.map((method) {
    return DropdownMenuItem(
      value: method,
      child: Text(method.toString().split('.').last),
    );
  }).toList(),
  onChanged: (value) {
    setState(() {
      _selectedMethod = value!;
    });
  },
)

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• CustomDropdown

Constructors

CustomDropdown({Key? key, required String label, required T value, required List<DropdownMenuItem<T>> items, required ValueChanged<T?> onChanged})

Creates a CustomDropdown with the required parameters

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

items → List<DropdownMenuItem<T>>

List of available dropdown items

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

label → String

The label text displayed for this dropdown

final

onChanged → ValueChanged<T?>

Callback function when selection changes

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → T

The currently selected value

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, 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