BankAmountKeypad class

Large numeric keypad tuned for currency input.

The host app owns the current amount string and passes it in via amountText. Digit presses and delete events are surfaced via callbacks; the widget never mutates state itself.

BankAmountKeypad(
  amountText: _amount,
  currencyCode: 'GBP',
  onDigit: (d) => setState(() => _amount += d),
  onDelete: () => setState(() {
    if (_amount.isNotEmpty) {
      _amount = _amount.substring(0, _amount.length - 1);
    }
  }),
  onDecimalPoint: () => setState(() {
    if (!_amount.contains('.')) _amount += '.';
  }),
)
Inheritance

Constructors

BankAmountKeypad({required String amountText, required String currencyCode, required ValueChanged<String> onDigit, required VoidCallback onDelete, Key? key, VoidCallback? onDecimalPoint, NumeralStyle numeralStyle = NumeralStyle.western, double? maxAmount, bool enabled = true, BorderRadius? keyRadius, Color? keyColor, Color? keyForegroundColor, TextStyle? amountStyle, TextStyle? currencyStyle, TextStyle? keyTextStyle, IconData? deleteIcon, double? keyWidth, double? keyHeight, String deleteSemanticLabel = 'Delete', String decimalSemanticLabel = 'Decimal point', String? semanticLabel})
const

Properties

amountStyle → TextStyle?
Merged over the amount display style (theme numeralHero in onSurface).
final
amountText → String
Current formatted amount string shown in the display area.
final
currencyCode → String
ISO 4217 currency code, e.g. 'GBP', 'USD'.
final
currencyStyle → TextStyle?
Merged over the currency code style (BankTokens.headlineMedium in onSurfaceVariant).
final
decimalSemanticLabel → String
Semantics label of the decimal-point key. Defaults to 'Decimal point'.
final
deleteIcon → IconData?
Overrides the delete key glyph. Defaults to Icons.backspace_outlined.
final
deleteSemanticLabel → String
Semantics label of the delete key. Defaults to 'Delete'.
final
enabled → bool
When false, the entire keypad is rendered at 40 % opacity and does not respond to gestures.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
keyColor → Color?
Overrides the background color of each key. Defaults to the theme surfaceVariant.
final
keyForegroundColor → Color?
Overrides the digit, decimal, and delete glyph color on each key. Defaults to the theme onSurface.
final
keyHeight → double?
Overrides the height of each key. Defaults to 56.
final
keyRadius → BorderRadius?
Overrides the corner radius of each key. Defaults to the theme buttonRadius.
final
keyTextStyle → TextStyle?
Merged over each key label style (BankTokens.headlineMedium in onSurface).
final
keyWidth → double?
Overrides the width of each key. Defaults to 88.
final
maxAmount → double?
Optional upper bound; when the current parsed amount meets or exceeds this value, digit keys are rendered at reduced opacity. The host app remains responsible for enforcing the limit: this is a visual cue only.
final
numeralStyle → NumeralStyle
Numeral script used when displaying the amount.
final
onDecimalPoint → VoidCallback?
When non-null, the decimal-point key is active and this callback is invoked when the user taps it. When null, the cell is rendered as an empty placeholder.
final
onDelete → VoidCallback
Called when the user taps the delete/backspace key.
final
onDigit → ValueChanged<String>
Called with '0'–'9' when the user taps a digit key.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticLabel → String?
Overrides the semantics label of the amount display. Defaults to '<currencyCode> <amount>'.
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