TFormBuilder class

A responsive form builder with grid layout.

TFormBuilder provides automatic form layout with:

  • 12-column responsive grid system
  • Automatic field sizing based on breakpoints
  • Integration with TFormBase
  • Nested form support

Basic Usage

class UserForm extends TFormBase {
  final name = TFieldProp<String>('');
  final email = TFieldProp<String>('');

  @override
  List<TFormField> get fields => [
    TFormField.text(name, 'Name').size(6),
    TFormField.text(email, 'Email').size(6),
  ];
}

TFormBuilder(input: UserForm())

See also:

Inheritance
Available extensions

Constructors

TFormBuilder({Key? key, TFormBase? input, List<TFormField>? fields, double gapX = 16.0, double gapY = 26.0, VoidCallback? onValueChanged, IconData? icon, String? label, String? description, bool initiallyExpanded = false})
Creates a form builder.
const

Properties

description → String?
Optional sub title for the form.
final
fields → List<TFormField>?
Manual list of fields (alternative to input).
final
gapX → double
Horizontal spacing between fields.
final
gapY → double
Vertical spacing between fields.
final
hashCode → int
The hash code for this object.
no setterinherited
icon → IconData?
final
initiallyExpanded → bool
final
input → TFormBase?
The form model to build.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → String?
Optional title for the form.
final
onValueChanged → VoidCallback?
Callback fired when any field value changes.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

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.
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
center({bool when = true}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Center widget.
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
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