LForm class

Creates a container for form fields. /// An optional container for grouping together multiple form field widgets (e.g. TextField widgets). The child argument must not be null.

Inheritance

Constructors

LForm({Key key, @required Widget child, LFormManager manager, bool autovalidate = false, WillPopCallback onWillPop, VoidCallback onChanged, VoidCallback onSubmit})
An optional container for grouping together multiple form field widgets (e.g. TextField widgets).
const

Properties

autovalidate bool
If true, form fields will validate using LValidator.valid and update their error text immediately after every change. Otherwise, you must call LFormState.validate to validate.
final
child Widget
The widget below this widget in the tree.
final
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
key Key
Controls how one widget replaces another widget in the tree.
final, inherited
manager LFormManager
Use this instead of GlobalKey<LFormState> for accessing LFormState
final
onChanged VoidCallback
Called when one of the form fields changes.
final
onSubmit VoidCallback
Called when form is submitted
final
onWillPop WillPopCallback
Enables the form to veto attempts by the user to dismiss the ModalRoute that contains the form.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() LFormState
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.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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.
@nonVirtual, inherited

Static Methods

of(BuildContext context) LFormState
Returns the closest LFormState which encloses the given context.