FormFieldState<T> class

The current state of a FormField. Passed to the FormFieldBuilder method for use in constructing the form field's widget.

Inheritance

Constructors

FormFieldState()

Properties

errorText String
The current validation error returned by the FormField.validator callback, or null if no errors have been triggered. This only updates when validate is called.
read-only
hasError bool
True if this field has any validation errors.
read-only
value → T
The current value of the form field.
read-only
context BuildContext
The location in the tree where this widget builds. [...]
read-only, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
mounted bool
Whether this State object is currently in a tree. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
widget FormField<T>
The current configuration. [...]
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
deactivate() → void
Called when this object is removed from the tree. [...]
didChange(T value) → void
Updates this field's state to the new value. Useful for responding to child widget changes, e.g. Slider's Slider.onChanged argument. [...]
initState() → void
Called when this object is inserted into the tree. [...]
reset() → void
Resets the field to its initial value.
save() → void
Calls the FormField's onSaved method with the current value.
setValue(T value) → void
Sets the value associated with this form field. [...]
@protected
validate() bool
Calls FormField.validator to set the errorText. Returns true if there were no errors.
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
didChangeDependencies() → void
Called when a dependency of this State object changes. [...]
@mustCallSuper, @protected, inherited
didUpdateWidget(FormField<T> oldWidget) → void
Called whenever the widget configuration changes. [...]
@mustCallSuper, @protected, inherited
dispose() → void
Called when this object is removed from the tree permanently. [...]
@mustCallSuper, @protected, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload. [...]
@mustCallSuper, @protected, inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed. [...]
@protected, inherited
toDiagnosticsNode({String name, DiagnosticsTreeStyle style }) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by toStringDeep. [...]
inherited
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this object.
inherited
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode. [...]
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited