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. [...]
override
deactivate() → void
Called when this object is removed from the tree. [...]
override
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. [...]
override
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(covariant 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