FormFieldState<T> class
abstract
Abstract state management class for FormField elements.
Manages the validation errors, lifecycle context hooks, and registration of a FormField with its parent Form. It hooks into didChangeDependencies and dispose to coordinate dynamic inherited widget bindings with FormScope.
Constructors
Properties
- context → BuildContext
-
The location in the tree where this widget builds.
no setterinherited
- errorText → String?
-
Retrieves the validation error message if invalid; otherwise,
null.no setter - hasError → bool
-
Returns whether this field currently holds an active validation error.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- internalContext ↔ BuildContext?
-
Undocumented public member.
getter/setter pairinherited
-
internalWidget
↔ FormField<
T> ? -
Undocumented public member.
getter/setter pairinherited
- mounted → bool
-
Whether this State object is currently in a tree.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → T?
-
Retrieves the current value of the form field.
no setter
-
widget
→ FormField<
T> -
The current configuration.
no setterinherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
inherited
-
didChangeDependencies(
) → void -
Called when a dependency of this State object changes.
override
-
didUpdateWidget(
covariant FormField< T> oldWidget) → void -
Called whenever the widget configuration changes.
override
-
dispose(
) → void -
Called when this object is removed from the tree permanently.
override
-
initState(
) → void -
Called when this object is inserted into the tree.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
reassemble(
) → void -
Called when the application is reassembled during debugging (hot reload).
inherited
-
reset(
) → void - Resets the form field to its FormField.initialValue and clears any active errors.
-
setState(
VoidCallback fn) → void -
Notifies the framework that the internal state of this object has changed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
validate(
) → bool - Triggers field validation using FormField.validator.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited