S2SingleSelected<T> class Null safety

Inheritance
Mixed in types

Constructors

S2SingleSelected({required T value, S2Choice<T>? choice, S2SingleSelectedResolver<T>? resolver, S2Validation<S2SingleChosen<T>>? validation, String? placeholder})
Default constructor

Properties

choice ↔ S2Choice<T>?
Returns a single selected S2Choice
covariantread / writeoverride
error ↔ String
Validation error message
read / writeinherited
group → String?
Returns choice.group
read-onlyinherited
hashCode → int
The hash code for this object.
read-onlyinherited
hasListeners → bool
Whether any listeners are currently registered.
read-onlyinherited
isEmpty → bool
Returns true if there are no values in the chosen data
read-onlyinherited
isNotEmpty → bool
Returns true if there is at least one value in the chosen data
read-onlyinherited
isNotResolved → bool
Returns true if one of choice or value is null
read-onlyinherited
isNotValid → bool
Returns true when the selection is not valid
read-onlyinherited
isResolved → bool
Returns true if choice is not null
read-onlyinherited
isResolving ↔ bool
Returns true when choice is resolving in the background
read / writeinherited
isValid → bool
Returns true when the selection is valid
read-onlyinherited
length → int
Returns the length of the choice
read-onlyinherited
placeholder ↔ String?
a String to return in toString if the title is empty
finalread / writeinherited-setteroverride-getter
resolver ↔ S2SingleSelectedResolver<T>?
Function to resolve choice from value
covariantread / writeoverride
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
subtitle → String?
Returns choice.subtitle
read-onlyinherited
title → String?
Returns choice.title
read-onlyinherited
validation ↔ S2Validation<S2SingleChosen<T>>?
A function used to validate the selection
covariantfinalread / writeinherited-setteroverride-getter
value ↔ T
Returns choice.value
covariantread / writeoverride

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
has(S2Choice<T> choice) → bool
Returns true if the chosen contains the supplied choice item
inherited
hasAll(List<S2Choice<T>> choices) → bool
Returns `true if the chosen has every of the supplied choice items
inherited
hasAny(List<S2Choice<T>> choices) → bool
Returns true if the chosen has any of the supplied choice items
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
resolve({S2SingleSelectedResolver<T>? defaultResolver}) → void
Resolve choice from value using user defined resolver, or fallback to defaultResolver if resolver is not defined
override
toString() → String
A string representation of this object.
override
toWidget() → Widget
Return a Text widget from toString
inherited
validate() → void
Validate the selection
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited