SubDefault<T> constructor
SubDefault<T> ({
- required T? value,
- required SubValueCreate<
T> create, - SubValueKeys? keys,
- SubValueDispose<
T> ? dispose, - required SubValueBuild<
T> builder,
Creates a default value if the value passed in is null.
Implementation
SubDefault({
required T? value,
required SubValueCreate<T> create,
SubValueKeys? keys,
SubValueDispose<T>? dispose,
required SubValueBuild<T> builder,
}) : super(
create: () {
if (value != null) {
return _MaybeDefaultValue(value);
} else {
return _MaybeDefaultValue.asDefault(create());
}
},
keys: [value, ...?keys],
dispose: (value) {
if (value.isDefault) {
dispose?.call(value.value);
}
},
builder: (context, value) => builder(context, value.value),
);