TransformBridgeSignal<N extends NodeInterface, S, V> class

A bridge that transforms a parent signal's value into a different type.

N is the parent node type.

S is the source signal type.

V is the transformed value type (can differ from S, value is nullable).

late final order = registerSignal(
  TransformBridgeSignal(
    select: (OrdersNode node) => node.orders,
    transform: (orders) => orders.firstWhereOrNull((o) => o.id == id),
    update: (node, value) {
      if (value == null) return;
      node.updateOrder(value);
    },
  ),
);
Inheritance
Implemented types

Constructors

TransformBridgeSignal({required BaseSignal<S> select(N node), required V transform(S value), void update(N node, V value)?, Key? key})

Properties

attachedNode ↔ Node
latefinalinherited
controller → StreamController<V>
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
hasValue → bool
True if the signal has a value assigned.
no setterinherited
isDisposed → bool
Returns true if this signal has already been disposed.
no setterinherited
key → Key?
final
readable → ReadableSignal<V>
This is the readable public exposed signal. It is created by the Signal constructor and is used to access the signal's value and stream.
latefinalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stream → Stream<V>
no setterinherited
streamTriggerImmediatly → Stream<V>
no setterinherited
unsafeValue ↔ V
getter/setter pairinherited
value ↔ V
getter/setter pairinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
connect(InheritedTrinityScope scope) → void
override
dispose() → void
Discards any resources used by the object.
override
emit(V newValue) → void
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent 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
toString() → String
A string representation of this object.
inherited

Operators

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