Packages

c

com.raquo.airstream.signal

SignalFromEventStream

class SignalFromEventStream[A] extends Signal[A] with SingleParentObservable[A, A] with InternalTryObserver[A]

Linear Supertypes
InternalTryObserver[A], SingleParentObservable[A, A], InternalObserver[A], Signal[A], Observable[A], AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. SignalFromEventStream
  2. InternalTryObserver
  3. SingleParentObservable
  4. InternalObserver
  5. Signal
  6. Observable
  7. AnyRef
  8. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new SignalFromEventStream(parent: EventStream[A], lazyInitialValue: => Try[A])

Type Members

  1. type Self[+T] = Signal[T]
    Definition Classes
    Signal → Observable

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def addInternalObserver(observer: InternalObserver[A]): Unit

    Child observable should call this method on its parents when it is started.

    Child observable should call this method on its parents when it is started. This observable calls onStart if this action has given it its first observer (internal or external).

    Attributes
    protected[airstream]
    Definition Classes
    Observable
  5. def addObserver(observer: Observer[A])(implicit owner: Owner): Subscription

    Subscribe an external observer to this observable

    Subscribe an external observer to this observable

    Definition Classes
    Observable
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def changes: EventStream[A]
    Definition Classes
    Signal
  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  9. def combineWith[AA >: A, B](otherSignal: Signal[B]): Signal[(AA, B)]
    Definition Classes
    Signal
  10. def compose[B](operator: (Signal[A]) => Signal[B]): Signal[B]

    operator

    Note: Must not throw!

    Definition Classes
    Signal
  11. def composeAll[B](changesOperator: (EventStream[A]) => EventStream[B], initialOperator: (Try[A]) => Try[B]): Signal[B]

    changesOperator

    Note: Must not throw!

    initialOperator

    Note: Must not throw!

    Definition Classes
    Signal
  12. def composeChanges[AA >: A](operator: (EventStream[A]) => EventStream[AA]): Signal[AA]

    operator

    Note: Must not throw!

    Definition Classes
    Signal
  13. def debugBreak(when: (A) => Boolean = _ => true): Self[A]
    Definition Classes
    Observable
  14. def debugLog(prefix: String = "event", when: (A) => Boolean = _ => true): Self[A]

    print events using println - use for Scala values

    print events using println - use for Scala values

    Definition Classes
    Observable
  15. def debugLogJs(prefix: String = "event", when: (A) => Boolean = _ => true): Self[A]

    print events using dom.console.log - use for JS values

    print events using dom.console.log - use for JS values

    Definition Classes
    Observable
  16. def debugSpy(fn: (A) => Unit): Self[A]
    Definition Classes
    Observable
  17. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  19. val externalObservers: ObserverList[Observer[A]]

    Note: Observer can be added more than once to an Observable.

    Note: Observer can be added more than once to an Observable. If so, it will observe each event as many times as it was added.

    Attributes
    protected[this]
    Definition Classes
    Observable
  20. final def fireError(nextError: Throwable, transaction: Transaction): Unit
    Attributes
    protected[this]
    Definition Classes
    Signal → Observable
  21. def fireTry(nextValue: Try[A], transaction: Transaction): Unit

    Signal propagates only if its value has changed

    Signal propagates only if its value has changed

    Attributes
    protected[this]
    Definition Classes
    Signal → Observable
  22. final def fireValue(nextValue: A, transaction: Transaction): Unit
    Attributes
    protected[this]
    Definition Classes
    Signal → Observable
  23. def flatMap[B, Inner[_], Output[+_] <: Observable[_]](compose: (A) => Inner[B])(implicit strategy: FlattenStrategy[Self, Inner, Output]): Output[B]

    compose

    Note: guarded against exceptions

    Definition Classes
    Observable
    Annotations
    @inline()
  24. def fold[B](makeInitial: (A) => B)(fn: (B, A) => B): Signal[B]

    makeInitial

    Note: guarded against exceptions

    fn

    Note: guarded against exceptions

    Definition Classes
    Signal
  25. def foldRecover[B](makeInitial: (Try[A]) => Try[B])(fn: (Try[B], Try[A]) => Try[B]): Signal[B]

    makeInitial

    currentParentValue => initialValue Note: must not throw

    fn

    (currentValue, nextParentValue) => nextValue

    Definition Classes
    Signal
  26. def foreach(onNext: (A) => Unit)(implicit owner: Owner): Subscription

    Create an external observer from a function and subscribe it to this observable.

    Create an external observer from a function and subscribe it to this observable.

    Note: since you won't have a reference to the observer, you will need to call Subscription.kill() to unsubscribe

    Definition Classes
    Observable
  27. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  28. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  29. def initialValue: Try[A]

    Evaluate initial value of this Signal.

    Evaluate initial value of this Signal. This method must only be called once, when this value is first needed. You should override this method as def (no val or lazy val) to avoid holding a reference to the initial value beyond the duration of its relevance.

    Attributes
    protected
    Definition Classes
    SignalFromEventStream → Signal
  30. val internalObservers: ObserverList[InternalObserver[A]]

    Note: This is enforced to be a Set outside of the type system #performance

    Note: This is enforced to be a Set outside of the type system #performance

    Attributes
    protected[this]
    Definition Classes
    Observable
  31. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  32. def isStarted: Boolean
    Attributes
    protected[this]
    Definition Classes
    Observable
  33. def map[B](project: (A) => B): Signal[B]

    project

    Note: guarded against exceptions

    Definition Classes
    Signal → Observable
  34. def mapTo[B](value: => B): Self[B]

    value is passed by name, so it will be evaluated whenever the Observable fires.

    value is passed by name, so it will be evaluated whenever the Observable fires. Use it to sample mutable values (e.g. myInput.ref.value in Laminar).

    See also: mapToValue

    value

    Note: guarded against exceptions

    Definition Classes
    Observable
  35. def mapToValue[B](value: B): Self[B]

    value is evaluated only once, when this method is called.

    value is evaluated only once, when this method is called.

    See also: mapTo

    Definition Classes
    Observable
  36. val maybeLastSeenCurrentValue: UndefOr[Try[A]]
    Attributes
    protected[this]
    Definition Classes
    Signal
  37. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  38. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  39. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  40. def now(): A

    See comment for tryNow right above

    See comment for tryNow right above

    Attributes
    protected[airstream]
    Definition Classes
    Signal
    Exceptions thrown

    Exception if current value is an error

  41. def observe(implicit owner: Owner): SignalViewer[A]

    Add a noop observer to this signal to ensure that it's started.

    Add a noop observer to this signal to ensure that it's started. This lets you access .now and .tryNow on the resulting StrictSignal.

    You can use myStream.toWeakSignal.observe to read the last emitted value from event streams just as well.

    Definition Classes
    Signal
  42. def onAddedExternalObserver(observer: Observer[A]): Unit
    Attributes
    protected
    Definition Classes
    Signal → Observable
  43. final def onError(nextError: Throwable, transaction: Transaction): Unit

    Must not throw

    Must not throw

    Attributes
    protected[airstream]
    Definition Classes
    InternalTryObserver → InternalObserver
  44. final def onNext(nextValue: A, transaction: Transaction): Unit

    Must not throw

    Must not throw

    Attributes
    protected[airstream]
    Definition Classes
    InternalTryObserver → InternalObserver
  45. def onStart(): Unit

    This method is fired when this observable starts working (listening for parent events and/or firing its own events), that is, when it gets its first Observer (internal or external).

    This method is fired when this observable starts working (listening for parent events and/or firing its own events), that is, when it gets its first Observer (internal or external).

    onStart can potentially be called multiple times, the second time being after it has stopped (see onStop).

    Attributes
    protected[this]
    Definition Classes
    SingleParentObservable → Observable
  46. def onStop(): Unit

    This method is fired when this observable stops working (listening for parent events and/or firing its own events), that is, when it loses its last Observer (internal or external).

    This method is fired when this observable stops working (listening for parent events and/or firing its own events), that is, when it loses its last Observer (internal or external).

    onStop can potentially be called multiple times, the second time being after it has started again (see onStart).

    Attributes
    protected[this]
    Definition Classes
    SingleParentObservable → Observable
  47. def onTry(nextValue: Try[A], transaction: Transaction): Unit

    Must not throw

    Must not throw

    Attributes
    protected[airstream]
    Definition Classes
    SignalFromEventStream → InternalObserver
  48. val parent: EventStream[A]
    Attributes
    protected[this]
    Definition Classes
    SignalFromEventStream → SingleParentObservable
  49. def recover[B >: A](pf: PartialFunction[Throwable, Option[B]]): Signal[B]

    pf

    Note: guarded against exceptions

    Definition Classes
    Signal → Observable
  50. def recoverIgnoreErrors: Self[A]
    Definition Classes
    Observable
  51. def recoverToTry: Signal[Try[A]]

    Convert this to an observable that emits Failure(err) instead of erroring

    Convert this to an observable that emits Failure(err) instead of erroring

    Definition Classes
    Signal → Observable
  52. def removeExternalObserverNow(observer: Observer[A]): Unit
    Attributes
    protected[airstream]
    Definition Classes
    Observable
  53. def removeInternalObserverNow(observer: InternalObserver[A]): Unit

    Child observable should call Transaction.removeInternalObserver(parent, childInternalObserver) when it is stopped.

    Child observable should call Transaction.removeInternalObserver(parent, childInternalObserver) when it is stopped. This observable calls onStop if this action has removed its last observer (internal or external).

    Attributes
    protected[airstream]
    Definition Classes
    Observable
  54. def setCurrentValue(newValue: Try[A]): Unit
    Attributes
    protected[this]
    Definition Classes
    Signal
  55. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  56. def toString(): String
    Definition Classes
    AnyRef → Any
  57. val topoRank: Int
    Attributes
    protected[airstream]
    Definition Classes
    SignalFromEventStream → Observable
  58. def tryNow(): Try[A]

    Initial value is only evaluated if/when needed (when there are observers)

    Initial value is only evaluated if/when needed (when there are observers)

    Attributes
    protected[airstream]
    Definition Classes
    Signal
  59. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  60. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  61. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated @deprecated
    Deprecated

    (Since version ) see corresponding Javadoc for more information.

Inherited from InternalTryObserver[A]

Inherited from SingleParentObservable[A, A]

Inherited from InternalObserver[A]

Inherited from Signal[A]

Inherited from Observable[A]

Inherited from AnyRef

Inherited from Any

Ungrouped