Dep

Dep allows creation of a dependent Var on another Var allowing conversion between the two. This can be useful for different representations of the same value. For example, in a graphical environment left, center, and right are all different representations of the value (horizontal position). Maintaining three distinct values while keeping them in-sync is painful. With Dep you can simply define one Var and two Dep values like:

val left: Var[Double] = Var(0.0) val width: Var[Double] = Var(0.0) val center: Dep[Double, Double] = Dep(left)(_ + (width / 2.0), _ - (width / 2.0)) val right: Dep[Double, Double] = Dep(left)(_ + width, _ - width)

Now, modification to left, center, or right will maintain the appropriate value for each without any additional boilerplate.

T: the type of value this Reactive receives
R: the type that this Dep receives

Linear Supertypes

Mutable[T], Stateful[T], Reactive[T], AnyRef, Any

Instance Constructors

new Dep(owner: Var[R], t2R: (T) ⇒ R, r2T: (R) ⇒ T)

Attributes
protected

Value Members

def !(future: Future[T])(implicit ec: ExecutionContext): Future[Unit]

Convenience functionality to assign the result of a future (upon completion) to this Channel
Convenience functionality to assign the result of a future (upon completion) to this Channel

Definition Classes
Mutable
final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
def &(that: Stateful[T]): Stateful[T]

Group multiple Statefuls together
Group multiple Statefuls together

Definition Classes
Stateful
def :=(f: ⇒ T): Unit

Convenience alternative to "set"
Convenience alternative to "set"

Definition Classes
Mutable
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def @=(f: T): Unit

Convenience alternative to "static"
Convenience alternative to "static"

Definition Classes
Mutable
def and(that: Stateful[T]): Stateful[T]

Group multiple Statefuls together
Group multiple Statefuls together

Definition Classes
Stateful
def apply(): T

Convenience wrapper around get
Convenience wrapper around get

Definition Classes
Stateful
final def asInstanceOf[T0]: T0

Definition Classes
Any
def attach(f: (T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

Convenience method to create a Reaction to attach to this Reactive
Convenience method to create a Reaction to attach to this Reactive
f
the function reaction
priority
the priority in comparison to other reactions (Defaults to Priority.Normal)
returns
created Reaction[T]

Definition Classes
Reactive
def attachAndFire(f: (T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

Convenience functionality to attach a Reaction and immediately fire the current state on the Reaction.
Convenience functionality to attach a Reaction and immediately fire the current state on the Reaction.
f
the function reaction
priority
the priority in comparison to other reactions (Defaults to Priority.Normal)
returns
Reaction[T]

Definition Classes
Stateful
def changes(f: (T, T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

Convenience method to create a Reaction to monitor changes to this Reactive
Convenience method to create a Reaction to monitor changes to this Reactive
f
the function reaction to receive changes
priority
the priority in comparison to other reactions (Defaults to Priority.Normal)
returns
created Reaction[T]

Definition Classes
Reactive
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def fire(value: T, previous: Option[T], reactions: List[Reaction[T]] = this.reactions()): ReactionStatus

Fires the value to the Reactions
Fires the value to the Reactions

Attributes
protected
Definition Classes
Reactive
def future(condition: (T) ⇒ Boolean = _ => true): Future[T]

Convenience method to create a Future[T] that will complete upon the next reaction that meets to supplied condition.
Convenience method to create a Future[T] that will complete upon the next reaction that meets to supplied condition.
condition
optional condition that must be true for this to fire (Defaults to accept anything)
returns
Future[T]

Definition Classes
Reactive
def get: T

Gets the current value
Gets the current value

Definition Classes
Dep → Stateful
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def on(f: ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

Convenience method to create a Reaction to monitor changes to this Reactive when you don't care about the actual value.
Convenience method to create a Reaction to monitor changes to this Reactive when you don't care about the actual value.
f
the function reaction to invoke in reaction to a value received
priority
the priority in comparison to other reactions (Defaults to Priority.Normal)
returns
created Reaction[T]

Definition Classes
Reactive
def once(f: (T) ⇒ Unit, condition: (T) ⇒ Boolean = _ => true, priority: Double = Priority.Normal): Reaction[T]

Convenience method to create a Reaction to monitor a single reaction based on an optional condition.
Convenience method to create a Reaction to monitor a single reaction based on an optional condition.
f
the function reaction
condition
optional condition that must be true for this to fire (Defaults to accept anything)
priority
the priority in comparison to other reactions (Defaults to Priority.Normal)
returns
created Reaction[T]

Definition Classes
Reactive
val owner: Var[R]
lazy val reactions: Reactions[T]

Reactions currently associated with this Reactive
Reactions currently associated with this Reactive

Definition Classes
Reactive
def set(f: ⇒ T): Unit

Sets the function evaluation representing the new value for this mutable entity
Sets the function evaluation representing the new value for this mutable entity

Definition Classes
Dep → Mutable
def static(f: T): Unit

Sets a static value representing the new value for this mutable entity
Sets a static value representing the new value for this mutable entity

Definition Classes
Mutable
def status: Option[ReactionStatus]

If the current thread is reacting to a value currently, status represents the status of the reaction.
If the current thread is reacting to a value currently, status represents the status of the reaction. This can be set to ReactionStatus.Stop in order to stop propagation. This can also be achieved via stopPropagation().

Definition Classes
Reactive
def status_=(status: ReactionStatus): Unit

Definition Classes
Reactive
def stopPropagation(): Unit

Shortcut functionality to call status = ReactionStatus.Stop
Shortcut functionality to call status = ReactionStatus.Stop

Definition Classes
Reactive
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
def update(f: ⇒ T): Unit

Convenience alternative to "set"
Convenience alternative to "set"

Definition Classes
Mutable
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object Dep | package reactify

class Dep[T, R] extends Reactive[T] with Stateful[T] with Mutable[T]

Instance Constructors

new Dep(owner: Var[R], t2R: (T) ⇒ R, r2T: (R) ⇒ T)

Value Members

def !(future: Future[T])(implicit ec: ExecutionContext): Future[Unit]

final def !=(arg0: Any): Boolean

final def ##(): Int

def &(that: Stateful[T]): Stateful[T]

def :=(f: ⇒ T): Unit

final def ==(arg0: Any): Boolean

def @=(f: T): Unit

def and(that: Stateful[T]): Stateful[T]

def apply(): T

final def asInstanceOf[T0]: T0

def attach(f: (T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

def attachAndFire(f: (T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

def changes(f: (T, T) ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

def fire(value: T, previous: Option[T], reactions: List[Reaction[T]] = this.reactions()): ReactionStatus

def future(condition: (T) ⇒ Boolean = _ => true): Future[T]

def get: T

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def on(f: ⇒ Unit, priority: Double = Priority.Normal): Reaction[T]

def once(f: (T) ⇒ Unit, condition: (T) ⇒ Boolean = _ => true, priority: Double = Priority.Normal): Reaction[T]

val owner: Var[R]

lazy val reactions: Reactions[T]

def set(f: ⇒ T): Unit

def static(f: T): Unit

def status: Option[ReactionStatus]

def status_=(status: ReactionStatus): Unit

def stopPropagation(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

def update(f: ⇒ T): Unit

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Mutable[T]

Inherited from Stateful[T]

Inherited from Reactive[T]

Inherited from AnyRef

Inherited from Any

Ungrouped