io.dwak.reactor

Class ReactorComputation

java.lang.Object

io.dwak.reactor.ReactorComputation

public class ReactorComputation
extends java.lang.Object

A ReactorComputation object represents code that is repeatedly rerun in response to reactive data changes. Computations don't have return values; they just perform actions, such as rerendering a template on the screen. Computations are created using Reactor.autoRun(io.dwak.reactor.interfaces.ReactorComputationFunction). Use stop() to prevent further rerunning of a computation.

Method Summary

Modifier and Type	Method and Description
ReactorComputation	addInvalidateComputationFunction(ReactorInvalidateCallback callback) Registers a ReactorComputationFunction to run when this computation is next invalidated, or runs it immediately if the computation is already invalidated.
int	getId()
ReactorComputation	getParent()
void	invalidate() Invalidates this computation so that it will be rerun.
boolean	isConstructingComputation()
boolean	isErrored()
boolean	isFirstRun()
boolean	isInvalidated()
boolean	isRecomputing()
boolean	isStopped()
void	stop() Prevents this computation from rerunning.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

isStopped

public boolean isStopped()

isInvalidated

public boolean isInvalidated()

isErrored

public boolean isErrored()

isRecomputing

public boolean isRecomputing()

isConstructingComputation

public boolean isConstructingComputation()

getParent

public ReactorComputation getParent()

stop

public void stop()

Prevents this computation from rerunning.

invalidate

public void invalidate()

Invalidates this computation so that it will be rerun.

addInvalidateComputationFunction

public ReactorComputation addInvalidateComputationFunction(ReactorInvalidateCallback callback)

Registers a ReactorComputationFunction to run when this computation is next invalidated, or runs it immediately if the computation is already invalidated. The react is run exactly once and not upon future invalidations unless addInvalidateComputationFunction(io.dwak.reactor.interfaces.ReactorInvalidateCallback) is called again after the computation becomes valid again.

Parameters:

callback - Callback to run on invalidation

Returns:

ReactorComputation with the added invalidation callback

getId

public int getId()

isFirstRun

public boolean isFirstRun()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object