LxReactive<T> class abstract interface

The foundational interface for all reactive objects in the Levit ecosystem.

LxReactive unifies various reactive sources (variables, futures, streams) under a consistent API for observation and notification.

Available extensions

Properties

computedValue → T

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Alias for requireValue.
no setter
errorOrNull → Object?

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns the current error if the status is LxError, otherwise null.
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasValue → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Alias for isSuccess.
no setter
id → int
A unique runtime identifier for this reactive instance.
no setter
isError → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns true if the status is LxError.
no setter
isIdle → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns true if the status is LxIdle.
no setter
isLoading → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Alias for isWaiting.
no setter
isSuccess → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns true if the status is LxSuccess.
no setter
isWaiting → bool

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns true if the status is LxWaiting.
no setter
lastValue → T?

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns the LxStatus.lastValue (the most recent successful value).
no setter
name ↔ String?
An optional descriptive name for debugging and profiling.
getter/setter pair
ownerId ↔ String?
The registration key of the owning controller, if applicable.
getter/setter pair
requireValue → T

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Force-retrieves the current value if the status is LxSuccess.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
stackTraceOrNull → StackTrace?

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns the stack trace if the status is LxError, otherwise null.
no setter
stream → Stream<T>
A Stream that emits the latest value whenever it updates.
no setter
value → T
The current state of the reactive object.
no setter
valueOrNull → T?

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns the current value if the status is LxSuccess, otherwise null.
no setter
wait → Future<T>

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Returns a Future that completes when the operation reaches a terminal state.
no setter

Methods

addListener(void listener()) → void
Registers a synchronous listener to be called on every value update.
close() → void
Permanently closes the reactive object and releases all internal resources.
listen(void callback(T value)) → LxWorker<T>

Available on LxReactive<T>, provided by the LxReactiveWatchExtensions extension

Executes callback whenever this reactive value changes.
listen(void onSuccess(T value), {void onIdle()?, void onWaiting()?, void onError(Object error)?, dynamic onProcessingError(Object error, StackTrace stackTrace)?}) → LxWorker<LxStatus<T>>

Available on LxReactive<LxStatus<T>>, provided by the LxStatusReactiveExtensions extension

Specialized listen for async status that allows handling individual states.
named(String name) → R

Available on R, provided by the LxNamingExtension extension

Sets the debug name of this reactive object and returns it.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
refresh() → void
Triggers a notification without changing the value.
register(String ownerId) → R

Available on R, provided by the LxNamingExtension extension

Registers this reactive object with an owner (fluent API).
removeListener(void listener()) → void
Unregisters a previously added listener.
toString() → String
A string representation of this object.
inherited

Operators

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