react4j.internal.arez

Class IntrospectUtil

java.lang.Object

react4j.internal.arez.IntrospectUtil

@OmitType(unless="react4j.store_debug_data_as_state")
public final class IntrospectUtil
extends java.lang.Object

Utilities for introspecting the Arez components and runtime.

Method Summary

Modifier and Type	Method and Description
static void	collectDependencyDebugData(arez.Observer observer, jsinterop.base.JsPropertyMap<java.lang.Object> data) For the specified observer, collect all dependencies and record them in data to be emitted as debug data.
static java.lang.Object	getValue(arez.spy.ObservableValueInfo observableInfo) Return the value for specified observable.
static boolean	prepareStateUpdate(jsinterop.base.JsPropertyMap<java.lang.Object> newState, jsinterop.base.JsPropertyMap<java.lang.Object> currentState) Prepare the newState value to be updated given specified current state.

Methods inherited from class java.lang.Object

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

Method Detail

getValue

@Nullable
public static java.lang.Object getValue(@Nonnull
                                                  arez.spy.ObservableValueInfo observableInfo)

Return the value for specified observable. Exceptions are caught and types are converted to strings using Object.toString()

Parameters:

observableInfo - the observable.

Returns:

the value as a string.

collectDependencyDebugData

public static void collectDependencyDebugData(@Nonnull
                                              arez.Observer observer,
                                              @Nonnull
                                              jsinterop.base.JsPropertyMap<java.lang.Object> data)

For the specified observer, collect all dependencies and record them in data to be emitted as debug data.

Parameters:

observer - the observer.

data - the target in which to place debug data.

prepareStateUpdate

public static boolean prepareStateUpdate(@Nonnull
                                         jsinterop.base.JsPropertyMap<java.lang.Object> newState,
                                         @Nullable
                                         jsinterop.base.JsPropertyMap<java.lang.Object> currentState)

Prepare the newState value to be updated given specified current state. If no changes are required then return false.

Parameters:

newState - the new "state" of the component.

currentState - the current "state" of the component.

Returns:

true if newState needs to be saved to native component, false otherwise.