com.pushtorefresh.storio.internal.ChangesBus Maven / Gradle / Ivy

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package com.pushtorefresh.storio.internal;

import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

import rx.Observable;

/**
 * FOR INTERNAL USAGE ONLY.
 * 
 * Thread-safe changes bus.
 */
public final class ChangesBus {

    @Nullable
    private final RxChangesBus rxChangesBus;

    public ChangesBus(boolean rxJavaIsInTheClassPath) {
        rxChangesBus = rxJavaIsInTheClassPath
                ? new RxChangesBus()
                : null;
    }

    public void onNext(@NonNull T next) {
        if (rxChangesBus != null) {
            rxChangesBus.onNext(next);
        }
    }

    @Nullable
    public Observable asObservable() {
        return rxChangesBus != null
                ? rxChangesBus.asObservable()
                : null;
    }
}