/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
* the License for the specific language governing permissions and limitations under the License.
*/
package io.reactivex.internal.operators.observable;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.internal.disposables.
SequentialDisposable;
import io.reactivex.plugins.
RxJavaPlugins;
/**
* Delays the subscription to the main source until the other
* observable fires an event or completes.
* @param <T> the main type
* @param <U> the other value type, ignored
*/
public final class
ObservableDelaySubscriptionOther<T, U> extends
Observable<T> {
final
ObservableSource<? extends T>
main;
final
ObservableSource<U>
other;
public
ObservableDelaySubscriptionOther(
ObservableSource<? extends T>
main,
ObservableSource<U>
other) {
this.
main =
main;
this.
other =
other;
}
@
Override
public void
subscribeActual(final
Observer<? super T>
child) {
final
SequentialDisposable serial = new
SequentialDisposable();
child.
onSubscribe(
serial);
Observer<U>
otherObserver = new
DelayObserver(
serial,
child);
other.
subscribe(
otherObserver);
}
final class
DelayObserver implements
Observer<U> {
final
SequentialDisposable serial;
final
Observer<? super T>
child;
boolean
done;
DelayObserver(
SequentialDisposable serial,
Observer<? super T>
child) {
this.
serial =
serial;
this.
child =
child;
}
@
Override
public void
onSubscribe(
Disposable d) {
serial.
update(
d);
}
@
Override
public void
onNext(U
t) {
onComplete();
}
@
Override
public void
onError(
Throwable e) {
if (
done) {
RxJavaPlugins.
onError(
e);
return;
}
done = true;
child.
onError(
e);
}
@
Override
public void
onComplete() {
if (
done) {
return;
}
done = true;
main.
subscribe(new
OnComplete());
}
final class
OnComplete implements
Observer<T> {
@
Override
public void
onSubscribe(
Disposable d) {
serial.
update(
d);
}
@
Override
public void
onNext(T
value) {
child.
onNext(
value);
}
@
Override
public void
onError(
Throwable e) {
child.
onError(
e);
}
@
Override
public void
onComplete() {
child.
onComplete();
}
}
}
}