@Override
public void textChangedOnEditView(Observable<? extends String> observable) {
Log.d(TAG, "textChangedOnEditView");
observable
.filter(text -> text.length() >= 3)
.debounce(1, TimeUnit.SECONDS)
.map(text -> "RxJava " + text)
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
new Subscriber<String>() {
@Override
public void onCompleted() {
Log.d(TAG, "onCompleted");
}
@Override
public void onError(Throwable e) {
Log.d(TAG, "onError");
e.printStackTrace();
}
@Override
public void onNext(String s) {
Log.d(TAG, "onNext");
mView.setTextToTextView(s);
}
});
}
@Override
public Observable<NavajoStreamEvent> call(Observable<NavajoStreamEvent> input) {
return input.filter(
e ->
e.type() != NavajoEventTypes.NAVAJO_DONE
&& e.type() != NavajoEventTypes.NAVAJO_STARTED);
}
@Override
public Observable<T> call(Observable<DataEvent> observable) {
if (type != null) {
observable =
observable.filter(
new Func1<DataEvent, Boolean>() {
@Override
public Boolean call(DataEvent dataEvent) {
return dataEvent.getType() == type;
}
});
}
if (path != null) {
observable =
observable.filter(
new Func1<DataEvent, Boolean>() {
@Override
public Boolean call(DataEvent dataEvent) {
if (isPrefix) {
return dataEvent.getDataItem().getUri().getPath().startsWith(path);
} else {
return dataEvent.getDataItem().getUri().getPath().equals(path);
}
}
});
}
return observable.map(
new Func1<DataEvent, T>() {
@SuppressWarnings({"unchecked", "ThrowableResultOfMethodCallIgnored"})
@Override
public T call(DataEvent dataEvent) {
try {
ObjectInputStream objectInputStream =
new ObjectInputStream(
new ByteArrayInputStream(dataEvent.getDataItem().getData()));
return (T) objectInputStream.readObject();
} catch (Exception e) {
Exceptions.propagate(e);
return null;
}
}
});
}
private void renderView() {
// ****************************************
// RxAndroid + Lambda + method references approach
// ****************************************
mEdittextLambdaObservable = RxTextView.textChangeEvents(mLambdaEditText);
mCompositeSubscription.add(
mEdittextLambdaObservable
.filter(event -> event.text().toString().endsWith("test"))
.map(event -> event.text().toString())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(mLambdaTextView::setText));
// ****************************************
// RxAndroid approach
// ****************************************
mEdittextRxAndroidObservable = RxTextView.textChangeEvents(mRxAndroidEditText);
mCompositeSubscription.add(
mEdittextRxAndroidObservable
.filter(
new Func1<TextViewTextChangeEvent, Boolean>() {
@Override
public Boolean call(TextViewTextChangeEvent onTextChangeEvent) {
return onTextChangeEvent.text().toString().endsWith("test");
}
})
.map(
new Func1<TextViewTextChangeEvent, String>() {
@Override
public String call(TextViewTextChangeEvent onTextChangeEvent) {
return onTextChangeEvent.text().toString();
}
})
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
new Action1<String>() {
@Override
public void call(String filteredString) {
mRxAndroidTextView.setText(filteredString);
}
}));
}
private static void test3() {
log("simple map");
Observable.just("Test", "Me", "No").map(x -> x.length()).subscribe(Main::print);
println("");
log("map with count");
Observable.just("Test", "Me", "No").count().subscribe(Main::print);
println("");
Observable<Integer> distinctObsv = Observable.just(2, 2, 3, 3, 4, 5, 6, 7, 8, 9).distinct();
log("distinct & filter ");
distinctObsv.filter(x -> (x % 2 == 0)).subscribe(Main::print);
println("");
log("distinct & filter & skip & first");
distinctObsv.filter(x -> (x % 2 == 0)).skip(2).first().subscribe(Main::print);
println("");
log("distinct & filter & skip & last");
distinctObsv.filter(x -> (x % 2 == 0)).skip(2).last().subscribe(Main::print);
println("");
log("distinct & filter & take & last");
distinctObsv.filter(x -> (x % 2 == 0)).take(2).last().subscribe(Main::print);
println("");
log("map with reduce to get total length of strings \"Test\", \"Me\", \"No\"");
Observable.just("Test", "Me", "No")
.map(x -> x.length())
.reduce((x, y) -> x + y)
.subscribe(Main::print);
println("");
log("sum of 1,2,3,4,5 using reduce");
Observable.just(1, 2, 3, 4, 5).reduce((x, y) -> x + y).subscribe(Main::print);
println("");
log("get larget of seq 9,1,8,3,4,5 using reduce");
Observable.just(9, 1, 8, 3, 4, 5).reduce((x, y) -> x > y ? x : y).subscribe(Main::print);
println("");
}
/*default*/ static List<Flower> deleteAnyFutureFlowers(List<Flower> flowers) {
final List<Flower> flowersFromPast = Lists.newArrayList();
Observable<Flower> flowersObservable = Observable.from(flowers);
// look for Flowers with future dates
flowersObservable
.filter(flower -> flower.getDate().compareTo(new Date()) < 0)
.toList()
.subscribe(filteredFlowers -> flowersFromPast.addAll(filteredFlowers));
return flowersFromPast;
}
private void _setupViewBindings(
Button signinButton,
final TextView errorTextView,
MyAccountDataLoginState myAccountDataLoginState,
final EditText usernameField,
final EditText passwordField,
final RadioGroup institutionRadio,
Observable<MyAccountDataLoginState> myAccountDataLoginStateObservable) {
if (myAccountDataLoginState != null
&& myAccountDataLoginState.exception != null
&& errorTextView != null) {
String errorMessage = myAccountDataLoginState.exception.getMessage();
errorTextView.setText(errorMessage);
}
if (signinButton == null
|| errorTextView == null
|| usernameField == null
|| passwordField == null
|| institutionRadio == null) {
return; // quit early if we can't verify the state
}
if (myAccountDataLoginStateERRORObservableSubscription == null
|| myAccountDataLoginStateERRORObservableSubscription.isUnsubscribed()) {
myAccountDataLoginStateERRORObservableSubscription =
myAccountDataLoginStateObservable
.filter(
new Func1<MyAccountDataLoginState, Boolean>() {
@Override
public Boolean call(MyAccountDataLoginState myAccountDataLoginState) {
return (myAccountDataLoginState.type == MyAccountDataLoginStateType.ERROR)
|| (myAccountDataLoginState.type
== MyAccountDataLoginStateType.SIGNED_OUT);
}
})
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
new Action1<MyAccountDataLoginState>() {
@Override
public void call(MyAccountDataLoginState myAccountDataLoginState) {
if (myAccountDataLoginState.exception != null) {
errorTextView.setText(myAccountDataLoginState.exception.getMessage());
}
passwordField.setText("");
}
});
}
signInButton.setOnClickListener(null); // Ensures the function is idempotent
signinButton.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
if (_isInputValid(usernameField, passwordField, institutionRadio)) {
_clearErrorText(errorTextView);
userModel
.getSigninActivatePublishSubject()
.onNext(
new UserCredentials(
usernameField.getText().toString().trim(),
passwordField.getText().toString(),
_getInsitutionIdFromRadioView(institutionRadio)));
}
}
});
}
@Override
public Subscription uplink(Observable<T> rxData) {
return mChild.uplink(rxData.filter(x -> !mSuppressWrites));
}
/**
* If the {@link Observable} completes after emitting a single item that matches a predicate,
* return that item; if it emits more than one such item, throw an <code>IllegalArgumentException
* </code>; if it emits no items, return a default value.
*
* <p><img width="640"
* src="https://github.com/Netflix/RxJava/wiki/images/rx-operators/B.singleOrDefault.p.png">
*
* @param defaultValue a default value to return if the {@link Observable} emits no matching items
* @param predicate a predicate function to evaluate items emitted by the {@link Observable}
* @return the single item emitted by the {@link Observable} that matches the predicate, or the
* default value if no such items are emitted
* @see <a
* href="https://github.com/Netflix/RxJava/wiki/Blocking-Observable-Operators#single-and-singleordefault">RxJava
* Wiki: singleOrDefault()</a>
* @see <a
* href="http://msdn.microsoft.com/en-us/library/system.reactive.linq.observable.singleordefault.aspx">MSDN:
* Observable.SingleOrDefault</a>
*/
public T singleOrDefault(T defaultValue, Func1<? super T, Boolean> predicate) {
return from(o.filter(predicate)).singleOrDefault(defaultValue);
}
