rx.javafx.sources.ObservableMapSource Maven / Gradle / Ivy
package rx.javafx.sources;
import javafx.collections.MapChangeListener;
import javafx.collections.ObservableMap;
import rx.Observable;
import rx.schedulers.JavaFxScheduler;
import rx.subscriptions.JavaFxSubscriptions;
import java.util.AbstractMap.SimpleEntry;
import java.util.Map.Entry;
public final class ObservableMapSource {
private ObservableMapSource() {}
public static Observable> fromObservableMap(final ObservableMap source) {
return Observable.create((Observable.OnSubscribe>) subscriber -> {
MapChangeListener listener = c -> subscriber.onNext(source);
source.addListener(listener);
subscriber.add(JavaFxSubscriptions.unsubscribeInEventDispatchThread(() -> source.removeListener(listener)));
}).startWith(source).subscribeOn(JavaFxScheduler.getInstance());
}
public static Observable> fromObservableMapAdds(final ObservableMap source) {
return Observable.create((Observable.OnSubscribe>) subscriber -> {
MapChangeListener listener = c -> {
if (c.wasAdded()) {
subscriber.onNext(new SimpleEntry(c.getKey(),c.getValueAdded()));
}
};
source.addListener(listener);
subscriber.add(JavaFxSubscriptions.unsubscribeInEventDispatchThread(() -> source.removeListener(listener)));
}).subscribeOn(JavaFxScheduler.getInstance());
}
public static Observable> fromObservableMapRemovals(final ObservableMap source) {
return Observable.create((Observable.OnSubscribe>) subscriber -> {
MapChangeListener listener = c -> {
if (c.wasRemoved()) {
subscriber.onNext(new SimpleEntry(c.getKey(),c.getValueRemoved()));
}
};
source.addListener(listener);
subscriber.add(JavaFxSubscriptions.unsubscribeInEventDispatchThread(() -> source.removeListener(listener)));
}).subscribeOn(JavaFxScheduler.getInstance());
}
public static Observable> fromObservableMapChanges(final ObservableMap source) {
return Observable.create((Observable.OnSubscribe>) subscriber -> {
MapChangeListener listener = c -> {
if (c.wasRemoved()) {
subscriber.onNext(new MapChange(c.getKey(),c.getValueRemoved(),Flag.REMOVED));
}
if (c.wasAdded()) {
subscriber.onNext(new MapChange(c.getKey(),c.getValueAdded(),Flag.ADDED));
}
};
source.addListener(listener);
subscriber.add(JavaFxSubscriptions.unsubscribeInEventDispatchThread(() -> source.removeListener(listener)));
}).subscribeOn(JavaFxScheduler.getInstance());
}
}