package de.gebit.thilo;

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.concurrent.Service;
import javafx.concurrent.Task;
import javafx.concurrent.WorkerStateEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ChoiceBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class Example2App extends Application {

	@Override
	public void start(Stage primaryStage) throws Exception {
		primaryStage.setTitle("Example 2");

		final ChoiceBox<String> choiceBox = new ChoiceBox<>();

		ExampleService service = new ExampleService();
		service.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
			@Override
			public void handle(WorkerStateEvent aEvent) {
				ObservableList<String> tempValue = (ObservableList<String>) aEvent.getSource().getValue();
				choiceBox.setItems(tempValue);
			}
		});
		service.start();

		StackPane root = new StackPane();
		root.getChildren().add(choiceBox);
		primaryStage.setScene(new Scene(root, 300, 250));
		primaryStage.show();
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		launch(args);
	}

	public class ExampleService extends Service<ObservableList<String>> {
		@Override
		protected Task<ObservableList<String>> createTask() {
			return new ExampleTask();
		}
	}

	public class ExampleTask extends Task<ObservableList<String>> {
		@Override
		protected ObservableList<String> call() throws Exception {
			ObservableList<String> tempResult = FXCollections.observableArrayList();
			for (int i = 0; i < 10; i++) {
				tempResult.add("Item " + i);
			}
			System.out.println("Task ended.");
			return tempResult;
		}
	}
}