import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

/**
 *
 * @author jfdenise
 */
public class TestComboBox extends Application {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        final ComboBox cb = new ComboBox();
        cb.showingProperty().addListener(new ChangeListener<Boolean>() {

            @Override
            public void changed(ObservableValue arg0, Boolean oldValue, Boolean newValue) {
                if (newValue) {                   
                    cb.getItems().setAll("" + System.currentTimeMillis());
                }
            }
        });
        cb.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent event) {
                System.out.println("OnAction called: " + cb.getValue());
            }
        });
        
        System.out.println("initial index: " + cb.getSelectionModel().getSelectedIndex());
        System.out.println("initial item: " + cb.getSelectionModel().getSelectedItem());
        
        cb.getSelectionModel().selectedIndexProperty().addListener(new InvalidationListener() {
            public void invalidated(Observable arg0) {
                System.out.println("new index: " + cb.getSelectionModel().getSelectedIndex());
            }
        });
        cb.getSelectionModel().selectedItemProperty().addListener(new InvalidationListener() {
            public void invalidated(Observable arg0) {
                System.out.println("new item: " + cb.getSelectionModel().getSelectedItem());
            }
        });
        
        cb.getItems().add("Toto");
        cb.setEditable(true);
        cb.setValue("Tata");
        
        StackPane root = new StackPane();
        root.getChildren().add(cb);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }
}