import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Stage;
import javafx.scene.text.TextAlignment;
import javafx.scene.text.Font;
import javafx.geometry.Pos;
import javafx.geometry.Insets;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.paint.Color;


import javafx.application.Platform;

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.event.Event;

import javafx.beans.value.*;  // ChangeListener


public class UIBspSpinner01 extends Application  {

    private ComboBox cbPizzaName = new ComboBox() ;
    private Spinner spGroesse = null ;
    private CheckBox chkMitZwiebel = new CheckBox("Mit Zwiebeln") ;
    private CheckBox chkMitMais = new CheckBox("Mit Mais") ;
    private TextField tErg = new TextField("") ;

    private  Button bnOk = new Button("Ok") ;
    private  Button bnEsc = new Button("Esc") ;

    
     @Override 
     public void start(Stage stage) {
            VBox root = new VBox(22);       
            root.setAlignment(Pos.CENTER);
            root.setFillWidth(true);


            cbPizzaName.getItems().add("Käse");
            cbPizzaName.getItems().add("Käse Schinken");
            cbPizzaName.getItems().add("Hawai");
            cbPizzaName.getItems().add("Salami / Schinken");
            cbPizzaName.getItems().add("Vegetarisch");
            cbPizzaName.getItems().add("Peperoni");
            cbPizzaName.getItems().add("Vier Jahreszeiten");
            cbPizzaName.getItems().add("Ei, ExtraKäse");
            cbPizzaName.setEditable(true);
            cbPizzaName.setPromptText("Bitte auswählen");
            cbPizzaName.setStyle("-fx-font: 22px \"Serif\";");

            HBox hbox = createChoiceBoxComboBoxSpinner(cbPizzaName , "Name der Pizza");
            root.getChildren().add(hbox);

            spGroesse = new Spinner(5.0, 30.0, 15.0, 0.5);
            spGroesse.setStyle("-fx-font: 22px \"Serif\";");
            hbox =  createChoiceBoxComboBoxSpinner(spGroesse, "Größe der Pizza");
            root.getChildren().add(hbox);

            spGroesse.valueProperty().addListener((obs, oldValue, newValue) -> showSpinnerGroesse(newValue));


            hbox = createButtonBase(chkMitZwiebel);
            root.getChildren().add(hbox);

            hbox = createButtonBase(chkMitMais );
            root.getChildren().add(hbox);



            hbox = createTextInputControl(tErg, "Ergebnis");
            root.getChildren().add(hbox);

            FlowPane boxpane = new FlowPane(20,20);    
            boxpane.setAlignment(Pos.CENTER);
            boxpane.setMaxWidth(Double.POSITIVE_INFINITY);
            root.getChildren().add(boxpane);

            bnOk.setFont(new Font("Courier New",22));            
            bnOk.setMaxWidth(Double.POSITIVE_INFINITY);
            bnOk.setOnAction(e->calc());
            boxpane.getChildren().add(bnOk);
            boxpane.setMargin(bnOk, new Insets(0, 10, 0, 10) );  // TRBL

            bnEsc.setFont(new Font("Courier New",22));            
            bnEsc.setMaxWidth(Double.POSITIVE_INFINITY);
            bnEsc.setOnAction(e->Platform.exit());
            boxpane.getChildren().add(bnEsc);
            boxpane.setMargin(bnEsc, new Insets(0, 10, 0, 10) );  // TRBL

            Scene scene= new Scene(root, 660, 400);
            stage.setTitle("UIBspSpinner01");        
            stage.setScene(scene);        
            stage.show();  
    }


    private void showSpinnerGroesse(Object obj) {
        System.out.println("SpinnerGroesse:  objindex: "+ obj);
   }


     private HBox createTextInputControl(TextInputControl control, String caption) {
            HBox hbox = new HBox(22);    
            hbox.setFillHeight(true);
            hbox.setMaxWidth(Double.POSITIVE_INFINITY);

            Label label = new Label(caption) ;
            label.setFont(new Font("Courier New",22));
            hbox.getChildren().add(label);
            hbox.setMargin(label, new Insets(5, 0, 0, 10) );  // TRBL


            control.setFont(new Font("Courier New",22));
            control.setMaxWidth(Double.POSITIVE_INFINITY);
            hbox.getChildren().add(control);
            hbox.setHgrow(control, Priority.ALWAYS);
            hbox.setMargin(control, new Insets(0, 10, 0, 10) );  // TRBL
            return hbox;
     }
     
     private HBox createChoiceBoxComboBoxSpinner(Control control, String caption) {
            HBox hbox = new HBox(22);    
            hbox.setFillHeight(true);
            hbox.setMaxWidth(Double.POSITIVE_INFINITY);

            Label label = new Label(caption) ;
            label.setFont(new Font("Courier New",22));
            hbox.getChildren().add(label);
            hbox.setMargin(label, new Insets(5, 0, 0, 10) );  // TRBL


            // control.setFont(new Font("Courier New",22));  // gibt es nicht ??
            control.setMaxWidth(Double.POSITIVE_INFINITY);
            hbox.getChildren().add(control);
            hbox.setHgrow(control, Priority.ALWAYS);
            hbox.setMargin(control, new Insets(0, 10, 0, 10) );  // TRBL
            return hbox;
     }

     private HBox createButtonBase(ButtonBase control) {
            HBox hbox = new HBox(22);    
            hbox.setFillHeight(true);
            hbox.setMaxWidth(Double.POSITIVE_INFINITY);

            control.setFont(new Font("Courier New",22));
            control.setMaxWidth(Double.POSITIVE_INFINITY);
            hbox.getChildren().add(control);
            hbox.setHgrow(control, Priority.ALWAYS);
            hbox.setMargin(control, new Insets(0, 10, 0, 10) );  // TRBL
            return hbox;
     }
     


      private void calc() {
       StringBuilder sb = new StringBuilder(100);
       String pizza = (String)cbPizzaName.getValue();
       if (pizza==null) {
           errorBox("Bitte geben Sie einen Pizzanamen ein","Hinweis");
           return;
       }
       sb.append(pizza);
       sb.append(":  ");


       Double groesse = (Double)spGroesse.getValue();
       if (groesse==null) {
           errorBox("Bitte waehlen Sie eine Groesse aus","Hinweis");
           return;
       }
       sb.append(groesse.toString());
       sb.append(":  ");

       if (chkMitZwiebel.isSelected()) {
         sb.append(",  mit Zwiebeln  ");
       }
       if (chkMitMais.isSelected()) {
         sb.append(",  mit Mais  ");
       }
  

      tErg.setText(sb.toString());
        
      }


 public void errorBox( String message, String title) {
         Dialog alert = new Alert(Alert.AlertType.ERROR,message);
         alert.setTitle(title);
         alert.setHeaderText(title);
         alert.setResizable(true);
         alert.show();
//        a.setContentText(content);
      } // ErrorBox
      public static void main(String[] argv) {       
              launch(argv);   
      } 
}