/*
 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
 */

package helloworld;


import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Popup;
import javafx.stage.Stage;

/**
 *
 * @author jcambon
 */
public class HelloPopupJC extends Application {

    private static int WIDTH = 300;
    private static int HEIGHT = 300;
    private static int X = 500;
    private static int Y = 500;
    private static int nbContent = 0;
    private Stage stage;

    @Override
    public void start(Stage stage) {
        this.stage = stage;
        stage.setTitle("Hello Popup");
        stage.setWidth(WIDTH);
        stage.setHeight(HEIGHT);
        stage.setX(X);
        stage.setX(Y);

        stage.setScene(createScene());
        stage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Application.launch(args);
    }

    private Group createRootGroup() {
        Group rootGroup = new Group();
        ObservableList<Node> content = rootGroup.getChildren();

        Rectangle rect = new Rectangle();
        rect.setWidth(WIDTH);
        rect.setHeight(HEIGHT);
        rect.setFill(Color.GRAY);
        content.add(rect);

        final Button showButton = new Button("Popup");
        showButton.setLayoutX(50);
        showButton.setLayoutY(50);
        showButton.setOnAction(new PopupActionHandler(showButton));
        content.add(showButton);

        return rootGroup;
    }

    private Scene createScene() {
        Scene scene = new Scene(createRootGroup());
        return scene;
    }

    private static Popup createPopup() {
        Popup popup = new Popup();

        final VBox vbox = new VBox(10);
        Button button = new Button("Add Content");
        vbox.getChildren().add(button);
        button.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent e) {
                nbContent++;
                Rectangle rect = new Rectangle(nbContent*10, nbContent*10);
                TextField tf = new TextField("Hello, how do you do ?");
                HBox hbox = new HBox(10);
                hbox.getChildren().addAll(rect, tf);
                vbox.getChildren().add(hbox);
            }
        });


        final StackPane sp = new StackPane();
        sp.getChildren().add(vbox);
        sp.setStyle("-fx-background-color: white;");
        popup.getContent().add(sp);
        popup.setAutoHide(true);

        return popup;
    }

    private final class PopupActionHandler
            implements EventHandler<ActionEvent> {

        private final Node popupParent;
        private final int popupX;
        private final int popupY;
        private Popup popup;

        public PopupActionHandler(Node popupParent) {
            this.popupParent = popupParent;
            this.popupX = X + WIDTH;
            this.popupY = Y + HEIGHT;
        }

        public void handle(final ActionEvent t) {
            if (popup == null) {
                popup = createPopup();
            }

            popup.show(popupParent, popupX, popupY);

        }
    }

}