About.java

package wf.util;

import java.io.IOException;

import javafx.event.EventHandler;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;
import wf.Main;
import wf.view.AboutController;

public class About {

	private AboutController aboutController = new AboutController();

	private AnchorPane about_ap = new AnchorPane();
	private FXMLLoader loader = new FXMLLoader();
	private Stage about_st = new Stage();

	private static final About INSTANCE = new About();

	public About() {

		try {

			loader.setLocation(Main.class.getResource("view/About.fxml"));

			about_ap = ((AnchorPane) loader.load());

			// Show the scene containing the root layout.
			final Scene about_sc = new Scene(about_ap);
			about_sc.getStylesheets().clear();
			about_sc.getStylesheets().add(Main.class.getResource("/wf/view/application.css").toExternalForm());


			about_st.setScene(about_sc);
		 	about_st.setResizable(false);
		 	about_st.initModality(Modality.APPLICATION_MODAL);
		 	about_st.setOnCloseRequest(new EventHandler<WindowEvent>() {

		 		@Override
		 		public void handle(WindowEvent event) {
			        event.consume();
			    }
			});

		 	setStage(about_st);

		} catch (IOException e) {

			e.printStackTrace();
		}
	}

	private void setStage(Stage stage) {

		this.about_st = stage;
	}

	public Stage getStage() {

		return about_st;
	}

	public void showStage() {

		aboutController = loader.<AboutController>getController();
		aboutController.getClass();

		about_st.showAndWait();
	}

	public static About getInstance() {

		return INSTANCE;
	}
}