PopupWindowExample.java

package lwjgui;

import lwjgui.geometry.Insets;
import lwjgui.geometry.Pos;
import lwjgui.scene.Scene;
import lwjgui.scene.Window;
import lwjgui.scene.WindowHandle;
import lwjgui.scene.WindowManager;
import lwjgui.scene.WindowThread;
import lwjgui.scene.control.Button;
import lwjgui.scene.control.Label;
import lwjgui.scene.layout.BorderPane;
import lwjgui.scene.layout.StackPane;
import lwjgui.scene.layout.VBox;

public class PopupWindowExample extends LWJGUIApplication {
	public static final int WIDTH   = 320;
	public static final int HEIGHT  = 240;

	public static void main(String[] args) {
		launch(args);
	}

	@Override
	public void start(String[] args, Window window) {
		// Add background pane
		StackPane pane = new StackPane();
		
		// Create vertical box
		VBox vbox = new VBox();
		vbox.setSpacing(8);
		vbox.setAlignment(Pos.CENTER);
		pane.getChildren().add(vbox);

		// Create the button for the box
		Button button = new Button("Click Me!");
		button.setOnAction((event)-> {
			popup("Test Popup");
		});
		
		// Add the components
		vbox.getChildren().add(button);
		
		// Set the scene
		window.setScene(new Scene(pane, WIDTH, HEIGHT));
		window.show();
	}
	
	protected static void popup(String popup) {
		// Create a popup window
		WindowManager.runLater(() -> {
			// ManagedThread constructor must run in the main thread, we schedule it's
			// execution using the WindowManager.runLater function
			new WindowThread(300, 100, "Popup") {
				@Override
				protected void setupHandle(WindowHandle handle) {
					super.setupHandle(handle);
					handle.canResize(false);
				}
				@Override
				protected void init(Window window) {
					super.init(window);
					window.setCanUserClose(false);
					// Create root pane
					BorderPane root = new BorderPane();
					root.setPadding(new Insets(4,4,4,4));
					
					// Create a label
					Label l = new Label("Congratulations, You've won!");
					root.setCenter(l);
					
					// Create a button
					Button b = new Button("Claim prize");
					root.setBottom(b);
					b.setOnAction((event)-> {
						window.close();
					});
					
					// Display window
					window.setScene(new Scene(root, 250, 75));
					window.show();
				}
			}.start(); // Start the ManagedThread
		});
	}

	@Override
	protected void run() {
		//
	}
}