package de.fhg.iwes.javafx.test;

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.ScrollPane.ScrollBarPolicy;
import javafx.scene.effect.DropShadow;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.StrokeType;
import javafx.stage.Stage;
import javafx.util.Duration;

public class JavaFxScrollPanePerformance extends Application {

	public static void main(String[] args) {
		Application.launch(JavaFxScrollPanePerformance.class, args);
	}

	@Override
	public void start(final Stage primaryStage) throws Exception {
		// Set up stage
		primaryStage.setTitle("JavaFX 2.0 beta build 38");
		final Group root = new Group();
		final Scene scene = new Scene(root, 650, 600);
		primaryStage.setScene(scene);
		primaryStage.setVisible(true);

		final ScrollPane scrollPane = new ScrollPane();
		scrollPane.setLayoutX(50);
		scrollPane.setLayoutY(50);
		scrollPane.setPrefSize(550, 450);
		scrollPane.setPannable(true);
		scrollPane.setVbarPolicy(ScrollBarPolicy.NEVER);
		root.getChildren().add(scrollPane);

		Group scrollPaneContent = new Group();
		scrollPaneContent.setTranslateX(5);
		scrollPaneContent.setTranslateY(5);
		scrollPane.setContent(scrollPaneContent);

		Double yPosition = 0d;

		for (int i = 0; i < 2000; i++) {
			Rectangle rect = new Rectangle(510, 70, Color.WHITE);
			rect.setStroke(Color.BLACK);
			rect.setStrokeWidth(2);
			rect.setStrokeType(StrokeType.OUTSIDE);
			rect.setArcWidth(20);
			rect.setArcHeight(20);
			rect.setEffect(new DropShadow());
			rect.setLayoutY(yPosition);
			scrollPaneContent.getChildren().add(rect);

			Label label = new Label("Item: " + i);
			label.setLayoutX(20);
			label.setLayoutY(yPosition + 10);
			scrollPaneContent.getChildren().add(label);

			yPosition += 86;
		}

		Button button1 = new Button("Scroll down");
		button1.setLayoutX(50);
		button1.setLayoutY(530);
		button1.setOnAction(new EventHandler<ActionEvent>() {
			@Override
			public void handle(ActionEvent arg0) {
				Double oldVvalue = scrollPane.getVvalue();
				Double newVvalue = oldVvalue + 0.0005;
				scrollPane.setVvalue(newVvalue);
			}
		});
		root.getChildren().add(button1);

		Button button2 = new Button("Scroll down animated (NOT WORKING)");
		button2.setLayoutX(250);
		button2.setLayoutY(530);
		button2.setOnAction(new EventHandler<ActionEvent>() {
			@Override
			public void handle(ActionEvent arg0) {
				Double oldVvalue = scrollPane.getVvalue();
				Double newVvalue = oldVvalue + 0.0005;
				KeyValue keyValue = new KeyValue(scrollPane.vvalueProperty(), newVvalue);
				KeyFrame keyFrame = new KeyFrame(Duration.valueOf(500), keyValue);
				Timeline timeline = new Timeline(30, keyFrame);
				timeline.play();
			}
		});
		root.getChildren().add(button2);

	}
}