SplitPaneToggleTest.java

package application;

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.beans.property.DoubleProperty;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.SplitPane;
import javafx.scene.control.TitledPane;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Duration;

public class SplitPaneToggleTest extends Application
{

	@Override
	public void start(Stage primaryStage)
	{
		ToggleButton settings = new ToggleButton("Settings");

		SplitPane splitPane = new SplitPane();

		TitledPane titledPane = new TitledPane("Options", new Label("An option"));
		VBox settingsPane = new VBox(titledPane);
		settingsPane.setMinWidth(0);
		splitPane.getItems().addAll(new BorderPane(new Label("Main content")), settingsPane);

		DoubleProperty splitPaneDividerPosition = splitPane.getDividers().get(0).positionProperty();

		//update toggle button status if user moves divider:
		splitPaneDividerPosition.addListener((obs, oldPos, newPos) -> settings.setSelected(newPos.doubleValue() < 0.95));

		splitPaneDividerPosition.set(0.8);

		settings.setOnAction(event -> {
			KeyValue end;
			if(settings.isSelected())
			{
				//splitPane.setDividerPositions(0.8);
				end = new KeyValue(splitPaneDividerPosition, 0.8);
			}
			else
			{
				//splitPane.setDividerPositions(1.0);
				end = new KeyValue(splitPaneDividerPosition, 1.0);
			}
			new Timeline(new KeyFrame(Duration.seconds(0.5), end)).play();
		});

		BorderPane root = new BorderPane(splitPane, new HBox(settings), null, null, null);
		Scene scene = new Scene(root, 800, 600);
		primaryStage.setScene(scene);
		primaryStage.show();
	}

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