DialogButtonArea

DialogButtonArea.java

import javafx.application.Application;
import javafx.geometry.BoundingBox;
import javafx.geometry.Bounds;
import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.scene.control.DialogPane;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.FlowPane;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Dominik on 6/1/2015.
 */
public class DialogButtonArea extends Application {

  private int missRadius = 10;

  @Override public void start(Stage primaryStage) throws Exception {
    final Dialog<ButtonType> dlg = new Dialog();

    dlg.setTitle("TITLE");

    Label label = new Label("LABEL");
    label.setId("label");
    TextArea textArea = new TextArea();
    textArea.setId("textarea");
    FlowPane pane = new FlowPane();
    pane.getChildren().addAll(label, textArea);
    dlg.getDialogPane().setContent(pane);
    dlg.setResizable(false);

    final DialogPane dlgPane = dlg.getDialogPane();

    dlgPane.getButtonTypes().add(ButtonType.OK);
    dlgPane.getButtonTypes().add(ButtonType.CANCEL);

    final Button btOk = (Button) dlg.getDialogPane()
        .lookupButton(ButtonType.OK);

    final Button btCancel = (Button) dlg.getDialogPane()
        .lookupButton(ButtonType.CANCEL);

    btOk.setId("okButton");
    btCancel.setId("cancelButton");

    List<Node> watchList = new ArrayList<Node>();

    watchList.add(textArea);
    watchList.add(label);
    watchList.add(btCancel);
    watchList.add(btOk);

    // show dialog
    dlgPane.getScene().getWindow()
        .addEventHandler(WindowEvent.WINDOW_SHOWN, shown -> {
          System.out.println("Change");
          dlgPane.getScene().getWindow()
              .addEventHandler(javafx.scene.input.MouseEvent.MOUSE_CLICKED,
                  event -> {
                    for (Node node : watchList) {
                      Bounds thisBound = node
                          .localToScene(node.getLayoutBounds());
                      Bounds thisBoundingBox = new BoundingBox(
                          thisBound.getMinX() - missRadius,
                          thisBound.getMinY() - missRadius, 0,
                          thisBound.getWidth() + 2 * missRadius,
                          thisBound.getHeight() + 2 * missRadius, 0);
                      if (thisBoundingBox
                          .contains(event.getSceneX(), event.getSceneY())) {
                        System.out
                            .println(node.getId() + " has been " + "missed.");
                      }
                    }
                  });
        });
    dlg.showAndWait();
  }
}