Show a JavaFX dialog that can be cancelled with the given title and content . - Java JavaFX

Java examples for JavaFX:Dialog


Show a JavaFX dialog that can be cancelled with the given title and content .

Demo Code

/*/* ww  w. java  2 s  .  com*/
     * Copyright 2015 Thierry Wasylczenko
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
import javafx.scene.Node;
import javafx.scene.control.Alert;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.stage.Stage;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
import java.util.logging.Level;
import java.util.logging.Logger;

public class Main{
    private static final Logger LOGGER = Logger
         * Show a dialog that can be cancelled with the given {@code title} and {@code content}. The method returns the
         * answer of the user which can be {@link javafx.scene.control.ButtonType#CANCEL} or
         * {@link javafx.scene.control.ButtonType#OK}.
         * @param title The title of the dialog.
         * @param content The content of the dialog.
         * @return The answer of the user or {@code null} if no answer has been made.
        public static ButtonType showCancellableDialog(final String title,
                final Node content) {
            return displayDialog(buildDialog(title, content, ButtonType.CANCEL,
         * Show and wait for the response of the given {@code dialog}. This method ensures the dialog is displayed in the
         * JavaFX application thread.
         * @param dialog The dialog to show.
         * @return The answer of the user or {@code null} if no answer has been made.
        private static ButtonType displayDialog(Dialog<ButtonType> dialog) {
    Optional<ButtonType> response = null;

    if(dialog != null) {
        final FutureTask<Optional<ButtonType>> future = new FutureTask<>(() -> dialog.showAndWait());;
        try {
            response = future.get();
        } catch (InterruptedException e) {
        } catch (ExecutionException e) {

    return response != null && response.isPresent() ? response.get() : null;
         * Build a {@link javafx.scene.control.Dialog Dialog} object. This method ensures the dialog is created in a JavaFX
         * application thread. If the dialog can not be created then {@code null} is returned.
         * @param title The title of the Dialog
         * @param content The content of the Dialog
         * @param buttons The type of buttons the Dialog will contain.
         * @return A well created Dialog or {@code null} if an error occurred during the creation of the Dialog.
        private static Dialog buildDialog(final String title, final Node content, final ButtonType ... buttons) {
    final FutureTask<Dialog> future = new FutureTask<>(() -> {
        final Dialog dialog = new Dialog();

        return dialog;

    Dialog dialog = null;
    try {
        dialog = future.get();
    } catch (InterruptedException | ExecutionException e) {
        LOGGER.log(Level.SEVERE, "Can not build a Dialog", e);

    return dialog;

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