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• FXOptionDialog.java

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org.jpedal.examples.viewer.gui.javafx.dialog.FXOptionDialog Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * FXOptionDialog.java
 * ---------------
 */

package org.jpedal.examples.viewer.gui.javafx.dialog;

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

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.Button;
import javafx.stage.Stage;

/**
 * Option dialog allows for a user to specify a choice.
 * 

 * *_OPTION allows for a predefined option set to be used.
 * This will be overriden by passing the options array in.
 * The options array allows you to define your own input options.
 * 

 * The return value from showOptionsDialog() will go from 0 at the left to the maximum button count -1
 *
 * @author Simon
 */
public class FXOptionDialog extends FXMessageDialog {
    public static final int DEFAULT_OPTION = -1;
    public static final int YES_NO_OPTION = 0;
    public static final int YES_NO_CANCEL_OPTION = 1;
    public static final int OK_CANCEL_OPTION = 2;

    public static final int CLOSED_OPTION = -1;
    public static final int YES_OPTION = 0;
    public static final int OK_OPTION = 0;
    public static final int NO_OPTION = 1;
    public static final int CANCEL_OPTION = 2;

    private int choice = -1;

    public FXOptionDialog(final Stage parent, final String message, final String title, final int optionType, final Object[] options, final Object initialValue) {
        super(parent, message);

        setTitle(title);
        setupButtons(optionType, options, initialValue);

    }

    public FXOptionDialog(final Stage parent, final Object message, final String title, final int optionType, final Object[] options, final Object initialValue) {
        super(parent, message.toString());

        setTitle(title);
        setupButtons(optionType, options, initialValue);

    }

    private void setupButtons(final int optionType, final Object[] options, final Object initialValue) {
        final List buttons = new ArrayList();

        if (options == null) {
            if (optionType < DEFAULT_OPTION || optionType > OK_CANCEL_OPTION) {
                throw new RuntimeException("Option type must be one of FXOptionDialog.DEFAULT_OPTION, FXOptionDialog.YES_NO_OPTION, FXOptionDialog.YES_NO_CANCEL_OPTION or FXOptionDialog.OK_CANCEL_OPTION");
            }
            final Button yes = new Button("Yes");
            final Button ok = new Button("Ok");
            final Button no = new Button("No");
            final Button cancel = new Button("Cancel");

            yes.setOnAction(new EventHandler() {
                @Override
                public void handle(final ActionEvent t) {
                    choice = YES_OPTION;
                    positiveClose();
                }
            });
            ok.setOnAction(new EventHandler() {
                @Override
                public void handle(final ActionEvent t) {
                    choice = OK_OPTION;
                    positiveClose();
                }
            });
            no.setOnAction(new EventHandler() {
                @Override
                public void handle(final ActionEvent t) {
                    choice = NO_OPTION;
                    positiveClose();
                }
            });
            cancel.setOnAction(new EventHandler() {
                @Override
                public void handle(final ActionEvent t) {
                    choice = CANCEL_OPTION;
                    positiveClose();
                }
            });

            switch (optionType) {
                case DEFAULT_OPTION:
                    buttons.add(yes);
                    break;
                case YES_NO_OPTION:
                    buttons.add(yes);
                    buttons.add(no);
                    break;
                case YES_NO_CANCEL_OPTION:
                    buttons.add(yes);
                    buttons.add(no);
                    buttons.add(cancel);
                    break;
                case OK_CANCEL_OPTION:
                    buttons.add(ok);
                    buttons.add(cancel);
                    break;
                default:
                    break;
            }
        } else {
            for (int i = 0; i < options.length; i++) {
                final Button btn = new Button(options[i].toString());
                if (options[i].equals(initialValue)) {
                    btn.requestFocus();
                }
                final int val = i;
                btn.setOnAction(new EventHandler() {
                    @Override
                    public void handle(final ActionEvent t) {
                        choice = val;
                        positiveClose();
                    }
                });
                buttons.add(btn);
            }
        }

        getButtonGroup().getChildren().clear();
        getButtonGroup().getChildren().addAll(buttons);

    }

    public int showOptionDialog() {
        showAndWait();
        return choice;
    }

    @Override
    protected void positiveClose() {
        super.positiveClose();
        if (choice == -1) {
            choice = YES_OPTION;
        }
    }
}