LicenceWindow.java

/**
 * Marabou - Audio Tagger
 * Copyright (C) 2012 - 2016 Jan-Hendrik Peters
 * https://github.com/hennr/marabou
 * Marabou is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 */
package com.github.marabou.ui.view;

import com.github.marabou.helper.AvailableImage;
import com.github.marabou.helper.ImageLoader;
import com.google.common.base.Charsets;
import com.google.common.io.Resources;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.RowLayout;

import java.io.IOException;
import java.net.URL;

import static com.github.marabou.helper.I18nHelper.i18n;

public class LicenceWindow {

    Display display = Display.getCurrent();
    private Shell shell = new Shell(display);

    public void showLicence() {

        shell.setText(i18n("Licence"));
        shell.setImage(new ImageLoader().getImage(AvailableImage.LOGO_SMALL));

        RowLayout rowLayout = new RowLayout(1);
        rowLayout.center = true;
        rowLayout.marginBottom = 10;
        rowLayout.marginTop = 10;
        rowLayout.marginLeft = 10;
        rowLayout.marginRight = 10;
        shell.setLayout(rowLayout);

        // close window on ESC
        shell.addListener(SWT.Traverse, new Listener() {
            @Override
            public void handleEvent(Event event) {
                if (event.detail == SWT.TRAVERSE_ESCAPE) {
                    shell.dispose();
                }
            }
        });

        // label
        Label label = new Label(shell, SWT.NONE);
        label.setAlignment(SWT.CENTER);

        URL url = Resources.getResource("licence.txt");
        String licenceText;
        try {
            licenceText = Resources.toString(url, Charsets.UTF_8);
        } catch (IOException e) {
            licenceText = "error reading licence file";
        }

        label.setText(licenceText);
        label.pack();

        // close button
        Button close = new Button(shell, SWT.NONE);
        close.setText(i18n("&Close"));
        close.addListener(SWT.Selection, new Listener() {
            @Override
            public void handleEvent(Event event) {
                shell.dispose();
            }
        });
        close.setFocus();
        close.pack();

        shell.pack();
        shell.open();

        // close also if display gets disposed
        while (!shell.isDisposed() && display.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
    }
}