de.huxhorn.lilith.swing.LicenseAgreementDialog.java Source code

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Here is the source code for de.huxhorn.lilith.swing.LicenseAgreementDialog.java

Source

/*
 * Lilith - a log event viewer.
 * Copyright (C) 2007-2016 Joern Huxhorn
 *
 * This program 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/>.
 */
package de.huxhorn.lilith.swing;

import de.huxhorn.sulky.io.IOUtilities;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.html.HTMLEditorKit;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LicenseAgreementDialog extends JDialog {
    private static final long serialVersionUID = -4349856392257012707L;
    private final Logger logger = LoggerFactory.getLogger(LicenseAgreementDialog.class);

    private boolean licenseAgreed;

    public LicenseAgreementDialog() {
        super((Frame) null, "License Agreement", true);
        setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                decline();
            }
        });
        licenseAgreed = false;
        initUI();
    }

    private void initUI() {
        JPanel content = new JPanel();
        content.setLayout(new BorderLayout());
        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));

        JTextPane licenseTextPane = new JTextPane();
        HTMLEditorKit htmlEditorKit = new HTMLEditorKit();

        String licenseText = null;
        InputStream licenseStream = LicenseAgreementDialog.class.getResourceAsStream("/licenses/license.html");
        if (licenseStream != null) {
            try {
                licenseText = IOUtils.toString(licenseStream, StandardCharsets.UTF_8);
            } catch (IOException ex) {
                if (logger.isErrorEnabled())
                    logger.error("Exception while loading license!", ex);
                IOUtilities.interruptIfNecessary(ex);
            } finally {
                IOUtilities.closeQuietly(licenseStream);
            }
        }
        if (licenseText == null) {
            if (logger.isErrorEnabled())
                logger.error("Couldn't find license text! Exiting!");
            System.exit(-1);
        }

        licenseTextPane.setEditorKit(htmlEditorKit);
        licenseTextPane.setEditable(false);
        licenseTextPane.setText(licenseText);
        JScrollPane licenseScrollPane = new JScrollPane(licenseTextPane);
        licenseScrollPane.setPreferredSize(new Dimension(640, 480));

        content.add(licenseScrollPane, BorderLayout.CENTER);
        content.add(buttonPanel, BorderLayout.SOUTH);

        AcceptAction acceptAction = new AcceptAction();
        DeclineAction declineAction = new DeclineAction();

        JButton acceptButton = new JButton(acceptAction);
        JButton declineButton = new JButton(declineAction);

        buttonPanel.add(acceptButton);
        buttonPanel.add(declineButton);
        setContentPane(content);
        licenseTextPane.setCaretPosition(0);
        declineButton.requestFocusInWindow();
    }

    public boolean isLicenseAgreed() {
        return licenseAgreed;
    }

    public void setLicenseAgreed(boolean licenseAgreed) {
        this.licenseAgreed = licenseAgreed;
        if (isVisible()) {
            setVisible(false);
        }
    }

    private void accept() {
        setLicenseAgreed(true);
    }

    private void decline() {
        setLicenseAgreed(false);
    }

    private class AcceptAction extends AbstractAction {
        private static final long serialVersionUID = 5602271076398281248L;

        AcceptAction() {
            super("Accept");
        }

        public void actionPerformed(ActionEvent e) {
            accept();
        }
    }

    private class DeclineAction extends AbstractAction {
        private static final long serialVersionUID = 5007161609485321187L;

        DeclineAction() {
            super("Decline");
        }

        public void actionPerformed(ActionEvent e) {
            decline();
        }
    }
}