001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.bugreport;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.awt.GridBagLayout;
007import java.io.IOException;
008import java.nio.charset.StandardCharsets;
009
010import javax.swing.JButton;
011import javax.swing.JPanel;
012import javax.swing.SwingUtilities;
013
014import org.openstreetmap.josm.Main;
015import org.openstreetmap.josm.data.Version;
016import org.openstreetmap.josm.gui.widgets.JMultilineLabel;
017import org.openstreetmap.josm.gui.widgets.UrlLabel;
018import org.openstreetmap.josm.io.CachedFile;
019import org.openstreetmap.josm.tools.GBC;
020import org.openstreetmap.josm.tools.ImageProvider;
021import org.openstreetmap.josm.tools.Logging;
022
023/**
024 * This is a panel that displays the current JOSM version and the ability to update JOSM.
025 * @author Michael Zangl
026 * @since 10649
027 */
028public class JosmUpdatePanel extends JPanel {
029    private final JMultilineLabel testedVersionField;
030    private final int josmVersion;
031
032    /**
033     * Create a new {@link JosmUpdatePanel}
034     */
035    public JosmUpdatePanel() {
036        super(new GridBagLayout());
037        josmVersion = Version.getInstance().getVersion();
038
039        add(new JMultilineLabel(tr("Your current version of JOSM is {0}", Integer.toString(josmVersion))), GBC.eol().fill(GBC.HORIZONTAL));
040        testedVersionField = new JMultilineLabel(tr("JOSM is searching for updates..."));
041        add(testedVersionField, GBC.eol().fill(GBC.HORIZONTAL));
042
043        checkCurrentVersion();
044    }
045
046    private void checkCurrentVersion() {
047        new Thread(this::readCurrentVersion, "JOSM version checker").start();
048    }
049
050    private void readCurrentVersion() {
051        int testedVersion = getTestedVersion();
052
053        if (testedVersion < 0) {
054            SwingUtilities.invokeLater(this::displayError);
055        } else if (josmVersion < testedVersion) {
056            SwingUtilities.invokeLater(() -> displayOutOfDate(testedVersion));
057        } else {
058            SwingUtilities.invokeLater(this::displayUpToDate);
059        }
060    }
061
062    private static int getTestedVersion() {
063        try (CachedFile testedVersion = new CachedFile(Main.getJOSMWebsite() + "/tested")) {
064            testedVersion.setMaxAge(60L * 15); // 15 Minutes
065            String testedString = new String(testedVersion.getByteContent(), StandardCharsets.ISO_8859_1);
066            return Integer.parseInt(testedString.trim());
067        } catch (NumberFormatException | IOException e) {
068            Logging.log(Logging.LEVEL_WARN, "Unable to detect current tested version of JOSM:", e);
069            return -1;
070        }
071    }
072
073    /**
074     * Display that there was an error while checking the current version.
075     */
076    private void displayError() {
077        testedVersionField.setText(tr("An error occured while checking if your JOSM instance is up to date."));
078        showUpdateButton();
079    }
080
081    private void displayUpToDate() {
082        testedVersionField.setText(tr("JOSM is up to date."));
083    }
084
085    private void displayOutOfDate(int testedVersion) {
086        testedVersionField
087                .setText(tr("JOSM is out of date. The current version is {0}. Try updating JOSM.", Integer.toString(testedVersion)));
088        showUpdateButton();
089    }
090
091    private void showUpdateButton() {
092        add(new JMultilineLabel(tr("Before you file a bug report make sure you have updated to the latest version of JOSM here:")), GBC.eol());
093        add(new UrlLabel(Main.getJOSMWebsite(), 2), GBC.eop().insets(8, 0, 0, 0));
094        JButton updateButton = new JButton(tr("Update JOSM"), ImageProvider.get("download"));
095        updateButton.addActionListener(e -> openJosmUpdateSite());
096        add(updateButton, GBC.eol().anchor(GBC.EAST));
097    }
098
099    private static void openJosmUpdateSite() {
100        try {
101            Main.platform.openUrl(Main.getJOSMWebsite());
102        } catch (IOException ex) {
103            Logging.log(Logging.LEVEL_WARN, "Unable to access JOSM website:", ex);
104        }
105    }
106}