Treat an empty index file as no index file.

[jSite.git] / src / de / todesbaum / jsite / main / Main.java

diff --git a/src/de/todesbaum/jsite/main/Main.java b/src/de/todesbaum/jsite/main/Main.java
index 8c9a15d..75c1453 100644 (file)
--- a/src/de/todesbaum/jsite/main/Main.java
+++ b/src/de/todesbaum/jsite/main/Main.java
@@ -24,6 +24,7 @@ import java.awt.event.ActionListener;
 import java.io.File;
 import java.io.IOException;
 import java.text.MessageFormat;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
@@ -52,6 +53,8 @@ import de.todesbaum.jsite.gui.NodeManagerPage;
 import de.todesbaum.jsite.gui.ProjectFilesPage;
 import de.todesbaum.jsite.gui.ProjectInsertPage;
 import de.todesbaum.jsite.gui.ProjectPage;
+import de.todesbaum.jsite.gui.UpdateChecker;
+import de.todesbaum.jsite.gui.UpdateListener;
 import de.todesbaum.jsite.i18n.I18n;
 import de.todesbaum.jsite.i18n.I18nContainer;
 import de.todesbaum.util.image.IconLoader;
@@ -64,17 +67,23 @@ import de.todesbaum.util.swing.WizardListener;
  *
  * @author David ‘Bombe’ Roden <bombe@freenetproject.org>
  */
-public class Main implements ActionListener, ListSelectionListener, WizardListener, NodeManagerListener {
+public class Main implements ActionListener, ListSelectionListener, WizardListener, NodeManagerListener, UpdateListener {
 
        /** Whether the debug mode is activated. */
        private static boolean debug = false;
 
+       /** The version. */
+       private static final Version VERSION = new Version(0, 7);
+
        /** The configuration. */
        private Configuration configuration;
 
        /** The freenet interface. */
        private Freenet7Interface freenetInterface = new Freenet7Interface();
 
+       /** The update checker. */
+       private final UpdateChecker updateChecker;
+
        /** The jSite icon. */
        private Icon jSiteIcon;
 
@@ -108,6 +117,9 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
        /** The “manage nodes” action. */
        private Action manageNodeAction;
 
+       /** The “check for updates” action. */
+       private Action checkForUpdatesAction;
+
        /** The “about jSite” action. */
        private Action aboutAction;
 
@@ -147,7 +159,7 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                if (!configuration.createLockFile()) {
                        int option = JOptionPane.showOptionDialog(null, I18n.getMessage("jsite.main.already-running"), "", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[] { I18n.getMessage("jsite.main.already-running.override"), I18n.getMessage("jsite.wizard.quit") }, I18n.getMessage("jsite.wizard.quit"));
                        if (option != 0) {
-                               return;
+                               throw new IllegalStateException("Lockfile override not active, refusing start.");
                        }
                        configuration.removeLockfileOnExit();
                }
@@ -161,6 +173,10 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                jSiteIcon = IconLoader.loadIcon("/jsite-icon.png");
                wizard.setIcon(jSiteIcon);
 
+               updateChecker = new UpdateChecker(freenetInterface);
+               updateChecker.addUpdateListener(this);
+               updateChecker.start();
+
                initPages();
                showPage(PageType.PAGE_PROJECTS);
        }
@@ -187,11 +203,21 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                                wizard.setNextName(I18n.getMessage("jsite.wizard.next"));
                        }
                };
+               checkForUpdatesAction = new AbstractAction(I18n.getMessage("jsite.menu.help.check-for-updates")) {
+
+                       /**
+                        * {@inheritDoc}
+                        */
+                       @SuppressWarnings("synthetic-access")
+                       public void actionPerformed(ActionEvent actionEvent) {
+                               showLatestUpdate();
+                       }
+               };
                aboutAction = new AbstractAction(I18n.getMessage("jsite.menu.help.about")) {
 
                        @SuppressWarnings("synthetic-access")
                        public void actionPerformed(ActionEvent e) {
-                               JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.about.message"), Version.getVersion()), null, JOptionPane.INFORMATION_MESSAGE, jSiteIcon);
+                               JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.about.message"), getVersion().toString()), null, JOptionPane.INFORMATION_MESSAGE, jSiteIcon);
                        }
                };
 
@@ -237,6 +263,7 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
 
                final JMenu helpMenu = new JMenu(I18n.getMessage("jsite.menu.help"));
                menuBar.add(helpMenu);
+               helpMenu.add(checkForUpdatesAction);
                helpMenu.add(aboutAction);
 
                I18nContainer.getInstance().registerRunnable(new Runnable() {
@@ -342,6 +369,15 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                return SUPPORTED_LOCALES[0];
        }
 
+       /**
+        * Returns the version.
+        *
+        * @return The version
+        */
+       public static final Version getVersion() {
+               return VERSION;
+       }
+
        //
        // ACTIONS
        //
@@ -369,6 +405,22 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                configuration.setLocale(supportedLocale);
        }
 
+       /**
+        * Shows a dialog box that shows the last version that was found by the
+        * {@link UpdateChecker}.
+        */
+       private void showLatestUpdate() {
+               Version latestVersion = updateChecker.getLatestVersion();
+               int versionDifference = latestVersion.compareTo(VERSION);
+               if (versionDifference > 0) {
+                       JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.update-checker.latest-version.newer.message"), VERSION, latestVersion), I18n.getMessage("jsite.update-checker.latest-version.title"), JOptionPane.INFORMATION_MESSAGE);
+               } else if (versionDifference < 0) {
+                       JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.update-checker.latest-version.older.message"), VERSION, latestVersion), I18n.getMessage("jsite.update-checker.latest-version.title"), JOptionPane.INFORMATION_MESSAGE);
+               } else {
+                       JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.update-checker.latest-version.okay.message"), VERSION, latestVersion), I18n.getMessage("jsite.update-checker.latest-version.title"), JOptionPane.INFORMATION_MESSAGE);
+               }
+       }
+
        //
        // INTERFACE ListSelectionListener
        //
@@ -414,7 +466,7 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
                                JOptionPane.showMessageDialog(wizard, I18n.getMessage("jsite.project-files.no-node-selected"), null, JOptionPane.ERROR_MESSAGE);
                                return;
                        }
-                       if (project.getIndexFile() == null) {
+                       if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
                                if (JOptionPane.showConfirmDialog(wizard, I18n.getMessage("jsite.project-files.empty-index"), null, JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE) != JOptionPane.OK_OPTION) {
                                        return;
                                }
@@ -536,6 +588,19 @@ public class Main implements ActionListener, ListSelectionListener, WizardListen
        }
 
        //
+       // INTERFACE UpdateListener
+       //
+
+       /**
+        * {@inheritDoc}
+        */
+       public void foundUpdateData(Version foundVersion, long versionTimestamp) {
+               if (foundVersion.compareTo(VERSION) > 0) {
+                       JOptionPane.showMessageDialog(wizard, MessageFormat.format(I18n.getMessage("jsite.update-checker.found-version.message"), foundVersion.toString(), new Date(versionTimestamp)), I18n.getMessage("jsite.update-checker.found-version.title"), JOptionPane.INFORMATION_MESSAGE);
+               }
+       }
+
+       //
        // MAIN METHOD
        //