001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005import static org.openstreetmap.josm.tools.I18n.trn;
006
007import java.awt.Dimension;
008import java.io.File;
009import java.io.IOException;
010import java.io.InputStream;
011import java.net.Authenticator;
012import java.net.Inet6Address;
013import java.net.InetAddress;
014import java.net.InetSocketAddress;
015import java.net.ProxySelector;
016import java.net.Socket;
017import java.net.URL;
018import java.security.AllPermission;
019import java.security.CodeSource;
020import java.security.GeneralSecurityException;
021import java.security.KeyStoreException;
022import java.security.NoSuchAlgorithmException;
023import java.security.PermissionCollection;
024import java.security.Permissions;
025import java.security.Policy;
026import java.security.cert.CertificateException;
027import java.util.Arrays;
028import java.util.Collection;
029import java.util.List;
030import java.util.Locale;
031import java.util.Optional;
032import java.util.Set;
033import java.util.TreeSet;
034import java.util.logging.Level;
035
036import javax.swing.JOptionPane;
037import javax.swing.RepaintManager;
038import javax.swing.SwingUtilities;
039
040import org.jdesktop.swinghelper.debug.CheckThreadViolationRepaintManager;
041import org.openstreetmap.josm.Main;
042import org.openstreetmap.josm.actions.PreferencesAction;
043import org.openstreetmap.josm.actions.RestartAction;
044import org.openstreetmap.josm.data.AutosaveTask;
045import org.openstreetmap.josm.data.CustomConfigurator;
046import org.openstreetmap.josm.data.Version;
047import org.openstreetmap.josm.gui.ProgramArguments.Option;
048import org.openstreetmap.josm.gui.SplashScreen.SplashProgressMonitor;
049import org.openstreetmap.josm.gui.download.DownloadDialog;
050import org.openstreetmap.josm.gui.preferences.server.OAuthAccessTokenHolder;
051import org.openstreetmap.josm.gui.preferences.server.ProxyPreference;
052import org.openstreetmap.josm.gui.util.GuiHelper;
053import org.openstreetmap.josm.io.CertificateAmendment;
054import org.openstreetmap.josm.io.DefaultProxySelector;
055import org.openstreetmap.josm.io.MessageNotifier;
056import org.openstreetmap.josm.io.OnlineResource;
057import org.openstreetmap.josm.io.auth.CredentialsManager;
058import org.openstreetmap.josm.io.auth.DefaultAuthenticator;
059import org.openstreetmap.josm.io.protocols.data.Handler;
060import org.openstreetmap.josm.io.remotecontrol.RemoteControl;
061import org.openstreetmap.josm.plugins.PluginHandler;
062import org.openstreetmap.josm.plugins.PluginInformation;
063import org.openstreetmap.josm.tools.FontsManager;
064import org.openstreetmap.josm.tools.HttpClient;
065import org.openstreetmap.josm.tools.I18n;
066import org.openstreetmap.josm.tools.Logging;
067import org.openstreetmap.josm.tools.OsmUrlToBounds;
068import org.openstreetmap.josm.tools.PlatformHookWindows;
069import org.openstreetmap.josm.tools.Utils;
070import org.openstreetmap.josm.tools.WindowGeometry;
071import org.openstreetmap.josm.tools.bugreport.BugReport;
072import org.openstreetmap.josm.tools.bugreport.BugReportExceptionHandler;
073
074/**
075 * Main window class application.
076 *
077 * @author imi
078 */
079public class MainApplication extends Main {
080
081    private MainFrame mainFrame;
082
083    /**
084     * Constructs a new {@code MainApplication} without a window.
085     */
086    public MainApplication() {
087        // Allow subclassing (see JOSM.java)
088        this(null);
089    }
090
091    /**
092     * Constructs a main frame, ready sized and operating. Does not display the frame.
093     * @param mainFrame The main JFrame of the application
094     * @since 10340
095     */
096    public MainApplication(MainFrame mainFrame) {
097        this.mainFrame = mainFrame;
098    }
099
100    @Override
101    protected void initializeMainWindow() {
102        mainPanel.reAddListeners();
103        if (mainFrame != null) {
104            mainFrame.initialize();
105
106            menu = mainFrame.getMenu();
107        } else {
108            // required for running some tests.
109            menu = new MainMenu();
110        }
111    }
112
113    @Override
114    protected void shutdown() {
115        if (mainFrame != null) {
116            mainFrame.storeState();
117        }
118        super.shutdown();
119    }
120
121    /**
122     * Displays help on the console
123     * @since 2748
124     */
125    public static void showHelp() {
126        // TODO: put in a platformHook for system that have no console by default
127        System.out.println(getHelp());
128    }
129
130    static String getHelp() {
131        return tr("Java OpenStreetMap Editor")+" ["
132                +Version.getInstance().getAgentString()+"]\n\n"+
133                tr("usage")+":\n"+
134                "\tjava -jar josm.jar <options>...\n\n"+
135                tr("options")+":\n"+
136                "\t--help|-h                                 "+tr("Show this help")+'\n'+
137                "\t--geometry=widthxheight(+|-)x(+|-)y       "+tr("Standard unix geometry argument")+'\n'+
138                "\t[--download=]minlat,minlon,maxlat,maxlon  "+tr("Download the bounding box")+'\n'+
139                "\t[--download=]<URL>                        "+tr("Download the location at the URL (with lat=x&lon=y&zoom=z)")+'\n'+
140                "\t[--download=]<filename>                   "+tr("Open a file (any file type that can be opened with File/Open)")+'\n'+
141                "\t--downloadgps=minlat,minlon,maxlat,maxlon "+tr("Download the bounding box as raw GPS")+'\n'+
142                "\t--downloadgps=<URL>                       "+tr("Download the location at the URL (with lat=x&lon=y&zoom=z) as raw GPS")+'\n'+
143                "\t--selection=<searchstring>                "+tr("Select with the given search")+'\n'+
144                "\t--[no-]maximize                           "+tr("Launch in maximized mode")+'\n'+
145                "\t--reset-preferences                       "+tr("Reset the preferences to default")+"\n\n"+
146                "\t--load-preferences=<url-to-xml>           "+tr("Changes preferences according to the XML file")+"\n\n"+
147                "\t--set=<key>=<value>                       "+tr("Set preference key to value")+"\n\n"+
148                "\t--language=<language>                     "+tr("Set the language")+"\n\n"+
149                "\t--version                                 "+tr("Displays the JOSM version and exits")+"\n\n"+
150                "\t--debug                                   "+tr("Print debugging messages to console")+"\n\n"+
151                "\t--skip-plugins                            "+tr("Skip loading plugins")+"\n\n"+
152                "\t--offline=<osm_api|josm_website|all>      "+tr("Disable access to the given resource(s), separated by comma")+"\n\n"+
153                tr("options provided as Java system properties")+":\n"+
154                // CHECKSTYLE.OFF: SingleSpaceSeparator
155                "\t-Djosm.pref="    +tr("/PATH/TO/JOSM/PREF    ")+tr("Set the preferences directory")+"\n\n"+
156                "\t-Djosm.userdata="+tr("/PATH/TO/JOSM/USERDATA")+tr("Set the user data directory")+"\n\n"+
157                "\t-Djosm.cache="   +tr("/PATH/TO/JOSM/CACHE   ")+tr("Set the cache directory")+"\n\n"+
158                "\t-Djosm.home="    +tr("/PATH/TO/JOSM/HOMEDIR ")+
159                // CHECKSTYLE.ON: SingleSpaceSeparator
160                tr("Relocate all 3 directories to homedir. Cache directory will be in homedir/cache")+"\n\n"+
161                tr("-Djosm.home has lower precedence, i.e. the specific setting overrides the general one")+"\n\n"+
162                tr("note: For some tasks, JOSM needs a lot of memory. It can be necessary to add the following\n" +
163                        "      Java option to specify the maximum size of allocated memory in megabytes")+":\n"+
164                        "\t-Xmx...m\n\n"+
165                tr("examples")+":\n"+
166                "\tjava -jar josm.jar track1.gpx track2.gpx london.osm\n"+
167                "\tjava -jar josm.jar "+OsmUrlToBounds.getURL(43.2, 11.1, 13)+'\n'+
168                "\tjava -jar josm.jar london.osm --selection=http://www.ostertag.name/osm/OSM_errors_node-duplicate.xml\n"+
169                "\tjava -jar josm.jar 43.2,11.1,43.4,11.4\n"+
170                "\tjava -Djosm.pref=$XDG_CONFIG_HOME -Djosm.userdata=$XDG_DATA_HOME -Djosm.cache=$XDG_CACHE_HOME -jar josm.jar\n"+
171                "\tjava -Djosm.home=/home/user/.josm_dev -jar josm.jar\n"+
172                "\tjava -Xmx1024m -jar josm.jar\n\n"+
173                tr("Parameters --download, --downloadgps, and --selection are processed in this order.")+'\n'+
174                tr("Make sure you load some data if you use --selection.")+'\n';
175    }
176
177    /**
178     * Main application Startup
179     * @param argArray Command-line arguments
180     */
181    public static void main(final String[] argArray) {
182        I18n.init();
183
184        // construct argument table
185        ProgramArguments args = null;
186        try {
187            args = new ProgramArguments(argArray);
188        } catch (IllegalArgumentException e) {
189            System.err.println(e.getMessage());
190            System.exit(1);
191            return;
192        }
193
194        Level logLevel = args.getLogLevel();
195        Logging.setLogLevel(logLevel);
196        if (!args.showVersion() && !args.showHelp()) {
197            Main.info(tr("Log level is at {0} ({1}, {2})", logLevel.getLocalizedName(), logLevel.getName(), logLevel.intValue()));
198        }
199
200        Optional<String> language = args.getSingle(Option.LANGUAGE);
201        I18n.set(language.orElse(null));
202
203        Policy.setPolicy(new Policy() {
204            // Permissions for plug-ins loaded when josm is started via webstart
205            private PermissionCollection pc;
206
207            {
208                pc = new Permissions();
209                pc.add(new AllPermission());
210            }
211
212            @Override
213            public PermissionCollection getPermissions(CodeSource codesource) {
214                return pc;
215            }
216        });
217
218        Thread.setDefaultUncaughtExceptionHandler(new BugReportExceptionHandler());
219
220        // initialize the platform hook, and
221        Main.determinePlatformHook();
222        // call the really early hook before we do anything else
223        Main.platform.preStartupHook();
224
225        if (args.showVersion()) {
226            System.out.println(Version.getInstance().getAgentString());
227            return;
228        } else if (args.showHelp()) {
229            showHelp();
230            return;
231        }
232
233        Main.COMMAND_LINE_ARGS.addAll(Arrays.asList(argArray));
234
235        boolean skipLoadingPlugins = args.hasOption(Option.SKIP_PLUGINS);
236        if (skipLoadingPlugins) {
237            Main.info(tr("Plugin loading skipped"));
238        }
239
240        if (Logging.isLoggingEnabled(Logging.LEVEL_TRACE)) {
241            // Enable debug in OAuth signpost via system preference, but only at trace level
242            Utils.updateSystemProperty("debug", "true");
243            Main.info(tr("Enabled detailed debug level (trace)"));
244        }
245
246        Main.pref.init(args.hasOption(Option.RESET_PREFERENCES));
247
248        args.getPreferencesToSet().forEach(Main.pref::put);
249
250        if (!language.isPresent()) {
251            I18n.set(Main.pref.get("language", null));
252        }
253        Main.pref.updateSystemProperties();
254
255        checkIPv6();
256
257        processOffline(args);
258
259        Main.platform.afterPrefStartupHook();
260
261        FontsManager.initialize();
262
263        I18n.setupLanguageFonts();
264
265        Handler.install();
266
267        WindowGeometry geometry = WindowGeometry.mainWindow("gui.geometry",
268                args.getSingle(Option.GEOMETRY).orElse(null),
269                !args.hasOption(Option.NO_MAXIMIZE) && Main.pref.getBoolean("gui.maximized", false));
270        final MainFrame mainFrame = new MainFrame(contentPanePrivate, mainPanel, geometry);
271        Main.parent = mainFrame;
272
273        if (args.hasOption(Option.LOAD_PREFERENCES)) {
274            CustomConfigurator.XMLCommandProcessor config = new CustomConfigurator.XMLCommandProcessor(Main.pref);
275            for (String i : args.get(Option.LOAD_PREFERENCES)) {
276                info("Reading preferences from " + i);
277                try (InputStream is = HttpClient.create(new URL(i)).connect().getContent()) {
278                    config.openAndReadXML(is);
279                } catch (IOException ex) {
280                    throw BugReport.intercept(ex).put("file", i);
281                }
282            }
283        }
284
285        try {
286            CertificateAmendment.addMissingCertificates();
287        } catch (IOException | GeneralSecurityException ex) {
288            Main.warn(ex);
289            Main.warn(getErrorMessage(Utils.getRootCause(ex)));
290        }
291        Authenticator.setDefault(DefaultAuthenticator.getInstance());
292        DefaultProxySelector proxySelector = new DefaultProxySelector(ProxySelector.getDefault());
293        ProxySelector.setDefault(proxySelector);
294        OAuthAccessTokenHolder.getInstance().init(Main.pref, CredentialsManager.getInstance());
295
296        final SplashScreen splash = GuiHelper.runInEDTAndWaitAndReturn(SplashScreen::new);
297        final SplashScreen.SplashProgressMonitor monitor = splash.getProgressMonitor();
298        monitor.beginTask(tr("Initializing"));
299        GuiHelper.runInEDT(() -> splash.setVisible(Main.pref.getBoolean("draw.splashscreen", true)));
300        Main.setInitStatusListener(new InitStatusListener() {
301
302            @Override
303            public Object updateStatus(String event) {
304                monitor.beginTask(event);
305                return event;
306            }
307
308            @Override
309            public void finish(Object status) {
310                if (status instanceof String) {
311                    monitor.finishTask((String) status);
312                }
313            }
314        });
315
316        Collection<PluginInformation> pluginsToLoad = null;
317
318        if (!skipLoadingPlugins) {
319            pluginsToLoad = updateAndLoadEarlyPlugins(splash, monitor);
320        }
321
322        monitor.indeterminateSubTask(tr("Setting defaults"));
323        preConstructorInit();
324
325        monitor.indeterminateSubTask(tr("Creating main GUI"));
326        final Main main = new MainApplication(mainFrame);
327        main.initialize();
328
329        if (!skipLoadingPlugins) {
330            loadLatePlugins(splash, monitor, pluginsToLoad);
331        }
332
333        // Wait for splash disappearance (fix #9714)
334        GuiHelper.runInEDTAndWait(() -> {
335            splash.setVisible(false);
336            splash.dispose();
337            mainFrame.setVisible(true);
338        });
339
340        Main.MasterWindowListener.setup();
341
342        boolean maximized = Main.pref.getBoolean("gui.maximized", false);
343        if ((!args.hasOption(Option.NO_MAXIMIZE) && maximized) || args.hasOption(Option.MAXIMIZE)) {
344            mainFrame.setMaximized(true);
345        }
346        if (main.menu.fullscreenToggleAction != null) {
347            main.menu.fullscreenToggleAction.initial();
348        }
349
350        SwingUtilities.invokeLater(new GuiFinalizationWorker(args, proxySelector));
351
352        if (Main.isPlatformWindows()) {
353            try {
354                // Check for insecure certificates to remove.
355                // This is Windows-dependant code but it can't go to preStartupHook (need i18n)
356                // neither startupHook (need to be called before remote control)
357                PlatformHookWindows.removeInsecureCertificates();
358            } catch (NoSuchAlgorithmException | CertificateException | KeyStoreException | IOException e) {
359                error(e);
360            }
361        }
362
363        if (RemoteControl.PROP_REMOTECONTROL_ENABLED.get()) {
364            RemoteControl.start();
365        }
366
367        if (MessageNotifier.PROP_NOTIFIER_ENABLED.get()) {
368            MessageNotifier.start();
369        }
370
371        if (Main.pref.getBoolean("debug.edt-checker.enable", Version.getInstance().isLocalBuild())) {
372            // Repaint manager is registered so late for a reason - there is lots of violation during startup process
373            // but they don't seem to break anything and are difficult to fix
374            info("Enabled EDT checker, wrongful access to gui from non EDT thread will be printed to console");
375            RepaintManager.setCurrentManager(new CheckThreadViolationRepaintManager());
376        }
377    }
378
379    static Collection<PluginInformation> updateAndLoadEarlyPlugins(SplashScreen splash, SplashProgressMonitor monitor) {
380        Collection<PluginInformation> pluginsToLoad;
381        pluginsToLoad = PluginHandler.buildListOfPluginsToLoad(splash, monitor.createSubTaskMonitor(1, false));
382        if (!pluginsToLoad.isEmpty() && PluginHandler.checkAndConfirmPluginUpdate(splash)) {
383            monitor.subTask(tr("Updating plugins"));
384            pluginsToLoad = PluginHandler.updatePlugins(splash, null, monitor.createSubTaskMonitor(1, false), false);
385        }
386
387        monitor.indeterminateSubTask(tr("Installing updated plugins"));
388        PluginHandler.installDownloadedPlugins(true);
389
390        monitor.indeterminateSubTask(tr("Loading early plugins"));
391        PluginHandler.loadEarlyPlugins(splash, pluginsToLoad, monitor.createSubTaskMonitor(1, false));
392        return pluginsToLoad;
393    }
394
395    static void loadLatePlugins(SplashScreen splash, SplashProgressMonitor monitor, Collection<PluginInformation> pluginsToLoad) {
396        monitor.indeterminateSubTask(tr("Loading plugins"));
397        PluginHandler.loadLatePlugins(splash, pluginsToLoad, monitor.createSubTaskMonitor(1, false));
398        toolbar.refreshToolbarControl();
399    }
400
401    private static void processOffline(ProgramArguments args) {
402        for (String offlineNames : args.get(Option.OFFLINE)) {
403            for (String s : offlineNames.split(",")) {
404                try {
405                    Main.setOffline(OnlineResource.valueOf(s.toUpperCase(Locale.ENGLISH)));
406                } catch (IllegalArgumentException e) {
407                    Main.error(e, tr("''{0}'' is not a valid value for argument ''{1}''. Possible values are {2}, possibly delimited by commas.",
408                            s.toUpperCase(Locale.ENGLISH), Option.OFFLINE.getName(), Arrays.toString(OnlineResource.values())));
409                    System.exit(1);
410                    return;
411                }
412            }
413        }
414        Set<OnlineResource> offline = Main.getOfflineResources();
415        if (!offline.isEmpty()) {
416            Main.warn(trn("JOSM is running in offline mode. This resource will not be available: {0}",
417                    "JOSM is running in offline mode. These resources will not be available: {0}",
418                    offline.size(), offline.size() == 1 ? offline.iterator().next() : Arrays.toString(offline.toArray())));
419        }
420    }
421
422    /**
423     * Check if IPv6 can be safely enabled and do so. Because this cannot be done after network activation,
424     * disabling or enabling IPV6 may only be done with next start.
425     */
426    private static void checkIPv6() {
427        if ("auto".equals(Main.pref.get("prefer.ipv6", "auto"))) {
428            new Thread((Runnable) () -> { /* this may take some time (DNS, Connect) */
429                boolean hasv6 = false;
430                boolean wasv6 = Main.pref.getBoolean("validated.ipv6", false);
431                try {
432                    /* Use the check result from last run of the software, as after the test, value
433                       changes have no effect anymore */
434                    if (wasv6) {
435                        Utils.updateSystemProperty("java.net.preferIPv6Addresses", "true");
436                    }
437                    for (InetAddress a : InetAddress.getAllByName("josm.openstreetmap.de")) {
438                        if (a instanceof Inet6Address) {
439                            if (a.isReachable(1000)) {
440                                /* be sure it REALLY works */
441                                Socket s = new Socket();
442                                s.connect(new InetSocketAddress(a, 80), 1000);
443                                s.close();
444                                Utils.updateSystemProperty("java.net.preferIPv6Addresses", "true");
445                                if (!wasv6) {
446                                    Main.info(tr("Detected useable IPv6 network, prefering IPv6 over IPv4 after next restart."));
447                                } else {
448                                    Main.info(tr("Detected useable IPv6 network, prefering IPv6 over IPv4."));
449                                }
450                                hasv6 = true;
451                            }
452                            break; /* we're done */
453                        }
454                    }
455                } catch (IOException | SecurityException e) {
456                    if (Main.isDebugEnabled()) {
457                        Main.debug("Exception while checking IPv6 connectivity: "+e);
458                    }
459                    Main.trace(e);
460                }
461                if (wasv6 && !hasv6) {
462                    Main.info(tr("Detected no useable IPv6 network, prefering IPv4 over IPv6 after next restart."));
463                    Main.pref.put("validated.ipv6", hasv6); // be sure it is stored before the restart!
464                    new RestartAction().actionPerformed(null);
465                }
466                Main.pref.put("validated.ipv6", hasv6);
467            }, "IPv6-checker").start();
468        }
469    }
470
471    private static class GuiFinalizationWorker implements Runnable {
472
473        private final ProgramArguments args;
474        private final DefaultProxySelector proxySelector;
475
476        GuiFinalizationWorker(ProgramArguments args, DefaultProxySelector proxySelector) {
477            this.args = args;
478            this.proxySelector = proxySelector;
479        }
480
481        @Override
482        public void run() {
483
484            // Handle proxy/network errors early to inform user he should change settings to be able to use JOSM correctly
485            if (!handleProxyErrors()) {
486                handleNetworkErrors();
487            }
488
489            // Restore autosave layers after crash and start autosave thread
490            handleAutosave();
491
492            // Handle command line instructions
493            postConstructorProcessCmdLine(args);
494
495            // Show download dialog if autostart is enabled
496            DownloadDialog.autostartIfNeeded();
497        }
498
499        private static void handleAutosave() {
500            if (AutosaveTask.PROP_AUTOSAVE_ENABLED.get()) {
501                AutosaveTask autosaveTask = new AutosaveTask();
502                List<File> unsavedLayerFiles = autosaveTask.getUnsavedLayersFiles();
503                if (!unsavedLayerFiles.isEmpty()) {
504                    ExtendedDialog dialog = new ExtendedDialog(
505                            Main.parent,
506                            tr("Unsaved osm data"),
507                            new String[] {tr("Restore"), tr("Cancel"), tr("Discard")}
508                            );
509                    dialog.setContent(
510                            trn("JOSM found {0} unsaved osm data layer. ",
511                                    "JOSM found {0} unsaved osm data layers. ", unsavedLayerFiles.size(), unsavedLayerFiles.size()) +
512                                    tr("It looks like JOSM crashed last time. Would you like to restore the data?"));
513                    dialog.setButtonIcons(new String[] {"ok", "cancel", "dialogs/delete"});
514                    int selection = dialog.showDialog().getValue();
515                    if (selection == 1) {
516                        autosaveTask.recoverUnsavedLayers();
517                    } else if (selection == 3) {
518                        autosaveTask.discardUnsavedLayers();
519                    }
520                }
521                autosaveTask.schedule();
522            }
523        }
524
525        private static boolean handleNetworkOrProxyErrors(boolean hasErrors, String title, String message) {
526            if (hasErrors) {
527                ExtendedDialog ed = new ExtendedDialog(
528                        Main.parent, title,
529                        new String[]{tr("Change proxy settings"), tr("Cancel")});
530                ed.setButtonIcons(new String[]{"dialogs/settings", "cancel"}).setCancelButton(2);
531                ed.setMinimumSize(new Dimension(460, 260));
532                ed.setIcon(JOptionPane.WARNING_MESSAGE);
533                ed.setContent(message);
534
535                if (ed.showDialog().getValue() == 1) {
536                    PreferencesAction.forPreferenceSubTab(null, null, ProxyPreference.class).run();
537                }
538            }
539            return hasErrors;
540        }
541
542        private boolean handleProxyErrors() {
543            return handleNetworkOrProxyErrors(proxySelector.hasErrors(), tr("Proxy errors occurred"),
544                    tr("JOSM tried to access the following resources:<br>" +
545                            "{0}" +
546                            "but <b>failed</b> to do so, because of the following proxy errors:<br>" +
547                            "{1}" +
548                            "Would you like to change your proxy settings now?",
549                            Utils.joinAsHtmlUnorderedList(proxySelector.getErrorResources()),
550                            Utils.joinAsHtmlUnorderedList(proxySelector.getErrorMessages())
551                    ));
552        }
553
554        private static boolean handleNetworkErrors() {
555            boolean condition = !NETWORK_ERRORS.isEmpty();
556            if (condition) {
557                Set<String> errors = new TreeSet<>();
558                for (Throwable t : NETWORK_ERRORS.values()) {
559                    errors.add(t.toString());
560                }
561                return handleNetworkOrProxyErrors(condition, tr("Network errors occurred"),
562                        tr("JOSM tried to access the following resources:<br>" +
563                                "{0}" +
564                                "but <b>failed</b> to do so, because of the following network errors:<br>" +
565                                "{1}" +
566                                "It may be due to a missing proxy configuration.<br>" +
567                                "Would you like to change your proxy settings now?",
568                                Utils.joinAsHtmlUnorderedList(NETWORK_ERRORS.keySet()),
569                                Utils.joinAsHtmlUnorderedList(errors)
570                        ));
571            }
572            return false;
573        }
574    }
575}