source: josm/src/org/openstreetmap/josm/tools/OpenBrowser.java@ 299

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.tools;

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

import javax.swing.JApplet;

import org.openstreetmap.josm.Main;

/**
 * Helper to open platform web browser on different platforms
 * @author Imi
 */
public class OpenBrowser {

        /**
         * @return <code>null</code> for success or a string in case of an error.
         */
        public static String displayUrl(String url) {
                if (Main.applet) {
                        try {
                                JApplet applet = (JApplet) Main.parent;
                                applet.getAppletContext().showDocument(new URL(url));
                                return null;
                        } catch (MalformedURLException mue) {
                                return mue.getMessage();
                        }
                }

                String os = System.getProperty("os.name");
                if (os == null)
                        return "unknown operating system";
                try {
                        if (os != null && os.startsWith("Windows"))
                                windows(url);
                        else if (os.equals("Linux") || os.equals("Solaris") || os.equals("SunOS") || os.equals("AIX") || os.equals("FreeBSD"))
                                linux(url);
                        else if (os.equals("Mac OS") || os.equals("Mac OS X"))
                                mac(url);
                        else
                                return "unknown operating system";
                } catch (IOException e) {
                        return e.getMessage();
                }
                return null;
        }

        private static void windows(String url) throws IOException {
                Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);
        }

        private static void linux(String url) {
                String[] programs = {"gnome-open", "kfmclient openURL", "firefox"};
                for (String program : programs) {
                        try {
                                Runtime.getRuntime().exec(program+" "+url);
                                return;
                        } catch (IOException e) {
            }
                }
        }

        private static void mac(String url) throws IOException {
                Runtime.getRuntime().exec("open " + url);
        }
}