BareBonesBrowserLaunch.java

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 * Licensed under the Apache License, Version 2.0 (the "License");
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package org.pentaho.di.ui.trans.steps.googleanalytics;

import java.util.Arrays;

/**
 * <b>Bare Bones Browser Launch for Java</b><br>
 * Utility class to open a web page from a Swing application in the user's default browser.<br>
 * Supports: Mac OS X, GNU/Linux, Unix, Windows XP/Vista/7<br>
 * Example Usage:<code><br>    
 *    String url = "http://www.google.com/";<br>    
 *    BareBonesBrowserLaunch.openURL(url);<br></code> Latest Version: <a
 * href="http://www.centerkey.com/java/browser/">www.centerkey.com/java/browser</a><br>
 * Author: Dem Pilafian<br>
 * Public Domain Software -- Free to Use as You Like
 *
 * @version 3.1, June 6, 2010
 */
public class BareBonesBrowserLaunch {

  static final String[] browsers =
  {
    "google-chrome", "firefox", "opera", "epiphany", "konqueror", "conkeror", "midori", "kazehakase",
    "mozilla" };
  static final String errMsg = "Error attempting to launch web browser";

  /**
   * Opens the specified web page in the user's default browser
   *
   * @param url
   *          A web address (URL) of a web page (ex: "http://www.google.com/")
   */
  public static void openURL( String url ) {
    try { // attempt to use Desktop library from JDK 1.6+
      Class<?> d = Class.forName( "java.awt.Desktop" );
      d.getDeclaredMethod( "browse", new Class<?>[] { java.net.URI.class } ).invoke(
        d.getDeclaredMethod( "getDesktop" ).invoke( null ), new Object[] { java.net.URI.create( url ) } );
      // above code mimicks: java.awt.Desktop.getDesktop().browse()
    } catch ( Exception ignore ) { // library not available or failed
      String osName = System.getProperty( "os.name" );
      try {
        if ( osName.startsWith( "Mac OS" ) ) {
          Class
            .forName( "com.apple.eio.FileManager" ).getDeclaredMethod( "openURL", new Class<?>[] { String.class } )
            .invoke( null, new Object[] { url } );
        } else if ( osName.startsWith( "Windows" ) ) {
          Runtime.getRuntime().exec( "rundll32 url.dll,FileProtocolHandler " + url );
        } else { // assume Unix or Linux
          String browser = null;
          for ( String b : browsers ) {
            if ( browser == null
              && Runtime.getRuntime().exec( new String[] { "which", b } ).getInputStream().read() != -1 ) {
              Runtime.getRuntime().exec( new String[] { browser = b, url } );
            }
          }
          if ( browser == null ) {
            throw new Exception( Arrays.toString( browsers ) );
          }
        }
      } catch ( Exception e ) {
        // silently fail
        // JOptionPane.showMessageDialog(null, errMsg + "\n" + e.toString());
        e.printStackTrace();
      }
    }
  }

}