tim/prune/function/CheckVersionScreen.java

   1 package tim.prune.function;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.net.URL;
   6 import java.text.DateFormat;
   7 import java.text.ParseException;
   8 import java.text.SimpleDateFormat;
   9 import java.util.Properties;
  10 import javax.swing.JOptionPane;
  11
  12 import tim.prune.App;
  13 import tim.prune.GenericFunction;
  14 import tim.prune.GpsPrune;
  15 import tim.prune.I18nManager;
  16 import tim.prune.function.browser.BrowserLauncher;
  17
  18 /**
  19  * Class to check the version of GpsPrune
  20  * and show an appropriate dialog
  21  */
  22 public class CheckVersionScreen extends GenericFunction
  23 {
  24         /**
  25          * Constructor
  26          * @param inApp app object
  27          */
  28         public CheckVersionScreen(App inApp)
  29         {
  30                 super(inApp);
  31         }
  32
  33         /**
  34          * Get the name key
  35          */
  36         public String getNameKey() {
  37                 return "function.checkversion";
  38         }
  39
  40         /**
  41          * Show the check version dialog
  42          */
  43         public void begin()
  44         {
  45                 final String filePathStart = "https://activityworkshop.net/software/gpsprune/gpsprune_versioncheck_";
  46                 final String filePathEnd = ".txt";
  47                 String latestVer = null;
  48                 String nextVersion = null;
  49                 String releaseDate = null;
  50                 Properties props = new Properties();
  51                 try
  52                 {
  53                         // Load properties from the url on the server
  54                         InputStream inStream = new URL(filePathStart + GpsPrune.VERSION_NUMBER + filePathEnd).openStream();
  55                         props.load(inStream);
  56
  57                         // Extract the three fields we want, ignore others
  58                         latestVer = props.getProperty("prune.latestversion");
  59                         nextVersion = props.getProperty("prune.nextversion");
  60                         releaseDate = props.getProperty("prune.releasedate");
  61                 }
  62                 catch (IOException ioe) {
  63                         System.err.println(ioe.getClass().getName() + " - " + ioe.getMessage());
  64                 }
  65
  66                 if (latestVer == null) {
  67                         // Couldn't get version number, show error message
  68                         JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("dialog.checkversion.error"),
  69                                 I18nManager.getText(getNameKey()), JOptionPane.ERROR_MESSAGE);
  70                 }
  71                 else if (latestVer.equals(GpsPrune.VERSION_NUMBER))
  72                 {
  73                         // Version on the server is the same as this one
  74                         String displayMessage = I18nManager.getText("dialog.checkversion.uptodate");
  75                         if (nextVersion != null && !nextVersion.equals(""))
  76                         {
  77                                 displayMessage += "\n\n" + nextVersion;
  78                         }
  79                         // Show information message that the current version is already running
  80                         JOptionPane.showMessageDialog(_parentFrame, displayMessage,
  81                                 I18nManager.getText(getNameKey()), JOptionPane.INFORMATION_MESSAGE);
  82                 }
  83                 else
  84                 {
  85                         // A new version is available!
  86                         String displayMessage = I18nManager.getText("dialog.checkversion.newversion1") + " " + latestVer
  87                                 + " " + I18nManager.getText("dialog.checkversion.newversion2");
  88                         try
  89                         {
  90                                 if (releaseDate != null && !releaseDate.equals("")) {
  91                                         displayMessage += "\n\n" + I18nManager.getText("dialog.checkversion.releasedate1") + " "
  92                                                 + DateFormat.getDateInstance(DateFormat.LONG).format(new SimpleDateFormat("y-M-d").parse(releaseDate))
  93                                                 + " " + I18nManager.getText("dialog.checkversion.releasedate2");
  94                                 }
  95                         }
  96                         catch (ParseException pe) {
  97                                 System.err.println("Oops, couldn't parse date: '" + releaseDate + "'");
  98                         }
  99                         displayMessage += "\n\n" + I18nManager.getText("dialog.checkversion.download");
 100
 101                         // Show information message to download the new version
 102                         Object[] buttonTexts = {I18nManager.getText("button.showwebpage"), I18nManager.getText("button.cancel")};
 103                         if (JOptionPane.showOptionDialog(_parentFrame, displayMessage,
 104                                         I18nManager.getText(getNameKey()), JOptionPane.YES_NO_OPTION,
 105                                         JOptionPane.INFORMATION_MESSAGE, null, buttonTexts, buttonTexts[1])
 106                                 == JOptionPane.YES_OPTION)
 107                         {
 108                                 // User selected to launch home page
 109                                 BrowserLauncher.launchBrowser("https://activityworkshop.net/software/gpsprune/download.html");
 110                         }
 111                 }
 112         }
 113 }