Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / function / CheckVersionScreen.java

diff --git a/src/tim/prune/function/CheckVersionScreen.java b/src/tim/prune/function/CheckVersionScreen.java
new file mode 100644 (file)
index 0000000..701937d
--- /dev/null
+++ b/src/tim/prune/function/CheckVersionScreen.java
@@ -0,0 +1,113 @@
+package tim.prune.function;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Properties;
+import javax.swing.JOptionPane;
+
+import tim.prune.App;
+import tim.prune.GenericFunction;
+import tim.prune.GpsPrune;
+import tim.prune.I18nManager;
+import tim.prune.function.browser.BrowserLauncher;
+
+/**
+ * Class to check the version of GpsPrune
+ * and show an appropriate dialog
+ */
+public class CheckVersionScreen extends GenericFunction
+{
+       /**
+        * Constructor
+        * @param inApp app object
+        */
+       public CheckVersionScreen(App inApp)
+       {
+               super(inApp);
+       }
+
+       /**
+        * Get the name key
+        */
+       public String getNameKey() {
+               return "function.checkversion";
+       }
+
+       /**
+        * Show the check version dialog
+        */
+       public void begin()
+       {
+               final String filePathStart = "https://activityworkshop.net/software/gpsprune/gpsprune_versioncheck_";
+               final String filePathEnd = ".txt";
+               String latestVer = null;
+               String nextVersion = null;
+               String releaseDate = null;
+               Properties props = new Properties();
+               try
+               {
+                       // Load properties from the url on the server
+                       InputStream inStream = new URL(filePathStart + GpsPrune.VERSION_NUMBER + filePathEnd).openStream();
+                       props.load(inStream);
+
+                       // Extract the three fields we want, ignore others
+                       latestVer = props.getProperty("prune.latestversion");
+                       nextVersion = props.getProperty("prune.nextversion");
+                       releaseDate = props.getProperty("prune.releasedate");
+               }
+               catch (IOException ioe) {
+                       System.err.println(ioe.getClass().getName() + " - " + ioe.getMessage());
+               }
+
+               if (latestVer == null) {
+                       // Couldn't get version number, show error message
+                       JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("dialog.checkversion.error"),
+                               I18nManager.getText(getNameKey()), JOptionPane.ERROR_MESSAGE);
+               }
+               else if (latestVer.equals(GpsPrune.VERSION_NUMBER))
+               {
+                       // Version on the server is the same as this one
+                       String displayMessage = I18nManager.getText("dialog.checkversion.uptodate");
+                       if (nextVersion != null && !nextVersion.equals(""))
+                       {
+                               displayMessage += "\n\n" + nextVersion;
+                       }
+                       // Show information message that the current version is already running
+                       JOptionPane.showMessageDialog(_parentFrame, displayMessage,
+                               I18nManager.getText(getNameKey()), JOptionPane.INFORMATION_MESSAGE);
+               }
+               else
+               {
+                       // A new version is available!
+                       String displayMessage = I18nManager.getText("dialog.checkversion.newversion1") + " " + latestVer
+                               + " " + I18nManager.getText("dialog.checkversion.newversion2");
+                       try
+                       {
+                               if (releaseDate != null && !releaseDate.equals("")) {
+                                       displayMessage += "\n\n" + I18nManager.getText("dialog.checkversion.releasedate1") + " "
+                                               + DateFormat.getDateInstance(DateFormat.LONG).format(new SimpleDateFormat("y-M-d").parse(releaseDate))
+                                               + " " + I18nManager.getText("dialog.checkversion.releasedate2");
+                               }
+                       }
+                       catch (ParseException pe) {
+                               System.err.println("Oops, couldn't parse date: '" + releaseDate + "'");
+                       }
+                       displayMessage += "\n\n" + I18nManager.getText("dialog.checkversion.download");
+
+                       // Show information message to download the new version
+                       Object[] buttonTexts = {I18nManager.getText("button.showwebpage"), I18nManager.getText("button.cancel")};
+                       if (JOptionPane.showOptionDialog(_parentFrame, displayMessage,
+                                       I18nManager.getText(getNameKey()), JOptionPane.YES_NO_OPTION,
+                                       JOptionPane.INFORMATION_MESSAGE, null, buttonTexts, buttonTexts[1])
+                               == JOptionPane.YES_OPTION)
+                       {
+                               // User selected to launch home page
+                               BrowserLauncher.launchBrowser("https://activityworkshop.net/software/gpsprune/download.html");
+                       }
+               }
+       }
+}