"Last Updated" shows if "lastUpdated" field is present

lastUpdate field is a Unix Timestamp in millisecs
TODO: Add lastUpdated everywhere in contributions.txt, .properties file

app/src/processing/app/contrib/AvailableContribution.java

@@ -54,6 +54,13 @@ class AvailableContribution extends Contribution {
       version = PApplet.parseInt(versionStr, 0);
     }
     prettyVersion = params.get("prettyVersion");
+    String lastUpdatedStr = params.get("lastUpdated");
+    if (lastUpdatedStr != null)
+      try {
+        lastUpdated =  Long.parseLong(lastUpdatedStr);
+      } catch (NumberFormatException e) {
+        lastUpdated = 0;
+      }
   }
   
   
@@ -235,8 +242,8 @@ class AvailableContribution extends Contribution {
         version = Integer.parseInt(properties.get("version"));
       } catch (NumberFormatException e) {
         version = getVersion();
-        System.err.println("The version number for the “" + name
-          + "” library is not set properly.");
+        System.err.println("The version number for the “" + name
+          + "” library is not set properly.");
         System.err
           .println("Please contact the library author to fix it according to the guidelines.");
       }
@@ -256,6 +263,7 @@ class AvailableContribution extends Contribution {
         writer.println("paragraph=" + paragraph);
         writer.println("version=" + version);
         writer.println("prettyVersion=" + prettyVersion);
+        writer.println("lastUpdated=" + getLastUpdated());
 
         writer.flush();
         writer.close();

app/src/processing/app/contrib/Contribution.java

@@ -43,6 +43,7 @@ abstract public class Contribution {
   protected String paragraph;     // <paragraph length description for site>
   protected int version;          // 102
   protected String prettyVersion; // "1.0.2"
+  protected long lastUpdated;   //  1402805757
   
   
   // "Sound"
@@ -120,6 +121,11 @@ abstract public class Contribution {
   public String getPrettyVersion() {
     return prettyVersion;
   }
+  
+  // 1402805757
+  public long getLastUpdated() {
+    return lastUpdated;
+  }
 
 
   abstract public ContributionType getType();

app/src/processing/app/contrib/ContributionPanel.java

@@ -28,6 +28,8 @@ import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import java.util.Date;
+import java.text.DateFormat;
 
 import javax.swing.*;
 import javax.swing.border.EmptyBorder;
@@ -373,6 +375,15 @@ class ContributionPanel extends JPanel {
         description.append("v" + version);
     }
     
+    long lastUpdatedUTC = contrib.getLastUpdated();
+    if (lastUpdatedUTC != 0) {
+      DateFormat dateFormatter = DateFormat.getDateInstance(DateFormat.MEDIUM);
+      Date lastUpdatedDate = new Date(lastUpdatedUTC);
+      if (version != null && !version.isEmpty())
+        description.append(", ");
+      description.append("Last Updated on " + dateFormatter.format(lastUpdatedDate));
+    }
+    
     description.append("</body></html>");
     //descriptionText.setText(description.toString());
     descriptionBlock.setText(description.toString());

app/src/processing/app/contrib/LocalContribution.java

@@ -1,4 +1,4 @@
-/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
+/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
 
 /*
   Part of the Processing project - http://processing.org
@@ -74,6 +74,13 @@ public abstract class LocalContribution extends Contribution {
         System.err.println("Please contact the library author to fix it according to the guidelines.");
       }
       prettyVersion = properties.get("prettyVersion");
+      try {
+        lastUpdated = Long.parseLong(properties.get("lastUpdated"));
+      } catch (NumberFormatException e) {
+        lastUpdated = 0;
+        System.err.println("The last updated timestamp for the “" + name + "” library is not set properly.");
+        System.err.println("Please contact the library author to fix it according to the guidelines.");
+      }
       
     } else {
       Base.log("No properties file at " + propertiesFile.getAbsolutePath());