moa TaskManagerPanel patch

--- moa-svn/moa-datastream/trunk/src/main/java/moa/gui/TaskManagerPanel.java
+++ machine-learning-incremental/moa-datastream/trunk/src/main/java/moa/gui/TaskManagerPanel.java
@@ -24,11 +24,18 @@
 import java.awt.Dimension;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;

 import javax.swing.JButton;
+import javax.swing.JFileChooser;
 import javax.swing.JFrame;
+import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JProgressBar;
 import javax.swing.JScrollPane;
@@ -61,6 +68,8 @@
     private static final long serialVersionUID = 1L;

     public static final int MILLISECS_BETWEEN_REFRESH = 600;
+
+    public static String exportFileExtension = "log";

     public class ProgressCellRenderer extends JProgressBar implements
             TableCellRenderer {
@@ -187,6 +196,10 @@
     protected JButton cancelTaskButton = new JButton("Cancel");

     protected JButton deleteTaskButton = new JButton("Delete");
+
+    protected JButton saveLogButton = new JButton("Save Log");
+
+    protected JButton setTaskButton = new JButton("Set task manually");

     protected PreviewPanel previewPanel;

@@ -213,6 +226,8 @@
         controlPanel.add(this.resumeTaskButton);
         controlPanel.add(this.cancelTaskButton);
         controlPanel.add(this.deleteTaskButton);
+        controlPanel.add(this.saveLogButton);
+        controlPanel.add(this.setTaskButton);
         setLayout(new BorderLayout());
         add(configPanel, BorderLayout.NORTH);
         add(new JScrollPane(this.taskTable), BorderLayout.CENTER);
@@ -268,6 +283,21 @@
             @Override
             public void actionPerformed(ActionEvent arg0) {
                 deleteSelectedTasks();
+            }
+        });
+        this.saveLogButton.addActionListener(new ActionListener() {
+
+            @Override
+            public void actionPerformed(ActionEvent arg0) {
+                saveLogSelectedTasks();
+             }
+         });
+        this.setTaskButton.addActionListener(new ActionListener() {
+
+            @Override
+            public void actionPerformed(ActionEvent arg0) {
+               String newTaskString = JOptionPane.showInputDialog("Insert command line");
+                setTaskString(newTaskString);
             }
         });
         javax.swing.Timer updateListTimer = new javax.swing.Timer(
@@ -354,6 +384,37 @@
         }
         this.taskTableModel.fireTableDataChanged();
     }
+
+   public void saveLogSelectedTasks() {
+           String tasksLog = "";
+           TaskThread[] selectedTasks = getSelectedTasks();
+           for (TaskThread thread : selectedTasks) {
+               tasksLog += ((OptionHandler) thread.getTask()).getCLICreationString(MainTask.class) + "\n";
+           }
+
+           JFileChooser fileChooser = new JFileChooser();
+           fileChooser.setAcceptAllFileFilterUsed(true);
+           fileChooser.addChoosableFileFilter(new FileExtensionFilter(
+                   exportFileExtension));
+           if (fileChooser.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
+               File chosenFile = fileChooser.getSelectedFile();
+               String fileName = chosenFile.getPath();
+               if (!chosenFile.exists()
+                       && !fileName.endsWith(exportFileExtension)) {
+                   fileName = fileName + "." + exportFileExtension;
+               }
+               try {
+                   PrintWriter out = new PrintWriter(new BufferedWriter(
+                           new FileWriter(fileName)));
+                   out.write(tasksLog);
+                   out.close();
+               } catch (IOException ioe) {
+                   GUIUtils.showExceptionDialog(
+                           this.saveLogButton,
+                           "Problem saving file " + fileName, ioe);
+               }
+           }
+       }

     private static void createAndShowGUI() {