NodeInfo node = argObj("node");
  final WindowContext context = argObj("windowContext");
      
  Tabs tabs = context.get("/mainTabs");
  String selectedTab = tabs.selected();
  String nodeType = node.getType();
  
  boolean dbChanged = false;
  boolean tableChanged = false;
    
  log.debug("node type = " + nodeType);
  log.debug("selected tab = " + selectedTab);
  
  if ( nodeType == null )
  {
    tabs.select("Host");
    args().put("selectedTab", "Host");
    context.put("currentDB", null);
    script("resetTabsMySQL", args());
  }
  else if ( "db" == nodeType )
  {
     Panel tab = tabs.select("Database");
    
     if ( !node.getText().equals(context.get("currentDB")) )
     {
       dbChanged = true;
     }
  }
  else if ( "table" == nodeType )
  {
     String dbName = node.getParent().getText();
     Panel tab = tabs.get("Table");
     if ("Host" == selectedTab || "Database" == selectedTab)
     {
        tabs.select("Table");
     }
  
     if (!node.getParent().getText().equals(context.get("currentDB")))
     {
         dbChanged = true;
     }

     if ( !node.getText().equals(context.get("currentTable")) || dbChanged )
     {
        tableChanged = true;
     }
  }

  if (dbChanged)
  {
    String dbName = tabs.selected() == "Database"?node.getText():node.getParent().getText();
    log.debug("selectedTab: " + selectedTab + " dbName: " + dbName);
    context.put("currentDB", dbName);
    context.remove("currentTable");
    
    args().put("selectedTab", "Database");
    script("resetTabsMySQL", args());
    args().put("dbName", dbName);
    args().put("workerKey", dbName);
    Worker w = worker("showTableStatusMySQLWorker", args(), Worker.RunOption.LET_FINISH_IF_RUNNING);
    
    //in case its already running dont run the detector
    if (!w.isCancelled())
      LongRunningTask.detect(dbName, "progressWaiter",   args(), w , 250);
    
    //superficiality just to keep the pbar stack in order
    //since we cant guarantee which one of the threads will be detected long
    //in the "right" order"
    if ( tableChanged )
    {
      try
      {
        Thread.sleep(25);
      } catch (Exception e) {}
    }
  }

 if (tableChanged)
 {
   String dbName = node.getParent().getText();
   String tableName = node.getText();

   context.put("currentTable", tableName);

   args().put("dbName", dbName);
   args().put("tableName", tableName);
   args().put("workerKey", dbName+tableName);
   Worker w = worker("loadTableInfoMySQLWorker", args(), Worker.RunOption.LET_FINISH_IF_RUNNING);
   
   //in case its already running dont run the detector
   if ( !w.isCancelled() )
     LongRunningTask.detect(dbName+tableName, "progressWaiter", args(), w , 250);

   //superficial for the gui
   try
   {
     Thread.sleep(25);
   } catch (Exception e) {}
   
   args().put("workerKey", "loadTableDataMySQLWorker" + dbName + tableName);
   w = worker("loadTableDataMySQLWorker", args(), Worker.RunOption.LET_FINISH_IF_RUNNING);
   
   if ( !w.isCancelled() )
     LongRunningTask.detect("loadTableDataMySQLWorker" + dbName+tableName, "progressWaiter", args(), w , 250);
   
 }