import java.util.*;
  
  String event = arg("workerEvent");
  
  if ( event == "init" || event == "done")
  {
    return;
  }
  
  WindowContext context = argObj("windowContext");
  Text banner = context.get("/mainTabs/Table/toolbar/banner");
  Panel tab = context.get("/mainTabs/Table");
  Worker worker = argObj("worker");
  Table table = context.get("/mainTabs/Table/table");
  Toolbar tb = context.get("/mainTabs/Table/toolbar");
  String tableName = arg("tableName");
  String dbName = arg("dbName");
  boolean setRefresh = false;

  
  if ( event == "longRunningTask" || event == "alreadyRunning")
  {
    if ( worker.isDone() && event=="longRunningTask" )
      return;
    
    if ( tableName.equals((String)context.get("currentTable")) &&
         dbName.equals((String)context.get("currentDB")))
    {
      banner.setText("Table properties for " + dbName + "." + tableName + " (loading)");
      table.clear();
      tb.updateUI();
      
      if ( event == "longRunningTask" )
      {
        ToolbarButton btn = context.get("/mainTabs/Table/toolbar/New Field");
        btn.setEnabled(false);
  
        btn = context.get("/mainTabs/Table/toolbar/Manage Indexes");
        btn.setEnabled(false);
      }
    }
  }
  else if ( event == "cancelled" )
  {
    DB db = worker.getProperty("db");
    
    if ( db != null )
      db.cancel();
    
    if ( tableName.equals((String)context.get("currentTable")) &&
         dbName.equals((String)context.get("currentDB")))
    {
      banner.setText("Table properties for " + dbName + "." + tableName + " (load canceled)");
      setRefresh = true;
    }
    
  }
  else if ( event == "backgroundTask" )
  {
    DB db = new SQLLoggingDB((SQLLoggingDB)context.get("db"));

    worker.setProperty("db", db);
    worker.setProperty("waitOperation", "show full columns from `" + dbName + "`.`" + tableName + "`");
    
    DB.Result tables = db.execute("show full columns from `" + dbName + "`.`" + tableName + "`");
    
    /*try
    {
      Thread.sleep(5000);
    } catch (Exception e) {}*/

    publish(tables);

  }
  else if ( event == "update")
  {
  
    DB.Result tables = (DB.Result)((List)argObj("taskResult")).get(0);

    if ( tableName.equals((String)context.get("currentTable")) &&
         dbName.equals((String)context.get("currentDB")))
    {
      
      banner.setText("Table properties for " + dbName + "." + tableName );
      TableUtils.populate(table, tables);
      
      ToolbarButton btn = context.get("/mainTabs/Table/toolbar/New Field");
      btn.setEnabled(true);
  
      btn = context.get("/mainTabs/Table/toolbar/Manage Indexes");
      btn.setEnabled(true);
      setRefresh = true;
    
    }

  }
  
  if ( setRefresh )
  {
    tab.setProperty("refreshScript", "loadTableInfoMySQLWorker");
    tab.setProperty("refreshArgs", args());
  }