package jas2.hist;
import jas2.plot.TextBlock;
import jas2.util.DoubleWithError;
import jas2.util.ScientificFormat;

import java.awt.Component;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.text.Format;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;

import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.SwingUtilities;

/**
 * The main class used to display and format statistics.
 * When a user selects showStatistics from the plots popupmenu, a statistics text block
 * is displayed showing each displayed plots' statistics (Vector stats) and name. The statistics block
 * requires a number formatting method to be set (setFormat), the default method is
 * implemented by jas2.util.ScientificFormat.
 */

public class StatisticsBlock extends TextBlock
{
   
   public StatisticsBlock()
   {
      this(new ScientificFormat());
   }
   
   public StatisticsBlock(Format g)
   {
      super("Statistics");
      //set default format types
      initializeDefaultFormats(g);
      setFormat(g);
   }
   /**
    * Calculates and returns the total number of lines to be displayed in the statistics block,
    * including a draw line seperator, plot title (if available) and formatted
    * statistics for each data set displayed in the plot area.
    */
   public int getNLines()
   {
      NothingToShow =false;
      if (stats.isEmpty()) return 1;
      
      int n = 0;
      for (int i=0; i1 && s.length>0))
      {
         addline = new String[s.length+2];
         addline[0] = "\n";
         addline[1] = "addplottitle";
         for(int i=0;i0)
      {
         addline = new String[s.length+1];
         addline[0] = "\n";
         for(int i=0;i0))
      {
         splitstringalign=a;
      }else throw new IllegalArgumentException("Integer splitstringalign must be set to 1,2 or 3");
   }
   
   /**Sets the (int) showtitles to one of three values:SHOWTITLES_ALWAYS,
    * SHOWTITLES_NEVER, SHOWTITLES_AUTOMATIC. The value controls when a plot title is
    * displayed in the stat block. If showtitles = SHOWTITLES_AUTOMATIC then titles will
    * be displayed if there is more than one plot displayed.
    */
   public void setShowTitles(int settitles)
   {
      if((settitles<4) && (settitles >0))
      {
         showtitles = settitles;
      }else throw new IllegalArgumentException("Integer showtitles must be set to 1,2 or 3");
   }
   /**Returns the (int) showtitles which has three values:SHOWTITLES_ALWAYS,
    * SHOWTITLES_NEVER, SHOWTITLES_AUTOMATIC. The value controls when a plot title is
    * displayed in the stat block. If showtitles = SHOWTITLES_AUTOMATIC then titles will
    * be displayed if there is more than one plot displayed.
    */
   public int getShowTitles()
   {
      return showtitles;
   }
   
   
   
   public void modifyPopupMenu(final JPopupMenu menu, final Component source)
   {
      if (menu.getComponentCount() > 0) menu.addSeparator();
      statpropertiesitem = new JMenuItem(getPrefix()+" Properties...")
      {
         protected void fireActionPerformed( final ActionEvent e)
         {
            statwin = new StatsWindow(StatisticsBlock.this);
            final Frame frame = (Frame) SwingUtilities.getAncestorOfClass(Frame.class, this);
            statwin.showStatsWindow();
         }
      };
      menu.add(statpropertiesitem);
      super.modifyPopupMenu(menu,source);
   }
   
   
   private boolean NothingToShow;
   private Format f;
   private Hashtable formats = new Hashtable();
   private StatsWindow statwin;
   private Vector stats = new Vector();
   private String[] selectedentries;
   private String[] listnames;
   private int showtitles = SHOWTITLES_AUTOMATIC;
   private int splitstringalign=RIGHTALIGNSPLIT;
   private String line;
   private JMenuItem statpropertiesitem;
   private boolean alwaysall=true;
   final public static int SHOWTITLES_ALWAYS = 1;
   final public static int SHOWTITLES_NEVER = 2;
   final public static int SHOWTITLES_AUTOMATIC = 3;
   final public static int LEFTALIGNSPLIT = 1;
   final public static int RIGHTALIGNSPLIT = 2;
   final public static int NOALIGNSPLIT = 3;
   
}