/* Copyright 2000 Charles G. Wright
 * This software may be distributed under the terms of the
 * GNU General Public License.
 *
 * $Id: GRAhourgraph.java,v 1.1 2000-06-15 10:14:56-05 chuckles Exp chuckles $
 */

// Class to test out the graphing object.

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class GRAhourgraph extends GRAgraph implements ActionListener, Observer{

  public static final String name = "Hour Graph";
  private CWselect hour_selector;
  private GRAph gr2;
  private ScrollPane sp2;
  private int[] fieldnums;
  private TMYgraphMaster parent;
  private UnitConverter uc;

  /** Constructor */
  public GRAhourgraph(Color[] colors, TMYgraphMaster parent){

    this.parent = parent;
    // Create the data object, then plot some data
    gr2 = new GRAph(colors);
    gr2.gridOn = true;
    gr2.xAxisMode = GRAph.TIME;

    sp2 = new ScrollPane(ScrollPane.SCROLLBARS_NEVER);
    sp2.add(gr2);

    GridBagLayout p2layout = new GridBagLayout();

    setLayout(p2layout);

    GridBagConstraints c1 = new GridBagConstraints();

    c1.fill = GridBagConstraints.BOTH;
    c1.gridwidth = GridBagConstraints.REMAINDER;
    c1.weightx = 1.0;
    c1.weighty = 1.0;
    p2layout.setConstraints(sp2, c1);
    add(sp2);

    c1.weighty = 0.0;
    c1.weightx = 0.0;
    hour_selector = new CWselect(TMYdata.hours, "Hour", 0);
    hour_selector.addActionListener(this);
    c1.fill = GridBagConstraints.NONE;
    c1.gridwidth = 1;
    c1.weighty = 0.0;
    p2layout.setConstraints(hour_selector, c1);
    add(hour_selector);

    uc = new UnitConverter(UnitConverter.NOTHING);
    uc.addObserver(this);
  }

  /** extract 1 year's data at specified hour */
  private double[][] getHourlyData(CWmonitorable obj, int hour, int fieldnum){
    double data_element;
    int[] field_types = obj.getFieldTypes();
    double[][] hourly_data = new double[2][365];
    int i = 0;
    int base_hour_in_year = 0;
    System.out.println("Retrieving hourly data for " + 
		       obj.getName() + " , field number " + fieldnum);
    for (int month = 0; month < 12; month++) {
      for (int day  = 0; day < TMYdata.daysInMonth(month); day++){
	hourly_data[0][i] = (double)(base_hour_in_year + hour);
	data_element = obj.getValue(month, day, hour, fieldnum);
	hourly_data[1][i] = UnitConverter.getConvertedValue(data_element,
							    field_types[fieldnum]);
	i++;
	base_hour_in_year += 24;
	//System.out.println(hourly_data[0][i]+ " " + hourly_data[1][i]);
      }
    }
    return(hourly_data);
  }

  /** Implements the Observer interface. */
  public void update(Observable obs,  Object parent){
    fieldnums = this.parent.getFieldList().getSelectedIndexes();
    updateHourGraph();
  }

  public void updateHourGraph(){
    if (fieldnums.length > 0){
      int index;
      CWmonitorable obj;

      //gr2.ymax = tmystuff.getHighValue(fieldnums);
      //gr2.ymin = tmystuff.getLowValue(fieldnums);
      
      //System.out.println("updateHourGraph() 5"); 
      double plotdat[][][] = new double[fieldnums.length][][];
      //System.out.println("updateHourGraph() 6"); 
      for (int i = 0; i < fieldnums.length; i++){
	index = CWmonitoredElements.indexAt(fieldnums[i]);
	obj = CWmonitoredElements.objectAt(fieldnums[i]);
	plotdat[i] = getHourlyData(obj, hour_selector.getSelectedIndex(), index);
      }
      //System.out.println("updateHourGraph() 7"); 
      gr2.autoscale(plotdat);
      gr2.graphit(plotdat);
      gr2.repaint();
    }
  }

  public void actionPerformed(ActionEvent ae){
    CWselect sel = (CWselect)ae.getSource();
    if (sel == hour_selector){
       updateHourGraph();
    }
  }
}