/* Copyright 2000 Charles G. Wright
 * This software may be distributed under the terms of the
 * GNU General Public License.
 *
 * $Id: GRAdaygraph.java,v 1.1 2000-06-15 10:14:54-05 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 GRAdaygraph extends GRAgraph implements ActionListener {

  public static final String name = "Day Graph";
  private CWselect day_selector;
  private CWselect month_selector;
  private GRAph gr1;
  private ScrollPane sp1;
  private Color[] colors;
  private int[] fieldnums;
  private TMYgraphMaster parent;
  private UnitConverter uc;

  public GRAdaygraph(Color[] colors, TMYgraphMaster parent){
    this.parent = parent;
    this.colors = colors;

    System.out.println("constructor for GRAdaygraph");
    // Create the data object, then plot some data
    gr1 = new GRAph(colors);
    gr1.gridOn = true;
    gr1.xAxisMode = GRAph.TIME;

    sp1 = new ScrollPane(ScrollPane.SCROLLBARS_NEVER);
    sp1.add(gr1);

    GridBagLayout p1layout = new GridBagLayout();
    setLayout(p1layout);

    GridBagConstraints c1 = new GridBagConstraints();

    c1.fill = GridBagConstraints.BOTH;
    c1.gridwidth = GridBagConstraints.REMAINDER;
    c1.weightx = 1.0;
    c1.weighty = 1.0;
    p1layout.setConstraints(sp1, c1);
    add(sp1);

    c1.weighty = 0.0;
    c1.weightx = 0.0;
    month_selector = new CWselect(TMYdata.MONTHS, "Month", 0);
    month_selector.addActionListener(this);
    c1.fill = GridBagConstraints.NONE;
    c1.gridwidth = 1;
    c1.weighty = 0.0;
    p1layout.setConstraints(month_selector, c1);
    add(month_selector);

    day_selector = new CWselect(TMYdata.days, "Day", 0);
    day_selector.addActionListener(this);
    p1layout.setConstraints(day_selector, c1);
    add(day_selector);
    System.out.println("end constructor for GRAdaygraph");
    uc = new UnitConverter(UnitConverter.NOTHING);
    uc.addObserver(this);
  }

  /** extract 1 day's data */
  private double[][] getDailyData(CWmonitorable obj, int month, int day, int fieldnum){
    double data_element;
    int[] field_types = obj.getFieldTypes();
    double[][] daily_data = new double[2][24];
    int hour_base = (GRAph.MONTH_DAYS[month] + day) * 24;
    for (int i = 0; i < 24; i++) {
      daily_data[0][i] = (double)(i + hour_base);
      data_element = obj.getValue(month, day, i, fieldnum);
      daily_data[1][i] = UnitConverter.getConvertedValue(data_element, 
							field_types[fieldnum]);
    }
    return(daily_data);
  }

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

  void updateDayGraph(){
    if ((fieldnums != null) && (fieldnums.length != 0)){
      int index;
      CWmonitorable obj;
      //gr1.ymax = tmystuff.getHighValue(fieldnums);
      //gr1.ymin = tmystuff.getLowValue(fieldnums);
      double plotdat[][][] = new double[fieldnums.length][][];
      for (int i = 0; i < fieldnums.length; i++){
	index = CWmonitoredElements.indexAt(fieldnums[i]);
	obj = CWmonitoredElements.objectAt(fieldnums[i]);
	plotdat[i] = getDailyData(obj, month_selector.getSelectedIndex(),
				  day_selector.getSelectedIndex(), index);
      }
      gr1.autoscale(plotdat);
      gr1.graphit(plotdat);
      gr1.repaint();
    }
  }

  // Come here when the CWselect widget is changed, to carry out
  // consequences of change.

  public void actionPerformed(ActionEvent ae){

    CWselect sel = (CWselect)ae.getSource();

    // System.out.println("updateSomething()" + sel + something_loaded);

     // Handle interactions between month and day selectors.
    if (sel == month_selector){
      day_selector.setMaxIndex(TMYdata.MONTHLENGTH[sel.getSelectedIndex()] - 1);
      if ((fieldnums != null) && (fieldnums.length > 0)) updateDayGraph(); 
      System.out.println("Month_Selector was hit");
    } else if (sel == day_selector){
      if (sel.wrap_up == true){
	month_selector.incrementIndex();
	sel.setMaxIndex(TMYdata.MONTHLENGTH[month_selector.getSelectedIndex()] - 1);
      }
      if (sel.wrap_down == true){
	month_selector.decrementIndex();
	sel.setMaxIndex(TMYdata.MONTHLENGTH[month_selector.getSelectedIndex()] - 1);
      }
      if ((fieldnums != null) && (fieldnums.length > 0)) updateDayGraph(); 
    }
  }
}