/* infoField.java
   Paul Carlisle
   
   Displays the information generated by the Moon calculations.
   Distance, rise, set for Sun and Moon.
   
   Only redraws items which are different from those already
   set; this cuts down on screen flicker in some browsers.

*/

import java.awt.*;
import java.lang.*;
import JDate;
import textHelpPanel;

public class infoField extends Panel
{
   public static int NONE = 0;
   public static int HELP_REQUESTED = 1;
   private textHelpPanel help;
   private int messageID = NONE;
   private boolean gotMessage = false;
   private Label date, time;
   private Label moonDistLabel, moonDist;
   private Label moonRiseLabel, moonRise;
   private Label moonSetLabel, moonSet;
   private Label sunDistLabel, sunDist;
   private Label sunRiseLabel, sunRise;
   private Label sunSetLabel, sunSet;
   private Panel holdingPanel;
   
   private GridBagLayout mainLayout;
   private GridBagConstraints mainConstraints;
   private GridBagLayout myLayout;
   

   public infoField(Font font, textHelpPanel helpPanel)
   {
	  help = helpPanel;
	  
	  myLayout = new GridBagLayout();
	  setLayout(myLayout);
	  
	  setFont(font);
	  setBackground(Color.gray);
	  
	  // If you've been following along with the rest of the
	  // modules, this sort of layout code should look pretty
	  // familiar by now...
	  holdingPanel = new Panel();
   
	  mainLayout = new GridBagLayout();
	  mainConstraints = new GridBagConstraints();
	  
	  holdingPanel.setLayout(mainLayout);
	  
	  holdingPanel.setFont(font);
	  holdingPanel.setBackground(Color.gray);
	  
	  date = new Label(" ", Label.RIGHT);
	  time = new Label(" ", Label.LEFT);
	 
	  moonDistLabel = new Label("Moon's Distance : ", Label.RIGHT);
	  moonDist = new Label(" ", Label.LEFT);
	  
	  moonRiseLabel = new Label("Moonrise : ", Label.RIGHT);
	  moonRise = new Label(" ", Label.LEFT);
	  
	  moonSetLabel = new Label("Moonset : ", Label.RIGHT);
	  moonSet = new Label(" ", Label.LEFT);
	  
	  sunDistLabel = new Label("Sun's Distance : ", Label.RIGHT);
	  sunDist = new Label(" ", Label.LEFT);
	  
	  sunRiseLabel = new Label("Sunrise : ", Label.RIGHT);
	  sunRise = new Label(" ", Label.LEFT);
	  
	  sunSetLabel = new Label("Sunset : ", Label.RIGHT);
	  sunSet = new Label(" ", Label.LEFT);
	 
	  mainConstraints.fill = GridBagConstraints.NONE;
	  mainConstraints.insets = new Insets(0, 0, 0, 0);
	  
	  mainConstraints.gridy = 0;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(date, mainConstraints);
	  holdingPanel.add(date);
	  mainConstraints.gridy = 0;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(time, mainConstraints);
	  holdingPanel.add(time);
 
	  mainConstraints.gridy = 1;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(moonDistLabel, mainConstraints);
	  holdingPanel.add(moonDistLabel);
	  mainConstraints.gridy = 1;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(moonDist, mainConstraints);
	  holdingPanel.add(moonDist);
	  
	  mainConstraints.gridy = 2;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(moonRiseLabel, mainConstraints);
	  holdingPanel.add(moonRiseLabel);
	  mainConstraints.gridy = 2;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(moonRise, mainConstraints);
	  holdingPanel.add(moonRise);
	  
	  mainConstraints.gridy = 3;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(moonSetLabel, mainConstraints);
	  holdingPanel.add(moonSetLabel);
	  mainConstraints.gridy = 3;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(moonSet, mainConstraints);
	  holdingPanel.add(moonSet);
	  
	  mainConstraints.gridy = 4;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(sunDistLabel, mainConstraints);
	  holdingPanel.add(sunDistLabel);
	  mainConstraints.gridy = 4;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(sunDist, mainConstraints);
	  holdingPanel.add(sunDist);
	  
	  mainConstraints.gridy = 5;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(sunRiseLabel, mainConstraints);
	  holdingPanel.add(sunRiseLabel);
	  mainConstraints.gridy = 5;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(sunRise, mainConstraints);
	  holdingPanel.add(sunRise);
	  
	  mainConstraints.gridy = 6;
	  mainConstraints.gridx = 0;
	  mainConstraints.anchor = GridBagConstraints.EAST;
	  mainLayout.setConstraints(sunSetLabel, mainConstraints);
	  holdingPanel.add(sunSetLabel);
	  mainConstraints.gridy = 6;
	  mainConstraints.gridx = 1;
	  mainConstraints.anchor = GridBagConstraints.WEST;
	  mainLayout.setConstraints(sunSet, mainConstraints);
	  holdingPanel.add(sunSet);
	  
	  setLayout(myLayout);
	  
	  mainConstraints.gridy = 0;
	  mainConstraints.gridx = 0;
	  mainConstraints.fill = GridBagConstraints.NONE;
	  mainConstraints.anchor = GridBagConstraints.CENTER;
	  mainConstraints.insets = new Insets(1, 1, 1, 1);
	  myLayout.setConstraints(holdingPanel, mainConstraints);
	  add(holdingPanel);
	  
   }   
   public boolean getMessage()
   {
	  boolean temp = gotMessage;
	  gotMessage = false;
	  return temp;
   }    
   public int getMessageID()
   {
	  return messageID;
   }   
   public boolean handleEvent(Event e)
   {
	  if (e.id != Event.MOUSE_DOWN)
		 return true;
	  
	  boolean result = false;
	  messageID = HELP_REQUESTED;
	  gotMessage = true;
	  help.getHelp("Info");
	  
	  return result;
   }   
   public void paint(Graphics g)
   {
	  Dimension d = size();
	  g.setColor(Color.black);
	  g.drawRect(0, 0, d.width - 1, d.height - 1);
	  g.dispose();
   }   
   // Redraw items which have changed.
   public void reset(String dt, String tm, double moonD, String mr, String ms,
					 double sunD, String sr, String ss)
   {
	  String md = ' ' + Integer.toString((int)moonD) + " km";
	  
	  String sd = ' ' + Integer.toString((int)sunD) + " km";
	  
	  // Update text fields, if they changed.
	  if (date.getText() != dt)
		 date.setText(dt + " : ");
	  if (time.getText() != tm)
		 time.setText(tm);
	  if (moonDist.getText() != md)
		 moonDist.setText(md);
	  if (moonRise.getText() != mr)
		 moonRise.setText(mr);
	  if (moonSet.getText() != ms)
		 moonSet.setText(ms);
	  if (sunDist.getText() != sd)
		 sunDist.setText(sd);
	  if (sunRise.getText() != sr)
		 sunRise.setText(sr);
	  if (sunSet.getText() != ss)
		 sunSet.setText(ss);
   }   
   public void update(Graphics g)
   {
	  repaint();
   }   
}