package Gui.Param;

import Obj.*;

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

public class LambdInputDlg extends JDialog {
    
    private int buttonHit;
    private JTextField lambdField;
    
    // Buttons
    private JButton okButton;
    private JButton cancelButton;
    private JButton defaultButton;
    
    // Data
    private float lambd = 1.0f;	

    // Data Model
    private NSimObj sim;  	

    public LambdInputDlg(Component owner, NSimObj sim, boolean def){
	
	this.sim = sim;
	
	JLabel l1 = new JLabel("Set  LAMBDA:");
	
	lambdField = new JTextField(10);
	lambdField.setText("1.0");
	JPanel p1 = new JPanel();
	p1.add(lambdField);
	
	ActionListener listener = new ActionListener(){
		public void actionPerformed(ActionEvent event){
		    if(event.getActionCommand().equals("Default")){
			reset();
			return;
		    }
	
		    if(event.getActionCommand().equals("ok")){
			if(!validateData())
 				return;
			buttonHit = JOptionPane.OK_OPTION;
		    }
		    if(event.getActionCommand().equals("cancel")){
			buttonHit = JOptionPane.CANCEL_OPTION;
			reset();
		    }
		    		    
		    // disappear the current dialog box
		    setVisible(false);

		}
	    };


	//Create Buttons
	okButton = new JButton("   OK  ");
	okButton.setActionCommand("ok");
	okButton.addActionListener(listener);
	cancelButton = new JButton("Cancel ");      
	cancelButton.setActionCommand("cancel");
	cancelButton.addActionListener(listener);
	defaultButton = new JButton("Default");
	defaultButton.addActionListener(listener);
	
	JPanel labelPane = new JPanel();
	labelPane.setLayout(new GridLayout(0, 1));
	labelPane.add(l1);
	
	//Layout the text fields in a panel.
        JPanel fieldPane = new JPanel();
        fieldPane.setLayout(new GridLayout(0, 1));
       	
	fieldPane.add(p1);
	
	//Layout the buttons in a panel
	JPanel buttonPane = new JPanel();
	buttonPane.add(cancelButton);
	buttonPane.add(defaultButton);
	buttonPane.add(okButton);
	
	//Put the panels in another panel, labels on left,
        //text fields on right.
        JPanel contentPane = new JPanel();
        contentPane.setBorder(BorderFactory.createEmptyBorder(20, 20, 4, 20));
	GridBagLayout gridbag = new GridBagLayout();
        GridBagConstraints c = new GridBagConstraints();
        contentPane.setLayout(gridbag);

	c.fill = GridBagConstraints.BOTH;
	c.gridx = 0;
	c.gridy = 0;
	c.insets = new Insets(20,0,0,0);

	gridbag.setConstraints(labelPane, c);
	contentPane.add(labelPane);

	c.gridx = 1;
	gridbag.setConstraints(fieldPane, c);
	contentPane.add(fieldPane);
	
	c.gridx = 0;
	c.gridy =1;
	c.gridwidth = 2;
	c.insets = new Insets(25,20,20,20);
	gridbag.setConstraints(buttonPane, c);
        contentPane.add(buttonPane);
        setContentPane(contentPane);
	setLocationRelativeTo(owner);

	if(!sim.isNew() && !def){
	    lambd = sim.LAMBDA;
	    lambdField.setText(""+lambd);
	}

    }
    
    public void reset(){
	lambdField.setText("1.0");
      lambd = 1.0f;
    }
    
    public int showDialog(){
	setModal(true);
	pack();
	super.show();
	return buttonHit;
    }
    
    public boolean validateData() {
       String errString = ""; 
   
       String tmp = lambdField.getText();
       try {
	     lambd = Float.parseFloat(tmp);
	 }catch (NumberFormatException e){
	     errString += new String("\nLAMBDA Must be a Real Number");
	 }
   
      if(errString.compareTo("")!=0){
	  String prefix = "Errors:\n";
	  errString = prefix.concat(errString);
	  errString += new String("\n\n");
	  JOptionPane.showMessageDialog(this,
					  errString,
					  "errors",
					  JOptionPane.ERROR_MESSAGE);
       return false;
    }

    return true;
  }
    
  public void updateData(){
	sim.LAMBDA = lambd;
  }	
 
 }