/* -------------------------------------------------------------------------- */
/*                                                                            */
/*                      TEXT MINING THRESHOLDS INPUT WINDOW                   */
/*                               Frans Coenen                                 */
/*                          Tuesday 28 February 2006                          */
/*                                                                            */
/* -------------------------------------------------------------------------- */

/** Window to input threshold parmeters. */
	
//package lucsKDD_ARM;

// Java packages

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

public class Thresholds extends JFrame implements ActionListener {

    /* ------------------------------------------------- */
    /*                                                   */
    /*                      FIELDS                       */
    /*                                                   */
    /* ------------------------------------------------- */

    // Constants
    /** array of threshold labels (also dictates ordering of defualt values). */
    private final static String[] THOLD_LABELS = {"Support (%)",
                                                "Confidence (%)", "Signifcance",
                                           "Upper Noise (%)","Lower Noise (%)"};
    /** Minimum thresholds value. */
    private final static double MIN_VALUE = 0.0;
    /** Maximum thresholds value. */
    private final static double MAX_VALUE = 100.0;

    // Other fields
    /** Instance of text mining model. */
    private TextMiningModel tmModel = null;
    /** Array of threshold default values. */
    private double[] tHoldValues = null;
    /** Array of instances of class JTextField. */
    private JTextField[] tHoldFields = new JTextField[THOLD_LABELS.length];

    /* ------------------------------------------------- */
    /*                                                   */
    /*                   CONSTRUCTORS                    */
    /*                                                   */
    /* ------------------------------------------------- */

    /** One argument constructor.
    @param newTMmodel new isntance of <TT>TextMiningModel</TT> class. */

    public Thresholds(TextMiningModel newTMmodel) {
        super("LUCS-KDD TEXT MINING GUI: Threshold input");

        // Set fields
        tmModel     = newTMmodel;
        tHoldValues = tmModel.getTholdValues();

	// Content pane
        getContentPane().setBackground(Color.pink);
	getContentPane().setLayout(new BorderLayout(5,5));

	// Set Layout
	JPanel panel = new JPanel();
	panel.setLayout(new GridLayout(5,5,2,THOLD_LABELS.length));

	// Heading and instruction instructions
	JPanel instructPanel = new JPanel();
	instructPanel.setBackground(Color.pink); 
	instructPanel.setLayout(new GridLayout(3,1));
	Label label1 = new Label("THRESHOLD INPUT");
	Label label2 = new Label("Instructions: Press enter to confirm " +
	                                                   "a changed value,");
	Label label3 = new Label("      and \"Set Thresholds\" to implement " +
			                                            "change.");
	instructPanel.add(label1);
	instructPanel.add(label2);
	instructPanel.add(label3);
	getContentPane().add(instructPanel,BorderLayout.NORTH);
	
	// Create fields
	JLabel[] lables = new JLabel[THOLD_LABELS.length];
	for (int index=0;index<THOLD_LABELS.length;index++) {
	    lables[index] = new JLabel("  " + THOLD_LABELS[index]);
	    panel.add(lables[index]);
	    tHoldFields[index] = new
	                 JTextField(Double.toString(tHoldValues[index]));
	    tHoldFields[index].addActionListener(this);
	    panel.add(tHoldFields[index]);
	    }
	getContentPane().add(panel,BorderLayout.CENTER);

	// Set Button
	JButton setButton = new JButton("Set Thresholds");
	setButton.addActionListener(this);
        getContentPane().add(setButton,BorderLayout.SOUTH);
	}

    /* ------------------------------------------------- */
    /*                                                   */
    /*                      METHODS                      */
    /*                                                   */
    /* ------------------------------------------------- */

    /* ACTION PERFORMED */

    /** Acrion performed method to processes textfield events.
    @param evemt instance od <TT>ActionEvent</TT> class. */

    public void actionPerformed(ActionEvent event) {
	String textString;

        // Check for set button
        if (event.getActionCommand().equals("Set Thresholds")) setInputTholds();
	// Else ID source field index
	else {
	    int index = 0;
	    for ( ;index<THOLD_LABELS.length;index++)
	                    if (event.getSource() == tHoldFields[index]) break;
	    // Set
	    try {
	        double value = Double.parseDouble(event.getActionCommand());
	        if (value<=MIN_VALUE || value>=MAX_VALUE) {
	            String s = "Input value for " + THOLD_LABELS[index] +
                        " threshold, " + value + ",\nnot between limits of " +
                                         MIN_VALUE + " and " + MAX_VALUE + "!";
                    JOptionPane.showMessageDialog(this,s,
                                                     "Threshold Input Error: ",
                                                    JOptionPane.ERROR_MESSAGE);
                    }
	        else tHoldValues[index] =
                                  Double.parseDouble(event.getActionCommand());
                }
            catch (NumberFormatException e) {
                JOptionPane.showMessageDialog(this,"Number format exception",
                                                     "Threshold Input Error: ",
                                                    JOptionPane.ERROR_MESSAGE);
                }
	    }
	}

    /* ----------------------------------------------------- */
    /*                                                       */
    /*                      SET METHODS                      */
    /*                                                       */
    /* ----------------------------------------------------- */

    /** Sets the file input thresholds for the given instance of the text
    mining model class.  */

    public void setInputTholds() {
        tmModel.setTholdValues(tHoldValues);
        
        // Test output
        /*tHoldValues = tmModel.getTholdValues();
        System.out.println("Thresholds: ");
        for(int index=0;index<tHoldValues.length;index++) {
            System.out.println(THOLD_LABELS[index] + " = " +
                                Double.toString(tHoldValues[index]));   
            } */
        }
    }