/*
 A basic implementation of the JDialog class.
 */
package usda.weru.mcrew;

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

/**
 * This class basically is responsible for the changes that happen to the date cell in
 * main table of MCREW screen.
 */
public class DateChange extends usda.weru.mcrew.gui.DateChange_n {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor that sets the default date in date column cells of the MCREW table when
     * MCREW is instantiated from the WEPS main screen.
     * @param parent The frame in which the table sits i:e the container.
     */
    public DateChange(Frame parent) {
        super(parent);
        setTitle("Adjust Date");
        updateFields();
        JTF_year.setText("1");
        JTF_month.setText("1");
        JTF_day.setText("7");
        delta = 1;
        //}}
    }

    /**
     * The basic constructor that makes calls to the one argument constructor passing the
     * frame object that is needed for holding the table.
     */
    public DateChange() {
        this((Frame) null);
    }

    /**
     * The constructor for date change
     * @param sTitle The title of the frame that hold the table,
     */
    public DateChange(String sTitle) {
        this();
        setTitle(sTitle);
    }

    /**
     * Main method that instantiates the DateChange object.
     * @param args
     */
    static public void main(String args[]) {
        (new DateChange()).setVisible(true);
    }

    private void updateFields() {
        String dir = "";
        String unit = "";

        dir = (JRB_increment.isSelected()) ? "Increment" : "Decrement";

        JTF_year.setVisible(false);
        JTF_month.setVisible(false);
        JTF_day.setVisible(false);

        if (JRB_year.isSelected()) {
            unit = "years";
            JTF_year.setVisible(true);
            delta = Integer.parseInt(JTF_year.getText().trim()); // added by Sada on July, 02, 03
			/* Consider the case, where in  the user just selects a different radio button thna the default 
             * and then clicks OK. Now delta contains 1 as intialized in the cconstructor. But the default values for other 
             * fields are different
             */
        } else if (JRB_month.isSelected()) {
            unit = "months";
            JTF_month.setVisible(true);
            delta = Integer.parseInt(JTF_month.getText().trim());
        } else {
            unit = "days";
            JTF_day.setVisible(true);
            delta = Integer.parseInt(JTF_day.getText().trim());
        }
    }

    @Override
    public void JRBYear_itemStateChanged(java.awt.event.ItemEvent event) {
        if (event.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            updateFields();
        }
    }

    @Override
    public void JRBMonth_itemStateChanged(java.awt.event.ItemEvent event) {
        if (event.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            updateFields();
        }
    }

    @Override
    public void JRBDay_itemStateChanged(java.awt.event.ItemEvent event) {
        if (event.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            updateFields();
        }
    }

    @Override
    public void JRBIncrement_itemStateChanged(java.awt.event.ItemEvent event) {
        if (event.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            updateFields();
        }
    }

    @Override
    public void JRBDecrement_itemStateChanged(java.awt.event.ItemEvent event) {
        if (event.getStateChange() == java.awt.event.ItemEvent.SELECTED) {
            updateFields();
        }

    }

    /**
     * Holds the integer value for the date field.
     */
    public int delta = 0;

    private void validateInt(JTextField jtf) {
        String valStr = jtf.getText().trim();
        try {
            delta = (valStr.length() == 0) ? 0 : Integer.parseInt(valStr);
        } catch (Exception e) {
            JOptionPane.showMessageDialog(this,
                    "Invalid number " + valStr,
                    "Error converting number",
                    JOptionPane.ERROR_MESSAGE);
            usda.weru.util.Util.setFocus(jtf);
        }
    }

    @Override
    public void JTFYear_actionPerformed(java.awt.event.ActionEvent event) {
        validateInt(JTF_year);
    }

    @Override
    public void JTFMonth_actionPerformed(java.awt.event.ActionEvent event) {
        validateInt(JTF_month);
    }

    @Override
    public void JTFDay_actionPerformed(java.awt.event.ActionEvent event) {
        validateInt(JTF_day);
    }

    @Override
    public void JTFYear_focusLost(java.awt.event.FocusEvent event) {
        if (event.isTemporary()) {
            return;
        }
        validateInt(JTF_year);
    }

    @Override
    public void JTFMonth_focusLost(java.awt.event.FocusEvent event) {
        if (event.isTemporary()) {
            return;
        }
        validateInt(JTF_month);
    }

    @Override
    public void JTFDay_focusLost(java.awt.event.FocusEvent event) {
        if (event.isTemporary()) {
            return;
        }
        validateInt(JTF_day);
    }

    /**
     * Stores the integer value for year/month/day converted from the text value.
     */
    public int type = 0;

    ;
	
    @Override
    public void JBOK_actionPerformed(java.awt.event.ActionEvent event) {
        this.setVisible(false);
        setModal(false);
        if (JRB_year.isSelected()) {
            type = JulianCalendar.YEAR;
        } else if (JRB_month.isSelected()) {
            //System.out.println("Month selected");
            type = JulianCalendar.MONTH;
        } else {
            type = JulianCalendar.DAY_OF_MONTH;
        }
        if (JRB_decrement.isSelected()) {
            delta = -delta;
        }
        //System.out.println("DataChange:JB_OK" + delta);
    }

    @Override
    public void JBCancel_actionPerformed(java.awt.event.ActionEvent event) {
        this.setVisible(false);
        setModal(false);
        type = 0;
    }
}