import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * This Java applet gives an answer to the following question: 
 * "What date does the <first | second | ...> <Mon | Tues | ...> of 
 * <Jan | Feb | ...> of <any year> fall under?".
 *
 * For example: What date is the second Sunday of May of 2004 (Mother's day)?
 * 
 * Disclaimer: Use at your own risk.
 * No gurantee is implied by using this applet and I'm not responsible for 
 * any missed important dates :)
 * 
 * Copyright (c) 2004 - Jose Sandoval.
 * 
 * @author Jose Sandoval - http://www.josesandoval.com/
 * @version June 9, 2004
 */
public class GetDate extends Applet {
	private boolean isStandalone = false;
	Choice choiceDay = new Choice();
	Choice choiceOccurrence = new Choice();
	Label label3 = new Label();
	Choice choiceMonth = new Choice();
	FlowLayout flowLayout = new FlowLayout();
	BorderLayout borderLayout = new BorderLayout();
	Panel panelTop = new Panel();
	Panel panelCenter = new Panel();
	Label labelResult = new Label();
	Label label2 = new Label();
	TextField textFieldYear = new TextField();
	Button buttonGetDate = new Button();

	public GetDate() {
	}

	public void init() {
		try {
			myInit();

			// Occurrences
			choiceOccurrence.add("First");
			choiceOccurrence.add("Second");
			choiceOccurrence.add("Third");
			choiceOccurrence.add("Fourth");
			choiceOccurrence.add("Fifth");
			choiceOccurrence.add("Sixth");
			choiceOccurrence.add("Seventh");

			// Days
			choiceDay.add("Sunday");
			choiceDay.add("Monday");
			choiceDay.add("Tueday");
			choiceDay.add("Wednesday");
			choiceDay.add("Thurday");
			choiceDay.add("Friday");
			choiceDay.add("Saturday");

			// Months
			choiceMonth.add("January");
			choiceMonth.add("February");
			choiceMonth.add("March");
			choiceMonth.add("April");
			choiceMonth.add("May");
			choiceMonth.add("June");
			choiceMonth.add("July");
			choiceMonth.add("August");
			choiceMonth.add("September");
			choiceMonth.add("October");
			choiceMonth.add("November");
			choiceMonth.add("December");

			// Year
			Calendar tvCalendar = Calendar.getInstance();
			textFieldYear.setText("" + tvCalendar.get(Calendar.YEAR));
		}
		catch(Exception e) {
			e.printStackTrace();
		}
	}

	private void myInit() throws Exception {
		this.setBackground(Color.white);
		this.setLayout(borderLayout);
		label3.setText("of");
		labelResult.setFont(new java.awt.Font("Dialog", 1, 16));
		labelResult.setText("Usage: Select your query and click the \"Get Date\" button.");
		label2.setText("year");
		textFieldYear.setText("textField1");
		buttonGetDate.setLabel("Get Date");

		// Top panel
		panelTop.setLayout(flowLayout);
		panelTop.add(choiceOccurrence, null);
		panelTop.add(choiceDay, null);
		panelTop.add(label3, null);
		panelTop.add(choiceMonth, null);
		panelTop.add(label2, null);
		panelTop.add(textFieldYear, null);
		panelTop.add(buttonGetDate, null);

		// Center panel
		panelCenter.setLayout(flowLayout);
		panelCenter.add(labelResult, null);

		this.add("North", panelTop);
		this.add("Center", panelCenter);
	}

	public String getAppletInfo() {
		return "Stupid Date Trick";
	}

	public boolean action(Event e, Object o) {
		if (e.target.equals(buttonGetDate)) {
			getDate();
		}
		return true;
	}

	private void getDate() {
		Calendar tvCalendar = Calendar.getInstance();
		String tvYear = textFieldYear.getText();
		int tvMonth = choiceMonth.getSelectedIndex();
		int tvDay = choiceDay.getSelectedIndex() + 1;
		int tvOccurrence = choiceOccurrence.getSelectedIndex() + 1;
		if (tvYear != null && tvYear.length() > 0) {
		    try {
			tvCalendar.set(Integer.parseInt(tvYear), tvMonth, 1, 0, 0, 0);

			while (tvCalendar.get(Calendar.DAY_OF_WEEK) != tvDay) {
				tvCalendar.add(Calendar.DAY_OF_WEEK, 1);
			}

			for (int i = 0; i<tvOccurrence - 1; i++) {
				for (int j=0; j<7; j++) {
					tvCalendar.add(Calendar.DAY_OF_MONTH, 1);
				}
			}

			if (tvCalendar.get(Calendar.MONTH) == tvMonth) {
				SimpleDateFormat tvDateFormat = new SimpleDateFormat("EEE, MMM dd, yyyy");
				setResult(tvDateFormat.format(tvCalendar.getTime()));
				System.out.println(tvCalendar.getTime().toString());
			} else {
				setResult("Date overlaps months.");
			}
		    } catch (Exception e) {
			setResult("Invalid Year.");
		    }
		} else {
			setResult("Invalid Year.");
			return;
		}
	}

	private void setResult(String message) {
	    labelResult.setText("                                " + message);
	}
}