import java.awt.FlowLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;

public class EmployeeUserInterface extends JFrame {

	private static final int FRAME_WIDTH = 600;
	private static final int FRAME_HEIGHT = 650;
	private static final int AREA_ROWS = 4;
	private static final int AREA_COLUMNS = 10; // Create a non static integer
	private static final int FIELD_WIDTH = 10;

	private JLabel eId, eTelephone, eName, eYears;
	private JTextField eIdField, eTelephoneField, eNameField, eYearsField;
	private JButton buttonPrevious, buttonNext, buttonDisplayAll, buttonExit;
	private JTextArea employeeRecords;

	public EmployeeUserInterface() {

		setTitle("Employee Record Browser");

		employeeRecords = new JTextArea(AREA_ROWS, AREA_COLUMNS);
		employeeRecords.setEditable(false);

		createTextField();
		createPanel();
		createButton();

		setSize(FRAME_WIDTH, FRAME_HEIGHT);

	}

	private void createTextField() {

		eId = new JLabel("Employee Identification");
		eIdField = new JTextField(FIELD_WIDTH);
		eIdField.setText("Test");
		eIdField.setEnabled(false);

		eTelephone = new JLabel("Telephone Number");
		eTelephoneField = new JTextField(FIELD_WIDTH);
		eTelephoneField.setText("Test");

		eName = new JLabel("Employee Name");
		eNameField = new JTextField(FIELD_WIDTH);
		eNameField.setText("Test");

		eYears = new JLabel("Years of Work");
		eYearsField = new JTextField(FIELD_WIDTH);
		eYearsField.setText("Test");

	}

	private void createButton() {

		buttonPrevious = new JButton("<< Previous");
		buttonNext = new JButton(">> Next");
		buttonDisplayAll = new JButton("Display All");
		buttonExit = new JButton("Exit");

	}

	private void createPanel() {

		JPanel panel = new JPanel();
		panel.setLayout(new GridLayout(2, 1));

		JPanel currentRecordPanel = new JPanel();
		currentRecordPanel.setBorder(new TitledBorder(new EtchedBorder(), "Current Records"));
		currentRecordPanel.setLayout(new FlowLayout());
		currentRecordPanel.add(eId);
		currentRecordPanel.add(eIdField);

		JScrollPane scrollPane = new JScrollPane(employeeRecords);
		scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

		JPanel allRecordPanel = new JPanel();
		allRecordPanel.setBorder(new TitledBorder(new EtchedBorder(), "All Records"));
		allRecordPanel.add(scrollPane);

		/*JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout(new FlowLayout());
		buttonPanel.add(buttonPrevious);
		buttonPanel.add(buttonNext);
		buttonPanel.add(buttonDisplayAll);
		buttonPanel.add(buttonExit);*/

		panel.add(currentRecordPanel);
		panel.add(allRecordPanel);
		//panel.add(buttonPanel);

		add(panel);

	}

}