package demo;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;

/**
 * Creates the JFrame to house the GUI.
 * 
 * @author uphusar. Created Oct 1, 2011.
 */
public class GUI extends JFrame implements ActionListener {

	// GUI Fields
	private TextArea textArea = new TextArea();
	private JMenuBar menuBar = new JMenuBar();
	private JMenu file = new JMenu(" File");
	private JMenuItem blank = new JMenuItem(" New");
	private JMenuItem open = new JMenuItem(" Open");
	private JMenuItem save = new JMenuItem(" Save");
	private JMenuItem exit = new JMenuItem(" Exit");

	private FileIO fileIO;

	/**
	 * Constructs the GUI for File I/O Demo.
	 * 
	 */
	public GUI() {
		// JFrame's Properties
		this.setTitle("Java Notepad");
		this.setSize(new Dimension(1000, 800));
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setLocationRelativeTo(null);

		// JMenu Bar's Components
		this.menuBar.add(this.file);
		this.file.setMnemonic(KeyEvent.VK_F);

		// File Menu Components
		Dimension menuItem = new Dimension(100, 25);
		this.file.add(this.blank);
		this.file.add(this.save);
		this.file.add(this.open);
		this.file.addSeparator();
		this.file.add(this.exit);
		this.blank.setMnemonic(KeyEvent.VK_N);
		this.save.setMnemonic(KeyEvent.VK_S);
		this.open.setMnemonic(KeyEvent.VK_P);
		this.exit.setMnemonic(KeyEvent.VK_E);
		this.blank.setPreferredSize(menuItem);
		this.save.setPreferredSize(menuItem);
		this.open.setPreferredSize(menuItem);
		this.exit.setPreferredSize(menuItem);
		this.blank.addActionListener(this);
		this.save.addActionListener(this);
		this.open.addActionListener(this);
		this.exit.addActionListener(this);

		// JFrame's Components
		this.textArea.setFont(new Font("Times New Roman", 0, 14));
		this.add(this.menuBar, BorderLayout.NORTH);
		this.add(this.textArea, BorderLayout.CENTER);
		this.setVisible(true);

		this.fileIO = new FileIO(this, this.textArea);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		if (e.getSource() == this.blank) {
			this.textArea.setText("");
		} else if (e.getSource() == this.save) {
			this.fileIO.save();
		} else if (e.getSource() == this.open) {
			this.fileIO.open();
		} else if (e.getSource() == this.exit) {
			this.dispose();
		}

	}
}