package demo;

import java.awt.TextArea;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

import javax.swing.JFileChooser;
import javax.swing.JFrame;

/**
 * Class that will handle the File Input and Output for the Program.
 * 
 * @author uphusar. Created Oct 1, 2011.
 */
public class FileIO {

	private JFrame frame;
	private TextArea textArea;
	private JFileChooser fc;

	/**
	 * Constructs a handler for File I/O.
	 * 
	 * @param frame
	 * @param textArea
	 */
	public FileIO(JFrame frame, TextArea textArea) {
		this.frame = frame;
		this.textArea = textArea;
		this.fc = new JFileChooser();
	}

	/**
	 * Saves the text in the TextArea to a text file.
	 * 
	 */
	protected void save() {
		int returnValue = this.fc.showSaveDialog(this.frame);
		if (returnValue == 0) {
			try {
				PrintWriter pw = new PrintWriter(this.fc.getSelectedFile());
				pw.write(this.textArea.getText());
				pw.close();
			} catch (FileNotFoundException exception) {
				// Do Nothing
			}
		}
	}

	/**
	 * Opens a text file and displays it in the TextArea.
	 * 
	 * @throws FileNotFoundException
	 * 
	 */
	protected void open() {
		int returnValue = this.fc.showOpenDialog(this.frame);
		try {
			if (returnValue == 0) {
				Scanner in = new Scanner(this.fc.getSelectedFile());
				while (in.hasNextLine()) {
					this.textArea.append(in.nextLine());
					if (in.hasNextLine()) {
						this.textArea.append("\n");
					}
				}
				in.close();
			}
		} catch (FileNotFoundException exception) {
			// TODO Auto-generated catch-block stub.
			exception.printStackTrace();
		}
	}

}