INTERFACE GRAPHIQUE DE CHOIX DE FICHIER - COMPOSANT SWING SUR ÉTAGÈRE

/*******************************************************************************
*      FileChooser class -> ok
*
* This class creates a FileChoser in a JPanel. This class returns file selection
*	parameters.
*
* ***** Fields:
* - JButton openButton; -> button to open the selected file
* - JFileChooser fc; -> JFileChooser used to open files
* - String choosedFile; -> choosed file field
* - JTextField selectedDirectory;-> selected directory text field
*
* ***** Methods:
* + String getSelectedFile() -> return the selected file
* + void actionPerformed(ActionEvent e) -> event processing
*
* ***** Developper informations
* Developper : Onfroy Brice
* Date : 06/20/2006
* E-Mail : lambdacrash@gmail.com
*******************************************************************************/
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.filechooser.*;

public class FileChooser extends JPanel implements ActionListener 
{
/*******************************************************************************
*		Fields
*******************************************************************************/
	private JButton openButton; // button to open the selected file
	private JFileChooser fc; //  JFileChooser used to open files
	private String choosedFile; // choosed file field
	private JTextField selectedDirectory; // selected directory text field
	private LangFileParser lang; // used to support multi language 

/*******************************************************************************
*		Constructor with boolean border parameter
*******************************************************************************/
	public FileChooser(boolean border)
	{		
		// Set the JPanel layout manager
		setLayout(new BorderLayout());

		// Create a JPanel which contains buttons
		JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));

		// Set the JPanel border if border==true
		if(border)
			buttonPanel.setBorder(BorderFactory.createTitledBorder("Ouvrir")));

		// Create the selected directory text field
		selectedDirectory = new JTextField(System.getProperty("user.home"), 35);

		// Create the file chooser open button
		openButton = new JButton(lang.getValue(this.getClass().getName(), "openButton"));
		openButton.addActionListener(this);
		
		// Add elements into the buttonPanel 
		buttonPanel.add(selectedDirectory);
		buttonPanel.add(openButton);

		// Add the buttonPanel into the parent JPanel
		add(buttonPanel, BorderLayout.NORTH);
	}

/*******************************************************************************
*		Event processing
*******************************************************************************/
	public void actionPerformed(ActionEvent e) 
	{
		if (e.getSource() == openButton) 
		{
			fc = new JFileChooser(selectedDirectory.getText());
			fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
			int returnVal = fc.showOpenDialog(FileChooser.this);
			if (returnVal == JFileChooser.APPROVE_OPTION) 
			{
				choosedFile = fc.getSelectedFile().getPath();
				selectedDirectory.setText(choosedFile);
			} 
		}
	}

/*******************************************************************************
*		Method
*******************************************************************************/
	// Retun the selected file 
	public String getSelectedFile()
	{
		return choosedFile;
	}
}