ApesFile.java

package apes.lib;

import java.io.File;

import javax.swing.JFileChooser;

import apes.exceptions.UnidentifiedLanguageException;
import apes.interfaces.AudioFormatPlugin;
import apes.models.InternalFormat;
import apes.views.ApesError;


/**
 * Create a new object of this class with a file on the system. Then you can get
 * all kinds of information and other objects.
 * 
 * @author Johan Andersson (johandy@student.chalmers.se)
 */
public class ApesFile
{
  /**
   * The file.
   */
  private File file;

  /**
   * Creates a new <code>ApesFile</code> instance.
   * 
   * @param fileName The filename of the file.
   */
  public ApesFile(String fileName)
  {
    this(new File(System.getProperty("user.dir") + File.separator + fileName));
  }

  /**
   * Creates a new <code>ApesFile</code> instance.
   * 
   * @param file The file.
   */
  public ApesFile(File file)
  {
    this.file = file;
  }

  /**
   * Returns the name of the file.
   * 
   * @return The file name.
   */
  public String getName()
  {
    return file.getName();
  }

  /**
   * Returns the name of the parent directory.
   * 
   * @return The name of the parent directory.
   */
  public String getParent()
  {
    return file.getParent();
  }

  /**
   * Returns the file.
   * 
   * @return The file.
   */
  public File getFile()
  {
    return file;
  }

  /**
   * Creates new internal format from the file.
   * 
   * @return A new internal format.
   * @exception Exception Is something went wrong in creating the internal
   *              format.
   */
  public InternalFormat getInternalFormat() throws Exception
  {
    AudioFormatPlugin audioFile = new ApesFormat(file).getAudioFile();

    return audioFile.importFile(getParent(), getName());
  }

  /**
   * Opens a file with a graphical interface.
   * 
   * @return An <code>ApesFile</code> for the selected file, or null of no file
   *         was selected.
   */
  public static ApesFile open()
  {
    try
    {
      // Chose file.
      JFileChooser fileChooser = new JFileChooser();
      fileChooser.setCurrentDirectory(new File("."));
      int returnVal = fileChooser.showOpenDialog(null);

      if(returnVal == JFileChooser.APPROVE_OPTION)
      {
        File file = fileChooser.getSelectedFile();

        return new ApesFile(file);
      }
    }
    catch(UnidentifiedLanguageException e)
    {
      ApesError.unsupportedFormat();
    }
    catch(Exception e)
    {
      e.printStackTrace();
    }

    return null;
  }
}