package ie.dcu.swt.event;

import java.io.*;
import java.util.*;

/**
 * A file drop event.
 * 
 * @author Kevin McGuinness
 */
public class FileDropEvent extends EventObject {
	
	/**
	 * Serialization UID.
	 */
	private static final long serialVersionUID = -7379037769871853671L;
	
	/**
	 * The files.
	 */
	private final ArrayList<File> files;

	/**
	 * Create a file drop event.
	 * 
	 * @param source
	 *            The source of the file drop.
	 * @param files
	 *            A list of absolute file paths.
	 */
	public FileDropEvent(Object source, String[] files) {
		super(source);
		this.files = new ArrayList<File>(files.length);
		for (String file : files) {
			this.files.add(new File(file));
		}
	}
	
	/**
	 * Returns an immutable collection of the files for the drop.
	 */
	public Collection<File> files() {
		return Collections.unmodifiableCollection(files);
	}

}