Extension file filter

gistfile1.java

import java.io.File;
import java.util.Vector;

/**
 * Filter on the extension of the files.
 * @author sprohaszka
 *
 */
public class FileExtFilter extends javax.swing.filechooser.FileFilter {

	private static final String SEPARATOR = ";";
	private static final String EXT_SEPARATOR = ".";
	
	private final String sFilterDescription = "Fichiers autorisés";
	private Vector<String> _tExt = new Vector<String>();
	
	/**
	 * Filter on the extension of the file.
	 * The parameter has to be like : ".doc;.jpg". No wildcards.
	 * @param sExtensions List of extensions on which the filter will applied
	 */
	public FileExtFilter(String sExtensions) {
		String[] tExt = sExtensions.split(SEPARATOR);
		for(String sExt : tExt) {
			_tExt.add(sExt);
		}
	}
	
	/**
	 * Filter on the extension of the file.
	 * The parameter has to be like : ".doc;.jpg". No wildcards.
	 * @param sExtensions List of extensions on which the filter will applied
	 * @param sDescription Name to display in the filechooser combobox
	 */
	public FileExtFilter(String sExtensions, String sDescription) {
		String[] tExt = sExtensions.split(SEPARATOR);
		for(String sExt : tExt) {
			_tExt.add(sExt);
		}
	}

	@Override
	public boolean accept(File f) {
		boolean bAcceted = false;
		
		// If the file is a directory, we don't filter it (otherwise it's impossible to navigate).
		if(f.isDirectory() == false) {
			String sFileName = f.getName();
			int iIdxExt = sFileName.lastIndexOf(EXT_SEPARATOR);
			
			// If the file has no extension, we don't want to see it
			if(iIdxExt > 0) {
				String sExt = sFileName.substring(iIdxExt);
				
				if(_tExt.contains(sExt) == true) {
					bAcceted = true;
				}
			}
		} else {
			bAcceted = true;
		}
		
		return bAcceted;
	}

	@Override
	public String getDescription() {
		return sFilterDescription;
	}

}