org.jpedal.examples.viewer.utils.FileFilterer Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
     This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


 *
 * ---------------
 * FileFilterer.java
 * ---------------
 */
package org.jpedal.examples.viewer.utils;

import java.io.File;

/**
 * Used in GUI example code
 * Provides filters for save dialogs
 * 
 * (based on p362 in Oreilly swing)
 */
public class FileFilterer extends javax.swing.filechooser.FileFilter {

    final String[] extensions;
    String description;

    //number off possible values
    final int items;

    //setup file and descriptor
    public FileFilterer(final String[] ext, final String desc) {
        items = ext.length;

        //setup as lower case list
        extensions = new String[items];
        for (int i = 0; i < items; i++) {
            extensions[i] = ext[i].toLowerCase();

            //and add a description
            description = desc;
        }
    }

    @Override
    public final String getDescription() {
        return description;
    }

    @Override
    public final boolean accept(final File f) {
        boolean accept_flag = false;

        //allow directories
        if (f.isDirectory()) {
            accept_flag = true;
        } else {
            //check file against list
            final String file_name = f.getName().toLowerCase();
            for (int i = 0; i < items; i++) {
                if (file_name.endsWith(extensions[i])) {
                    accept_flag = true;
                }
            }
        }
        return accept_flag;
    }
}