/*
 * Lostmazed
 *
 * Copyright 2011 Matúš Sulír.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package lostmazed.editor;

import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;

/**
 * Shows a dialog to open a PNG image file.
 * @author Matúš Sulír
 */
public class ImageDialog extends JFileChooser {
    /**
     * Constructs the image dialog.
     */
    public ImageDialog() {
        setFileFilter(new PNGFilter());
    }
    
    /**
     * The filter used to show only PNG files.
     */
    private class PNGFilter extends FileFilter {
        /**
         * Returns the if the file matches the filter (*.png and directories).
         * @param file the file object
         * @return true if the file matches the filter, false otherwise
         */
        @Override
        public boolean accept(File file) {
            return file.getName().toLowerCase().endsWith(".png") || file.isDirectory();
        }

        /**
         * Returns the textual filter description for the user.
         * @return the textual description
         */
        @Override
        public String getDescription() {
            return "PNG images (*.png)";
        }
    }
}
