de.schlichtherle.io.swing.JFileChooser Maven / Gradle / Ivy

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TrueZIP is a Java based Virtual File System (VFS) to enable transparent, multi-threaded read/write access to archive files (ZIP, TAR etc.) as if they were directories. Archive files may be arbitrarily nested and the nesting level is only limited by heap and file system size.

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/*
 * Copyright (C) 2005-2010 Schlichtherle IT Services
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.schlichtherle.io.swing;

import de.schlichtherle.io.*;

import java.awt.*;
import java.io.*;

import javax.swing.*;

/**
 * A custom {@code JFileChooser} which supports browsing archive files
 * like (virtual) directories.
 *
 * @author Christian Schlichtherle
 * @version $Id: JFileChooser.java,v 1.4 2010/08/20 13:09:46 christian_schlichtherle Exp $
 */
public class JFileChooser extends javax.swing.JFileChooser {

    private transient volatile short paintingDisabled; // = false;

    public JFileChooser() {
        super(FileSystemView.getFileSystemView());
        super.setFileView(new FileView(super.getFileView()));
        super.setDoubleBuffered(false);
    }

    public JFileChooser(ArchiveDetector archiveDetector) {
        super(FileSystemView.getFileSystemView(archiveDetector));
        super.setFileView(new FileView(super.getFileView()));
        super.setDoubleBuffered(false);
    }

    /**
     * Returns a {@link de.schlichtherle.io.File de.schlichtherle.io.File}
     * instead of {@link java.io.File java.io.File}.
     *
     * @see javax.swing.JFileChooser#getSelectedFile()
     */
    public java.io.File getSelectedFile() {
        java.io.File file = super.getSelectedFile();
        return ((FileSystemView) getFileSystemView()).wrap(file);
    }

    /**
     * Returns an array of
     * {@link de.schlichtherle.io.File de.schlichtherle.io.File}
     * objects instead of {@link java.io.File java.io.File} objects.
     *
     * @see javax.swing.JFileChooser#getSelectedFiles()
     */
    public java.io.File[] getSelectedFiles() {
        java.io.File files[] = super.getSelectedFiles();
        if (files != null) {
            FileSystemView fsv = (FileSystemView) getFileSystemView();
            for (int i = files.length; --i >= 0; ) {
                files[i] = fsv.wrap(files[i]);
                //files[i] = files[i] != null ? new File(files[i]) : null;
            }
        }
        return files;
    }

    public Icon getIcon(final java.io.File file) {
        beginPaintingDisabled();
        try {
            return super.getIcon(file);
        } finally {
            endPaintingDisabled();
        }
    }

    public String getTypeDescription(final java.io.File file) {
        beginPaintingDisabled();
        try {
            return super.getTypeDescription(file);
        } finally {
            endPaintingDisabled();
        }
    }

    public boolean isTraversable(final java.io.File file) {
        beginPaintingDisabled();
        try {
            return super.isTraversable(file);
        } finally {
            endPaintingDisabled();
        }
    }

    public void paint(final Graphics g) {
        if (paintingDisabled > 0) {
            /*EventQueue.invokeLater(new Runnable() {
                public void run() {
                    JFileChooser.super.paint(g);
                }
            });*/
        } else {
            beginPaintingDisabled();
            try {
                super.paintChildren(g);
            } finally {
                endPaintingDisabled();
            }
        }
    }

    private synchronized void beginPaintingDisabled() {
        paintingDisabled++;
    }

    private synchronized void endPaintingDisabled() {
        paintingDisabled--;
        if (paintingDisabled <= 0)
            repaint();
    }
}