/*
 * Copyright 2010 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package sun.awt.X11;

import java.awt.Dialog;
import java.awt.FileDialog;
import java.awt.peer.FileDialogPeer;
import java.io.File;
import java.io.FilenameFilter;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
import sun.awt.AWTAccessor;

/**
 * FileDialogPeer for the GtkFileChooser.
 * 
 * @author Costantino Cerbo (c.cerbo@gmail.com)
 */
class GtkFileDialogPeer extends XDialogPeer implements FileDialogPeer {

    private FileDialog fd;

    public GtkFileDialogPeer(FileDialog fd) {
        super((Dialog) fd);
        this.fd = fd;
    }

    private native void run(String title, int mode, String dir, String file,
            FilenameFilter filter, boolean isMultipleMode);

    private native void quit();

    /**
     * Called exclusively by the native C code.
     */
    private void setFileInternal(String directory, String[] filenames) {
        AWTAccessor.FileDialogAccessor accessor = AWTAccessor
                .getFileDialogAccessor();

        if (filenames == null) {
            accessor.setDirectory(fd, null);
            accessor.setFile(fd, null);
            accessor.setFiles(fd, null, null);
        } else {
            accessor.setDirectory(fd, directory);
            accessor.setFile(fd, filenames[0]);
            accessor.setFiles(fd, directory, filenames);
        }
    }

    /**
     * Called exclusively by the native C code.
     */
    private boolean filenameFilterCallback(String fullname) {
        if (fd.getFilenameFilter() == null) {
            // no filter, accept all.
            return true;
        }

        File filen = new File(fullname);
        return fd.getFilenameFilter().accept(new File(filen.getParent()),
                filen.getName());
    }

    @Override
    public void setVisible(boolean b) {
        XToolkit.awtLock();
        try {
            if (b) {
                Thread t = new Thread() {
                    public void run() {
                        GtkFileDialogPeer.this.run(fd.getTitle(), fd.getMode(),
                                fd.getDirectory(), fd.getFile(), fd
                                        .getFilenameFilter(), fd
                                        .isMultipleMode());
                        fd.setVisible(false);
                    }
                };
                t.start();
            } else {
                quit();
                fd.setVisible(false);
            }
        } finally {
            XToolkit.awtUnlock();
        }
    }

    @Override
    public void dispose() {
        quit();
        super.dispose();
    }

    @Override
    public void setDirectory(String dir) {
        // We do not implement this method because we
        // have delegated to FileDialog#setDirectory
    }

    @Override
    public void setFile(String file) {
        // We do not implement this method because we
        // have delegated to FileDialog#setFile
    }

    @Override
    public void setFilenameFilter(FilenameFilter filter) {
        // We do not implement this method because we
        // have delegated to FileDialog#setFilenameFilter
    }
}