/*
 * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * 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 net.java.sip.communicator.plugin.desktoputil;

import java.io.*;

/**
 * The purpose of this interface is to provide an unique way to access to the
 * methods of JFileChooser (javax.swing) or FileDialog (java.awt).
 *
 * It's interesting to use FileDialog under Mac OS X because it uses the native
 * user interface for file selection provided by Mac OS which is more practical
 * than the user interface performed by a JFileChooser (on Mac).
 *
 * Therefore, under other platforms (Microsoft Windows, Linux), the use of
 * JFileChooser instead of FileDialog performs a better user interface for
 * browsing among a file hierarchy.
 *
 * @author Valentin Martinet
 */
public interface SipCommFileChooser
{

    /**
     * Allows to request a 'load file' dialog (optional)
     */
    public static int LOAD_FILE_OPERATION = 0;

    /**
     * Allows to request a 'save file' dialog (optional)
     */
    public static int SAVE_FILE_OPERATION = 1;

    /**
     * Instruction to display only files.
     */
    public static final int FILES_ONLY = 0;

    /**
     * Instruction to display only directories in
     * file chooser dialog.
     */
    public static final int DIRECTORIES_ONLY = 1;

    /**
     * Change the selection mode for the file choose.
     * Possible values are DIRECTORIES_ONLY or FILES_ONLY, default is
     * FILES_ONLY.
     *
     * @param mode the mode to use.
     */
    public void setSelectionMode(int mode);

    /**
     * Returns the selected file by the user from the dialog.
     *
     * @return File the selected file from the dialog
     */
    public File getApprovedFile();

    /**
     * Sets the default path to be considered for browsing among files.
     *
     * @param path the default start path for this dialog
     */
    public void setStartPath(String path);

    /**
     * Shows the dialog and returns the selected file.
     *
     * @return File the selected file in this dialog
     */
    public File getFileFromDialog();

    /**
     * Adds a file filter to this dialog.
     *
     * @param filter the filter to add
     */
    public void addFilter(SipCommFileFilter filter);

    /**
     * Sets a file filter to this dialog.
     *
     * @param filter the filter to add
     */
    public void setFileFilter(SipCommFileFilter filter);

    /**
     * Returns the filter the user has chosen for saving a file.
     *
     * @return SipCommFileFilter the used filter when saving a file
     */
    public SipCommFileFilter getUsedFilter();
}