/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (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.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Mozilla browser.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation. Portions created by Netscape are
 * Copyright (C) 1999 Netscape Communications Corporation. All
 * Rights Reserved.
 * 
 * Contributor(s): 
 *   Stuart Parmenter <pavlov@netscape.com>
 */

#include "nsISupports.idl"

interface nsILocalFile;
interface nsIFileURL;
interface nsIDOMWindow;
interface nsISimpleEnumerator;

[scriptable, uuid(80faf095-c807-4558-a2cc-185ed70754ea)]
interface nsIFilePicker : nsISupports
{
  const short modeOpen        = 0;              // Load a file or directory
  const short modeSave        = 1;              // Save a file or directory
  const short modeGetFolder   = 2;              // Select a folder/directory
  const short modeOpenMultiple= 3;              // Load multiple files

  const short returnOK        = 0;              // User hit Ok, process selection
  const short returnCancel    = 1;              // User hit cancel, ignore selection
  const short returnReplace   = 2;              // User acknowledged file already exists so ok to replace, process selection

  const long filterAll        = 0x01;           // *.*
  const long filterHTML       = 0x02;           // *.html; *.htm
  const long filterText       = 0x04;           // *.txt
  const long filterImages     = 0x08;           // *.png; *.gif; *.jpg; *.jpeg
  const long filterXML        = 0x10;           // *.xml
  const long filterXUL        = 0x20;           // *.xul
  const long filterApps       = 0x40;           // Applications (per-platform implementation)

 /**
  * Initialize the file widget.
  *
  * @param      parent   nsIDOMWindow parent.  This dialog will be dependent
  *                      on this parent. parent must be non-null.
  * @param      title    The title for the file widget
  * @param      mode     load, save, or get folder
  *
  */
  void init(in nsIDOMWindow parent, in AString title, in short mode);

 /**
  * Append to the  filter list with things from the predefined list
  *
  * @param      filters  mask of filters i.e. (filterAll | filterHTML)
  *
  */
  void appendFilters(in long filterMask);

 /**
  * Add a filter
  *
  * @param      title    name of the filter
  * @param      filter   extensions to filter -- semicolon and space separated
  *
  */
  void appendFilter(in AString title,
                    in AString filter);

 /**
  * The filename that should be suggested to the user as a default.
  *
  * @throws NS_ERROR_FAILURE on attempts to get
  */
  attribute AString defaultString;

 /**
  * The extension that should be associated with files of the type we
  * want to work with.  On some platforms, this extension will be
  * automatically appended to filenames the user enters, if needed.  
  */
  attribute AString defaultExtension;
  
 /**
  * The filter which is currently selected in the File Picker dialog
  *
  * @return Returns the index (0 based) of the selected filter in the filter list. 
  */
  attribute long filterIndex;

 /**
  * Set the directory that the file open/save dialog initially displays
  *
  * @param      displayDirectory  the name of the directory
  *
  */
  attribute nsILocalFile displayDirectory;


 /**
  * Get the nsILocalFile for the file or directory.
  *
  * @return Returns the file currently selected
  */
  readonly attribute nsILocalFile file;

 /**
  * Get the nsIFileURL for the file or directory.
  *
  * @return Returns the file currently selected
  */
  readonly attribute nsIFileURL fileURL;

 /**
  * Get the enumerator for the selected files
  * only works in the modeOpenMultiple mode
  *
  * @return Returns the files currently selected
  */
  readonly attribute nsISimpleEnumerator files;

 /**
  * Show File Dialog. The dialog is displayed modally.
  *
  * @return returnOK if the user selects OK, returnCancel if the user selects cancel
  *
  */
  short show();
};
