/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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 external XPT loader interface.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corp.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   John Bandhauer <jband@netscape.com>
 *   Alec Flett <alecf@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */


#include "nsISupports.idl"
#include "nsILocalFile.idl"
#include "nsIInputStream.idl"

/**
 * Implement nsIXPTLoaderSink if you want to enumerate the entries in
 * an XPT archive of some kind
 */
[scriptable, uuid(6E48C500-8682-4730-ADD6-7DB693B9E7BA)]
interface nsIXPTLoaderSink : nsISupports {
    
    /**
     * called by the loader for each entry in the archive
     * @param itemName the name of this particular item in the archive
     * @param index the index of the item inthe archive
     * @param stream contains the contents of the xpt file
     */
    void foundEntry(in string itemName,
                    in long index,
                    in nsIInputStream xptData);
};

/**
 * The XPT loader interface: implemented by a loader to grab an input
 * stream which will be consumed by the interface loader.
 */
[scriptable, uuid(368A15D9-17A9-4c2b-AC3D-A35B3A22B876)]
interface nsIXPTLoader : nsISupports {
    /**
     * enumerate entries in the given archive
     * for each entry found, the loader will call the sink's
     * foundEntry() method with the appropriate information and a
     * stream that the consumer can read from
     * @param file the file to read from
     * @param sink an object which will be called with each file found
     *             in the file
     */
    void enumerateEntries(in nsILocalFile file,
                          in nsIXPTLoaderSink sink );

    /**
     * Load a specific entry from the archive
     * @param file the file to read from
     * @param name the name of the xpt within the file
     * @return an input stream that will read the raw xpt data from
     *         the file
     */
    nsIInputStream loadEntry(in nsILocalFile file,
                             in string name);
};


%{C++

// the first part of the contractID for any loader
// append the type of loader that you need, such as "zip"
#define NS_XPTLOADER_CONTRACTID_PREFIX \
   "@mozilla.org/xptinfo/loader;1&type="

%}