gecko-dev/dom/indexedDB/nsIIDBCursor.idl

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** 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 Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either 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"
interface nsIIDBRequest;
interface nsIVariant;
%{C++
#include "jsapi.h"
%}
/**
* IDBCursor interface. See
* http://dev.w3.org/2006/webapi/WebSimpleDB/#idl-def-IDBCursor for more
* information.
*/
[scriptable, uuid(f0954b7d-b639-49ac-ad4b-b5e072fd0cc5)]
interface nsIIDBCursor : nsISupports
{
const unsigned short NEXT = 0;
const unsigned short NEXT_NO_DUPLICATE = 1;
const unsigned short PREV = 2;
const unsigned short PREV_NO_DUPLICATE = 3;
readonly attribute unsigned short direction;
readonly attribute nsIVariant key;
[implicit_jscontext]
readonly attribute jsval value;
// Returns true always for non-preloaded cursors. Calling continue means that
// the same onsuccess function will be called again with the new key/value
// (or null if no more matches).
//
// For preloaded cursors returns true if key/value have been set to new
// values. If false then no more matches are available and getting the key,
// value property will throw, as will calling update() and remove().
[implicit_jscontext, optional_argc]
boolean continue([optional /* undefined */] in jsval key);
// Success fires IDBTransactionEvent, result == key
[implicit_jscontext]
nsIIDBRequest update(in jsval value);
// Success fires IDBTransactionEvent, result == null
nsIIDBRequest remove();
};