1
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2
/* ***** BEGIN LICENSE BLOCK *****
3
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
5
* The contents of this file are subject to the Mozilla Public License Version
6
* 1.1 (the "License"); you may not use this file except in compliance with
7
* the License. You may obtain a copy of the License at
8
* http://www.mozilla.org/MPL/
10
* Software distributed under the License is distributed on an "AS IS" basis,
11
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12
* for the specific language governing rights and limitations under the
15
* The Original Code is nsStubDocumentObserver.
17
* The Initial Developer of the Original Code is the Mozilla Foundation.
18
* Portions created by the Initial Developer are Copyright (C) 2004
19
* the Initial Developer. All Rights Reserved.
22
* L. David Baron <dbaron@dbaron.org> (original author)
24
* Alternatively, the contents of this file may be used under the terms of
25
* either the GNU General Public License Version 2 or later (the "GPL"), or
26
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27
* in which case the provisions of the GPL or the LGPL are applicable instead
28
* of those above. If you wish to allow use of your version of this file only
29
* under the terms of either the GPL or the LGPL, and not to allow others to
30
* use your version of this file under the terms of the MPL, indicate your
31
* decision by deleting the provisions above and replace them with the notice
32
* and other provisions required by the GPL or the LGPL. If you do not delete
33
* the provisions above, a recipient may use your version of this file under
34
* the terms of any one of the MPL, the GPL or the LGPL.
36
* ***** END LICENSE BLOCK ***** */
37
#ifndef nsStubDocumentObserver_h_
38
#define nsStubDocumentObserver_h_
40
#include "nsIDocumentObserver.h"
43
* nsStubDocumentObserver is an implementation of the
44
* nsIDocumentObserver interface (except for the methods on nsISupports)
45
* that is intended to be used within the content/layout library. All
48
* There are two advantages to inheriting from nsStubDocumentObserver
49
* rather than directly from nsIDocumentObserver:
50
* 1. smaller compiled code size (since there's no need for the code
51
* for the empty virtual function implementations for every
52
* nsIDocumentObserver implementation)
53
* 2. the performance of document's loop over observers benefits from
54
* the fact that more of the functions called are the same (which
55
* can reduce instruction cache misses and perhaps improve branch
58
class nsStubDocumentObserver : public nsIDocumentObserver {
59
NS_DECL_NSIDOCUMENTOBSERVER
62
#endif /* !defined(nsStubDocumentObserver_h_) */