/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* * nsStubDocumentObserver is an implementation of the nsIDocumentObserver * interface (except for the methods on nsISupports) that is intended to be * used as a base class within the content/layout library. All methods do * nothing.
*/
/** * There are two advantages to inheriting from nsStubDocumentObserver * rather than directly from nsIDocumentObserver: * 1. smaller compiled code size (since there's no need for the code * for the empty virtual function implementations for every * nsIDocumentObserver implementation) * 2. the performance of document's loop over observers benefits from * the fact that more of the functions called are the same (which * can reduce instruction cache misses and perhaps improve branch * prediction)
*/ class nsStubDocumentObserver : public nsIDocumentObserver { public:
NS_DECL_NSIDOCUMENTOBSERVER
};
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