LCOV - code coverage report
Current view: directory - objdir/dist/include - nsStubImageDecoderObserver.h (source / functions) Found Hit Coverage
Test: app.info Lines: 1 0 0.0 %
Date: 2012-06-02 Functions: 1 0 0.0 %

       1                 : /* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       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/
       9                 :  *
      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
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is nsStubDocumentObserver.
      16                 :  *
      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.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
      23                 :  *
      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.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : /*
      39                 :  * nsStubImageDecoderObserver is an implementation of the imgIDecoderObserver
      40                 :  * interface (except for the methods on nsISupports) that is intended to be
      41                 :  * used as a base class within the content/layout library.  All methods do
      42                 :  * nothing.
      43                 :  */
      44                 : 
      45                 : #ifndef nsStubImageDecoderObserver_h_
      46                 : #define nsStubImageDecoderObserver_h_
      47                 : 
      48                 : #include "imgIDecoderObserver.h"
      49                 : 
      50                 : /**
      51                 :  * There are two advantages to inheriting from nsStubImageDecoderObserver
      52                 :  * rather than directly from imgIDecoderObserver:
      53                 :  *  1. smaller compiled code size (since there's no need for the code
      54                 :  *     for the empty virtual function implementations for every
      55                 :  *     imgIDecoderObserver implementation)
      56                 :  *  2. the performance of document's loop over observers benefits from
      57                 :  *     the fact that more of the functions called are the same (which
      58                 :  *     can reduce instruction cache misses and perhaps improve branch
      59                 :  *     prediction)
      60                 :  */
      61               0 : class nsStubImageDecoderObserver : public imgIDecoderObserver {
      62                 : public:
      63                 :     NS_DECL_IMGICONTAINEROBSERVER
      64                 :     NS_DECL_IMGIDECODEROBSERVER
      65                 : };
      66                 : 
      67                 : #endif /* !defined(nsStubImageDecoderObserver_h_) */

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