include/svx/sdrobjectuser.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_SVX_SDROBJECTUSER_HXX
  21 #define INCLUDED_SVX_SDROBJECTUSER_HXX
  22
  23 #include <vector>
  24
  25 class SdrObject;
  26
  27 // To make things more safe, allow users of an object to register at it. The users need to be derived
  28 // from sdr::ObjectUser to get a call. The users do not need to call RemoveObjectUser() at the page
  29 // when they get called from ObjectInDestruction().
  30
  31 namespace sdr
  32 {
  33     class ObjectUser
  34     {
  35     public:
  36         // this method is called from the destructor of the referenced page.
  37         // do all necessary action to forget the page. It is not necessary to call
  38         // RemovePageUser(), that is done from the destructor.
  39         virtual void ObjectInDestruction(const SdrObject& rObject) = 0;
  40
  41     protected:
  42         ~ObjectUser() {}
  43     };
  44
  45     // typedef for ObjectUserVector
  46     typedef ::std::vector< ObjectUser* > ObjectUserVector;
  47 } // end of namespace sdr
  48
  49 #endif // INCLUDED_SVX_SDROBJECTUSER_HXX
  50
  51 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */