1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _SDR_OBJECTUSER_HXX 25 #define _SDR_OBJECTUSER_HXX 26 27 #include <vector> 28 29 //////////////////////////////////////////////////////////////////////////////////////////////////// 30 // predeclarations 31 class SdrObject; 32 33 //////////////////////////////////////////////////////////////////////////////////////////////////// 34 // To make things more safe, allow users of the page to register at it. The users need to be derived 35 // from sdr::PageUser to get a call. The users do not need to call RemovePageUser() at the page 36 // when they get called from PageInDestruction(). 37 38 namespace sdr 39 { 40 class ObjectUser 41 { 42 public: 43 // this method is called form the destructor of the referenced page. 44 // do all necessary action to forget the page. It is not necessary to call 45 // RemovePageUser(), that is done form the destructor. 46 virtual void ObjectInDestruction(const SdrObject& rObject) = 0; 47 }; 48 49 // typedef for ObjectUserVector 50 typedef ::std::vector< ObjectUser* > ObjectUserVector; 51 } // end of namespace sdr 52 53 //////////////////////////////////////////////////////////////////////////////////////////////////// 54 55 #endif //_SDR_OBJECTUSER_HXX 56 // eof 57