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 INCLUDED_SLIDESHOW_DISPOSABLE_HXX 25 #define INCLUDED_SLIDESHOW_DISPOSABLE_HXX 26 27 #include <sal/types.h> 28 #include <boost/shared_ptr.hpp> 29 30 31 /* Definition of Disposable interface */ 32 33 namespace slideshow 34 { 35 namespace internal 36 { 37 /** Disposable interface 38 39 With ref-counted objects, deleting object networks 40 containing cycles requires a dispose() call, to enforce 41 every object to call dispose on and release local 42 references. 43 */ 44 class Disposable 45 { 46 public: ~Disposable()47 virtual ~Disposable() {} 48 49 /** Dispose all object references. 50 51 An implementor of this method must first call 52 dispose() on any of its external references, and 53 release them after that. 54 */ 55 virtual void dispose() = 0; 56 }; 57 58 } 59 } 60 61 #endif /* INCLUDED_SLIDESHOW_DISPOSABLE_HXX */ 62