1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski  *
3*b1cdbd2cSJim Jagielski  * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski  * or more contributor license agreements.  See the NOTICE file
5*b1cdbd2cSJim Jagielski  * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski  * regarding copyright ownership.  The ASF licenses this file
7*b1cdbd2cSJim Jagielski  * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski  * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski  * with the License.  You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski  *
11*b1cdbd2cSJim Jagielski  *   http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski  *
13*b1cdbd2cSJim Jagielski  * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski  * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski  * KIND, either express or implied.  See the License for the
17*b1cdbd2cSJim Jagielski  * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski  * under the License.
19*b1cdbd2cSJim Jagielski  *
20*b1cdbd2cSJim Jagielski  *************************************************************/
21*b1cdbd2cSJim Jagielski 
22*b1cdbd2cSJim Jagielski 
23*b1cdbd2cSJim Jagielski 
24*b1cdbd2cSJim Jagielski #ifndef INCLUDED_SLIDESHOW_DISPOSABLE_HXX
25*b1cdbd2cSJim Jagielski #define INCLUDED_SLIDESHOW_DISPOSABLE_HXX
26*b1cdbd2cSJim Jagielski 
27*b1cdbd2cSJim Jagielski #include <sal/types.h>
28*b1cdbd2cSJim Jagielski #include <boost/shared_ptr.hpp>
29*b1cdbd2cSJim Jagielski 
30*b1cdbd2cSJim Jagielski 
31*b1cdbd2cSJim Jagielski /* Definition of Disposable interface */
32*b1cdbd2cSJim Jagielski 
33*b1cdbd2cSJim Jagielski namespace slideshow
34*b1cdbd2cSJim Jagielski {
35*b1cdbd2cSJim Jagielski     namespace internal
36*b1cdbd2cSJim Jagielski     {
37*b1cdbd2cSJim Jagielski         /** Disposable interface
38*b1cdbd2cSJim Jagielski 
39*b1cdbd2cSJim Jagielski         	With ref-counted objects, deleting object networks
40*b1cdbd2cSJim Jagielski         	containing cycles requires a dispose() call, to enforce
41*b1cdbd2cSJim Jagielski         	every object to call dispose on and release local
42*b1cdbd2cSJim Jagielski         	references.
43*b1cdbd2cSJim Jagielski          */
44*b1cdbd2cSJim Jagielski         class Disposable
45*b1cdbd2cSJim Jagielski         {
46*b1cdbd2cSJim Jagielski         public:
~Disposable()47*b1cdbd2cSJim Jagielski             virtual ~Disposable() {}
48*b1cdbd2cSJim Jagielski 
49*b1cdbd2cSJim Jagielski             /** Dispose all object references.
50*b1cdbd2cSJim Jagielski 
51*b1cdbd2cSJim Jagielski             	An implementor of this method must first call
52*b1cdbd2cSJim Jagielski             	dispose() on any of its external references, and
53*b1cdbd2cSJim Jagielski             	release them after that.
54*b1cdbd2cSJim Jagielski              */
55*b1cdbd2cSJim Jagielski             virtual void dispose() = 0;
56*b1cdbd2cSJim Jagielski         };
57*b1cdbd2cSJim Jagielski 
58*b1cdbd2cSJim Jagielski     }
59*b1cdbd2cSJim Jagielski }
60*b1cdbd2cSJim Jagielski 
61*b1cdbd2cSJim Jagielski #endif /* INCLUDED_SLIDESHOW_DISPOSABLE_HXX */
62