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27 
28 #ifndef INCLUDED_SLIDESHOW_DISPOSABLE_HXX
29 #define INCLUDED_SLIDESHOW_DISPOSABLE_HXX
30 
31 #include <sal/types.h>
32 #include <boost/shared_ptr.hpp>
33 
34 
35 /* Definition of Disposable interface */
36 
37 namespace slideshow
38 {
39     namespace internal
40     {
41         /** Disposable interface
42 
43         	With ref-counted objects, deleting object networks
44         	containing cycles requires a dispose() call, to enforce
45         	every object to call dispose on and release local
46         	references.
47          */
48         class Disposable
49         {
50         public:
51             virtual ~Disposable() {}
52 
53             /** Dispose all object references.
54 
55             	An implementor of this method must first call
56             	dispose() on any of its external references, and
57             	release them after that.
58              */
59             virtual void dispose() = 0;
60         };
61 
62     }
63 }
64 
65 #endif /* INCLUDED_SLIDESHOW_DISPOSABLE_HXX */
66