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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