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1 | #ifndef HOOK_H |
2 | #define HOOK_H |
3 | |
4 | #include <glib.h> |
5 | |
6 | /* A hook is a function to call with the supplied hook data, and with |
7 | call site specific data (e.g., hooks for events are called with a |
8 | pointer to the current event). */ |
9 | |
10 | typedef void (*lttv_hook)(void *hook_data, void *call_data); |
11 | |
12 | |
13 | /* A list of hooks allows registering hooks to be called later. */ |
14 | |
15 | typedef GArray _lttv_hooks; |
16 | typedef _lttv_hooks lttv_hooks; |
17 | |
18 | lttv_hooks *lttv_hooks_new(); |
19 | |
20 | void lttv_hooks_destroy(lttv_hooks *h); |
21 | |
22 | void lttv_hooks_add(lttv_hooks *h, lttv_hook f, void *hook_data); |
23 | |
24 | void lttv_hooks_call(lttv_hooks *h, void *call_data); |
25 | |
26 | |
27 | /* Sometimes different hooks need to be called based on the case. The |
28 | case is represented by an unsigned integer id and may represent different |
29 | event types, for instance. */ |
30 | |
31 | typedef GPtrArray _lttv_hooks_by_id; |
32 | typedef _lttv_hooks_by_id lttv_hooks_by_id; |
33 | |
34 | lttv_hooks_by_id *lttv_hooks_by_id_new(); |
35 | |
36 | void lttv_hooks_by_id_destroy(lttv_hooks_by_id *h); |
37 | |
38 | void lttv_hooks_by_id_add(lttv_hooks_by_id *h, lttv_hook f, void *hook_data, |
39 | unsigned int id); |
40 | |
41 | void lttv_hooks_by_id_call(lttv_hooks_by_id *h, void *call_data, unsigned int id); |
42 | |
43 | #endif // HOOK_H |