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Functions of class **afb_event**
==============================
## General functions
### afb_event_is_valid
```C
/**
* Checks whether the 'event' is valid or not.
*
* @param event the event to check
*
* @return 0 if not valid or 1 if valid.
*/
int afb_event_is_valid(
afb_event_t event);
```
### afb_event_name
```C
/**
* Gets the name associated to 'event'.
*
* @param event the event whose name is requested
*
* @return the name of the event
*
* The returned name can be used until call to 'afb_event_unref'.
* It shouldn't be freed.
*/
const char *afb_event_name(
afb_event_t event);
```
### afb_event_unref
```C
/**
* Decrease the count of references to 'event'.
* Call this function when the evenid is no more used.
* It destroys the event_x2 when the reference count falls to zero.
*
* @param event the event
*/
void afb_event_unref(
afb_event_t event);
```
### afb_event_addref
```C
/**
* Increases the count of references to 'event'
*
* @param event the event
*
* @return the event
*/
afb_event_t *afb_event_addref(
afb_event_t event);
```
## Pushing functions
### afb_event_broadcast
```C
/**
* Broadcasts widely an event of 'event' with the data 'object'.
* 'object' can be NULL.
*
* For convenience, the function calls 'json_object_put' for 'object'.
* Thus, in the case where 'object' should remain available after
* the function returns, the function 'json_object_get' shall be used.
*
* @param event the event to broadcast
* @param object the companion object to associate to the broadcasted event (can be NULL)
*
* @return 0 in case of success or -1 in case of error
*/
int afb_event_broadcast(
afb_event_t event,
struct json_object *object);
```
### afb_event_push
```C
/**
* Pushes an event of 'event' with the data 'object' to its observers.
* 'object' can be NULL.
*
* For convenience, the function calls 'json_object_put' for 'object'.
* Thus, in the case where 'object' should remain available after
* the function returns, the function 'json_object_get' shall be used.
*
* @param event the event to push
* @param object the companion object to associate to the pushed event (can be NULL)
*
* @Return
* * 1 if at least one client listen for the event
* * 0 if no more client listen for the event
* * -1 in case of error (the event can't be delivered)
*/
int afb_event_push(
afb_event_t event,
struct json_object *object);
```
|
