ersa::events::Subscription Struct Reference

#include <event_bus.h>

Collaboration diagram for ersa::events::Subscription:

Public Attributes
SubscriptionId	id {0}
EventType	type {EventType::None}
EventCallback	callback {nullptr}
IEventListener *	listener {nullptr}
void *	userData {nullptr}
bool	active {false}

Detailed Description

One bounded EventBus registration. Callback and listener pointers are non-owning: the subscriber must unregister before its target is destroyed.

Member Data Documentation

active

bool ersa::events::Subscription::active {false}

False means the fixed slot is unused and may be recycled.

callback

EventCallback ersa::events::Subscription::callback {nullptr}

Optional C callback used instead of the listener interface.

id

SubscriptionId ersa::events::Subscription::id {0}

Handle returned to callers and used for unsubscribe().

listener

IEventListener* ersa::events::Subscription::listener {nullptr}

Optional object listener used instead of the C callback.

type

EventType ersa::events::Subscription::type {EventType::None}

Event filter; None matches every event type.

userData

void* ersa::events::Subscription::userData {nullptr}

Caller context passed back unchanged to callback.

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The documentation for this struct was generated from the following file:

• include/ersa/events/event_bus.h