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#include "EventManager.h"
using namespace crepe;
EventManager & EventManager::get_instance() {
static EventManager instance;
return instance;
}
void EventManager::dispatch_events() {
for (std::vector<std::tuple<std::unique_ptr<Event>, int,
std::type_index>>::iterator event_it
= this->events_queue.begin();
event_it != this->events_queue.end();) {
std::unique_ptr<Event> & event = std::get<0>(*event_it);
int channel = std::get<1>(*event_it);
std::type_index event_type = std::get<2>(*event_it);
bool event_handled = false;
if (channel) {
std::unordered_map<
std::type_index,
std::unordered_map<
int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::
iterator handlers_it
= subscribers_by_event_id.find(event_type);
if (handlers_it != subscribers_by_event_id.end()) {
std::unordered_map<
int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
handlers_map
= handlers_it->second;
std::unordered_map<
int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::
iterator handlers
= handlers_map.find(channel);
if (handlers != handlers_map.end()) {
std::vector<std::unique_ptr<IEventHandlerWrapper>> &
callbacks
= handlers->second;
for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::
iterator handler_it
= callbacks.begin();
handler_it != callbacks.end(); ++handler_it) {
if ((*handler_it)->exec(*event)) {
event_it = events_queue.erase(event_it);
event_handled = true;
break;
}
}
}
}
} else {
// Handle event for all channels
std::unordered_map<
std::type_index,
std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator
handlers_it
= this->subscribers.find(event_type);
if (handlers_it != this->subscribers.end()) {
std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
= handlers_it->second;
for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::
iterator handler_it
= handlers.begin();
handler_it != handlers.end(); ++handler_it) {
// remove event from queue since and continue when callback returns true
if ((*handler_it)->exec(*event)) {
event_it = this->events_queue.erase(event_it);
event_handled = true;
break;
}
}
}
}
if (!event_handled) {
++event_it;
}
}
}
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