verysecrethero
104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
#include "Core\EventBroker.h"
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BaseEventRelay::~BaseEventRelay()
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{
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if (m_Broker != nullptr) {
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m_Broker->Unsubscribe(*this);
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}
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}
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void EventBroker::Unsubscribe(BaseEventRelay &relay) // ?
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{
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if (m_IsProcessing) {
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m_RelaysToUnsubscribe.push_back(&relay);
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} else {
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unsubscribeImmediate(relay);
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}
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}
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void EventBroker::Subscribe(BaseEventRelay &relay)
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{
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if (m_IsProcessing) {
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m_RelaysToSubscribe.push_back(&relay);
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} else {
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subscribeImmediate(relay);
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}
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}
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int EventBroker::Process(std::string contextTypeName)
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{
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m_IsProcessing = true;
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auto it = m_ContextRelays.find(contextTypeName);
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if (it == m_ContextRelays.end()) {
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return 0;
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}
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EventRelays_t &relays = it->second;
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int eventsProcessed = 0;
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for (auto &pair : *m_EventQueueRead) {
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std::string &eventTypeName = pair.first;
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std::shared_ptr<Event> event = pair.second;
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auto itpair = relays.equal_range(eventTypeName);
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for (auto it2 = itpair.first; it2 != itpair.second; it2++)
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{
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std::string name = it2->first;
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BaseEventRelay* relay = it2->second;
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relay->Receive(event);
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eventsProcessed++;
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}
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}
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m_IsProcessing = false;
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// Process pending subscriptions
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for (auto& r : m_RelaysToSubscribe) {
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subscribeImmediate(*r);
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}
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m_RelaysToSubscribe.clear();
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// Process pending unsubscriptions
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for (auto& r : m_RelaysToUnsubscribe) {
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unsubscribeImmediate(*r);
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}
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m_RelaysToUnsubscribe.clear();
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return eventsProcessed;
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}
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void EventBroker::Swap()
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{
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std::swap(m_EventQueueRead, m_EventQueueWrite);
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}
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void EventBroker::Clear()
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{
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m_EventQueueWrite->clear();
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}
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void EventBroker::subscribeImmediate(BaseEventRelay& relay)
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{
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relay.m_Broker = this;
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m_ContextRelays[relay.m_ContextTypeName].insert(std::make_pair(relay.m_EventTypeName, &relay));
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}
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void EventBroker::unsubscribeImmediate(BaseEventRelay& relay)
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{
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auto contextIt = m_ContextRelays.find(relay.m_ContextTypeName);
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if (contextIt == m_ContextRelays.end()) {
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return;
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}
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auto eventRelays = contextIt->second;
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auto itpair = eventRelays.equal_range(relay.m_EventTypeName);
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for (auto it = itpair.first; it != itpair.second; ++it) {
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if (it->second == &relay) {
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relay.m_Broker = nullptr;
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eventRelays.erase(it);
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break;
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}
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}
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}
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