1 files changed, 130 insertions, 0 deletions
diff --git a/mwe/events/src/eventManager.cpp b/mwe/events/src/eventManager.cpp
new file mode 100644
index 0000000..34a093d
--- /dev/null
+++ b/mwe/events/src/eventManager.cpp
@@ -0,0 +1,130 @@
+#include "eventManager.h"
+
+void EventManager::shutdown() { subscribers.clear(); }
+
+void EventManager::subscribe(int eventType,
+							 std::unique_ptr<IEventHandlerWrapper> && handler,
+							 int eventId) {
+	if (eventId) {
+		std::unordered_map<
+			int, std::unordered_map<
+					 int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::
+			iterator subscribers
+			= subscribersByEventId.find(eventType);
+
+		if (subscribers != subscribersByEventId.end()) {
+			std::unordered_map<
+				int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
+				handlersMap
+				= subscribers->second;
+			std::unordered_map<
+				int,
+				std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator
+				handlers
+				= handlersMap.find(eventId);
+			if (handlers != handlersMap.end()) {
+				handlers->second.emplace_back(std::move(handler));
+				return;
+			}
+		}
+		subscribersByEventId[eventType][eventId].emplace_back(
+			std::move(handler));
+
+	} else {
+		auto & handlers = subscribers[eventType];
+		handlers.emplace_back(std::move(handler));
+	}
+}
+
+void EventManager::unsubscribe(int eventType, const std::string & handlerName,
+							   int eventId) {
+	if (eventId) {
+		std::unordered_map<
+			int, std::unordered_map<
+					 int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>>::
+			iterator subscriberList
+			= subscribersByEventId.find(eventType);
+		if (subscriberList != subscribersByEventId.end()) {
+			std::unordered_map<
+				int, std::vector<std::unique_ptr<IEventHandlerWrapper>>> &
+				handlersMap
+				= subscriberList->second;
+			std::unordered_map<
+				int,
+				std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator
+				handlers
+				= handlersMap.find(eventId);
+			if (handlers != handlersMap.end()) {
+				std::vector<std::unique_ptr<IEventHandlerWrapper>> & callbacks
+					= handlers->second;
+				for (std::vector<
+						 std::unique_ptr<IEventHandlerWrapper>>::iterator it
+					 = callbacks.begin();
+					 it != callbacks.end(); ++it) {
+					if (it->get()->getType() == handlerName) {
+						it = callbacks.erase(it);
+						return;
+					}
+				}
+			}
+		}
+	} else {
+		std::unordered_map<
+			int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator
+			handlersIt
+			= subscribers.find(eventType);
+		if (handlersIt != subscribers.end()) {
+			std::vector<std::unique_ptr<IEventHandlerWrapper>> & handlers
+				= handlersIt->second;
+			for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::iterator it
+				 = handlers.begin();
+				 it != handlers.end(); ++it) {
+				if (it->get()->getType() == handlerName) {
+					it = handlers.erase(it);
+					return;
+				}
+			}
+		}
+	}
+}
+
+void EventManager::triggerEvent(const Event & event_, int eventId) {
+	if (eventId > 0) {
+		auto handlersIt
+			= subscribersByEventId[event_.getEventType()].find(eventId);
+		if (handlersIt != subscribersByEventId[event_.getEventType()].end()) {
+			std::vector<std::unique_ptr<IEventHandlerWrapper>> & callbacks
+				= handlersIt->second;
+			for (auto it = callbacks.begin(); it != callbacks.end();) {
+				(*it)->exec(event_);
+				if ((*it)->isDestroyOnSuccess()) {
+					it = callbacks.erase(it);
+				} else {
+					++it;
+				}
+			}
+		}
+	} else {
+		auto & handlers = subscribers[event_.getEventType()];
+		for (std::unique_ptr<IEventHandlerWrapper> & handler : handlers) {
+			handler->exec(event_);
+		}
+	}
+}
+
+void EventManager::queueEvent(std::unique_ptr<Event> && event_, int eventId) {
+	eventsQueue.emplace_back(std::move(event_), eventId);
+}
+
+void EventManager::dispatchEvents() {
+	for (std::vector<std::pair<std::unique_ptr<Event>, int>>::iterator eventIt
+		 = eventsQueue.begin();
+		 eventIt != eventsQueue.end();) {
+		if (!eventIt->first.get()->getHandled()) {
+			triggerEvent(*eventIt->first.get(), eventIt->second);
+			eventIt = eventsQueue.erase(eventIt);
+		} else {
+			++eventIt;
+		}
+	}
+}