1 files changed, 109 insertions, 0 deletions
diff --git a/mwe/events/src/eventManager.cpp b/mwe/events/src/eventManager.cpp
new file mode 100644
index 0000000..ce8e940
--- /dev/null
+++ b/mwe/events/src/eventManager.cpp
@@ -0,0 +1,109 @@
+#include "eventManager.h"
+
+void EventManager::shutdown()
+{
+    m_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 = m_subscribersByEventId.find(eventType);
+
+        if (subscribers != m_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;
+            }
+        }
+        m_subscribersByEventId[eventType][eventId].emplace_back(std::move(handler));
+
+    } else {
+        std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator subscribers = m_subscribers.find(eventType);
+        if (subscribers != m_subscribers.end()) {
+            std::vector<std::unique_ptr<IEventHandlerWrapper>>& handlers = subscribers->second;
+            for (std::unique_ptr<IEventHandlerWrapper>& it : handlers) {
+                if (it->getType() == handler->getType()) {
+                    // log for double register
+                    return;
+                }
+            }
+            handlers.emplace_back(std::move(handler));
+        } else {
+            m_subscribers[eventType].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 subscribers = m_subscribersByEventId.find(eventType);
+        if (subscribers != m_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()) {
+                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 = m_subscribers.find(eventType);
+        if (handlersIt != m_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)
+{
+    std::vector<std::unique_ptr<IEventHandlerWrapper>>& handlers = m_subscribers[event_.getEventType()];
+    for (std::unique_ptr<IEventHandlerWrapper>& handler : handlers) {
+        handler->exec(event_);
+    }
+
+    std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>& handlersMap = m_subscribersByEventId[event_.getEventType()];
+    std::unordered_map<int, std::vector<std::unique_ptr<IEventHandlerWrapper>>>::iterator handlersIt = handlersMap.find(eventId);
+    if (handlersIt != handlersMap.end()) {
+        std::vector<std::unique_ptr<IEventHandlerWrapper>>& callbacks = handlersIt->second;
+        for (std::vector<std::unique_ptr<IEventHandlerWrapper>>::iterator it = callbacks.begin(); it != callbacks.end();) {
+            std::unique_ptr<IEventHandlerWrapper>& handler = *it;
+            handler->exec(event_);
+            if (handler->isDestroyOnSuccess()) {
+                it = callbacks.erase(it);
+            } else {
+                ++it;
+            }
+        }
+    }
+}
+
+void EventManager::queueEvent(std::unique_ptr<Event>&& event_, int eventId)
+{
+    m_eventsQueue.emplace_back(std::move(event_), eventId);
+}
+
+void EventManager::dispatchEvents()
+{
+    for (std::vector<std::pair<std::unique_ptr<Event>, int>>::iterator eventIt = m_eventsQueue.begin(); eventIt != m_eventsQueue.end();) {
+        if (!eventIt->first.get()->getHandled()) {
+            triggerEvent(*eventIt->first.get(), eventIt->second);
+            eventIt = m_eventsQueue.erase(eventIt);
+        } else {
+            ++eventIt;
+        }
+    }
+}