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/*
 * Copyright (c) 2010 Kevin Smith
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include "Swift/Controllers/XMPPEvents/EventController.h"

#include <boost/bind.hpp>
#include <algorithm>

#include "Swift/Controllers/XMPPEvents/MessageEvent.h"
#include "Swift/Controllers/XMPPEvents/ErrorEvent.h"
#include "Swift/Controllers/XMPPEvents/SubscriptionRequestEvent.h"

namespace Swift {

EventController::EventController() {
}

EventController::~EventController() {
	foreach(boost::shared_ptr<StanzaEvent> event, events_) {
		event->onConclusion.disconnect(boost::bind(&EventController::handleEventConcluded, this, event));
	}
}

void EventController::handleIncomingEvent(boost::shared_ptr<StanzaEvent> sourceEvent) {
	boost::shared_ptr<MessageEvent> messageEvent = boost::dynamic_pointer_cast<MessageEvent>(sourceEvent);
	boost::shared_ptr<SubscriptionRequestEvent> subscriptionEvent = boost::dynamic_pointer_cast<SubscriptionRequestEvent>(sourceEvent);
	boost::shared_ptr<ErrorEvent> errorEvent = boost::dynamic_pointer_cast<ErrorEvent>(sourceEvent);
	if ((messageEvent && messageEvent->isReadable()) || subscriptionEvent || errorEvent) {
		events_.push_back(sourceEvent);
		sourceEvent->onConclusion.connect(boost::bind(&EventController::handleEventConcluded, this, sourceEvent));
		onEventQueueLengthChange(events_.size());
		onEventQueueEventAdded(sourceEvent);
		if (sourceEvent->getConcluded()) {
			handleEventConcluded(sourceEvent);
		}
	}
}

void EventController::handleEventConcluded(boost::shared_ptr<StanzaEvent> event) {
	event->onConclusion.disconnect(boost::bind(&EventController::handleEventConcluded, this, event));
	events_.erase(std::remove(events_.begin(), events_.end(), event), events_.end());
	onEventQueueLengthChange(events_.size());
}

void EventController::disconnectAll() {
	onEventQueueLengthChange.disconnect_all_slots();
	onEventQueueEventAdded.disconnect_all_slots();
}

void EventController::clear() {
	events_.clear();
	onEventQueueLengthChange(0);
}

}