/*
 * Copyright (c) 2010 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#pragma once

#include <vector>
#include <map>

#include <Swiften/Base/API.h>
#include <Swiften/Avatars/AvatarProvider.h>
#include <Swiften/JID/JID.h>

namespace Swift {
	class SWIFTEN_API CombinedAvatarProvider : public AvatarProvider {
		public:
			virtual boost::optional<std::string> getAvatarHash(const JID&) const;

			void addProvider(AvatarProvider*);
			void removeProvider(AvatarProvider*);

		private:
			void handleAvatarChanged(const JID&);
			boost::optional<std::string> getCombinedAvatarAndCache(const JID&) const;

		private:
			std::vector<AvatarProvider*> providers;
			mutable std::map<JID, std::string> avatars;
	};
}