/* * Copyright (c) 2010-2016 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ #include <Swiften/Avatars/CombinedAvatarProvider.h> #include <algorithm> #include <boost/bind.hpp> #include <Swiften/Base/Log.h> namespace Swift { boost::optional<std::string> CombinedAvatarProvider::getAvatarHash(const JID& jid) const { return getCombinedAvatarAndCache(jid); } void CombinedAvatarProvider::addProvider(AvatarProvider* provider) { provider->onAvatarChanged.connect(boost::bind(&CombinedAvatarProvider::handleAvatarChanged, this, _1)); providers.push_back(provider); } void CombinedAvatarProvider::removeProvider(AvatarProvider* provider) { std::vector<AvatarProvider*>::iterator i = std::remove(providers.begin(), providers.end(), provider); for(std::vector<AvatarProvider*>::iterator j = i; j < providers.end(); ++j) { provider->onAvatarChanged.disconnect(boost::bind(&CombinedAvatarProvider::handleAvatarChanged, this, _1)); } providers.erase(i, providers.end()); } void CombinedAvatarProvider::handleAvatarChanged(const JID& jid) { std::string oldHash; std::map<JID, std::string>::const_iterator i = avatars.find(jid); if (i != avatars.end()) { oldHash = i->second; } boost::optional<std::string> newHash = getCombinedAvatarAndCache(jid); if (newHash != oldHash) { SWIFT_LOG(debug) << "Avatar changed: " << jid << ": " << oldHash << " -> " << (newHash ? newHash.get() : "NULL") << std::endl; onAvatarChanged(jid); } } boost::optional<std::string> CombinedAvatarProvider::getCombinedAvatarAndCache(const JID& jid) const { SWIFT_LOG(debug) << "JID: " << jid << std::endl; boost::optional<std::string> hash; for (size_t i = 0; i < providers.size() && !hash; ++i) { hash = providers[i]->getAvatarHash(jid); SWIFT_LOG(debug) << "Provider " << providers[i] << ": " << (hash ? hash.get() : "NULL") << std::endl; } if (hash) { avatars[jid] = *hash; } else { avatars[jid] = ""; } return hash; } }