Resolve thumb refresh issue

applications/gui2/src/views/thumbnails.cpp

@@ -140,6 +140,8 @@ void Thumbnails::updateThumbnails() {
 			int source = thumbs.thumbnails.size();
 			auto &frame = fs->frames[source];
 
+			perform_layout = true;
+
 			std::string name = "No Name";
 			if (frame.has(Channel::MetaData)) {
 				const auto &meta = frame.get<std::map<std::string,std::string>>(Channel::MetaData);

components/control/cpp/src/master.cpp

@@ -82,6 +82,8 @@ Master::Master(Configurable *root, Universe *net)
 		ftl::UUID peer = p->id();
 		auto cs = getConfigurables(peer);
 		for (auto c : cs) {
+			if (ftl::config::find(c) != nullptr) continue;
+
 			//LOG(INFO) << "NET CONFIG: " << c;
 			ftl::config::json_t *configuration = new ftl::config::json_t;
 			*configuration = getConfigurable(peer, c);

components/streams/include/ftl/streams/feed.hpp

@@ -105,6 +105,7 @@ private:
 
 	std::vector<std::string> netcams_;
 	ftl::Handler<uint32_t> new_sources_cb_;
+	ftl::Handler<uint32_t> add_src_cb_;
 	ftl::Handler<uint32_t> remove_sources_cb_;
 
 	std::vector<Filter*> filters_;
@@ -177,6 +178,8 @@ public:
 
 	inline ftl::Handle onNewSources(const std::function<bool(uint32_t)> &cb) { return new_sources_cb_.on(cb); }
 
+	inline ftl::Handle onAdd(const std::function<bool(uint32_t)> &cb) { return add_src_cb_.on(cb); }
+
 	inline ftl::Handle onRemoveSources(const std::function<bool(uint32_t)> &cb) { return remove_sources_cb_.on(cb); }
 
 	cv::Mat getThumbnail(const std::string &uri);

components/streams/src/feed.cpp

@@ -634,6 +634,8 @@ uint32_t Feed::add(const std::string &path) {
 		// ftl::URI instead of std::string as argument. Note the bug above.
 		// TODO: write unit test for uri parsing
 		add(fsid, uri.getBaseURI(), fstream);
+
+		add_src_cb_.trigger(fsid);
 		return fsid;
 	}
 	else if (scheme == ftl::URI::SCHEME_DEVICE) {
@@ -680,6 +682,7 @@ uint32_t Feed::add(const std::string &path) {
 			creator->start();
 		}
 
+		add_src_cb_.trigger(fsid);
 		return fsid;
 	}
 
@@ -710,6 +713,9 @@ uint32_t Feed::add(const std::string &path) {
 		LOG(INFO)	<< "Add Stream: "
 					<< stream->value("uri", std::string("NONE"))
 					<< " (" << fsid << ")";
+
+		add_src_cb_.trigger(fsid);
+		return fsid;
 	}
 	else{
 		throw ftl::exception("bad uri");