--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Samples/SimpleViewer/Wasm/SimpleViewerWasmApplicationAdapter.cpp	Thu Oct 11 13:16:54 2018 +0200
@@ -0,0 +1,51 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "SimpleViewerWasmApplicationAdapter.h"
+
+namespace SimpleViewer
+{
+
+  SimpleViewerWasmApplicationAdapter::SimpleViewerWasmApplicationAdapter(MessageBroker &broker, SimpleViewerApplication &application)
+      : WasmPlatformApplicationAdapter(broker, application),
+        viewerApplication_(application)
+  {
+    application.RegisterObserverCallback(new Callable<SimpleViewerWasmApplicationAdapter, SimpleViewerApplication::StatusUpdatedMessage>(*this, &SimpleViewerWasmApplicationAdapter::OnStatusUpdated));
+  }
+
+  void SimpleViewerWasmApplicationAdapter::OnStatusUpdated(const SimpleViewerApplication::StatusUpdatedMessage &message)
+  {
+    Json::Value statusJson;
+    message.status_.ToJson(statusJson);
+
+    Json::Value event;
+    event["event"] = "appStatusUpdated";
+    event["data"] = statusJson;
+
+    Json::StreamWriterBuilder builder;
+    std::unique_ptr<Json::StreamWriter> writer(builder.newStreamWriter());
+    std::ostringstream outputStr;
+
+    writer->write(event, &outputStr);
+
+    NotifyStatusUpdateFromCppToWeb(outputStr.str());
+  }
+
+} // namespace SimpleViewer
\ No newline at end of file