--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/Samples/SimpleViewer/Wasm/simple-viewer.ts	Thu Oct 11 13:16:54 2018 +0200
@@ -0,0 +1,75 @@
+///<reference path='../../../../Platforms/Wasm/wasm-application-runner.ts'/>
+
+InitializeWasmApplication("OrthancStoneSimpleViewer", "/orthanc");
+
+function SelectTool(toolName: string) {
+  var command = {
+    command: "selectTool:" + toolName,
+    commandType: "generic-no-arg-command",
+    args: {
+    }                                                                                                                       
+  };
+  SendMessageToStoneApplication(JSON.stringify(command));
+
+}
+
+function PerformAction(actionName: string) {
+  var command = {
+    command: "action:" + actionName,
+    commandType: "generic-no-arg-command",
+    args: {
+    }
+  };
+  SendMessageToStoneApplication(JSON.stringify(command));
+}
+
+class SimpleViewerUI {
+
+  private _labelPatientId: HTMLSpanElement;
+  private _labelStudyDescription: HTMLSpanElement;
+
+  public constructor() {
+    // install "SelectTool" handlers
+    document.querySelectorAll("[tool-selector]").forEach((e) => {
+      console.log(e);
+      (e as HTMLButtonElement).addEventListener("click", () => {
+        console.log(e);
+        SelectTool(e.attributes["tool-selector"].value);
+      });
+    });
+
+    // install "PerformAction" handlers
+    document.querySelectorAll("[action-trigger]").forEach((e) => {
+      (e as HTMLButtonElement).addEventListener("click", () => {
+        PerformAction(e.attributes["action-trigger"].value);
+      });
+    });
+
+    // connect all ui elements to members
+    this._labelPatientId = document.getElementById("label-patient-id") as HTMLSpanElement;
+    this._labelStudyDescription = document.getElementById("label-study-description") as HTMLSpanElement;
+  }
+
+  public onAppStatusUpdated(status: any) {
+    this._labelPatientId.innerText = status["patientId"];
+    this._labelStudyDescription.innerText = status["studyDescription"];
+    // this.highlighThumbnail(status["currentInstanceIdInMainViewport"]);
+  }
+
+}
+
+var ui = new SimpleViewerUI();
+
+// this method is called "from the C++ code" when the StoneApplication is updated.
+// it can be used to update the UI of the application
+function UpdateWebApplication(statusUpdateMessageString: string) {
+  console.log("updating web application: ", statusUpdateMessageString);
+  let statusUpdateMessage = JSON.parse(statusUpdateMessageString);
+
+  if ("event" in statusUpdateMessage) {
+    let eventName = statusUpdateMessage["event"];
+    if (eventName == "appStatusUpdated") {
+      ui.onAppStatusUpdated(statusUpdateMessage["data"]);
+    }
+  }
+}