Allow HTMLView to communicate back to server

Author: tcstewar

nengo_gui/components/htmlview.py

@@ -43,3 +43,6 @@ def javascript(self):
 
     def code_python_args(self, uids):
         return [uids[self.obj]]
+
+    def message(self, msg):
+        self.obj_output._nengo_message_ = msg;

nengo_gui/static/components/htmlview.js

@@ -22,6 +22,8 @@ Nengo.HTMLView = function(parent, sim, args) {
     this.pdiv.classList.add('htmlview');
     this.div.appendChild(this.pdiv);
 
+    this.pdiv.ws = this.ws;
+
     /** for storing the accumulated data */
     this.data_store = new Nengo.DataStore(1, this.sim, 0);