Finished changing output widget logic.

IPython/html/static/notebook/js/codecell.js

@@ -110,6 +110,7 b' define(['
 
         // Attributes we want to override in this subclass.
         this.cell_type = "code";
+        var that  = this;
         this.element.focusout(
             function() { that.auto_highlight(); }
         );

IPython/html/static/notebook/js/outputarea.js

@@ -212,11 +212,9 b' define(['
             json.name = content.name;
         } else if (msg_type === "display_data") {
             json.data = content.data;
-            json.output_type = msg_type;
             json.metadata = content.metadata;
         } else if (msg_type === "execute_result") {
             json.data = content.data;
-            json.output_type = msg_type;
             json.metadata = content.metadata;
             json.execution_count = content.execution_count;
         } else if (msg_type === "error") {

IPython/html/static/widgets/js/widget_output.js

@@ -9,18 +9,18 b' define(['
     'use strict';
 
     var OutputView = widget.DOMWidgetView.extend({
-        initialize: function (parameters) {
             /**
              * Public constructor
              */
+        initialize: function (parameters) {
             OutputView.__super__.initialize.apply(this, [parameters]);
             this.model.on('msg:custom', this._handle_route_msg, this);
         },
 
-        render: function(){
             /**
              * Called when view is rendered.
              */
+        render: function(){
             this.output_area = new outputarea.OutputArea({
                 selector: this.$el, 
                 prompt_area: false, 
@@ -43,32 +43,33 b' define(['
             this.output_area.element.html(this.model.get('contents'));
         },
         
+        /**
+         * Handles re-routed iopub messages.
+         */
         _handle_route_msg: function(content) {
             if (content) {
-    //     return {
-    //         shell : {
-    //             reply : $.proxy(this._handle_execute_reply, this),
-    //             payload : {
-    //                 set_next_input : $.proxy(this._handle_set_next_input, this),
-    //                 page : $.proxy(this._open_with_pager, this)
-    //             }
-    //         },
-    //         iopub : {
-    //             output : function() { 
-    //                 that.output_area.handle_output.apply(that.output_area, arguments);
-    //             }, 
-    //             clear_output : function() { 
-    //                 that.output_area.handle_clear_output.apply(that.output_area, arguments);
-    //             }, 
-    //         },
-    //         input : $.proxy(this._handle_input_request, this)
-    //     };
-    // };
-                if (content.method == 'push') {
-                    cell.push_output_area(this.output_area);
-                } else if (content.method == 'pop') {
-                    cell.pop_output_area(this.output_area);
+                var msg_type = content.type;
+                var json = {
+                    output_type: msg_type
+                };
+
+                var data = content.args[0];
+                if (msg_type=='clear_output') {
+                    this.output_area.clear_output(data.wait || false);
+                    return;
+                } else if (msg_type === "stream") {
+                    data = content.kwargs.content;
+                    json.text = data.text;
+                    json.name = data.name;
+                } else if (msg_type === "display_data") {
+                    json.data = data.data;
+                    json.metadata = data.metadata;
+                } else {
+                    console.log("unhandled output message", msg);
+                    return;
                 }
+
+                this.output_area.append_output(json);    
             }
         },
     });

IPython/html/widgets/widget_output.py

@@ -38,13 +38,30 b' class Output(DOMWidget):'
             clear_output(*pargs, **kwargs)
 
     def __enter__(self):
+        """Called upon entering output widget context manager."""
         self._flush()
-        self.send({'method': 'push'})
+        kernel = get_ipython().kernel
+        session = kernel.session
+        send = session.send
+        self._original_send = send
+        self._session = session
+
+        def send_hook(stream, msg_or_type, *args, **kwargs):            
+            if stream is kernel.iopub_socket and msg_or_type in ['clear_output', 'stream', 'display_data']:
+                msg = {'type': msg_or_type, 'args': args, 'kwargs': kwargs}
+                self.send(msg)
+            else:
+                send(stream, msg_or_type, *args, **kwargs)
+                return
+
+        session.send = send_hook
 
     def __exit__(self, exception_type, exception_value, traceback):
+        """Called upon exiting output widget context manager."""
         self._flush()
-        self.send({'method': 'pop'})
+        self._session.send = self._original_send
 
     def _flush(self):
+        """Flush stdout and stderr buffers."""
         sys.stdout.flush()
         sys.stderr.flush()