Merge branch 'BF-5084' of /home/git/repositories/brainfood/ofbiz-comet-messenger

@@ -79,6 +79,7 @@ public class CometMessengerServlet extends HttpServlet implements CometProcessor
         response.setHeader("X-Accel-Buffering", "No");
         if (event.getEventType() == CometEvent.EventType.BEGIN) {
             Debug.logInfo("Begin for session: " + request.getSession(true).getId(), module);
+            event.getHttpServletRequest().setAttribute("org.apache.tomcat.comet.timeout", new Integer(0xFFFFFFFF));
             PrintWriter writer = response.getWriter();
             writer.println("{\"channel\":\"system\", \"message\":\"CONNECT\"}");
             writer.flush();

 define([], function() {
-    var listeners = [];
+    var channels = {};
     var messenger = {
         process: function() {
+            var self = this;
             var url = "/comet/messenger"
             var request =  new XMLHttpRequest();
             var responseLength = 0;
@@ -10,22 +11,19 @@ define([], function() {
             request.onreadystatechange = function() {
                 if (request.readyState == 3 || request.readyState == 4) {
                     if (request.status == 200){
-                        if (request.onreadystatechange) {
-                            request.onreadystatechange = null;
-                        }
                         if (request.responseText) {
                             var newText = request.responseText.substr(responseLength);
                             if (newText.length > 0) {
-                                for (var i=0; i < listeners.length; i++) {
-                                   listeners[i](newText); 
-                                }
+                                self.deliver(newText);
                             }
                             responseLength = request.responseText.length;
                         }
                     }
                     if (request.readyState == 4) {
+                        // Request is complete. Remove existing callback.
+                        request.onreadystatechange = null;
                         if (request.status == 200) {
-                            messenger.process();
+                            setTimeout(function() { messenger.process(); }, 500);
                         } else {
                             console.log('Error, retrying in 5 seconds');
                             setTimeout(function() { messenger.process(); }, 5000);
@@ -35,14 +33,33 @@ define([], function() {
             };
             request.send(null);
         },
+        deliver: function(newText) {
+            try {
+                var json = JSON.parse(newText);
+
+                if (json.channel && channels[json.channel]) {
+                    for (var i=0; i < channels[json.channel].length; i++) {
+                       channels[json.channel][i](json); 
+                    }
+                }
+            } catch (err) {
+                console.log('Error processing COMETd message', newText, err);
+            }
+        },
         addListener: function(listener) {
-            listeners.push(listener);
+            this.addListener('ALL', listener);
         },
-        removeListener: function(listener) {
-            var index = listeners.indexOf(listener);
-            if (index > -1) {
-                array.splice(index, 1);
+        addListener: function(channel, listener) {
+            if (!channels[channel]) {
+                channels[channel] = [];
             }
+            channels[channel].push(listener);
+        },
+        removeListener: function(listener) {
+            this.removeListener('ALL', listener);
+        },
+        removeListener: function(channel, listener) {
+            console.log('Remove listener from channel', listener, channel);
         }
     }
     messenger.process();