Allow to generate events from the nodes, whenever some any events.

i.e.
'server-connect' and 'server-disconnected' events will be generated
while server gets connected and disconnected respectively.

For demo purpose - listening to the server connection from the test
script.

web/pgadmin/browser/server_groups/servers/templates/servers/servers.js

@@ -95,6 +95,7 @@ function($, _, S, pgAdmin, pgBrowser, alertify) {
                     if (pgBrowser.serverInfo && d._id in pgBrowser.serverInfo) {
                       delete pgBrowser.serverInfo[d._id]
                     }
+                    obj.trigger('server-disconnected', obj, i, d);
                   }
                 },
                 error: function(xhr, status, error) {
@@ -235,7 +236,13 @@ function($, _, S, pgAdmin, pgBrowser, alertify) {
           _.extend(data, res.data);
 
           alertify.success(res.info);
-          setTimeout(function() { tree.select(item); tree.open(item); }, 10);
+          obj.trigger('server-connected', obj, item, data);
+
+          setTimeout(function() {
+            tree.select(item);
+            tree.open(item);
+          }, 10);
+                    
         }
       };
 

web/pgadmin/browser/templates/browser/js/node.js

@@ -46,7 +46,7 @@ function($, _, S, pgAdmin, Menu, Backbone, Alertify, Backform) {
     return child;
   };
 
-  _.extend(pgAdmin.Browser.Node, {
+  _.extend(pgAdmin.Browser.Node, Backbone.Events, {
     // Node type
     type: undefined,
     // Label

web/pgadmin/test/static/js/test.js

@@ -1,6 +1,6 @@
 define(
-  ['jquery', 'alertify', 'pgadmin'],
-  function($, alertify, pgAdmin) {
+  ['jquery', 'alertify', 'pgadmin', 'pgadmin.node.server'],
+  function($, alertify, pgAdmin, pgServer) {
     pgAdmin = pgAdmin || window.pgAdmin || {};
 
     pgAdmin.Test = {
@@ -69,5 +69,12 @@ define(
       }
     };
 
+    pgServer.on(
+      'server-connected', function() {
+        console.log(arguments);
+        console.log('Yay - we connected the server!');
+      },
+      {'a': 'test'});
+
     return pgAdmin.Test;
 });