when accessing map without privileges error info box is provided

frontend-js/src/main/js/GuiConnector.js

 "use strict";
 
 var logger = require('./logger');
+var SecurityError = require('./SecurityError');
 
 /**
  * This static global object contains set of functions that returns/set data in
@@ -122,7 +123,9 @@ GuiConnector.alert = function(error) {
     }).siblings('.ui-dialog-titlebar').css("background", "red");
   }
   var message = error;
-  if (message instanceof Error) {
+  if (message instanceof SecurityError) {
+    message = error.message + "<p>Please <a href=\"login.xhtml\">login</a> to access this resuorce</p>";
+  } else if (message instanceof Error) {
     message = "Unexpected error occured:<p>" + error.message + "</p>";
   }
   self._errorDialogContent.innerHTML = message;

frontend-js/src/main/js/InvalidCredentialsError.js

@@ -4,12 +4,14 @@
 
 var logger = require('./logger');
 
+var SecurityError = require("./SecurityError");
+
 function InvalidCredentialsError(message) {
   this.message = message;
   this.stack = (new Error()).stack;
 }
 
-InvalidCredentialsError.prototype = Object.create(Error.prototype);
+InvalidCredentialsError.prototype = Object.create(SecurityError.prototype);
 InvalidCredentialsError.prototype.constructor = InvalidCredentialsError;
 
 module.exports = InvalidCredentialsError;

frontend-js/src/main/js/SecurityError.js

+"use strict";
+
+/* exported logger */
+
+var logger = require('./logger');
+
+function SecurityError(message) {
+  this.message = message;
+  this.stack = (new Error()).stack;
+}
+
+SecurityError.prototype = Object.create(Error.prototype);
+SecurityError.prototype.constructor = SecurityError;
+
+module.exports = SecurityError;

frontend-js/src/main/js/ServerConnector.js

@@ -26,6 +26,7 @@ var NetworkError = require('./NetworkError');
 var Project = require('./map/data/Project');
 var Reaction = require('./map/data/Reaction');
 var ReferenceGenome = require('./map/data/ReferenceGenome');
+var SecurityError = require('./SecurityError');
 var SessionData = require('./SessionData');
 var User = require('./map/data/User');
 
@@ -611,9 +612,16 @@ ServerConnector.getProject = function(projectId) {
   }).then(function(overlays) {
     project.getModel().addLayouts(overlays);
     return project;
-  }).then(null, function(error){
-    if ((error instanceof NetworkError) && (error.statusCode === HttpStatus.NOT_FOUND)) {
-      return null;
+  }).then(null, function(error) {
+    if ((error instanceof NetworkError)) {
+      switch (error.statusCode) {
+      case HttpStatus.NOT_FOUND:
+        return null;
+      case HttpStatus.FORBIDDEN:
+        return Promise.reject(new SecurityError("Access denied."));
+      default:
+        return Promise.reject(error);
+      }
     } else {
       return Promise.reject(error);
     }