GUACAMOLE-526: Add convenience callback for displaying modal notifications strictly for REST errors, while logging all other promise rejections.

guacamole/src/main/webapp/app/rest/restModule.js

@@ -21,4 +21,7 @@
  * The module for code relating to communication with the REST API of the
  * Guacamole web application.
  */
-angular.module('rest', ['auth']);
+angular.module('rest', [
+    'auth',
+    'notification'
+]);

guacamole/src/main/webapp/app/rest/services/requestService.js

@@ -25,8 +25,9 @@ angular.module('rest').factory('requestService', ['$injector',
         function requestService($injector) {
 
     // Required services
-    var $http = $injector.get('$http');
+    var $http            = $injector.get('$http');
-    var $log  = $injector.get('$log');
+    var $log             = $injector.get('$log');
+    var guacNotification = $injector.get('guacNotification');
 
     // Required types
     var Error = $injector.get('Error');
@@ -115,6 +116,19 @@ angular.module('rest').factory('requestService', ['$injector',
         $log.warn(error.type, error.message || error.translatableMessage);
     });
 
+    /**
+     * Promise error callback which displays a modal notification for all
+     * rejections due to REST errors. The message displayed to the user within
+     * the notification is provided by the contents of the @link{Error} object
+     * within the REST response. All other rejections, such as those due to
+     * JavaScript errors, are logged to the browser console without displaying
+     * any notification.
+     *
+     * @constant
+     * @type Function
+     */
+    service.SHOW_NOTIFICATION = service.createErrorCallback(guacNotification.showRequestError);
+
     return service;
 
 }]);