UI. Possibility to transmit interval into time service

ui/src/app/api/time.service.js

@@ -256,11 +256,9 @@ function TimeService($translate, $http, $q, types) {
         return timewindow;
     }
 
-    function toHistoryTimewindow(timewindow, startTimeMs, endTimeMs) {
+    function toHistoryTimewindow(timewindow, startTimeMs, endTimeMs, interval = 0) {
-
-        var interval = 0;
         if (timewindow.history) {
-            interval = timewindow.history.interval;
+            interval = angular.isDefined(interval) ? interval : timewindow.history.interval;
         } else if (timewindow.realtime) {
             interval = timewindow.realtime.interval;
         }

ui/src/app/components/dashboard.directive.js

@@ -219,14 +219,14 @@ function DashboardController($scope, $rootScope, $element, $timeout, $mdMedia, $
                 }
             }, 0);
         },
-        onUpdateTimewindow: function(startTimeMs, endTimeMs) {
+        onUpdateTimewindow: function(startTimeMs, endTimeMs, interval) {
             if (!vm.originalDashboardTimewindow) {
                 vm.originalDashboardTimewindow = angular.copy(vm.dashboardTimewindow);
             }
             $timeout(function() {
-                vm.dashboardTimewindow = timeService.toHistoryTimewindow(vm.dashboardTimewindow, startTimeMs, endTimeMs);
+                vm.dashboardTimewindow = timeService.toHistoryTimewindow(vm.dashboardTimewindow, startTimeMs, endTimeMs, interval);
             }, 0);
-        }
+        },
     };
 
     addResizeListener(gridsterParent[0], onGridsterParentResize); // eslint-disable-line no-undef

ui/src/app/components/widget/widget.controller.js

@@ -76,9 +76,9 @@ export default function WidgetController($scope, $state, $timeout, $window, $ele
         defaultSubscription: null,
         dashboardTimewindow: dashboardTimewindow,
         timewindowFunctions: {
-            onUpdateTimewindow: function(startTimeMs, endTimeMs) {
+            onUpdateTimewindow: function(startTimeMs, endTimeMs, interval) {
                 if (widgetContext.defaultSubscription) {
-                    widgetContext.defaultSubscription.onUpdateTimewindow(startTimeMs, endTimeMs);
+                    widgetContext.defaultSubscription.onUpdateTimewindow(startTimeMs, endTimeMs, interval);
                 }
             },
             onResetTimewindow: function() {