Use event system to alert on disconnection

glances/outputs/static/js/components/glances/controller.js

@@ -10,7 +10,6 @@ function GlancesController($scope, $timeout, GlancesStats, REFRESH_TIME, Hotkeys
         data.isLinux = data.stats['system']['os_name'] === 'Linux';
         data.isMac = data.stats['system']['os_name'] === 'Darwin';
         data.isWindows = data.stats['system']['os_name'] === 'Windows';
-        vm.is_disconnected = false;
 
         $scope.$broadcast('data_refreshed', data);
         vm.dataLoaded = true;
@@ -19,7 +18,7 @@ function GlancesController($scope, $timeout, GlancesStats, REFRESH_TIME, Hotkeys
     };
 
     var refreshDataError = function() {
-        vm.is_disconnected = true;
+        $scope.$broadcast('is_disconnected');
         nextLoad();
     };
 

glances/outputs/static/js/components/plugin-system/controller.js

@@ -19,5 +19,10 @@ function GlancesPluginSystemController($scope) {
       vm.os.name = stats['os_name'];
       vm.os.version = stats['os_version'];
       vm.humanReadableName = stats['hr_name'];
+      vm.isDisconnected = false;
+    });
+
+    $scope.$on('is_disconnected', function() {
+      vm.isDisconnected = true;
     });
 }