GUAC-1161: Store notification state in session-local storage.

guacamole/src/main/webapp/app/notification/notificationModule.js

@@ -23,4 +23,6 @@
 /**
  * The module for code used to display arbitrary notifications.
  */
-angular.module('notification', []);
+angular.module('notification', [
+    'storage'
+]);

guacamole/src/main/webapp/app/notification/services/guacNotification.js

@@ -23,33 +23,48 @@
 /**
  * Service for displaying notifications and modal status dialogs.
  */
-angular.module('notification').factory('guacNotification', ['$rootScope',
-        function guacNotification($rootScope) {
+angular.module('notification').factory('guacNotification', ['$injector',
+        function guacNotification($injector) {
+
+    // Required services
+    var $rootScope            = $injector.get('$rootScope');
+    var sessionStorageFactory = $injector.get('sessionStorageFactory');
 
     var service = {};
 
     /**
-     * The current status notification, or false if no status is currently
-     * shown.
+     * Getter/setter which retrieves or sets the current status notification,
+     * which may simply be false if no status is currently shown.
+     * 
+     * @type Function
+     */
+    var storedStatus = sessionStorageFactory.create(false);
+
+    /**
+     * Getter/setter which retrieves or sets an array of all currently-visible
+     * notifications.
+     * 
+     * @type Function
+     */
+    var storedNotifications = sessionStorageFactory.create([]);
+
+    /**
+     * Getter/setter which retrieves or sets the ID of the most recently shown
+     * notification, or 0 if no notifications have yet been shown.
+     *
+     * @type Function
+     */
+    var storedNotificationUniqueID = sessionStorageFactory.create(0);
+
+    /**
+     * Retrieves the current status notification, which may simply be false if
+     * no status is currently shown.
      * 
      * @type Notification|Boolean
      */
-    service.status = false;
-
-    /**
-     * All currently-visible notifications.
-     * 
-     * @type Notification[]
-     */
-    service.notifications = [];
-
-    /**
-     * The ID of the most recently shown notification, or 0 if no notifications
-     * have yet been shown.
-     *
-     * @type Number
-     */
-    var notificationUniqueID = 0;
+    service.getStatus = function getStatus() {
+        return storedStatus();
+    };
 
     /**
      * Shows or hides the given notification as a modal status. If a status
@@ -77,8 +92,18 @@ angular.module('notification').factory('guacNotification', ['$rootScope',
      * guacNotification.showStatus(false);
      */
     service.showStatus = function showStatus(status) {
-        if (!service.status || !status)
-            service.status = status;
+        if (!storedStatus() || !status)
+            storedStatus(status);
+    };
+
+    /**
+     * Returns an array of all currently-visible notifications.
+     *
+     * @returns {Notification[]}
+     *     An array of all currently-visible notifications.
+     */
+    service.getNotifications = function getNotifications() {
+        return storedNotifications();
     };
 
     /**
@@ -104,9 +129,9 @@ angular.module('notification').factory('guacNotification', ['$rootScope',
      * });
      */
     service.addNotification = function addNotification(notification) {
-        var id = ++notificationUniqueID;
+        var id = storedNotificationUniqueID(storedNotificationUniqueID() + 1);
 
-        service.notifications.push({
+        storedNotifications().push({
             notification    : notification,
             id              : id
         });
@@ -122,12 +147,16 @@ angular.module('notification').factory('guacNotification', ['$rootScope',
      *     from the initial call to addNotification.
      */
     service.removeNotification = function removeNotification(id) {
-        for (var i = 0; i < service.notifications.length; i++) {
-            if (service.notifications[i].id === id) {
-                service.notifications.splice(i, 1);
+
+        var notifications = storedNotifications();
+
+        for (var i = 0; i < notifications.length; i++) {
+            if (notifications[i].id === id) {
+                notifications.splice(i, 1);
                 return;
             }
         }
+
     };
            
     // Hide status upon navigation

guacamole/src/main/webapp/index.html

@@ -38,9 +38,9 @@ THE SOFTWARE.
         <div ng-if="!expectedCredentials">
         
             <!-- Global status/error dialog -->
-            <div ng-class="{shown: guacNotification.status}" class="status-outer">
+            <div ng-class="{shown: guacNotification.getStatus()}" class="status-outer">
                 <div class="status-middle">
-                    <guac-notification notification="guacNotification.status"></guac-notification>
+                    <guac-notification notification="guacNotification.getStatus()"></guac-notification>
                 </div>
             </div>
             
@@ -49,7 +49,7 @@ THE SOFTWARE.
             
             <!-- Notification area -->
             <div id="notificationArea">
-                <div ng-repeat="wrapper in guacNotification.notifications">
+                <div ng-repeat="wrapper in guacNotification.getNotifications()">
                     <guac-notification notification="wrapper.notification"></guac-notification>
                 </div>                
             </div>