Modules - Added activation mechanism and conditions

src/Artemis.UI/Screens/RootView.xaml

@@ -51,13 +51,13 @@
     </mde:MaterialWindow.Resources>
     <materialDesign:DialogHost Identifier="RootDialog" DialogTheme="Inherit" SnackbarMessageQueue="{Binding MainMessageQueue}">
         <Grid>
-            <materialDesign:DrawerHost IsLeftDrawerOpen="{Binding IsSidebarVisible}">
+            <materialDesign:DrawerHost IsLeftDrawerOpen="{Binding SidebarViewModel.IsSidebarOpen}">
                 <materialDesign:DrawerHost.LeftDrawerContent>
                     <ContentControl s:View.Model="{Binding SidebarViewModel}" Width="220" ClipToBounds="False" />
                 </materialDesign:DrawerHost.LeftDrawerContent>
                 <DockPanel>
                     <mde:AppBar Type="Dense"
-                                IsNavigationDrawerOpen="{Binding IsSidebarVisible, Mode=TwoWay}"
+                                IsNavigationDrawerOpen="{Binding SidebarViewModel.IsSidebarOpen, Mode=TwoWay}"
                                 Title="{Binding ActiveItem.DisplayName}"
                                 ShowNavigationDrawerButton="True"
                                 DockPanel.Dock="Top">

src/Artemis.UI/Screens/RootViewModel.cs

@@ -66,13 +66,7 @@ namespace Artemis.UI.Screens
             get => _mainMessageQueue;
             set => SetAndNotify(ref _mainMessageQueue, value);
         }
-
-        public bool IsSidebarVisible
-        {
-            get => _isSidebarVisible;
-            set => SetAndNotify(ref _isSidebarVisible, value);
-        }
-
+        
         public bool ActiveItemReady
         {
             get => _activeItemReady;
@@ -140,7 +134,7 @@ namespace Artemis.UI.Screens
         {
             if (e.PropertyName == nameof(SidebarViewModel.SelectedItem))
             {
-                IsSidebarVisible = false;
+                SidebarViewModel.IsSidebarOpen = false;
                 ActiveItemReady = false;
 
                 // Allow the menu to close, it's slower but feels more responsive, funny how that works right
@@ -254,7 +248,7 @@ namespace Artemis.UI.Screens
         protected override void OnClose()
         {
             SidebarViewModel.Dispose();
-            
+
 
             // Lets force the GC to run after closing the window so it is obvious to users watching task manager
             // that closing the UI will decrease the memory footprint of the application.

src/Artemis.UI/Screens/Sidebar/SidebarView.xaml

@@ -10,22 +10,19 @@
              mc:Ignorable="d"
              d:DesignHeight="450" d:DesignWidth="800"
              d:DataContext="{d:DesignInstance sidebar:SidebarViewModel}">
-    <StackPanel>
-        <!-- Placeholder -->
-        <StackPanel Margin="15">
-            <materialDesign:PackIcon Kind="QuestionMarkCircle" Width="50" Height="50" />
-            <TextBlock Style="{StaticResource MaterialDesignHeadline6TextBlock}" Margin="0 15 0 0">
-                Active module
-            </TextBlock>
-            <ComboBox BorderThickness="0" Foreground="{DynamicResource MaterialDesignNavigationItemSubheader}" materialDesign:HintAssist.Hint="Active profile">
-                <ComboBoxItem>Profile 1</ComboBoxItem>
-                <ComboBoxItem>Profile 2</ComboBoxItem>
-                <ComboBoxItem>Profile 3</ComboBoxItem>
-                <ComboBoxItem>Profile 4</ComboBoxItem>
-            </ComboBox>
-        </StackPanel>
+    <Grid>
+        <Grid.RowDefinitions>
+            <!-- no idea why this has to be 0 -->
+            <RowDefinition Height="0" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
 
-        <controls:SideNavigation Items="{Binding SidebarItems}" SelectedItem="{Binding SelectedItem}" WillSelectNavigationItemCommand="{s:Action SelectItem}" />
-    </StackPanel>
+        <Image Grid.Row="0" Grid.RowSpan="2" Source="/Resources/Images/Sidebar/sidebar-header.png" Stretch="Uniform" VerticalAlignment="Top" />
+        <TextBlock Grid.Row="1" Style="{StaticResource MaterialDesignHeadline6TextBlock}" Margin="15" materialDesign:ShadowAssist.ShadowDepth="Depth1" Text="{Binding ActiveModules}"/>
+        
+        <controls:SideNavigation Grid.Row="3" Items="{Binding SidebarItems}" SelectedItem="{Binding SelectedItem}" WillSelectNavigationItemCommand="{s:Action SelectItem}" Margin="0 5 0 0"/>
+    </Grid>
 
 </UserControl>

src/Artemis.UI/Screens/Sidebar/SidebarViewModel.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using System.Timers;
 using Artemis.Core.Events;
 using Artemis.Core.Services.Interfaces;
 using Artemis.UI.Events;
@@ -27,6 +28,9 @@ namespace Artemis.UI.Screens.Sidebar
         private BindableCollection<INavigationItem> _sidebarItems;
         private Dictionary<INavigationItem, Core.Plugins.Abstract.Module> _sidebarModules;
         private IScreen _selectedItem;
+        private bool _isSidebarOpen;
+        private readonly Timer _activeModulesUpdateTimer;
+        private string _activeModules;
 
         public SidebarViewModel(IKernel kernel, IEventAggregator eventAggregator, IModuleVmFactory moduleVmFactory, IPluginService pluginService)
         {
@@ -37,6 +41,10 @@ namespace Artemis.UI.Screens.Sidebar
             SidebarModules = new Dictionary<INavigationItem, Core.Plugins.Abstract.Module>();
             SidebarItems = new BindableCollection<INavigationItem>();
 
+            _activeModulesUpdateTimer = new Timer(1000);
+            _activeModulesUpdateTimer.Start();
+            _activeModulesUpdateTimer.Elapsed += ActiveModulesUpdateTimerOnElapsed;
+
             _pluginService.PluginEnabled += PluginServiceOnPluginEnabled;
             _pluginService.PluginDisabled += PluginServiceOnPluginDisabled;
 
@@ -44,6 +52,15 @@ namespace Artemis.UI.Screens.Sidebar
             eventAggregator.Subscribe(this);
         }
 
+        private void ActiveModulesUpdateTimerOnElapsed(object sender, EventArgs e)
+        {
+            if (!IsSidebarOpen)
+                return;
+
+            var activeModules = SidebarModules.Count(m => m.Value.IsActivated);
+            ActiveModules = activeModules == 1 ? "1 active module" : $"{activeModules} active modules";
+        }
+
         public BindableCollection<INavigationItem> SidebarItems
         {
             get => _sidebarItems;
@@ -56,19 +73,35 @@ namespace Artemis.UI.Screens.Sidebar
             set => SetAndNotify(ref _sidebarModules, value);
         }
 
+        public string ActiveModules
+        {
+            get => _activeModules;
+            set => SetAndNotify(ref _activeModules, value);
+        }
+
         public IScreen SelectedItem
         {
             get => _selectedItem;
             set => SetAndNotify(ref _selectedItem, value);
         }
 
+        public bool IsSidebarOpen
+        {
+            get => _isSidebarOpen;
+            set
+            {
+                SetAndNotify(ref _isSidebarOpen, value);
+                if (value)
+                    ActiveModulesUpdateTimerOnElapsed(this, EventArgs.Empty);
+            }
+        }
+
         public void SetupSidebar()
         {
-           SidebarItems.Clear();
+            SidebarItems.Clear();
             SidebarModules.Clear();
 
             // Add all default sidebar items
-            SidebarItems.Add(new DividerNavigationItem());
             SidebarItems.Add(new FirstLevelNavigationItem {Icon = PackIconKind.Home, Label = "Home"});
             SidebarItems.Add(new FirstLevelNavigationItem {Icon = PackIconKind.Newspaper, Label = "News"});
             SidebarItems.Add(new FirstLevelNavigationItem {Icon = PackIconKind.TestTube, Label = "Workshop"});
@@ -83,7 +116,7 @@ namespace Artemis.UI.Screens.Sidebar
                 AddModule(module);
 
             // Select the top item, which will be one of the defaults
-            Task.Run(() => SelectSidebarItem(SidebarItems[1]));
+            Task.Run(() => SelectSidebarItem(SidebarItems[0]));
         }
 
         // ReSharper disable once UnusedMember.Global - Called by view
@@ -202,6 +235,9 @@ namespace Artemis.UI.Screens.Sidebar
 
             _pluginService.PluginEnabled -= PluginServiceOnPluginEnabled;
             _pluginService.PluginDisabled -= PluginServiceOnPluginDisabled;
+
+            _activeModulesUpdateTimer.Stop();
+            _activeModulesUpdateTimer.Elapsed -= ActiveModulesUpdateTimerOnElapsed;
         }
     }
 }