style<Window>: show progress bar in taskbar while popup is running

src/Views/Clone.xaml

@@ -12,6 +12,11 @@
     Title="{DynamicResource Text.Clone}" 
     Width="500" SizeToContent="Height"
     ResizeMode="NoResize">
+
+    <Window.TaskbarItemInfo>
+        <TaskbarItemInfo ProgressState="None"/>
+    </Window.TaskbarItemInfo>
+    
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="28"/>

src/Views/Clone.xaml.cs

@@ -4,6 +4,7 @@ using System.IO;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Shell;
 
 namespace SourceGit.Views {
 
@@ -35,6 +36,7 @@ namespace SourceGit.Views {
                 if (Validation.GetHasError(edit)) return;
             }
 
+            TaskbarItemInfo.ProgressState = TaskbarItemProgressState.Indeterminate;
             progress.Visibility = Visibility.Visible;
             processing.IsAnimating = true;
 
@@ -78,6 +80,7 @@ namespace SourceGit.Views {
                 return true;
             });
 
+            TaskbarItemInfo.ProgressState = TaskbarItemProgressState.None;
             progress.Visibility = Visibility.Collapsed;
             processing.IsAnimating = false;
             if (succ) {

src/Views/Launcher.xaml

@@ -16,6 +16,11 @@
     Height="{Binding Source={x:Static models:Preference.Instance}, Path=Window.Height, Mode=TwoWay}"
     WindowState="{Binding Source={x:Static models:Preference.Instance}, Path=Window.State, Mode=TwoWay}"
     Closing="OnClosing">
+
+    <Window.TaskbarItemInfo>
+        <TaskbarItemInfo ProgressState="None"/>
+    </Window.TaskbarItemInfo>
+    
     <Grid>
         <Grid.RowDefinitions>
             <RowDefinition Height="{Binding ElementName=me, Path=WindowState, Converter={StaticResource WindowStateToTitleBarHeight}}"/>

src/Views/Widgets/Dashboard.xaml.cs

@@ -10,6 +10,7 @@ using System.Windows.Controls.Primitives;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
+using System.Windows.Shell;
 
 namespace SourceGit.Views.Widgets {
 
@@ -154,14 +155,18 @@ namespace SourceGit.Views.Widgets {
             isPopupLocked = true;
             popupProgressMask.Visibility = Visibility.Visible;
             processing.IsAnimating = true;
+            App.Current.MainWindow.TaskbarItemInfo.ProgressState = TaskbarItemProgressState.Indeterminate;
 
             var task = curPopup.Start();
             if (task != null) {
                 var close = await task;
+                App.Current.MainWindow.TaskbarItemInfo.ProgressState = TaskbarItemProgressState.None;
                 if (close) {
                     ClosePopups(true);
                     return;
                 }
+            } else {
+                App.Current.MainWindow.TaskbarItemInfo.ProgressState = TaskbarItemProgressState.None;
             }
 
             isPopupLocked = false;