refactor: using x:Int32 and x:String instead of custom types

src/Resources/Locales/zh_CN.axaml

@@ -197,7 +197,7 @@
   <x:String x:Key="Text.DiffWithMerger" xml:space="preserve">使用外部比对工具查看</x:String>
   <x:String x:Key="Text.Discard" xml:space="preserve">放弃更改确认</x:String>
   <x:String x:Key="Text.Discard.All" xml:space="preserve">所有本地址未提交的修改。</x:String>
-  <x:String x:Key="Text.Discard.Changes" xml:space="preserve">需要放弃的变更 ：</x:String>
+  <x:String x:Key="Text.Discard.Changes" xml:space="preserve">变更 ：</x:String>
   <x:String x:Key="Text.Discard.Total" xml:space="preserve">总计{0}项选中更改</x:String>
   <x:String x:Key="Text.Discard.Warning" xml:space="preserve">本操作不支持回退，请确认后继续！！！</x:String>
   <x:String x:Key="Text.EditRepositoryNode.Bookmark" xml:space="preserve">书签 ：</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -197,7 +197,7 @@
   <x:String x:Key="Text.DiffWithMerger" xml:space="preserve">使用外部比對工具檢視</x:String>
   <x:String x:Key="Text.Discard" xml:space="preserve">放棄更改確認</x:String>
   <x:String x:Key="Text.Discard.All" xml:space="preserve">所有本地址未提交的修改。</x:String>
-  <x:String x:Key="Text.Discard.Changes" xml:space="preserve">需要放棄的變更 ：</x:String>
+  <x:String x:Key="Text.Discard.Changes" xml:space="preserve">變更 ：</x:String>
   <x:String x:Key="Text.Discard.Total" xml:space="preserve">總計{0}項選中更改</x:String>
   <x:String x:Key="Text.Discard.Warning" xml:space="preserve">本操作不支援回退，請確認後繼續！！！</x:String>
   <x:String x:Key="Text.EditRepositoryNode.Bookmark" xml:space="preserve">書籤 ：</x:String>

src/ViewModels/Discard.cs

@@ -3,10 +3,6 @@ using System.Threading.Tasks;
 
 namespace SourceGit.ViewModels
 {
-    public class DiscardModeAll { }
-    public class DiscardModeSingle { public string File { get; set; } }
-    public class DiscardModeMulti { public int Count { get; set; } }
-
     public class Discard : Popup
     {
         public object Mode
@@ -19,7 +15,7 @@ namespace SourceGit.ViewModels
         {
             _repo = repo;
 
-            Mode = new DiscardModeAll();
+            Mode = null;
             View = new Views.Discard { DataContext = this };
         }
 
@@ -30,17 +26,11 @@ namespace SourceGit.ViewModels
             _isUnstaged = isUnstaged;
 
             if (_changes == null)
-            {
+                Mode = null;
-                Mode = new DiscardModeAll();
-            }
             else if (_changes.Count == 1)
-            {
+                Mode = _changes[0].Path;
-                Mode = new DiscardModeSingle() { File = _changes[0].Path };
-            }
             else
-            {
+                Mode = _changes.Count;
-                Mode = new DiscardModeMulti() { Count = _changes.Count };
-            }
 
             View = new Views.Discard() { DataContext = this };
         }

src/Views/Discard.axaml

@@ -12,28 +12,32 @@
                Classes="bold"
                Text="{DynamicResource Text.Discard}"/>
 
-    <Grid Margin="0,16,0,8" RowDefinitions="32,32" ColumnDefinitions="150,*">
+    <Grid Margin="0,16,0,8" RowDefinitions="32,32" ColumnDefinitions="120,*">
       <TextBlock Grid.Row="0" Grid.Column="0" Margin="0,0,8,0" HorizontalAlignment="Right" Text="{DynamicResource Text.Discard.Changes}"/>
-      <ContentControl Grid.Row="0" Grid.Column="1" Content="{Binding Mode}">
+      <ContentControl Grid.Row="0" Grid.Column="1">
+        <ContentControl.Content>
+          <Binding Path="Mode">
+            <Binding.TargetNullValue>
+              <StackPanel Orientation="Horizontal">
+                <Path Width="12" Height="12" Margin="0,2,0,0" Data="{StaticResource Icons.Folder.Open}"/>
+                <TextBlock Text="{DynamicResource Text.Discard.All}" Margin="4,0,0,0"/>
+              </StackPanel>
+            </Binding.TargetNullValue>
+          </Binding>
+        </ContentControl.Content>
+
         <ContentControl.DataTemplates>
-          <DataTemplate DataType="vm:DiscardModeAll">
+          <DataTemplate DataType="x:String">
             <StackPanel Orientation="Horizontal">
-              <Path Width="12" Height="12" Margin="0,2,0,0" Data="{StaticResource Icons.Folder.Open}"/>
+              <Path Width="12" Height="12" Data="{StaticResource Icons.File}"/>
-              <TextBlock Text="{DynamicResource Text.Discard.All}" Margin="4,0,0,0"/>
+              <TextBlock Text="{Binding}" Margin="4,0,0,0"/>
             </StackPanel>
           </DataTemplate>
 
-          <DataTemplate DataType="vm:DiscardModeSingle">
+          <DataTemplate DataType="x:Int32">
             <StackPanel Orientation="Horizontal">
               <Path Width="12" Height="12" Data="{StaticResource Icons.File}"/>
-              <TextBlock Text="{Binding File}" Margin="4,0,0,0"/>
+              <TextBlock Text="{Binding, Converter={x:Static c:StringConverters.FormatByResourceKey}, ConverterParameter='Discard.Total'}" Margin="4,0,0,0"/>
-            </StackPanel>
-          </DataTemplate>
-
-          <DataTemplate DataType="vm:DiscardModeMulti">
-            <StackPanel Orientation="Horizontal">
-              <Path Width="12" Height="12" Data="{StaticResource Icons.File}"/>
-              <TextBlock Text="{Binding Count, Converter={x:Static c:StringConverters.FormatByResourceKey}, ConverterParameter='Discard.Total'}" Margin="4,0,0,0"/>
             </StackPanel>
           </DataTemplate>
         </ContentControl.DataTemplates>