enhance: add a button to clear git.http.proxy configuration

Author: love-linger

src/ViewModels/RepositoryConfigure.cs

@@ -37,8 +37,8 @@ public string GPGUserSigningKey
 
         public string HttpProxy
         {
-            get;
-            set;
+            get => _httpProxy;
+            set => SetProperty(ref _httpProxy, value);
         }
 
         public RepositoryConfigure(Repository repo)
@@ -60,6 +60,11 @@ public RepositoryConfigure(Repository repo)
                 HttpProxy = proxy;
         }
 
+        public void ClearHttpProxy()
+        {
+            HttpProxy = string.Empty;
+        }
+
         public void Save()
         {
             SetIfChanged("user.name", UserName);
@@ -90,5 +95,6 @@ private void SetIfChanged(string key, string value)
 
         private readonly Repository _repo = null;
         private readonly Dictionary<string, string> _cached = null;
+        private string _httpProxy;
     }
 }

src/Views/RepositoryConfigure.axaml

@@ -77,7 +77,13 @@
                Height="28"
                CornerRadius="3"
                Watermark="{DynamicResource Text.Configure.Proxy.Placeholder}"
-               Text="{Binding HttpProxy, Mode=TwoWay}"/>
+               Text="{Binding HttpProxy, Mode=TwoWay}">
+        <TextBox.InnerRightContent>
+          <Button Classes="icon_button" IsVisible="{Binding HttpProxy, Converter={x:Static StringConverters.IsNotNullOrEmpty}}" Command="{Binding ClearHttpProxy}">
+            <Path Width="16" Height="16" Margin="0,0,0,0" Data="{StaticResource Icons.Clear}" Fill="{DynamicResource Brush.FG1}"/>
+          </Button>
+        </TextBox.InnerRightContent>
+      </TextBox>
 
       <TextBlock Grid.Row="3" Grid.Column="0"
                  HorizontalAlignment="Right" VerticalAlignment="Center"