优化下载任务按钮

dotnet-campus · Dec 20, 2023 · 0af89fb · 0af89fb
1 parent 3945f72
commit 0af89fb
Show file tree

Hide file tree

Showing 2 changed files with 60 additions and 5 deletions.
diff --git a/...loader/UnoFileDownloader/UnoFileDownloader/Presentation/Converters/VisibilityConverter.cs b/...loader/UnoFileDownloader/UnoFileDownloader/Presentation/Converters/VisibilityConverter.cs
@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Microsoft.UI.Xaml.Data;
+
+namespace UnoFileDownloader.Presentation.Converters
+{
+    public class VisibilityConverter : IValueConverter
+    {
+        public Visibility DefaultVisibility { set; get; }
+
+        public bool? Visible { set; get; }
+
+        /// <summary>
+        /// 获取或设置 <see cref="Visibility.Collapsed"/> 所对应的值。
+        /// </summary>
+        public bool? Collapsed { get; set; }
+
+        public object Convert(object value, Type targetType, object parameter, string language)
+        {
+            if (Equals(value, Visible))
+            {
+                return Visibility.Visible;
+            }
+            if (Equals(value, Collapsed))
+            {
+                return Visibility.Collapsed;
+            }
+            return DefaultVisibility;
+        }
+
+        public object? ConvertBack(object value, Type targetType, object parameter, string language)
+        {
+            if (value == null)
+            {
+                throw new ArgumentNullException();
+            }
+            Visibility visibility = (Visibility) value;
+            switch (visibility)
+            {
+                case Visibility.Visible:
+                    return Visible;
+                case Visibility.Collapsed:
+                    return Collapsed;
+                default:
+                    throw new ArgumentException($"不支持指定值 {value} 的转换。");
+            }
+        }
+    }
+}
diff --git a/src/UnoFileDownloader/UnoFileDownloader/UnoFileDownloader/Presentation/MainPage.xaml b/src/UnoFileDownloader/UnoFileDownloader/UnoFileDownloader/Presentation/MainPage.xaml
@@ -9,6 +9,7 @@
       xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
       xmlns:models="using:UnoFileDownloader.Business.Models"
+      xmlns:converters="using:UnoFileDownloader.Presentation.Converters"
       mc:Ignorable="d"
       Background="{ThemeResource BackgroundBrush}" d:DataContext="{d:DesignInstance local:BindableMainModel}">
 
@@ -19,6 +20,7 @@
       <Setter Property="VerticalAlignment" Value="Stretch"></Setter>
       <Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
     </Style>
+    <converters:VisibilityConverter x:Key="CollapsedWhenFalse" Visible="True" Collapsed="False"/>
   </Page.Resources>
   <Grid>
     <Grid.RowDefinitions>
@@ -126,7 +128,7 @@
           <Setter Property="Padding" Value="1,0" />
           <Setter Property="Margin" Value="-1,0,-1,-1" />
           <Setter Property="BorderBrush" Value="Gray" />
-          <Setter Property="BorderThickness" Value="1" />
+          <Setter Property="BorderThickness" Value="0 0 0 1" />
         </Style>
       </ListView.ItemContainerStyle>
       <ListView.ItemTemplate>
@@ -146,8 +148,8 @@
                 <ColumnDefinition Width="100" />
                 <ColumnDefinition Width="100" />
                 <ColumnDefinition Width="200" />
-                <ColumnDefinition Width="Auto" />
-                <ColumnDefinition Width="Auto" />
+                <ColumnDefinition Width="50" />
+                <ColumnDefinition Width="50" />
               </Grid.ColumnDefinitions>
               <TextBlock
                 Grid.Column="0"
@@ -170,7 +172,7 @@
                 Grid.Column="5"
                 Style="{StaticResource TitleBarButtonStyle}"
                 AutomationProperties.Name="[Open Download Item File]"
-                >
+                Visibility="{Binding IsFinished,Converter={StaticResource CollapsedWhenFalse},Mode=OneWay}">
                 <Button.Content>
                   <SymbolIcon Symbol="OpenFile" />
                 </Button.Content>
@@ -180,7 +182,7 @@
                 Grid.Column="6"
                 Style="{StaticResource TitleBarButtonStyle}"
                 AutomationProperties.Name="[Open Contain Folder]"
-                >
+                Visibility="{Binding IsFinished,Converter={StaticResource CollapsedWhenFalse},Mode=OneWay}">
                 <Button.Content>
                   <SymbolIcon Symbol="Folder" />
                 </Button.Content>