[Base64 Image] Click on save or view while no input made the app cras…

…hing (#529)
DevToys-app · May 18, 2022 · 829307b · 829307b
1 parent 9b13aad
commit 829307b
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/src/dev/impl/DevToys/UI/Controls/ImagePreview.xaml b/src/dev/impl/DevToys/UI/Controls/ImagePreview.xaml
@@ -1,15 +1,17 @@
 <UserControl
     x:Class="DevToys.UI.Controls.ImagePreview"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:controls="using:Microsoft.UI.Xaml.Controls"
+    xmlns:converters="using:DevToys.UI.Converters"
     mc:Ignorable="d"
     d:DesignHeight="300"
     d:DesignWidth="400"
     SizeChanged="UserControl_SizeChanged">
     <UserControl.Resources>
+        <converters:NullToVisibilityConverter x:Key="NonNullToVisibilityConverter" IsInverted="True"/>
+
         <Style x:Key="CardStyle" TargetType="Grid">
             <Setter Property="BorderBrush" Value="{ThemeResource ExpanderHeaderBorderBrush}" />
             <Setter Property="BorderThickness" Value="{ThemeResource ExpanderHeaderBorderThickness}" />
@@ -49,6 +51,7 @@
                 AutomationProperties.LabeledBy="{Binding ElementName=HeaderTextBlock}">
                 <Button
                     AutomationProperties.Name="View"
+                    Visibility="{x:Bind Source, Mode=OneWay, Converter={StaticResource NonNullToVisibilityConverter}}"
                     Click="ViewButton_Click">
                     <StackPanel Orientation="Horizontal" Spacing="4">
                         <FontIcon Glyph="&#xF3FB;"/>
@@ -58,12 +61,14 @@
                 <Button
                     ToolTipService.ToolTip="{Binding Instance.Common.Copy, Mode=OneTime, Source={StaticResource LanguageManager}}"
                     AutomationProperties.Name="{Binding Instance.Common.Copy, Mode=OneTime, Source={StaticResource LanguageManager}}"
+                    Visibility="{x:Bind Source, Mode=OneWay, Converter={StaticResource NonNullToVisibilityConverter}}"
                     Click="CopyButton_Click">
                     <FontIcon Glyph="&#xF32B;"/>
                 </Button>
                 <Button
                     ToolTipService.ToolTip="{Binding Instance.Common.SaveAs, Mode=OneTime, Source={StaticResource LanguageManager}}"
                     AutomationProperties.Name="{Binding Instance.Common.SaveAs, Mode=OneTime, Source={StaticResource LanguageManager}}"
+                    Visibility="{x:Bind Source, Mode=OneWay, Converter={StaticResource NonNullToVisibilityConverter}}"
                     Click="SaveAsButton_Click">
                     <FontIcon Glyph="&#xF67F;"/>
                 </Button>