Add ObjectToStringConverter and apply to AutomationProperties.Name bindings

Co-authored-by: Keboo <[email protected]>

Author: Copilot

src/MaterialDesignThemes.Wpf/Converters/ObjectToStringConverter.cs

@@ -0,0 +1,21 @@
+using System.Globalization;
+using System.Windows.Data;
+
+namespace MaterialDesignThemes.Wpf.Converters;
+
+public class ObjectToStringConverter : IValueConverter
+{
+    public static readonly ObjectToStringConverter Instance = new();
+
+    public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is string stringValue)
+        {
+            return stringValue;
+        }
+        return string.Empty;
+    }
+
+    public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+        => throw new NotImplementedException();
+}

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.AutoSuggestBox.xaml

@@ -23,7 +23,7 @@
       <converters:OutlinedStyleActiveBorderMarginCompensationConverter x:Key="OutlinedStyleActiveBorderMarginCompensationConverter" />
       <converters:ElevationRadiusConverter x:Key="ElevationRadiusConverter" Multiplier="-1" />
     </Style.Resources>
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="DropDownBackground" Value="{DynamicResource MaterialDesign.Brush.Card.Background}" />
     <Setter Property="DropDownElevation" Value="Dp2" />
     <Setter Property="Template">

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.ComboBox.xaml

@@ -884,7 +884,7 @@
   </ControlTemplate>
 
   <Style x:Key="MaterialDesignComboBox" TargetType="{x:Type ComboBox}">
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="Background" Value="Transparent" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ComboBox.Border}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.DatePicker.xaml

@@ -19,7 +19,7 @@
     <Style.Resources>
       <Style x:Key="NestedTextBoxStyle" TargetType="{x:Type DatePickerTextBox}" BasedOn="{StaticResource MaterialDesignTextBox}" />
     </Style.Resources>
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ForegroundLight}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />
     <Setter Property="CalendarStyle" Value="{StaticResource MaterialDesignDatePickerCalendarPortrait}" />

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.NumericUpDown.xaml

@@ -33,7 +33,7 @@
              TargetType="{x:Type ButtonBase}"
              BasedOn="{StaticResource MaterialDesignNumericUpDownButtonsStyle}" />
     </Style.Resources>
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ForegroundLight}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />
     <Setter Property="DecreaseContent" Value="{StaticResource ContentDecrease}" />

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.PasswordBox.xaml

@@ -51,7 +51,7 @@
       </Style>
     </Style.Resources>
     <Setter Property="AllowDrop" Value="true" />
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="Background" Value="Transparent" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ForegroundLight}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />
@@ -609,7 +609,7 @@
       </Style>
     </Style.Resources>
     <Setter Property="AllowDrop" Value="true" />
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="Background" Value="Transparent" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ForegroundLight}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TextBox.xaml

@@ -53,7 +53,7 @@
       <convertersInternal:TextBoxHorizontalScrollBarWidthConverter x:Key="TextBoxHorizontalScrollBarWidthConverter" />
     </Style.Resources>
 
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="AllowDrop" Value="true" />
     <Setter Property="Background" Value="Transparent" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.TextBox.Border}" />

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TimePicker.xaml

@@ -11,7 +11,7 @@
     <Style.Resources>
       <Style x:Key="NestedTextBoxStyle" TargetType="wpf:TimePickerTextBox" BasedOn="{StaticResource MaterialDesignTextBox}" />
     </Style.Resources>
-    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}}" />
+    <Setter Property="AutomationProperties.Name" Value="{Binding Path=(wpf:HintAssist.Hint), RelativeSource={RelativeSource Self}, Converter={x:Static converters:ObjectToStringConverter.Instance}}" />
     <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.ForegroundLight}" />
     <Setter Property="BorderThickness" Value="0,0,0,1" />
     <Setter Property="ClockHostContentControlStyle">