Add BoolStateContentControl and demo

Author: emako

src/Wpf.Ui.Test/MainWindow.xaml

@@ -4120,6 +4120,35 @@
                         ButtonSpinner Demo
                         ══════════════════════════════════════════════════════════════
                     -->
+                    <!--  BoolStateContentControl  -->
+                    <StackPanel Margin="0,8,0,0">
+                        <TextBlock
+                            Margin="0,0,0,4"
+                            FontSize="16"
+                            FontWeight="SemiBold"
+                            Text="BoolStateContentControl" />
+                        <ui:StackPanel Orientation="Horizontal" Spacing="8">
+                            <CheckBox
+                                VerticalAlignment="Center"
+                                Content="BoolState Value"
+                                IsChecked="{Binding BoolStateDemoValue, Mode=TwoWay}" />
+                            <vio:BoolStateContentControl Value="{Binding BoolStateDemoValue}">
+                                <vio:BoolStateContentControl.TrueContent>
+                                    <ui:SymbolIcon
+                                        Filled="True"
+                                        Foreground="Green"
+                                        Symbol="CheckmarkCircle24" />
+                                </vio:BoolStateContentControl.TrueContent>
+                                <vio:BoolStateContentControl.FalseContent>
+                                    <ui:SymbolIcon
+                                        Filled="True"
+                                        Foreground="Red"
+                                        Symbol="DismissCircle24" />
+                                </vio:BoolStateContentControl.FalseContent>
+                            </vio:BoolStateContentControl>
+                        </ui:StackPanel>
+                    </StackPanel>
+
                     <!--  BoolStateTextBlock  -->
                     <StackPanel Margin="0,8,0,0">
                         <TextBlock

src/Wpf.Ui.Violeta/Controls/BoolStateContentControl/BoolStateContentControl.cs

@@ -0,0 +1,61 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Wpf.Ui.Violeta.Controls;
+
+public class BoolStateContentControl : ContentControl
+{
+    public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
+        nameof(Value),
+        typeof(bool),
+        typeof(BoolStateContentControl),
+        new PropertyMetadata(false, OnStateChanged));
+
+    public static readonly DependencyProperty TrueContentProperty = DependencyProperty.Register(
+        nameof(TrueContent),
+        typeof(object),
+        typeof(BoolStateContentControl),
+        new PropertyMetadata(null, OnStateChanged));
+
+    public static readonly DependencyProperty FalseContentProperty = DependencyProperty.Register(
+        nameof(FalseContent),
+        typeof(object),
+        typeof(BoolStateContentControl),
+        new PropertyMetadata(null, OnStateChanged));
+
+    public bool Value
+    {
+        get => (bool)GetValue(ValueProperty);
+        set => SetValue(ValueProperty, value);
+    }
+
+    public object? TrueContent
+    {
+        get => GetValue(TrueContentProperty);
+        set => SetValue(TrueContentProperty, value);
+    }
+
+    public object? FalseContent
+    {
+        get => GetValue(FalseContentProperty);
+        set => SetValue(FalseContentProperty, value);
+    }
+
+    public BoolStateContentControl()
+    {
+        UpdateContent();
+    }
+
+    private static void OnStateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+    {
+        if (d is BoolStateContentControl ctrl)
+        {
+            ctrl.UpdateContent();
+        }
+    }
+
+    private void UpdateContent()
+    {
+        SetCurrentValue(ContentProperty, Value ? TrueContent : FalseContent);
+    }
+}