replace v6 with experimental v7 code

src/MpvNet.Windows/WPF/Controls/SearchControl.xaml.cs

@@ -0,0 +1,72 @@
+
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+using CommunityToolkit.Mvvm.Input;
+
+using MpvNet.Windows.UI;
+
+namespace MpvNet.Windows.WPF.Controls;
+
+public partial class SearchControl : UserControl
+{
+    string? _hintText;
+    bool _gotFocus;
+
+    public bool HideClearButton { get; set; }
+
+    public SearchControl() => InitializeComponent();
+
+    public Theme? Theme => Theme.Current;
+
+    public string HintText {
+        get => _hintText ??= "";
+        set {
+            _hintText = value;
+            UpdateControls();
+        }
+    }
+
+    [RelayCommand]
+    void Clear()
+    {
+        Text = "";
+        Keyboard.Focus(SearchTextBox);
+    }
+
+    void UpdateControls()
+    {
+        HintTextBlock.Text = Text == "" ? HintText : "";
+
+        if (Text == "" || HideClearButton)
+            SearchClearButton.Visibility = Visibility.Hidden;
+        else
+            SearchClearButton.Visibility = Visibility.Visible;
+    }
+
+    public string Text
+    {
+        get => (string)GetValue(TextProperty);
+        set => SetValue(TextProperty, value);
+    }
+
+    public static readonly DependencyProperty TextProperty =
+        DependencyProperty.Register("Text", typeof(string),
+            typeof(SearchControl), new PropertyMetadata(OnCustomerChangedCallBack));
+
+    static void OnCustomerChangedCallBack(
+        DependencyObject sender, DependencyPropertyChangedEventArgs e) =>
+            (sender as SearchControl)?.UpdateControls();
+
+    void SearchTextBox_GotFocus(object sender, RoutedEventArgs e) => _gotFocus = true;
+
+    void SearchTextBox_PreviewMouseUp(object sender, MouseButtonEventArgs e)
+    {
+        if (_gotFocus)
+        {
+            SearchTextBox?.SelectAll();
+            _gotFocus = false;
+        }
+    }
+}