new folder structure and new C# script host

src/WPF/CommandPaletteWindow.xaml.cs

@@ -0,0 +1,125 @@
+
+using System;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Input;
+using System.Windows.Interop;
+
+using static mpvnet.Core;
+
+namespace mpvnet
+{
+    public partial class CommandPaletteWindow : Window
+    {
+        ICollectionView CollectionView;
+
+        public CommandPaletteWindow()
+        {
+            InitializeComponent();
+            CollectionViewSource collectionViewSource = new CollectionViewSource() { Source = CommandItem.Items };
+            CollectionView = collectionViewSource.View;
+            var yourCostumFilter = new Predicate<object>(item => Filter((CommandItem)item));
+            CollectionView.Filter = yourCostumFilter;
+            ListView.ItemsSource = CollectionView;
+        }
+
+        bool Filter(CommandItem item)
+        {
+            if (item.Command == "")
+                return false;
+
+            string filter = FilterTextBox.Text.ToLower();
+
+            if (filter == "")
+                return true;
+
+            if (item.Command.ToLower().Contains(filter) ||
+                item.Input.ToLower().Contains(filter) ||
+                item.Path.ToLower().Contains(filter))
+
+                return true;
+
+            return false;
+        }
+
+        void Window_Loaded(object sender, RoutedEventArgs e)
+        {
+            HwndSource source = HwndSource.FromHwnd(new WindowInteropHelper(this).Handle);
+            source.AddHook(new HwndSourceHook(WndProc));
+            Keyboard.Focus(FilterTextBox);
+            SelectFirst();
+        }
+
+        void SelectFirst()
+        {
+            if (ListView.Items.Count > 0)
+                ListView.SelectedIndex = 0;
+        }
+
+        IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+        {
+            if (msg == 0x200 /*WM_MOUSEMOVE*/ && Mouse.LeftButton != MouseButtonState.Pressed)
+                handled = true;
+
+            return IntPtr.Zero;
+        }
+
+        void FilterTextBox_PreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            switch (e.Key)
+            {
+                case Key.Up:
+                    {
+                        int index = ListView.SelectedIndex;
+                        index -= 1;
+
+                        if (index < 0)
+                            index = 0;
+
+                        ListView.SelectedIndex = index;
+                        ListView.ScrollIntoView(ListView.SelectedItem);
+                    }
+                    break;
+                case Key.Down:
+                    {
+                        int index = ListView.SelectedIndex;
+
+                        if (++index > ListView.Items.Count - 1)
+                            index = ListView.Items.Count - 1;
+
+                        ListView.SelectedIndex = index;
+                        ListView.ScrollIntoView(ListView.SelectedItem);
+                    }
+                    break;
+                case Key.Escape:
+                    Close();
+                    break;
+                case Key.Enter:
+                    Execute();
+                    break;
+            }
+        }
+
+        void Execute()
+        {
+            if (ListView.SelectedItem != null)
+            {
+                CommandItem item = ListView.SelectedItem as CommandItem;
+                Close();
+                core.command(item.Command);
+            }
+        }
+
+        void ListView_MouseUp(object sender, MouseButtonEventArgs e)
+        {
+            Execute();
+        }
+
+        void FilterTextBox_TextChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)
+        {
+            CollectionView.Refresh();
+            SelectFirst();
+        }
+    }
+}