misc

src/WPF/CommandPaletteControl.xaml.cs

@@ -1,28 +1,140 @@
-using System;
+
+using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
-using System.Windows.Documents;
 using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
 
-namespace mpvnet.WPF
+namespace mpvnet
 {
-    /// <summary>
-    /// Interaction logic for CommandPaletteControl.xaml
-    /// </summary>
     public partial class CommandPaletteControl : UserControl
     {
+        public ICollectionView CollectionView { get; set; }
+        public ICommand EscapeCommand { get; }
+        public CollectionViewSource CollectionViewSource { get; }
+        public ObservableCollection<CommandPaletteItem> Items { get; } = new ObservableCollection<CommandPaletteItem>();
+
         public CommandPaletteControl()
         {
             InitializeComponent();
+            DataContext = this;
+            CollectionViewSource = new CollectionViewSource() { Source = Items };
+            CollectionView = CollectionViewSource.View;
+            CollectionView.Filter = new Predicate<object>(item => Filter((CommandPaletteItem)item));
+            MainListView.ItemsSource = CollectionView;
+
+            EscapeCommand = new RelayCommand(OnEscapeCommand);
+            SearchControl.SearchTextBox.PreviewKeyDown += SearchControl_PreviewKeyDown;
+            SearchControl.SearchTextBox.TextChanged += SearchTextBox_TextChanged;
+            SearchControl.SearchTextBox.BorderBrush = Theme.Background;
+            SearchControl.HideClearButton = true;
+        }
+
+        void SearchTextBox_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            CollectionView.Refresh();
+            SelectFirst();
+        }
+
+        void SearchControl_PreviewKeyDown(object sender, KeyEventArgs e)
+        {
+            switch (e.Key)
+            {
+                case Key.Up:
+                    {
+                        int index = MainListView.SelectedIndex;
+                        index -= 1;
+
+                        if (index < 0)
+                            index = 0;
+
+                        MainListView.SelectedIndex = index;
+                        MainListView.ScrollIntoView(MainListView.SelectedItem);
+                    }
+                    break;
+                case Key.Down:
+                    {
+                        int index = MainListView.SelectedIndex;
+
+                        if (++index > MainListView.Items.Count - 1)
+                            index = MainListView.Items.Count - 1;
+
+                        MainListView.SelectedIndex = index;
+                        MainListView.ScrollIntoView(MainListView.SelectedItem);
+                    }
+                    break;
+                case Key.Enter:
+                    Execute();
+                    break;
+            }
+        }
+
+        void OnEscapeCommand(object param)
+        {
+            MainForm.Instance.HideCommandPalette();
+        }
+
+        public Theme Theme => Theme.Current;
+
+        bool Filter(CommandPaletteItem item)
+        {
+            string filter = SearchControl.SearchTextBox.Text.ToLower();
+
+            if (filter == "" || item.Text.ToLower().Contains(filter) ||
+                item.SecondaryText.ToLower().Contains(filter))
+
+                return true;
+
+            return false;
+        }
+
+        public void SelectFirst()
+        {
+            if (MainListView.Items.Count > 0)
+                MainListView.SelectedIndex = 0;
+        }
+
+        void Execute()
+        {
+            if (MainListView.SelectedItem != null)
+            {
+                CommandPaletteItem item = MainListView.SelectedItem as CommandPaletteItem;
+                MainForm.Instance.HideCommandPalette();
+                item.Action.Invoke();
+            }
+        }
+
+        void OnLoaded(object sender, RoutedEventArgs e)
+        {
+            Keyboard.Focus(SearchControl.SearchTextBox);
+        }
+
+        public void SetItems(IEnumerable<CommandPaletteItem> items)
+        {
+            Items.Clear();
+
+            foreach (var i in items)
+                Items.Add(i);
+        }
+
+        void MainListView_SizeChanged(object sender, SizeChangedEventArgs e)
+        {
+            AdjustHeight();
+        }
+
+        public void AdjustHeight()
+        {
+            double actualHeight = SearchControl.ActualHeight + MainListView.ActualHeight;
+            int dpi = Native.GetDPI(MainForm.Instance.Handle);
+            MainForm.Instance.CommandPaletteHost.Height = (int)(actualHeight / 96.0 * dpi);
+        }
+
+        void MainListView_MouseUp(object sender, MouseButtonEventArgs e)
+        {
+            Execute();
         }
     }
 }