add media removal

Azaion.Annotator/Annotator.xaml

@@ -177,6 +177,7 @@
                 <ListView.ContextMenu>
                     <ContextMenu Name="LvFilesContextMenu">
                         <MenuItem Header="Відкрити папку..." Click="OpenContainingFolder" Background="WhiteSmoke" />
+                        <MenuItem Header="Видалити..." Click="DeleteMedia" Background="WhiteSmoke" />
                     </ContextMenu>
                 </ListView.ContextMenu>
                 <ListView.View>

Azaion.Annotator/Annotator.xaml.cs

@@ -549,6 +549,28 @@ public partial class Annotator
     }
 
     #endregion
+
+    private void DeleteMedia(object sender, RoutedEventArgs e)
+    {
+        var mediaFileInfo = (sender as MenuItem)?.DataContext as MediaFileInfo;
+        if (mediaFileInfo == null)
+            return;
+        DeleteMedia(mediaFileInfo);
+    }
+
+    public void DeleteMedia(MediaFileInfo mediaFileInfo)
+    {
+        var obj = mediaFileInfo.MediaType == MediaTypes.Image
+            ? "цю картинку "
+            : "це відео ";
+        var result = MessageBox.Show($"Видалити {obj}?",
+            "Підтвердження видалення", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+        if (result != MessageBoxResult.Yes)
+            return;
+
+        File.Delete(mediaFileInfo.Path);
+        AllMediaFiles.Remove(mediaFileInfo);
+    }
 }
 
 public class GradientStyleSelector : StyleSelector

Azaion.Annotator/AnnotatorEventHandler.cs

@@ -1,5 +1,6 @@
 using System.IO;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
@@ -174,8 +175,15 @@ public class AnnotatorEventHandler(
                     await SaveAnnotation(cancellationToken);
                     break;
                 case PlaybackControlEnum.RemoveSelectedAnns:
-
-                    mainWindow.Editor.RemoveSelectedAnns();
+                    var focusedElement = FocusManager.GetFocusedElement(mainWindow);
+                    if (focusedElement is ListViewItem item)
+                    {
+                        if (item.DataContext is not MediaFileInfo mediaFileInfo)
+                            return;
+                        mainWindow.DeleteMedia(mediaFileInfo);
+                    }
+                    else
+                        mainWindow.Editor.RemoveSelectedAnns();
                     break;
                 case PlaybackControlEnum.RemoveAllAnns:
                     mainWindow.Editor.RemoveAllAnns();