Implement RecycleBinPanel #1610

2025-09-13 11:09:06 +00:00 · 2025-05-07 03:41:11 +08:00
parent a0a46832ed
commit e0f581e149
8 changed files with 199 additions and 16 deletions
--- a/QuickLook.Plugin/QuickLook.Plugin.CLSIDViewer/RecycleBinPanel.xaml.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.CLSIDViewer/RecycleBinPanel.xaml.cs
@@ -0,0 +1,105 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace QuickLook.Plugin.CLSIDViewer;
+
+public partial class RecycleBinPanel : UserControl
+{
+    public RecycleBinPanel()
+    {
+        InitializeComponent();
+        Loaded += OnRecycleBinPanelLoaded;
+    }
+
+    private void OnRecycleBinPanelLoaded(object sender, RoutedEventArgs e)
+    {
+        UpdateState();
+    }
+
+    private void OnEmptyRecycleBinClick(object sender, RoutedEventArgs e)
+    {
+        // TODO: Use async to avoid blocking the UI thread
+        if (RecycleBinHelper.EmptyRecycleBin())
+        {
+            UpdateState();
+        }
+    }
+
+    private void UpdateState()
+    {
+        bool hasTrash = RecycleBinHelper.HasTrash();
+
+        EmptyRecycleBinButton.Visibility = hasTrash ? Visibility.Visible : Visibility.Collapsed;
+        EmptyRecycleBinText.Visibility = hasTrash ? Visibility.Collapsed : Visibility.Visible;
+    }
+}
+
+file static class RecycleBinHelper
+{
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
+    public struct SHQUERYRBINFO
+    {
+        public uint cbSize;
+        public ulong i64Size;
+        public ulong i64NumItems;
+    }
+
+    [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
+    private static extern int SHQueryRecycleBin(string pszRootPath, ref SHQUERYRBINFO pSHQueryRBInfo);
+
+    [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
+    private static extern int SHEmptyRecycleBin(nint hwnd, string pszRootPath, RecycleFlags dwFlags);
+
+    [Flags]
+    private enum RecycleFlags : uint
+    {
+        SHERB_NOCONFIRMATION = 0x00000001,
+        SHERB_NOPROGRESSUI = 0x00000002,
+        SHERB_NOSOUND = 0x00000004,
+    }
+
+    public static bool HasTrash()
+    {
+        var info = new SHQUERYRBINFO()
+        {
+            cbSize = (uint)Marshal.SizeOf(typeof(SHQUERYRBINFO))
+        };
+
+        int result = SHQueryRecycleBin(null, ref info);
+        
+        if (result == 0) // S_OK
+        {
+            return info.i64NumItems > 0;
+        }
+
+        // Fallback
+        return false;
+    }
+
+    public static bool EmptyRecycleBin()
+    {
+        int result = SHEmptyRecycleBin(IntPtr.Zero, null,
+            RecycleFlags.SHERB_NOCONFIRMATION | RecycleFlags.SHERB_NOPROGRESSUI | RecycleFlags.SHERB_NOSOUND);
+
+        return result == 0;
+    }
+}