Merge OfficeViewer-Native plugin #1662

Repo URL: https://github.com/QL-Win/QuickLook.Plugin.OfficeViewer-Native

QuickLook.Plugin/QuickLook.Plugin.OfficeViewer/Plugin.cs

@@ -0,0 +1,115 @@
+// 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 QuickLook.Common.Plugin;
+using System;
+using System.IO;
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using UnblockZoneIdentifier;
+
+namespace QuickLook.Plugin.OfficeViewer;
+
+public class Plugin : IViewer
+{
+    private static readonly string[] Extensions =
+    [
+        ".doc", ".docx", ".docm",
+        ".xls", ".xlsx", ".xlsm", ".xlsb",
+        ".vsd", ".vsdx",
+        ".ppt", ".pptx",
+        ".odt", ".ods", ".odp"
+    ];
+
+    private PreviewPanel _panel;
+
+    public int Priority => -1;
+
+    public void Init()
+    {
+    }
+
+    public bool CanHandle(string path)
+    {
+        if (Directory.Exists(path))
+            return false;
+
+        if (Extensions.Any(path.ToLower().EndsWith))
+            return PreviewHandlerHost.GetPreviewHandlerGUID(path) != Guid.Empty;
+
+        return false;
+    }
+
+    public void Prepare(string path, ContextObject context)
+    {
+        context.SetPreferredSizeFit(new Size { Width = 1200, Height = 800 }, 0.8d);
+    }
+
+    public void View(string path, ContextObject context)
+    {
+        // MS Office interface does not allow loading of protected view (It's also possible that I haven't found a way)
+        // Therefore, we need to predict in advance and then let users choose whether to lift the protection
+        if (ZoneIdentifierManager.IsZoneBlocked(path))
+        {
+            context.Title = $"[PROTECTED VIEW] {Path.GetFileName(path)}";
+
+            MessageBoxResult result = MessageBox.Show(
+                """
+                Be careful - files from the Internet can contain viruses.
+                The Office interface prevents loading in Protected View.
+
+                Would you like OfficeViewer-Native to unblock the ZoneIdentifier of Internet?
+                """,
+                "PROTECTED VIEW",
+                MessageBoxButton.YesNo,
+                MessageBoxImage.Question
+            );
+
+            if (result == MessageBoxResult.Yes)
+            {
+                _ = ZoneIdentifierManager.UnblockZone(path);
+            }
+            else
+            {
+                context.ViewerContent = new Label()
+                {
+                    Content = "The Office interface prevents loading in Protected View.",
+                    VerticalAlignment = VerticalAlignment.Center,
+                    HorizontalAlignment = HorizontalAlignment.Center,
+                };
+                context.Title = $"[PROTECTED VIEW] {Path.GetFileName(path)}";
+                context.IsBusy = false;
+                return;
+            }
+        }
+
+        _panel = new PreviewPanel();
+        context.ViewerContent = _panel;
+        context.Title = Path.GetFileName(path);
+
+        _panel.PreviewFile(path, context);
+
+        context.IsBusy = false;
+    }
+
+    public void Cleanup()
+    {
+        _panel?.Dispose();
+        _panel = null;
+    }
+}