修复处理内容包括公告 WebView、文件预览页、分享页兜底获取下载链接的隐藏 WebView。

lib/presentation/pages/preview/cloudreve_file_app_page.dart

@@ -1,11 +1,17 @@
 import 'dart:convert';
+import 'dart:io';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:webview_flutter/webview_flutter.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart' as desktop;
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
 
 import '../../../data/models/file_model.dart';
 import '../../../services/api_service.dart';
 
+bool get _useDesktopWebView =>
+    !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
 /// 完全交给 Cloudreve 官方 Web 前端处理文件打开。
 ///
 /// 这里不再自己读取 file_viewers，也不再自己创建 viewerSession。
@@ -26,7 +32,8 @@ class CloudreveFileAppPage extends StatefulWidget {
 }
 
 class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
-  late final WebViewController _controller;
+  mobile.WebViewController? _mobileController;
+  desktop.InAppWebViewController? _desktopController;
 
   bool _isPreparing = true;
   bool _sessionInjected = false;
@@ -40,11 +47,12 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
   void initState() {
     super.initState();
 
-    _controller = WebViewController()
+    if (!_useDesktopWebView) {
-      ..setJavaScriptMode(JavaScriptMode.unrestricted)
+      _mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
         ..setBackgroundColor(Colors.transparent)
         ..setNavigationDelegate(
-        NavigationDelegate(
+          mobile.NavigationDelegate(
             onProgress: (progress) {
               if (!mounted) return;
               setState(() => _progress = progress);
@@ -60,16 +68,26 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
             },
           ),
         );
+    }
 
     _prepareAndOpen();
   }
 
+  @override
+  void dispose() {
+    _desktopController?.dispose();
+    super.dispose();
+  }
+
   Future<void> _prepareAndOpen() async {
     setState(() {
       _isPreparing = true;
       _error = null;
       _progress = 0;
       _sessionInjected = false;
+      if (_useDesktopWebView) {
+        _desktopController = null;
+      }
     });
 
     try {
@@ -80,7 +98,7 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
 
       // 先打开同源页面，再注入 localStorage。
       // 这样 Cloudreve 官方前端可以直接复用 App 的 access_token。
-      await _controller.loadRequest(_originUri);
+      await _loadOrigin();
 
       if (!mounted) return;
       setState(() => _isPreparing = false);
@@ -105,7 +123,9 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
 
   Uri _buildCloudreveHomeUri() {
     final parent = _parentUri(widget.file.relativePath);
-    final openTarget = widget.file.id.isNotEmpty ? widget.file.id : widget.file.relativePath;
+    final openTarget = widget.file.id.isNotEmpty
+        ? widget.file.id
+        : widget.file.relativePath;
 
     return Uri(
       scheme: _originUri.scheme,
@@ -121,7 +141,9 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
   }
 
   String _parentUri(String uri) {
-    final normalized = uri.endsWith('/') ? uri.substring(0, uri.length - 1) : uri;
+    final normalized = uri.endsWith('/')
+        ? uri.substring(0, uri.length - 1)
+        : uri;
     final index = normalized.lastIndexOf('/');
     if (index <= 'cloudreve://my'.length) {
       return 'cloudreve://my';
@@ -138,7 +160,9 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
 
     Map<String, dynamic>? user;
     try {
-      final response = await ApiService.instance.get<Map<String, dynamic>>('/user/me');
+      final response = await ApiService.instance.get<Map<String, dynamic>>(
+        '/user/me',
+      );
       user = Map<String, dynamic>.from(response);
     } catch (_) {
       user = null;
@@ -181,15 +205,16 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
 
     try {
       if (sessionJson != null) {
-        final script = '''
+        final script =
+            '''
           try {
             localStorage.setItem('cloudreve_session', ${jsonEncode(sessionJson)});
           } catch (e) {}
           window.location.replace(${jsonEncode(target)});
         ''';
-        await _controller.runJavaScript(script);
+        await _runJavaScript(script);
       } else {
-        await _controller.loadRequest(_targetUri);
+        await _loadTarget();
       }
     } catch (e) {
       if (!mounted) return;
@@ -199,17 +224,52 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
 
   Future<void> _openTargetAgain() async {
     _sessionInjected = true;
-    await _controller.loadRequest(_targetUri);
+    await _loadTarget();
+  }
+
+  Future<void> _reloadWebView() async {
+    if (_useDesktopWebView) {
+      await _desktopController?.reload();
+    } else {
+      await _mobileController?.reload();
+    }
+  }
+
+  Future<void> _loadOrigin() async {
+    if (_useDesktopWebView) {
+      final controller = _desktopController;
+      if (controller == null) return;
+      await _desktopController?.loadUrl(
+        urlRequest: desktop.URLRequest(url: desktop.WebUri.uri(_originUri)),
+      );
+    } else {
+      await _mobileController!.loadRequest(_originUri);
+    }
+  }
+
+  Future<void> _loadTarget() async {
+    if (_useDesktopWebView) {
+      await _desktopController?.loadUrl(
+        urlRequest: desktop.URLRequest(url: desktop.WebUri.uri(_targetUri)),
+      );
+    } else {
+      await _mobileController!.loadRequest(_targetUri);
+    }
+  }
+
+  Future<void> _runJavaScript(String source) async {
+    if (_useDesktopWebView) {
+      await _desktopController?.evaluateJavascript(source: source);
+    } else {
+      await _mobileController!.runJavaScript(source);
+    }
   }
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text(
+        title: Text(widget.file.name, overflow: TextOverflow.ellipsis),
-          widget.file.name,
-          overflow: TextOverflow.ellipsis,
-        ),
         actions: [
           IconButton(
             tooltip: '重新打开',
@@ -219,7 +279,7 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
           IconButton(
             tooltip: '刷新',
             icon: const Icon(Icons.refresh),
-            onPressed: () => _controller.reload(),
+            onPressed: _reloadWebView,
           ),
         ],
         bottom: PreferredSize(
@@ -260,6 +320,32 @@ class _CloudreveFileAppPageState extends State<CloudreveFileAppPage> {
       );
     }
 
-    return WebViewWidget(controller: _controller);
+    if (_useDesktopWebView) {
+      return desktop.InAppWebView(
+        initialSettings: desktop.InAppWebViewSettings(
+          javaScriptEnabled: true,
+          domStorageEnabled: true,
+          transparentBackground: true,
+          supportZoom: false,
+        ),
+        onWebViewCreated: (controller) async {
+          _desktopController = controller;
+          if (!_isPreparing) {
+            await _loadOrigin();
+          }
+        },
+        onProgressChanged: (_, progress) {
+          if (!mounted) return;
+          setState(() => _progress = progress);
+        },
+        onLoadStop: (_, url) => _injectSessionAndOpenIfNeeded(),
+        onReceivedError: (_, request, error) {
+          if (!mounted || request.isForMainFrame != true) return;
+          setState(() => _error = '${error.type}: ${error.description}');
+        },
+      );
+    }
+
+    return mobile.WebViewWidget(controller: _mobileController!);
   }
 }

lib/presentation/pages/share/share_link_page.dart

@@ -1,11 +1,14 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart' as desktop;
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher.dart';
-import 'package:webview_flutter/webview_flutter.dart';
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
 
 import '../../../core/utils/app_logger.dart';
 import '../../../services/api_service.dart';
@@ -14,13 +17,13 @@ import '../../providers/download_manager_provider.dart';
 import '../../widgets/folder_picker.dart';
 import '../../widgets/user_avatar.dart';
 
+bool get _useDesktopWebView =>
+    !kIsWeb && (Platform.isWindows || Platform.isLinux);
+
 class ShareLinkPage extends StatefulWidget {
   final ShareLinkCandidate candidate;
 
-  const ShareLinkPage({
+  const ShareLinkPage({super.key, required this.candidate});
-    super.key,
-    required this.candidate,
-  });
 
   @override
   State<ShareLinkPage> createState() => _ShareLinkPageState();
@@ -49,7 +52,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     final baseUri = Uri.tryParse(ApiService.instance.dio.options.baseUrl);
     if (shareUri == null || baseUri == null) return false;
     final same = shareUri.host == baseUri.host;
-    AppLogger.d('ShareLinkPage _isSameOrigin: shareHost=${shareUri.host}, baseHost=${baseUri.host}, result=$same');
+    AppLogger.d(
+      'ShareLinkPage _isSameOrigin: shareHost=${shareUri.host}, baseHost=${baseUri.host}, result=$same',
+    );
     return same;
   }
 
@@ -165,8 +170,11 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
       final info = _info;
       if (!mounted) return;
       setState(() {
-        _singleFile = info == null ? null : ShareLinkService.instance.fileFromShareInfo(info);
+        _singleFile = info == null
-        _contextHint = _singleFile?.contextHint ?? _contextHint ?? info?.contextHint;
+            ? null
+            : ShareLinkService.instance.fileFromShareInfo(info);
+        _contextHint =
+            _singleFile?.contextHint ?? _contextHint ?? info?.contextHint;
         _fileError = null;
         _loadingFiles = false;
       });
@@ -280,9 +288,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
           return;
         } catch (downloadError) {
           if (!mounted) return;
-          ScaffoldMessenger.of(context).showSnackBar(
+          ScaffoldMessenger.of(
-            SnackBar(content: Text('创建下载任务失败：$downloadError')),
+            context,
-          );
+          ).showSnackBar(SnackBar(content: Text('创建下载任务失败：$downloadError')));
           return;
         }
       }
@@ -318,13 +326,10 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
 
     if (!mounted) return;
     ScaffoldMessenger.of(context).showSnackBar(
-      SnackBar(
+      SnackBar(content: Text(task == null ? '该文件已在下载队列中' : '已添加到下载队列，正在下载')),
-        content: Text(task == null ? '该文件已在下载队列中' : '已添加到下载队列，正在下载'),
-      ),
     );
   }
 
-
   Future<String?> _obtainDownloadUrlFromOfficialPage({
     required String fileName,
   }) async {
@@ -332,7 +337,7 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     if (shareUri == null) return null;
 
     final completer = Completer<String?>();
-    late final WebViewController controller;
+    mobile.WebViewController? mobileController;
     BuildContext? dialogContext;
     Timer? timeoutTimer;
 
@@ -341,8 +346,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
       completer.complete(url);
     }
 
-    controller = WebViewController()
+    if (!_useDesktopWebView) {
-      ..setJavaScriptMode(JavaScriptMode.unrestricted)
+      mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
         ..addJavaScriptChannel(
           'CloudreveDownloadBridge',
           onMessageReceived: (message) {
@@ -356,27 +362,29 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
           },
         )
         ..setNavigationDelegate(
-        NavigationDelegate(
+          mobile.NavigationDelegate(
             onPageFinished: (_) async {
-            await _installOfficialDownloadHook(controller);
+              await _installOfficialDownloadHookForMobile(mobileController!);
             },
             onNavigationRequest: (request) {
               final url = request.url;
               if (_looksLikeDirectDownloadUrl(url, shareUri: shareUri)) {
                 complete(url);
-              return NavigationDecision.prevent;
+                return mobile.NavigationDecision.prevent;
               }
-            return NavigationDecision.navigate;
+              return mobile.NavigationDecision.navigate;
             },
             onUrlChange: (change) {
               final url = change.url;
-            if (url != null && _looksLikeDirectDownloadUrl(url, shareUri: shareUri)) {
+              if (url != null &&
+                  _looksLikeDirectDownloadUrl(url, shareUri: shareUri)) {
                 complete(url);
               }
             },
           ),
         )
         ..loadRequest(shareUri);
+    }
 
     timeoutTimer = Timer(const Duration(seconds: 24), () => complete(null));
 
@@ -409,7 +417,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
               const SizedBox(height: 10),
               Text(
                 '不会自动跳转浏览器；浏览器入口只作为手动备用方案。',
-                style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
+                style: theme.textTheme.bodySmall?.copyWith(
+                  color: theme.hintColor,
+                ),
               ),
               const SizedBox(height: 1),
               SizedBox(
@@ -417,7 +427,32 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                 height: 1,
                 child: Opacity(
                   opacity: 0.01,
-                  child: WebViewWidget(controller: controller),
+                  child: _useDesktopWebView
+                      ? _OfficialDownloadDesktopWebView(
+                          shareUri: shareUri,
+                          onBridgeMessage: (message) {
+                            final url = _extractOfficialDownloadUrl(
+                              message,
+                              shareUri: shareUri,
+                            );
+                            if (url != null && url.isNotEmpty) {
+                              complete(url);
+                            }
+                          },
+                          onNavigationUrl: (url) {
+                            if (_looksLikeDirectDownloadUrl(
+                              url,
+                              shareUri: shareUri,
+                            )) {
+                              complete(url);
+                              return true;
+                            }
+                            return false;
+                          },
+                          buildHookScript: _officialDownloadHookScript,
+                          buildClickScript: _officialDownloadClickScript,
+                        )
+                      : mobile.WebViewWidget(controller: mobileController!),
                 ),
               ),
             ],
@@ -427,10 +462,7 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
               onPressed: () => complete(null),
               child: const Text('取消'),
             ),
-            TextButton(
+            TextButton(onPressed: _openExternal, child: const Text('浏览器打开')),
-              onPressed: _openExternal,
-              child: const Text('浏览器打开'),
-            ),
           ],
         );
       },
@@ -440,8 +472,18 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     return result;
   }
 
-  Future<void> _installOfficialDownloadHook(WebViewController controller) async {
+  Future<void> _installOfficialDownloadHookForMobile(
-    const hookScript = r"""
+    mobile.WebViewController controller,
+  ) async {
+    try {
+      await controller.runJavaScript(_officialDownloadHookScript);
+      await controller.runJavaScript(_officialDownloadClickScript);
+    } catch (_) {
+      // The outer flow times out and leaves the browser fallback available.
+    }
+  }
+
+  static const String _officialDownloadHookScript = r"""
 (function () {
   if (window.__cloudreveAppDownloadHookInstalled) return;
   window.__cloudreveAppDownloadHookInstalled = true;
@@ -449,7 +491,11 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
   function post(value) {
     try {
       if (typeof value !== 'string') value = JSON.stringify(value);
+      if (typeof CloudreveDownloadBridge !== 'undefined' && CloudreveDownloadBridge.postMessage) {
         CloudreveDownloadBridge.postMessage(value);
+      } else if (window.flutter_inappwebview && window.flutter_inappwebview.callHandler) {
+        window.flutter_inappwebview.callHandler('CloudreveDownloadBridge', value);
+      }
     } catch (e) {}
   }
 
@@ -521,7 +567,7 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
 })();
 """;
 
-    const clickScript = r"""
+  static const String _officialDownloadClickScript = r"""
 (function () {
   function visible(el) {
     if (!el) return false;
@@ -571,20 +617,13 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
 })();
 """;
 
-    try {
-      await controller.runJavaScript(hookScript);
-      await controller.runJavaScript(clickScript);
-    } catch (_) {
-      // 官方页面脚本注入失败时，外层会超时并保留“浏览器打开”。
-    }
-  }
-
   String? _extractOfficialDownloadUrl(String message, {required Uri shareUri}) {
     final text = message.trim();
     if (text.isEmpty) return null;
 
     final direct = _normalizeOfficialUrl(text, shareUri: shareUri);
-    if (direct != null && _looksLikeDirectDownloadUrl(direct, shareUri: shareUri)) {
+    if (direct != null &&
+        _looksLikeDirectDownloadUrl(direct, shareUri: shareUri)) {
       return direct;
     }
 
@@ -601,7 +640,8 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
 
     if (value is String) {
       final normalized = _normalizeOfficialUrl(value, shareUri: shareUri);
-      if (normalized != null && _looksLikeDirectDownloadUrl(normalized, shareUri: shareUri)) {
+      if (normalized != null &&
+          _looksLikeDirectDownloadUrl(normalized, shareUri: shareUri)) {
         return normalized;
       }
       return null;
@@ -618,8 +658,12 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     if (value is Map) {
       final navigationUrl = value['__navigation_url'];
       if (navigationUrl is String) {
-        final normalized = _normalizeOfficialUrl(navigationUrl, shareUri: shareUri);
+        final normalized = _normalizeOfficialUrl(
-        if (normalized != null && _looksLikeDirectDownloadUrl(normalized, shareUri: shareUri)) {
+          navigationUrl,
+          shareUri: shareUri,
+        );
+        if (normalized != null &&
+            _looksLikeDirectDownloadUrl(normalized, shareUri: shareUri)) {
           return normalized;
         }
       }
@@ -678,7 +722,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     final path = uri.path.toLowerCase();
 
     if (sameHost) {
-      if (path.startsWith('/s/') || path == '/home' || path.startsWith('/home/')) {
+      if (path.startsWith('/s/') ||
+          path == '/home' ||
+          path.startsWith('/home/')) {
         return false;
       }
       if (path.contains('/api/v4/file/url')) return false;
@@ -706,10 +752,8 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
 
     setState(() => _saving = true);
     try {
-      final isRootShareFolder = ShareLinkService.isShareRootUri(
+      final isRootShareFolder =
-            uri,
+          ShareLinkService.isShareRootUri(uri, shareId: widget.candidate.id) &&
-            shareId: widget.candidate.id,
-          ) &&
           _files.isNotEmpty;
       final urisToSave = isRootShareFolder
           ? _files
@@ -728,14 +772,14 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
       );
 
       if (!mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(
+      ScaffoldMessenger.of(
-        SnackBar(content: Text('已转存「$name」到 $destination')),
+        context,
-      );
+      ).showSnackBar(SnackBar(content: Text('已转存「$name」到 $destination')));
     } catch (e) {
       if (!mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(
+      ScaffoldMessenger.of(
-        SnackBar(content: Text('转存失败：$e')),
+        context,
-      );
+      ).showSnackBar(SnackBar(content: Text('转存失败：$e')));
     } finally {
       if (mounted) setState(() => _saving = false);
     }
@@ -760,9 +804,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
             children: [
               Text(
                 '选择转存位置',
-                style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                style: Theme.of(
-                      fontWeight: FontWeight.w800,
+                  context,
-                    ),
+                ).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w800),
               ),
               const SizedBox(height: 12),
               FolderPicker(
@@ -880,9 +924,8 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                         isDense: true,
                         border: OutlineInputBorder(),
                       ),
-                      onSubmitted: (_) => _loadShare(
+                      onSubmitted: (_) =>
-                        password: _passwordController.text.trim(),
+                          _loadShare(password: _passwordController.text.trim()),
-                      ),
                     ),
                   ),
                   const SizedBox(width: 10),
@@ -910,13 +953,18 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
         CircleAvatar(
           radius: 28,
           backgroundColor: theme.colorScheme.primaryContainer,
-          child: Icon(Icons.ios_share, color: theme.colorScheme.onPrimaryContainer),
+          child: Icon(
+            Icons.ios_share,
+            color: theme.colorScheme.onPrimaryContainer,
+          ),
         ),
         const SizedBox(width: 12),
         Expanded(
           child: Text(
             '分享链接',
-            style: theme.textTheme.titleMedium?.copyWith(fontWeight: FontWeight.w800),
+            style: theme.textTheme.titleMedium?.copyWith(
+              fontWeight: FontWeight.w800,
+            ),
           ),
         ),
       ],
@@ -933,11 +981,7 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
     return Row(
       children: [
         _isSameOrigin
-            ? UserAvatar(
+            ? UserAvatar(userId: ownerId, displayName: ownerName, radius: 29)
-                userId: ownerId,
-                displayName: ownerName,
-                radius: 29,
-              )
             : CircleAvatar(
                 radius: 29,
                 backgroundColor: theme.colorScheme.primaryContainer,
@@ -966,7 +1010,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
               const SizedBox(height: 4),
               Text(
                 '向您分享了 ${info.isFolder ? '一个文件夹' : '一个文件'}',
-                style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
+                style: theme.textTheme.bodySmall?.copyWith(
+                  color: theme.hintColor,
+                ),
               ),
             ],
           ),
@@ -974,7 +1020,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
         const SizedBox(width: 8),
         _StatusBadge(
           text: info.expired ? '已过期' : '有效',
-          color: info.expired ? theme.colorScheme.error : theme.colorScheme.primary,
+          color: info.expired
+              ? theme.colorScheme.error
+              : theme.colorScheme.primary,
         ),
       ],
     );
@@ -1009,7 +1057,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                   info.name,
                   maxLines: 2,
                   overflow: TextOverflow.ellipsis,
-                  style: theme.textTheme.titleSmall?.copyWith(fontWeight: FontWeight.w900),
+                  style: theme.textTheme.titleSmall?.copyWith(
+                    fontWeight: FontWeight.w900,
+                  ),
                 ),
               ),
             ],
@@ -1020,12 +1070,20 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
             runSpacing: 8,
             children: [
               _MetaChip(icon: LucideIcons.eye, text: '${info.visited} 次访问'),
-              if (sizeText != null) _MetaChip(icon: Icons.sd_storage_outlined, text: sizeText),
+              if (sizeText != null)
+                _MetaChip(icon: Icons.sd_storage_outlined, text: sizeText),
               if (info.createdAt != null)
-                _MetaChip(icon: LucideIcons.calendar, text: '${_formatDate(info.createdAt!)} 创建'),
+                _MetaChip(
+                  icon: LucideIcons.calendar,
+                  text: '${_formatDate(info.createdAt!)} 创建',
+                ),
               if (info.expires != null)
-                _MetaChip(icon: LucideIcons.clock, text: '${_formatDate(info.expires!)} 过期'),
+                _MetaChip(
-              if (info.isPrivate) const _MetaChip(icon: LucideIcons.lock, text: '私密分享'),
+                  icon: LucideIcons.clock,
+                  text: '${_formatDate(info.expires!)} 过期',
+                ),
+              if (info.isPrivate)
+                const _MetaChip(icon: LucideIcons.lock, text: '私密分享'),
             ],
           ),
         ],
@@ -1082,7 +1140,8 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
   }
 
   Widget _buildSingleFileCard(BuildContext context, ShareLinkInfo info) {
-    final file = _singleFile ?? ShareLinkService.instance.fileFromShareInfo(info);
+    final file =
+        _singleFile ?? ShareLinkService.instance.fileFromShareInfo(info);
     final sourceUri = (info.sourceUri?.trim().isNotEmpty == true)
         ? info.sourceUri
         : (file.path.trim().isNotEmpty ? file.path : null);
@@ -1108,17 +1167,15 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                         info.name,
                         maxLines: 3,
                         overflow: TextOverflow.ellipsis,
-                        style: Theme.of(context).textTheme.titleMedium?.copyWith(
+                        style: Theme.of(context).textTheme.titleMedium
-                              fontWeight: FontWeight.w900,
+                            ?.copyWith(fontWeight: FontWeight.w900),
-                            ),
                       ),
                       ...[
                         const SizedBox(height: 4),
                         Text(
                           '${file.size > 0 ? _ShareFileTile.formatSize(file.size) : '分享文件'}${file.updatedAt == null ? '' : ' · ${_formatDate(file.updatedAt!)}'}',
-                        style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                          style: Theme.of(context).textTheme.bodySmall
-                              color: Theme.of(context).hintColor,
+                              ?.copyWith(color: Theme.of(context).hintColor),
-                            ),
                         ),
                       ],
                     ],
@@ -1135,7 +1192,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
               _ErrorBox(
                 text: '文件详情读取失败，仍可尝试下载或转存：$_fileError',
                 actionText: sourceUri == null ? null : '重试',
-                onAction: sourceUri == null ? null : () => _loadSingleFile(sourceUri),
+                onAction: sourceUri == null
+                    ? null
+                    : () => _loadSingleFile(sourceUri),
               ),
             ],
             const SizedBox(height: 18),
@@ -1248,7 +1307,8 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
             subtitle: '这个分享目录下没有文件。',
           )
         else
-          ..._files.map((file) => _ShareFileTile(
+          ..._files.map(
+            (file) => _ShareFileTile(
               file: file,
               onTap: file.isFolder ? () => _enterFolder(file) : null,
               onDownload: file.isFile
@@ -1259,8 +1319,11 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                       entity: file.primaryEntity,
                     )
                   : null,
-                onSave: _isSameOrigin ? () => _saveSharedUri(file.path, name: file.name) : null,
+              onSave: _isSameOrigin
-              )),
+                  ? () => _saveSharedUri(file.path, name: file.name)
+                  : null,
+            ),
+          ),
       ],
     );
   }
@@ -1271,7 +1334,9 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
       margin: const EdgeInsets.only(bottom: 12),
       padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
       decoration: BoxDecoration(
-        color: theme.colorScheme.surfaceContainerHighest.withValues(alpha: 0.55),
+        color: theme.colorScheme.surfaceContainerHighest.withValues(
+          alpha: 0.55,
+        ),
         borderRadius: BorderRadius.circular(14),
       ),
       child: SingleChildScrollView(
@@ -1287,12 +1352,17 @@ class _ShareLinkPageState extends State<ShareLinkPage> {
                   onTap: isLast ? null : () => _jumpToBreadcrumb(index),
                   borderRadius: BorderRadius.circular(999),
                   child: Padding(
-                    padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 5),
+                    padding: const EdgeInsets.symmetric(
+                      horizontal: 8,
+                      vertical: 5,
+                    ),
                     child: Text(
                       item.title,
                       style: TextStyle(
                         fontWeight: isLast ? FontWeight.w800 : FontWeight.w500,
-                        color: isLast ? theme.colorScheme.primary : theme.hintColor,
+                        color: isLast
+                            ? theme.colorScheme.primary
+                            : theme.hintColor,
                       ),
                     ),
                   ),
@@ -1320,6 +1390,93 @@ class _ShareBreadcrumb {
   const _ShareBreadcrumb({required this.title, required this.uri});
 }
 
+class _OfficialDownloadDesktopWebView extends StatefulWidget {
+  final Uri shareUri;
+  final ValueChanged<String> onBridgeMessage;
+  final bool Function(String url) onNavigationUrl;
+  final String buildHookScript;
+  final String buildClickScript;
+
+  const _OfficialDownloadDesktopWebView({
+    required this.shareUri,
+    required this.onBridgeMessage,
+    required this.onNavigationUrl,
+    required this.buildHookScript,
+    required this.buildClickScript,
+  });
+
+  @override
+  State<_OfficialDownloadDesktopWebView> createState() =>
+      _OfficialDownloadDesktopWebViewState();
+}
+
+class _OfficialDownloadDesktopWebViewState
+    extends State<_OfficialDownloadDesktopWebView> {
+  desktop.InAppWebViewController? _controller;
+
+  @override
+  void dispose() {
+    _controller?.dispose();
+    super.dispose();
+  }
+
+  Future<void> _installHook() async {
+    final controller = _controller;
+    if (controller == null) return;
+    try {
+      await controller.evaluateJavascript(source: widget.buildHookScript);
+      await controller.evaluateJavascript(source: widget.buildClickScript);
+    } catch (_) {
+      // The parent dialog timeout keeps the manual browser fallback available.
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return desktop.InAppWebView(
+      initialUrlRequest: desktop.URLRequest(
+        url: desktop.WebUri.uri(widget.shareUri),
+      ),
+      initialSettings: desktop.InAppWebViewSettings(
+        javaScriptEnabled: true,
+        domStorageEnabled: true,
+        supportZoom: false,
+        transparentBackground: true,
+        useShouldOverrideUrlLoading: true,
+        useOnDownloadStart: true,
+      ),
+      onWebViewCreated: (controller) {
+        _controller = controller;
+        controller.addJavaScriptHandler(
+          handlerName: 'CloudreveDownloadBridge',
+          callback: (args) {
+            if (args.isNotEmpty) {
+              widget.onBridgeMessage(args.first.toString());
+            }
+          },
+        );
+      },
+      onLoadStop: (_, url) => _installHook(),
+      shouldOverrideUrlLoading: (_, action) {
+        final url = action.request.url?.toString();
+        if (url != null && widget.onNavigationUrl(url)) {
+          return desktop.NavigationActionPolicy.CANCEL;
+        }
+        return desktop.NavigationActionPolicy.ALLOW;
+      },
+      onUpdateVisitedHistory: (_, url, isReload) {
+        if (url != null) {
+          widget.onNavigationUrl(url.toString());
+        }
+      },
+      onDownloadStarting: (_, request) {
+        widget.onNavigationUrl(request.url.toString());
+        return null;
+      },
+    );
+  }
+}
+
 class _ShareFileTile extends StatelessWidget {
   final ShareLinkFile file;
   final VoidCallback? onTap;
@@ -1426,7 +1583,9 @@ class _ShareFileTile extends StatelessWidget {
       size /= 1024;
       unitIndex++;
     }
-    final text = unitIndex == 0 ? size.toStringAsFixed(0) : size.toStringAsFixed(1);
+    final text = unitIndex == 0
+        ? size.toStringAsFixed(0)
+        : size.toStringAsFixed(1);
     return '$text ${units[unitIndex]}';
   }
 
@@ -1440,10 +1599,7 @@ class _MetaChip extends StatelessWidget {
   final IconData icon;
   final String text;
 
-  const _MetaChip({
+  const _MetaChip({required this.icon, required this.text});
-    required this.icon,
-    required this.text,
-  });
 
   @override
   Widget build(BuildContext context) {
@@ -1498,11 +1654,7 @@ class _ErrorBox extends StatelessWidget {
   final String? actionText;
   final VoidCallback? onAction;
 
-  const _ErrorBox({
+  const _ErrorBox({required this.text, this.actionText, this.onAction});
-    required this.text,
-    this.actionText,
-    this.onAction,
-  });
 
   @override
   Widget build(BuildContext context) {
@@ -1525,10 +1677,7 @@ class _ErrorBox extends StatelessWidget {
             const SizedBox(height: 8),
             Align(
               alignment: Alignment.centerRight,
-              child: TextButton(
+              child: TextButton(onPressed: onAction, child: Text(actionText!)),
-                onPressed: onAction,
-                child: Text(actionText!),
-              ),
             ),
           ],
         ],
@@ -1573,16 +1722,11 @@ class _EmptyState extends StatelessWidget {
           Text(
             subtitle,
             textAlign: TextAlign.center,
-            style: theme.textTheme.bodySmall?.copyWith(
+            style: theme.textTheme.bodySmall?.copyWith(color: theme.hintColor),
-              color: theme.hintColor,
-            ),
           ),
           if (actionText != null && onAction != null) ...[
             const SizedBox(height: 14),
-            OutlinedButton(
+            OutlinedButton(onPressed: onAction, child: Text(actionText!)),
-              onPressed: onAction,
-              child: Text(actionText!),
-            ),
           ],
         ],
       ),

lib/presentation/widgets/announcement_dialog.dart

@@ -1,7 +1,13 @@
 import 'dart:convert';
+import 'dart:io';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:webview_flutter/webview_flutter.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart' as desktop;
+import 'package:webview_flutter/webview_flutter.dart' as mobile;
+
+bool get _useDesktopWebView =>
+    !kIsWeb && (Platform.isWindows || Platform.isLinux);
 
 class AnnouncementDialog extends StatefulWidget {
   final String title;
@@ -26,11 +32,8 @@ class AnnouncementDialog extends StatefulWidget {
     await showDialog<void>(
       context: context,
       barrierDismissible: true,
-      builder: (_) => AnnouncementDialog(
+      builder: (_) =>
-        title: title,
+          AnnouncementDialog(title: title, html: html, baseUrl: baseUrl),
-        html: html,
-        baseUrl: baseUrl,
-      ),
     );
   }
 
@@ -39,35 +42,39 @@ class AnnouncementDialog extends StatefulWidget {
 }
 
 class _AnnouncementDialogState extends State<AnnouncementDialog> {
-  late final WebViewController _controller;
+  mobile.WebViewController? _mobileController;
+  desktop.InAppWebViewController? _desktopController;
+  late final String _html;
+  late final String _baseUrl;
   bool _loading = true;
 
   @override
   void initState() {
     super.initState();
 
-    _controller = WebViewController()
+    final origin = Uri.parse(widget.baseUrl).origin;
-      ..setJavaScriptMode(JavaScriptMode.unrestricted)
+    _html = _wrapHtml(widget.html);
+    _baseUrl = '$origin/';
+
+    if (!_useDesktopWebView) {
+      _mobileController = mobile.WebViewController()
+        ..setJavaScriptMode(mobile.JavaScriptMode.unrestricted)
         ..setBackgroundColor(Colors.transparent)
         ..setNavigationDelegate(
-        NavigationDelegate(
+          mobile.NavigationDelegate(
             onPageFinished: (_) {
               if (mounted) setState(() => _loading = false);
             },
           ),
-      );
+        )
-
+        ..loadHtmlString(_html, baseUrl: _baseUrl);
-    _load();
+    }
   }
 
-  Future<void> _load() async {
+  @override
-    final origin = Uri.parse(widget.baseUrl).origin;
+  void dispose() {
-    final html = _wrapHtml(widget.html);
+    _desktopController?.dispose();
-
+    super.dispose();
-    await _controller.loadHtmlString(
-      html,
-      baseUrl: '$origin/',
-    );
   }
 
   String _wrapHtml(String body) {
@@ -162,7 +169,7 @@ $body
               Expanded(
                 child: Stack(
                   children: [
-                    WebViewWidget(controller: _controller),
+                    _buildWebView(),
                     if (_loading)
                       const Center(child: CircularProgressIndicator()),
                   ],
@@ -174,4 +181,29 @@ $body
       ),
     );
   }
+
+  Widget _buildWebView() {
+    if (_useDesktopWebView) {
+      return desktop.InAppWebView(
+        initialData: desktop.InAppWebViewInitialData(
+          data: _html,
+          baseUrl: desktop.WebUri(_baseUrl),
+        ),
+        initialSettings: desktop.InAppWebViewSettings(
+          javaScriptEnabled: true,
+          domStorageEnabled: true,
+          transparentBackground: true,
+          supportZoom: false,
+        ),
+        onWebViewCreated: (controller) {
+          _desktopController = controller;
+        },
+        onLoadStop: (_, url) {
+          if (mounted) setState(() => _loading = false);
+        },
+      );
+    }
+
+    return mobile.WebViewWidget(controller: _mobileController!);
+  }
 }

windows/CMakeLists.txt

@@ -32,19 +32,54 @@ set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
 # Use Unicode for all projects.
 add_definitions(-DUNICODE -D_UNICODE)
 
-# flutter_inappwebview_windows requires NuGet; help CMake find it
+# flutter_inappwebview_windows requires NuGet. The plugin's own CMake only
-if(NOT DEFINED NUGET OR NUGET STREQUAL "NUGET-NOTFOUND")
+# calls find_program(NUGET nuget), so seed the cache with an absolute path.
-  find_program(NUGET nuget PATHS
+if(DEFINED NUGET AND NOT NUGET STREQUAL "" AND NOT NUGET STREQUAL "NUGET-NOTFOUND")
-    "$ENV{USERPROFILE}\\.local\\bin"
+  if(NOT EXISTS "${NUGET}")
-    "$ENV{LOCALAPPDATA}\\Microsoft\\WinGet\\Links"
+    unset(NUGET CACHE)
-    "C:/ProgramData/chocolatey/bin"
+    unset(NUGET)
-    NO_DEFAULT_PATH
+  endif()
+endif()
+
+if(NOT DEFINED NUGET OR NUGET STREQUAL "" OR NUGET STREQUAL "NUGET-NOTFOUND")
+  set(_NUGET_CANDIDATES
+    "$ENV{SystemRoot}/System32/nuget.exe"
+    "$ENV{windir}/System32/nuget.exe"
+    "C:/Windows/System32/nuget.exe"
+    "$ENV{SystemRoot}/Sysnative/nuget.exe"
+    "$ENV{windir}/Sysnative/nuget.exe"
+    "C:/Windows/Sysnative/nuget.exe"
+    "$ENV{USERPROFILE}/.local/bin/nuget.exe"
+    "$ENV{LOCALAPPDATA}/Microsoft/WinGet/Links/nuget.exe"
+    "C:/ProgramData/chocolatey/bin/nuget.exe"
   )
-  find_program(NUGET nuget)
+  foreach(_NUGET_CANDIDATE IN LISTS _NUGET_CANDIDATES)
-  if(NUGET AND NOT NUGET STREQUAL "NUGET-NOTFOUND")
+    if(EXISTS "${_NUGET_CANDIDATE}")
+      set(NUGET "${_NUGET_CANDIDATE}")
+      break()
+    endif()
+  endforeach()
+endif()
+
+if(NOT DEFINED NUGET OR NUGET STREQUAL "" OR NUGET STREQUAL "NUGET-NOTFOUND")
+  find_program(NUGET NAMES nuget.exe nuget)
+endif()
+
+if(NUGET AND NOT NUGET STREQUAL "NUGET-NOTFOUND")
+  set(_PROJECT_NUGET "${CMAKE_BINARY_DIR}/nuget.exe")
+  execute_process(
+    COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${NUGET}" "${_PROJECT_NUGET}"
+    RESULT_VARIABLE _NUGET_COPY_RESULT
+  )
+  if(_NUGET_COPY_RESULT EQUAL 0 AND EXISTS "${_PROJECT_NUGET}")
+    set(NUGET "${_PROJECT_NUGET}")
+  else()
+    message(WARNING "Failed to copy NuGet to ${_PROJECT_NUGET}; using ${NUGET}")
+  endif()
   message(STATUS "Found NuGet: ${NUGET}")
   set(NUGET "${NUGET}" CACHE FILEPATH "nuget executable" FORCE)
-  endif()
+else()
+  message(WARNING "NuGet executable was not found. Windows WebView builds may fail.")
 endif()
 
 # Compilation settings that should be applied to most targets.
@@ -125,6 +160,12 @@ ENSURE_WINDOWS_ARCHIVE(
 
 # Generated plugin build rules, which manage building the plugins and adding
 # them to the application.
+if(POLICY CMP0175)
+  # flutter_inappwebview_windows 0.7.0-beta.3 passes DEPENDS to the TARGET
+  # form of add_custom_command. Keep older CMake behavior for plugins that do
+  # not set this policy themselves.
+  set(CMAKE_POLICY_DEFAULT_CMP0175 OLD)
+endif()
 include(flutter/generated_plugins.cmake)
 
 if(MSVC)