fix & opt

- sftp download unknown spent time
- shareFiles return bool

lib/view/page/server/tab.dart

@@ -301,7 +301,7 @@ class _ServerPageState extends State<ServerPage>
       String? failedInfo) {
     switch (cs) {
       case ServerConnectionState.disconnected:
-        return 'Disconnected';
+        return s.disconnected;
       case ServerConnectionState.connected:
         if (temp == '') {
           if (upTime == '') {

lib/view/page/sftp/downloaded.dart

@@ -1,7 +1,6 @@
 import 'dart:io';
 
 import 'package:flutter/material.dart';
-import 'package:share_plus/share_plus.dart';
 import 'package:toolbox/core/extension/colorx.dart';
 import 'package:toolbox/core/extension/numx.dart';
 import 'package:toolbox/core/extension/stringx.dart';
@@ -173,8 +172,7 @@ class _SFTPDownloadedPageState extends State<SFTPDownloadedPage> {
                 leading: const Icon(Icons.open_in_new),
                 title: Text(s.open),
                 onTap: () {
-                  Share.shareFiles([file.absolute.path],
-                      text: '$fileName from ServerBox');
+                  shareFiles(context, [file.absolute.path]);
                 }),
           ],
         ),

lib/view/page/sftp/downloading.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:share_plus/share_plus.dart';
 import 'package:toolbox/core/extension/numx.dart';
 import 'package:toolbox/core/utils.dart';
 import 'package:toolbox/data/model/sftp/download_status.dart';
@@ -77,11 +76,11 @@ class _SFTPDownloadingPageState extends State<SFTPDownloadingPage> {
     }
     switch (status.status) {
       case SftpWorkerStatus.finished:
+        final time = status.spentTime.toString();
         return _wrapInCard(status,
-            '${s.downloadFinished} ${s.spentTime(status.spentTime ?? s.unknown)}',
+            '${s.downloadFinished} ${s.spentTime(time == 'null' ? s.unknown : (time.substring(0, time.length - 7)))}',
             trailing: IconButton(
-                onPressed: () => Share.shareFiles([status.item.localPath],
-                    text: '${status.fileName} from ServerBox'),
+                onPressed: () => shareFiles(context, [status.item.localPath]),
                 icon: const Icon(Icons.open_in_new)));
       case SftpWorkerStatus.downloading:
         return _wrapInCard(

lib/view/page/sftp/view.dart

@@ -195,7 +195,8 @@ class _SFTPPageState extends State<SFTPPage> {
   }
 
   void download(BuildContext context, SftpName name) {
-    showRoundDialog(context, s.download, Text(s.dl2Local(name.filename)), [
+    showRoundDialog(context, s.download,
+        Text('${s.dl2Local(name.filename)}\n${s.keepForeground}'), [
       TextButton(
           onPressed: () => Navigator.of(context).pop(), child: Text(s.cancel)),
       TextButton(