feat. & fix.

- support backup & restore
- fix when client.run empty return

lib/data/model/app/backup.dart

@@ -0,0 +1,52 @@
+import 'package:toolbox/data/model/server/private_key_info.dart';
+import 'package:toolbox/data/model/server/server_private_info.dart';
+import 'package:toolbox/data/model/server/snippet.dart';
+
+class Backup {
+  // backup format version
+  final int version;
+  final String date;
+  final List<ServerPrivateInfo> spis;
+  final List<Snippet> snippets;
+  final List<PrivateKeyInfo> keys;
+  final int primaryColor;
+  final int serverStatusUpdateInterval;
+  final int launchPage;
+
+  Backup(
+    this.version,
+    this.date,
+    this.spis,
+    this.snippets,
+    this.keys,
+    this.primaryColor,
+    this.serverStatusUpdateInterval,
+    this.launchPage,
+  );
+
+  Backup.fromJson(Map<String, dynamic> json)
+      : version = json['version'] as int,
+        date = json['date'],
+        spis = (json['spis'] as List)
+            .map((e) => ServerPrivateInfo.fromJson(e))
+            .toList(),
+        snippets =
+            (json['snippets'] as List).map((e) => Snippet.fromJson(e)).toList(),
+        keys = (json['keys'] as List)
+            .map((e) => PrivateKeyInfo.fromJson(e))
+            .toList(),
+        primaryColor = json['primaryColor'],
+        serverStatusUpdateInterval = json['serverStatusUpdateInterval'],
+        launchPage = json['launchPage'];
+
+  Map<String, dynamic> toJson() => {
+        'version': version,
+        'date': date,
+        'spis': spis,
+        'snippets': snippets,
+        'keys': keys,
+        'primaryColor': primaryColor,
+        'serverStatusUpdateInterval': serverStatusUpdateInterval,
+        'launchPage': launchPage,
+      };
+}

lib/data/provider/server.dart

@@ -193,6 +193,12 @@ class ServerProvider extends BusyProvider {
     final si = _servers[idx];
     if (si.client == null) return;
     final raw = await si.client!.run("sh $shellPath").string;
+    if (raw.isEmpty) {
+      _servers[idx].connectionState = ServerConnectionState.failed;
+      _servers[idx].status.failedInfo = 'Empty output';
+      notifyListeners();
+      return;
+    }
     final lines = raw.split(seperator).map((e) => e.trim()).toList();
     lines.removeAt(0);
 

lib/generated/intl/messages_en.dart

@@ -43,17 +43,19 @@ class MessageLookup extends MessageLookupByLibrary {
 
   static String m9(url) => "Please report bugs on ${url}";
 
-  static String m10(time) => "Spent time: ${time}";
+  static String m10(date) => "Are you sure to restore from ${date} ?";
 
-  static String m11(name) => "Are you sure to delete [${name}]?";
+  static String m11(time) => "Spent time: ${time}";
 
-  static String m12(server) => "Are you sure to delete server [${server}]?";
+  static String m12(name) => "Are you sure to delete [${name}]?";
 
-  static String m13(build) => "Found: v1.0.${build}, click to update";
+  static String m13(server) => "Are you sure to delete server [${server}]?";
 
-  static String m14(build) => "Current: v1.0.${build}";
+  static String m14(build) => "Found: v1.0.${build}, click to update";
 
-  static String m15(build) => "Current: v1.0.${build}, is up to date";
+  static String m15(build) => "Current: v1.0.${build}";
+
+  static String m16(build) => "Current: v1.0.${build}, is up to date";
 
   final messages = _notInlinedMessages(_notInlinedMessages);
   static Map<String, Function> _notInlinedMessages(_) => <String, Function>{
@@ -67,6 +69,11 @@ class MessageLookup extends MessageLookupByLibrary {
             MessageLookupByLibrary.simpleMessage("App primary color"),
         "attention": MessageLookupByLibrary.simpleMessage("Attention"),
         "backDir": MessageLookupByLibrary.simpleMessage("Back"),
+        "backup": MessageLookupByLibrary.simpleMessage("Backup"),
+        "backupTip": MessageLookupByLibrary.simpleMessage(
+            "The exported data is simply encrypted. \nPlease keep it safe.\nRestoring will not overwrite existing data (except setting)."),
+        "backupVersionNotMatch": MessageLookupByLibrary.simpleMessage(
+            "Backup version is not match."),
         "cancel": MessageLookupByLibrary.simpleMessage("Cancel"),
         "choose": MessageLookupByLibrary.simpleMessage("Choose"),
         "chooseDestination":
@@ -116,6 +123,7 @@ class MessageLookup extends MessageLookupByLibrary {
         "install": MessageLookupByLibrary.simpleMessage("install"),
         "installDockerWithUrl": MessageLookupByLibrary.simpleMessage(
             "Please https://docs.docker.com/engine/install docker first."),
+        "invalidJson": MessageLookupByLibrary.simpleMessage("Invalid JSON"),
         "invalidVersionHelp": m7,
         "keepForeground":
             MessageLookupByLibrary.simpleMessage("Keep app foreground!"),
@@ -163,6 +171,9 @@ class MessageLookup extends MessageLookupByLibrary {
         "pwd": MessageLookupByLibrary.simpleMessage("Password"),
         "rename": MessageLookupByLibrary.simpleMessage("Rename"),
         "reportBugsOnGithubIssue": m9,
+        "restoreSuccess": MessageLookupByLibrary.simpleMessage(
+            "Restore success. Restart app to apply."),
+        "restoreSureWithDate": m10,
         "result": MessageLookupByLibrary.simpleMessage("Result"),
         "run": MessageLookupByLibrary.simpleMessage("Run"),
         "save": MessageLookupByLibrary.simpleMessage("Save"),
@@ -186,11 +197,11 @@ class MessageLookup extends MessageLookupByLibrary {
         "sftpSSHConnected":
             MessageLookupByLibrary.simpleMessage("SFTP Connected"),
         "snippet": MessageLookupByLibrary.simpleMessage("Snippet"),
-        "spentTime": m10,
+        "spentTime": m11,
         "start": MessageLookupByLibrary.simpleMessage("Start"),
         "stop": MessageLookupByLibrary.simpleMessage("Stop"),
-        "sureDelete": m11,
-        "sureToDeleteServer": m12,
+        "sureDelete": m12,
+        "sureToDeleteServer": m13,
         "ttl": MessageLookupByLibrary.simpleMessage("TTL"),
         "unknown": MessageLookupByLibrary.simpleMessage("unknown"),
         "unknownError": MessageLookupByLibrary.simpleMessage("Unknown error"),
@@ -204,9 +215,9 @@ class MessageLookup extends MessageLookupByLibrary {
         "upsideDown": MessageLookupByLibrary.simpleMessage("Upside Down"),
         "urlOrJson": MessageLookupByLibrary.simpleMessage("URL or JSON"),
         "user": MessageLookupByLibrary.simpleMessage("User"),
-        "versionHaveUpdate": m13,
-        "versionUnknownUpdate": m14,
-        "versionUpdated": m15,
+        "versionHaveUpdate": m14,
+        "versionUnknownUpdate": m15,
+        "versionUpdated": m16,
         "waitConnection": MessageLookupByLibrary.simpleMessage(
             "Please wait for the connection to be established."),
         "willTakEeffectImmediately":

lib/generated/intl/messages_zh.dart

@@ -43,17 +43,19 @@ class MessageLookup extends MessageLookupByLibrary {
 
   static String m9(url) => "请到 ${url} 提交问题";
 
-  static String m10(time) => "耗时: ${time}";
+  static String m10(date) => "确定恢复 ${date} 的备份吗？";
 
-  static String m11(name) => "确定删除[${name}]？";
+  static String m11(time) => "耗时: ${time}";
 
-  static String m12(server) => "你确定要删除服务器 [${server}] 吗？";
+  static String m12(name) => "确定删除[${name}]？";
 
-  static String m13(build) => "找到新版本：v1.0.${build}, 点击更新";
+  static String m13(server) => "你确定要删除服务器 [${server}] 吗？";
 
-  static String m14(build) => "当前：v1.0.${build}";
+  static String m14(build) => "找到新版本：v1.0.${build}, 点击更新";
 
-  static String m15(build) => "当前：v1.0.${build}, 已是最新版本";
+  static String m15(build) => "当前：v1.0.${build}";
+
+  static String m16(build) => "当前：v1.0.${build}, 已是最新版本";
 
   final messages = _notInlinedMessages(_notInlinedMessages);
   static Map<String, Function> _notInlinedMessages(_) => <String, Function>{
@@ -64,6 +66,11 @@ class MessageLookup extends MessageLookupByLibrary {
         "appPrimaryColor": MessageLookupByLibrary.simpleMessage("App主要色"),
         "attention": MessageLookupByLibrary.simpleMessage("注意"),
         "backDir": MessageLookupByLibrary.simpleMessage("返回上一级"),
+        "backup": MessageLookupByLibrary.simpleMessage("备份"),
+        "backupTip": MessageLookupByLibrary.simpleMessage(
+            "导出的数据仅进行了简单加密，请妥善保管。\n恢复的数据（除了设置）不会覆盖现有数据。"),
+        "backupVersionNotMatch":
+            MessageLookupByLibrary.simpleMessage("备份版本不匹配，无法恢复"),
         "cancel": MessageLookupByLibrary.simpleMessage("取消"),
         "choose": MessageLookupByLibrary.simpleMessage("选择"),
         "chooseDestination": MessageLookupByLibrary.simpleMessage("选择目标"),
@@ -105,6 +112,7 @@ class MessageLookup extends MessageLookupByLibrary {
         "install": MessageLookupByLibrary.simpleMessage("安装"),
         "installDockerWithUrl": MessageLookupByLibrary.simpleMessage(
             "请先 https://docs.docker.com/engine/install docker"),
+        "invalidJson": MessageLookupByLibrary.simpleMessage("无效的json，存在格式问题"),
         "invalidVersionHelp": m7,
         "keepForeground": MessageLookupByLibrary.simpleMessage("请保持应用处于前台！"),
         "keyAuth": MessageLookupByLibrary.simpleMessage("公钥认证"),
@@ -142,6 +150,9 @@ class MessageLookup extends MessageLookupByLibrary {
         "pwd": MessageLookupByLibrary.simpleMessage("密码"),
         "rename": MessageLookupByLibrary.simpleMessage("重命名"),
         "reportBugsOnGithubIssue": m9,
+        "restoreSuccess":
+            MessageLookupByLibrary.simpleMessage("恢复成功，需要重启App来应用更改"),
+        "restoreSureWithDate": m10,
         "result": MessageLookupByLibrary.simpleMessage("结果"),
         "run": MessageLookupByLibrary.simpleMessage("运行"),
         "save": MessageLookupByLibrary.simpleMessage("保存"),
@@ -160,11 +171,11 @@ class MessageLookup extends MessageLookupByLibrary {
         "sftpSSHConnected":
             MessageLookupByLibrary.simpleMessage("SFTP 已连接，即将开始下载..."),
         "snippet": MessageLookupByLibrary.simpleMessage("代码片段"),
-        "spentTime": m10,
+        "spentTime": m11,
         "start": MessageLookupByLibrary.simpleMessage("开始"),
         "stop": MessageLookupByLibrary.simpleMessage("停止"),
-        "sureDelete": m11,
-        "sureToDeleteServer": m12,
+        "sureDelete": m12,
+        "sureToDeleteServer": m13,
         "ttl": MessageLookupByLibrary.simpleMessage("缓存时间"),
         "unknown": MessageLookupByLibrary.simpleMessage("未知"),
         "unknownError": MessageLookupByLibrary.simpleMessage("未知错误"),
@@ -177,9 +188,9 @@ class MessageLookup extends MessageLookupByLibrary {
         "upsideDown": MessageLookupByLibrary.simpleMessage("上下交换"),
         "urlOrJson": MessageLookupByLibrary.simpleMessage("链接或JSON"),
         "user": MessageLookupByLibrary.simpleMessage("用户"),
-        "versionHaveUpdate": m13,
-        "versionUnknownUpdate": m14,
-        "versionUpdated": m15,
+        "versionHaveUpdate": m14,
+        "versionUnknownUpdate": m15,
+        "versionUpdated": m16,
         "waitConnection": MessageLookupByLibrary.simpleMessage("请等待连接建立"),
         "willTakEeffectImmediately":
             MessageLookupByLibrary.simpleMessage("更改将会立即生效")

lib/generated/l10n.dart

@@ -1230,6 +1230,66 @@ class S {
       args: [],
     );
   }
+
+  /// `The exported data is simply encrypted. \nPlease keep it safe.\nRestoring will not overwrite existing data (except setting).`
+  String get backupTip {
+    return Intl.message(
+      'The exported data is simply encrypted. \nPlease keep it safe.\nRestoring will not overwrite existing data (except setting).',
+      name: 'backupTip',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Backup`
+  String get backup {
+    return Intl.message(
+      'Backup',
+      name: 'backup',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Are you sure to restore from {date} ?`
+  String restoreSureWithDate(Object date) {
+    return Intl.message(
+      'Are you sure to restore from $date ?',
+      name: 'restoreSureWithDate',
+      desc: '',
+      args: [date],
+    );
+  }
+
+  /// `Backup version is not match.`
+  String get backupVersionNotMatch {
+    return Intl.message(
+      'Backup version is not match.',
+      name: 'backupVersionNotMatch',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Invalid JSON`
+  String get invalidJson {
+    return Intl.message(
+      'Invalid JSON',
+      name: 'invalidJson',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Restore success. Restart app to apply.`
+  String get restoreSuccess {
+    return Intl.message(
+      'Restore success. Restart app to apply.',
+      name: 'restoreSuccess',
+      desc: '',
+      args: [],
+    );
+  }
 }
 
 class AppLocalizationDelegate extends LocalizationsDelegate<S> {

lib/l10n/intl_en.arb

@@ -116,5 +116,11 @@
     "invalidVersionHelp": "Please make sure that docker is installed correctly, or that you are using a non-self-compiled version. If you don't have the above issues, please submit an issue on {url}.",
     "noInterface": "No interface",
     "lastTry": "Last try!",
-    "pingNoServer": "No server to ping.\nPlease add a server in server tab."
+    "pingNoServer": "No server to ping.\nPlease add a server in server tab.",
+    "backupTip": "The exported data is simply encrypted. \nPlease keep it safe.\nRestoring will not overwrite existing data (except setting).",
+    "backup": "Backup",
+    "restoreSureWithDate": "Are you sure to restore from {date} ?",
+    "backupVersionNotMatch": "Backup version is not match.",
+    "invalidJson": "Invalid JSON",
+    "restoreSuccess": "Restore success. Restart app to apply."
 }

lib/l10n/intl_zh.arb

@@ -116,5 +116,11 @@
     "invalidVersionHelp": "请确保正确安装了docker，或者使用的非自编译版本。如果没有以上问题，请在 {url} 提交问题。",
     "noInterface": "没有可用的接口",
     "lastTry": "最后尝试",
-    "pingNoServer": "没有服务器可用于Ping\n请在服务器tab添加服务器后再试"
+    "pingNoServer": "没有服务器可用于Ping\n请在服务器tab添加服务器后再试",
+    "backupTip": "导出的数据仅进行了简单加密，请妥善保管。\n恢复的数据（除了设置）不会覆盖现有数据。",
+    "backup": "备份",
+    "restoreSureWithDate": "确定恢复 {date} 的备份吗？",
+    "backupVersionNotMatch": "备份版本不匹配，无法恢复",
+    "invalidJson": "无效的json，存在格式问题",
+    "restoreSuccess": "恢复成功，需要重启App来应用更改"
 }

lib/view/page/backup.dart

@@ -0,0 +1,201 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:toolbox/core/utils.dart';
+import 'package:toolbox/data/model/app/backup.dart';
+import 'package:toolbox/data/res/font_style.dart';
+import 'package:toolbox/data/store/private_key.dart';
+import 'package:toolbox/data/store/server.dart';
+import 'package:toolbox/data/store/setting.dart';
+import 'package:toolbox/data/store/snippet.dart';
+import 'package:toolbox/generated/l10n.dart';
+import 'package:toolbox/locator.dart';
+import 'package:toolbox/view/widget/round_rect_card.dart';
+
+const backupFormatVersion = 1;
+
+class BackupPage extends StatelessWidget {
+  BackupPage({Key? key}) : super(key: key);
+
+  final setting = locator<SettingStore>();
+  final server = locator<ServerStore>();
+  final snippet = locator<SnippetStore>();
+  final privateKey = locator<PrivateKeyStore>();
+
+  @override
+  Widget build(BuildContext context) {
+    final media = MediaQuery.of(context);
+    final s = S.of(context);
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(s.importAndExport, style: size18),
+      ),
+      body: Center(
+          child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          Padding(
+            padding: const EdgeInsets.all(37),
+            child: Text(
+              s.backupTip,
+              textAlign: TextAlign.center,
+            ),
+          ),
+          const SizedBox(
+            height: 77,
+          ),
+          _buildCard(s.import, Icons.download, media,
+              () => _showImportDialog(context, s)),
+          _buildCard(s.export, Icons.file_upload, media,
+              () => _showExportDialog(context, s))
+        ],
+      )),
+    );
+  }
+
+  Widget _buildCard(String text, IconData icon, MediaQueryData media,
+      FutureOr Function() onTap) {
+    return RoundRectCard(InkWell(
+        onTap: onTap,
+        child: SizedBox(
+          width: media.size.width * 0.77,
+          height: media.size.height * 0.17,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Icon(icon, size: media.size.height * 0.05),
+              const SizedBox(height: 10),
+              Text(text, style: TextStyle(fontSize: media.size.height * 0.02)),
+            ],
+          ),
+        )));
+  }
+
+  Future<void> _showExportDialog(BuildContext context, S s) async {
+    final exportFieldController = TextEditingController()
+      ..text = _diyEncrtpt(json.encode(Backup(
+        backupFormatVersion,
+        DateTime.now().toString().split('.').first,
+        server.fetch(),
+        snippet.fetch(),
+        privateKey.fetch(),
+        setting.primaryColor.fetch() ?? Colors.pinkAccent.value,
+        setting.serverStatusUpdateInterval.fetch() ?? 2,
+        setting.launchPage.fetch() ?? 0,
+      )));
+    await showRoundDialog(
+        context,
+        s.export,
+        TextField(
+          decoration: const InputDecoration(
+            labelText: 'JSON',
+          ),
+          maxLines: 7,
+          controller: exportFieldController,
+        ),
+        [
+          TextButton(
+            child: Text(s.copy),
+            onPressed: () {
+              Clipboard.setData(
+                  ClipboardData(text: exportFieldController.text));
+              Navigator.pop(context);
+            },
+          ),
+        ]);
+  }
+
+  Future<void> _showImportDialog(BuildContext context, S s) async {
+    final importFieldController = TextEditingController();
+    await showRoundDialog(
+        context,
+        s.import,
+        TextField(
+          decoration: const InputDecoration(
+            labelText: 'JSON',
+          ),
+          maxLines: 3,
+          controller: importFieldController,
+        ),
+        [
+          TextButton(
+              onPressed: () => Navigator.of(context).pop(),
+              child: Text(s.cancel)),
+          TextButton(
+            onPressed: () async =>
+                await _import(importFieldController.text.trim(), context, s),
+            child: const Text('GO'),
+          )
+        ]);
+  }
+
+  Future<void> _import(String text, BuildContext context, S s) async {
+    if (text.isEmpty) {
+      showSnackBar(context, Text(s.fieldMustNotEmpty));
+      return;
+    }
+    _importBackup(text, context, s);
+    Navigator.of(context).pop();
+  }
+
+  Future<void> _importBackup(String raw, BuildContext context, S s) async {
+    try {
+      final backup = await compute(_decode, raw);
+      if (backupFormatVersion != backup.version) {
+        showSnackBar(context, Text(s.backupVersionNotMatch));
+        return;
+      }
+
+      await showRoundDialog(
+          context, s.attention, Text(s.restoreSureWithDate(backup.date)), [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(),
+          child: Text(s.cancel),
+        ),
+        TextButton(
+          onPressed: () async {
+            for (final s in backup.snippets) {
+              snippet.put(s);
+            }
+            for (final s in backup.spis) {
+              server.put(s);
+            }
+            for (final s in backup.keys) {
+              privateKey.put(s);
+            }
+            setting.primaryColor.put(backup.primaryColor);
+            setting.serverStatusUpdateInterval
+                .put(backup.serverStatusUpdateInterval);
+            setting.launchPage.put(backup.launchPage);
+            Navigator.of(context).pop();
+            showSnackBar(context, Text(s.restoreSuccess));
+          },
+          child: Text(s.ok),
+        ),
+      ]);
+    } catch (e) {
+      showSnackBar(context, Text(s.invalidJson));
+      return;
+    }
+  }
+}
+
+Backup _decode(String raw) {
+  final decrypted = _diyDecrypt(raw);
+  return Backup.fromJson(json.decode(decrypted));
+}
+
+String _diyEncrtpt(String raw) =>
+    json.encode(raw.codeUnits.map((e) => e * 2 + 1).toList(growable: false));
+String _diyDecrypt(String raw) {
+  final list = json.decode(raw);
+  final sb = StringBuffer();
+  for (final e in list) {
+    sb.writeCharCode((e - 1) ~/ 2);
+  }
+  return sb.toString();
+}

lib/view/page/home.dart

@@ -18,6 +18,7 @@ import 'package:toolbox/data/res/url.dart';
 import 'package:toolbox/data/store/setting.dart';
 import 'package:toolbox/generated/l10n.dart';
 import 'package:toolbox/locator.dart';
+import 'package:toolbox/view/page/backup.dart';
 import 'package:toolbox/view/page/convert.dart';
 import 'package:toolbox/view/page/debug.dart';
 import 'package:toolbox/view/page/ping.dart';
@@ -240,6 +241,12 @@ class _MyHomePageState extends State<MyHomePage>
                       AppRoute(const SFTPDownloadedPage(), 'snippet list')
                           .go(context),
                 ),
+                ListTile(
+                  leading: const Icon(Icons.import_export),
+                  title: Text(s.backup),
+                  onTap: () =>
+                      AppRoute(BackupPage(), 'backup page').go(context),
+                ),
                 ListTile(
                   leading: const Icon(Icons.snippet_folder),
                   title: Text(s.snippet),

lib/view/page/snippet/list.dart

@@ -1,4 +1,3 @@
-import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:toolbox/core/route.dart';
@@ -26,9 +25,6 @@ class SnippetListPage extends StatefulWidget {
 class _SnippetListPageState extends State<SnippetListPage> {
   late ServerPrivateInfo _selectedIndex;
 
-  final _importFieldController = TextEditingController();
-  final _exportFieldController = TextEditingController();
-
   final _textStyle = TextStyle(color: primaryColor);
 
   late S s;
@@ -44,12 +40,6 @@ class _SnippetListPageState extends State<SnippetListPage> {
     return Scaffold(
       appBar: AppBar(
         title: Text(s.snippet, style: size18),
-        actions: [
-          IconButton(
-              onPressed: () => _showImportExport(),
-              tooltip: s.importAndExport,
-              icon: const Icon(Icons.import_export)),
-        ],
       ),
       body: _buildBody(),
       floatingActionButton: FloatingActionButton(
@@ -60,97 +50,6 @@ class _SnippetListPageState extends State<SnippetListPage> {
     );
   }
 
-  Future<void> _showImportExport() async {
-    await showRoundDialog(
-        context,
-        s.choose,
-        Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            ListTile(
-              title: Text(s.import),
-              leading: const Icon(Icons.download),
-              onTap: () => _showImportDialog(),
-            ),
-            ListTile(
-              title: Text(s.export),
-              leading: const Icon(Icons.file_upload),
-              onTap: () => _showExportDialog(),
-            ),
-          ],
-        ),
-        []);
-  }
-
-  Future<void> _showExportDialog() async {
-    Navigator.of(context).pop();
-    _exportFieldController.text = locator<SnippetProvider>().export;
-    await showRoundDialog(
-        context,
-        s.export,
-        TextField(
-          decoration: const InputDecoration(
-            labelText: 'JSON',
-          ),
-          maxLines: 3,
-          controller: _exportFieldController,
-        ),
-        [
-          TextButton(
-            child: Text(s.ok),
-            onPressed: () => Navigator.pop(context),
-          ),
-        ]);
-  }
-
-  Future<void> _showImportDialog() async {
-    Navigator.of(context).pop();
-    await showRoundDialog(
-        context,
-        s.import,
-        TextField(
-          decoration: InputDecoration(
-            labelText: s.urlOrJson,
-          ),
-          maxLines: 2,
-          controller: _importFieldController,
-        ),
-        [
-          TextButton(
-              onPressed: () => Navigator.of(context).pop(),
-              child: Text(s.cancel)),
-          TextButton(
-            onPressed: () async =>
-                await _import(_importFieldController.text.trim()),
-            child: const Text('GO'),
-          )
-        ]);
-  }
-
-  Future<void> _import(String text) async {
-    if (text.isEmpty) {
-      showSnackBar(context, Text(s.fieldMustNotEmpty));
-      return;
-    }
-    final snippetProvider = locator<SnippetProvider>();
-    if (text.startsWith('http')) {
-      final resp = await Dio().get(text);
-      if (resp.statusCode != 200) {
-        showSnackBar(
-            context, Text(s.httpFailedWithCode(resp.statusCode ?? '-1')));
-        return;
-      }
-      for (final snippet in getSnippetList(resp.data)) {
-        snippetProvider.add(snippet);
-      }
-    } else {
-      for (final snippet in getSnippetList(text)) {
-        snippetProvider.add(snippet);
-      }
-    }
-    Navigator.of(context).pop();
-  }
-
   Widget _buildBody() {
     return Consumer<SnippetProvider>(
       builder: (_, key, __) {