opt.

lib/data/model/app/backup.dart

@@ -11,14 +11,14 @@ class Backup {
   final List<PrivateKeyInfo> keys;
   final Map<String, String> dockerHosts;
 
-  Backup(
-    this.version,
-    this.date,
-    this.spis,
-    this.snippets,
-    this.keys,
-    this.dockerHosts,
-  );
+  Backup({
+    required this.version,
+    required this.date,
+    required this.spis,
+    required this.snippets,
+    required this.keys,
+    required this.dockerHosts,
+  });
 
   Backup.fromJson(Map<String, dynamic> json)
       : version = json['version'] as int,

lib/data/model/app/error.dart

@@ -0,0 +1,34 @@
+enum ErrFrom {
+  unknown,
+  apt,
+  docker,
+  sftp,
+  ssh,
+  status;
+}
+
+abstract class Err<T> {
+  final ErrFrom from;
+  final T type;
+  final String? message;
+
+  Err({required this.from, required this.type, this.message});
+}
+
+enum DockerErrType {
+  unknown,
+  noClient,
+  notInstalled,
+  invalidVersion,
+  cmdNoPrefix
+}
+
+class DockerErr extends Err<DockerErrType> {
+  DockerErr({required DockerErrType type, String? message})
+      : super(from: ErrFrom.docker, type: type, message: message);
+
+  @override
+  String toString() {
+    return 'DockerErr<$type>: $message';
+  }
+}

lib/data/model/app/menu.dart

@@ -0,0 +1,105 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_gen/gen_l10n/l10n.dart';
+
+enum ServerTabMenuType {
+  sftp,
+  snippet,
+  pkg,
+  docker,
+  edit;
+
+  IconData get icon {
+    switch (this) {
+      case ServerTabMenuType.sftp:
+        return Icons.insert_drive_file;
+      case ServerTabMenuType.snippet:
+        return Icons.code;
+      case ServerTabMenuType.pkg:
+        return Icons.system_security_update;
+      case ServerTabMenuType.docker:
+        return Icons.view_agenda;
+      case ServerTabMenuType.edit:
+        return Icons.edit;
+    }
+  }
+
+  String text(S s) {
+    switch (this) {
+      case ServerTabMenuType.sftp:
+        return 'SFTP';
+      case ServerTabMenuType.snippet:
+        return s.snippet;
+      case ServerTabMenuType.pkg:
+        return s.pkg;
+      case ServerTabMenuType.docker:
+        return 'Docker';
+      case ServerTabMenuType.edit:
+        return s.edit;
+    }
+  }
+
+  PopupMenuItem<ServerTabMenuType> build(S s) => _build(this, icon, text(s));
+}
+
+enum DockerMenuType {
+  start,
+  stop,
+  restart,
+  rm,
+  logs;
+
+  static List<DockerMenuType> items(bool running) {
+    if (running) {
+      return [stop, restart, rm, logs];
+    } else {
+      return [start, rm, logs];
+    }
+  }
+
+  IconData get icon {
+    switch (this) {
+      case DockerMenuType.start:
+        return Icons.play_arrow;
+      case DockerMenuType.stop:
+        return Icons.stop;
+      case DockerMenuType.restart:
+        return Icons.restart_alt;
+      case DockerMenuType.rm:
+        return Icons.delete;
+      case DockerMenuType.logs:
+        return Icons.logo_dev;
+    }
+  }
+
+  String text(S s) {
+    switch (this) {
+      case DockerMenuType.start:
+        return s.start;
+      case DockerMenuType.stop:
+        return s.stop;
+      case DockerMenuType.restart:
+        return s.restart;
+      case DockerMenuType.rm:
+        return s.delete;
+      case DockerMenuType.logs:
+        return s.log;
+    }
+  }
+
+  PopupMenuItem<DockerMenuType> build(S s) => _build(this, icon, text(s));
+}
+
+PopupMenuItem<T> _build<T>(T t, IconData icon, String text) {
+  return PopupMenuItem<T>(
+    value: t,
+    child: Row(
+      children: [
+        Icon(icon),
+        const SizedBox(
+          width: 10,
+        ),
+        Text(text),
+      ],
+    ),
+  );
+}

lib/data/model/app/path_with_prefix.dart

@@ -1,16 +1,10 @@
 class PathWithPrefix {
-  late String _prefixPath;
+  final String _prefixPath;
   String _path = '/';
   String? _prePath;
   String get path => _prefixPath + _path;
 
-  PathWithPrefix(String prefixPath) {
-    if (prefixPath.endsWith('/')) {
-      _prefixPath = prefixPath.substring(0, prefixPath.length - 1);
-    } else {
-      _prefixPath = prefixPath;
-    }
-  }
+  PathWithPrefix(String prefixPath) : _prefixPath = _trimSuffix(prefixPath);
 
   void update(String newPath) {
     _prePath = _path;
@@ -36,3 +30,10 @@ class PathWithPrefix {
     return true;
   }
 }
+
+String _trimSuffix(String prefixPath) {
+  if (prefixPath.endsWith('/')) {
+    return prefixPath.substring(0, prefixPath.length - 1);
+  }
+  return prefixPath;
+}