Merge branch 'rustdesk:master' into master

flutter/android/app/src/main/AndroidManifest.xml

@@ -43,7 +43,7 @@
 
         <activity
             android:name=".MainActivity"
-            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode|navigation"
             android:exported="true"
             android:hardwareAccelerated="true"
             android:launchMode="singleTop"

flutter/lib/models/model.dart

@@ -310,19 +310,19 @@ class ImageModel with ChangeNotifier {
   }
 
   double get maxScale {
-    if (_image == null) return 1.0;
+    if (_image == null) return 1.5;
     final size = MediaQueryData.fromWindow(ui.window).size;
     final xscale = size.width / _image!.width;
     final yscale = size.height / _image!.height;
-    return max(1.0, max(xscale, yscale));
+    return max(1.5, max(xscale, yscale));
   }
 
   double get minScale {
-    if (_image == null) return 1.0;
+    if (_image == null) return 1.5;
     final size = MediaQueryData.fromWindow(ui.window).size;
     final xscale = size.width / _image!.width;
     final yscale = size.height / _image!.height;
-    return min(xscale, yscale);
+    return min(xscale, yscale) / 1.5;
   }
 }
 
@@ -724,13 +724,17 @@ class FFI {
 
   static void inputKey(String name, {bool? down, bool? press}) {
     if (!ffiModel.keyboard()) return;
-    setByName(
+    final Map<String, String> out = Map();
-        'input_key',
+    out['name'] = name;
-        json.encode(modify({
+    // default: down = false
-          'name': name,
+    if (down == true) {
-          'down': (down ?? false).toString(),
+      out['down'] = "true";
-          'press': (press ?? true).toString()
+    }
-        })));
+    // default: press = true
+    if (press != false) {
+      out['press'] = "true";
+    }
+    setByName('input_key', json.encode(modify(out)));
   }
 
   static void moveMouse(double x, double y) {

flutter/lib/pages/remote_page.dart

@@ -343,9 +343,14 @@ class _RemotePageState extends State<RemotePage> {
                     onKey: (data, e) {
                       final key = e.logicalKey;
                       if (e is RawKeyDownEvent) {
-                        if (e.repeat) {
+                        if (e.repeat &&
+                            !e.isAltPressed &&
+                            !e.isControlPressed &&
+                            !e.isShiftPressed &&
+                            !e.isMetaPressed) {
                           sendRawKey(e, press: true);
                         } else {
+                          sendRawKey(e, down: true);
                           if (e.isAltPressed && !FFI.alt) {
                             FFI.alt = true;
                           } else if (e.isControlPressed && !FFI.ctrl) {
@@ -355,7 +360,6 @@ class _RemotePageState extends State<RemotePage> {
                           } else if (e.isMetaPressed && !FFI.command) {
                             FFI.command = true;
                           }
-                          sendRawKey(e, down: true);
                         }
                       }
                       // [!_showEdit] workaround for soft-keyboard's control_key like Backspace / Enter
@@ -481,6 +485,7 @@ class _RemotePageState extends State<RemotePage> {
   ///   DoubleFiner -> right click
   ///   HoldDrag -> left drag
 
+  Offset _cacheLongPressPosition = Offset(0, 0);
   Widget getBodyForMobileWithGesture() {
     final touchMode = FFI.ffiModel.touchMode;
     return getMixinGestureDetector(
@@ -504,10 +509,14 @@ class _RemotePageState extends State<RemotePage> {
         },
         onLongPressDown: (d) {
           if (touchMode) {
-            FFI.cursorModel.move(d.localPosition.dx, d.localPosition.dy);
+            _cacheLongPressPosition = d.localPosition;
           }
         },
         onLongPress: () {
+          if (touchMode) {
+            FFI.cursorModel
+                .move(_cacheLongPressPosition.dx, _cacheLongPressPosition.dy);
+          }
           FFI.tap(MouseButtons.right);
         },
         onDoubleFinerTap: (d) {
@@ -534,6 +543,15 @@ class _RemotePageState extends State<RemotePage> {
           if (touchMode) {
             FFI.cursorModel.move(d.localPosition.dx, d.localPosition.dy);
             FFI.sendMouse('down', MouseButtons.left);
+          } else {
+            final cursorX = FFI.cursorModel.x;
+            final cursorY = FFI.cursorModel.y;
+            final visible =
+                FFI.cursorModel.getVisibleRect().inflate(1); // extend edges
+            final size = MediaQueryData.fromWindow(ui.window).size;
+            if (!visible.contains(Offset(cursorX, cursorY))) {
+              FFI.cursorModel.move(size.width / 2, size.height / 2);
+            }
           }
         },
         onOneFingerPanUpdate: (d) {

flutter/lib/widgets/gestures.dart

@@ -2,7 +2,7 @@ import 'dart:async';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/widgets.dart';
 
-enum CustomTouchGestureState {
+enum GestureState {
   none,
   oneFingerPan,
   twoFingerScale,
@@ -35,64 +35,41 @@ class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
   GestureDragUpdateCallback? onThreeFingerVerticalDragUpdate;
   GestureDragEndCallback? onThreeFingerVerticalDragEnd;
 
-  var _currentState = CustomTouchGestureState.none;
+  var _currentState = GestureState.none;
-  Timer? _startEventDebounceTimer;
+  Timer? _debounceTimer;
 
   void _init() {
     debugPrint("CustomTouchGestureRecognizer init");
-    onStart = (d) {
+    // onStart = (d) {};
-      _startEventDebounceTimer?.cancel();
+    onUpdate = (d) {
-      if (d.pointerCount == 1) {
+      _debounceTimer?.cancel();
-        _currentState = CustomTouchGestureState.oneFingerPan;
+      if (d.pointerCount == 1 && _currentState != GestureState.oneFingerPan) {
-        if (onOneFingerPanStart != null) {
+        onOneFingerStartDebounce(d);
-          onOneFingerPanStart!(DragStartDetails(
+      } else if (d.pointerCount == 2 &&
-              localPosition: d.localFocalPoint, globalPosition: d.focalPoint));
+          _currentState != GestureState.twoFingerScale) {
-        }
+        onTwoFingerStartDebounce(d);
-        debugPrint("start oneFingerPan");
+      } else if (d.pointerCount == 3 &&
-      } else if (d.pointerCount == 2) {
+          _currentState != GestureState.threeFingerVerticalDrag) {
-        if (_currentState == CustomTouchGestureState.threeFingerVerticalDrag) {
+        _currentState = GestureState.threeFingerVerticalDrag;
-          // 3 -> 2 debounce
-          _startEventDebounceTimer = Timer(Duration(milliseconds: 200), () {
-            _currentState = CustomTouchGestureState.twoFingerScale;
-            if (onTwoFingerScaleStart != null) {
-              onTwoFingerScaleStart!(ScaleStartDetails(
-                  localFocalPoint: d.localFocalPoint,
-                  focalPoint: d.focalPoint));
-            }
-            debugPrint("debounce start twoFingerScale success");
-          });
-        }
-        _currentState = CustomTouchGestureState.twoFingerScale;
-        // startWatchTimer();
-        if (onTwoFingerScaleStart != null) {
-          onTwoFingerScaleStart!(ScaleStartDetails(
-              localFocalPoint: d.localFocalPoint, focalPoint: d.focalPoint));
-        }
-        debugPrint("start twoFingerScale");
-      } else if (d.pointerCount == 3) {
-        _currentState = CustomTouchGestureState.threeFingerVerticalDrag;
         if (onThreeFingerVerticalDragStart != null) {
           onThreeFingerVerticalDragStart!(
               DragStartDetails(globalPosition: d.localFocalPoint));
         }
         debugPrint("start threeFingerScale");
-        // _reset();
       }
-    };
+      if (_currentState != GestureState.none) {
-    onUpdate = (d) {
-      if (_currentState != CustomTouchGestureState.none) {
         switch (_currentState) {
-          case CustomTouchGestureState.oneFingerPan:
+          case GestureState.oneFingerPan:
             if (onOneFingerPanUpdate != null) {
               onOneFingerPanUpdate!(_getDragUpdateDetails(d));
             }
             break;
-          case CustomTouchGestureState.twoFingerScale:
+          case GestureState.twoFingerScale:
             if (onTwoFingerScaleUpdate != null) {
               onTwoFingerScaleUpdate!(d);
             }
             break;
-          case CustomTouchGestureState.threeFingerVerticalDrag:
+          case GestureState.threeFingerVerticalDrag:
             if (onThreeFingerVerticalDragUpdate != null) {
               onThreeFingerVerticalDragUpdate!(_getDragUpdateDetails(d));
             }
@@ -105,21 +82,22 @@ class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
     };
     onEnd = (d) {
       debugPrint("ScaleGestureRecognizer onEnd");
+      _debounceTimer?.cancel();
       // end
       switch (_currentState) {
-        case CustomTouchGestureState.oneFingerPan:
+        case GestureState.oneFingerPan:
           debugPrint("TwoFingerState.pan onEnd");
           if (onOneFingerPanEnd != null) {
             onOneFingerPanEnd!(_getDragEndDetails(d));
           }
           break;
-        case CustomTouchGestureState.twoFingerScale:
+        case GestureState.twoFingerScale:
           debugPrint("TwoFingerState.scale onEnd");
           if (onTwoFingerScaleEnd != null) {
             onTwoFingerScaleEnd!(d);
           }
           break;
-        case CustomTouchGestureState.threeFingerVerticalDrag:
+        case GestureState.threeFingerVerticalDrag:
           debugPrint("ThreeFingerState.vertical onEnd");
           if (onThreeFingerVerticalDragEnd != null) {
             onThreeFingerVerticalDragEnd!(_getDragEndDetails(d));
@@ -128,10 +106,50 @@ class CustomTouchGestureRecognizer extends ScaleGestureRecognizer {
         default:
           break;
       }
-      _currentState = CustomTouchGestureState.none;
+      _debounceTimer = Timer(Duration(milliseconds: 200), () {
+        _currentState = GestureState.none;
+      });
     };
   }
 
+  void onOneFingerStartDebounce(ScaleUpdateDetails d) {
+    final start = (ScaleUpdateDetails d) {
+      _currentState = GestureState.oneFingerPan;
+      if (onOneFingerPanStart != null) {
+        onOneFingerPanStart!(DragStartDetails(
+            localPosition: d.localFocalPoint, globalPosition: d.focalPoint));
+      }
+    };
+    if (_currentState != GestureState.none) {
+      _debounceTimer = Timer(Duration(milliseconds: 200), () {
+        start(d);
+        debugPrint("debounce start oneFingerPan");
+      });
+    } else {
+      start(d);
+      debugPrint("start oneFingerPan");
+    }
+  }
+
+  void onTwoFingerStartDebounce(ScaleUpdateDetails d) {
+    final start = (ScaleUpdateDetails d) {
+      _currentState = GestureState.twoFingerScale;
+      if (onTwoFingerScaleStart != null) {
+        onTwoFingerScaleStart!(ScaleStartDetails(
+            localFocalPoint: d.localFocalPoint, focalPoint: d.focalPoint));
+      }
+    };
+    if (_currentState == GestureState.threeFingerVerticalDrag) {
+      _debounceTimer = Timer(Duration(milliseconds: 200), () {
+        start(d);
+        debugPrint("debounce start twoFingerScale");
+      });
+    } else {
+      start(d);
+      debugPrint("start twoFingerScale");
+    }
+  }
+
   DragUpdateDetails _getDragUpdateDetails(ScaleUpdateDetails d) =>
       DragUpdateDetails(
           globalPosition: d.focalPoint,

rpm-suse.spec

@@ -47,7 +47,7 @@ case "$1" in
   ;;
   2)
     # for upgrade
-    service rustdesk stop || true
+    systemctl stop rustdesk || true
   ;;
 esac
 
@@ -61,10 +61,26 @@ systemctl start rustdesk
 update-desktop-database
 
 %preun
+case "$1" in
+  0)
+    # for uninstall
     systemctl stop rustdesk || true
     systemctl disable rustdesk || true
     rm /etc/systemd/system/rustdesk.service || true
+  ;;
+  1)
+    # for upgrade
+  ;;
+esac
 
 %postun
+case "$1" in
+  0)
+    # for uninstall
     rm /usr/share/applications/rustdesk.desktop || true
     update-desktop-database
+  ;;
+  1)
+    # for upgrade
+  ;;
+esac

rpm.spec

@@ -48,7 +48,7 @@ case "$1" in
   ;;
   2)
     # for upgrade
-    service rustdesk stop || true
+    systemctl stop rustdesk || true
   ;;
 esac
 
@@ -62,10 +62,26 @@ systemctl start rustdesk
 update-desktop-database
 
 %preun
+case "$1" in
+  0)
+    # for uninstall
     systemctl stop rustdesk || true
     systemctl disable rustdesk || true
     rm /etc/systemd/system/rustdesk.service || true
+  ;;
+  1)
+    # for upgrade
+  ;;
+esac
 
 %postun
+case "$1" in
+  0)
+    # for uninstall
     rm /usr/share/applications/rustdesk.desktop || true
     update-desktop-database
+  ;;
+  1)
+    # for upgrade
+  ;;
+esac

src/lang.rs

@@ -1,21 +1,43 @@
+use serde_json::{json, value::Value};
 use std::ops::Deref;
 
 mod cn;
 mod cs;
 mod da;
-mod sk;
 mod de;
 mod en;
-mod es;
 mod eo;
+mod es;
 mod fr;
 mod id;
 mod it;
 mod ptbr;
 mod ru;
+mod sk;
 mod tr;
 mod tw;
 
+lazy_static::lazy_static! {
+    pub static ref LANGS: Value =
+        json!(vec![
+            ("en", "English"),
+            ("it", "Italiano"),
+            ("fr", "Français"),
+            ("de", "Deutsch"),
+            ("cn", "简体中文"),
+            ("tw", "繁體中文"),
+            ("pt", "Português"),
+            ("es", "Español"),
+            ("ru", "Русский"),
+            ("sk", "Slovenčina"),
+            ("id", "Indonesia"),
+            ("cs", "Čeština"),
+            ("da", "Dansk"),
+            ("eo", "Esperanto"),
+            ("tr", "Türkçe"),
+        ]);
+}
+
 #[cfg(not(any(target_os = "android", target_os = "ios")))]
 pub fn translate(name: String) -> String {
     let locale = sys_locale::get_locale().unwrap_or_default().to_lowercase();

src/lang/cn.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "退出"),
         ("In privacy mode", "进入隐私模式"),
         ("Out privacy mode", "退出隐私模式"),
+        ("Language", "语言"),
     ].iter().cloned().collect();
 }

src/lang/cs.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Vypnutý"),
         ("In privacy mode", "v režimu soukromí"),
         ("Out privacy mode", "mimo režim soukromí"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/da.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Slukket"),
         ("In privacy mode", "I databeskyttelsestilstand"),
         ("Out privacy mode", "Databeskyttelsestilstand fra"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/de.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Ausgeschaltet"),
         ("In privacy mode", "im Datenschutzmodus"),
         ("Out privacy mode", "Datenschutzmodus aus"),
+        ("Language", "Sprache"),
     ].iter().cloned().collect();
 }

src/lang/eo.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", ""),
         ("In privacy mode", ""),
         ("Out privacy mode", ""),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/es.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Apagado"),
         ("In privacy mode", "En modo de privacidad"),
         ("Out privacy mode", "Fuera del modo de privacidad"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/fr.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Éteindre"),
         ("In privacy mode", "en mode privé"),
         ("Out privacy mode", "hors mode de confidentialité"),
+        ("Language", "Langue"),
     ].iter().cloned().collect();
 }

src/lang/id.rs

@@ -158,7 +158,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Allow using clipboard", "Izinkan menggunakan papan klip"),
         ("Allow hearing sound", "Izinkan mendengarkan suara"),
         ("Allow file copy and paste", "Izinkan penyalinan dan tempel file"),
-        ("File transfer", "Transfer file"),
         ("Connected", "Terkoneksi"),
         ("Direct and encrypted connection", "Koneksi langsung dan terenkripsi"),
         ("Relayed and encrypted connection", "Koneksi relai dan terenkripsi"),
@@ -280,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Matikan"),
         ("In privacy mode", "Dalam mode privasi"),
         ("Out privacy mode", "Keluar dari mode privasi"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/it.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Spegni"),
         ("In privacy mode", "In modalità privacy"),
         ("Out privacy mode", "Fuori modalità privacy"),
+        ("Language", "Linguaggio"),
     ].iter().cloned().collect();
 }

src/lang/ptbr.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Desligado"),
         ("In privacy mode", "No modo de privacidade"),
         ("Out privacy mode", "Fora do modo de privacidade"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/ru.rs

@@ -263,9 +263,9 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("android_version_audio_tip", "Текущая версия Android не поддерживает захват звука, обновите ее до Android 10 или выше."),
         ("android_start_service_tip", "Нажмите [Запуск промежуточного сервера] или ОТКРЫТЬ разрешение [Захват экрана], чтобы запустить службу демонстрации экрана."),
         ("Account", "Аккаунт"),
-        ("Quit", "Выйти"),
         ("Overwrite", "Перезаписать"),
         ("This file exists, skip or overwrite this file?", "Этот файл существует, пропустить или перезаписать этот файл?"),
+        ("Quit", "Выйти"),
         ("doc_mac_permission", "https://rustdesk.com/docs/ru/manual/mac/#включение-разрешений"),
         ("Help", "Помощь"),
         ("Failed", "Неуспешный"),
@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Выключен"),
         ("In privacy mode", "В режиме конфиденциальности"),
         ("Out privacy mode", "Выход из режима конфиденциальности"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/sk.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Vypnutý"),
         ("In privacy mode", "V režime súkromia"),
         ("Out privacy mode", "Mimo režimu súkromia"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/template.rs

@@ -264,7 +264,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("android_start_service_tip", ""),
         ("Account", ""),
         ("Overwrite", ""),
-        ("This file exists, skip or overwrite this file?", "")
+        ("This file exists, skip or overwrite this file?", ""),
         ("Quit", ""),
         ("doc_mac_permission", ""),
         ("Help", ""),
@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", ""),
         ("In privacy mode", ""),
         ("Out privacy mode", ""),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/tr.rs

@@ -279,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "Kapalı"),
         ("In privacy mode", "Gizlilik modunda"),
         ("Out privacy mode", "Gizlilik modu dışında"),
+        ("Language", ""),
     ].iter().cloned().collect();
 }

src/lang/tw.rs

@@ -262,13 +262,12 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("android_stop_service_tip", "關閉服務將自動關閉所有已建立的連接。"),
         ("android_version_audio_tip", "目前的 Android 版本不支持音訊錄製，請升級至 Android 10 或以上版本。"),
         ("android_start_service_tip", "點擊 ｢啟動服務｣ 或啟用 ｢畫面錄製｣ 權限以開啟手機畫面共享服務。"),
-        ("Account", "帳號"),
+        ("Account", "帳戶"),
-        ("Quit", "退出"),
         ("Overwrite", "覆寫"),
         ("This file exists, skip or overwrite this file?", "此檔案/資料夾已存在，要跳過或是覆寫此檔案嗎？"),
+        ("Quit", "退出"),
         ("doc_mac_permission", "https://rustdesk.com/docs/zh-tw/manual/mac/#啟用權限"),
         ("Help", "幫助"),
-        ("Account", "帳戶"),
         ("Failed", "失敗"),
         ("Succeeded", "成功"),
         ("Someone turns on privacy mode, exit", "其他用戶開啟隱私模式，退出"),
@@ -280,5 +279,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Turned off", "退出"),
         ("In privacy mode", "開啟隱私模式"),
         ("Out privacy mode", "退出隱私模式"),
+        ("Language", "語言"),
     ].iter().cloned().collect();
 }

src/platform/windows.rs

@@ -1059,6 +1059,7 @@ sc start {app_name}
 sc stop {app_name}
 sc delete {app_name}
 {after_install}
+{sleep}
     ",
         uninstall_str=uninstall_str,
         path=path,
@@ -1081,6 +1082,11 @@ sc delete {app_name}
         config_path=Config::file().to_str().unwrap_or(""),
         lic=register_licence(),
         after_install=get_after_install(&exe),
+        sleep=if debug {
+            "timeout 300"
+        } else {
+            ""
+        }
     );
     run_cmds(cmds, debug, "install")?;
     std::thread::sleep(std::time::Duration::from_millis(2000));

src/ui.rs

@@ -3,9 +3,9 @@ mod cm;
 mod inline;
 #[cfg(target_os = "macos")]
 mod macos;
+pub mod remote;
 #[cfg(target_os = "windows")]
 pub mod win_privacy;
-pub mod remote;
 use crate::common::SOFTWARE_UPDATE_URL;
 use crate::ipc;
 use hbb_common::{
@@ -753,6 +753,10 @@ impl UI {
             self.get_option_("custom-rendezvous-server"),
         )
     }
+
+    fn get_langs(&self) -> String {
+        crate::lang::LANGS.to_string()
+    }
 }
 
 impl sciter::EventHandler for UI {
@@ -829,6 +833,7 @@ impl sciter::EventHandler for UI {
         fn discover();
         fn get_lan_peers();
         fn get_uuid();
+        fn get_langs();
     }
 }
 

src/ui/index.tis

@@ -163,8 +163,43 @@ class AudioInputs: Reactor.Component {
         }
         this.toggleMenuState();
     }
+};
+
+class Languages: Reactor.Component {
+    function render() {
+        var langs = JSON.parse(handler.get_langs());
+        var me = this;
+        self.timer(1ms, function() { me.toggleMenuState() });
+        return <li>{translate('Language')}
+            <menu #languages key={langs.length}>
+                <li id="default"><span>{svg_checkmark}</span>Default</li>
+                <div .separator />
+                {langs.map(function(lang) {
+                return <li id={lang[0]}><span>{svg_checkmark}</span>{lang[1]}</li>;
+                })}
+            </menu>
+        </li>;
     }
 
+
+    function toggleMenuState() {
+        var cur = handler.get_local_option("lang") || "default";
+        for (var el in this.$$(menu#languages>li)) {
+            var selected = cur == el.id;
+            el.attributes.toggleClass("selected", selected);
+        }
+    }
+
+    event click $(menu#languages>li) (_, me) {
+        var v = me.id;
+        if (v == "default") v = "";
+        handler.set_local_option("lang", v);
+        app.update();
+        this.toggleMenuState();
+    }
+}
+
+
 function getUserName() {
     try {
         return JSON.parse(handler.get_local_option("user_info")).name;
@@ -222,7 +257,7 @@ class MyIdMenu: Reactor.Component {
                 {handler.is_ok_change_id() && key_confirmed ? <li #change-id>{translate('Change ID')}</li> : ""}
                 <div .separator />
                 <li #allow-darktheme><span>{svg_checkmark}</span>{translate('Dark Theme')}</li>
-                <div .separator />
+                <Languages />
                 <li #about>{translate('About')} {" "}{handler.get_app_name()}</li>
             </menu>
         </popup>;

src/ui/remote.rs

@@ -1956,11 +1956,11 @@ impl Remote {
         let mut config: PeerConfig = self.handler.load_config();
         let mut transfer_metas = TransferSerde::default();
         for job in self.read_jobs.iter() {
-            let json_str = serde_json::to_string(&job.gen_meta()).unwrap();
+            let json_str = serde_json::to_string(&job.gen_meta()).unwrap_or_default();
             transfer_metas.read_jobs.push(json_str);
         }
         for job in self.write_jobs.iter() {
-            let json_str = serde_json::to_string(&job.gen_meta()).unwrap();
+            let json_str = serde_json::to_string(&job.gen_meta()).unwrap_or_default();
             transfer_metas.write_jobs.push(json_str);
         }
         log::info!("meta: {:?}", transfer_metas);