[fix] show truthful signaling recovery state and pin safe retries

apps/desktop/src/gui/application/gui_application.cpp

@@ -74,10 +74,6 @@ namespace {
 
 using namespace std::chrono_literals;
 
-// Median reconnect to the signal server lands around 7 s on a lossy path, so a
-// drop shorter than this is almost always already being recovered from.
-constexpr auto kSignalOfflineGrace = 10s;
-
 std::optional<std::string> GenerateRandomPassword(std::string_view current) {
   constexpr std::string_view alphabet =
       "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
@@ -1890,6 +1886,7 @@ void GuiApplication::Tick() {
   HandlePasswordChangeResult();
   HandleCredentialRecovery();
   if (!peer_) {
+    signal_connection_indicator_.Reset();
     CreateConnectionPeer();
   }
 #ifdef __linux__
@@ -2482,20 +2479,9 @@ void GuiApplication::SyncMainWindow() {
     ui_->main->set_password_change_pending(password_change_pending_);
   }
   const bool signal_online = signal_connected_.load();
-  if (signal_online) {
-    signal_lost_at_valid_ = false;
-  } else if (!signal_lost_at_valid_) {
-    signal_lost_at_ = std::chrono::steady_clock::now();
-    signal_lost_at_valid_ = true;
-  }
-  // Reconnects routinely take several seconds on a lossy path; only report
-  // offline once the connection has stayed down long enough to be a real
-  // outage rather than a blip the reconnect is already recovering from.
-  const bool signal_offline =
-      !signal_online && signal_lost_at_valid_ &&
-      std::chrono::steady_clock::now() - signal_lost_at_ >
-          kSignalOfflineGrace;
-  ui_->main->set_signal_connected(!signal_offline);
+  ui_->main->set_signal_connected(signal_online);
+  ui_->main->set_signal_reconnecting(
+      signal_connection_indicator_.Update(signal_online));
   ui_->main->set_signal_tls_error(signal_status_ ==
                                   SignalStatus::SignalTlsCertError);
   ui_->main->set_update_available(update_available_);

apps/desktop/src/gui/application/gui_application.h

@@ -14,6 +14,7 @@
 
 #include <remote_action.h>
 
+#include "application/signal_connection_indicator.h"
 #include "runtime/cursor_state_provider.h"
 #include "runtime/gui_runtime.h"
 
@@ -106,11 +107,7 @@ private:
       cursor_delivery_states_;
   uint32_t cursor_state_sequence_ = 0;
   std::chrono::steady_clock::time_point next_video_frame_time_{};
-  // The signal server is reached over a lossy path that routinely drops for the
-  // few seconds a reconnect takes, so the main window holds its "connected"
-  // indication through a brief blip instead of flickering offline.
-  std::chrono::steady_clock::time_point signal_lost_at_{};
-  bool signal_lost_at_valid_ = false;
+  SignalConnectionIndicator signal_connection_indicator_;
 #if defined(__linux__) && !defined(__APPLE__)
   bool use_xwayland_gui_ = false;
   bool use_x11_custom_titlebar_ = false;

apps/desktop/src/gui/application/signal_connection_indicator.h

@@ -0,0 +1,38 @@
+#ifndef CROSSDESK_SIGNAL_CONNECTION_INDICATOR_H_
+#define CROSSDESK_SIGNAL_CONNECTION_INDICATOR_H_
+
+#include <chrono>
+#include <optional>
+
+namespace crossdesk {
+
+// Presentation state only. The actual connected flag remains authoritative
+// for actions and other UI consumers, including the announcement inbox.
+class SignalConnectionIndicator {
+ public:
+  using Clock = std::chrono::steady_clock;
+
+  bool Update(bool connected, Clock::time_point now = Clock::now()) {
+    if (connected) {
+      disconnected_at_.reset();
+    } else if (was_connected_) {
+      disconnected_at_ = now;
+    }
+    was_connected_ = connected;
+    return disconnected_at_ &&
+           now - *disconnected_at_ < std::chrono::seconds(10);
+  }
+
+  void Reset() {
+    was_connected_ = false;
+    disconnected_at_.reset();
+  }
+
+ private:
+  bool was_connected_ = false;
+  std::optional<Clock::time_point> disconnected_at_;
+};
+
+}  // namespace crossdesk
+
+#endif

apps/desktop/src/gui/assets/localization/localization_data.h

@@ -259,6 +259,8 @@ struct TranslationRow {
   X(signal_disconnected, u8"未连接服务器", "Disconnected",                     \
     u8"Нет подключения к серверу")                                             \
   X(signal_reconnect, u8"重新连接", "Reconnect", u8"Переподключиться")             \
+  X(signal_reconnecting, u8"正在重新连接...", "Reconnecting...",               \
+    u8"Переподключение...")                                                    \
   X(signal_tls_cert_error, u8"证书验证失败，请重新安装自托管根证书",           \
     "Certificate verification failed. Reinstall the self-hosted root "         \
     "certificate.",                                                            \

apps/desktop/src/gui/ui/main_window.slint

@@ -66,6 +66,7 @@ export global UiStrings {
     in-out property <string> signal-disconnected: "Signal server disconnected";
     in-out property <string> tls-error: "Signal server TLS certificate error";
     in-out property <string> signal-reconnect: "Reconnect";
+    in-out property <string> signal-reconnecting: "Reconnecting...";
     in-out property <string> update-available: "A new version is available";
     in-out property <string> new-version: "New version";
     in-out property <string> check-for-updates: "Check for updates";
@@ -306,6 +307,7 @@ export component MainWindow inherits Window {
     in property <bool> password-visible: true;
     in property <bool> password-change-pending: false;
     in property <bool> signal-connected: false;
+    in property <bool> signal-reconnecting: false;
     in property <bool> signal-tls-error: false;
     in property <[RecentConnection]> recent-connections;
     in property <[AnnouncementItem]> announcements;
@@ -1211,7 +1213,7 @@ export component MainWindow inherits Window {
                     width: 8px;
                     height: 8px;
                     border-radius: 4px;
-                    background: root.signal-tls-error ? #f59e0b : #ef4444;
+                    background: root.signal-tls-error || root.signal-reconnecting ? #f59e0b : #ef4444;
             }
             Text {
                     x: 28px;
@@ -1219,6 +1221,7 @@ export component MainWindow inherits Window {
                     height: 18px;
                     text: root.signal-tls-error ? UiStrings.tls-error
                           : root.signal-connected ? UiStrings.signal-connected
+                          : root.signal-reconnecting ? UiStrings.signal-reconnecting
                           : UiStrings.signal-disconnected;
                     color: #343941;
                     font-size: ImGuiFontStyle.base;

apps/desktop/src/gui/ui/ui_localization.h

@@ -112,6 +112,8 @@ inline int ApplyMainWindowStrings(
   strings.set_tls_error(Text(localization::signal_tls_cert_error[language]));
   strings.set_signal_reconnect(
       Text(localization::signal_reconnect[language]));
+  strings.set_signal_reconnecting(
+      Text(localization::signal_reconnecting[language]));
   strings.set_update_available(
       Text(localization::new_version_available[language]));
   strings.set_new_version(Text(localization::new_version[language]));