fix: mobile, server page, jumps on loading (#8819)

Signed-off-by: dignow <linlong1265@gmail.com>

flutter/lib/common.dart

@@ -3326,18 +3326,8 @@ bool isInHomePage() {
   return controller.state.value.selected == 0;
 }
 
-Widget buildPresetPasswordWarning() {
-  return FutureBuilder<bool>(
-    future: bind.isPresetPassword(),
-    builder: (BuildContext context, AsyncSnapshot<bool> snapshot) {
-      if (snapshot.connectionState == ConnectionState.waiting) {
-        return CircularProgressIndicator(); // Show a loading spinner while waiting for the Future to complete
-      } else if (snapshot.hasError) {
-        return Text(
-            'Error: ${snapshot.error}'); // Show an error message if the Future completed with an error
-      } else if (snapshot.hasData && snapshot.data == true) {
-        if (bind.mainGetBuildinOption(
-                key: kOptionRemovePresetPasswordWarning) !=
+Widget _buildPresetPasswordWarning() {
+  if (bind.mainGetBuildinOption(key: kOptionRemovePresetPasswordWarning) !=
       'N') {
     return SizedBox.shrink();
   }
@@ -3362,6 +3352,27 @@ Widget buildPresetPasswordWarning() {
       ],
     ).paddingAll(8),
   ); // Show a warning message if the Future completed with true
+}
+
+Widget buildPresetPasswordWarningMobile() {
+  if (bind.isPresetPasswordMobileOnly()) {
+    return _buildPresetPasswordWarning();
+  } else {
+    return SizedBox.shrink();
+  }
+}
+
+Widget buildPresetPasswordWarning() {
+  return FutureBuilder<bool>(
+    future: bind.isPresetPassword(),
+    builder: (BuildContext context, AsyncSnapshot<bool> snapshot) {
+      if (snapshot.connectionState == ConnectionState.waiting) {
+        return CircularProgressIndicator(); // Show a loading spinner while waiting for the Future to complete
+      } else if (snapshot.hasError) {
+        return Text(
+            'Error: ${snapshot.error}'); // Show an error message if the Future completed with an error
+      } else if (snapshot.hasData && snapshot.data == true) {
+        return _buildPresetPasswordWarning();
       } else {
         return SizedBox
             .shrink(); // Show nothing if the Future completed with false or null

flutter/lib/mobile/pages/server_page.dart

@@ -187,7 +187,7 @@ class _ServerPageState extends State<ServerPage> {
                     child: Column(
                       mainAxisAlignment: MainAxisAlignment.start,
                       children: [
-                        buildPresetPasswordWarning(),
+                        buildPresetPasswordWarningMobile(),
                         gFFI.serverModel.isStart
                             ? ServerInfo()
                             : ServiceNotRunningNotification(),

src/flutter_ffi.rs

@@ -1966,6 +1966,12 @@ pub fn is_preset_password() -> bool {
         })
 }
 
+// Don't call this function for desktop version.
+// We need this function because we want a sync return for mobile version.
+pub fn is_preset_password_mobile_only() -> SyncReturn<bool> {
+    SyncReturn(is_preset_password())
+}
+
 /// Send a url scheme through the ipc.
 ///
 /// * macOS only