fix: FFI id assignment && keep Remote Page state for multi tabs

Signed-off-by: Kingtous <kingtous@qq.com>

build.rs

@@ -77,7 +77,7 @@ fn gen_flutter_rust_bridge() {
         ..Default::default()
     };
     // run fbr_codegen
-    lib_flutter_rust_bridge_codegen::frb_codegen(opts).unwrap();
+    // lib_flutter_rust_bridge_codegen::frb_codegen(opts).unwrap();
 }
 
 fn main() {

flutter/lib/desktop/pages/remote_page.dart

@@ -31,7 +31,8 @@ class RemotePage extends StatefulWidget {
   _RemotePageState createState() => _RemotePageState();
 }
 
-class _RemotePageState extends State<RemotePage> with WindowListener {
+class _RemotePageState extends State<RemotePage>
+    with WindowListener, AutomaticKeepAliveClientMixin {
   Timer? _interval;
   Timer? _timer;
   bool _showBar = !isWebDesktop;
@@ -234,6 +235,7 @@ class _RemotePageState extends State<RemotePage> with WindowListener {
 
   @override
   Widget build(BuildContext context) {
+    super.build(context);
     final pi = Provider.of<FfiModel>(context).pi;
     final hideKeyboard = isKeyboardShown() && _showEdit;
     final showActionButton = !_showBar || hideKeyboard;
@@ -916,6 +918,9 @@ class _RemotePageState extends State<RemotePage> with WindowListener {
         break;
     }
   }
+
+  @override
+  bool get wantKeepAlive => true;
 }
 
 class ImagePaint extends StatelessWidget {

flutter/lib/main.dart

@@ -22,7 +22,7 @@ Future<Null> main(List<String> args) async {
   // global FFI, use this **ONLY** for global configuration
   // for convenience, use global FFI on mobile platform
   // focus on multi-ffi on desktop first
-  initGlobalFFI();
+  await initGlobalFFI();
   // await Firebase.initializeApp();
   if (isAndroid) {
     toAndroidChannelInit();

flutter/lib/models/model.dart

@@ -913,7 +913,7 @@ class FFI {
       }();
       // every instance will bind a stream
     }
-    id = id;
+    this.id = id;
   }
 
   /// Login with [password], choose if the client should [remember] it.
@@ -935,6 +935,7 @@ class FFI {
     ffiModel.clear();
     canvasModel.clear();
     resetModifiers();
+    print("model closed");
   }
 
   /// Send **get** command to the Rust core based on [name] and [arg].