has crash when popup msgbox when there is keyboard or some other

condition

flutter_hbb/lib/common.dart

@@ -64,12 +64,13 @@ Future<T> showAlertDialog<T>(BuildContext context, BuildAlertDailog build,
   return res;
 }
 
-void msgbox(String type, String title, String text, BuildContext context,
-    [bool hasCancel]) {
+Future<T> msgbox<T>(
+    String type, String title, String text, BuildContext context,
+    [bool hasCancel]) async {
   if (hasCancel == null) {
     hasCancel = type != 'error';
   }
-  showAlertDialog(
+  return await showAlertDialog<T>(
       context,
       (_) => Tuple3(Text(title), Text(text), [
             hasCancel

flutter_hbb/lib/home_page.dart

@@ -168,7 +168,7 @@ class _HomePageState extends State<HomePage> {
     if (platform == 'mac os')
       platform = 'mac';
     else if (platform != 'linux') platform = 'win';
-    return Image.asset('assets/$platform.png', width: 36, height: 36);
+    return Image.asset('assets/$platform.png', width: 24, height: 24);
   }
 
   Widget getPeers() {

flutter_hbb/lib/model.dart

@@ -33,9 +33,13 @@ class FfiModel with ChangeNotifier {
   bool _waitForImage;
   bool _initialized = false;
   final _permissions = Map<String, bool>();
+  bool _secure;
+  bool _direct;
 
   get permissions => _permissions;
   get initialized => _initialized;
+  get secure => _secure;
+  get direct => _direct;
   get pi => _pi;
 
   FfiModel() {
@@ -61,9 +65,32 @@ class FfiModel with ChangeNotifier {
     _pi = PeerInfo();
     _display = Display();
     _waitForImage = false;
+    _secure = null;
+    _direct = null;
     clearPermissions();
   }
 
+  void setConnectionType(bool secure, bool direct) {
+    _secure = secure;
+    _direct = direct;
+  }
+
+  Image getConnectionImage() {
+    String icon;
+    if (secure == true && direct == true) {
+      icon = 'secure';
+    } else if (secure == false && direct == true) {
+      icon = 'insecure';
+    } else if (secure == false && direct == false) {
+      icon = 'insecure_relay';
+    } else if (secure == true && direct == false) {
+      icon = 'secure_relay';
+    }
+    return icon == null
+        ? null
+        : Image.asset('assets/$icon.png', width: 48, height: 48);
+  }
+
   void clearPermissions() {
     _permissions.clear();
   }
@@ -71,7 +98,10 @@ class FfiModel with ChangeNotifier {
   void update(
       String id,
       BuildContext context,
-      void Function(Map<String, dynamic> evt, String id, BuildContext context)
+      void Function(
+    Map<String, dynamic> evt,
+    String id,
+  )
           handleMsgbox) {
     var pos;
     for (;;) {
@@ -79,9 +109,12 @@ class FfiModel with ChangeNotifier {
       if (evt == null) break;
       var name = evt['name'];
       if (name == 'msgbox') {
-        handleMsgbox(evt, id, context);
+        handleMsgbox(evt, id);
       } else if (name == 'peer_info') {
         handlePeerInfo(evt, context);
+      } else if (name == 'connection_ready') {
+        FFI.ffiModel.setConnectionType(
+            evt['secure'] == 'true', evt['direct'] == 'true');
       } else if (name == 'switch_display') {
         handleSwitchDisplay(evt);
       } else if (name == 'cursor_data') {

flutter_hbb/lib/remote_page.dart

@@ -86,7 +86,7 @@ class _RemotePageState extends State<RemotePage> {
     FFI.ffiModel.update(widget.id, context, handleMsgbox);
   }
 
-  void handleMsgbox(Map<String, dynamic> evt, String id, BuildContext context) {
+  void handleMsgbox(Map<String, dynamic> evt, String id) {
     var type = evt['type'];
     var title = evt['title'];
     var text = evt['text'];
@@ -95,25 +95,29 @@ class _RemotePageState extends State<RemotePage> {
     } else if (type == 'input-password') {
       enterPasswordDialog(id, context);
     } else {
-      msgbox(type, title, text, context);
-      final hasRetry = type == "error" &&
-          title == "Connection Error" &&
-          text.toLowerCase().indexOf("offline") < 0 &&
-          text.toLowerCase().indexOf("exist") < 0 &&
-          text.toLowerCase().indexOf("handshake") < 0 &&
-          text.toLowerCase().indexOf("failed") < 0 &&
-          text.toLowerCase().indexOf("resolve") < 0 &&
-          text.toLowerCase().indexOf("manually") < 0;
-      if (hasRetry) {
-        _timer?.cancel();
-        _timer = Timer(Duration(seconds: _reconnects), () {
-          FFI.reconnect();
-          showLoading('Connecting...', context);
-        });
-        _reconnects *= 2;
-      } else {
-        _reconnects = 1;
-      }
+      showMsgBox(type, title, text);
+    }
+  }
+
+  Future<Null> showMsgBox(String type, String title, String text) async {
+    await msgbox(type, title, text, context);
+    final hasRetry = type == "error" &&
+        title == "Connection Error" &&
+        text.toLowerCase().indexOf("offline") < 0 &&
+        text.toLowerCase().indexOf("exist") < 0 &&
+        text.toLowerCase().indexOf("handshake") < 0 &&
+        text.toLowerCase().indexOf("failed") < 0 &&
+        text.toLowerCase().indexOf("resolve") < 0 &&
+        text.toLowerCase().indexOf("manually") < 0;
+    if (hasRetry) {
+      _timer?.cancel();
+      _timer = Timer(Duration(seconds: _reconnects), () {
+        FFI.reconnect();
+        showLoading('Connecting...', context);
+      });
+      _reconnects *= 2;
+    } else {
+      _reconnects = 1;
     }
   }
 
@@ -330,7 +334,7 @@ class _RemotePageState extends State<RemotePage> {
           minWidth: 0, //wraps child's width
           height: 0,
           child: FlatButton(
-              splashColor: Colors.black,
+              splashColor: MyTheme.accent,
               shape: RoundedRectangleBorder(
                 borderRadius: BorderRadius.circular(5.0),
               ),
@@ -620,6 +624,9 @@ void showOptions(BuildContext context) {
   if (quality == '') quality = 'balanced';
   var displays = <Widget>[];
   final pi = FFI.ffiModel.pi;
+  final image = FFI.ffiModel.getConnectionImage();
+  if (image != null)
+    displays.add(Padding(padding: const EdgeInsets.only(top: 8), child: image));
   if (pi.displays.length > 1) {
     final cur = pi.currentDisplay;
     final children = <Widget>[];
@@ -647,6 +654,8 @@ void showOptions(BuildContext context) {
           spacing: 8,
           children: children,
         )));
+  }
+  if (displays.isNotEmpty) {
     displays.add(Divider(color: MyTheme.border));
   }
   showAlertDialog(context, (setState) {