Create management portal in Flutter #39

web/repertory/lib/screens/add_mount_screen.dart

@@ -67,7 +67,9 @@ class _AddMountScreenState extends State<AddMountScreen> {
                     const SizedBox(width: constants.padding),
                     DropdownButton<String>(
                       value: _mountType,
-                      onChanged: (mountType) => _handleChange(mountType ?? ''),
+                      onChanged: (mountType) {
+                        _handleChange(mountType ?? '');
+                      },
                       items:
                           constants.providerTypeList
                               .map<DropdownMenuItem<String>>((item) {
@@ -185,8 +187,17 @@ class _AddMountScreenState extends State<AddMountScreen> {
   }
 
   void _handleChange(String mountType) {
+    if (_mountType == mountType) {
+      return;
+    }
+
     setState(() {
       _mountType = mountType;
+      _mountNameController.text =
+          (mountType == 'Sia' && _mountNameController.text.isEmpty)
+              ? 'default'
+              : '';
+
       _mount =
           (_mountNameController.text.isEmpty)
               ? null