style: small refactor in level_selection

lib/screens/level_selection.dart

@@ -78,6 +78,16 @@ class _LevelSelectionState extends State<LevelSelection> {
     }
   }
 
+  void filterLevels(String input) {
+    setState(() {
+      stepmaniaCoursesFoldersFiltered = stepmaniaCoursesFolders
+          .where((simfile) => simfile.tags["TITLE"]!
+              .toLowerCase()
+              .contains(input.toLowerCase()))
+          .toList();
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -111,15 +121,7 @@ class _LevelSelectionState extends State<LevelSelection> {
                 padding:
                     const EdgeInsets.symmetric(horizontal: 16.0, vertical: 0.0),
                 child: TextField(
-                  onChanged: (input) {
-                    setState(() {
-                      stepmaniaCoursesFoldersFiltered = stepmaniaCoursesFolders
-                          .where((simfile) => simfile.tags["TITLE"]!
-                              .toLowerCase()
-                              .contains(input.toLowerCase()))
-                          .toList();
-                    });
-                  },
+                  onChanged: filterLevels,
                   decoration: InputDecoration(
                       // icon: Icon(Icons.search),
                       hintText: 'Search'),
@@ -151,7 +153,10 @@ class _LevelSelectionState extends State<LevelSelection> {
         }
       }),
       floatingActionButton: FloatingActionButton(
-          onPressed: () => {selectFolder()}, child: Icon(Icons.add)),
+          onPressed: () {
+            selectFolder();
+          },
+          child: Icon(Icons.add)),
     );
   }
 }

lib/widgets/esense_connect_dialog.dart

@@ -40,7 +40,7 @@ class _ESenseConnectDialogState extends State<ESenseConnectDialog> {
       actions: <Widget>[
         TextButton(
           onPressed: () => Navigator.pop(context, 'Cancel'),
-          child: const Text('Discard'),
+          child: const Text('Close'),
         ),
         TextButton(
           onPressed: () => widget.connect(eSenseDeviceName),