Linter: fix curly_braces_in_flow_control_structures issue

analysis_options.yaml

@@ -30,6 +30,7 @@ analyzer:
   errors:
     avoid_empty_else: error
     exhaustive_cases: error
+    curly_braces_in_flow_control_structures: error
     unused_import: warning
     prefer_is_empty: warning
     use_rethrow_when_possible: info

lib/ui/expansion_card.dart

@@ -146,8 +146,9 @@ class _ExpansionTileState extends State<ExpansionCard>
       }
       PageStorage.of(context)?.writeState(context, _isExpanded);
     });
-    if (widget.onExpansionChanged != null)
+    if (widget.onExpansionChanged != null) {
       widget.onExpansionChanged(_isExpanded);
+    }
   }
 
   Widget _buildChildren(BuildContext context, Widget child) {

lib/ui/huge_listview/draggable_scrollbar.dart

@@ -112,14 +112,16 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
   }
 
   Widget buildKeyboard() {
-    if (defaultTargetPlatform == TargetPlatform.windows)
+    if (defaultTargetPlatform == TargetPlatform.windows) {
       return RawKeyboardListener(
         focusNode: FocusNode(),
         onKey: keyHandler,
         child: buildThumb(),
       );
-    else
+    } else {
       return buildThumb();
+    }
+
   }
 
   Widget buildThumb() => Container(
@@ -188,26 +190,27 @@ class DraggableScrollbarState extends State<DraggableScrollbar>
 
   void keyHandler(RawKeyEvent value) {
     if (value.runtimeType == RawKeyDownEvent) {
-      if (value.logicalKey == LogicalKeyboardKey.arrowDown)
+      if (value.logicalKey == LogicalKeyboardKey.arrowDown) {
         onDragUpdate(DragUpdateDetails(
           globalPosition: Offset.zero,
           delta: Offset(0, 2),
         ));
-      else if (value.logicalKey == LogicalKeyboardKey.arrowUp)
+      } else if (value.logicalKey == LogicalKeyboardKey.arrowUp) {
         onDragUpdate(DragUpdateDetails(
           globalPosition: Offset.zero,
           delta: Offset(0, -2),
         ));
-      else if (value.logicalKey == LogicalKeyboardKey.pageDown)
+      } else if (value.logicalKey == LogicalKeyboardKey.pageDown) {
         onDragUpdate(DragUpdateDetails(
           globalPosition: Offset.zero,
           delta: Offset(0, 25),
         ));
-      else if (value.logicalKey == LogicalKeyboardKey.pageUp)
+      } else if (value.logicalKey == LogicalKeyboardKey.pageUp) {
         onDragUpdate(DragUpdateDetails(
           globalPosition: Offset.zero,
           delta: Offset(0, -25),
         ));
+      }
     }
   }
 }

lib/ui/huge_listview/huge_listview.dart

@@ -105,12 +105,15 @@ class HugeListViewState<T> extends State<HugeListView<T>> {
 
   @override
   Widget build(BuildContext context) {
-    if (error != null && widget.errorBuilder != null)
+    if (error != null && widget.errorBuilder != null) {
       return widget.errorBuilder(context, error);
-    if (widget.totalCount == -1 && widget.waitBuilder != null)
+    }
+    if (widget.totalCount == -1 && widget.waitBuilder != null) {
       return widget.waitBuilder(context);
-    if (widget.totalCount == 0 && widget.emptyResultBuilder != null)
+    }
+    if (widget.totalCount == 0 && widget.emptyResultBuilder != null) {
       return widget.emptyResultBuilder(context);
+    }
 
     return LayoutBuilder(
       builder: (context, constraints) {

lib/ui/nav_bar.dart

@@ -329,10 +329,11 @@ class _ButtonState extends State<Button> with TickerProviderStateMixin {
         .value;
 
     _expanded = !widget.active;
-    if (_expanded)
+    if (_expanded) {
       expandController.reverse();
-    else
+    } else {
       expandController.forward();
+    }
 
     Widget icon = widget.leading ??
         Icon(

lib/ui/video_controls.dart

@@ -141,8 +141,9 @@ class _VideoControlsState extends State<VideoControls> {
               setState(() {
                 _hideStuff = true;
               });
-            } else
+            } else {
               _cancelAndRestartTimer();
+            }
           } else {
             _playPause();