opt. & new: icons

lib/view/widget/store_switch.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
+import 'package:toolbox/view/widget/val_builder.dart';
 
 import '../../core/persistant_store.dart';
 
@@ -22,9 +23,9 @@ class StoreSwitch extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return ValueListenableBuilder(
-      valueListenable: prop.listenable(),
-      builder: (context, bool value, widget) {
+    return ValBuilder(
+      listenable: prop.listenable(),
+      builder: (value) {
         return Switch(
           value: value,
           onChanged: (value) async {

lib/view/widget/tag.dart

@@ -5,6 +5,7 @@ import 'package:toolbox/core/extension/context/locale.dart';
 import 'package:toolbox/data/res/ui.dart';
 import 'package:toolbox/view/widget/input_field.dart';
 import 'package:toolbox/view/widget/cardx.dart';
+import 'package:toolbox/view/widget/val_builder.dart';
 
 import '../../data/res/color.dart';
 
@@ -196,9 +197,9 @@ class TagSwitcher extends StatelessWidget implements PreferredSizeWidget {
 
   @override
   Widget build(BuildContext context) {
-    return ValueListenableBuilder(
-      valueListenable: tags,
-      builder: (_, vals, __) {
+    return ValBuilder(
+      listenable: tags,
+      builder: (vals) {
         if (vals.isEmpty) return UIs.placeholder;
         final items = <String?>[null, ...vals];
         return Container(

lib/view/widget/val_builder.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+final class ValBuilder<T> extends ValueListenableBuilder<T> {
+  ValBuilder({
+    super.key,
+    required ValueListenable<T> listenable,
+    required Widget Function(T) builder,
+  }) : super(
+          valueListenable: listenable,
+          builder: (_, val, __) => builder(val),
+        );
+}
+
+final class ValChildBuilder<T> extends ValueListenableBuilder<T> {
+  ValChildBuilder({
+    super.key,
+    required ValueListenable<T> listenable,
+    required Widget Function(T, Widget?) builder,
+    super.child,
+  }) : super(
+          valueListenable: listenable,
+          builder: (_, val, child) => builder(val, child),
+        );
+}
+
+final class ListenBuilder extends ListenableBuilder {
+  ListenBuilder({
+    super.key,
+    required super.listenable,
+    required Widget Function() builder,
+  }) : super(
+          builder: (_, __) => builder(),
+        );
+}