added time-to-take-action 3s option;

use stretch over bouncing overscroll;
fixed time shift wheel scroll bar

lib/model/settings/enums/accessibility_timeout.dart

@@ -10,6 +10,8 @@ extension ExtraAccessibilityTimeout on AccessibilityTimeout {
         return context.l10n.settingsSystemDefault;
       case AccessibilityTimeout.appDefault:
         return context.l10n.settingsDefault;
+      case AccessibilityTimeout.s3:
+        return context.l10n.timeSeconds(3);
       case AccessibilityTimeout.s10:
         return context.l10n.timeSeconds(10);
       case AccessibilityTimeout.s30:

lib/model/settings/enums/enums.dart

@@ -1,6 +1,6 @@
 enum AccessibilityAnimations { system, disabled, enabled }
 
-enum AccessibilityTimeout { system, appDefault, s10, s30, s60, s120 }
+enum AccessibilityTimeout { system, appDefault, s3, s10, s30, s60, s120 }
 
 enum AvesThemeColorMode { monochrome, polychrome }
 

lib/widgets/collection/filter_bar.dart

@@ -81,14 +81,13 @@ class _FilterBarState extends State<FilterBar> {
       color: Colors.transparent,
       height: FilterBar.preferredHeight,
       child: NotificationListener<ScrollNotification>(
-        // cancel notification bubbling so that the draggable scrollbar
+        // cancel notification bubbling so that the draggable scroll bar
         // does not misinterpret filter bar scrolling for collection scrolling
         onNotification: (notification) => true,
         child: AnimatedList(
           key: _animatedListKey,
           initialItemCount: widget.filters.length,
           scrollDirection: Axis.horizontal,
-          physics: const BouncingScrollPhysics(),
           padding: const EdgeInsets.symmetric(horizontal: 4),
           itemBuilder: (context, index, animation) {
             if (index >= widget.filters.length) return const SizedBox();

lib/widgets/common/action_mixins/feedback.dart

@@ -105,6 +105,8 @@ mixin FeedbackMixin {
         return Duration(milliseconds: millis);
       case AccessibilityTimeout.appDefault:
         return appDefaultDuration;
+      case AccessibilityTimeout.s3:
+        return const Duration(seconds: 3);
       case AccessibilityTimeout.s10:
         return const Duration(seconds: 10);
       case AccessibilityTimeout.s30:

lib/widgets/common/basic/wheel.dart

@@ -41,39 +41,51 @@ class _WheelSelectorState<T> extends State<WheelSelector<T>> {
     const background = Colors.transparent;
     final foreground = DefaultTextStyle.of(context).style.color!;
 
-    return Padding(
+    return NotificationListener<ScrollNotification>(
-      padding: const EdgeInsets.all(8),
+      // cancel notification bubbling so that the dialog scroll bar
-      child: SizedBox(
+      // does not misinterpret wheel scrolling for dialog content scrolling
-        width: itemSize.width,
+      onNotification: (notification) => true,
-        height: itemSize.height * 3,
+      child: Padding(
-        child: ShaderMask(
+        padding: const EdgeInsets.all(8),
-          shaderCallback: LinearGradient(
+        child: SizedBox(
-            begin: Alignment.topCenter,
+          width: itemSize.width,
-            end: Alignment.bottomCenter,
+          height: itemSize.height * 3,
-            colors: [
+          child: ShaderMask(
-              background,
+            shaderCallback: LinearGradient(
-              foreground,
+              begin: Alignment.topCenter,
-              foreground,
+              end: Alignment.bottomCenter,
-              background,
+              colors: [
-            ],
+                background,
-          ).createShader,
+                foreground,
-          child: ListWheelScrollView(
+                foreground,
-            controller: _controller,
+                background,
-            physics: const FixedExtentScrollPhysics(parent: BouncingScrollPhysics()),
+              ],
-            diameterRatio: 1.2,
+            ).createShader,
-            itemExtent: itemSize.height,
+            child: Theme(
-            squeeze: 1.3,
+              data: Theme.of(context).copyWith(
-            onSelectedItemChanged: (i) => valueNotifier.value = values[i],
+                scrollbarTheme: ScrollbarThemeData(
-            children: values
+                  thumbVisibility: MaterialStateProperty.all(false),
-                .map((i) => SizedBox.fromSize(
+                ),
-                      size: itemSize,
+              ),
-                      child: Text(
+              child: ListWheelScrollView(
-                        '$i',
+                controller: _controller,
-                        textAlign: widget.textAlign,
+                physics: const FixedExtentScrollPhysics(parent: BouncingScrollPhysics()),
-                        style: widget.textStyle,
+                diameterRatio: 1.2,
-                      ),
+                itemExtent: itemSize.height,
-                    ))
+                squeeze: 1.3,
-                .toList(),
+                onSelectedItemChanged: (i) => valueNotifier.value = values[i],
+                children: values
+                    .map((i) => SizedBox.fromSize(
+                          size: itemSize,
+                          child: Text(
+                            '$i',
+                            textAlign: widget.textAlign,
+                            style: widget.textStyle,
+                          ),
+                        ))
+                    .toList(),
+              ),
+            ),
           ),
         ),
       ),

lib/widgets/common/expandable_filter_row.dart

@@ -78,7 +78,6 @@ class ExpandableFilterRow extends StatelessWidget {
       height: AvesFilterChip.minChipHeight,
       child: ListView.separated(
         scrollDirection: Axis.horizontal,
-        physics: const BouncingScrollPhysics(),
         padding: const EdgeInsets.symmetric(horizontal: horizontalPadding),
         itemBuilder: (context, index) {
           return index < filterList.length ? _buildFilterChip(filterList[index]) : const SizedBox();

lib/widgets/dialogs/aves_dialog.dart

@@ -5,7 +5,7 @@ import 'package:flutter/material.dart';
 
 class AvesDialog extends StatelessWidget {
   final String? title;
-  final ScrollController? scrollController;
+  final ScrollController scrollController;
   final List<Widget>? scrollableContent;
   final bool hasScrollBar;
   final double horizontalContentPadding;
@@ -16,16 +16,17 @@ class AvesDialog extends StatelessWidget {
   static const double controlCaptionPadding = 16;
   static const double borderWidth = 1.0;
 
-  const AvesDialog({
+  AvesDialog({
     super.key,
     this.title,
-    this.scrollController,
+    ScrollController? scrollController,
     this.scrollableContent,
     this.hasScrollBar = true,
     this.horizontalContentPadding = defaultHorizontalContentPadding,
     this.content,
     required this.actions,
-  }) : assert((scrollableContent != null) ^ (content != null));
+  })  : assert((scrollableContent != null) ^ (content != null)),
+        scrollController = scrollController ?? ScrollController();
 
   @override
   Widget build(BuildContext context) {
@@ -56,10 +57,8 @@ class AvesDialog extends StatelessWidget {
     }
 
     if (scrollableContent != null) {
-      final _scrollController = scrollController ?? ScrollController();
-
       Widget child = ListView(
-        controller: _scrollController,
+        controller: scrollController,
         shrinkWrap: true,
         children: scrollableContent!,
       );
@@ -76,7 +75,14 @@ class AvesDialog extends StatelessWidget {
             ),
           ),
           child: Scrollbar(
-            controller: _scrollController,
+            controller: scrollController,
+            notificationPredicate: (notification) {
+              // as of Flutter v3.0.1, the `Scrollbar` does not only respond to the nearest `ScrollView`
+              // despite the `defaultScrollNotificationPredicate` checking notification depth,
+              // as the notifications coming from the controller in `ListWheelScrollView` in `WheelSelector` still have a depth of 0.
+              // Cancelling notification bubbling seems ineffective, so we check the metrics type as a workaround.
+              return defaultScrollNotificationPredicate(notification) && notification.metrics is! FixedExtentMetrics;
+            },
             child: child,
           ),
         );

lib/widgets/settings/privacy/file_picker/crumb_line.dart

@@ -54,7 +54,6 @@ class _CrumbLineState extends State<CrumbLine> {
       child: ListView.builder(
         scrollDirection: Axis.horizontal,
         controller: _controller,
-        physics: const BouncingScrollPhysics(),
         padding: const EdgeInsets.symmetric(horizontal: 8),
         itemBuilder: (context, index) {
           Widget _buildText(String text) => Padding(