Adding index builder

.gitignore

@@ -18,7 +18,7 @@
 # The .vscode folder contains launch configuration and tasks you configure in
 # VS Code which you may wish to be included in version control, so this line
 # is commented out by default.
-#.vscode/
+.vscode/
 
 # Flutter/Dart/Pub related
 **/doc/api/
@@ -72,3 +72,5 @@ build/
 !**/ios/**/default.mode2v3
 !**/ios/**/default.pbxuser
 !**/ios/**/default.perspectivev3
+
+.fvm/

lib/src/az_listview.dart

@@ -28,6 +28,8 @@ class AzListView extends StatefulWidget {
     this.indexBarAlignment = Alignment.centerRight,
     this.indexBarMargin,
     this.indexBarOptions = const IndexBarOptions(),
+    this.indexBuilder,
+    this.shrinkWrap = false,
   }) : super(key: key);
 
   /// with  ISuspensionBean Data
@@ -93,6 +95,13 @@ class AzListView extends StatefulWidget {
   /// IndexBar options.
   final IndexBarOptions indexBarOptions;
 
+  /// The builder of index.
+  final IndexWidgetBuilder? indexBuilder;
+  /// The shrinkWrap of list.
+  /// 
+  /// The default value is [false].
+  final bool shrinkWrap;
+
   @override
   _AzListViewState createState() => _AzListViewState();
 }
@@ -193,6 +202,7 @@ class _AzListViewState extends State<AzListView> {
           susPosition: widget.susPosition,
           padding: widget.padding,
           physics: widget.physics,
+          shrinkWrap: widget.shrinkWrap,
         ),
         Align(
           alignment: widget.indexBarAlignment,
@@ -206,6 +216,7 @@ class _AzListViewState extends State<AzListView> {
             indexBarDragListener: dragListener,
             options: widget.indexBarOptions,
             controller: indexBarController,
+            builder: widget.indexBuilder,
           ),
         ),
       ],

lib/src/index_bar.dart

@@ -8,6 +8,7 @@ import 'package:flutter/services.dart';
 
 /// IndexHintBuilder.
 typedef IndexHintBuilder = Widget Function(BuildContext context, String tag);
+typedef IndexWidgetBuilder = Widget Function(BuildContext context, int index);
 
 /// IndexBarDragListener.
 abstract class IndexBarDragListener {
@@ -234,6 +235,7 @@ class IndexBar extends StatefulWidget {
     IndexBarDragListener? indexBarDragListener,
     this.options = const IndexBarOptions(),
     this.controller,
+    this.builder,
   })  : indexBarDragNotifier = indexBarDragListener as IndexBarDragNotifier?,
         super(key: key);
 
@@ -264,6 +266,9 @@ class IndexBar extends StatefulWidget {
   /// IndexBarController. If non-null, this can be used to control the state of the IndexBar.
   final IndexBarController? controller;
 
+  /// The builder of index.
+  final IndexWidgetBuilder? builder; 
+
   @override
   _IndexBarState createState() => _IndexBarState();
 }
@@ -280,7 +285,7 @@ class _IndexBarState extends State<IndexBar> {
   @override
   void initState() {
     super.initState();
-    widget.indexBarDragNotifier?.dragDetails?.addListener(_valueChanged);
+    widget.indexBarDragNotifier?.dragDetails.addListener(_valueChanged);
     widget.controller?._attach(this);
   }
 
@@ -319,7 +324,7 @@ class _IndexBarState extends State<IndexBar> {
   void dispose() {
     widget.controller?._detach();
     _removeOverlay();
-    widget.indexBarDragNotifier?.dragDetails?.removeListener(_valueChanged);
+    widget.indexBarDragNotifier?.dragDetails.removeListener(_valueChanged);
     super.dispose();
   }
 
@@ -466,7 +471,7 @@ class _IndexBarState extends State<IndexBar> {
         width: widget.width,
         itemHeight: widget.itemHeight,
         hapticFeedback: widget.options.hapticFeedback,
-        itemBuilder: (BuildContext context, int index) {
+        itemBuilder: widget.builder ?? (BuildContext context, int index) {
           return _buildItem(context, index);
         },
         indexBarDragNotifier: widget.indexBarDragNotifier,
@@ -527,7 +532,7 @@ class _BaseIndexBarState extends State<BaseIndexBar> {
             action == IndexBarDragDetails.actionUpdate)) {
       HapticFeedback.vibrate();
     }
-    widget.indexBarDragNotifier?.dragDetails?.value = IndexBarDragDetails(
+    widget.indexBarDragNotifier?.dragDetails.value = IndexBarDragDetails(
       action: action,
       index: lastIndex,
       tag: widget.data[lastIndex],
@@ -590,9 +595,11 @@ class _BaseIndexBarState extends State<BaseIndexBar> {
         //_triggerDragEvent(IndexBarDragDetails.actionUp);
       },
       behavior: HitTestBehavior.translucent,
-      child: Column(
-        mainAxisSize: MainAxisSize.min,
-        children: children,
+      child: SingleChildScrollView(
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: children,
+        ),
       ),
     );
   }

lib/src/suspension_view.dart

@@ -19,6 +19,7 @@ class SuspensionView extends StatefulWidget {
     this.susPosition,
     this.physics,
     this.padding,
+    this.shrinkWrap = false,
   }) : super(key: key);
 
   /// Suspension data.
@@ -56,6 +57,10 @@ class SuspensionView extends StatefulWidget {
 
   /// The amount of space by which to inset the children.
   final EdgeInsets? padding;
+  /// The shrinkWrap of list.
+  /// 
+  /// Default value is [false].
+  final bool shrinkWrap;
 
   @override
   _SuspensionViewState createState() => _SuspensionViewState();
@@ -112,7 +117,7 @@ class _SuspensionViewState extends State<SuspensionView> {
             ISuspensionBean bean = widget.data[next];
             if (bean.isShowSuspension) {
               double height =
-                  context.findRenderObject()?.paintBounds?.height ?? 0;
+                  context.findRenderObject()?.paintBounds.height ?? 0;
               double topTemp = itemPosition.itemTrailingEdge * height;
               top = math.min(widget.susItemHeight, topTemp) -
                   widget.susItemHeight;
@@ -157,6 +162,7 @@ class _SuspensionViewState extends State<SuspensionView> {
                 itemPositionsListener: itemPositionsListener,
                 physics: widget.physics,
                 padding: widget.padding,
+                shrinkWrap: widget.shrinkWrap,
               ),
         _buildSusWidget(context),
       ],

pubspec.lock

@@ -5,51 +5,51 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0"
+    version: "1.16.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -64,35 +64,35 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "0.12.11"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "0.1.4"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.1"
   scrollable_positioned_list:
     dependency: "direct main"
     description:
       name: scrollable_positioned_list
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "0.2.3"
   sky_engine:
@@ -104,58 +104,51 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.8"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.0"
+    version: "0.4.9"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.flutter-io.cn"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
 sdks:
-  dart: ">=2.14.0 <3.0.0"
+  dart: ">=2.17.0-0 <3.0.0"
   flutter: ">=1.13.8"

pubspec.yaml

@@ -1,6 +1,6 @@
 name: azlistview
 description: A Flutter sticky headers & index ListView. IndexBar. such as citylist, contactlist. index and hover effect.
-version: 2.0.0
+version: 2.0.1
 homepage: https://github.com/flutterchina/azlistview
 
 environment:
@@ -10,7 +10,7 @@ dependencies:
   flutter:
     sdk: flutter
   # https://pub.flutter-io.cn/packages/scrollable_positioned_list
-  scrollable_positioned_list: ^0.2.3
+  scrollable_positioned_list: ^0.3.2
 
 dev_dependencies:
   flutter_test: