refactor: replace MultiChildNavigationData with WidgetbookNode (#833

)

packages/widgetbook/CHANGELOG.md

@@ -1,5 +1,6 @@
 ## Unreleased
 
+ - **REFACTOR**: Replace `MultiChildNavigationData` with `WidgetbookNode`. ([#833](https://github.com/widgetbook/widgetbook/pull/833))
  - **REFACTOR**: Deprecate `WidgetbookUseCase.center` in favor of [AlignmentAddon]. ([#826](https://github.com/widgetbook/widgetbook/pull/826))
  - **FIX**: Ensure widget is mounted on change. ([#814](https://github.com/widgetbook/widgetbook/pull/814))
  - **FIX**: Allow commas in `string` knobs. ([#817](https://github.com/widgetbook/widgetbook/pull/817))

packages/widgetbook/lib/src/navigation/icons/resolve_icon.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+
+import '../nodes/nodes.dart';
+import 'component_icon.dart';
+import 'use_case_icon.dart';
+
+Widget resolveIcon(WidgetbookNode node) {
+  switch (node.runtimeType) {
+    case WidgetbookPackage:
+      return const Icon(Icons.inventory, size: 16);
+    case WidgetbookCategory:
+      return const Icon(Icons.auto_awesome_mosaic, size: 16);
+    case WidgetbookFolder:
+      return const Icon(Icons.folder, size: 16);
+    case WidgetbookComponent:
+      return const ComponentIcon();
+    case WidgetbookUseCase:
+      return const UseCaseIcon();
+    default:
+      return const SizedBox();
+  }
+}

packages/widgetbook/lib/src/navigation/navigation.dart

@@ -1,4 +1,3 @@
-export 'directories/directories.dart';
 export 'icons/icons.dart';
-export 'models/models.dart';
+export 'nodes/nodes.dart';
 export 'widgets/widgets.dart';

packages/widgetbook/lib/src/navigation/directories/directories.dart → packages/widgetbook/lib/src/navigation/nodes/nodes.dart

@@ -1,5 +1,7 @@
 export 'widgetbook_category.dart';
 export 'widgetbook_component.dart';
 export 'widgetbook_folder.dart';
+export 'widgetbook_node.dart';
 export 'widgetbook_package.dart';
+export 'widgetbook_root.dart';
 export 'widgetbook_use_case.dart';

packages/widgetbook/lib/src/navigation/nodes/widgetbook_category.dart

@@ -0,0 +1,21 @@
+import 'widgetbook_node.dart';
+
+class WidgetbookCategory extends WidgetbookNode {
+  WidgetbookCategory({
+    required super.name,
+    required super.children,
+    super.isInitiallyExpanded,
+  });
+
+  @override
+  WidgetbookCategory copyWith({
+    String? name,
+    List<WidgetbookNode>? children,
+  }) {
+    return WidgetbookCategory(
+      name: name ?? this.name,
+      children: children ?? this.children,
+      isInitiallyExpanded: isInitiallyExpanded,
+    );
+  }
+}

packages/widgetbook/lib/src/navigation/nodes/widgetbook_component.dart

@@ -0,0 +1,26 @@
+import 'widgetbook_node.dart';
+import 'widgetbook_use_case.dart';
+
+class WidgetbookComponent extends WidgetbookNode {
+  WidgetbookComponent({
+    required super.name,
+    required this.useCases,
+    super.isInitiallyExpanded,
+  }) : super(
+          children: useCases,
+        );
+
+  final List<WidgetbookUseCase> useCases;
+
+  @override
+  WidgetbookComponent copyWith({
+    String? name,
+    List<WidgetbookNode>? children,
+  }) {
+    return WidgetbookComponent(
+      name: name ?? this.name,
+      useCases: children?.cast<WidgetbookUseCase>() ?? this.useCases,
+      isInitiallyExpanded: isInitiallyExpanded,
+    );
+  }
+}

packages/widgetbook/lib/src/navigation/nodes/widgetbook_folder.dart

@@ -0,0 +1,21 @@
+import 'widgetbook_node.dart';
+
+class WidgetbookFolder extends WidgetbookNode {
+  WidgetbookFolder({
+    required super.name,
+    required super.children,
+    super.isInitiallyExpanded,
+  });
+
+  @override
+  WidgetbookFolder copyWith({
+    String? name,
+    List<WidgetbookNode>? children,
+  }) {
+    return WidgetbookFolder(
+      name: name ?? this.name,
+      children: children ?? this.children,
+      isInitiallyExpanded: isInitiallyExpanded,
+    );
+  }
+}