Separate out the NodeWidget from this package

Author: sbis04

Diff for: .gitignore

@@ -1,3 +1,5 @@
 .dart_tool/
 example/.dart_tool/
 example/build/
+example/.flutter-plugins-dependencies
+example/.flutter-plugins

Diff for: example/.flutter-plugins

@@ -70,6 +70,13 @@ class _TreeFromJsonState extends State<TreeFromJson> {
       return TreeView(
         treeController: _treeController,
         nodes: toTreeNodes(parsedJson),
+        nodeBuilder: (context, flattenedNode) => ListTile(
+          title: Text(flattenedNode.node.name),
+          onTap: () {
+            _treeController.toggleNodeExpanded(
+                flattenedNode.node.key!, flattenedNode.node.name);
+          },
+        ),
       );
     } on FormatException catch (e) {
       return Text(e.message);

Diff for: example/.flutter-plugins-dependencies

@@ -33,7 +33,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.0.0"
+    version: "2.1.0"
   material_color_utilities:
     dependency: transitive
     description:

Diff for: example/lib/trees/tree_from_json.dart

@@ -8,5 +8,4 @@ export 'src/primitives/tree_controller.dart';
 export 'src/primitives/tree_node.dart';
 export 'src/tree_view.dart';
 export 'src/search_tree_nodes.dart';
-export 'src/node_widget.dart';
 export 'src/node_style.dart';

Diff for: example/pubspec.lock

@@ -1,8 +1,6 @@
 import 'package:flutter/material.dart';
 
 import 'copy_tree_nodes.dart';
-import 'node_style.dart';
-import 'node_widget.dart';
 import 'primitives/tree_controller.dart';
 import 'primitives/tree_node.dart';
 
@@ -12,20 +10,21 @@ class TreeView extends StatelessWidget {
   ///
   /// - [nodes] parameter is a required list of [TreeNode] objects that represent the nodes in the tree.
   /// - [treeController] parameter is an optional [TreeController] object that controls the behavior of the tree view.
-  /// - [style] parameter is an optional [TreeViewStyle] object that defines the style of the tree view.
+  /// - [nodeBuilder] parameter is a required function that builds a widget for each tree node.
   TreeView({
     super.key,
     required List<TreeNode> nodes,
     required this.treeController,
-    this.style,
+    required this.nodeBuilder,
     this.listPadding,
   }) : nodes = copyTreeNodes(nodes);
 
   /// List of root level tree nodes.
   final List<TreeNode> nodes;
 
-  /// The style to be applied to the tree view.
-  final NodeStyle? style;
+  /// Builder function to create a widget for each tree node.
+  final Widget Function(BuildContext context, FlattenTreeNode flattenedNode)
+      nodeBuilder;
 
   /// Tree controller to manage the tree state.
   final TreeController treeController;
@@ -35,21 +34,15 @@ class TreeView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final nodeStyle = style ?? NodeStyle(arrowIconSize: 16, levelIndent: 16);
-    final flattenedTree = FlattenTreeNode.getFlattenedTree(
+    final flattenedTreeNode = FlattenTreeNode.getFlattenedTree(
       nodes,
       treeController,
     );
     return ListView.builder(
       padding: listPadding ?? EdgeInsets.zero,
-      itemCount: flattenedTree.length,
-      itemBuilder: (context, index) => NodeWidget(
-        key: flattenedTree[index].key,
-        treeNode: flattenedTree[index].node,
-        state: treeController,
-        level: flattenedTree[index].level,
-        style: nodeStyle,
-      ),
+      itemCount: flattenedTreeNode.length,
+      itemBuilder: (context, index) =>
+          nodeBuilder(context, flattenedTreeNode[index]),
     );
   }
 }