https://app.leanboard.io/board/ada61473-1590-4f90-a128-8fc6d05d916e

当前git里example的代码，使用pub.dev上2.0.3的版本，参数不匹配，是不是要发个新版到pub？

First of all, appreciate that you have done such an amazing repo. However, I figured out that there is a typo that expanded miss typed with expaned. I noticed that the PR to fix it has already been merged. I think it is better to release a new version, thanks!

Hi, is there gonna be a new release on pub.dev?

@xrr2016 Some PRs like #19 #20 #21 #22 #23 have been merged but not yet published, if you can't maintain this any more just let me know, I can take it over.

Thanks!

I need all the checkboxes below a parent node to update their checked state when the parent node's state changes. For example, if the parent node checkbox is checked I want to make all the nodes below this parent node to update theirselves to follow the parent node checkbox checked state.

Is it possible to accomplish this with this package?

This plugin is not null safe, can you update it?

Flutter is updated to new versions and now TextTheme does not support lableSmall. Please update your Flutter SDKs and Flutter Plugins after that remove the obsolete code to make it useable with the most number of developers.

/C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_tree-2.0.2/lib/src/tree_node.dart:198:57: Error: The getter 'labelSmall' isn't defined for the class 'TextTheme'.

- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart'). Try correcting the name to the name of an existing getter, or defining a getter or field named 'labelSmall'. Theme.of(context).textTheme.labelSmall?.fontSize,

/C:/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_tree-2.0.2/lib/src/tree_node.dart:212:57: Error: The getter 'labelSmall' isn't defined for the class 'TextTheme'.

- 'TextTheme' is from 'package:flutter/src/material/text_theme.dart' ('/C:/flutter/packages/flutter/lib/src/material/text_theme.dart'). Try correcting the name to the name of an existing getter, or defining a getter or field named 'labelSmall'. Theme.of(context).textTheme.labelSmall?.fontSize,

My Current Flutter Doctor Summary:

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 2.8.1, on Microsoft Windows [Version 10.0.19041.1415], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[√] Chrome - develop for the web
[√] Android Studio (version 4.1)
[√] IntelliJ IDEA Community Edition (version 2021.2)
[√] VS Code (version 1.52.1)
[√] Connected device (3 available)

• No issues found!

我的需求是：点击树节点展开下一层级的时候，children 动态加载
实现方法是：在 tree_node 中添加了 didUpdateWidget 方法来监听 widget 变化
问题：目前只有第二级可以正常加载，第三级就监听不到 children 的变化了……

下面是相关代码：

这是生成TreeNode节点：

TreeNode(
          id: item['id'],
          parentId: item['parentId'],
          name: item['name'],
          count: item['count'] ?? 0,
          checked: item['checked'] ?? false,
          children: item['children'],  // 这个 item['children'] 是在点击展开的时候调用下面的 onExpand 动态赋值的
          onExpand: () {
            if (getDataFunc != null && getDataFunc is Function) {
              getDataFunc(item, i);  //这里会动态请求数据，然后赋值给children
            }
          },
        )

这是TreeNode class 中的 didUpdateWidget，点击展开第一级可以监听到children变化并正确展开第二级，但是点击第二级的时候就监听不到children变化了，children正确赋值了：

 @override
  void didUpdateWidget(MaterialTreeNode oldWidget) {
    if (oldWidget.children != widget.children && widget.children != null) {
      setState(() {
        _children = widget.children;
      });
    }
    super.didUpdateWidget(oldWidget);
  }

不知道我表述清楚了没，请教一下这么实现是ok的吗？为什么第三级不能正确展开呢？

您好，在进行添加子节点的时候，能否弹出对话框，或者设置我要添加的节点内容？或者是否已经实现了，有代码参考吗？

kindly enable the children on tap and dynamic icon functionality

I think that the children list should be nullable, so in that way we will be able to hide the arrow/expand icon.(example image below)
I used SIzedBox.shrink() and deactivate onExpand() as a replacement but the grey circle of touch feedback is still there.

I have tried to feed the list from a http call but I am getting a subtype error :
Futrue<dynamic> is not List<TreeNodeData>.
The code :

  final response = await http.get
    (
      Uri.parse("uri"),
      headers: {"Accept": "application/json", "Content-Type": "application/json"}
  );
  final Iterable mapCollection = jsonDecode(response.body);

List<TreeNodeData> treeData = List.generate (
    mapCollection.length,
        (index) => mapServerDataToTreeData(mapCollection.toList()[index]),
  ).toList();

超过组件高度的区域无法滚动 父级组件为SingleChildScrollView 请问这是什么原因呢

Does not support right to left
Please follow up quickly

Hi Guys ...
For anyone need to use this library with null safety support .. follow these steps :

First : copy files from root directory -> lib -> src and paste in your project

Secound : Go to tree_view.dart

change code in line 18 to this

 const TreeView({
    Key? key,  // add this line
    @required this.data,
    this.titleKey = 'title',
    this.leadingKey = 'leading',
    this.expanedKey = 'expaned',
    this.childrenKey = 'children',
    this.offsetLeft = 24.0,
    this.titleOnTap,
    this.leadingOnTap,
    this.trailingOnTap,
  }) : super(key: key);  // replace with this line

third : Go to tree_node.dart

change code in line 17 to this :

 const TreeNode({ 
    Key? key, // add this line
    this.level = 0,
    this.expaned = false, 
    this.offsetLeft = 24.0,
    this.children = const [],
    this.title = const Text('Title'),
    this.leading = const IconButton(
      icon: Icon(Icons.star_border),
      iconSize: 16,
      onPressed: null,
    ),
    this.trailing = const IconButton(
      icon: Icon(Icons.expand_more),
      iconSize: 16,
      onPressed: null,
    ),
    this.titleOnTap,
    this.leadingOnTap,
    this.trailingOnTap,
  }); : super(key: key); // replace with this line

in line 50 add this:

  @override // add this line
  initState() {
    _isExpaned = widget.expaned;
    _rotationController = AnimationController(
      duration: const Duration(milliseconds: 300),
      vsync: this,
    );
    super.initState();
  }

in line 90 and line 102 :

const SizedBox(width: 6.0), // add const
Expanded(
  child: GestureDetector(
    onTap: () {
      if (widget.titleOnTap != null &&
          widget.titleOnTap is Function) {
        widget.titleOnTap();
      }
    },
    child: widget.title ?? Container(),
  ),
),
const SizedBox(width: 6.0), // add const
Visibility(
  visible: children.isNotEmpty, // replace with isNotEmpty

in line 136 :

Visibility(
  visible: children.isNotEmpty && _isExpaned, // replace with isNotEmpty
  child: Padding(
    padding: EdgeInsets.only(left: level + 1 * offsetLeft),
    child: Column(
      children: widget.children,
      crossAxisAlignment: CrossAxisAlignment.start,
    ),
  ),
),

That's all 👍 👍 👍

wanted to change the textStyle of the title, like the font, the color...

Tree not look the same when app language switches to Arabic ( tree built from right), no offset from right, all the nodes in the same line vertically.