tolyfx/toly_ui/tolyui-anchor

flowchart TB
    subgraph Controller["TolyAnchorController"]
        ISC["ItemScrollController\n(控制滚动)"]
        IPL["ItemPositionsListener\n(监听可见项)"]
    end
    
    Controller --> Anchor
    Controller --> Scrollable
    
    subgraph Anchor["TolyAnchor"]
        NAV["导航列表"]
    end
    
    subgraph Scrollable["TolyAnchorScrollable"]
        CONTENT["内容区域"]
    end
    
    Anchor <-.->|"联动"| Scrollable

flowchart TD
    A["用户滚动内容"] --> B["ItemPositionsListener 检测可见项"]
    B --> C["更新 activeIndex\n(取第一个可见项)"]
    C --> D["TolyAnchor 收到通知"]
    D --> E["更新导航项高亮状态"]
    D --> F["滚动导航列表确保激活项可见"]
    D --> G["触发 linkBuilder 重新构建"]

classDiagram
    class TolyAnchorController {
        +int activeIndex
        +String? activeTag
        +ItemScrollController itemScrollController
        +ItemPositionsListener itemPositionsListener
        +scrollToIndex(int index)
        +jumpToIndex(int index)
        +scrollTo(String tag)
        +dispose()
    }
    
    class TolyAnchorLink {
        +String title
        +String href
        +List~TolyAnchorLink~? children
    }
    
    class TolyAnchor {
        +TolyAnchorController controller
        +List~TolyAnchorLink~ links
        +TolyAnchorLinkBuilder? linkBuilder
        +Axis scrollDirection
        +bool shrinkWrap
        +ScrollController? scrollController
    }
    
    class TolyAnchorScrollable {
        +TolyAnchorController controller
        +int itemCount
        +IndexedWidgetBuilder itemBuilder
    }
    
    TolyAnchorController --> TolyAnchor : 控制
    TolyAnchorController --> TolyAnchorScrollable : 控制
    TolyAnchor --> TolyAnchorLink : 渲染

flowchart LR
    subgraph Docs["文档阅读"]
        D1["API 文档"]
        D2["使用指南"]
        D3["帮助中心"]
    end
    
    subgraph Settings["设置面板"]
        S1["系统设置"]
        S2["用户配置"]
        S3["应用偏好"]
    end
    
    subgraph Content["内容导航"]
        C1["章节目录"]
        C2["文章大纲"]
        C3["商品分类"]
    end
    
    TolyAnchor --> Docs
    TolyAnchor --> Settings
    TolyAnchor --> Content

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