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326 lines
6.8 KiB
Markdown
326 lines
6.8 KiB
Markdown
---
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title: NodeChildren
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sidebar_position: 2
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---
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> **@types** [IPublicModelNodeChildren](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node-children.ts)<br/>
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> **@since** v1.0.0
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## 基本介绍
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节点孩子模型
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## 属性
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### owner
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返回当前 children 实例所属的节点实例
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`@type {IPublicModelNode | null}`
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### size
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children 内的节点实例数
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`@type {number}`
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### isEmptyNode
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是否为空
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`@type {boolean}`
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**@since v1.1.0**
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> v1.1.0 之前请使用 `isEmpty`
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### notEmptyNode
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是否不为空
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`@type {boolean}`
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**@since v1.1.0**
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## 方法
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### delete
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删除指定节点
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```typescript
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/**
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* 删除指定节点
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* delete the node
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* @param node
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*/
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delete(node: IPublicModelNode): boolean;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### insert
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插入一个节点
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```typescript
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/**
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* 插入一个节点
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* insert the node
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* @param node
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*/
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insert(node: IPublicModelNode): boolean;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### indexOf
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返回指定节点的下标
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```typescript
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/**
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* 返回指定节点的下标
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* get index of node in current children
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* @param node
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* @returns
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*/
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indexOf(node: IPublicModelNode): number;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### splice
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类似数组 splice 操作
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```typescript
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/**
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* 类似数组 splice 操作
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* provide the same function with {Array.prototype.splice}
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* @param start
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* @param deleteCount
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* @param node
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*/
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splice(start: number, deleteCount: number, node?: IPublicModelNode): any;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### get
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返回指定下标的节点
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```typescript
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/**
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* 返回指定下标的节点
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* get node with index
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* @param index
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* @returns
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*/
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get(index: number): IPublicModelNode | null;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### has
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是否包含指定节点
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```typescript
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/**
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* 是否包含指定节点
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* check if node exists in current children
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* @param node
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* @returns
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*/
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has(node: IPublicModelNode): boolean;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### forEach
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类似数组的 forEach
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```typescript
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/**
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* 类似数组的 forEach
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* provide the same function with {Array.prototype.forEach}
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* @param fn
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*/
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forEach(fn: (node: IPublicModelNode, index: number) => void): void;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### reverse
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类似数组的 reverse
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```typescript
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/**
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* 类似数组的 reverse
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* provide the same function with {Array.prototype.reverse}
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*/
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reverse(): IPublicModelNode[];
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### map
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类似数组的 map
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```typescript
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/**
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* 类似数组的 map
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* provide the same function with {Array.prototype.map}
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* @param fn
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*/
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map<T>(fn: (node: IPublicModelNode, index: number) => T[]): any[] | null;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### every
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类似数组的 every
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```typescript
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/**
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* 类似数组的 every
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* provide the same function with {Array.prototype.every}
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* @param fn
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*/
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every(fn: (node: IPublicModelNode, index: number) => boolean): boolean;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### some
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类似数组的 some
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```typescript
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/**
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* 类似数组的 some
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* provide the same function with {Array.prototype.some}
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* @param fn
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*/
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some(fn: (node: IPublicModelNode, index: number) => boolean): boolean;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### filter
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类似数组的 filter
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```typescript
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/**
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* 类似数组的 filter
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* provide the same function with {Array.prototype.filter}
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* @param fn
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*/
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filter(fn: (node: IPublicModelNode, index: number) => boolean): any;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### find
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类似数组的 find
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```typescript
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/**
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* 类似数组的 find
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* provide the same function with {Array.prototype.find}
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* @param fn
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*/
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find(fn: (node: IPublicModelNode, index: number) => boolean): IPublicModelNode | null;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### reduce
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类似数组的 reduce
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```typescript
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/**
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* 类似数组的 reduce
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* provide the same function with {Array.prototype.reduce}
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* @param fn
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*/
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reduce(fn: (acc: any, cur: IPublicModelNode) => any, initialValue: any): void;
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```
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相关类型：[IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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### importSchema
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导入 schema
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```typescript
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/**
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* 导入 schema
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* import schema
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* @param data
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*/
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importSchema(data?: IPublicTypeNodeData | IPublicTypeNodeData[]): void;
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```
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相关类型：[IPublicTypeNodeData](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/type/node-data.ts)
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### exportSchema
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导出 schema
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```typescript
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/**
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* 导出 schema
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* export schema
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* @param stage
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*/
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exportSchema(stage: IPublicEnumTransformStage): IPublicTypeNodeSchema;
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```
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相关类型：
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- [IPublicEnumTransformStage](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/enum/transform-stage.ts)
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- [IPublicTypeNodeSchema](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/type/node-schema.ts)
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### mergeChildren
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执行新增、删除、排序等操作
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```typescript
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/**
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* 执行新增、删除、排序等操作
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* excute remove/add/sort operations
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* @param remover
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* @param adder
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* @param sorter
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*/
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mergeChildren(
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remover: (node: IPublicModelNode, idx: number) => boolean,
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adder: (children: IPublicModelNode[]) => IPublicTypeNodeData[] | null,
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sorter: (firstNode: IPublicModelNode, secondNode: IPublicModelNode) => number
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): any;
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```
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相关类型：
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- [IPublicModelNode](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/model/node.ts)
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- [IPublicTypeNodeData](https://github.com/alibaba/lowcode-engine/blob/main/packages/types/src/shell/type/node-data.ts)
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