wxhuanart/miniprogram/components/dropmenu/dropmenu.ts

// components/dropmenu/dropmenu.ts
Component<
  {
    // heightStyle: string
  },
  {
    // scrollMaxHeight: ComponentPropertyNumberType
  },
  {
    updateChildren(activeIdx: number): void
  },
  {
    children: CustomComponent[]
    currentActive: number
  }
>({
  relations: {
    './dropmenu-item': {
      type: 'child',
      linked(child: CustomComponent) {
        this.children.push(child)
      },
      unlinked(child: CustomComponent) {
        this.children = this.children.filter((item) => item !== child)
      },
    },
    './dropmenu-btn': {
      type: 'child',
    },
  },
  options: {
    addGlobalClass: true,
    multipleSlots: true,
  },
  externalClasses: ['n-class'],
  /**
   * 组件的属性列表
   */
  properties: {},

  /**
   * 组件的初始数据
   */
  data: {},

  /**
   * 组件的方法列表
   */
  methods: {
    updateChildren(activeIdx: number) {
      const { children } = this
      if (children && children.length > 0) {
        children.forEach((child, idx) => {
          child.setShow(idx === activeIdx)
        })
      }
      return Promise.resolve()
    },
  },

  lifetimes: {
    created() {
      this.children = []
    },
  },
})