yunzai-micro-plugin/src/utils/pager.ts

Yunzai开发管理面板

/** 分页器 */
export default class Pager {
    $list:any[]
    $pageNum:number
    $pageSize:number
    constructor(list:any[], pageNum:number, pageSize:number) {
      this.$list = list
      this.$pageNum = pageNum
      this.$pageSize = pageSize
    }
  
    get pageNum() {
      return this.$pageNum
    }
  
    set pageNum(pageNum) {
      this.$pageNum = pageNum
    }
  
    get pageSize() {
      return this.$pageSize
    }
  
    set pageSize(pageSize) {
      this.$pageSize = pageSize
    }
  
    /** 根据当前分页条件，计算出的数据 */
    get records() {
      return [...this.$list].splice(this.offset, this.$pageSize)
    }
  
    /** 计算当前分页偏移量 */
    get offset() {
      let current = this.$pageNum
      if (current <= 1) {
        return 0
      }
      return Math.max((current - 1) * this.$pageSize, 0)
    }
  
    /** 最大页码 */
    get maxNum() {
      return Math.ceil(this.total / this.$pageSize)
    }
  
    /** 总行数 */
    get total() {
      return this.$list.length
    }
  
    toJSON() {
      return {
        pageNum: this.$pageNum,
        pageSize: this.$pageSize,
        total: this.total,
        maxNum: this.maxNum,
        records: this.records,
      }
    }
}