typescript 材料的自定义日期适配器

Posted 2021-05-20

import { NativeDateAdapter } from '@angular/material/core';


export const TS_DATE_FORMATS = {
  parse: {
    dateInput: {month: 'short', year: 'numeric', day: 'numeric'},
  },
  display: {
    dateInput: 'input',
    monthYearLabel: 'inputMonth',
    dateA11yLabel: {year: 'numeric', month: 'long', day: 'numeric'},
    monthYearA11yLabel: {year: 'numeric', month: 'long'},
  },
};


export class TsDateAdapter extends NativeDateAdapter {

  parse(value: any): Date | null {
    if ((typeof value === 'string') && (value.indexOf('/') > -1)) {
      const str = value.split('/');
      const year = Number(str[2]);
      const month = Number(str[1]) - 1;
      const date = Number(str[0]);

      return new Date(year, month, date);
    }

    const timestamp = typeof value === 'number' ? value : Date.parse(value);
    return isNaN(timestamp) ? null : new Date(timestamp);
  }


  format(date: Date, displayFormat: any): string {
    if (displayFormat === 'input') {
      const day = date.getDate();
      const month = date.getMonth() + 1;
      const year = date.getFullYear();

      return this._to2digit(month) + '-' + this._to2digit(day) + '-' + year;
    } else {
      return date.toDateString();
    }
  }


  private _to2digit(n: number) {
    return ('00' + n).slice(-2);
  }

}