Method _shouldEnableMonth

src/material/datepicker/year-view.ts:367–397

Whether the given month is enabled.

(month: number)

  /** Whether the given month is enabled. */
  private _shouldEnableMonth(month: number) {
    const activeYear = this._dateAdapter.getYear(this.activeDate);

    if (
      month === undefined ||
      month === null ||
      this._isYearAndMonthAfterMaxDate(activeYear, month) ||
      this._isYearAndMonthBeforeMinDate(activeYear, month)
    ) {
      return false;
    }

    if (!this.dateFilter) {
      return true;
    }

    const firstOfMonth = this._dateAdapter.createDate(activeYear, month, 1);

    // If any date in the month is enabled count the month as enabled.
    for (
      let date = firstOfMonth;
      this._dateAdapter.getMonth(date) == month;
      date = this._dateAdapter.addCalendarDays(date, 1)
    ) {
      if (this.dateFilter(date)) {
        return true;
      }
    }

    return false;
  }

  /**
   * Tests whether the combination month/year is after this.maxDate, considering