Function getNextAvailableDay

src/index.ts:781–821

(current: DayElement, delta: number)

  }

  function getNextAvailableDay(current: DayElement, delta: number) {
    const givenMonth =
      current.className.indexOf("Month") === -1
        ? current.dateObj.getMonth()
        : self.currentMonth;
    const endMonth = delta > 0 ? self.config.showMonths : -1;
    const loopDelta = delta > 0 ? 1 : -1;

    for (
      let m = givenMonth - self.currentMonth;
      m != endMonth;
      m += loopDelta
    ) {
      const month = (self.daysContainer as HTMLDivElement).children[m];
      const startIndex =
        givenMonth - self.currentMonth === m
          ? current.$i + delta
          : delta < 0
          ? month.children.length - 1
          : 0;
      const numMonthDays = month.children.length;

      for (
        let i = startIndex;
        i >= 0 && i < numMonthDays && i != (delta > 0 ? numMonthDays : -1);
        i += loopDelta
      ) {
        const c = month.children[i] as DayElement;
        if (
          c.className.indexOf("hidden") === -1 &&
          isEnabled(c.dateObj) &&
          Math.abs(current.$i - i) >= Math.abs(delta)
        )
          return focusOnDayElem(c);
      }
    }

    self.changeMonth(loopDelta);
    focusOnDay(getFirstAvailableDay(loopDelta), 0);
    return undefined;
  }

  function focusOnDay(current: DayElement | undefined, offset: number) {
    const activeElement = getClosestActiveElement();