public ViewModel()
{
for (int i = 0; i < 12; i++)
{
Months.Add(new Month(i + 1, 31, this)); //this is simplified
}
SelectedMonth = Months.First();
}
private void PreviousMonthOrYearOnClick(object sender, MouseButtonEventArgs e)
{
if (CurrentState == CalendarState.Days)
{
SelectedMonth = Math.Max(Months.First().Key, SelectedMonth - 1);
}
else if (CurrentState == CalendarState.Months)
{
SelectedYear = Math.Max(MinYear, SelectedYear - 1);
}
}
public FriendlyDateRangePicker()
{
var currentDate = DateTime.Now;
Years = DateSegmentViewModel.GetYears(currentDate.Year - 3);
SelectedYear = Years.First(p => p.Value == currentDate.Year);
SelectedMonth = Months.First(p => p.Value == currentDate.Month);
SelectedDay = Days.First(p => p.Value == currentDate.Day);
MonthDuration = 1;
InitializeComponent();
}
private void CachePreviousMonths()
{
var firstMonth = Months.First();
for (int i = 1; i < CachedMonthCount; i++)
{
var monthToInsertDateTime = firstMonth.CurrentDate.AddMonths(-i);
var monthToInsert = new MonthViewModel(
monthToInsertDateTime,
SelectDayCommand,
_toDoCalendarViewModel.GetDaysWithToDoByDateAndStatus(monthToInsertDateTime, ConstantsHelper.Active),
_toDoCalendarViewModel.GetDaysWithToDoByDateAndStatus(monthToInsertDateTime, ConstantsHelper.Completed));
Months.Insert(0, monthToInsert);
Months.RemoveAt(Months.Count - 1);
}
}
protected DateTime?NextMonth(int year, int month, int day, int hour, int minute, int second)
{
switch (MonthType)
{
case CronFieldType.Any:
if (month < 12)
{
var nextMonth = month + 1;
var daysInNextMonth = DateTime.DaysInMonth(year, nextMonth);
if (day <= daysInNextMonth)
{
return(new DateTime(year, nextMonth, day, hour, minute, second));
}
return(NextMonth(year, nextMonth, day, hour, minute, second));
}
else
{
int nextYear = 0, nextMonth = 1;
switch (YearType)
{
case CronFieldType.Any:
nextYear = year + 1;
break;
case CronFieldType.Specified:
var yearValues = Years.Where(x => x > year);
if (yearValues.Any())
{
nextYear = yearValues.First();
}
break;
default: throw new NotImplementedException();
}
var daysInNextMonth = DateTime.DaysInMonth(nextYear, nextMonth);
if (day <= daysInNextMonth)
{
return(new DateTime(nextYear, nextMonth, day, hour, minute, second));
}
return(NextMonth(nextYear, nextMonth, day, hour, minute, second));
}
case CronFieldType.Specified:
var values = Months.Where(x => x > month);
if (values.Any())
{
var nextMonth = values.First();
var daysInNextMonth = DateTime.DaysInMonth(year, nextMonth);
if (day <= daysInNextMonth)
{
return(new DateTime(year, nextMonth, day, hour, minute, second));
}
return(NextMonth(year, nextMonth, day, hour, minute, second));
}
else
{
int nextYear = 0, nextMonth = Months.First();
switch (YearType)
{
case CronFieldType.Any:
nextYear = year + 1;
break;
case CronFieldType.Specified:
var yearValues = Years.Where(x => x > year);
if (yearValues.Any())
{
nextYear = yearValues.First();
}
break;
default: throw new NotImplementedException();
}
var daysInNextMonth = DateTime.DaysInMonth(nextYear, nextMonth);
if (day <= daysInNextMonth)
{
return(new DateTime(nextYear, nextMonth, day, hour, minute, second));
}
return(NextMonth(nextYear, nextMonth, day, hour, minute, second));
}
default: throw new NotImplementedException();
}
}
