/// <summary>
/// Check whether dates have the same value of both year and month
/// </summary>
private void PerformIdentityChecks()
{
int year = ListOfSetOfDates.First().DateComponents.Year;
int month = ListOfSetOfDates.First().DateComponents.Month;
IsYearTheSame = ListOfSetOfDates.All(date => date.DateComponents.Year == year);
IsMonthTheSame = ListOfSetOfDates.All(date => date.DateComponents.Month == month);
}
/// <summary>
/// Return string containing a hyphen and a second date. There is only
/// one possibility of displaying this date. "BC" is added when the latter date is in previous era
/// </summary>
/// <returns>String containing a hyphen and a second date also "BC" is added when needed</returns>
private string DisplaySecondPart()
{
if (ListOfSetOfDates.Last().DateComponents.Year < 0)
{
return(" - " + ListOfSetOfDates.Last().DateComponentsAsStrings.Day + "."
+ ListOfSetOfDates.Last().DateComponentsAsStrings.Month + "."
+ ListOfSetOfDates.Last().DateComponentsAsStrings.Year + " BC");
}
else
{
return(" - " + ListOfSetOfDates.Last().DateComponentsAsStrings.Day + "."
+ ListOfSetOfDates.Last().DateComponentsAsStrings.Month + "."
+ ListOfSetOfDates.Last().DateComponentsAsStrings.Year);
}
}
/// <summary>
/// Change order of the dates in the list when needed. Ordering will be
/// performed by only one component of the date
/// </summary>
public void OrderDates()
{
PerformIdentityChecks();
// Order by year when year is not the same in both of the dates
if (!IsYearTheSame)
{
ListOfSetOfDates = ListOfSetOfDates.OrderBy(date => date.DateComponents.Year).ToList();
return;
}
// Order by month when month is not the same in both of the dates
if (!IsMonthTheSame)
{
ListOfSetOfDates = ListOfSetOfDates.OrderBy(date => date.DateComponents.Month).ToList();
return;
}
// Order by day when day is not the same in both of the dates
ListOfSetOfDates = ListOfSetOfDates.OrderBy(date => date.DateComponents.Day).ToList();
}
/// <summary>
/// Displaying first date is the tricky part. There are three possibilties
/// of displaying this date depending on the range between two dates
/// </summary>
/// <param name="displayPermissions">DisplayPermissions object holds
/// all the necessary data to return proper string</param>
/// <returns>Properly formatted string when DisplayPermissions object cointains
/// correct data, empty otherwise</returns>
private string ReturnFirstDate(DisplayPermissions displayPermissions)
{
if (displayPermissions == DisplayPermissions.Day)
{
return(ListOfSetOfDates.First().DateComponentsAsStrings.Day);
}
if (displayPermissions == (DisplayPermissions.Day | DisplayPermissions.Month))
{
return(ListOfSetOfDates.First().DateComponentsAsStrings.Day + "."
+ ListOfSetOfDates.First().DateComponentsAsStrings.Month);
}
if (displayPermissions == (DisplayPermissions.Day
| DisplayPermissions.Month | DisplayPermissions.Year))
{
return(ListOfSetOfDates.First().DateComponentsAsStrings.Day + "."
+ ListOfSetOfDates.First().DateComponentsAsStrings.Month + "."
+ ListOfSetOfDates.First().DateComponentsAsStrings.Year);
}
return(String.Empty);
}
/// <summary>
/// Add a single Date object to the list
/// </summary>
/// <param name="date">Date object which was previously validated</param>
public void Add(Date date)
{
ListOfSetOfDates.Add(date);
}
