public static DatesInterval ConvertBack(GroupHeaderTypes groupHeaderType)
{
var endOfToday = DateTime.MaxValue;
var today = DateTime.Today;
var endOfYesterday = today.AddMilliseconds(-1);
var yesterday = today.AddDays(-1);
var endOfThisWeek = yesterday.AddMilliseconds(-1);
var thisWeek = today.AddDays(-1 * (int)today.DayOfWeek);
var endOfThisMonth = thisWeek.AddMilliseconds(-1);
var thisMonth = new DateTime(today.Year, today.Month, 1);
var endOfLastMonth = thisMonth.AddMilliseconds(-1);
var lastMonth = thisMonth.AddMonths(-1);
var endOfThisYear = lastMonth.AddMilliseconds(-1);
var thisYear = new DateTime(today.Year, 1, 1);
var endOfLastYear = thisYear.AddMilliseconds(-1);
var lastYear = new DateTime(today.Year - 1, 1, 1);
var endOfLongAgo = lastYear.AddMilliseconds(-1);
var longAgo = DateTime.MinValue;
switch (groupHeaderType)
{
case GroupHeaderTypes.All:
{
return(new DatesInterval(DateTime.MinValue, DateTime.MaxValue));
}
case GroupHeaderTypes.Today:
{
return(new DatesInterval(today, endOfToday));
}
case GroupHeaderTypes.Yesterday:
{
return(new DatesInterval(yesterday, endOfYesterday));
}
case GroupHeaderTypes.ThisWeek:
{
return(new DatesInterval(thisWeek, endOfThisWeek));
}
case GroupHeaderTypes.ThisMonth:
{
return(new DatesInterval(thisMonth, endOfThisMonth));
}
case GroupHeaderTypes.LastMonth:
{
return(new DatesInterval(lastMonth, endOfLastMonth));
}
case GroupHeaderTypes.ThisYear:
{
return(new DatesInterval(thisYear, endOfThisYear));
}
case GroupHeaderTypes.LastYear:
{
return(new DatesInterval(lastYear, endOfLastYear));
}
case GroupHeaderTypes.LongAgo:
{
return(new DatesInterval(longAgo, endOfLongAgo));
}
default:
{
throw new NotSupportedException("Not supported group header.");
}
}
}
public ElementWithGroupHeader(GroupHeaderTypes groupHeaderType, IElementWithDate element)
{
this.GroupHeaderType = groupHeaderType;
this.Element = element;
}
