/// <summary>
/// Initializes a new instance of the <see cref="DateTimeList"/> class.
/// </summary>
public DateTimeList()
{
this.DefaultStyleKey = typeof(DateTimeList);
this.componentType = DateTimeComponentType.Day;
this.currentListUtcValue = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
this.IsExpanded = false;
}
private int GetLogicalIndexFromComponentValueWithoutStepApplied(DateTimeComponentType type)
{
var calendar = this.owner.calendarValidator.Calendar;
calendar.SetDateTime(this.currentListUtcValue);
switch (type)
{
case DateTimeComponentType.Day:
return(calendar.Day - calendar.FirstDayInThisMonth + 1);
case DateTimeComponentType.Month:
return(calendar.Month - calendar.FirstMonthInThisYear + 1);
case DateTimeComponentType.Year:
return(calendar.Year - calendar.FirstYearInThisEra + 1);
case DateTimeComponentType.Hour:
return((calendar.NumberOfPeriodsInThisDay == 2 && calendar.Hour == 12) ? 0 : calendar.Hour);
case DateTimeComponentType.Minute:
return(calendar.Minute);
case DateTimeComponentType.AMPM:
// 0 if AM, 1 if PM
return(calendar.Period - 1);
default:
return(0);
}
}
private int GetStepForComponentType(DateTimeComponentType componentType)
{
switch (componentType)
{
case DateTimeComponentType.Day:
return(this.Step.Day);
case DateTimeComponentType.Month:
return(this.Step.Month);
case DateTimeComponentType.Year:
return(this.Step.Year);
case DateTimeComponentType.Hour:
return(this.Step.Hour == 0 ? 1 : this.Step.Hour);
case DateTimeComponentType.Minute:
return(this.Step.Minute == 0 ? 1 : this.Step.Minute);
case DateTimeComponentType.Second:
return(this.Step.Second == 0 ? 1 : this.Step.Second);
default:
return(1);
}
}
internal override StepBehavior GetBehaviorForComponent(DateTimeComponentType dateTimeComponentType)
{
switch (dateTimeComponentType)
{
case DateTimeComponentType.Day: return(this.DayStepBehavior);
case DateTimeComponentType.Month: return(this.MonthStepBehavior);
case DateTimeComponentType.Year: return(this.YearStepBehavior);
default: return(StepBehavior.Multiples);
}
}
private int GetIndexFromCurrentValueForComponentType(DateTimeComponentType type)
{
int index = 0;
int componentValue = this.GetLogicalIndexFromComponentValueWithoutStepApplied(type);
var stepBehavior = this.owner.GetBehaviorForComponent(this.componentType);
switch (this.componentType)
{
case DateTimeComponentType.Day:
case DateTimeComponentType.Month:
case DateTimeComponentType.Year:
if (this.Step == 1)
{
return(componentValue - 1);
}
if (stepBehavior == StepBehavior.Multiples)
{
index = Math.Max((componentValue / this.Step) - 1, 0);
}
else
{
index = Math.Min(componentValue / this.Step, this.GetLogicalCount() - 1);
}
break;
case DateTimeComponentType.Hour:
index = componentValue / this.Step;
break;
case DateTimeComponentType.Minute:
index = componentValue / this.Step;
break;
case DateTimeComponentType.AMPM:
// 0 if AM, 1 if PM
return(componentValue);
}
return(index);
}
internal abstract StepBehavior GetBehaviorForComponent(DateTimeComponentType dateTimeComponentType);
internal DateTime CoerceDateTimeWithStep(int logicalIndexBasedOnBehavior, DateTimeComponentType componentType, DateTime value)
{
if (this.minCalendarWithStep.CompareDateTime(value) == 1)
{
value = this.minCalendarWithStep.GetUtcDateTime();
}
else if (this.maxCalendarWithStep.CompareDateTime(value) == -1)
{
value = this.maxCalendarWithStep.GetUtcDateTime();
}
this.Calendar.SetDateTime(value);
switch (componentType)
{
case DateTimeComponentType.Day:
logicalIndexBasedOnBehavior += this.Calendar.FirstDayInThisMonth - 1;
var day = Math.Min(this.Calendar.NumberOfDaysInThisMonth, logicalIndexBasedOnBehavior);
this.Calendar.AddDays(day - this.Calendar.Day);
return(this.Calendar.GetUtcDateTime());
case DateTimeComponentType.Month:
logicalIndexBasedOnBehavior += this.Calendar.FirstMonthInThisYear - 1;
var month = Math.Min(this.Calendar.NumberOfMonthsInThisYear, logicalIndexBasedOnBehavior);
this.Calendar.AddMonths(month - this.Calendar.Month);
if (this.Calendar.Year == this.minCalendarWithStep.Year &&
this.Calendar.Month == this.minCalendarWithStep.Month &&
this.Calendar.Day < this.minCalendarWithStep.Day)
{
this.Calendar.Day = this.minCalendarWithStep.Day;
}
if (this.Calendar.Year == this.maxCalendarWithStep.Year &&
this.Calendar.Month == this.maxCalendarWithStep.Month &&
this.Calendar.Day > this.maxCalendarWithStep.Day)
{
this.Calendar.Day = this.maxCalendarWithStep.Day;
}
return(this.Calendar.GetUtcDateTime());
case DateTimeComponentType.Year:
logicalIndexBasedOnBehavior += this.Calendar.FirstYearInThisEra - 1;
var year = logicalIndexBasedOnBehavior;
this.Calendar.AddYears(year - this.Calendar.Year);
if ((this.Calendar.Year == this.minCalendarWithStep.Year) &&
((this.Calendar.Month < this.minCalendarWithStep.Month) ||
(this.Calendar.Month == this.minCalendarWithStep.Month &&
this.Calendar.Day < this.minCalendarWithStep.Day)))
{
return(this.minCalendarWithStep.GetUtcDateTime());
}
if ((this.Calendar.Year == this.maxCalendarWithStep.Year) &&
((this.Calendar.Month > this.maxCalendarWithStep.Month) ||
(this.Calendar.Month == this.maxCalendarWithStep.Month &&
this.Calendar.Day > this.maxCalendarWithStep.Day)))
{
return(this.maxCalendarWithStep.GetUtcDateTime());
}
return(this.Calendar.GetUtcDateTime());
case DateTimeComponentType.Hour:
int calendarHour = this.Calendar.ZeroBasedHour();
int hour = logicalIndexBasedOnBehavior;
this.Calendar.AddHours(hour - calendarHour);
var date = this.Calendar.GetUtcDateTime().Date;
var isMinDate = date == this.minCalendarWithStep.GetUtcDateTime().Date;
var isMaxDate = date == this.maxCalendarWithStep.GetUtcDateTime().Date;
if (isMinDate && this.Calendar.Hour == this.minCalendarWithStep.Hour && this.Calendar.Minute < this.minCalendarWithStep.Minute)
{
return(this.minCalendarWithStep.GetUtcDateTime());
}
if (isMaxDate && this.Calendar.Hour == this.maxCalendarWithStep.Hour && this.Calendar.Minute > this.maxCalendarWithStep.Minute)
{
return(this.maxCalendarWithStep.GetUtcDateTime());
}
return(this.Calendar.GetUtcDateTime());
case DateTimeComponentType.Minute:
int minute = logicalIndexBasedOnBehavior;
this.Calendar.AddMinutes(minute - this.Calendar.Minute);
return(this.Calendar.GetUtcDateTime());
case DateTimeComponentType.AMPM:
int period = logicalIndexBasedOnBehavior + this.Calendar.FirstPeriodInThisDay;
this.Calendar.AddPeriods(period - this.Calendar.Period);
return(this.Calendar.GetUtcDateTime());
}
return(value);
}
internal override StepBehavior GetBehaviorForComponent(DateTimeComponentType dateTimeComponentType)
{
return(StepBehavior.Multiples);
}
