internal static DateTime IncrementByView(DateTime date, int increment, CalendarDisplayMode displayMode, bool weekendsVisible = true)
{
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(CouldAddYearsToDate(date.Year + increment) ? date.AddYears(increment) : date);
case CalendarDisplayMode.DecadeView:
return(CouldAddYearsToDate(date.Year + (increment * 10)) ? date.AddYears(increment * 10) : date);
case CalendarDisplayMode.CenturyView:
return(CouldAddYearsToDate(date.Year + (increment * 100)) ? date.AddYears(increment * 100) : date);
case CalendarDisplayMode.MultiDayView:
if (!weekendsVisible)
{
date = AddBusinessDays(date, increment);
}
else
{
date = date.Year == DateTime.MinValue.Year && date.Month == DateTime.MinValue.Month && date.Day - increment < 0 ||
date.Year == DateTime.MaxValue.Year && date.Month == DateTime.MaxValue.Month && date.Day + increment > 31
? date : date.AddDays(increment);
}
return(date);
default:
return(date.Year == DateTime.MinValue.Year && date.Month == DateTime.MinValue.Month && increment < 0 ||
date.Year == DateTime.MaxValue.Year && date.Month == DateTime.MaxValue.Month && increment > 0
? date : date.AddMonths(increment));
}
}
public override void OnPrepareOptionsMenu(IMenu menu)
{
CalendarDisplayMode currentDisplayMode = calendarView.DisplayMode;
if (currentDisplayMode == CalendarDisplayMode.Month)
{
menu.FindItem(Resource.Id.itemMonth).SetEnabled(false);
menu.FindItem(Resource.Id.itemWeek).SetEnabled(true);
menu.FindItem(Resource.Id.itemDay).SetEnabled(true);
menu.FindItem(Resource.Id.itemYear).SetEnabled(true);
}
else if (currentDisplayMode == CalendarDisplayMode.Week)
{
menu.FindItem(Resource.Id.itemMonth).SetEnabled(true);
menu.FindItem(Resource.Id.itemWeek).SetEnabled(false);
menu.FindItem(Resource.Id.itemDay).SetEnabled(true);
menu.FindItem(Resource.Id.itemYear).SetEnabled(true);
}
else if (currentDisplayMode == CalendarDisplayMode.Year)
{
menu.FindItem(Resource.Id.itemMonth).SetEnabled(true);
menu.FindItem(Resource.Id.itemWeek).SetEnabled(true);
menu.FindItem(Resource.Id.itemDay).SetEnabled(true);
menu.FindItem(Resource.Id.itemYear).SetEnabled(false);
}
else if (currentDisplayMode == CalendarDisplayMode.Day)
{
menu.FindItem(Resource.Id.itemMonth).SetEnabled(true);
menu.FindItem(Resource.Id.itemWeek).SetEnabled(true);
menu.FindItem(Resource.Id.itemDay).SetEnabled(false);
menu.FindItem(Resource.Id.itemYear).SetEnabled(true);
}
}
public void OnDisplayModeChanged(CalendarDisplayMode oldValue, CalendarDisplayMode newValue)
{
string msg = "";
if (newValue == CalendarDisplayMode.Year) {
msg = "Year mode";
} else if (newValue == CalendarDisplayMode.Month) {
msg = "Month mode";
}
Toast.MakeText (this.context, msg, ToastLength.Long).Show ();
}
internal DateTime GetFirstDateToRenderForDisplayMode(DateTime date, CalendarDisplayMode displayMode)
{
date = date.Date;
DateTime firstDateToRender = date;
if (displayMode == CalendarDisplayMode.MultiDayView)
{
DayOfWeek firstDayOfWeek = this.GetFirstDayOfWeek();
DateTime firstDateOfCurrentWeek = CalendarMathHelper.GetFirstDayOfCurrentWeek(date, firstDayOfWeek);
if (!(firstDateOfCurrentWeek.Date <= date.Date && firstDateOfCurrentWeek.AddDays(7).Date >= date.Date))
{
firstDateToRender = firstDateOfCurrentWeek;
}
if (!this.multiDayViewSettings.WeekendsVisible)
{
firstDateToRender = CalendarMathHelper.AddBusinessDays(date, -this.multiDayViewSettings.VisibleDays);
}
else
{
firstDateToRender = date.AddDays(-this.multiDayViewSettings.VisibleDays);
}
}
else if (displayMode == CalendarDisplayMode.MonthView)
{
DayOfWeek firstDayOfWeekToUse = this.GetFirstDayOfWeek();
DateTime monthStartDate = CalendarMathHelper.GetFirstDateOfMonth(date);
int daysToSubtract = (int)monthStartDate.DayOfWeek - (int)firstDayOfWeekToUse;
if (daysToSubtract <= 0)
{
daysToSubtract += 7;
}
firstDateToRender = monthStartDate.Date == DateTime.MinValue.Date ? monthStartDate : monthStartDate.AddDays(-daysToSubtract);
}
else if (displayMode == CalendarDisplayMode.YearView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfYear(date);
}
else if (displayMode == CalendarDisplayMode.DecadeView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfDecade(date);
}
else if (displayMode == CalendarDisplayMode.CenturyView)
{
firstDateToRender = CalendarMathHelper.GetFirstDateOfCentury(date);
}
return(firstDateToRender);
}
public void OnDisplayModeChanged(CalendarDisplayMode oldValue, CalendarDisplayMode newValue)
{
string msg = "";
if (newValue == CalendarDisplayMode.Year)
{
msg = "Year mode";
}
else if (newValue == CalendarDisplayMode.Month)
{
msg = "Month mode";
}
Toast.MakeText(this.context, msg, ToastLength.Long).Show();
}
internal static DateTime IncrementByCell(DateTime date, int increment, CalendarDisplayMode displayMode)
{
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(date.AddMonths(increment));
case CalendarDisplayMode.DecadeView:
return(date.AddYears(increment));
case CalendarDisplayMode.CenturyView:
return(date.AddYears(increment * 10));
default:
return(date.AddDays(increment));
}
}
internal static DateTime GetCellDateForViewLevel(DateTime date, CalendarDisplayMode displayMode)
{
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(CalendarMathHelper.GetFirstDateOfMonth(date));
case CalendarDisplayMode.DecadeView:
return(CalendarMathHelper.GetFirstDateOfYear(date));
case CalendarDisplayMode.CenturyView:
return(CalendarMathHelper.GetFirstDateOfDecade(date));
default:
return(date);
}
}
internal static DateTime IncrementByView(DateTime date, int increment, CalendarDisplayMode displayMode)
{
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(CouldAddYearsToDate(date.Year + increment) ? date.AddYears(increment) : date);
case CalendarDisplayMode.DecadeView:
return(CouldAddYearsToDate(date.Year + (increment * 10)) ? date.AddYears(increment * 10) : date);
case CalendarDisplayMode.CenturyView:
return(CouldAddYearsToDate(date.Year + (increment * 100)) ? date.AddYears(increment * 100) : date);
default:
return(date.Year == DateTime.MinValue.Year && date.Month == DateTime.MinValue.Month && increment < 0 ||
date.Year == DateTime.MaxValue.Year && date.Month == DateTime.MaxValue.Month && increment > 0
? date : date.AddMonths(increment));
}
}
internal static DateTime GetLastDateForCurrentDisplayUnit(DateTime date, CalendarDisplayMode displayMode)
{
// NOTE: Ignore time part for calendar calculations.
date = date.Date;
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(CalendarMathHelper.GetLastDateOfYearView(date));
case CalendarDisplayMode.DecadeView:
return(CalendarMathHelper.GetLastDateOfDecadeView(date));
case CalendarDisplayMode.CenturyView:
return(CalendarMathHelper.GetLastDateOfCenturyView(date));
default:
return(CalendarMathHelper.GetLastDateOfMonthView(date));
}
}
internal static bool IsCalendarViewChanged(DateTime displayDate, DateTime newDisplayDate, CalendarDisplayMode displayMode)
{
// NOTE: Ignore time part for calendar calculations.
displayDate = displayDate.Date;
newDisplayDate = newDisplayDate.Date;
switch (displayMode)
{
case CalendarDisplayMode.YearView:
return(displayDate.Year != newDisplayDate.Year);
case CalendarDisplayMode.DecadeView:
return(CalendarMathHelper.GetFirstDateOfDecade(displayDate) != CalendarMathHelper.GetFirstDateOfDecade(newDisplayDate));
case CalendarDisplayMode.CenturyView:
return(CalendarMathHelper.GetFirstDateOfCentury(displayDate) != CalendarMathHelper.GetFirstDateOfCentury(newDisplayDate));
default:
return(CalendarMathHelper.GetFirstDateOfMonth(displayDate) != CalendarMathHelper.GetFirstDateOfMonth(newDisplayDate));
}
}
public void OnDisplayModeChanged(CalendarDisplayMode oldValue, CalendarDisplayMode newValue)
{
string msg = newValue.Name();
Toast.MakeText(this.context, msg, ToastLength.Long).Show();
}
public void OnDisplayModeChanged (CalendarDisplayMode oldValue, CalendarDisplayMode newValue)
{
string msg = newValue.Name ();
Toast.MakeText (this.context, msg, ToastLength.Long).Show ();
}
