static object coerceDisplayDateStart(DependencyObject d, object o)
{
PersianCalendar pc = d as PersianCalendar;
Mohsen.PersianDate value = (Mohsen.PersianDate)o;
return(o);
}
private void setMonthMode()
{
this.decadeUniformGrid.Visibility = this.yearUniformGrid.Visibility = Visibility.Collapsed;
this.monthUniformGrid.Visibility = Visibility.Visible;
int year = DisplayDate.Year;
int month = DisplayDate.Month;
Mohsen.PersianDate firstDayInMonth = new Mohsen.PersianDate(year, month, 1);
for (int i = 1; i <= 6; i++)
{
for (int j = 1; j <= 7; j++)
{
var button = monthModeButtons[i - 1, j - 1];
Mohsen.PersianDate date = new Mohsen.PersianDate();
bool dateInRange;
try
{
//might throw OverflowException, which means that the date cannot be stored in PersianDate
date = monthModeRowColumnToDate(i - 1, j - 1, firstDayInMonth);
dateInRange = date >= DisplayDateStart && date <= DisplayDateEnd;
}
catch (OverflowException)
{
dateInRange = false;
}
if (dateInRange && date.Month == firstDayInMonth.Month)
{//we're good!
button.Foreground = Brushes.Black;
button.Content = date.Day.ToString();
button.IsEnabled = true;
button.Tag = date;
}
else if (dateInRange)
{//belongs to the next, or the previous month
button.Content = date.Day.ToString();
button.IsEnabled = true;
button.Tag = date;
button.Foreground = Brushes.LightGray;
}
else
{//not in [DiplayDateStart, DiplayDateEnd] range
button.Tag = null;
button.Content = "";
button.IsEnabled = false;
button.Background = Brushes.Transparent;
}
}
}
this.titleButton.Content = ((PersianMonth)month).ToString() + " " + year.ToString();
this.todayCheck();
this.selectedDateCheck(null);
}
static object coerceDisplayDateEnd(DependencyObject d, object o)
{
PersianCalendar pc = d as PersianCalendar;
Mohsen.PersianDate value = (Mohsen.PersianDate)o;
if (value < pc.DisplayDateStart)
{
return(pc.DisplayDateStart);
}
return(o);
}
/// <param name="row">zero-based row number</param>
/// <param name="column">zero-based column number</param>
private static Mohsen.PersianDate monthModeRowColumnToDate(int row, int column, Mohsen.PersianDate displayDate)
{
int year = displayDate.Year;
int month = displayDate.Month;
Mohsen.PersianDate firstDay = new Mohsen.PersianDate(year, month, 1);
int fstCol = 2 + (int)firstDay.PersianDayOfWeek;
int fstRow = fstCol == 1 ? 2 : 1;
int dayDifference = (row) * 7 + column + 1 - ((fstRow - 1) * 7 + fstCol);
return(firstDay.AddDays(dayDifference));
}
// Overrides the ConvertFrom method of TypeConverter.
public override object ConvertFrom(ITypeDescriptorContext context,
CultureInfo culture, object value)
{
if (value is string)
{
return(PersianDate.Parse(value as string));
}
if (value is DateTime)
{
return(new PersianDate((DateTime)value));
}
return(base.ConvertFrom(context, culture, value));
}
/// <param name="row">zero-based row number</param>
/// <param name="column">zero-based column number</param>
private static void monthModeDateToRowColumn(Mohsen.PersianDate date, out int row, out int column)
{
int year = date.Year;
int month = date.Month;
Mohsen.PersianDate firstDay = new Mohsen.PersianDate(year, month, 1);
int fstCol = 2 + (int)firstDay.PersianDayOfWeek;
int fstRow = fstCol == 1 ? 2 : 1;
row = (date.Day + fstCol - 2) / 7 + fstRow;
column = (date.Day + fstCol - 1) % 7;
column = column == 0 ? 7 : column;
column--; row--;
}
// Overrides the ConvertTo method of TypeConverter.
public override object ConvertTo(ITypeDescriptorContext context,
CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
PersianDate pd = (PersianDate)value;
return(value.ToString());
}
if (destinationType == typeof(DateTime))
{
PersianDate pd = (PersianDate)value;
return(pd.ToDateTime());
}
return(base.ConvertTo(context, culture, value, destinationType));
}
private void previousButton_Click(object sender, RoutedEventArgs e)
{
int m = this.DisplayDate.Month;
int y = this.DisplayDate.Year;
try
{
Mohsen.PersianDate newDisplayDate = DisplayDate;
if (this.DisplayMode == CalendarMode.Month)
{
if (m == 1)
{
newDisplayDate = new Mohsen.PersianDate(y - 1, 12, Mohsen.PersianDate.DaysInMonth(y - 1, 12));
}
else
{
newDisplayDate = new Mohsen.PersianDate(y, m - 1, Mohsen.PersianDate.DaysInMonth(y, m - 1));
}
}
else if (this.DisplayMode == CalendarMode.Year)
{
newDisplayDate = new Mohsen.PersianDate(y - 1, 12, Mohsen.PersianDate.DaysInMonth(y - 1, 12));
}
else if (this.DisplayMode == CalendarMode.Decade)
{
newDisplayDate = new Mohsen.PersianDate(y - y % 10 - 1, 12, Mohsen.PersianDate.DaysInMonth(y - y % 10 - 1, 12));
}
if (newDisplayDate >= DisplayDateStart && newDisplayDate <= DisplayDateEnd)
{
this.SetCurrentValue(DisplayDateProperty, newDisplayDate);
}
}
catch (ArgumentOutOfRangeException)
{
}
}