| public AddDays ( DateTime time, int days ) : DateTime | ||
| time | DateTime | |
| days | int | |
| return | DateTime | |
/// <summary>
/// Determines if the specified <paramref name="year"/> is a valid year value.
/// </summary>
/// <param name="year">The year value.</param>
/// <param name="cal">The calendar to use.</param>
/// <param name="era">The era the year belongs to.</param>
/// <returns>true if it's a valid year value; false otherwise.</returns>
private static bool IsValidYear(int year, Calendar cal, int era)
{
int minYear = cal.GetYear(cal.MinSupportedDateTime.Date);
int maxYear = cal.GetYear(cal.MaxSupportedDateTime.Date);
if (cal.Eras.Length > 1)
{
DateTime? minDate = null, maxDate = null;
DateTime date = cal.MinSupportedDateTime;
while (date < cal.MaxSupportedDateTime.Date)
{
int e = cal.GetEra(date);
if (e == era)
{
if (minDate == null)
{
minDate = date;
}
maxDate = date;
}
date = cal.AddDays(date, 1);
}
minYear = cal.GetYear(minDate.GetValueOrDefault(cal.MinSupportedDateTime.Date));
maxYear = cal.GetYear(maxDate.GetValueOrDefault(cal.MaxSupportedDateTime.Date));
}
year = cal.ToFourDigitYear(year);
return year >= minYear && year <= maxYear;
}
private void DayListEventHandler(Object source, ListCommandEventArgs e)
{
_threadCalendar = DateTimeFormatInfo.CurrentInfo.Calendar;
// VisibleDate should have been set with the first day of the week
// so the selected index can be used to adjust to the selected day.
Control.VisibleDate = _threadCalendar.AddDays(Control.VisibleDate, e.ListItem.Index);
SelectRange(Control.VisibleDate, Control.VisibleDate);
HandlePostBackEvent(Done.ToString(CultureInfo.InvariantCulture));
}
/// <summary>
/// Builds an array of <see cref="MonthCalendarEraRange"/> to store the min and max date of the eras of the specified
/// <see cref="System.Globalization.Calendar"/>.
/// </summary>
/// <param name="cal">
/// The <see cref="System.Globalization.Calendar"/> to retrieve the era ranges for.
/// </param>
/// <returns>
/// An array of type <see cref="MonthCalendarEraRange"/>.
/// </returns>
private static MonthCalendarEraRange[] GetEraRanges(Calendar cal)
{
if (cal.Eras.Length == 1)
{
return new[] { new MonthCalendarEraRange(cal.Eras[0], cal.MinSupportedDateTime.Date, cal.MaxSupportedDateTime.Date) };
}
List<MonthCalendarEraRange> ranges = new List<MonthCalendarEraRange>();
DateTime date = cal.MinSupportedDateTime.Date;
int currentEra = -1;
while (date < cal.MaxSupportedDateTime.Date)
{
int era = cal.GetEra(date);
if (era != currentEra)
{
ranges.Add(new MonthCalendarEraRange(era, date));
if (currentEra != -1)
{
ranges[ranges.Count - 2].MaxDate = cal.AddDays(date, -1);
}
currentEra = era;
}
date = cal.AddDays(date, 1);
}
ranges[ranges.Count - 1].MaxDate = date;
return ranges.ToArray();
}
private void MonthListEventHandler(Object source, ListCommandEventArgs e)
{
_threadCalendar = DateTimeFormatInfo.CurrentInfo.Calendar;
if (e.ListItem.Index == _monthsToDisplay)
{
// Next was selected
Control.VisibleDate = _threadCalendar.AddMonths(
Control.VisibleDate, _monthsToDisplay);
SecondaryUIMode = ChooseMonth;
}
else if (e.ListItem.Index == _monthsToDisplay + 1)
{
// Prev was selected
Control.VisibleDate = _threadCalendar.AddMonths(
Control.VisibleDate, -_monthsToDisplay);
SecondaryUIMode = ChooseMonth;
}
else
{
// A month was selected
Control.VisibleDate = _threadCalendar.AddMonths(
Control.VisibleDate,
e.ListItem.Index);
if (_chooseOption == MonthOption)
{
// Add the whole month to the date list
DateTime beginDate = EffectiveVisibleDate(Control.VisibleDate);
Control.VisibleDate = beginDate;
DateTime endDate = _threadCalendar.AddMonths(beginDate, 1);
endDate = _threadCalendar.AddDays(endDate, -1);
SelectRange(beginDate, endDate);
HandlePostBackEvent(Done.ToString(CultureInfo.InvariantCulture));
}
else
{
SecondaryUIMode = ChooseWeek;
}
}
}
private void WeekListEventHandler(Object source, ListCommandEventArgs e)
{
// Get the first calendar day and adjust it to the week the user
// selected (to be consistent with the index setting in Render())
_threadCalendar = DateTimeFormatInfo.CurrentInfo.Calendar;
DateTime tempDate = FirstCalendarDay(Control.VisibleDate);
Control.VisibleDate = _threadCalendar.AddDays(tempDate, e.ListItem.Index * 7);
if (_chooseOption == WeekOption)
{
// Add the whole week to the date list
DateTime endDate = _threadCalendar.AddDays(Control.VisibleDate, 6);
SelectRange(Control.VisibleDate, endDate);
HandlePostBackEvent(Done.ToString(CultureInfo.InvariantCulture));
}
else
{
SecondaryUIMode = ChooseDay;
}
}
private void SetCalendarDayButtons(DateTime firstDayOfMonth)
{
int lastMonthToDisplay = PreviousMonthDays(firstDayOfMonth);
DateTime dateToAdd;
if (DateTimeHelper.CompareYearMonth(firstDayOfMonth, DateTime.MinValue) > 0)
{
// DisplayDate is not equal to DateTime.MinValue we can subtract
// days from the DisplayDate
dateToAdd = _calendar.AddDays(firstDayOfMonth, -lastMonthToDisplay);
}
else
{
dateToAdd = firstDayOfMonth;
}
if (Owner != null && Owner.HoverEnd != null && Owner.HoverStart != null)
{
Owner.HoverEndIndex = null;
Owner.HoverStartIndex = null;
}
int count = Calendar.RowsPerMonth * Calendar.ColumnsPerMonth;
for (int childIndex = Calendar.ColumnsPerMonth; childIndex < count; childIndex++)
{
CalendarDayButton childButton = (CalendarDayButton)MonthView !.Children[childIndex];
childButton.Index = childIndex;
SetButtonState(childButton, dateToAdd);
// Update the indexes of hoverStart and hoverEnd
if (Owner != null && Owner.HoverEnd != null && Owner.HoverStart != null)
{
if (DateTimeHelper.CompareDays(dateToAdd, Owner.HoverEnd.Value) == 0)
{
Owner.HoverEndIndex = childIndex;
}
if (DateTimeHelper.CompareDays(dateToAdd, Owner.HoverStart.Value) == 0)
{
Owner.HoverStartIndex = childIndex;
}
}
//childButton.Focusable = false;
childButton.Content = dateToAdd.Day.ToString(DateTimeHelper.GetCurrentDateFormat());
childButton.DataContext = dateToAdd;
if (DateTime.Compare((DateTime)DateTimeHelper.DiscardTime(DateTime.MaxValue), dateToAdd) > 0)
{
// Since we are sure DisplayDate is not equal to
// DateTime.MaxValue, it is safe to use AddDays
dateToAdd = _calendar.AddDays(dateToAdd, 1);
}
else
{
// DisplayDate is equal to the DateTime.MaxValue, so there
// are no trailing days
childIndex++;
for (int i = childIndex; i < count; i++)
{
childButton = (CalendarDayButton)MonthView.Children[i];
// button needs a content to occupy the necessary space
// for the content presenter
childButton.Content = i.ToString(DateTimeHelper.GetCurrentDateFormat());
childButton.IsEnabled = false;
childButton.Opacity = 0;
}
return;
}
}
// If the HoverStart or HoverEndInternal could not be found on the
// DisplayMonth set the values of the HoverStartIndex or
// HoverEndIndex to be the first or last day indexes on the current
// month
if (Owner != null && Owner.HoverStart.HasValue && Owner.HoverEndInternal.HasValue)
{
if (!Owner.HoverEndIndex.HasValue)
{
if (DateTimeHelper.CompareDays(Owner.HoverEndInternal.Value, Owner.HoverStart.Value) > 0)
{
Owner.HoverEndIndex = Calendar.ColumnsPerMonth * Calendar.RowsPerMonth - 1;
}
else
{
Owner.HoverEndIndex = Calendar.ColumnsPerMonth;
}
}
if (!Owner.HoverStartIndex.HasValue)
{
if (DateTimeHelper.CompareDays(Owner.HoverEndInternal.Value, Owner.HoverStart.Value) > 0)
{
Owner.HoverStartIndex = Calendar.ColumnsPerMonth;
}
else
{
Owner.HoverStartIndex = Calendar.ColumnsPerMonth * Calendar.RowsPerMonth - 1;
}
}
}
}
/// <include file='doc\ChtmlCalendarAdapter.uex' path='docs/doc[@for="ChtmlCalendarAdapter.Render"]/*' />
public override void Render(HtmlMobileTextWriter writer)
{
ArrayList arr;
DateTime tempDate;
DateTimeFormatInfo currentDateTimeInfo = DateTimeFormatInfo.CurrentInfo;
String abbreviatedMonthDayPattern = AbbreviateMonthPattern(currentDateTimeInfo.MonthDayPattern);
_threadCalendar = currentDateTimeInfo.Calendar;
bool breakAfter = false;
writer.EnterStyle(Style);
Debug.Assert(NotSecondaryUI == NotSecondaryUIInit);
switch (SecondaryUIMode)
{
case FirstPrompt:
String promptText = Control.CalendarEntryText;
if (String.IsNullOrEmpty(promptText))
{
promptText = SR.GetString(SR.CalendarAdapterFirstPrompt);
}
// Link to input option selection screen
RenderPostBackEventAsAnchor(writer,
OptionPrompt.ToString(CultureInfo.InvariantCulture),
promptText);
// We should honor BreakAfter property here as the first
// UI is shown with other controls on the same form.
// For other secondary UI, it is not necessary.
if (Control.BreakAfter)
{
breakAfter = true;
}
break;
// Render the first secondary page that provides differnt
// options to select a date.
case OptionPrompt:
writer.Write(SR.GetString(SR.CalendarAdapterOptionPrompt));
writer.WriteBreak();
arr = new ArrayList();
// Option to select the default date
arr.Add(Control.VisibleDate.ToString(
currentDateTimeInfo.ShortDatePattern, CultureInfo.CurrentCulture));
// Option to another page that can enter a date by typing
arr.Add(SR.GetString(SR.CalendarAdapterOptionType));
// Options to a set of pages for selecting a date, a week
// or a month by picking month/year, week and day
// accordingly. Available options are determined by
// SelectionMode.
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseDate));
if (Control.SelectionMode == CalendarSelectionMode.DayWeek ||
Control.SelectionMode == CalendarSelectionMode.DayWeekMonth)
{
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseWeek));
if (Control.SelectionMode == CalendarSelectionMode.DayWeekMonth)
{
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseMonth));
}
}
DataBindAndRender(writer, _optionList, arr);
break;
// Render a title and textbox to capture a date entered by user
case TypeDate:
if (_textBoxErrorMessage != null)
{
writer.Write(_textBoxErrorMessage);
writer.WriteBreak();
}
if (_selectList.Visible)
{
writer.Write(SR.GetString(SR.CalendarAdapterOptionEra));
writer.WriteBreak();
_selectList.RenderControl(writer);
}
String numericDateFormat = GetNumericDateFormat();
writer.Write(SR.GetString(SR.CalendarAdapterOptionType));
writer.Write(":");
writer.WriteBreak();
writer.Write("(");
writer.Write(numericDateFormat.ToUpper(CultureInfo.InvariantCulture));
writer.Write(")");
if (!_selectList.Visible)
{
writer.Write(GetEra(Control.VisibleDate));
}
writer.WriteBreak();
_textBox.Numeric = true;
_textBox.Size = numericDateFormat.Length;
_textBox.MaxLength = numericDateFormat.Length;
_textBox.Text = Control.VisibleDate.ToString(numericDateFormat, CultureInfo.InvariantCulture);
_textBox.Visible = true;
_textBox.RenderControl(writer);
// Command button for sending the textbox value back to the server
_command.Text = GetDefaultLabel(OKLabel);
_command.Visible = true;
_command.RenderControl(writer);
break;
// Render a paged list for choosing a month
case ChooseMonth:
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseMonth));
writer.Write(":");
writer.WriteBreak();
tempDate = Control.VisibleDate;
String abbreviatedYearMonthPattern = AbbreviateMonthPattern(currentDateTimeInfo.YearMonthPattern);
// This is to be consistent with ASP.NET Calendar control
// on handling YearMonthPattern:
// Some cultures have a comma in their YearMonthPattern,
// which does not look right in a calendar. Here we
// strip the comma off.
int indexComma = abbreviatedYearMonthPattern.IndexOf(',');
if (indexComma >= 0)
{
abbreviatedYearMonthPattern =
abbreviatedYearMonthPattern.Remove(indexComma, 1);
}
arr = new ArrayList();
for (int i = 0; i < _monthsToDisplay; i++)
{
arr.Add(tempDate.ToString(abbreviatedYearMonthPattern, CultureInfo.CurrentCulture));
tempDate = _threadCalendar.AddMonths(tempDate, 1);
}
arr.Add(GetDefaultLabel(NextLabel));
arr.Add(GetDefaultLabel(PreviousLabel));
DataBindAndRender(writer, _monthList, arr);
break;
// Based on the month selected in case ChooseMonth above, render a list of
// availabe weeks of the month.
case ChooseWeek:
String monthFormat = (GetNumericDateFormat()[0] == 'y') ? "yyyy/M" : "M/yyyy";
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseWeek));
writer.Write(" (");
writer.Write(Control.VisibleDate.ToString(monthFormat, CultureInfo.CurrentCulture));
writer.Write("):");
writer.WriteBreak();
// List weeks of days of the selected month. May include
// days from the previous and the next month to fill out
// all six week choices. This is consistent with the
// ASP.NET Calendar control.
// Note that the event handling code of this list control
// should be implemented according to the index content
// generated here.
tempDate = FirstCalendarDay(Control.VisibleDate);
arr = new ArrayList();
String weekDisplay;
for (int i = 0; i < 6; i++)
{
weekDisplay = tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
weekDisplay += DaySeparator;
tempDate = _threadCalendar.AddDays(tempDate, 6);
weekDisplay += tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
arr.Add(weekDisplay);
tempDate = _threadCalendar.AddDays(tempDate, 1);
}
DataBindAndRender(writer, _weekList, arr);
break;
// Based on the month and week selected in case ChooseMonth and ChooseWeek above,
// render a list of the dates in the week.
case ChooseDay:
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseDate));
writer.Write(":");
writer.WriteBreak();
tempDate = Control.VisibleDate;
arr = new ArrayList();
String date;
String dayName;
StringBuilder dayDisplay = new StringBuilder();
bool dayNameFirst = (GetNumericDateFormat()[0] != 'y');
for (int i = 0; i < 7; i++)
{
date = tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
if (Control.ShowDayHeader)
{
// Use the short format for displaying day name
dayName = GetAbbreviatedDayName(tempDate);
dayDisplay.Length = 0;
if (dayNameFirst)
{
dayDisplay.Append(dayName);
dayDisplay.Append(Space);
dayDisplay.Append(date);
}
else
{
dayDisplay.Append(date);
dayDisplay.Append(Space);
dayDisplay.Append(dayName);
}
arr.Add(dayDisplay.ToString());
}
else
{
arr.Add(date);
}
tempDate = _threadCalendar.AddDays(tempDate, 1);
}
DataBindAndRender(writer, _dayList, arr);
break;
default:
Debug.Assert(false, "Unexpected Secondary UI Mode");
break;
}
writer.ExitStyle(Style, breakAfter);
}
/// <include file='doc\ChtmlCalendarAdapter.uex' path='docs/doc[@for="ChtmlCalendarAdapter.Render"]/*' />
public override void Render(HtmlMobileTextWriter writer)
{
ArrayList arr;
DateTime tempDate;
DateTimeFormatInfo currentDateTimeInfo = DateTimeFormatInfo.CurrentInfo;
String abbreviatedMonthDayPattern = AbbreviateMonthPattern(currentDateTimeInfo.MonthDayPattern);
_threadCalendar = currentDateTimeInfo.Calendar;
bool breakAfter = false;
writer.EnterStyle(Style);
Debug.Assert(NotSecondaryUI == NotSecondaryUIInit);
switch (SecondaryUIMode)
{
case FirstPrompt:
String promptText = Control.CalendarEntryText;
if (String.IsNullOrEmpty(promptText))
{
promptText = SR.GetString(SR.CalendarAdapterFirstPrompt);
}
// Link to input option selection screen
RenderPostBackEventAsAnchor(writer,
OptionPrompt.ToString(CultureInfo.InvariantCulture),
promptText);
// We should honor BreakAfter property here as the first
// UI is shown with other controls on the same form.
// For other secondary UI, it is not necessary.
if (Control.BreakAfter)
{
breakAfter = true;
}
break;
// Render the first secondary page that provides differnt
// options to select a date.
case OptionPrompt:
writer.Write(SR.GetString(SR.CalendarAdapterOptionPrompt));
writer.WriteBreak();
arr = new ArrayList();
// Option to select the default date
arr.Add(Control.VisibleDate.ToString(
currentDateTimeInfo.ShortDatePattern, CultureInfo.CurrentCulture));
// Option to another page that can enter a date by typing
arr.Add(SR.GetString(SR.CalendarAdapterOptionType));
// Options to a set of pages for selecting a date, a week
// or a month by picking month/year, week and day
// accordingly. Available options are determined by
// SelectionMode.
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseDate));
if (Control.SelectionMode == CalendarSelectionMode.DayWeek ||
Control.SelectionMode == CalendarSelectionMode.DayWeekMonth)
{
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseWeek));
if (Control.SelectionMode == CalendarSelectionMode.DayWeekMonth)
{
arr.Add(SR.GetString(SR.CalendarAdapterOptionChooseMonth));
}
}
DataBindAndRender(writer, _optionList, arr);
break;
// Render a title and textbox to capture a date entered by user
case TypeDate:
if (_textBoxErrorMessage != null)
{
writer.Write(_textBoxErrorMessage);
writer.WriteBreak();
}
if (_selectList.Visible)
{
writer.Write(SR.GetString(SR.CalendarAdapterOptionEra));
writer.WriteBreak();
_selectList.RenderControl(writer);
}
String numericDateFormat = GetNumericDateFormat();
writer.Write(SR.GetString(SR.CalendarAdapterOptionType));
writer.Write(":");
writer.WriteBreak();
writer.Write("(");
writer.Write(numericDateFormat.ToUpper(CultureInfo.InvariantCulture));
writer.Write(")");
if (!_selectList.Visible)
{
writer.Write(GetEra(Control.VisibleDate));
}
writer.WriteBreak();
_textBox.Numeric = true;
_textBox.Size = numericDateFormat.Length;
_textBox.MaxLength = numericDateFormat.Length;
_textBox.Text = Control.VisibleDate.ToString(numericDateFormat, CultureInfo.InvariantCulture);
_textBox.Visible = true;
_textBox.RenderControl(writer);
// Command button for sending the textbox value back to the server
_command.Text = GetDefaultLabel(OKLabel);
_command.Visible = true;
_command.RenderControl(writer);
break;
// Render a paged list for choosing a month
case ChooseMonth:
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseMonth));
writer.Write(":");
writer.WriteBreak();
tempDate = Control.VisibleDate;
String abbreviatedYearMonthPattern = AbbreviateMonthPattern(currentDateTimeInfo.YearMonthPattern);
// This is to be consistent with ASP.NET Calendar control
// on handling YearMonthPattern:
// Some cultures have a comma in their YearMonthPattern,
// which does not look right in a calendar. Here we
// strip the comma off.
int indexComma = abbreviatedYearMonthPattern.IndexOf(',');
if (indexComma >= 0)
{
abbreviatedYearMonthPattern =
abbreviatedYearMonthPattern.Remove(indexComma, 1);
}
arr = new ArrayList();
for (int i = 0; i < _monthsToDisplay; i++)
{
arr.Add(tempDate.ToString(abbreviatedYearMonthPattern, CultureInfo.CurrentCulture));
tempDate = _threadCalendar.AddMonths(tempDate, 1);
}
arr.Add(GetDefaultLabel(NextLabel));
arr.Add(GetDefaultLabel(PreviousLabel));
DataBindAndRender(writer, _monthList, arr);
break;
// Based on the month selected in case ChooseMonth above, render a list of
// availabe weeks of the month.
case ChooseWeek:
String monthFormat = (GetNumericDateFormat()[0] == 'y') ? "yyyy/M" : "M/yyyy";
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseWeek));
writer.Write(" (");
writer.Write(Control.VisibleDate.ToString(monthFormat, CultureInfo.CurrentCulture));
writer.Write("):");
writer.WriteBreak();
// List weeks of days of the selected month. May include
// days from the previous and the next month to fill out
// all six week choices. This is consistent with the
// ASP.NET Calendar control.
// Note that the event handling code of this list control
// should be implemented according to the index content
// generated here.
tempDate = FirstCalendarDay(Control.VisibleDate);
arr = new ArrayList();
String weekDisplay;
for (int i = 0; i < 6; i++)
{
weekDisplay = tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
weekDisplay += DaySeparator;
tempDate = _threadCalendar.AddDays(tempDate, 6);
weekDisplay += tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
arr.Add(weekDisplay);
tempDate = _threadCalendar.AddDays(tempDate, 1);
}
DataBindAndRender(writer, _weekList, arr);
break;
// Based on the month and week selected in case ChooseMonth and ChooseWeek above,
// render a list of the dates in the week.
case ChooseDay:
writer.Write(SR.GetString(SR.CalendarAdapterOptionChooseDate));
writer.Write(":");
writer.WriteBreak();
tempDate = Control.VisibleDate;
arr = new ArrayList();
String date;
String dayName;
StringBuilder dayDisplay = new StringBuilder();
bool dayNameFirst = (GetNumericDateFormat()[0] != 'y');
for (int i = 0; i < 7; i++)
{
date = tempDate.ToString(abbreviatedMonthDayPattern, CultureInfo.CurrentCulture);
if (Control.ShowDayHeader)
{
// Use the short format for displaying day name
dayName = GetAbbreviatedDayName(tempDate);
dayDisplay.Length = 0;
if (dayNameFirst)
{
dayDisplay.Append(dayName);
dayDisplay.Append(Space);
dayDisplay.Append(date);
}
else
{
dayDisplay.Append(date);
dayDisplay.Append(Space);
dayDisplay.Append(dayName);
}
arr.Add(dayDisplay.ToString());
}
else
{
arr.Add(date);
}
tempDate = _threadCalendar.AddDays(tempDate, 1);
}
DataBindAndRender(writer, _dayList, arr);
break;
default:
Debug.Assert(false, "Unexpected Secondary UI Mode");
break;
}
writer.ExitStyle(Style, breakAfter);
}
/////////////////////////////////////////////////////////////////////
// Helper functions
/////////////////////////////////////////////////////////////////////
// Return the first date of the input year and month
private DateTime EffectiveVisibleDate(DateTime visibleDate)
{
return(_threadCalendar.AddDays(
visibleDate,
-(_threadCalendar.GetDayOfMonth(visibleDate) - 1)));
}
private static DateTime DeferOccurrenceFallingOnWeekend(Calendar calendar, DateTime occurrence, bool skipWeekends = true)
{
if(skipWeekends)
{
if (occurrence.DayOfWeek == DayOfWeek.Saturday)
{
occurrence = calendar.AddDays(occurrence, 2);
}
if (occurrence.DayOfWeek == DayOfWeek.Sunday)
{
occurrence = calendar.AddDays(occurrence, 1);
}
}
return occurrence.ToUniversalTime();
}
private static IEnumerable<DateTime> GetOccurrences(DateInterval interval, DatePeriod period, Calendar calendar, DateTime start, DateTime end, bool skipWeekends = true)
{
var difference = DateSpan.GetDifference(interval, start, end)/period.Quantifier;
if (start.Kind == DateTimeKind.Utc)
{
start = start.ToLocalTime();
}
for (var i = 0; i < difference; i++)
{
switch (period.Frequency)
{
case DatePeriodFrequency.Seconds:
var seconds = calendar.AddSeconds(start, period.Quantifier * i);
yield return DeferOccurrenceFallingOnWeekend(calendar, seconds, skipWeekends);
break;
case DatePeriodFrequency.Minutes:
var minutes = calendar.AddMinutes(start, period.Quantifier * i);
yield return DeferOccurrenceFallingOnWeekend(calendar, minutes, skipWeekends);
break;
case DatePeriodFrequency.Hours:
var hours = calendar.AddHours(start, period.Quantifier * i);
yield return DeferOccurrenceFallingOnWeekend(calendar, hours, skipWeekends);
break;
case DatePeriodFrequency.Days:
var days = calendar.AddDays(start, period.Quantifier*i);
yield return DeferOccurrenceFallingOnWeekend(calendar, days, skipWeekends);
break;
case DatePeriodFrequency.Weeks:
var weeks = calendar.AddWeeks(start, period.Quantifier*i);
yield return DeferOccurrenceFallingOnWeekend(calendar, weeks, skipWeekends);
break;
case DatePeriodFrequency.Months:
var months = calendar.AddMonths(start, period.Quantifier*i);
yield return DeferOccurrenceFallingOnWeekend(calendar, months, skipWeekends);
break;
case DatePeriodFrequency.Years:
var years = calendar.AddYears(start, period.Quantifier*i);
yield return DeferOccurrenceFallingOnWeekend(calendar, years, skipWeekends);
break;
default:
throw new ArgumentException("Frequency");
}
}
}
public void UpdateMonthMode()
{
Debug.Assert(this._owner.DisplayDate != null);
_currentMonth = (DateTime)this._owner.DisplayDate;
_firstDayOfWeek = this._owner.FirstDayOfWeek;
if (_currentMonth != null)
{
int year = _calendar.GetYear(_currentMonth);
int month = _calendar.GetMonth(_currentMonth);
DateTime firstDayOfMonth = new DateTime(year, month, 1);
if (this._headerButton != null)
{
this._headerButton.Content = string.Format(CultureInfo.CurrentCulture, Resource.Calendar_MonthViewHeaderText,
CultureInfo.CurrentCulture.DateTimeFormat.MonthNames[month - 1],
year.ToString(CultureInfo.CurrentCulture));
this._headerButton.IsEnabled = true;
}
int lastMonthToDisplay = PreviousMonthDays(firstDayOfMonth);
DateTime dateToAdd = _calendar.AddDays(firstDayOfMonth, -lastMonthToDisplay);
DateTime firstDayOfNextMonth = _calendar.AddMonths(firstDayOfMonth, 1);
// check to see if Prev/Next Buttons will be displayed
if (_previousButton != null)
{
if (DateTime.Compare(_owner.DisplayDateStart.GetValueOrDefault(DateTime.MinValue), firstDayOfMonth) > -1)
{
_previousButton.IsEnabled = false;
}
else
{
_previousButton.IsEnabled = true;
}
}
if (_nextButton != null)
{
if (DateTime.Compare(_owner.DisplayDateEnd.GetValueOrDefault(DateTime.MaxValue), firstDayOfNextMonth) < 0)
{
_nextButton.IsEnabled = false;
}
else
{
_nextButton.IsEnabled = true;
}
}
int count = 0;
if (_monthGrid != null)
{
Debug.Assert(_monthGrid.Children.Count == COLS * ROWS);
//Set the day titles
foreach (object child in _monthGrid.Children)
{
if (count < (COLS))
{
//this assumes that the day titles are always text blocks
TextBlock daytitle = child as TextBlock;
Debug.Assert(daytitle != null);
daytitle.Text = CultureInfo.CurrentCulture.DateTimeFormat.AbbreviatedDayNames[(count + (int)_firstDayOfWeek) % NUMBER_OF_DAYS_IN_WEEK];
}
else
{
DayButton mybutton = child as DayButton;
Debug.Assert(mybutton != null);
SetButtonState(mybutton, dateToAdd);
mybutton.IsTabStop = false;
if (_currentButton == null)
{
if (_owner.SelectedDate == null && mybutton.IsToday)
{
mybutton.IsTabStop = true;
_currentButton = mybutton;
mybutton.IsCurrent = true;
}
else
{
if (mybutton.IsSelected)
{
mybutton.IsTabStop = true;
_currentButton = mybutton;
mybutton.IsCurrent = true;
}
}
}
mybutton.Content = String.Format(CultureInfo.CurrentCulture, "{0,2}", dateToAdd.Day);
mybutton.DataContext = dateToAdd;
dateToAdd = _calendar.AddDays(dateToAdd, 1);
}
count++;
}
}
}
}
/// <summary>
/// Gets the first day of a week.
/// </summary>
/// <param name="year">The year.</param>
/// <param name="week">The week.</param>
/// <param name="calendar">The calendar.</param>
/// <param name="calendarWeekRule">The calendar week rule.</param>
/// <param name="firstDayOfWeek">The first day of week.</param>
/// <returns>The date of the first day in the week.</returns>
public static DateTime GetFirstDayOfWeek(
int year,
int week,
Calendar calendar = null,
CalendarWeekRule calendarWeekRule = CalendarWeekRule.FirstFourDayWeek,
DayOfWeek firstDayOfWeek = DayOfWeek.Sunday)
{
if (calendar == null)
calendar = CultureInfo.CurrentCulture.Calendar;
DateTime firstDay = new DateTime(year, 1, 7, calendar);
while (calendar.GetDayOfWeek(firstDay) != firstDayOfWeek || WeekNumber(firstDay, calendar, calendarWeekRule, firstDayOfWeek) % 52 > 1)
{
firstDay = calendar.AddDays(firstDay, -1);
}
// Add the week
return (week != 1) ? calendar.AddWeeks(firstDay, week - 1) : firstDay;
}
private void SetCalendarDayButtons(DateTime firstDayOfMonth)
{
int lastMonthToDisplay = PreviousMonthDays(firstDayOfMonth);
DateTime dateToAdd;
if (DateTimeHelper.CompareYearMonth(firstDayOfMonth, DateTime.MinValue) > 0)
{
//DisplayDate is not equal to DateTime.MinValue
//we can subtract days from the DisplayDate
dateToAdd = _calendar.AddDays(firstDayOfMonth, -lastMonthToDisplay);
}
else
{
dateToAdd = firstDayOfMonth;
}
if (this.Owner != null && this.Owner.HoverEnd != null && this.Owner._hoverStart != null)
{
this.Owner._hoverEndIndex = null;
this.Owner._hoverStartIndex = null;
}
int count = ROWS * COLS;
for (int childIndex = COLS; childIndex < count; childIndex++)
{
CalendarDayButton childButton = _monthView.Children[childIndex] as CalendarDayButton;
Debug.Assert(childButton != null);
childButton.Index = childIndex;
SetButtonState(childButton, dateToAdd);
//Update the indexes of hoverStart and hoverEnd
if (this.Owner != null && this.Owner.HoverEnd != null && this.Owner._hoverStart != null)
{
if (DateTimeHelper.CompareDays(dateToAdd, this.Owner.HoverEnd.Value) == 0)
{
this.Owner._hoverEndIndex = childIndex;
}
if (DateTimeHelper.CompareDays(dateToAdd, this.Owner._hoverStart.Value) == 0)
{
this.Owner._hoverStartIndex = childIndex;
}
}
childButton.IsTabStop = false;
childButton.Content = dateToAdd.Day.ToString(DateTimeHelper.GetCurrentDateFormat());
childButton.DataContext = dateToAdd;
if (DateTime.Compare((DateTime)DateTimeHelper.DiscardTime(DateTime.MaxValue), dateToAdd) > 0)
{
//Since we are sure DisplayDate is not equal to DateTime.MaxValue,
//it is safe to use AddDays
dateToAdd = _calendar.AddDays(dateToAdd, 1);
}
else
{
//DisplayDate is equal to the DateTime.MaxValue, so there are no trailing days
childIndex++;
for (int i = childIndex; i < count; i++)
{
childButton = _monthView.Children[i] as CalendarDayButton;
Debug.Assert(childButton != null);
//button needs a content to occupy the necessary space for the content presenter
childButton.Content = i.ToString(DateTimeHelper.GetCurrentDateFormat());
childButton.IsEnabled = false;
childButton.Opacity = 0;
}
return;
}
}
//If the _hoverStart or _hoverEnd could not be found on the DisplayMonth set the values of the _hoverStartIndex or _hoverEndIndex to be the
// first or last day indexes on the current month
if (this.Owner != null && this.Owner._hoverStart.HasValue && this.Owner._hoverEnd.HasValue)
{
if (!this.Owner._hoverEndIndex.HasValue)
{
if (DateTimeHelper.CompareDays(this.Owner._hoverEnd.Value, this.Owner._hoverStart.Value) > 0)
{
this.Owner._hoverEndIndex = COLS * ROWS - 1;
}
else
{
this.Owner._hoverEndIndex = COLS;
}
}
if (!this.Owner._hoverStartIndex.HasValue)
{
if (DateTimeHelper.CompareDays(this.Owner._hoverEnd.Value, this.Owner._hoverStart.Value) > 0)
{
this.Owner._hoverStartIndex = COLS;
}
else
{
this.Owner._hoverStartIndex = COLS * ROWS - 1;
}
}
}
}
